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Li Z, Lin L, Fu G, Guo Z, Zhang C. Insight on the emulsifying mechanisms of low-salt type emulsions stabilized by Maillard conjugates: Myofibrillar protein peptide-dextrin with different degrees of hydrolysis. Food Chem 2024; 433:137151. [PMID: 37661502 DOI: 10.1016/j.foodchem.2023.137151] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 08/01/2023] [Accepted: 08/11/2023] [Indexed: 09/05/2023]
Abstract
In this study, we investigated the emulsifying properties and stabilisation mechanisms of low-salt type emulsions stabilised by MP-base conjugates prepared via the Maillard reaction between DX and MP peptides (MPP). Mild hydrolysis by Alcalase promoted a well-controlled Maillard reaction in dry conditions. Combining hydrolysis and Maillard reaction caused the dissociation and unfolding of highly aggregated MP structures; the ordered secondary structure was lost and the hydrophobic residue was exposed. The MPP-DX conjugates greatly improved the emulsifying ability and stability in the low-salt system; the resulting emulsion exhibited a small droplet size and homogeneous microstructure with desirable storage stability. Further, the glycation products were found to effectively suppress gravity-induced creaming. The MPP-DX glycoconjugate developed with 5% DG, exhibiting strongest flocculation and creaming stability, was determined as the optimal emulsifying agent for low-salt type emulsions. These findings provide a theoretical basis for developing low-salt meat products and/or emulsion-based foods.
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Affiliation(s)
- Zhiyu Li
- Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Lin Lin
- Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Gaofeng Fu
- Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zebin Guo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Chen Zhang
- Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China.
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2
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Nunta R, Khemacheewakul J, Techapun C, Sommanee S, Feng J, Htike SL, Mahakuntha C, Porninta K, Phimolsiripol Y, Jantanasakulwong K, Moukamnerd C, Watanabe M, Kumar A, Leksawasdi N. Kinetics of Phosphate Ions and Phytase Activity Production for Lactic Acid-Producing Bacteria Utilizing Milling and Whitening Stages Rice Bran as Biopolymer Substrates. Biomolecules 2023; 13:1770. [PMID: 38136641 PMCID: PMC10741578 DOI: 10.3390/biom13121770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
A study evaluated nine kinetic data and four kinetic parameters related to growth, production of various phytase activities (PEact), and released phosphate ion concentration ([Pi]) from five lactic acid bacteria (LAB) strains cultivated in three types of media: phytate (IP6), milling stage rice bran (MsRB), and whitening stage rice bran (WsRB). Score ranking techniques were used, combining these kinetic data and parameters to select the most suitable LAB strain for each medium across three cultivation time periods (24, 48, and 72 h). In the IP6 medium, Lacticaseibacillus casei TISTR 1500 exhibited statistically significant highest (p ≤ 0.05) normalized summation scores using a 2:1 weighting between kinetic and parameter data sets. This strain also had the statistically highest levels (p ≤ 0.05) of produced phosphate ion concentration ([Pi]) (0.55 g/L) at 72 h and produced extracellular specific phytase activity (ExSp-PEact) (0.278 U/mgprotein) at 48 h. For the MsRB and WsRB media, Lactiplantibacillus plantarum TISTR 877 performed exceptionally well after 72 h of cultivation. It produced ([Pi], ExSp-PEact) pairs of (0.53 g/L, 0.0790 U/mgprotein) in MsRB and (0.85 g/L, 0.0593 U/mgprotein) in WsRB, respectively. Overall, these findings indicate the most promising LAB strains for each medium and cultivation time based on their ability to produce phosphate ions and extracellular specific phytase activity. The selection process utilized a combination of kinetic data and parameter analysis.
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Affiliation(s)
- Rojarej Nunta
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Division of Food Innovation and Business, Faculty of Agricultural Technology, Lampang Rajabhat University, Lampang 52100, Thailand
| | - Julaluk Khemacheewakul
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Charin Techapun
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Sumeth Sommanee
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Juan Feng
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Su Lwin Htike
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Chatchadaporn Mahakuntha
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Kritsadaporn Porninta
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Yuthana Phimolsiripol
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Kittisak Jantanasakulwong
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
| | | | - Masanori Watanabe
- Graduate School of Agriculture, Yamagata University, 1-23 Wakada-Machi, Tsuruoka, Yamagata 997-8555, Japan;
| | - Anbarasu Kumar
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
- Department of Biotechnology, Periyar Maniammai Institute of Science & Technology (Deemed to be University), Thanjavur 613403, India
| | - Noppol Leksawasdi
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG) & Bioprocess Research Cluster (BRC), School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (R.N.); (J.K.); (S.S.); (J.F.); (S.L.H.); (C.M.); (K.P.); (Y.P.); (K.J.)
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
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3
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Ahmed ME, Hammam ARA, Ali AE, Alsaleem KA, Elfaruk MS, Kamel DG, Moneeb AHM. Measurement of carbohydrates and organic acids in varieties of cheese using high-performance liquid chromatography. Food Sci Nutr 2023; 11:2081-2085. [PMID: 37181312 PMCID: PMC10171539 DOI: 10.1002/fsn3.2438] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/19/2021] [Accepted: 02/20/2021] [Indexed: 05/16/2023] Open
Abstract
Lactose is converted to lactic acid through fermentation and ripening of cheese using starter cultures. The content of lactic acid and organic acids formed during storage of cheese is different based on the type of starter cultures, pH, processing, and storage conditions. The objective of this study was to determine the carbohydrates and organic acids of four different commercial cheese samples (Parmesan, Mozzarella, Swiss, and Cheddar cheese) using high-performance liquid chromatography (HPLC). The lactose content in Cheddar cheese was significantly high (p < .05) as compared to Parmesan cheese while Mozzarella and Swiss cheese did not have lactose. However, galactose was low in Swiss cheese as compared to other cheese types, while glucose did not detect in all cheese samples. Organic acids such as citric, succinic, lactic, and butanoic acids were high in Parmesan cheese relative to other cheese types. Additionally, pyruvic and propanoic acids were high (p < .05) in Swiss cheese while acetic and orotic acids were elevated (p < .05) in Mozzarella cheese relative to other types of cheese.
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Affiliation(s)
- Mahmoud E. Ahmed
- Dairy Science DepartmentFaculty of AgricultureAssiut UniversityAssiutEgypt
| | - Ahmed R. A. Hammam
- Dairy Science DepartmentFaculty of AgricultureAssiut UniversityAssiutEgypt
- Dairy and Food Science DepartmentSouth Dakota State UniversityBrookingsSDUSA
| | - Abd El‐Fatah Ali
- Department of Food Science and TechnologyFaculty of AgricultureAssiut UniversityAssiutEgypt
| | - Khalid A. Alsaleem
- Dairy and Food Science DepartmentSouth Dakota State UniversityBrookingsSDUSA
- Department of Food Science and Human NutritionCollege of Agriculture and Veterinary MedicineQassim UniversityBuraydahSaudi Arabia
| | - Mohamed Salem Elfaruk
- Dairy and Food Science DepartmentSouth Dakota State UniversityBrookingsSDUSA
- Medical Technology CollegeNalut UniversityNalutLibya
| | - Dalia G. Kamel
- Dairy Science DepartmentFaculty of AgricultureAssiut UniversityAssiutEgypt
| | - Asmaa H. M. Moneeb
- Dairy Science DepartmentFaculty of AgricultureAssiut UniversityAssiutEgypt
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4
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HILIC-UV determination of lysine and chloride counterions in active pharmaceutical ingredients. J Pharm Biomed Anal 2023; 226:115245. [PMID: 36641963 DOI: 10.1016/j.jpba.2023.115245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/10/2023] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
A rapid, robust, and routinely applicable HILIC based HPLC-UV assay was developed for the quantitative determination of the L-Lysine content of Atorvastatin lysine active substance. During the method validation it turned out that with UV detection at 200 nm, the method is also capable for the direct determination of chloride ions. To the best of our knowledge, the phenomenon of chloride determination by short wavelength UV detection had only been once highlighted earlier in the literature. A wide range of the potential applications are demonstrated as well as the validation of the method as a routinely usable assay for residual chloride determination is also given.
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5
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Saengsen C, Sookbampen O, Wu S, Seetasang S, Rongwong W, Chuaboon L. The potency of HPLC-DAD and LC-MS/MS combined with ion chromatography for detection/purification of levulinic acid and bio-compounds from acid hydrolysis of OPEFB. RSC Adv 2022; 12:28638-28646. [PMID: 36320499 PMCID: PMC9539635 DOI: 10.1039/d2ra03563d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 09/21/2022] [Indexed: 11/05/2022] Open
Abstract
This work reports a new strategy for the detection and purification of levulinic acid (LA) and bio-compounds from the acid hydrolysis and enzymatic treatment of oil palm empty fruit bunch (OPEFB) through high-performance liquid chromatography (HPLC) techniques combined with ion/ligand chromatography. The detections of LA, biomass-saccharides, hydroxymethylfurfural (HMF), and furfural were successfully elucidated by optimizing the multiple reaction monitoring mode (MRM) and liquid chromatography conditions using a Pb2+ ligand exchange column in the liquid chromatography with tandem mass spectrometry (LC-MS/MS) approach. High-performance liquid chromatography with diode-array detection (HPLC-DAD) combined with an H+ ion exchange column also showed potency for detecting chromophoric compounds such as LA, HMF, furfural, and acid (by-products) but not biomass-saccharides. Both techniques showed acceptable validation in terms of linearity, limit of detection (LOD), limit of quantitation (LOQ), accuracy, precision, and stability in both quantitative and qualitative analysis. However, the LC-MS/MS approach showed higher sensitivity for detecting LA and HMF compared with HPLC-DAD. Samples comprised of cellobiose, glucose, HMF, and LA from the acid hydrolysis of cellulose to LA with a mineral acid, and the biocatalysis of cellulase and β-glucosidase catalyzed cellulose (from OPEFB) to glucose were successfully monitored through the LC-MS/MS approach. In addition, using the optimal HPLC conditions obtained from LC-MS/MS, the purification of LA from other substances obtained from the hydrolysis reaction of cellulose (5 g) was successfully demonstrated by HPLC-DAD equipped with a fraction collector combined with an H+ ion exchange column at gram-scale of 1 g LA with a purification rate of 0.63 g ml−1 min−1. The analytical approach for detection and purification levulinic acid from and bio-compound in hydrolysis biomass.![]()
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Affiliation(s)
- Chatcha Saengsen
- Biomass and Oil Palm Center of Excellent, Walailak UniversityNakhon Si Thammarat80160Thailand
| | - Orawan Sookbampen
- Biomass and Oil Palm Center of Excellent, Walailak UniversityNakhon Si Thammarat80160Thailand
| | - Shuke Wu
- College of Life Science and Technology, Huazhong Agricultural UniversityWuhan430070China
| | - Sasikarn Seetasang
- National Nanotechnology Center (NANOTEC), National Science and Technology Development AgencyKhlong LuangPathum Thani 12120Thailand
| | - Wichitpan Rongwong
- Biomass and Oil Palm Center of Excellent, Walailak UniversityNakhon Si Thammarat80160Thailand,School of Engineering and Technology, Walailak UniversityNakhon Si Thammarat80160Thailand
| | - Litavadee Chuaboon
- Biomass and Oil Palm Center of Excellent, Walailak UniversityNakhon Si Thammarat80160Thailand,School of Pharmacy, Walailak UniversityNakhon Si Thammarat80160Thailand
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6
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Kurzyna-Szklarek M, Cybulska J, Zdunek A. Analysis of the chemical composition of natural carbohydrates - An overview of methods. Food Chem 2022; 394:133466. [PMID: 35716502 DOI: 10.1016/j.foodchem.2022.133466] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/13/2022] [Accepted: 06/09/2022] [Indexed: 11/19/2022]
Abstract
Natural carbohydrates are gaining importance over a wide spectrum of human activity due to their versatile functionalities. The properties of carbohydrates are currently used in many branches of industry and new possibilities of their utilization, like in medicine or materials science, are demonstrated systematically. The attractive properties of carbohydrates result from their chemical structure and ability to form macromolecules and derivatives. Each application of carbohydrate requires a knowledge of their chemical composition, which due to the number and differentiation of monosaccharides and their spatial forms is often challenging. This review presents an overview on sample preparation and the methods used for the determination of the fine chemical structure of natural carbohydrates. Most popular and reliable colorimetric, chromatographic and spectroscopic methods are presented with an emphasis on their pros and cons.
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Affiliation(s)
| | - Justyna Cybulska
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland.
| | - Artur Zdunek
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
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7
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Bomkamp C, Skaalure SC, Fernando GF, Ben‐Arye T, Swartz EW, Specht EA. Scaffolding Biomaterials for 3D Cultivated Meat: Prospects and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102908. [PMID: 34786874 PMCID: PMC8787436 DOI: 10.1002/advs.202102908] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/12/2021] [Indexed: 05/03/2023]
Abstract
Cultivating meat from stem cells rather than by raising animals is a promising solution to concerns about the negative externalities of meat production. For cultivated meat to fully mimic conventional meat's organoleptic and nutritional properties, innovations in scaffolding technology are required. Many scaffolding technologies are already developed for use in biomedical tissue engineering. However, cultivated meat production comes with a unique set of constraints related to the scale and cost of production as well as the necessary attributes of the final product, such as texture and food safety. This review discusses the properties of vertebrate skeletal muscle that will need to be replicated in a successful product and the current state of scaffolding innovation within the cultivated meat industry, highlighting promising scaffold materials and techniques that can be applied to cultivated meat development. Recommendations are provided for future research into scaffolds capable of supporting the growth of high-quality meat while minimizing production costs. Although the development of appropriate scaffolds for cultivated meat is challenging, it is also tractable and provides novel opportunities to customize meat properties.
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Affiliation(s)
- Claire Bomkamp
- The Good Food Institute1380 Monroe St. NW #229WashingtonDC20010USA
| | | | | | - Tom Ben‐Arye
- The Good Food Institute1380 Monroe St. NW #229WashingtonDC20010USA
| | - Elliot W. Swartz
- The Good Food Institute1380 Monroe St. NW #229WashingtonDC20010USA
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Paredes JL, Escudero-Gilete ML, Vicario IM. A new functional kefir fermented beverage obtained from fruit and vegetable juice: Development and characterization. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112728] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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9
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Introducing a Marine Biorefinery System for the Integrated Production of Biofuels, High-Value-Chemicals, and Co-Products: A Path Forward to a Sustainable Future. Processes (Basel) 2021. [DOI: 10.3390/pr9101841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Biofuels have many environmental and practical benefits as a transportation fuel. They are among the best alternatives to fossil fuels- thanks to their capacity for negative carbon emissions, which is vital for archiving the global ambition of a net-zero economy. However, conventional biofuel production takes place on inland sites and relies on freshwater and edible crops (or land suitable for edible crop production), which has led to the food versus fuel debate. It also suffers technical and economical barriers owing to the energy balance and the cost of production compared with fossil fuels. Establishing a coastal integrated marine biorefinery (CIMB) system for the simultaneous production of biofuels, high-value chemicals, and other co-products could be the ultimate solution. The proposed system is based on coastal sites and relies entirely on marine resources including seawater, marine biomass (seaweed), and marine microorganisms (marine yeasts and marine microalgae). The system does not require the use of arable land and freshwater in any part of the production chain and should be linked to offshore renewable energy sources to increase its economic feasibility and environmental value. This article aims to introduce the CIMB system as a potential vehicle for addressing the global warming issue and speeding the global effort on climate change mitigation as well as supporting the world’s water, food and energy security. I hope these perspectives serve to draw attention into research funding for this approach.
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10
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Comparison between Mid-Infrared (ATR-FTIR) Spectroscopy and Official Analysis Methods for Determination of the Concentrations of Alcohol, SO2, and Total Acids in Wine. SEPARATIONS 2021. [DOI: 10.3390/separations8100191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The determination of alcohol, SO2, and total acids in wine through conventional laboratory techniques have some limitations related to the amount of the samples, analytical preparation of laboratory staff, and time to carry out the analysis. In recent years, spectroscopic and chromatographic methods have been proposed to determinate simultaneously multiple analytical parameters. The new methods claim the speed of analysis and easy execution. However, they need a validation process that guarantees the reliability of the results to be used in official determinations. This study aimed to evaluate the usefulness of FT-infrared reflectance (FT-IR) to quantify total acid, alcohol, and SO2 concentration in the wines. For this purpose, 156 DOC Italian wines were tested with IR technology, and results were compared to those obtained by official analysis methods. The comparison was performed using two non-parametric statistical methods: the Bland & Altman test and Passing & Bablok regression. Our results showed that the spectrophotometric methods make errors due to interfering contaminants in the sample that can be corrected by blank determination. Therefore, the spectrophotometric methods that use the infrared region of the electromagnetic spectrum can be used by the wine industry and regulators for the wine routine as an alternative to official methodologies.
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11
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Faccia M, Natrella G, Gambacorta G. Analysis of the water‐soluble compounds as a tool for discriminating traditional and industrial high moisture mozzarella made with citric acid. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15091] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michele Faccia
- Department of Soil, Plant and Food Sciences University of Bari Via Amendola 165/A Bari 70126 Italy
| | - Giuseppe Natrella
- Department of Soil, Plant and Food Sciences University of Bari Via Amendola 165/A Bari 70126 Italy
| | - Giuseppe Gambacorta
- Department of Soil, Plant and Food Sciences University of Bari Via Amendola 165/A Bari 70126 Italy
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12
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A Preliminary Life Cycle Analysis of Bioethanol Production Using Seawater in a Coastal Biorefinery Setting. Processes (Basel) 2021. [DOI: 10.3390/pr9081399] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bioethanol has many environmental and practical benefits as a transportation fuel. It is one of the best alternatives to replace fossil fuels due to its liquid nature, which is similar to the gasoline and diesel fuels traditionally used in transportation. In addition, bioethanol production technology has the capacity for negative carbon emissions, which is vital for solving the current global warming dilemma. However, conventional bioethanol production takes place based on an inland site and relies on freshwater and edible crops (or land suitable for edible crop production) for production, which has led to the food vs. fuel debate. Establishing a coastal marine biorefinery (CMB) system for bioethanol production that is based on coastal sites and relies on marine resources (seawater, marine biomass and marine yeast) could be the ultimate solution. In this paper, we aim to evaluate the environmental impact of using seawater for bioethanol production at coastal locations as a step toward the evaluation of a CMB system. Hence, a life cycle assessment for bioethanol production was conducted using the proposed scenario, named Coastal Seawater, and compared to the conventional scenario, named Inland Freshwater (IF). The impact of each scenario in relation to climate change, water depletion, land use and fossil depletion was studied for comparison. The Coastal Seawater scenario demonstrated an improvement upon the conventional scenario in all the selected impact categories. In particular, the use of seawater in the process had a significant effect on water depletion, showing an impact reduction of 31.2%. Furthermore, reductions were demonstrated in natural land transformation, climate change and fossil depletion of 5.5%, 3.5% and 4.2%, respectively. This indicates the positive impact of using seawater and coastal locations for bioethanol production and encourages research to investigate the CMB system.
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13
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Long-Term Cultivation of a Native Arthrospira platensis (Spirulina) Strain in Pozo Izquierdo (Gran Canaria, Spain): Technical Evidence for a Viable Production of Food-Grade Biomass. Processes (Basel) 2021. [DOI: 10.3390/pr9081333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Microalgae cultivation is a promising alternative to traditional agriculture in arid—semi-arid areas. The aim of this study is to assess the viability of long-term cultivation of native Arthrospira platensis in Gran Canaria. Maximum culture productivity (0.08 g/L/day) and optimal concentration range (0.6–0.9 g/L) were firstly determined in 8000 L raceway under a greenhouse. Afterwards, a stable productivity of 0.06 g/L/day (6.0 g/m2/day) was obtained by reusing the culture medium during 26 days of cultivation, with consistent biomass biochemical composition. Outdoor temperature and daily solar irradiation ranged between 17.9–30.7 °C and 79.2–274.8 W/m2, while culture pH and salinity were in the range 9.42–10.77 and 11.2–14.9 g/L, respectively. Protein (>60%), potassium (1.8 g/100 g) and C-phycocyanin (7.2%) content is in the high-range of commercial Spirulina, which makes BEA 1257B promising for food and extraction of natural pigments/antioxidants. The dried biomass complies with international standards for human consumption, because of low heavy metal content and no pathogens presence. Product quality can be improved by reducing ash (≃12%) and sodium (1.5%) content through biomass washing optimization and/or further dewatering step. Other microorganisms can be prevented by high alkaline conditions and mild chemical treatments. These results pave the way for a sustainable microalgae-based blue bioeconomy in the Canary Islands.
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Souza BCD, Bossardi FF, Furlan GR, Folle AB, Reginatto C, Polidoro TA, Carra S, Silveira MMD, Malvessi E. Validated High-Performance Liquid Chromatographic (HPLC) Method for the Simultaneous Quantification of 2,3-Butanediol, Glycerol, Acetoin, Ethanol, and Phosphate in Microbial Cultivations. ANAL LETT 2021. [DOI: 10.1080/00032719.2020.1869754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Bruna Campos de Souza
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Flávia Frozza Bossardi
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Greice Ribeiro Furlan
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Analia Borges Folle
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Caroline Reginatto
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Tomás Augusto Polidoro
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Sabrina Carra
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Mauricio Moura da Silveira
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Eloane Malvessi
- Instituto de Biotecnologia, Laboratório de Bioprocessos, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
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Cardoso PC, Sviech F, Reis MFA, Iglesias AH, Oliveira RA, Ubbink J, Reyes FGR, Prata AS. Development and application of a liquid chromatography-mass spectrometry method for the determination of sugars and organics acids in araza, ceriguela, guava, mango and pitanga. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2021. [DOI: 10.1590/1981-6723.16920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract The intrinsic characteristics of many tropical fruits cause high post-harvest losses and prevent their commercialization as fresh fruits. Information about their composition is crucial for defining processing conditions and identifying opportunities for product development. However, the analytical methods generally used to quantify sugars and organic acids are costly and time-consuming. Simultaneous analysis by Liquid Chromatography-Electrospray Ionization-Mass Spectrometry (LC-ESI-MS/MS) is a very sensitive and reproducible technique, allowing for accurate simultaneous multi-analyte quantitation in complex systems. Thus, a LC-ESI-MS/MS Multiple Reaction Monitoring (MRM) method was developed using reverse phase column for detecting and quantifying sugars and some organic acids in only 4 min, in selected fruits as following: araza (Psidium cattleianum L.), ciriguela (Spondias purpurea L.), mango (Mangifera indicaL.), guava (Psidium guajava L.) and pitanga (Eugenia uniflora L.). All fruits had a similar concentration of glucose and fructose, except for pitanga that presented higher values of both. The content of citric, malic and tartaric acids was quantitated; some fruits stood out by their high content of organic acids, for instance, araza was rich in citric acid. The newly generated data on the composition of tropical fruits allowed establishing a correlation between the carbohydrate content and the physical properties of the fruit pulps, assist in product development.
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Chuensun T, Chewonarin T, Laopajon W, Kawee‐ai A, Pinpart P, Utama‐ang N. Comparative evaluation of physicochemical properties of Lingzhi (
Ganoderma lucidum
) as affected by drying conditions and extraction methods. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14906] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Treethip Chuensun
- Division of Product Development Technology Agro‐IndustryChiang Mai University 155 moo 2 Mae‐hea Chiang Mai Thailand
| | - Teera Chewonarin
- Department of Biochemistry, Medicine Chiang Mai University 110 Meang Chiang Mai Thailand
| | - Witida Laopajon
- Department of Medical Technology Associated Medical Sciences Chiang Mai University 110 SriMeang Chiang Mai Thailand
| | - Arthitaya Kawee‐ai
- Division of Product Development Technology Agro‐IndustryChiang Mai University 155 moo 2 Mae‐hea Chiang Mai Thailand
| | - Ponjan Pinpart
- Division of Product Development Technology Agro‐IndustryChiang Mai University 155 moo 2 Mae‐hea Chiang Mai Thailand
| | - Niramon Utama‐ang
- Division of Product Development Technology Agro‐IndustryChiang Mai University 155 moo 2 Mae‐hea Chiang Mai Thailand
- Cluster of High Value Product from Thai rice and Plant for Health Chiang Mai University 239 Suthep, Meang Chiang Mai Thailand
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Simultaneous Determination of 13 Organic Acids in Liquid Culture Media of Edible Fungi Using High-Performance Liquid Chromatography. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2817979. [PMID: 32802838 PMCID: PMC7415114 DOI: 10.1155/2020/2817979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/15/2020] [Accepted: 07/10/2020] [Indexed: 11/17/2022]
Abstract
The study aimed at detecting 13 organic acids (oxalic acid, maleic acid, citric acid, tartaric acid, malic acid, quinic acid, succinic acid, fumaric acid, formic acid, acetic acid, propionic acid, isobutyric acid, and butyric acid) by establishing a high-performance liquid chromatography (HPLC). The analysis was performed using two sugar columns, i.e., SH1011 column and KC-811 column. The optimal conditions were as follows: 4 mmol/L HClO4 solution as the eluent with UV-visible detector (210 nm), a flow rate of 1 mL/min at the temperature of 60°C, and the injection volume at 10 μL. The results showed that all the calibration curves had excellent linearity (R 2 > 0.9991) within the test ranges. The RSD values of the thirteen analytes were lower than 2.94% at three levels, the recoveries were 91.9%-102.0%, the limit of detection (LOD) was between 0.05 and 10.63 μg/mL, and the quantification (LOQ) was between 0.10 and 19.53 μg/mL. Finally, the proposed methodology was successfully applied for the analysis of organic acids in the culture medium of edible fungi. In conclusion, the study findings proved that the method was sensitive, accurate, reproducible, and could be readily applied to analyze the organic acids in the samples.
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18
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Microalgae cultivation in thin stillage anaerobic digestate for nutrient recovery and bioproduct production. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101867] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Synergistic coupling of NiCo2O4 nanorods onto porous Co3O4 nanosheet surface for tri-functional glucose, hydrogen-peroxide sensors and supercapacitor. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135326] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Sengupta S, Deb M, Nath R, Prasad Saha S, Bhattacharjee A. Optimization of Ethanol Production using Nitrosative Stress Exposed S.cerevisiae. Cell Biochem Biophys 2019; 78:101-110. [PMID: 31875278 DOI: 10.1007/s12013-019-00897-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 12/12/2019] [Indexed: 11/28/2022]
Abstract
S.cerevisiae is an industrially important organism known for its ability to produce ethanol as the demand for ethanol is increasing day by day all over the world, the need to find better and alternative ways to increase ethanol production is also rising. In this work we have proposed such alternative but effective method for producing ethanol by S.cerevisiae. Here, we are reporting for the first time the effect of nitrosative stress on ethanol production. Under in vivo condition, nitrosative stress is marked by the modification of macromolecules in the presence of reactive nitrogen species (RNS). Our result showed that treated cells were more capable for ethanol production compared with untreated cells. Our result also showed enhanced alcohol dehydrogenase activity under stressed condition. Further ethanol production was also optimized by using Response Surface Methodology (RSM) with stressed cells. Further, production of ethanol with immobilized beads of stress affected Saccharomyces cerevisiae was also determined. Overall, the obtained data showed that under nitrosative stress, the maximum ethanol production is 34.4 g/l after 24 h and such higher production was observed even after several cycles of fermentation. This is the first report of this kind showing the relation between nitrosative stress and ethanol production in Saccharomyces cerevisiae which may have important industrial application.
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Affiliation(s)
- Swarnab Sengupta
- Department of Microbiology, University of North Bengal, Siliguri, India
| | - Minakshi Deb
- Department of Microbiology, University of North Bengal, Siliguri, India
| | - Rohan Nath
- Department of Microbiology, University of North Bengal, Siliguri, India
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Nuryana I, Andriani A, Lisdiyanti P, Yopi. Analysis of organic acids produced by lactic acid bacteria. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1755-1315/251/1/012054] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Cortés-Herrera C, Artavia G, Leiva A, Granados-Chinchilla F. Liquid Chromatography Analysis of Common Nutritional Components, in Feed and Food. Foods 2018; 8:E1. [PMID: 30577557 PMCID: PMC6352167 DOI: 10.3390/foods8010001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/28/2018] [Accepted: 11/05/2018] [Indexed: 12/20/2022] Open
Abstract
Food and feed laboratories share several similarities when facing the implementation of liquid-chromatographic analysis. Using the experience acquired over the years, through application chemistry in food and feed research, selected analytes of relevance for both areas were discussed. This review focused on the common obstacles and peculiarities that each analyte offers (during the sample treatment or the chromatographic separation) throughout the implementation of said methods. A brief description of the techniques which we considered to be more pertinent, commonly used to assay such analytes is provided, including approaches using commonly available detectors (especially in starter labs) as well as mass detection. This manuscript consists of three sections: feed analysis (as the start of the food chain); food destined for human consumption determinations (the end of the food chain); and finally, assays shared by either matrices or laboratories. Analytes discussed consist of both those considered undesirable substances, contaminants, additives, and those related to nutritional quality. Our review is comprised of the examination of polyphenols, capsaicinoids, theobromine and caffeine, cholesterol, mycotoxins, antibiotics, amino acids, triphenylmethane dyes, nitrates/nitrites, ethanol soluble carbohydrates/sugars, organic acids, carotenoids, hydro and liposoluble vitamins. All analytes are currently assayed in our laboratories.
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Affiliation(s)
- Carolina Cortés-Herrera
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Universidad de Costa Rica, Ciudad Universitaria Rodrigo Facio 11501-2060, Costa Rica.
| | - Graciela Artavia
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Universidad de Costa Rica, Ciudad Universitaria Rodrigo Facio 11501-2060, Costa Rica.
| | - Astrid Leiva
- Centro de Investigación en Nutrición Animal, Universidad de Costa Rica, Ciudad Universitaria Rodrigo 11501-2060, Costa Rica.
| | - Fabio Granados-Chinchilla
- Centro de Investigación en Nutrición Animal, Universidad de Costa Rica, Ciudad Universitaria Rodrigo 11501-2060, Costa Rica.
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Hu L, Yin C, Ma S, Liu Z. Rapid detection of three quality parameters and classification of wine based on Vis-NIR spectroscopy with wavelength selection by ACO and CARS algorithms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 205:574-581. [PMID: 30075438 DOI: 10.1016/j.saa.2018.07.054] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/16/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
The feasibility of rapid detection of three quality parameters and classification of wines based on visible and near infrared spectroscopy (Vis-NIRs) was investigated. A modified ant colony optimization (ACO) algorithm for wavelength selection in Vis-NIR spectral analysis was proposed to improve the prediction performance of partial least squares regression (PLSR) model. The result proved that feature wavelengths/variables can be selected by the proposed method for building a high performance PLSR model. The root mean square error of total acid, total sugar and alcohol obtained by ACO-PLS were 0.00122 mol/l, 0.0893 g/l and 0.206 (v/v), respectively. Their correlation coefficients obtained by ACO-PLS reach to 0.973, 0.994 and 0.928, respectively. Compared with full-spectral PLS and PLS based on competitive adaptive reweighted sampling (CARS-PLS) method, the application of ACO wavelength selection provided a notably improved regression model. The prediction results were significantly better than the full-spectral PLS model and slightly better than the CARS-PLS method. Meanwhile, a classification study was also constructed based on the ACO-Principal component analysis (ACO-PCA) model showed that Vis-NIR spectra could be used to classify wines according to the geographical origins. Therefore, it can be concluded that the Vis-NIR spectroscopy technique based on ACO wavelength selection has high potential to differentiate the wine origins and predict the quality parameters in a nondestructive way.
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Affiliation(s)
- Leqian Hu
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Chunling Yin
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Shuai Ma
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Zhimin Liu
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
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The establishment of a marine focused biorefinery for bioethanol production using seawater and a novel marine yeast strain. Sci Rep 2018; 8:12127. [PMID: 30108287 PMCID: PMC6092365 DOI: 10.1038/s41598-018-30660-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/26/2018] [Indexed: 01/04/2023] Open
Abstract
Current technologies for bioethanol production rely on the use of freshwater for preparing the fermentation media and use yeasts of a terrestrial origin. Life cycle assessment has suggested that between 1,388 to 9,812 litres of freshwater are consumed for every litre of bioethanol produced. Hence, bioethanol is considered a product with a high-water footprint. This paper investigated the use of seawater-based media and a novel marine yeast strain ‘Saccharomyces cerevisiae AZ65’ to reduce the water footprint of bioethanol. Results revealed that S. cerevisiae AZ65 had a significantly higher osmotic tolerance when compared with the terrestrial reference strain. Using 15-L bioreactors, S. cerevisiae AZ65 produced 93.50 g/L ethanol with a yield of 83.33% (of the theoretical yield) and a maximum productivity of 2.49 g/L/h when using seawater-YPD media. This approach was successfully applied using an industrial fermentation substrate (sugarcane molasses). S. cerevisiae AZ65 produced 52.23 g/L ethanol using molasses media prepared in seawater with a yield of 73.80% (of the theoretical yield) and a maximum productivity of 1.43 g/L/h. These results demonstrated that seawater can substitute freshwater for bioethanol production without compromising production efficiency. Results also revealed that marine yeast is a potential candidate for use in the bioethanol industry especially when using seawater or high salt based fermentation media.
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Redivo L, Stredanský M, De Angelis E, Navarini L, Resmini M, Švorc Ĺ. Bare carbon electrodes as simple and efficient sensors for the quantification of caffeine in commercial beverages. ROYAL SOCIETY OPEN SCIENCE 2018; 5:172146. [PMID: 29892400 PMCID: PMC5990824 DOI: 10.1098/rsos.172146] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
Food quality control is a mandatory task in the food industry and relies on the availability of simple, cost-effective and stable sensing platforms. In the present work, the applicability of bare glassy carbon electrodes for routine analysis of food samples was evaluated as a valid alternative to chromatographic techniques, using caffeine as test analyte. A number of experimental parameters were optimized and a differential pulse voltammetry was applied for quantification experiments. The detection limit was found to be 2 × 10-5 M (3σ criterion) and repeatability was evaluated by the relative standard deviation of 4.5%. The influence of sugars, and compounds structurally related to caffeine on the current response of caffeine was evaluated and found to have no significant influence on the electrode performance. The suitability of bare carbon electrodes for routine analysis was successfully demonstrated by quantifying caffeine content in seven commercially available drinks and the results were validated using a standard ultra-high performance liquid chromatography method. This work demonstrates that bare glassy carbon electrodes are a simple, reliable and cost-effective platform for rapid analysis of targets such as caffeine in commercial products and they represent therefore a competitive alternative to the existing analytical methodologies for routine food analysis.
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Affiliation(s)
- Luca Redivo
- Department of Chemistry and Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | | | | | | | - Marina Resmini
- Department of Chemistry and Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Ĺubomír Švorc
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, Bratislava 812 37, Slovak Republic
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Tanaka S, Dohi T, Aizawa SI, Kemmei T, Terashima H, Taga A, Yamamoto A, Kodama S. Simultaneous determination of alcohols including diols and triols by HPLC with ultraviolet detection based on the formation of a copper(II) complex. J Sep Sci 2017; 40:4168-4175. [PMID: 28851084 DOI: 10.1002/jssc.201700635] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/23/2017] [Accepted: 08/23/2017] [Indexed: 12/12/2022]
Abstract
We developed a reversed-phase high-performance liquid chromatography method with ultraviolet detection using on-line complexation with Cu(II) ion for analysis of five alcohols including diols and triol (methanol, ethanol, 1,2-propanediol, 1,3-propanediol, and glycerol). The Cu(II) ion concentration in the mobile phase had a great influence on the peak areas of these alcohols, but not on their retention times. Column temperature (25-40°C) and pH of the mobile phase did not affect the separation of analytes. The optimum separation conditions were determined as 5 mM CuSO4 , 3 mM H2 SO4 , and 3 mM NaOH at 30°C. The ratio of the peak areas for three alcohols (methanol, 1,2-propanediol, and glycerol) was in good agreement with that calculated from the obtained stability constants, molar absorption coefficients for the 1:1 Cu(II) complexes with the three alcohols, and the injected molar quantities. This fact strongly suggests that the observed high-performance liquid chromatography signals resulted from formation of the 1:1 Cu(II)-alcohol complexes. Using the proposed method, these five alcohols in spirit, liquid for electronic cigarette, mouthwash, and nail enamel remover samples were successfully analyzed with only a simple pretreatment.
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Affiliation(s)
- Sohei Tanaka
- School of Science, Tokai University, Hiratsuka, Kanagawa, Japan
| | - Takumi Dohi
- School of Science, Tokai University, Hiratsuka, Kanagawa, Japan
| | - Sen-Ichi Aizawa
- Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, Japan
| | | | | | - Atsushi Taga
- Faculty of Pharmacy, Kindai University, Higashi-Osaka, Japan
| | - Atsushi Yamamoto
- Department of Biological Chemistry, College of Bioscience and Biotechnology, Chubu University, Kasugai-shi, Aichi, Japan
| | - Shuji Kodama
- School of Science, Tokai University, Hiratsuka, Kanagawa, Japan
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