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Americo da Silva T, Acuña Caldeira Juncá M, Braunger ML, Riul A, Fernandes Barbin D. Application of a microfluidic electronic tongue based on impedance spectroscopy for coconut water analysis. Food Res Int 2024; 187:114353. [PMID: 38763640 DOI: 10.1016/j.foodres.2024.114353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 04/15/2024] [Accepted: 04/17/2024] [Indexed: 05/21/2024]
Abstract
The food industry has grown with the demands for new products and their authentication, which has not been accompanied by the area of analysis and quality control, thus requiring novel process analytical technologies for food processes. An electronic tongue (e-tongue) is a multisensor system that can characterize complex liquids in a fast and simple way. Here, we tested the efficacy of an impedimetric microfluidic e-tongue setup - comprised by four interdigitated electrodes (IDE) on a printed circuit board (PCB), with four pairs of digits each, being one bare sensor and three coated with different ultrathin nanostructured films with different electrical properties - in the analysis of fresh and industrialized coconut water. Principal Component Analysis (PCA) was applied to observe sample differences, and Partial Least Squares Regression (PLSR) was used to predict sample physicochemical parameters. Linear Discriminant Analysis (LDA) and Partial Least Square - Discriminant Analysis (PLS-DA) were compared to classify samples based on data from the e-tongue device. Results indicate the potential application of the microfluidic e-tongue in the identification of coconut water composition and determination of physicochemical attributes, allowing for classification of samples according to soluble solid content (SSC) and total titratable acidity (TTA) with over 90% accuracy. It was also demonstrated that the microfluidic setup has potential application in the food industry for quality assessment of complex liquid samples.
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Affiliation(s)
- Tatiana Americo da Silva
- Department of Food Engineering, School of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, Cidade Universitária, Campinas, 13083-862, São Paulo, Brazil
| | - Marina Acuña Caldeira Juncá
- Department of Food Engineering, School of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, Cidade Universitária, Campinas, 13083-862, São Paulo, Brazil
| | - Maria Luisa Braunger
- Department of Applied Physics, "Gleb Wataghin" Institute of Physics, University of Campinas (UNICAMP), Rua Bertrand Russell, 599-749, Cidade Universitária, Campinas, 13083-865, São Paulo, Brazil; Centre for Education, Research and Innovation in Energy Environment do IMT Nord Europe, France
| | - Antonio Riul
- Department of Applied Physics, "Gleb Wataghin" Institute of Physics, University of Campinas (UNICAMP), Rua Bertrand Russell, 599-749, Cidade Universitária, Campinas, 13083-865, São Paulo, Brazil.
| | - Douglas Fernandes Barbin
- Department of Food Engineering, School of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, Cidade Universitária, Campinas, 13083-862, São Paulo, Brazil.
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2
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Wu J, Tang Y, Zhang M, Chen W, Chen H, Zhong Q, Pei J, He R, Chen W. Mechanism for improving the in vitro digestive properties of coconut milk by modifying the structure and properties of coconut proteins with monosodium glutamate. Food Res Int 2024; 185:114288. [PMID: 38658074 DOI: 10.1016/j.foodres.2024.114288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 03/09/2024] [Accepted: 03/27/2024] [Indexed: 04/26/2024]
Abstract
In this paper, the effect of monosodium glutamate (MSG) on coconut protein (CP) solubility, surface hydrophobicity, emulsification activity, ultraviolet spectroscopy and fluorescence spectroscopy was investigated. Meanwhile, the changes in the in vitro digestive properties of coconut milk were also further analyzed. MSG treatment altered the solubility and surface hydrophobicity of CP, thereby improving protein digestibility. Molecular docking showed that CP bound to pepsin and trypsin mainly through hydrogen bonds and salt bridges. And MSG increased the cleavable sites of pepsin and trypsin on CP, thus further improving the protein digestibility. In addition, MSG increased the Na+ concentration in coconut milk, promoted flocculation and aggregation between coconut milk droplets, which prevented the binding of lipase and oil droplets and inhibited lipid digestion. These findings may provide new ideas and insights to improve the digestive properties of plant-based milk.
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Affiliation(s)
- Jiawu Wu
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Yingjiao Tang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Ming Zhang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Wenxue Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Haiming Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Qiuping Zhong
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Jianfei Pei
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Rongrong He
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
| | - Weijun Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
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Sangeetha UK, Sudhakaran N, Parvathy PA, Abraham M, Das S, De S, Sahoo SK. Coconut husk-lignin derived carbon dots incorporated carrageenan based functional film for intelligent food packaging. Int J Biol Macromol 2024; 266:131005. [PMID: 38522705 DOI: 10.1016/j.ijbiomac.2024.131005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/06/2024] [Accepted: 03/17/2024] [Indexed: 03/26/2024]
Abstract
Carbon dots (CDs) derived from sustainable natural feed-stocks like lignin have gained wide acceptance by virtue of their renewability and promising potential in intelligent sensing applications. The precursor lignin is isolated from agro-biomass waste, coconut husk through sodium hydroxide based extraction process. CDs are synthesised from amine functionalized lignin through solvothermal process and integrated into carrageenan biopolymer matrix (1, 2 and 3 wt%). The composite film with 2 wt% CDs (CARR2CD) showed optimum fluorescent emission intensity, excellent pH dependent fluorescent color change in the food pH range, reasonable tensile strength (46.50 ± 1.32 MPa) and 27 % increase in elongation at break. CDs imparted UV-light blocking properties (70 % UV-light) and enhanced hydrophobicity of the carrageenan matrix. CARR2CD film showed 84 % visible light transparency, 79 % reduction in oxygen transmittance rate (OTR), 81 % reduction in CO2 gas permeability and excellent antioxidant and antibacterial properties (against E. coli and S. aureus). As a practical application, the developed responsive packaging material is used to track pH change associated with milk spoilage via noticeable color change in fluorescent emission of the composite film. Thus, the developed responsive composite film paves a way for use as green and sustainable transparent intelligent food packaging material.
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Affiliation(s)
- U K Sangeetha
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nandhana Sudhakaran
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
| | - P A Parvathy
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Malini Abraham
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Subrata Das
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sriparna De
- Department of Allied Health Sciences, Brainware University, Kolkata 700125, India
| | - Sushanta K Sahoo
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Nasrun Z, Osman LS, Latif NHA, Elias NHH, Saidin M, Shahidan S, Abdullah SHA, Ali NA, Rusli SSM, Ibrahim MNM, Raja PB, Iqbal MAM, Trache D, Hussin MH. Conversion of archeological iron rust employing coconut husk lignin. Int J Biol Macromol 2023; 253:126786. [PMID: 37690637 DOI: 10.1016/j.ijbiomac.2023.126786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/02/2023] [Accepted: 09/05/2023] [Indexed: 09/12/2023]
Abstract
Rust powder collected from an archeological iron was evaluated by complementary analyses such as FTIR, XRD, XRF, and SEM/EDX. The analyses revealed that lepidocrocite (L) was the major component in the archeological iron. Coconut husk (CH) can be classified as a type of lignocellulosic biomass of renewable resources that are widely available, especially in coastal areas. In this research, the isolated lignin extracted from CH is being studied as a potential alternative for environmentally friendly applications. The isolated lignin from soda and organosolv pulping went through several analyses such as FTIR, NMR (13C and 2D-HSQC), and TGA analyses. The analyses showed that lignin isolated via soda pulping has superior antioxidant capabilities due to its greater phenolic-OH content compared to lignin isolated from organosolv pulping. The effects of lignin concentrations, pH, and reaction time were utilized in rust conversion studies of an archeological iron. 5 wt% of soda lignin (SL) was revealed as the ideal condition in this rust conversion study with a value of 84.21 %. The treated rust powder with 5 wt% of SL was then further gone through several complementary analyses, which revealed that the treated rust had nearly transformed into an amorphous state.
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Affiliation(s)
- Zanaharyatini Nasrun
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Liyana Syafawati Osman
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Nur Hanis Abd Latif
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Nur Hanani Hazirah Elias
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Mokhtar Saidin
- Centre for Global Archaeological Research, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Shaiful Shahidan
- Centre for Global Archaeological Research, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | | | - Nurul Ain Ali
- Centre for Global Archaeological Research, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Siti Syahirah Mohd Rusli
- Department of Natural Heritage, Level 6, Zon B, Wisma Persekutuan Anak Bukit, Pusat Pentadbiran Kerajaaan Persekutuan, Bandar Muadzam Sham, 06550 Alor Setar, Kedah, Malaysia
| | - Mohamad Nasir Mohamad Ibrahim
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Pandian Bothi Raja
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Mohammad Anwar Mohamed Iqbal
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Djalal Trache
- Energetic Materials Laboratory, Teaching and Research Unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046 Algiers, Algeria
| | - M Hazwan Hussin
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
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Adeleye GS, Odesanmi EO, Ajeigbe KO, Omayone T, Odetola A, Sobanke AO. Ameliorative Effects of Coconut Water on Hematological and Lipid Profiles of Phenylhydrazine-treated Rats. Niger J Physiol Sci 2023; 38:255-264. [PMID: 38696690 DOI: 10.54548/njps.v38i2.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/26/2023] [Indexed: 05/04/2024]
Abstract
Anaemia is a widespread health issue affecting young children and pregnant women, characterized by reduced red blood cells or haemoglobin levels. Coconut water, rich in nutrients such as L-arginine, iron, vitamin C, vitamin B6, folic acid and fatty acids, is believed to aid in blood formation (hematopoesis). The study aimed to examine the impact of coconut water on hematological indices and lipid profiles in rats with phenylhydrazine-induced anemia. 30 rats were divided into 5 groups: a normal control, phenylhydrazine untreated, coconut water (0.5ml/kg), iron, and ferrous treated groups. Hemoglobin, hematocrit, and erythrocyte levels were measured using a Hematology Analyzer. Results showed a significant decrease in LDL and TG levels, and an increase in HDL levels in phenylhydrazine induced anemia compared to the control group. Coconut water administration at 0.5ml/kg reduced LDL, VLDL and TG levels, and increased HDL levels in rats with induced anemia. The study found that coconut water had a positive effect on hematological indices, as it increased hemoglobin and erythrocyte levels in rats with induced anemia. These findings suggest that coconut water may have potential therapeutic benefits for individuals with anemia, particularly in lowering lipid levels and improving blood formation. However, further research is needed to fully understand the mechanisms underlying these effects and to determine the most effective dosage and duration of treatment. Overall, the study highlights the importance of coconut water as a potentially beneficial alternative treatment for anemia.
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Araújo RF, Bezerra LCA, de Novais LMR, D'Oca CDRM, Avelino F. Unveiling the mechanistic aspects of methylene blue adsorption onto a novel phosphate-decorated coconut fiber lignin. Int J Biol Macromol 2023; 253:127011. [PMID: 37742897 DOI: 10.1016/j.ijbiomac.2023.127011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/25/2023] [Accepted: 09/18/2023] [Indexed: 09/26/2023]
Abstract
The aim of this work was to evaluate the adsorptive performance of the phosphorylated coconut fiber lignin (PCFL) obtained through an innovative biorefinery process for removing methylene blue (MB). PCFL was obtained using coconut fiber mixed with 85 % wt. H3PO4 at 70 °C for 1 h. Milled wood lignin (MWL) and PCFL were characterized by FTIR, CP-MAS 31P NMR, phosphorous and hydroxyl contents, pHPZC, and BET analyses. The batch adsorption tests evaluated the effects of the biosorbent (0.25 - 4 g L-1) and adsorbate dosages (2.5 - 7.5 mg L-1), contact time (0 - 60 min), pH (4 - 8), ionic strength (0.001 - 0.1 mol L-1) and temperature (298.15 - 318.15 K) on MB adsorption. Kinetic, equilibrium, and thermodynamic modeling were used. The phosphorous content on PCFL was 2.5 times higher than that of MWL. PCFL presented an enhanced adsorptive performance for removing MB, which was spontaneous (ΔG0 < 0), endothermic (ΔH0 > 0), with affinity between the biosorbent and adsorbate (ΔS0 > 0), and driven by physisorption (Ea > 40 kJ mol-1). The adsorptive performance of PCFL was enhanced due to the grafting of new active sites by using an innovative biorefinery process, showing its potential to be used for textile effluent remediation.
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Affiliation(s)
- Rayanne Ferreira Araújo
- Department of Research, Extension and Production, Federal Institute of Education, Science and Technology of Ceará, 63503-790 Iguatu, CE, Brazil
| | - Luiz Carlos Alves Bezerra
- Department of Research, Extension and Production, Federal Institute of Education, Science and Technology of Ceará, 63503-790 Iguatu, CE, Brazil
| | | | | | - Francisco Avelino
- Department of Research, Extension and Production, Federal Institute of Education, Science and Technology of Ceará, 63503-790 Iguatu, CE, Brazil.
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Wu J, Tang Y, Chen W, Chen H, Zhong Q, Pei J, Han T, Chen W, Zhang M. Mechanism for improving coconut milk emulsions viscosity by modifying coconut protein structure and coconut milk properties with monosodium glutamate. Int J Biol Macromol 2023; 252:126139. [PMID: 37543272 DOI: 10.1016/j.ijbiomac.2023.126139] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 07/06/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
In this study, monosodium glutamate (MSG) was used to improve the viscosity of coconut milk and the underlying mechanism was explored by investigating the changes in structures of coconut milk protein and physicochemical properties of coconut milk. Firstly, the effect of MSG on the properties of coconut milk was studied. The results showed that MSG increased the pH and zeta potential, reduced the particle size, thus enhancing the droplet interaction and increasing the viscosity of coconut milk. Subsequently, the effects of MSG on the structure and properties of coconut proteins (CP) were investigated. FTIR spectroscopy and circular dichroism spectroscopy showed that MSG was able to change the secondary structure of CP. The results of SDS-PAGE showed that MSG was able to bind to CP to form a larger molecular weight protein, thus improving the viscosity of coconut milk. Moreover, MSG was also able to increase the water-binding capacity of CP. In addition, molecular docking and driving force analysis revealed that hydrogen bonds, electrostatic forces, disulfide bonds, and hydrophobic interactions are the main interactions between MSG and CP. Studying the effect of MSG on the viscosity of coconut milk provides theoretical support to improve the viscosity of other plant protein emulsions.
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Affiliation(s)
- Jiawu Wu
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Yingjiao Tang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Wenxue Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Haiming Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China; Maritime Academy, Hainan Vocational University of Science and Technology, 18 Qiongshan Road, Haikou 571126, PR China
| | - Qiuping Zhong
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Jianfei Pei
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Tao Han
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Weijun Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
| | - Ming Zhang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
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Khan MH, Akash NM, Akter S, Rukh M, Nzediegwu C, Islam MS. A comprehensive review of coconut-based porous materials for wastewater treatment and CO 2 capture. J Environ Manage 2023; 338:117825. [PMID: 37031519 DOI: 10.1016/j.jenvman.2023.117825] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 03/06/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
For several decades, water pollution has become a major threat to aquatic and non-aquatic species, including humans. Different treatment techniques have already been proposed and implemented depending on wastewater characteristics. But many of these treatment techniques are expensive and inefficient. Adsorption-based techniques have shown impressive performances as an inexpensive treatment method previously. Coconut-based resources have been considered as adsorbents for wastewater treatment because of their abundance, low cost, and favorable surface properties. However, over the last decade, no comprehensive study has been published regarding biochar from coconut-based materials for wastewater treatment and CO2 capture. This review discusses biochar production technology for coconut-based materials, its modification and characterization, its utilization as an adsorbent for removing metals and organics from wastewater, and the associated removal mechanisms and the economic aspects of coconut-based biochar. Coconut-based materials are cheap and effective for removing various organic compounds such as pesticides, hormones, phenol, and phenolic compounds from solutions and capturing CO2 from air mainly through the pore-filling mechanism. Utilizing coconut-based biochars in a hybrid system that combines adsorption and other techniques, such as biotechnology or chemical coagulation is a promising way to increase their performance as an adsorbent in wastewater treatment.
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Affiliation(s)
- Mahmudul Hasan Khan
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh; Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, United States
| | - Nasim Mahmud Akash
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh
| | - Sonia Akter
- Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Mahe Rukh
- Department of Chemical and Biomolecular Engineering, North Carolina State University, North Carolina, United States
| | - Christopher Nzediegwu
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
| | - Md Shahinoor Islam
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh.
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Shunmugiah Veluchamy R, Mary R, Beegum Puthiya P S, Pandiselvam R, Padmanabhan S, Sathyan N, Shil S, Niral V, Musuvadi Ramarathinam M, Lokesha AN, Shivashankara KS, Hebbar KB. Physicochemical characterization and fatty acid profiles of testa oils from various coconut (Cocos nucifera L.) genotypes. J Sci Food Agric 2023; 103:370-379. [PMID: 36373792 DOI: 10.1002/jsfa.12150] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 12/11/2021] [Accepted: 08/05/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Cocos nucifera (L.) is an important plantation crop with immense but untapped nutraceutical potential. Despite its bioactive potential, the biochemical features of testa oils of various coconut genotypes are poorly understood. Hence, in this study, the physicochemical characteristics of testa oils extracted from six coconut genotypes - namely West Coast Tall (WCT), Federated Malay States Tall (FMST), Chowghat Orange Dwarf (COD), Malayan Yellow Dwarf (MYD), and two Dwarf × Dwarf (D × D hybrids) viz., Cameroon Red Dwarf (CRD) × Ganga Bondam Green Dwarf (GBGD) and MYD × Chowghat Green Dwarf (CGD) - were analyzed. RESULTS The proportion of testa in the nuts (fruits) (1.29-3.42%), the proportion of oil in the testa (40.97-50.56%), and biochemical components in testa oils - namely proxidant elements Fe (34.17-62.48 ppm) and Cu (1.63-2.77 ppm), and the total phenolic content (6.84-8.67 mg GAE/100 g), and phytosterol content (54.66-137.73 mg CE/100 g) varied depending on the coconut genotypes. The saturated fatty acid content of testa oils (67.75 to 78.78%) was lower in comparison with that of coconut kernel oils. Similarly, the lauric acid (26.66-32.04%), myristic (18.31-19.60%), and palmitic acid (13.43-15.71%,) content of testa oils varied significantly in comparison with the coconut kernel oils (32-51%, 17-21% and 6.9-14%, respectively). Liquid chromatography-mass spectrometry (LC-MS) analysis revealed the presence of 18 phenolic acids in coconut testa oil. Multivariate analysis revealed the biochemical attributes that defined the principal components loadings. Hierarchical clustering analysis of the genotypes showed two distinct clusters. CONCLUSION This study reveals the genotypic variations in the nutritionally important biochemical components of coconut testa oils. The relatively high concentration of polyunsaturated fatty acids (PUFA) and polyphenol content in testa oils warrant further investigation to explore their nutraceutical potential. © 2022 Society of Chemical Industry.
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Affiliation(s)
| | - Rose Mary
- ICAR-Central Plantation Crops Research Institute, Kasaragod, India
| | | | - Ravi Pandiselvam
- ICAR-Central Plantation Crops Research Institute, Kasaragod, India
| | | | - Neenu Sathyan
- ICAR-Central Plantation Crops Research Institute, Kasaragod, India
| | - Sandip Shil
- ICAR- Central Plantation Crops Research Institute Research Centre, Jalpaiguri, India
| | - Vittal Niral
- ICAR-Central Plantation Crops Research Institute, Kasaragod, India
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Nascimento RJM, Bezerra LCA, Almeida JS, de Oliveira Barros M, Silva LRR, Rosa MF, Mazzeto SE, Lomonaco D, Pereira KRA, Avelino F. Elucidating the adsorption mechanism of Rhodamine B on mesoporous coconut coir-based biosorbents through a non-linear modeling and recycling approach. Environ Sci Pollut Res Int 2022; 29:79920-79934. [PMID: 35075560 DOI: 10.1007/s11356-022-18808-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
The search for renewable adsorbent materials has increased continuously, being the agro-wastes an interesting alternative. This work aimed to elucidate the mechanism of adsorption of Rhodamine B on crude and modified coconut fibers from aqueous systems and the feasibility of reusing the biosorbents. The chemical modification of crude coconut fiber was carried out by the organosolv process. The biosorbents were characterized by lignocellulosic composition, FTIR, TGA, WCA, SEM, nitrogen adsorption/desorption (BET-BJH), and pH of zero point of charge (pHPZC) analyses. The batch adsorption tests evaluated the effects of the adsorbent and adsorbate dosages, contact time, and temperature on Rhodamine B adsorption. For elucidating the adsorption mechanisms involved in the process, the non-linear forms of kinetic and isotherm models were used. The regeneration of the biosorbents was evaluated by carrying out the desorption experiments. Modified coconut fiber had an increase in the amount of α-cellulose, which influenced its structural, morphological, surface, and porous properties. The removal efficiency of Rhodamine B was about 90% for modified coconut fiber and 36% for crude coconut fiber. The dye adsorption was spontaneous and endothermic for both biosorbents, showing higher spontaneity and affinity with the adsorbate for biosorbent modified. Therefore, the coconut fiber can be considered an alternative to the traditional adsorbent materials that allows the reuse by four times without performance loss, in which its adsorptive capacity has increased through its chemical modification by a biorefinery process.
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Affiliation(s)
| | | | - Jéssica Silva Almeida
- Departament of Chemical Engineering, Federal University of Ceará, Fortaleza, CE, 60455-760, Brazil
| | - Matheus de Oliveira Barros
- Departament of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, CE, 60440-900, Brazil
| | - Lucas Renan Rocha Silva
- Departament of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, CE, 60440-900, Brazil
| | - Morsyleide Freitas Rosa
- Embrapa Agroindústria Tropical, Rua Dra Sara Mesquita 2270, Planalto do Pici, Fortaleza, CE, 60511-110, Brazil
| | - Selma Elaine Mazzeto
- Departament of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, CE, 60440-900, Brazil
| | - Diego Lomonaco
- Departament of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, CE, 60440-900, Brazil
| | | | - Francisco Avelino
- Federal Institute of Education, Science and Technology of Ceará, Iguatu, CE, 63503-790, Brazil.
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Li J, Wang SL, Zheng L, Chen D, Wu Z, Sun C, Bolan N, Zhao H, Peng AA, Fang Z, Zhou R, Liu G, Bhatnagar A, Qiu Y, Wang H. Spectroscopic investigations and density functional theory calculations reveal differences in retention mechanisms of lead and copper on chemically-modified phytolith-rich biochars. Chemosphere 2022; 301:134590. [PMID: 35427661 DOI: 10.1016/j.chemosphere.2022.134590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/29/2022] [Accepted: 04/09/2022] [Indexed: 06/14/2023]
Abstract
A better understanding of different retention mechanisms of potentially toxic elements (PTEs) by biochars during the remediation of contaminated sites is critically needed. In this study, different spectroscopic techniques including synchrotron-based micro-X-ray fluorescence (μ-XRF), X-ray absorption fine structure (XAFS), and near-edge XAFS spectroscopy (NEXAFS), were used to investigate the spatial distributions and retention mechanisms of lead (Pb) and copper (Cu) on phytolith-rich coconut-fiber biochar (CFB), and ammonia, nitric acid and hydrogen peroxide modified CFB (MCFB) (i.e., ACFB, NCFB and HCFB). The μ-XRF analyses indicated that sorption sites on ACFB and NCFB were more efficient compared to those on CFB and HCFB to bind Pb/Cu. XAFS analyses revealed that the percentage of Pb species as Pb(C2H3O2)2 increased from 22.2% (Pb-loaded CFBs) to 47.4% and 41.9% on Pb-loaded NCFBs and HCFBs, while the percentage of Cu(OH)2 and Cu(C2H3O2)2 increased from 5.8% to 32.8% (Cu-loaded CFBs) to 41.5% and 43.4% (Cu-loaded NCFBs), and 27.1% and 35.1% (Cu-loaded HCFBs), respectively. Due to their similar atomic structures of Pb/Cu, Pb(C2H3O2)2/Pb-loaded montmorillonite and Cu(C2H3O2)2/Cu(OH)2 were identified as the predominant Pb/Cu species observed in Pb- and Cu-loaded MCFBs. The NEXAFS analyses of carbon confirmed that increasing amounts of carboxylic groups were formed on HCFB and NCFB by oxidizing carbon-containing functional groups, which could provide additional active binding sites for Pb/Cu retention. Results from the X-ray photoelectron spectroscopy analyses of nitrogen showed that azido-groups of ACFB played major roles in Pb/Cu retention, while amide-groups and pyridine-groups of NCFB primarily participated in Pb/Cu retention. Overall, density functional theory calculations suggested that silicate and the synergistic effect of hydroxyl and carboxylic-groups on MCFBs were highly efficient in Pb retention, while azido-groups and/or carboxylic-groups played major roles in Cu retention. These results provide novel insights into the PTE retention mechanisms of MCFBs.
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Affiliation(s)
- Jianhong Li
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, Fujian, 362000, China; Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Shan-Li Wang
- Department of Agricultural Chemistry, National Taiwan University, Taipei, 10617, Taiwan, ROC
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Dongliang Chen
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhipeng Wu
- College of Tropical Crops, Hainan University, Haikou, Hainan, 570228, China
| | - Chenghua Sun
- Department of Chemistry and Biotechnology, Center for Translational Atomaterials, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Nanthi Bolan
- School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, 6001, Australia
| | - Hongting Zhao
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - An-An Peng
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Zheng Fang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Rongfu Zhou
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Guobin Liu
- The 41st Institute of Sixth Academy of China Aerospace Science & Industry Corp, Hohhot, Inner Mongolia, 010010, China
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Yong Qiu
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, Fujian, 362000, China.
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China.
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12
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Oliveira EN, Meneses AT, de Melo SF, Dias FMR, Perazzini MTB, Perazzini H, Meili L, Soletti JI, Carvalho SHV, Bispo MD. Highly effective adsorption of caffeine by a novel activated carbon prepared from coconut leaf. Environ Sci Pollut Res Int 2022; 29:50661-50674. [PMID: 35235121 DOI: 10.1007/s11356-022-18788-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
The disposal of coconut wastes is costly and damaging to the environment, but its uses are advantageous activated carbons production. Coconut leaves waste were used for activated carbon production by pyrolysis at 500° C and activation with potassium carbonate. The activated carbon was used for caffeine removal from aqueous solution. The coconut leaves activated carbon showed a predominantly amorphous structure from X-ray diffraction analysis and a pH at the zero charge point of 7.9. From the N2 adsorption/desorption method, the adsorbent showed a predominance of mesopores, with average pore size of 45.48 ηm and a surface area of 678.03 m2/g. From kinetic studies the data followed the pseudo-second order, where the intraparticle diffusion can be neglected. The adsorption isotherms were satisfactorily adjusted for the Redlich-Peterson model and a type curve L was identified. The thermodynamic parameters showed that adsorption occurred spontaneously, was exothermic and governed by physical adsorption. The artificial neural networks developed were capable of predicting both kinetics and equilibrium adsorption data under different operating conditions and was comparable to the traditional models available in literature in the training experiments, encouraging its use for data generalization when an efficient dataset is used. In conclusion, coconut leaves waste showed to be a promising feedstock to produce activated carbon aiming caffeine removal from water and wastewater.
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Affiliation(s)
- Elvio N Oliveira
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - Alex T Meneses
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - Samara F de Melo
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - Franciele M R Dias
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - Maisa T B Perazzini
- Institute of Natural Resources, Federal University of Itajubá-UNIFEI, Itajubá, MG, Brazil
| | - Hugo Perazzini
- Institute of Natural Resources, Federal University of Itajubá-UNIFEI, Itajubá, MG, Brazil
| | - Lucas Meili
- Laboratory of Processes (LAPRO), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - João I Soletti
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - Sandra H V Carvalho
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil
| | - Mozart D Bispo
- Laboratory of Separation Systems and Process Optimization (LASSOP), Center of Technology, Federal University of Alagoas (UFAL), Maceió, Alagoas, Brazil.
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Wirkijowska A, Sobota A, Zarzycki P, Nawrocka A, Blicharz-Kania A, Andrejko D. Chemical, technological, and sensory evaluation of the suitability of coconut by-products in white rolls. J Sci Food Agric 2022; 102:3370-3378. [PMID: 34822176 DOI: 10.1002/jsfa.11684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 08/06/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Fortification of rolls, one of the most popular snacks for children and adults, with coconut by-products can be interesting in terms of both nutritional enrichment and reduction of food waste. Coconut by-products, such as residues from coconut milk (RCM) and coconut oil (RCO) extraction, are a valuable source of dietary fiber. In the study, coconut flours obtained from RCM and RCO were used (FCM and FCO, respectively) for supplementation of rolls; white wheat flour was replaced with FCM or FCO at levels of 6, 12, and 18 g per 100 g. RESULTS The effect of the addition of the coconut by-products on the nutritional value, sensory evaluation, physical properties, and texture of rolls was determined after 24 and 72 h of storage. The research showed a positive effect of FCM and FCO on the roll yield, crumb moisture, and baking loss. The sensory evaluation revealed that the 12% addition of coconut residues yielded products with high overall acceptability (8 points on a 9-point scale). Compared with the control, a 12% addition of FCO or FCM contributed to an increase in proteins of 7.9% and 3.9% respectively and an increase in dietary fiber of 76% and 57% respectively. Despite the increase in the fat and protein contents, the energy value of the coconut rolls was significantly lower (244.6 kcal and 245.3 kcal for FCO and FCM respectively) than in the control wheat rolls (266.0 kcal). CONCLUSION White rolls with coconut flours obtained after grinding residues from oil or coconut milk extraction significantly increased the nutritional value of the rolls. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Anna Wirkijowska
- Division of Engineering and Cereals Technology, Department of Plant Food Technology and Gastronomy, University of Life Sciences in Lublin, Lublin, Poland
| | - Aldona Sobota
- Division of Engineering and Cereals Technology, Department of Plant Food Technology and Gastronomy, University of Life Sciences in Lublin, Lublin, Poland
| | - Piotr Zarzycki
- Division of Engineering and Cereals Technology, Department of Plant Food Technology and Gastronomy, University of Life Sciences in Lublin, Lublin, Poland
| | | | - Agata Blicharz-Kania
- Department of Biological Bases of Food and Feed Technologies, University of Life Sciences in Lublin, Lublin, Poland
| | - Dariusz Andrejko
- Department of Biological Bases of Food and Feed Technologies, University of Life Sciences in Lublin, Lublin, Poland
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14
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Adelodun AA. On the potential of pristine Cocos nucifera L. tissues for green desalination. Philos Trans A Math Phys Eng Sci 2022; 380:20210145. [PMID: 35220769 DOI: 10.1098/rsta.2021.0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 09/29/2021] [Indexed: 06/14/2023]
Abstract
Coconut palm tree (Cocos nucifera L.) tissues were used as a readily available, low-cost and green adsorbent to desalinate seawater. The tree bark (CB), husk (CH), leaves (CL) and roots (CR) were examined in their fresh (F) and dry (D) forms. The salinity removal (adsorption) efficiency followed the trend: F_CB ≈ F_CR > F_CL > D_CR > F_CL > D_CR. The sorbents from the coastal region desalinated more efficiently than those from a non-coastal region. Also, the fresh tissues were more effective and efficient than the dry parts. The salinity retention ability (desalination : desorption) follows the trend: F_CR (22.2) > F_CB (19.0) ≫ D_CR (12.3) > D_CB (11.0) > D_CL (6.14) ≈ F_CL (6.10) > F_CH (4.3) > D_CH (2.1). Moreover, the desalination fitted the pseudo-second-order kinetics than the pseudo-first-order, suggesting the predominance of chemisorption over physical removal. Overall, water pH, conductivity, total dissolved solids and dissolved oxygen (DO) correlated positively and strongly with desalination. By contrast, the density and redox potential correlated negatively, whereas temperature and DO showed no definite influence. Conclusively, F_CR and F_CB are the most suitable coconut palm tree tissues for desalination. Future studies should include chemical characterization of the tissues and system optimization for upscaling. This article is part of the theme issue 'Developing resilient energy systems'.
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Affiliation(s)
- Adedeji A Adelodun
- Department of Marine Science and Technology, School of Earth and Mineral Sciences, The Federal University of Technology, P.M.B. 704, Akure 340001, Nigeria
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15
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Zhang X, Peng L, Dai Y, Xie Q, Wu P, Chen M, Liu C. Anti-cataract effects of coconut water in vivo and in vitro. Biomed Pharmacother 2021; 143:112032. [PMID: 34488080 DOI: 10.1016/j.biopha.2021.112032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 08/03/2021] [Accepted: 08/07/2021] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE To determine the anti-cataract effects of coconut water (CW) in vivo and in vitro, and to explore the potential pathogenic mechanism. METHODS In this study, 48 male Sprague-Dawley rats were randomly divided into 4 groups: control (CO), diabetic (DM), diabetic treated with CW (DM + CW), and diabetic treated with Glibenclamide (DM + Gli). Except for the CO group, in the other three groups, intraperitoneal injection of STZ (60 mg/kg) was conducted to establish diabetic models. The experiment was conducted for 20 weeks. The slit-lamp examination was undertaken during the period of experiment (20 weeks), and then, all rats were sacrificed. The levels of superoxide dismutase (SOD), malondialdehyde (MDA), and glutathione peroxidase (GSH-Px) in the left lens were measured by using biochemical assays. The right lens was used for pathological analysis. The rat lens epithelial cells (LECs) were cultured in vitro and the subcultured cell were divided into four groups, namely the normal glucose group (5 mmol /L glucose, Group I), the high glucose group (40 mmol/L glucose, Group II), high glucose +5% CW group (Group III), and high glucose +10% CW group (Group IV). LECs were cultured under the conditions as described above for 48 h. Cell proliferation and the morphological changes were observed with interted phase contrast microscope.The level of cell apoptosis was determined by flow cytometry. the level of SOD, MDA and GSH-Px were also detected. RESULTS The lens opacity index decreased in diabetic rats, and LECs apoptosis ratio also decreased in high glucose environments that received CW. Under treatment with CW, reduced MDA level and elevated activities of SOD and GSH-Px were detected, both in vivo and in vitro experiments. The increased severity of cataract and LECs apoptosis were noted in diabetic rats that received normal water, while CW markedly mitigated the enhanced cataract severity and the reduction of LECs induced by diabetes mellitus. CONCLUSION CW is a functional food that can protect the lens from diabetic cataract. The possible underlying mechanism may be partly explained via the decreased oxidative stress in lens. However, further research needs to be conducted to indicate the pathogenic mechanism of anti-diabetic effects of CW.
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Affiliation(s)
- Xiaohua Zhang
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China; Department of Ophthalmology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Li Peng
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China
| | - Yanan Dai
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China
| | - Qing Xie
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China.
| | - Peipei Wu
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China
| | - Minhua Chen
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China
| | - Caixia Liu
- Department of Ophthalmology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China
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Phaeon N, Chapanya P, Mueangmontri R, Pattamasuwan A, Lipan L, Carbonell-Barrachina ÁA, Sriroth K, Nitayapat N. Acrylamide in non-centrifugal sugars and syrups. J Sci Food Agric 2021; 101:4561-4569. [PMID: 33460464 DOI: 10.1002/jsfa.11098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/01/2021] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Acrylamide in foods has been widely studied because of its possible carcinogenicity. Most of the foods investigated were prepared using low moisture and high temperature conditions. Non-centrifugal sugars (NCSs), which have been promoted as 'non-chemical' natural sweeteners, contain precursors of acrylamide and their production processes involved prolonged heating. The acrylamide content in 32 commercial NCSs from coconut, cane and palmyra palm purchased in Asian countries was investigated. Additionally, syrups (80 o Brix) produced from coconut and palmyra raw saps and cane juice were prepared by evaporation with prolonged heating (2.5 h to reach 100 °C, 1 h to increase to 110 °C, held at 110 °C for 30 min). The compositions and contents of sugars, amino acids and minerals, as well as the physical characteristics of the raw saps, juice and syrups, were determined. RESULTS The acrylamide content of these 32 products ranged from < 15 to 4011 μg kg-1 . The raw saps and juice were mildly acidic (pH 5.14-5.66) and similar values were observed for their syrups (4.73-5.73). The contents of sucrose, fructose and glucose in the saps and juice from these plants were similar, whereas their compositions varied with respect to amino acids. The variation of the ornithine content was significant, demonstrating a striking influence on the extent of acrylamide formation (867-1564 μg kg-1 ) in the syrups prepared from these materials. CONCLUSION The present study emphasizes the importance of a careful monitoring and control of the critical steps invloved in the manufacturing process of NCSs (particularly the evaporation phase), aiming to protect the health and safety of consumers. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Nuchnicha Phaeon
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok, Thailand
- Mitr Phol Sugarcane Research Center Co., Ltd, Chaiyaphum, Thailand
| | | | | | | | - Leontina Lipan
- Department of Agro-Food Technology, Escuela Politécnica Superior de Orihuela, Universidad Miguel Hernández de Elche, Alicante, Spain
| | - Ángel A Carbonell-Barrachina
- Department of Agro-Food Technology, Escuela Politécnica Superior de Orihuela, Universidad Miguel Hernández de Elche, Alicante, Spain
| | | | - Nuttakan Nitayapat
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok, Thailand
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17
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Raczyk M, Kruszewski B, Michałowska D. Effect of Coconut and Chestnut Flour Supplementations on Texture, Nutritional and Sensory Properties of Baked Wheat Based Bread. Molecules 2021; 26:4641. [PMID: 34361794 PMCID: PMC8347958 DOI: 10.3390/molecules26154641] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/25/2021] [Accepted: 07/28/2021] [Indexed: 12/02/2022] Open
Abstract
Wheat bread, produced by the single-phase method, is a common food consumed all over the world. Due to changes in lifestyle and nutritional trends, alternative raw materials are sought to increase the nutritional value and improve the taste of daily consumed products. Additionally, customers seek a wide variety of foods, especially when it comes to basic foods. Nuts, such as coconuts or chestnuts, might provide an attractive flavour with benefits to the nutritional quality. In this study, the effect of substituting wheat flour with coconut or chestnut flour (flour contribution level: 5, 10, 15, 30, 50% w/w), was evaluated in terms of the breads specific volume, texture, colour, nutritional composition, and dietary fibre fraction contents. Moreover, a sensory evaluation was conducted to assess potential consumer acceptance. Based on the consumer's perception, the overall acceptance of bread with 15% w/w of coconut and chestnut flour was in privilege compared to the control sample. As a result, taking all of the tested parameters into account, the breads with 5, 10, and 15% supplementation of chestnut or coconut flour were still of good quality compared to the wheat bread and their fibre content was significantly higher.
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Affiliation(s)
- Marianna Raczyk
- Department of Food Technology and Assessment, Institute of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Bartosz Kruszewski
- Department of Food Technology and Assessment, Institute of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Dorota Michałowska
- Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology—State Research Institute, Rakowiecka 36, 02-532 Warsaw, Poland;
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Deen A, Visvanathan R, Wickramarachchi D, Marikkar N, Nammi S, Jayawardana BC, Liyanage R. Chemical composition and health benefits of coconut oil: an overview. J Sci Food Agric 2021; 101:2182-2193. [PMID: 33022082 DOI: 10.1002/jsfa.10870] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 08/10/2020] [Accepted: 10/06/2020] [Indexed: 05/27/2023]
Abstract
Coconut oil is an integral part of Sri Lankan and many South Asian diets. Initially, coconut oil was classified along with saturated fatty acid food items and criticized for its negative impact on health. However, research studies have shown that coconut oil is a rich source of medium-chain fatty acids. Thus, this has opened new prospects for its use in many fields. Beyond its usage in cooking, coconut oil has attracted attention due to its hypocholesterolemic, anticancer, antihepatosteatotic, antidiabetic, antioxidant, anti-inflammatory, antimicrobial and skin moisturizing properties. Despite all the health benefits, consumption of coconut oil is still underrated due to a lack of supportive scientific evidence. Even though studies done in Asian countries claim a favorable impact on cardiac health and serum lipid profile, the limitations in the number of studies conducted among Western countries impede the endorsement of the real value of coconut oil. Hence, long-term extensive studies with proper methodologies are suggested to clear all the controversies and misconceptions of coconut oil consumption. This review discusses the composition and functional properties of coconut oils extracted using various processing methods. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Afka Deen
- Laboratory of Nutritional Biochemistry, National Institute of Fundamental Studies, Kandy, Sri Lanka
- Postgraduate Institute of Science, University of Peradeniya, Kandy, Sri Lanka
| | - Rizliya Visvanathan
- Laboratory of Nutritional Biochemistry, National Institute of Fundamental Studies, Kandy, Sri Lanka
| | | | - Nazrim Marikkar
- Laboratory of Nutritional Biochemistry, National Institute of Fundamental Studies, Kandy, Sri Lanka
| | - Sirinivas Nammi
- Laboratory of Nutritional Biochemistry, National Institute of Fundamental Studies, Kandy, Sri Lanka
- School of Science and Health, Western Sydney University, Penrith, New South Wales, Australia
- National Institute of Complementary Medicine (NICM), Western Sydney University, Penrith, New South Wales, Australia
| | - Barana C Jayawardana
- Department of Animal Science, Faculty of Agriculture, University of Peradeniya, Kandy, Sri Lanka
| | - Ruvini Liyanage
- Laboratory of Nutritional Biochemistry, National Institute of Fundamental Studies, Kandy, Sri Lanka
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Olaniyan OT, Ojewale OA, Dare A, Adebayo O, Enyojo JE, Okotie GE, Adetunji CO, Mada BS, Okoli BJ, Eweoya OO. Cocos nucifera L. oil alleviates lead acetate-induced reproductive toxicity in sexually-matured male Wistar rats. J Basic Clin Physiol Pharmacol 2021; 33:297-303. [PMID: 33713589 DOI: 10.1515/jbcpp-2020-0281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 11/25/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Lead primarily affects male reproductive functions via hormonal imbalance and morphological damage to the testicular tissue with significant alteration in sperm profile and oxidative markers. Though, different studies have reported that Cocos nucifera L. oil has a wide range of biological effects, this study aimed at investigating the effect of Cocos nucifera L. oil on lead acetate-induced reproductive toxicity in male Wistar rats. METHODS Twenty (20) sexually matured male Wistar rats (55-65 days) were randomly distributed into four groups (n=5). Group I (negative control)-distilled water orally for 56 days, Group II (positive control)-5 mg/kg bwt lead acetate intraperitoneally (i.p.) for 14 days, Group III-6.7 mL/kg bwt Cocos nucifera L. oil orally for 56 days and Group IV-lead acetate intraperitoneally (i.p.) for 14 days and Cocos nucifera L. oil for orally for 56 days. Rats were sacrificed by diethyl ether, after which the serum, testis and epididymis were collected and used for semen analysis, biochemical and histological analysis. RESULTS The lead acetate significantly increases (p<0.05) testicular and epididymal malondialdehyde (MDA) levels, while a significant reduction (p<0.05) in sperm parameters, organ weight, testosterone and luteinizing hormone was observed when compared with the negative control. The coadministration of Cocos nucifera oil with lead acetate significantly increases (p<0.05) testosterone, luteinizing hormone, sperm parameters and organ weight, with a significant decrease (p<0.05) in MDA levels compared with positive control. Histological analysis showed that lead acetate distorts testicular cytoarchitecture and germ cell integrity while this was normalized in the cotreated group. CONCLUSIONS Cocos nucifera oil attenuates the deleterious effects of lead acetate in male Wistar rats, which could be attributed to its polyphenol content and antioxidant properties.
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Affiliation(s)
- Olugbemi T Olaniyan
- Department of Physiology, Laboratory for Reproductive Biology and Developmental Programming, Edo State University Uzairue, Iyamho, Edo State, Nigeria
| | - Olakunle A Ojewale
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Bushenyi, Uganda
| | - Ayobami Dare
- Department of Physiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Olufemi Adebayo
- Department of Physiology, Bingham University Karu, New Karu, Nasarawa State, Nigeria
| | - Joseph E Enyojo
- Department of Physiology, Bingham University Karu, New Karu, Nasarawa State, Nigeria
| | - Gloria E Okotie
- Department of Physiology, University of Ibadan, Ibadan, Nigeria
| | - Charles O Adetunji
- Department of Microbiology, Applied Microbiology, Biotechnology and Nanotechnology Laboratory, Edo State University Uzairue, Iyamho, Edo State, Nigeria
| | | | - Bamidele J Okoli
- Institute of Chemical and Biotechnology, Vaal University of Technology, Southern Gauteng Science and Technology Park, Sebokeng, South Africa
| | - Olugbenga O Eweoya
- School of Medicine and Allied Health Sciences, University of the Gambia, Banjul, The Gambia
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20
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Kotecka-Majchrzak K, Sumara A, Fornal E, Montowska M. Proteomic analysis of oilseed cake: a comparative study of species-specific proteins and peptides extracted from ten seed species. J Sci Food Agric 2021; 101:297-306. [PMID: 32629549 DOI: 10.1002/jsfa.10643] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/06/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND In recent years there has been a visible trend among consumers to move away from consuming meat in favor of plant products. Meat producers have therefore been trying to meet the expectations of consumers by introducing new products to the food market with a greater proportion of plant ingredients. Meat products are enriched not only by the addition of vegetable oils but also by ground or whole oilseeds or their preparation. In this study, we present in-solution tryptic digestion and an ultra-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS/MS)-based proteomics approach to investigate specific proteins and peptides of ten oilseed cakes, by-products of cold pressing oil from coconut, evening primrose, hemp, flax, milk thistle, nigella, pumpkin, rapeseed, sesame, and sunflower seeds, for authentication purposes. RESULTS We identified a total of 229 unique oilseed proteins. The number of specific proteins varied depending on the sample, from 4 to 48 in evening primrose and sesame. Moreover, we identified approximately 440 oilseed unique peptides in the cakes of all the analyzed oilseeds; the largest amounts were found in sesame (107 peptides), sunflower (100), pumpkin, hemp (42), rapeseed (36), and flax cake (35 peptides). CONCLUSIONS We provide novel information on unique / species-specific peptide markers that will extend the scope of testing the authenticity of a wide range of foods. The results of this peptide discovery experiment may further contribute to the development of targeted methods for the detection and quantification of oilseed proteins in processed foods, and thus to the improvement of food quality. © 2020 Society of Chemical Industry.
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Affiliation(s)
| | - Agata Sumara
- Department of Pathophysiology, Medical University of Lublin, Lublin, Poland
| | - Emilia Fornal
- Department of Pathophysiology, Medical University of Lublin, Lublin, Poland
| | - Magdalena Montowska
- Department of Meat Technology, Poznan University of Life Sciences, Poznan, Poland
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21
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Hwang KN, Tung HP, Lu YH, Shaw HM. Liquid Chicken Oil Could Be a Healthy Dietary Oil. J Oleo Sci 2021; 70:1157-1164. [PMID: 34349090 DOI: 10.5650/jos.ess21053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Liquid chicken oil is similar to the human lipid ratio, and is similar to the ideal fatty acids ratio suggested by Hayes, but its benefits remain unclear (Hwang, K.N.; Tung, H.P.; Shaw, H.M. J. Oleo. Sci. 69, 199-206 (2020)). Using soybean oil as a control, liquid chicken oil, coconut oil, lard oil, and olive oil, were tested on SD rats with the rodent diet 5001 plus 1% of high cholesterol addition and moderate 10 % of test oils. Positive results showed that a 10% liquid chicken oil diet reduced LDL and triglycerides, atherogenic index while increasing superoxide dismutase more than the soybean oil control (0.05 ≦ p < 0.10). Moreover, increment of hepatic endogenous glutathione peroxidase was found to be significantly different from the soybean oil control (p < 0.05). In this study, liquid chicken oil had more benefits than vegetable soybean dietary oil, with little evidence of hyperlipidemia. Comparison of the test oils with categories of fatty acids to the idea ratio SFA : MUFA : PUFA = 1 : 1.5 : 1, scored by its average weight implied a parallel trend of lipidemia and hepatic antioxidant activity to its score. It is difficult to use the test of rat to reflect human physiology, it remain 19% different of the fatty acids ratio from human ratio, however, this study reveal that the healthiness of a dietary oil seems relate well to its compatibility to the idea ratio or the host oil ratio, in this case, it is the human ratio.
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Affiliation(s)
| | - Huey-Ping Tung
- Chia Nan University of Pharmacy and Science, Department of Pharmacy
| | - Ying-Hua Lu
- College of Chemistry and Chemical Engineering, Xiamen University, Department of Chemical and Biochemical Engineering
| | - Huey-Mei Shaw
- Chia Nan University of Pharmacy and Science, Department of Health and Nutrition, Science
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22
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Kamran U, Park SJ. MnO 2-decorated biochar composites of coconut shell and rice husk: An efficient lithium ions adsorption-desorption performance in aqueous media. Chemosphere 2020; 260:127500. [PMID: 32688308 DOI: 10.1016/j.chemosphere.2020.127500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 05/07/2023]
Abstract
Lithium (Li+) is used in various applications involving pharmaceuticals, textile dyes, and batteries. Therefore, the demand for environmentally friendly and effective materials for Li+ uptake and recovery continues to increase. Herein, rice husk (RH) and coconut shell (CS) biomasses were used to fabricate honeycomb-networked biochar (BC) precursors via slow pyrolysis. RHBC- and CSBC-based MnO2 composites were synthesized by depositing MnO2 in various ratios onto RHBC and CSBC by varying the KMnO4 concentration (2%, 3%, and 4%), followed by simple ultrasonication and heat-treatment methodologies. The structural and physicochemical properties of all of the fabricated composites were analyzed using several different instrumental methods. The batch adsorption experiments were performed for comparative Li+-adsorption studies of RHBC-Mnx and CSBC-Mnx composites by optimizing several parameters (pH, adsorbent dose, Li+ initial concentration, and contact time). The comparative adsorption analysis revealed that the RHBC-Mnx composites exhibited stronger Li+-adsorption ability than the CSBC-Mnx composites and that increasing the MnO2 deposition to 3% in both cases led to maximum Li+ adsorption capacities (62.85 mg g-1 and 57.8 mg g-1), respectively. The kinetic studies show that Li+ adsorption proceeds through the pseudo-second-order mechanism. Li+ recovery was successfully carried out using HCl (eluting agent), thereby demonstrating the benefits of synthesized composites at the industrial scale. The current work indicates that the fabricated RHBC-Mnx and CSBC-Mnx composites may have potential for use as economical composites in eco-friendly applications such as Li+ adsorption and recovery from aqueous media.
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Affiliation(s)
- Urooj Kamran
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea
| | - Soo-Jin Park
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea.
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23
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Asghar MT, Yusof YA, Mokhtar MN, Yaacob ME, Ghazali HM, Varith J, Chang LS, Manaf YN. Processing of coconut sap into sugar syrup using rotary evaporation, microwave, and open-heat evaporation techniques. J Sci Food Agric 2020; 100:4012-4019. [PMID: 32337729 DOI: 10.1002/jsfa.10446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/29/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Coconut sugar has a caramel color with a taste like brown sugar. It is commonly used as natural sweetener. However, coconut sugar has been produced from coconut sap using a traditional method that involves heating the sap at high temperature (>100 °C) in an open pan for a long period (3-5 h). This conventional method results in an over-cooked sugar, which leads to quality deterioration in terms of both its physical and chemical properties. The current study aimed to investigate the processing of coconut sap into sugar syrup using alternative processing techniques such as rotary vacuum evaporation (RE) and microwave evaporation (ME), comparing them with open-heat evaporation (OHE) technique. RESULTS Coconut sugar syrup produced by rotary evaporation at 60 °C and 250 mbar vacuum (RE-60) required the shortest production time (12.2 min) and the lowest processing temperature (54.8 °C) when compared with ME (13 min and 103.2 °C) and OHE (46.8 min and 101.6 °C). It also had a light brownish color with a higher L* value (35.17) than the ME (29.84) and OHE (23.84) methods. It was found to contain higher amounts of monosaccharides (fructose and glucose) and lower amounts of disaccharides (sucrose). Furthermore, the amount of energy required for RE-60 (0.35 kWh) was much less than for OHE (0.83 kWh). CONCLUSION This study provided an alternative processing method for the sugar processing industry to produce coconut sugar using the rotary evaporation method at 60 °C under 250 mbar vacuum with better physicochemical qualities, shorter processing time, and minimum input energy. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Muhammad T Asghar
- Department of Process and Food Engineering, Universiti Putra Malaysia, Serdang, Malaysia
- Department of Farm Machinery and Power, University of Agriculture, Faisalabad, Pakistan
| | - Yus A Yusof
- Department of Process and Food Engineering, Universiti Putra Malaysia, Serdang, Malaysia
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Malaysia
| | - Mohd N Mokhtar
- Department of Process and Food Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Mohammad E Yaacob
- Department of Process and Food Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Hasanah M Ghazali
- Department of Food Science, Universiti Putra Malaysia, Serdang, Malaysia
| | - Jaturapatr Varith
- Division of Food Engineering, Faculty of Engineering and Agro-Industry, Maejo University, Chiang Mai, Thailand
| | - Lee S Chang
- Department of Food Science, Universiti Putra Malaysia, Serdang, Malaysia
| | - Yanty N Manaf
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Malaysia
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24
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Wang H, Zhang W, Bai P, Xu L. Ultrasound-assisted transformation from waste biomass to efficient carbon-based metal-free pH-universal oxygen reduction reaction electrocatalysts. Ultrason Sonochem 2020; 65:105048. [PMID: 32203918 DOI: 10.1016/j.ultsonch.2020.105048] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/15/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
Efficient carbon-based nitrogen-doped electrocatalysts derived from waste biomass are regarded as a promising alternative to noble metal catalysts for oxygen reduction reaction (ORR), which is crucial to fuel cell performance. Here, coconut palm leaves are employed as the carbon source and a series of nitrogen-doped porous carbons were prepared by virtue of a facile and mild ultrasound-assisted method. The obtained carbon material (ANDC-900-10) conveys excellent pH-universal catalytic activity with onset potentials (Eonset) of 1.01, 0.91 and 0.84 V vs. RHE, half-wave potentials (E1/2) of 0.87, 0.74 and 0.66 V vs. RHE and limiting current densities (JL) of 5.50, 5.45 and 4.97 mA cm-2 in alkaline, neutral and acidic electrolytes, respectively, prevailing over the commercial Pt/C catalyst and, what's more, ANDC-900-10 displays preeminent methanol crossover resistance and long-term stability in the broad pH range (0-13), thanks to its abundant hierarchical nanopores as well as effective nitrogen doping with high-density pyridinic-N and graphitic-N. This work provides sonochemical insight for underpinning the eco-friendly approach to rationally designing versatile metal-free carbon-based catalysts toward the ORR at various pH levels.
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Affiliation(s)
- Huifen Wang
- MOE Key Laboratory of Coal Processing and Efficient Utilization, School of Chemical Engineering and Technology, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Wendu Zhang
- MOE Key Laboratory of Coal Processing and Efficient Utilization, School of Chemical Engineering and Technology, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Peiyao Bai
- MOE Key Laboratory of Coal Processing and Efficient Utilization, School of Chemical Engineering and Technology, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Lang Xu
- MOE Key Laboratory of Coal Processing and Efficient Utilization, School of Chemical Engineering and Technology, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu 221116, China.
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25
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Brito GM, Roldi LL, Schetino MÂ, Checon Freitas JC, Cabral Coelho ER. High-performance of activated biocarbon based on agricultural biomass waste applied for 2,4-D herbicide removing from water: adsorption, kinetic and thermodynamic assessments. J Environ Sci Health B 2020; 55:767-782. [PMID: 32586186 DOI: 10.1080/03601234.2020.1783178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Activated biocarbons were prepared using biomass wastes: sugarcane bagasse, coconut shell and endocarp of babassu coconut; as a renewable source of low-cost raw materials and without prior treatments. These activated biocarbons were characterized by textural analysis, solid-state 13C nuclear magnetic resonance spectroscopy, X-ray diffraction and scanning electronic microscopy. Textural analysis results revealed that those activated biocarbons were microporous, with specific surface area values of 547, 991 and 1,068 m2 g-1 from sugarcane bagasse, coconut shell and endocarp of babassu coconut, respectively. The innovation of this work was to evaluate which biomass residue was able to offer the best performance in removing 2,4-dichlorophenoxyacetic acid herbicide (2,4-D) from water by adsorption. Adsorption process of 2,4-D was investigated and the Langmuir and Redlich-Peterson models described best the adsorption process, with R2 values within 0.96-0.99. The 2,4-D removal performance were 97% and 99% for the coconut and babassu biocarbons, respectively. qM parameter values obtained from Langmuir model were 153.9, 233.0 and 235.5 mg g-1 using sugarcane bagasse, coconut shell and endocarp of babassu, respectively. In addition, the adsorption kinetics were described nicely by the second-order model and the Gibbs free energy parameter values were negative, pointing to a spontaneous adsorption, as well.
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Affiliation(s)
- Gilberto Maia Brito
- Departament of Environmental Engineering, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Larissa Lopes Roldi
- Departament of Environmental Engineering, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Miguel Ângelo Schetino
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Jair C Checon Freitas
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Edumar R Cabral Coelho
- Departament of Environmental Engineering, Federal University of Espírito Santo, Vitória, ES, Brazil
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Li J, Wang SL, Zhang J, Zheng L, Chen D, Wu Z, Shaheen SM, Rinklebe J, Ok YS, Wang H, Wu W. Coconut-fiber biochar reduced the bioavailability of lead but increased its translocation rate in rice plants: Elucidation of immobilization mechanisms and significance of iron plaque barrier on roots using spectroscopic techniques. J Hazard Mater 2020; 389:122117. [PMID: 31978821 DOI: 10.1016/j.jhazmat.2020.122117] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/09/2020] [Accepted: 01/14/2020] [Indexed: 05/20/2023]
Abstract
Coconut-fiber biochar (CFB) was applied at 3% (w/w) to two soils spiked with 250, 2500, 5000 mg kg-1 of lead (Pb), respectively, aiming to explore the effects of CFB and the significance of iron (Fe) plaque on rice roots on the accumulation and translocation of Pb in rice plants using micro-X-ray fluorescence and X-ray absorption spectroscopies. The CFB amendment resulted in a significant decrease in the EDTA-extractable Pb availability in the soils, which might be attributed to the increased amounts of Pb-loaded humic acid and Pb3(PO4)2 formed in the soils. Consequently, the addition of CFB caused a significant decrease in Pb concentrations of the brown rice harvested from the CFB-amended soils under all Pb levels by 14 %-47 %, as compared to those from the unamended soils. Therefore, CFB could be used as an immobilizing agent for Pb in contaminated soils. However, CFB application significantly inhibited the formation of Fe/Mn plaques on rice roots and reduced its interception effect on Pb uptake, which consequently increased the Pb translocation rate from root to shoot. Therefore, the increased translocation rate of Pb in rice plants by CFB should not be ignored when CFB is applied to remediate Pb-contaminated paddy soils.
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Affiliation(s)
- Jianhong Li
- School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China; College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Shan-Li Wang
- Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Jingmin Zhang
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Lirong Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
| | - Dongliang Chen
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
| | - Zhipeng Wu
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589, Jeddah, Saudi Arabia; University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33516, Kafr El-Sheikh, Egypt
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, Seoul 05006, Republic of Korea
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Hailong Wang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China; Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China.
| | - Weidong Wu
- College of Tropical Crops, Hainan University, Haikou 570228, China.
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Hajieghrari M, Hejazi P. Enhanced biodegradation of n-Hexadecane in solid-phase of soil by employing immobilized Pseudomonas Aeruginosa on size-optimized coconut fibers. J Hazard Mater 2020; 389:122134. [PMID: 32004840 DOI: 10.1016/j.jhazmat.2020.122134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/07/2020] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
In this research, biodegradation of hexadecane as a model contaminant in solid soil using both free and immobilized Pseudomonas Aeruginosa, capable of producing biosurfactant, was investigated. Coconut fibers in three mesh sizes were used as a cellulosic biocarrier for immobilization procedure. Bioremediation experiments were monitored for 60 days after incubation at 27 °C in small columns, containing contaminated solid soil, with the capability of aeration from bottom to top. The difference in the number of immobilized bacteria cells on the fibers with different particle sizes, emphasizes the importance of choosing an optimized carrier size. Enhancement in hexadecane degradation up to 50 % at the end of experiments was achieved by immobilized Pseudomonas Aeruginosa on the fibers with a mesh size between 8 and 16 compared to inoculation of free bacteria cells into the soil. Effect of mixing the pretreated fibers with soil and inoculating free cells into this mixture was also investigated compared to free cell experiments without fiber, which led to 28 % decrease in hexadecane degradation. Obtained kinetic equations for experiments confirm the impact of immobilization of bacteria on the enhancement of biodegradation rate and reduction of the half-life of the contaminant is soil.
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Affiliation(s)
- Mahdiyeh Hajieghrari
- Biotechnology Research Laboratory, School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Zip Code: 16846-13114, Tehran, Iran
| | - Parisa Hejazi
- Biotechnology Research Laboratory, School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Zip Code: 16846-13114, Tehran, Iran.
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28
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Yoshida K, Kaino M, Sekiguchi M, Chigira N, Amano Y, Inokuchi M, Li Q, Hasegawa T. Self-assembly of bacteria cellulose hydrogels carrying multiple carbohydrate appendages to visualize carbohydrate-carbohydrate interactions. Carbohydr Polym 2019; 223:115062. [PMID: 31426967 DOI: 10.1016/j.carbpol.2019.115062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/28/2019] [Accepted: 07/05/2019] [Indexed: 11/19/2022]
Abstract
Nata de coco was chemically modified to afford the bacterial cellulose hydrogels carrying terminal alkynes. The resultant hydrogels were then converted into hydrogels carrying lactosides or those carrying α-2,3-sialyllactosides by the Cu+-catalyzed alkyne-azide cyclization. The stable homo association of the hydrogels carrying lactosides was observed in an aqueous solution containing Ca2+, thereby demonstrating the Ca2+-mediated lactoside-lactoside interactions. Ca2+ also stabilized the hetero associations among the hydrogels carrying lactosides and those carrying α-2,3-sialyllactosides, thereby also demonstrating the Ca2+-induced interactions between the lactosides and the α-2,3-sialyllactosides. The sizes of these hydrogels were of the order of ca. 5 mm, and their associations could thus be readily monitored with the naked eye.
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Affiliation(s)
- Keisuke Yoshida
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Mizuki Kaino
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Maki Sekiguchi
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Naoto Chigira
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Yoshitsugu Amano
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Mayu Inokuchi
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Qintong Li
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Teruaki Hasegawa
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan; Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan.
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29
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Binh QA, Tungtakanpoung D, Kajitvichyanukul P. Similarities and differences in adsorption mechanism of dichlorvos and pymetrozine insecticides with coconut fiber biowaste sorbent. J Environ Sci Health B 2019; 55:103-114. [PMID: 31607259 DOI: 10.1080/03601234.2019.1674593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, the similarities and differences of the adsorption mechanisms between dichlorvos and pymetrozine and coconut fiber biowaste sorbent (CF-BWS) were investigated. CF-BWS was produced using the slow pyrolysis process at 600 °C for 4 h. HCl acid modification was used to improve the specific surface area. The properties of CF-BWS were analyzed by SEM, FT-IR, BET, and pHpzc. The adsorption kinetics of dichlorvos and pymetrozine on the CF-BWS were well explained by the pseudo-second-order model. The adsorption isotherms for both insecticides were followed the Langmuir isotherm. The difference in molecular structures and surface chemistry caused the difference in adsorption mechanisms of both insecticides. The pore-filling and the hydrophobic interactions were the key mechanisms for both insecticide adsorptions. However, the π-π electron donor-acceptor interaction played the major role in the pymetrozine adsorption but hardly impacted on the adsorption of dichlorvos. The hydrogen bonding mechanism was pronounced in the pymetrozine adsorption, but it had little influence on the dichlorvos adsorption. The CF-BWS is exhibited as an excellent material for the removal of both pollutants and has high potential to be used further as the adsorbent in water treatment process.
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Affiliation(s)
- Quach An Binh
- Center of Excellence on Environmental Research and Innovation, Faculty of Engineering, Naresuan University, Phitsanulok, Thailand
- Faculty of Applied Sciences-Health, Dong Nai Technology University, Dong Nai, Vietnam
| | - Dondej Tungtakanpoung
- Center of Excellence on Environmental Research and Innovation, Faculty of Engineering, Naresuan University, Phitsanulok, Thailand
| | - Puangrat Kajitvichyanukul
- Center of Excellence on Environmental Research and Innovation, Faculty of Engineering, Naresuan University, Phitsanulok, Thailand
- Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, Thailand
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Gondhalekar SC, Shukla SR. Enhanced adsorption performance of oxidised coconut coir for removal of Cd(II) ions by multi-column arrangement in series. Environ Sci Pollut Res Int 2019; 26:28022-28030. [PMID: 31352599 DOI: 10.1007/s11356-019-05995-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 07/16/2019] [Indexed: 06/10/2023]
Abstract
Biosorption potential of oxidised coconut coir (OCC) for removal of Cd(II) was evaluated by multi-column arrangement by connecting three columns in series. Effect of flow rate at 5, 10 and 15 mL/min was studied at 30 mg/L initial Cd(II) concentration. The dynamic capacity of the system was found to be 321, 206 and 83 mg/L for 5, 10 and 15 mL/min flow rates, respectively, by applying the bed depth service time model. Biosorbent usage rates for single-column and multi-column systems were compared. Better utilisation of biosorbent was observed when the columns are connected in series at similar operating parameters. A simple acid-base regeneration procedure was found to be effective in desorbing/regenerating the cadmium bound biosorbent. Adsorption efficiency was found to decrease from 76.3% for the first cycle to 72.2% and 70.6% in the second and third cycles, respectively. Regeneration efficiencies were more than 94% up to 3 cycles. The study highlights the effectiveness of the multi-column system in biosorption against the conventional single-column system.
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Affiliation(s)
- Sachin C Gondhalekar
- Department of Fibres and Textile Processing Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai, 400019, India
| | - Sanjeev R Shukla
- Department of Fibres and Textile Processing Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai, 400019, India.
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Ferreira JA, Santos JM, Breitkreitz MC, Ferreira JMS, Lins PMP, Farias SC, de Morais DR, Eberlin MN, Bottoli CBG. Characterization of the lipid profile from coconut (Cocos nucifera L.) oil of different varieties by electrospray ionization mass spectrometry associated with principal component analysis and independent component analysis. Food Res Int 2019; 123:189-197. [PMID: 31284967 DOI: 10.1016/j.foodres.2019.04.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 04/07/2019] [Accepted: 04/21/2019] [Indexed: 11/18/2022]
Abstract
Coconut oil (CO) from fifteen different varieties of coconuts (Cocos nucifera L.) and one CO processed on an industrial scale were analyzed by electrospray ionization mass spectrometry (ESI-MS) and the data processed using the chemometric tools principal component analysis and independent component analysis. ESI-MS fingerprinting of lipid compounds showed predominance of diacylglycerols and triacylglycerols, as confirmed by high-resolution MS measurements. Chemometric processing of the ESI-MS data differentiated the coconut oil samples, showing that different coconut varieties/cultivars produce oils with distinguishable abundances of lipidic compounds. Thus ESI-MS analysis followed by data treatment using chemometric tools offers a tool able to classify the industrial coconut oils in a fast, simple and effective way, as well as serving as a potential method to identify the coconut varieties by the CO origin, and the occurrence of any adulteration. The procedure may also be applied for quality control of the industrial processes.
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Affiliation(s)
- Jordana Alves Ferreira
- Institute of Chemistry, University of Campinas, UNICAMP, POB 6154, 13083-970 Campinas, SP, Brazil
| | - Jandyson Machado Santos
- Institute of Chemistry, University of Campinas, UNICAMP, POB 6154, 13083-970 Campinas, SP, Brazil; Department of Chemistry, Federal University of Pernambuco, 52171-900, Recife, PE, Brazil
| | | | - Joana Maria Santos Ferreira
- Department of Agricultural Engineering, Embrapa Tabuleiros Costeiros, Av. Beira Mar, n° 3250, 49025-040 Aracaju, SE, Brazil
| | | | | | | | - Marcos Nogueira Eberlin
- Institute of Chemistry, University of Campinas, UNICAMP, POB 6154, 13083-970 Campinas, SP, Brazil
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Lu X, Chen J, Zheng M, Guo J, Qi J, Chen Y, Miao S, Zheng B. Effect of high-intensity ultrasound irradiation on the stability and structural features of coconut-grain milk composite systems utilizing maize kernels and starch with different amylose contents. Ultrason Sonochem 2019; 55:135-148. [PMID: 30853534 DOI: 10.1016/j.ultsonch.2019.03.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/17/2019] [Accepted: 03/04/2019] [Indexed: 05/28/2023]
Abstract
In this paper, a coconut milk composite system (glycerin monostearate as an emulsifier) with different maize additives (e.g., maize kernels and starch with different amylose contents) was treated with high-intensity ultrasound irradiation (HIUS, frequency 20 kHz). The stability and structural features of the added coconut milk emulsion were studied. Comparing the mechanical emulsifications, coconut milk with maize kernels was similar to coconut milk with high-amylose maize starch. However, coconut milk with a high proportion of amylopectin had the best stability. After ultrasonic treatment, the particle sizes were found to be smaller than those in the nonultrasound-treated coconut milk, and the particles demonstrated a monomodal size distribution. The electronegativity of the compound system was significantly improved. The electronegativity of the maize kernel and high-amylose maize starch-coconut milk systems was significantly decreased, and this change was beneficial to the stability of the systems. However, ultrasonic treatment did not change the fluid type of the coconut milk compound system (which showed pseudoplastic fluid characteristics). The proportion of amylose in maize had an important influence on the stability of the compound system. The apparent viscosity and crystallization order of the high-amylose maize starch-coconut milk system were high. However, the waxy maize starch system showed high complex viscosity and tended to be liquid with ultrasonic treatment. Ultrasound treatment reduced the particle size of coconut milk and homogenized the distribution of the system. Additionally, the amylase of the system contained amylose encapsulated in the interfacial layer after ultrasound treatment. The tiny gel beads formed by waxy maize starch had a good fusion effect on coconut milk fat/protein droplets. The results indicated that the stability of coconut-grain milk composite systems can be enhanced with the use of maize additives and ultrasound irradiation through space effects, electrostatic effects and continuous phase viscosity.
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Affiliation(s)
- Xu Lu
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; Teagasc Food Research Centre, Food Chemistry and Technology Department, Moorepark, Fermoy, Co.Cork, Ireland; Institute of Food Science and Technology, Fujian Agriculture and Forestry University, 18 Simon Pit Road, 350002 Fuzhou, China; China-Ireland International Cooperation Center for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, 350002 Fuzhou, China; Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jinghao Chen
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; China-Ireland International Cooperation Center for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, 350002 Fuzhou, China
| | - Mingjing Zheng
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Juanjuan Guo
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jingxuan Qi
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China
| | - Yingtong Chen
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; China-Ireland International Cooperation Center for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, 350002 Fuzhou, China
| | - Song Miao
- Teagasc Food Research Centre, Food Chemistry and Technology Department, Moorepark, Fermoy, Co.Cork, Ireland; College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; China-Ireland International Cooperation Center for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, 350002 Fuzhou, China.
| | - Baodong Zheng
- College of Food Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, 350002 Fuzhou, China; Institute of Food Science and Technology, Fujian Agriculture and Forestry University, 18 Simon Pit Road, 350002 Fuzhou, China; China-Ireland International Cooperation Center for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, 350002 Fuzhou, China; Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Tu R, Sun Y, Wu Y, Fan X, Wang J, Shen X, He Z, Jiang E, Xu X. Effect of surfactant on hydrothermal carbonization of coconut shell. Bioresour Technol 2019; 284:214-221. [PMID: 30939383 DOI: 10.1016/j.biortech.2019.03.120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 06/09/2023]
Abstract
The effect of surfactant on the hydrothermal carbonization performance and pseudo-lignin formation were investigated. Especially, the fuel properties and combustion characteristics of hydrochar and solid product were determined. Furthermore, the mechanism of surfactant acted in hydrothermal carbonization was also identified in this article. The results showed that surfactant improved the content of solid products, lignin, heavy bio-oil (HBO), H2 and CO. Moreover, sodium dodecylbenzenesulfonate promoted the increase of the surface area of hydrochar from 4.93 to 41.43 m2/g. The mechanism showed surfactant formed water/oil film around the hydrochar to prevent HBO from leaving the pore or surface of hydrochar and promoted the condensation and polymerization of 5-hydroxymethylfurfura (5-HMF) with hydroxymethylfurfura (HMF) to form pseudo-lignin. The HBO and pseudo-lignin were beneficial for improving integrated combustion characteristic index (SN) during combustion. The article provides a new method to promote hydrothermal carbonization (HTC) for obtaining high value hydrochar as fuels.
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Affiliation(s)
- Ren Tu
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Yan Sun
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Yujian Wu
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Xudong Fan
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Jiamin Wang
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Xiaowen Shen
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Zhen He
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China
| | - Enchen Jiang
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China.
| | - Xiwei Xu
- College of Materials and Energy in South China Agricultural University, Guangzhou 510640, China.
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Yang B, Liu Y, Liang Q, Chen M, Ma L, Li L, Liu Q, Tu W, Lan D, Chen Y. Evaluation of activated carbon synthesized by one-stage and two-stage co-pyrolysis from sludge and coconut shell. Ecotoxicol Environ Saf 2019; 170:722-731. [PMID: 30580167 DOI: 10.1016/j.ecoenv.2018.11.130] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/24/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
Waste biomass and sewage sludge were used to obtain an adsorbent material with excellent performance qualities by adopting a KOH activation process via one-stage (ACone) or two-stage (ACtwo) co-pyrolysis. The main purpose of this work was to investigate the effects of both methods in terms of the physicochemical properties and adsorption capacities for methylene blue (MB). Textural analyses revealed that the surface area (Stot= 683.82 m2/g) and total pore volume (Vtot= 0.72 cm3/g) of ACtwo were more than two-fold compared with ACone (Stot= 285.33 m2/g; Vtot= 0.35 cm3/g). Thus, two-stage co-pyrolysis produced activated carbon with increased porosity, which was favorable for MB adsorption. Nevertheless, the intensity of the surface functional groups of ACtwo was weaker than for ACone, which could be due to the pore-forming mechanism. Two-stage co-pyrolysis increased the yield and aromaticity of activated carbon, but sufficient activation caused more functional groups to decompose. For the adsorbate MB, the maximum adsorption capacity of ACtwo (602.80 mg/g) was more than five-fold greater than that of ACone (101.88 mg/g), due to its excellent porosity properties. Furthermore, the interactions of MB molecules with activated carbon were via hydrogen bonds and electrostatic attraction. The adsorption process of MB onto activated carbon was accurately described by the pseudo-second-order kinetic model. Adsorption equilibrium evaluated Langmuir isotherms demonstrated that MB formed a monolayer by adsorption onto the activated carbon. Adsorption thermodynamics was used to investigate the influence of temperature on the adsorption process. Thermodynamic parameters indicated that MB adsorption onto activated carbon was spontaneous and endothermic. In conclusion, our results showed that two-stage co-pyrolysis improves the adsorption capabilities of activated carbon, so achieving better economic value from waste materials.
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Affiliation(s)
- Bing Yang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China; Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Yucheng Liu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China; Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu 610500, Sichuan, China.
| | - Qingling Liang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Mingyan Chen
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China; Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Lili Ma
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China; Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Lingli Li
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China; Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Qian Liu
- Sichuan Academy of Environmental Sciences, Chengdu 610041, Sichuan, China
| | - Wenwen Tu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Dawei Lan
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Yuanyuan Chen
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
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Tayler NM, Boya CA, Herrera L, Moy J, Ng M, Pineda L, Almanza A, Rosero S, Coronado LM, Correa R, Santamaría R, Caballero Z, Durant-Archibold AA, Tidgewell KJ, Balunas MJ, Gerwick WH, Spadafora A, Gutiérrez M, Spadafora C. Analysis of the antiparasitic and anticancer activity of the coconut palm (Cocos nucifera L. ARECACEAE) from the natural reserve of Punta Patiño, Darién. PLoS One 2019; 14:e0214193. [PMID: 30939131 PMCID: PMC6445518 DOI: 10.1371/journal.pone.0214193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/09/2019] [Indexed: 01/01/2023] Open
Abstract
Cocos nucifera (C. nucifera) (the coconut palm tree) has been traditionally used to fight a number of human diseases, but only a few studies have tested its components against parasites such as those that cause malaria. In this study, C. nucifera samples were collected from a private natural reserve in Punta Patiño, Darien, Panama. The husk, leaves, pulp, and milk of C. nucifera were extracted and evaluated against the parasites that cause Chagas’ disease or American trypanosomiasis (Trypanosoma cruzi), leishmaniasis (Leishmania donovani) and malaria (Plasmodium falciparum), as well as against a line of breast cancer cells. While there was no activity in the rest of the tests, five and fifteen-minute aqueous decoctions of leaves showed antiplasmodial activity at 10% v/v concentration. Removal of some HPLC fractions resulted in loss of activity, pointing to the presence of synergy between the components of the decoction. Chemical molecules were separated and identified using an ultra-performance liquid chromatography (UPLC) approach coupled to tandem mass spectrometry (LC–MS/MS) using atmospheric pressure chemical ionization quadrupole–time of flight mass spectrometry (APCI–Q–TOF–MS) and molecular networking analysis, revealing the presence of compounds including polyphenol, flavone, sterol, fatty acid and chlorophyll families, among others.
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Affiliation(s)
- Nicole M. Tayler
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, A.P., India
| | - Cristopher A. Boya
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, A.P., India
- Centro de Biodiversidad y Descubrimiento de Drogas, INDICASAT AIP, City of Knowledge, Apartado, Panama, Republic of Panama
| | - Liuris Herrera
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Jamie Moy
- Smithsonian Tropical Research Institute, Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Michelle Ng
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Laura Pineda
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Alejandro Almanza
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Sara Rosero
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
| | - Lorena M. Coronado
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, A.P., India
| | - Ricardo Correa
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, A.P., India
| | - Ricardo Santamaría
- Centro de Biodiversidad y Descubrimiento de Drogas, INDICASAT AIP, City of Knowledge, Apartado, Panama, Republic of Panama
| | - Zuleima Caballero
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
| | - Armando A. Durant-Archibold
- Centro de Biodiversidad y Descubrimiento de Drogas, INDICASAT AIP, City of Knowledge, Apartado, Panama, Republic of Panama
| | - Kevin J. Tidgewell
- Smithsonian Tropical Research Institute, Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Marcy J. Balunas
- Division of Medicinal Chemistry, Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut, United States of America
| | - William H. Gerwick
- Skaggs School of Pharmacy and Pharmaceutical Sciences Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, United States of America
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, United States of America
| | - Alida Spadafora
- Asociación Nacional para la Conservación de la Naturaleza (ANCON), Balboa, Ancon, Apartado, Panama, Republic of Panama
| | - Marcelino Gutiérrez
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, A.P., India
| | - Carmenza Spadafora
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Apartado, Panama, Republic of Panama
- * E-mail:
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Binh QA, Kajitvichyanukul P. Adsorption mechanism of dichlorvos onto coconut fibre biochar: the significant dependence of H-bonding and the pore-filling mechanism. Water Sci Technol 2019; 79:866-876. [PMID: 31025965 DOI: 10.2166/wst.2018.529] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The adsorption mechanism of dichlorvos onto coconut fibre biochar (CFB) was investigated by the batch adsorption technique. Coconut fibre waste material was synthesised at 600 °C for 4 h under oxygen-limited conditions. The biochar was modified by HCl acid to enhance the specific surface area and porosity. The characteristics of the biochar were analysed by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) specific surface area, and Fourier transform-infrared (FT-IR). The results showed that the BET specific surface area of biochar was 402.4 m2/g. Experimental data presented a good fit to Langmuir isotherm and the pseudo-second-order model. Langmuir isotherm illustrated that monolayer adsorption of dichlorvos occurred on the surface of CFB, with a maximum adsorption capacity of 90.9 mg/g. The diffusion model confirmed that the liquid film diffusion was the rate-limiting step, and the major diffusion mechanism of dichlorvos onto biochar. The BET result after dichlorvos adsorption demonstrated that pore-filling occurred and occupied 58.27%. The pore-filling and chemical interactions, performed important roles in the adsorption of dichlorvos onto CFB. Chemical adsorption is comprised of two interactions, which are hydrophobic and H-bonding, but the prime is H-bonding. CFB is a very potential material for the removal of dichlorvos and environmental pollutants.
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Affiliation(s)
- Quach An Binh
- Center of Excellence on Environmental Research and Innovation, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand E-mail: ; On leave from Dong Nai Technology University, Dong Nai, Vietnam
| | - Puangrat Kajitvichyanukul
- Center of Excellence on Environmental Research and Innovation, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand E-mail:
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Mahnot NK, Mahanta CL, Keener KM, Misra NN. Strategy to achieve a 5-log Salmonella inactivation in tender coconut water using high voltage atmospheric cold plasma (HVACP). Food Chem 2019; 284:303-311. [PMID: 30744862 DOI: 10.1016/j.foodchem.2019.01.084] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 12/07/2018] [Accepted: 01/08/2019] [Indexed: 11/18/2022]
Abstract
This study examined high voltage atmospheric cold plasma (HVACP) technology as a non-thermal intervention for inactivating Salmonella enterica serovar Typhimurium LT2 (ST2) in tender coconut water (TCW). Treatment with HVACP in air at 90 kV for 120 s inactivated 1.30 log10 of ST2. Development of a TCW stimulant suggested an interfering role of magnesium and phosphate salts with HVACP inactivation. Generation of reactive gas species, viz. ozone and hydrogen peroxides were found to be responsible for microbial inactivation. The addition of 400 ppm citric acid to the TCW effectively reduced ST2 by 5 log10 during HVACP treatment. Under these conditions, higher cellular leakage and morphological damage were observed in ST2. Minimal physico-chemical changes in TCW were observed with HVACP treatment, except for an 84.35% ascorbic acid loss (added externally). These results demonstrate a potential pathway for developing highly effective cold plasma treatments to preserve fruit and vegetable juices.
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Affiliation(s)
- Nikhil Kumar Mahnot
- Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam, India; Department of Food Sciences, Purdue University, West Lafayette, IN, USA
| | - Charu Lata Mahanta
- Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam, India.
| | - Kevin M Keener
- Department of Food Sciences, Purdue University, West Lafayette, IN, USA; Center for Crops Utilization Research, Iowa State University, Ames, IA, USA; BioCentury Research Farm, Iowa State University, Ames, IA, USA.
| | - N N Misra
- Center for Crops Utilization Research, Iowa State University, Ames, IA, USA.
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Abstract
BACKGROUND AND OBJECTIVE Coconut flour is known to be highly nutritious flour and contains high dietary fiber. The aim of this study was to make "bio-yoghurt beverage grafted with coconut flour and containing probiotic bacteria which is recommended as a functional milk product. MATERIALS AND METHODS Chemical, phytochemical studies and antimicrobial activity have been performed on coconut flour which was used to make the beverage. Bio-yoghurt beverages made with different ratios of coconut flour (0, 2, 4 and 6%) were chemical, microbiological and sensory tested when fresh and during storage for 15 days of cold storage. RESULTS Chemical composition of coconut flour showed reasonable contents of moisture, ash, fat, fatty acids, protein, crude fiber, total solids, total phenols and antioxidants. Coconut flour showed antibacterial activity against some foodborne pathogenic bacteria. The addition of coconut flour to make bio-yoghurt beverages increased its contents of total solids, protein, ash, fiber, acidity, antioxidant activity, total phenols, improved yoghurt sensory and rheological properties especially when probiotic bacteria were used. The results did not reveal any significant differences (p>0.05), between the bacterial counts of yoghurt starter culture, Lactobacillus rhamnosus, Lactobacillus casei in yoghurt control (without coconut) and bio-yoghurt treatments (with coconut), during cold storage. Moulds and yeasts were not detected in all bio-yoghurt treatments; meanwhile they appeared in yoghurt control after 15 days indicating coconut antifungal activity and subsequently a period of time to save more for this drink. All bio-yoghurt beverages with different ratios of coconut flour were sensory accepted and showed more favorable properties, particularly for the viscosity. CONCLUSION A new functional dairy product of bio-yoghurt beverage contain coconut flour high fiber content was prepared with probiotic bacteria and showed good chemical, microbiological and sensory/rheological properties.
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Jiang CB, Li JK, Zhang BH, Ruan TS, Li HE, Dong W. Design parameters and treatment efficiency of a retrofit bioretention system on runoff nitrogen removal. Environ Sci Pollut Res Int 2018; 25:33298-33308. [PMID: 30259319 DOI: 10.1007/s11356-018-3267-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
Mixed media design is key factor that affects the operation of bioretention systems. In this study, four types of modifiers, namely, water treatment residual (WTR), green zeolite, fly ash, and coconut bran, were mixed with traditional bioretention soil (65% sand + 30% soil + 5% sawdust, by mass). Consequently, four kinds of modified media were obtained. Ten pilot-scale bioretention basins were constructed by setting different configurations. The steady infiltration rates of the modified packing bioretention systems were 3.25~62.78 times that of plant soil, which was 2.88~55.75 m/day. Results showed that the average concentration removal (ACR) of both mixed and layered fly ash and WTR were better than those of the other media, and the effects could reach over 61.92%. In the bioretention basins with WTR as the modifier, the treatment efficiency of nitrogen under the submerged zone height of 150 mm was relatively optimal, and ACR could reach 65.46%. Outflow total nitrogen (TN) load was most influenced by inflow load, and the correlation coefficient was above 0.765. Relative to the change of inflow concentration (IC), the change of recurrence interval (RI) and discharge ratio (DR) was more sensitive to TN load reduction. The reduction rate of TN load decreased by approximately 15% when the recurrence interval increased from 0.5 to 3 years. It decreased by approximately 12% when the discharge ratio increased from 10 to 20. This study will provide additional insights into the treatment performance of retrofit bioretention systems, and thus, can guide media and configuration design, effect evaluation, and related processes.
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Affiliation(s)
- Chun-Bo Jiang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China
| | - Jia-Ke Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China.
| | - Bin-Hong Zhang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China
| | - Tian-Shun Ruan
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China
| | - Huai-En Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China
| | - Wen Dong
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China
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Hao Z, Wang C, Yan Z, Jiang H, Xu H. Magnetic particles modification of coconut shell-derived activated carbon and biochar for effective removal of phenol from water. Chemosphere 2018; 211:962-969. [PMID: 30119027 DOI: 10.1016/j.chemosphere.2018.08.038] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/06/2018] [Accepted: 08/08/2018] [Indexed: 06/08/2023]
Abstract
The separation and recovery of pollutant-loaded magnetic carbon materials from organic contaminated environment is recently concerned, but the change of sorption ability and mechanism of activated carbon and biochar caused by magnetic particles modification still need to be explored. Here, the magnetic modification of two coconut shell-, coal-derived activated carbon and one biochar, and its effect on the removal of phenol from water were investigated. Magnetic activated carbon (MAC) and magnetic biochar (MBC) were prepared by co-precipitation. The increase of mass magnetic susceptibilities and energy dispersive X-ray spectroscopy (EDX) analysis showed that magnetic particles were successfully coated on the surface of virgin carbonaceous materials (VCMs). Magnetic modification enhanced the surface area and pore volume of activated carbon, and preserved those structure properties of biochar. Magnetic activated carbon had lower adsorption rates (10.641 g mg-1·min-1) than virgin activated carbon (20.575 g mg-1·min-1) while magnetic biochar exhibited higher adsorption rate (0.618 g mg-1·min-1) compared with virgin biochar (0.040 g mg-1·min-1), which were related to mass transport process. Data from Langmuir model results suggested that maximum adsorption capacities of three carbon adsorbents were increased by magnetic modification. The enhanced removal of phenol after magnetizing process may attribute to the increase of specific surface area and pore volume. Among VCMs/MCCs, magnetic coconut shell-derived carbon material with 951.84 m2/g surface area exhibited the most organic contaminant sorption performance. This finding gives insight into the adsorption mechanism of magnetic AC/BC for phenol, and provides a guidance to choose the appropriate magnetic composites to remove the organic contaminant effectively.
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Affiliation(s)
- Zheng Hao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Zaisheng Yan
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Helong Jiang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Huacheng Xu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
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Lee EJ, Oh H, Kang BG, Kang MK, Kim DY, Kim YH, Lee JY, Ji JG, Lim SS, Kang YH. Lipid-Lowering Effects of Medium-Chain Triglyceride-Enriched Coconut Oil in Combination with Licorice Extracts in Experimental Hyperlipidemic Mice. J Agric Food Chem 2018; 66:10447-10457. [PMID: 30244576 DOI: 10.1021/acs.jafc.8b04080] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Coconut oil has gained in popularity over recent years as a healthy oil due to its potential cardiovascular benefits. Coconut oil contains medium chain triglycerides (MCT) including lauric acid and capric acid that display beneficial properties in human health. Licorice ( Glycyrrhiza uralensis) is used as a sweetener and in traditional Chinese medicine with anti-inflammatory, antimicrobial, and antioxidant activities. This study investigated the in vivo effects of medium chain-triglycerides (MCT)-coconut oil (MCO) and its combination with licorice extract (LE-MCO) on serum lipid profile, hepatic steatosis, and local fat pad proteins in diet-induced obese mice. No liver toxicity was observed in 45% fat diet (HFD)-fed mice orally treated with LE, MCO, and LE-MCO for 12 weeks. Their supplementation reduced HFD-enhanced body weight, blood glucose, and insulin in mice. Plasma levels of both PLTP and LCAT were boosted in LE-MCO-administered mice. Supplementation of LE-MCO diminished plasma levels of TG and TC with concomitant reduction of the LDL-C level and tended to raise blood HDL-C level compared to that of HFD alone-mice. Treatment of LE-MCO encumbered the hepatic induction of hepatosteatosis-related proteins of SREBP2, SREBP1c, FAS, ACC, and CD36 in HFD-fed mice. Substantial suppression of this induction was also observed in the liver of mice treated with MCO. Oral administration of LE-MCO to HFD mice boosted hepatic activation of AMPK and the induction of UCP-1 and FATP1 in brown fat. Conversely, LE-MCO disturbed hepatic PPAR-LXR-RXR signaling in HFD-fed animals and reversed HFD-elevated epididymal PPARγ. Collectively, oral administration of LE-MCO may impede hyperlipidemia and hepatosteatosis through curtailing hepatic lipid synthesis.
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Affiliation(s)
- Eun-Jung Lee
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | - Hyeongjoo Oh
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | - Beom Goo Kang
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | - Min-Kyung Kang
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | - Dong Yeon Kim
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | - Yun-Ho Kim
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | | | | | - Soon Sung Lim
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
| | - Young-Hee Kang
- Department of Food Science and Nutrition , Hallym University , Chuncheon 24252 , Korea
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Chen P, Chen W, Jiang S, Zhong Q, Chen H, Chen W. Synergistic Effect of Laccase and Sugar Beet Pectin on the Properties of Concentrated Protein Emulsions and Its Application in Concentrated Coconut Milk. Molecules 2018; 23:molecules23102591. [PMID: 30308985 PMCID: PMC6222823 DOI: 10.3390/molecules23102591] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/07/2018] [Accepted: 10/09/2018] [Indexed: 11/16/2022] Open
Abstract
Concentrated coconut milk (CCM), a raw material from coconut products, is extremely unstable because of its high oil content (>30%). In this study, three model emulsions-primary emulsions stabilized by coconut proteins only, secondary emulsions stabilized by the conjugation of sugar beet pectin (SBP) and coconut protein, and laccase-treated secondary emulsions-were prepared to investigate the effects of different factors (coconut proteins, coconut proteins + SBP, laccase-treated emulsions) on the stability of model emulsions and the application of this method to real CCM. The stability of the emulsions was evaluated based on their interfacial tension, zeta potential, particle size distribution, rheological properties, and the assembly formation of SBP and coconut protein at the oil⁻water interface. Results showed that addition of SBP or laccase can increase the viscosity and reduce the interfacial tension of the emulsion, and the effect was concentration dependent. Zeta potential of the emulsion decreased with the increase of protein (from -16 to -32 mV) and addition of SBP (from -32 to -46 mV), and it was reduced when laccase was added (from -9.5 to -6.0 mV). The secondary emulsion exhibited the narrowest particle size distribution (from 0.1 to 20 μm); however, laccase-catalyzed secondary emulsions showed the best storage stability and no layering when the laccase content reached 10 U/100 g. Confocal laser scanning microscopy (CLSM) revealed that protein was adsorbed on the oil⁻water interface and SBP distributed in the continuous phase could undergo oxidative crosslinking by laccase. These results show that the stability of the concentrated emulsion can be effectively improved by adding SBP and laccase.
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Affiliation(s)
- Pusen Chen
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Wenxue Chen
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Shan Jiang
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Qiuping Zhong
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Haiming Chen
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Weijun Chen
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
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Hu SC, Chen YC, Lin XZ, Shiue A, Huang PH, Chen YC, Chang SM, Tseng CH, Zhou B. Characterization and adsorption capacity of potassium permanganate used to modify activated carbon filter media for indoor formaldehyde removal. Environ Sci Pollut Res Int 2018; 25:28525-28545. [PMID: 30091073 DOI: 10.1007/s11356-018-2681-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 06/27/2018] [Indexed: 06/08/2023]
Abstract
This study examined the effect of potassium permanganate (KMnO4)-modified activated carbon for formaldehyde removal under different face velocities and different initial formaldehyde concentrations in building environment. We chose the coconut shell activated carbon due to their high density and purity. Moreover, they have a clear environmental advantage over coal-based carbons, particularly in terms of acidification potential. The chemical properties were characterized by FTIR to show the functional groups, EDS to calculate each component of their energy bands to know how the ratio is. Also, the morphology of the surface was examined with scanning electron microscopy (SEM). The BET determines specific surface area, pore size, and pore volume. It was found that where the initial formaldehyde concentration and the face velocity are low, adsorption capacity is high. The adsorption isotherms of formaldehyde on modified activated carbon are well fitted by both Langmuir and Freundlich equations. The rate parameter for the pseudo-first-order model, pseudo-second-order model, and intraparticle diffusion model was compared. The correlation coefficient of pseudo-second-order kinetic model (0.999 > R2 > 0.9548) is higher than the coefficient of pseudo-first-order kinetic model (0.5785 < R2 < 0.8755) and intraparticle diffusion model (0.9752 < R2 < 0.9898). Thus, pseudo-second-order kinetic model is more apposite to discuss the adsorption kinetic in this test, and the overall rate of the modified activated carbon adsorption process appears to be influenced by more than one step that is both the intraparticle diffusion model and membrane diffusion.
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Affiliation(s)
- Shih-Cheng Hu
- Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung Hsiao E Road, Taipei, 10608, Taiwan, Republic of China
| | - Ying-Chen Chen
- Department of Molecular Science and Technology, National Taipei University of Technology, Taipei, Taiwan, Republic of China
| | - Xin-Zhi Lin
- Department of HVAC, College of Urban Construction, Nanjing Tech University, Nanjing, China
| | - Angus Shiue
- Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung Hsiao E Road, Taipei, 10608, Taiwan, Republic of China.
| | - Po-Hua Huang
- Institute of Environment Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, Republic of China
| | - Yen-Che Chen
- Department of Molecular Science and Technology, National Taipei University of Technology, Taipei, Taiwan, Republic of China
| | - Shu-Mei Chang
- Department of Molecular Science and Technology, National Taipei University of Technology, Taipei, Taiwan, Republic of China
| | - Chao-Heng Tseng
- Institute of Environment Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, Republic of China
| | - Bin Zhou
- Department of HVAC, College of Urban Construction, Nanjing Tech University, Nanjing, China
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Zhao X, Zeng X, Qin Y, Li X, Zhu T, Tang X. An experimental and theoretical study of the adsorption removal of toluene and chlorobenzene on coconut shell derived carbon. Chemosphere 2018; 206:285-292. [PMID: 29753291 DOI: 10.1016/j.chemosphere.2018.04.126] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/02/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
The adsorption performance of toluene and chlorobenzene on prepared coconut shell derived carbon (CDC) is investigated and compared with commercial activated carbon (CAC) by experiment and theory calculation. Textural properties of prepared adsorbents are characterized by N2 adsorption, infrared spectra (FT-IR), Raman spectra and X-ray photoelectron spectra (XPS). Adsorption isotherms of toluene and chlorobenzene are obtained and fitted using structure optimizations, Grand Canonical Monte Carlo (GCMC) simulation and thermodynamic models. The results indicate that CDC shows better volatile organic compounds (VOCs) removal performance than CAC, and chlorobenzene is easily adsorbed than toluene. On the aspect of textural characteristics, CDC possesses more micropores ratio and narrower pore size distribution than CAC. Furthermore, amounts of electron-withdrawing carbonyl groups on the CAC surface reduce the electron density of adsorbents, thus weakening the interaction between VOCs and adsorbents. On the aspect of model fitting, the Yoon and Nelson (Y-N) and Dubinin-Astakhov (D-A) models can well describe the dynamic adsorption and the adsorption equilibrium of toluene and chlorobenzene on CDC respectively. It is believed that substituent groups of adsorbates, making the charge distribution deviate, lead to adsorption potentials of chlorobenzene larger than toluene. In general, both the pore structure and the surface property of adsorbents affect the VOCs adsorption behaviors on CDC.
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Affiliation(s)
- Xiaoyan Zhao
- School of Space and Environment, Beihang University, Beijing, 100191, PR China
| | - Xiaolan Zeng
- School of Space and Environment, Beihang University, Beijing, 100191, PR China
| | - Yu Qin
- School of Space and Environment, Beihang University, Beijing, 100191, PR China
| | - Xiang Li
- School of Space and Environment, Beihang University, Beijing, 100191, PR China.
| | - Tianle Zhu
- School of Space and Environment, Beihang University, Beijing, 100191, PR China
| | - Xiaolong Tang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Zulkifli AN, Zakeri HA, Azmi WA. Food Consumption, Developmental Time, and Protein Profile of the Digestive System of the Red Palm Weevil, Rhynchophorus ferrugineus (Coleptera: Dryophthoridae) Larvae Reared on Three Different Diets. J Insect Sci 2018; 18:5114619. [PMID: 30285257 PMCID: PMC6169988 DOI: 10.1093/jisesa/iey093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Indexed: 06/08/2023]
Abstract
The red palm weevil (RPW), Rhynchophorus ferrugineus Olivier (Coleoptera: Dryophthoridae) is one of the most dangerous pests of major cultivated palms including coconut, oil palm, and sago. The larval stage of the weevil causes the most destruction of the palms as it completely destroys the palm cabbage. In this study, the larvae were given three different diets-coconut cabbage, oil palm cabbage, and sago stem, under laboratory conditions for food consumption and developmental time experiment. The protein profiles of the digestive systems of the larvae fed on these three diets were also determined. Although the coconut diet was the most consumed by RPW larvae compared to oil palm and sago diets, the growth rate of RPW larvae on oil palm diet was however significantly shorter than those on the coconut and sago diets: the RPW only need 1 mo and 9 d to complete the larval duration. Proteins profiling of eight 2-DE gel protein spots that range 50-20 kDa were identified by mass spectrometry sequence analysis. Based on the Matrix Science Software, the most dominant protein was cationic trypsin. However, based on the NCBI BLAST tool, aminopeptidase N was the most dominant enzyme. This finding can lead to the development of pest control strategies based on the antinutritional protease inhibitors as potential biocontrol agents. Urgent action to find effective control methods should be taken seriously as this weevil is presumed to be one of the serious pests of oil palm industry in Malaysia.
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Affiliation(s)
- Ainatun Nadrah Zulkifli
- School of Marine and Environmental Sciences, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
| | - Hazlina Ahamad Zakeri
- School of Fundamental Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
| | - Wahizatul Afzan Azmi
- School of Marine and Environmental Sciences, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
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Oliveira-de-Lira L, Santos EMC, de Souza RF, Matos RJB, Silva MCD, Oliveira LDS, Nascimento TGD, Schemly PADLS, Souza SLD. Supplementation-Dependent Effects of Vegetable Oils with Varying Fatty Acid Compositions on Anthropometric and Biochemical Parameters in Obese Women. Nutrients 2018; 10:E932. [PMID: 30037019 PMCID: PMC6073593 DOI: 10.3390/nu10070932] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 07/16/2018] [Accepted: 07/18/2018] [Indexed: 11/16/2022] Open
Abstract
Fatty acid (FA) composition is a determinant of the physiological effects of dietary oils. This study investigated the effects of vegetable oil supplementation with different FA compositions on anthropometric and biochemical parameters in obese women on a hypocaloric diet with lifestyle modifications. Seventy-five women (body mass index, BMI, 30⁻39.9kg/m²) were randomized based on 8-week oil supplementation into four experimental groups: the coconut oil group (CoG, n = 18), the safflower oil group (SafG, n = 19), the chia oil group (ChG, n = 19), and the soybean oil placebo group (PG, n = 19). Pre- and post-supplementation weight, anthropometric parameters, and body fat (%BF), and lean mass percentages (%LM) were evaluated, along with biochemical parameters related to lipid and glycidemic profiles. In the anthropometric evaluation, the CoG showed greater weight loss (Δ% = -8.54 ± 2.38), and reduced BMI (absolute variation, Δabs = -2.86 ± 0.79), waist circumference (Δabs = -6.61 ± 0.85), waist-to-height ratio (Δabs = -0.041 ± 0.006), conicity index (Δabs = -0.03 ± 0.016), and %BF (Δabs = -2.78 ± 0.46), but increased %LM (Δabs = 2.61 ± 1.40) (p < 0.001). Moreover, the CoG showed a higher reduction in biochemical parameters of glycemia (Δabs = -24.71 ± 8.13) and glycated hemoglobin (Δabs = -0.86 ± 0.28) (p < 0.001). The ChG showed a higher reduction in cholesterol (Δabs = -45.36 ± 0.94), low-density lipoprotein cholesterol (LDLc; Δabs = -42.53 ± 22.65), and triglycerides (Δabs = -49.74 ± 26.3), but an increase in high-density lipoprotein cholesterol (HDLc; abs = 3.73 ± 1.24, p = 0.007). Coconut oil had a more pronounced effect on abdominal adiposity and glycidic profile, whereas chia oil had a higher effect on improving the lipid profile. Indeed, supplementation with different fatty acid compositions resulted in specific responses.
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Affiliation(s)
- Luciene Oliveira-de-Lira
- PostGraduate Program, Department of Nutrition, Federal University of Pernambuco, Pernambuco 50670-901, Brazil.
| | - Eduila Maria Couto Santos
- Academic Center of Vitoria de Santo Antão, Federal University of Pernambuco, Pernambuco 55608-680, Brazil.
| | - Raphael Fabrício de Souza
- Department of Physical Education, Federal University of Sergipe-UFS, São Cristovão, Sergipe 49100-000, Brazil.
| | - Rhowena Jane Barbosa Matos
- Academic Center of Vitoria de Santo Antão, Federal University of Pernambuco, Pernambuco 55608-680, Brazil.
| | - Matilde Cesiana da Silva
- Academic Center of Vitoria de Santo Antão, Federal University of Pernambuco, Pernambuco 55608-680, Brazil.
| | | | | | | | - Sandra Lopes de Souza
- PostGraduate Program, Department of Nutrition, Federal University of Pernambuco, Pernambuco 50670-901, Brazil.
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Zhao Z, Yu S, Li M, Gui X, Li P. Isolation of Exosome-Like Nanoparticles and Analysis of MicroRNAs Derived from Coconut Water Based on Small RNA High-Throughput Sequencing. J Agric Food Chem 2018; 66:2749-2757. [PMID: 29478310 DOI: 10.1021/acs.jafc.7b05614] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In this study, the presence of microRNAs in coconut water was identified by real-time polymerase chain reaction (PCR) based on the results of high-throughput small RNA sequencing. In addition, the differences in microRNA content between immature and mature coconut water were compared. A total of 47 known microRNAs belonging to 25 families and 14 new microRNAs were identified in coconut endosperm. Through analysis using a target gene prediction software, potential microRNA target genes were identified in the human genome. Real-time PCR showed that the level of most microRNAs was higher in mature coconut water than in immature coconut water. Then, exosome-like nanoparticles were isolated from coconut water. After ultracentrifugation, some particle structures were seen in coconut water samples using 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate fluorescence staining. Subsequent scanning electron microscopy observation and dynamic light scattering analysis also revealed some exosome-like nanoparticles in coconut water, and the mean diameters of the particles detected by the two methods were 13.16 and 59.72 nm, respectively. In conclusion, there are extracellular microRNAs in coconut water, and their levels are higher in mature coconut water than in immature coconut water. Some exosome-like nanoparticles were isolated from coconut water, and the diameter of these particles was smaller than that of animal-derived exosomes.
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Affiliation(s)
- Zhehao Zhao
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology , Tongji University , 1239 Siping Road , Shanghai 200092 , People's Republic of China
| | - Siran Yu
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology , Tongji University , 1239 Siping Road , Shanghai 200092 , People's Republic of China
| | - Min Li
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology , Tongji University , 1239 Siping Road , Shanghai 200092 , People's Republic of China
| | - Xin Gui
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology , Tongji University , 1239 Siping Road , Shanghai 200092 , People's Republic of China
| | - Ping Li
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology , Tongji University , 1239 Siping Road , Shanghai 200092 , People's Republic of China
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Khaw KT, Sharp SJ, Finikarides L, Afzal I, Lentjes M, Luben R, Forouhi NG. Randomised trial of coconut oil, olive oil or butter on blood lipids and other cardiovascular risk factors in healthy men and women. BMJ Open 2018; 8:e020167. [PMID: 29511019 PMCID: PMC5855206 DOI: 10.1136/bmjopen-2017-020167] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
INTRODUCTION High dietary saturated fat intake is associated with higher blood concentrations of low-density lipoprotein cholesterol (LDL-C), an established risk factor for coronary heart disease. However, there is increasing interest in whether various dietary oils or fats with different fatty acid profiles such as extra virgin coconut oil may have different metabolic effects but trials have reported inconsistent results. We aimed to compare changes in blood lipid profile, weight, fat distribution and metabolic markers after four weeks consumption of 50 g daily of one of three different dietary fats, extra virgin coconut oil, butter or extra virgin olive oil, in healthy men and women in the general population. DESIGN Randomised clinical trial conducted over June and July 2017. SETTING General community in Cambridgeshire, UK. PARTICIPANTS Volunteer adults were recruited by the British Broadcasting Corporation through their websites. Eligibility criteria were men and women aged 50-75 years, with no known history of cancer, cardiovascular disease or diabetes, not on lipid lowering medication, no contraindications to a high-fat diet and willingness to be randomised to consume one of the three dietary fats for 4 weeks. Of 160 individuals initially expressing an interest and assessed for eligibility, 96 were randomised to one of three interventions; 2 individuals subsequently withdrew and 94 men and women attended a baseline assessment. Their mean age was 60 years, 67% were women and 98% were European Caucasian. Of these, 91 men and women attended a follow-up assessment 4 weeks later. INTERVENTION Participants were randomised to extra virgin coconut oil, extra virgin olive oil or unsalted butter and asked to consume 50 g daily of one of these fats for 4 weeks, which they could incorporate into their usual diet or consume as a supplement. MAIN OUTCOMES AND MEASURES The primary outcome was change in serum LDL-C; secondary outcomes were change in total and high-density lipoprotein cholesterol (TC and HDL-C), TC/HDL-C ratio and non-HDL-C; change in weight, body mass index (BMI), waist circumference, per cent body fat, systolic and diastolic blood pressure, fasting plasma glucose and C reactive protein. RESULTS LDL-C concentrations were significantly increased on butter compared with coconut oil (+0.42, 95% CI 0.19 to 0.65 mmol/L, P<0.0001) and with olive oil (+0.38, 95% CI 0.16 to 0.60 mmol/L, P<0.0001), with no differences in change of LDL-C in coconut oil compared with olive oil (-0.04, 95% CI -0.27 to 0.19 mmol/L, P=0.74). Coconut oil significantly increased HDL-C compared with butter (+0.18, 95% CI 0.06 to 0.30 mmol/L) or olive oil (+0.16, 95% CI 0.03 to 0.28 mmol/L). Butter significantly increased TC/HDL-C ratio and non-HDL-C compared with coconut oil but coconut oil did not significantly differ from olive oil for TC/HDL-C and non-HDL-C. There were no significant differences in changes in weight, BMI, central adiposity, fasting blood glucose, systolic or diastolic blood pressure among any of the three intervention groups. CONCLUSIONS AND RELEVANCE Two different dietary fats (butter and coconut oil) which are predominantly saturated fats, appear to have different effects on blood lipids compared with olive oil, a predominantly monounsaturated fat with coconut oil more comparable to olive oil with respect to LDL-C. The effects of different dietary fats on lipid profiles, metabolic markers and health outcomes may vary not just according to the general classification of their main component fatty acids as saturated or unsaturated but possibly according to different profiles in individual fatty acids, processing methods as well as the foods in which they are consumed or dietary patterns. These findings do not alter current dietary recommendations to reduce saturated fat intake in general but highlight the need for further elucidation of the more nuanced relationships between different dietary fats and health. TRIAL REGISTRATION NUMBER NCT03105947; Results.
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Affiliation(s)
- Kay-Tee Khaw
- Department of Public Health and Primary Care, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Stephen J Sharp
- Medical Research Council Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Leila Finikarides
- BBC Television ‘Trust Me I’m a Doctor’, BBC Glasgow, Glasgow, UK
- Winton Centre for Evidence Communication, University of Cambridge, Cambridge, UK
| | - Islam Afzal
- Aston Medical Research Institute, Aston Medical School, Aston University, Birmingham, UK
| | - Marleen Lentjes
- Department of Public Health and Primary Care, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Robert Luben
- Department of Public Health and Primary Care, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Nita G Forouhi
- Medical Research Council Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, UK
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Monteiro MS, de Farias RF, Chaves JAP, Santana SA, Silva HAS, Bezerra CWB. Wood (Bagassa guianensis Aubl) and green coconut mesocarp (cocos nucifera) residues as textile dye removers (Remazol Red and Remazol Brilliant Violet). J Environ Manage 2017; 204:23-30. [PMID: 28846892 DOI: 10.1016/j.jenvman.2017.08.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 08/17/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
In this work the efficiency of two lignocellulosic waste materials, wood residues and coconut mesocarp, were investigated as adsorbents towards two representative textile dyes (Remazol Red, RR and Remazol Brilliant Violet, RBV). The moisture, carbohydrate, protein, lipid, ash and fiber contents of both natural matrices were characterized. The materials were also characterized by infrared spectroscopy, X-ray diffractometry, scanning electron microscopy, specific surface area analysis and thermogravimetry. The adsorption of dyes was monitored by using UV-Vis spectrophotometry. It was verified that both, coconut mesocarp (CM) and wood residues can act as effective adsorbents towards the investigated dyes. It is verified that the maximum adsorption capacity ΓM (mg g-1) for RBV and RR are 7.28 and 3.97 towards CM and 0.64 and 0.71 towrads SD. Furthermore, it was verified that the adsorption is strongly pH dependent and, as a general behavior, an increase in the pH value is associated with a decrease of the total amount of adsorbed dye. The adsorption of violet dye onto coconut mesocarp is well described by the Langmuir model, while all the remazol red fitted better with the Freundlich equation.
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Affiliation(s)
- Mônica S Monteiro
- Departamento de Química, Universidade Federal do Maranhão, Av. dos Portugueses s/n, 65080-040 São Luis, MA, Brazil
| | - Robson F de Farias
- Universidade Federal do Rio Grande do Norte, Cx. Postal 1664, 59078-970 Natal, RN, Brazil
| | - José Alberto Pestana Chaves
- Departamento de Química, Universidade Federal do Maranhão, Av. dos Portugueses s/n, 65080-040 São Luis, MA, Brazil
| | - Sirlane A Santana
- Departamento de Química, Universidade Federal do Maranhão, Av. dos Portugueses s/n, 65080-040 São Luis, MA, Brazil
| | - Hildo A S Silva
- Departamento de Química, Universidade Federal do Maranhão, Av. dos Portugueses s/n, 65080-040 São Luis, MA, Brazil
| | - Cícero W B Bezerra
- Departamento de Química, Universidade Federal do Maranhão, Av. dos Portugueses s/n, 65080-040 São Luis, MA, Brazil.
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Abstract
Increasing prevalence of obesity and metabolic syndrome warrants identification of potential therapeutic options for intervention. This study tested commercially available Virgin Coconut Oil and Coconut Nourish, as coconuts are rich sources of lauric and myristic acids. Male Wistar rats were fed either corn starch diet (C); high-carbohydrate, high-fat diet (H); high-carbohydrate, high-virgin coconut oil diet (HV); or high-carbohydrate, high-coconut Nourish diet (HN) for 16 weeks. Metabolic, liver, and cardiovascular health parameters were measured during and at the end of the study. Virgin coconut oil lowered body weight (C 386±8g, H 516±13g, HV 459±10g), blood glucose concentrations (C 4.2±0.1 mmol/L, H 5.4±0.2 mmol/L, HV 4.6±0.2 mmol/L), systolic blood pressure (C 127±5mmHg, H 149±4mmHg, HV 133±3mmHg,) and diastolic stiffness (C 25.0±1.7, H 31.4±1.2, HV 25.2±2.3,) with improved structure and function of the heart and liver. Coconut Nourish increased total body lean mass (C 255±10g, H 270±16g, HN 303±15g) and lowered plasma total cholesterol concentrations (C 1.6±0.2 mmol/L, H 1.7±0.1 mmol/L, HN 1.0±0.0 mmol/L), systolic blood pressure (C 127±5mmHg, H 149±4mmHg, HN 130±3mmHg) and diastolic stiffness (C 25.0±1.7, H 31.4±1.2, HN 26.5±1.0), improved structure and function of the heart and liver but increased plasma concentrations of triglycerides (C 0.3±0.1 mmol/L, H 1.1±0.4 mmol/L, HN 1.8±0.2 mmol/L) and non-esterified fatty acids (C 1.2±0.3 mmol/L, H 3.3±0.8 mmol/L, HN 5.6±0.4 mmol/L). Thus, the fiber and protein in coconut Nourish and the medium-chain saturated fatty acids in virgin coconut oil may improve cardiovascular and liver complications in obesity.
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Affiliation(s)
- Sunil K Panchal
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, QLD, Toowoomba, 4350, Australia.
| | - Sharyn Carnahan
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, QLD, Toowoomba, 4350, Australia
- School of Health and Wellbeing, Faculty of Health, Engineering and Sciences, University of Southern Queensland, Toowoomba, 4350, Australia
| | - Lindsay Brown
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, QLD, Toowoomba, 4350, Australia
- School of Health and Wellbeing, Faculty of Health, Engineering and Sciences, University of Southern Queensland, Toowoomba, 4350, Australia
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