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Ariaeenejad S, Barani M, Sarani M, Lohrasbi-Nejad A, Mohammadi-Nejad G, Salekdeh GH. Green synthesis of NiO NPs for metagenome-derived laccase stabilization: Detoxifying pollutants and wastes. Int J Biol Macromol 2024; 266:130986. [PMID: 38508564 DOI: 10.1016/j.ijbiomac.2024.130986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/13/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
Laccases play a crucial role in neutralizing environmental pollutants, including antibiotics and phenolic compounds, by converting them into less harmful substances via a unique oxidation process. This study introduces an environmentally sustainable remediation technique, utilizing NiO nanoparticles (NPs) synthesized through green chemistry to immobilize a metagenome-derived laccase, PersiLac1, enhancing its application in pollutant detoxification. Salvadora persica leaf extract was used for the synthesis of NiO nanoparticles, utilizing its phytochemical constituents as reducing and capping agents, followed by characterization through different analyses. Characterization of NiO nanoparticles revealed distinctive FTIR absorption peaks indicating the nanoparticulate structure, while FESEM showed structured NiO with robust interconnections and dimensionality of about 50nm, confirmed by EDX analysis to have a consistent distribution of Ni and O. The immobilized PersiLac1 demonstrated enhanced thermal stability, with 85.55 % activity at 80 °C and reduced enzyme leaching, retaining 67.93 % activity across 15 biocatalytic cycles. It efficiently reduced rice straw (RS) phenol by 67.97 % within 210 min and degraded 70-78 % of tetracycline (TC) across a wide pH range (4.0-8.0), showing superior performance over the free enzyme. Immobilized laccase achieved up to 71 % TC removal at 40-80 °C, significantly outperforming the free enzyme. Notably, 54 % efficiency was achieved at 500 mg/L TC by immobilized laccase at 120 min. This research showed the potential of green-synthesized NiO nanoparticles to effectively immobilize laccase, presenting an eco-friendly approach to purify pollutants such as phenols and antibiotics. The durability and reusability of the immobilized enzyme, coupled with its ability to reduce pollutants, indicates a viable method for cleaning the environment. Nonetheless, the production costs and scalability of NiO nanoparticles for widespread industrial applications pose significant challenges. Future studies should focus on implementation at an industrial level and examine a wider range of pollutants to fully leverage the environmental clean-up capabilities of this innovative technology.
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Affiliation(s)
- Shohreh Ariaeenejad
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.
| | - Mahmood Barani
- Medical Mycology and Bacteriology Research Center, Kerman University of Medical Sciences, 76169-13555 Kerman, Iran.
| | - Mina Sarani
- Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Azadeh Lohrasbi-Nejad
- Department of Agricultural Biotechnology, Shahid Bahonar University of Kerman, Kerman, Iran; Research and Technology Institute of Plant Production, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Ghasem Mohammadi-Nejad
- Department of Agronomy and Plant Breeding, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran; Research and Technology Institute of Plant Production, Shahid Bahonar University of Kerman, Kerman, Iran
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Srivastava M, Bansal SL, Khan MS, Tripathi SC, Singh R, Rai AK. Rice Straw Waste-Based Biogas Production via Microbial Digestion: A Review. Mol Biotechnol 2023:10.1007/s12033-023-00904-x. [PMID: 37882940 DOI: 10.1007/s12033-023-00904-x] [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: 06/26/2023] [Accepted: 09/12/2023] [Indexed: 10/27/2023]
Abstract
The development of sustainable and renewable energy production is in high demand, and bioenergy production via microbial digestion of organic wastes is in prime focus. Biogas produced from the microbial digestion of organic waste is the most promising among existing biofuel options. In this context, biogas production from lignocellulosic biomass is one of the most viable and promising technologies for sustainable biofuel production. In the present review, an assessment and feasibility advancement have been presented towards the sustainable production of biogas from rice straw waste. Rice straw (RS) is abundantly available, contains a high composition of cellulose, and is found under the category of lignocellulosic waste, but it may cause severe environmental issues if not treated. Whereas, due to its high cellulose and inorganic content, lower cost, and huge availability, this waste can be effectively valorized into biogas production at a lower cost on a commercial scale. Therefore, the present review provides existing insight in this area by focusing on the operational parameter's improvement and advancement in the research for the expansion of mass-scale production at a lower cost. Thus, the presented review analyzed the processing parameters status, associated challenges, and positive endnote solutions for more sustainable viability for biogas production.
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Affiliation(s)
- Manish Srivastava
- LCB Fertilizers Pvt. Ltd., Shyam Vihar Phase 2, Rani Sati Mandir Road, Lachchhipur, Gorakhpur, Uttar Pradesh, 273015, India.
| | - Swarn Lata Bansal
- Department of Chemistry, Lucknow University, Lucknow, UP, 226007, India
| | - Mohammad Suhail Khan
- Department of Public Health, College of Applied Medical Sciences, King Khalid University, Khamis Mushait Campus, Abha, Saudi Arabia
| | - Subhash C Tripathi
- Department of Chemistry, Institute of Applied Sciences and Humanities, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Rajeev Singh
- Department of Environmental Science, Jamia Millia Islamia (A Central University), New Delhi, 110025, India
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, 31441, Dammam, Saudi Arabia
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Luo X, Liu Y, Lei L, Shen J, Zhang Q, Wang Y, Ruan R, Cui X. Co-ensiling of rice straw and distillers grains to increase methane production and maximise energy output. BIORESOURCE TECHNOLOGY 2023; 386:129496. [PMID: 37468009 DOI: 10.1016/j.biortech.2023.129496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/03/2023] [Accepted: 07/12/2023] [Indexed: 07/21/2023]
Abstract
High organic matter preservation during ensiling promotes material conversion and energy output. In this study, the effects of co-ensiling distillers grains and rice straw on methane production was evaluated, as distillers grains are highly acidic. For co-ensiling, distillers grains and rice straw were mixed to produce methane at five carbon/nitrogen (C/N) ratios. RD20 (C/N20) and RD25 (C/N25) were defined as high-distillers-grain groups and other mixed groups as low-distillers-grain groups. The results showed that Lactobacillus was enriched in RD25, with the highest lactic acid content reaching 54.0 g/kg of dry matter. The pH and organic dry matter loss of RD25 were lower than those of low-distillers-grain groups, but the result for lignocellulose degradation rate was reversed. An 8.6% increase in methane yield and 7.9% increase in energy output were achieved in RD25. Ensiling-anaerobic digestion systems of C/N25 provide high organic matter preservation and energy output.
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Affiliation(s)
- Xuan Luo
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Luyao Lei
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Jiali Shen
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Qi Zhang
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Yunpu Wang
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
| | - Xian Cui
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China.
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Zhao H, Pu H, Yang Z. Study on the effect of different additives on the anaerobic digestion of hybrid Pennisetum: Comparison of nano-ZnO, nano-Fe 2O 3 and nano-Al 2O 3. Heliyon 2023; 9:e16313. [PMID: 37260894 PMCID: PMC10227347 DOI: 10.1016/j.heliyon.2023.e16313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023] Open
Abstract
The effects of three nanomaterials (ZnO, Al2O3, and Fe2O3) on the wet and dry anaerobic digestion (AD) processes of hybrid Pennisetum were assessed over 33 days, and the microbial communities of dry AD systems were studied. The results demonstrated that biogas production improved by 72.2% and 33.6% when nanoporous Al2O3 (nano-Al2O3) and nano-Fe2O3 were added during dry AD, respectively. However, biogas production decreased by 39.4% with nano-ZnO. Kinetic analysis showed that the three nanomaterials could shorten the lag phase of the AD sludge, while the 16S rRNA gene amplicon sequencing results demonstrated that microbes such as Longilinea and Methanosarcina were enriched in the nano-Al2O3 reactors and methanogenic communities community such as Methanobacterium sp., Methanobrevibacter sp., and Methanothrix sp., which were enriched in the nano-Al2O3 and nano-Fe2O3 reactors. However, the microbial community and some methanogenic communities diversity and richness were inhibited by the addition of nano-ZnO.
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Affiliation(s)
- Hongmei Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China
- School of Science, Yunnan Agricultural University, Kunming, 650201, China
| | - Haiping Pu
- School of Science, Yunnan Agricultural University, Kunming, 650201, China
| | - Zhaorong Yang
- School of Science, Yunnan Agricultural University, Kunming, 650201, China
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Duangkham S, Thuadaij P. Characterization of charcoal briquettes produced from blending rice straw and banana peel. Heliyon 2023; 9:e16305. [PMID: 37265614 PMCID: PMC10230212 DOI: 10.1016/j.heliyon.2023.e16305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 06/03/2023] Open
Abstract
Blending rice straw and banana peel to form briquettes pronounced their properties. The addition of banana peel resulted in high physical and combustion properties. Different briquette samples were procured by blending varying the loads of rice straw and banana peel at the ratios of 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70 20:80, 10:90, and 0:100, respectively, using cassava starch as the binder. The properties of the sample briquettes were investigated, and it was noted that the physical properties of briquettes produced using rice straw and banana peel at the ratios of 30:70, 20:80, and 10:90 had high bulk density of 610-660 kg/m3 and compressed density of 768-831 kg/m3. The combustion properties of low moisture and ash content were approximately 9.7%-10.6% and 16.5%-18.2%, respectively; volatile matter was 39.7%-44.0%; fixed carbon was 28.9%-32.4%; and high heating value was 20.98-21.26 MJ/kg. Residual waste from Community Enterprise of Crispy Banana Chips was used for the production of more effective briquettes and as a natural alternative fuel to expand the global eco-friendly charcoal briquette market.
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Affiliation(s)
- Sakesit Duangkham
- Division of Public Health, Faculty of Science, Buriram Rajabhat University, Buriram, 31000, Thailand
| | - Pattaranun Thuadaij
- Division of Chemistry, Faculty of Science, Buriram Rajabhat University, Buriram, 31000, Thailand
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Liu R, Chi W, Zhu Q, Jin H, Li J, Wang L. Capillary-Assisted Monitoring of Milk Freshness via a Porous Cellulose-Based Label with High pH Sensitivity. Foods 2023; 12:foods12091857. [PMID: 37174395 PMCID: PMC10178638 DOI: 10.3390/foods12091857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/08/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
A cellulose-based matrix for monitoring milk freshness (MF) was produced from rice straw particles (RSPs) in a 0.125-0.150 mm that was bis-quaternized to attach bromocresol purple (BP) as a sensor. Under alkali conditions, the obstinate structure of the rice straw had opened, thereby improving the accessibility of the cellulose. Bis-quaternization created more adsorption sites for BP. The maximum adsorption capacity was 97.68 mg/g. The sensors were interwoven with cellulosic fibers to form the cellulose-based label with a relatively loose three-dimensional structure via hydrogen bonds. As the proportion of BP-BCRPs was increased from 10% to 40%, the air permeability of the label increased from 3.76 to 15.01 mm/s, which increased the response to the tested gases (10.12 s for 1 mL of acetic acid). The intelligent label exhibited excellent sensitivity at pH values of 3-9 with highly saturated color changes. During the storage period, the label color shifted from blue-purple to yellow as acidity was increased from 17.24 to 19.8 °T due to capillarity action, providing a timely warning to consumers. The prepared colorimetric porous intelligent cellulose-based label is suitable for monitoring of MF.
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Affiliation(s)
- Ruoting Liu
- Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Wenrui Chi
- Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Qihao Zhu
- Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Hailan Jin
- Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Jian Li
- Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Lijuan Wang
- Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
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Haque S, Singh R, Harakeh S, Teklemariam AD, Tayeb HH, Deen PR, Srivastava UC, Srivastava M. Green synthesis of nanostructures from rice straw food waste to improve the antimicrobial efficiency: New insight. Int J Food Microbiol 2023; 386:110016. [PMID: 36435097 DOI: 10.1016/j.ijfoodmicro.2022.110016] [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: 06/17/2022] [Revised: 10/19/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
Abstract
Applications for nanotechnology, which is constantly gaining prominence, have been found in a variety of industrial applications. Due to the multiple benefits associated with it, including an eco-friendly, pollution-free, cost-effective, and non-toxic synthesis method, the green way to synthesize nanostructures utilizing waste biomasses has become one of the key focuses of the current researches globally. Additionally, lignocellulasic biomass (LCB), which is a waste of the food crops, can be used as one of the potential substrates for the synthesis of a variety of nanostructures. Among different types of LCB, rice straw is a potential food waste biomass and can be efficiently employed during the synthesis of different types of nanostructures for a range of technological applications. Here, diverse phenolic compounds found in rice straw as well as reducing sugars can be used as natural reducing and capping agents to prepare a range of nanostructures. Based on the aforementioned facts, the objective of this review is to investigate the viability of using rice straw to produce nanostructured materials using rice straw as a renewable biosource following an environmentally friendly method. Additionally, it is noted that various organic compounds present on the surface of nanostructures produced using rice straw extract/hydrolyzate through a green approach may be more successful in terms of antibacterial efficacy, which might be of considerable interest for a variety of biomedical applications. Based on the possibility of enhancing the antimicrobial activity of developed nanostructures, the review also provides overview on the feasibility, characteristics, and availability of using rice straw extract in the synthesis of nanostructures. Additionally, the constraints of the present and potential futures of the green synthesis methods using rice straw wastes have been explored.
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Affiliation(s)
- Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Rajeev Singh
- Department of Environmental Studies, Satyawati College, University of Delhi, Delhi 110052, India; Department of Environmental Science, Jamia Millia Islamia (A Central University), New Delhi 110025, India.
| | - Steve Harakeh
- King Fahd Medical Research Center and Yousef Abdullatif Jameel Chair of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Addisu Demeke Teklemariam
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hossam H Tayeb
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Nanomedicine Unit, Center of Innovation in Personalized Medicine, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
| | - Prakash Ranjan Deen
- Department of Physics, Purnea College, Purnea University, Purnea, Bihar 854301, India
| | - Umesh Chandra Srivastava
- Department of Physics, Amity Institute of Applied Sciences, Amity University, Noida, UP 201303, India
| | - Manish Srivastava
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi 221005, India; LCB Fertilizer Pvt. Ltd., Shyam Vihar Phase 2, Rani Sati Mandir Road, Lachchhipur, Gorakhpur, Uttar Pradesh-273015.
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Halysh V, Romero-García JM, Vidal AM, Kulik T, Palianytsia B, García M, Castro E. Apricot Seed Shells and Walnut Shells as Unconventional Sugars and Lignin Sources. Molecules 2023; 28:molecules28031455. [PMID: 36771117 PMCID: PMC9918925 DOI: 10.3390/molecules28031455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/23/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
The present study focuses on using apricot seeds shells and walnut shells as a potential renewable material for biorefinery in Ukraine. The goal of the research work was to determine the relationship between the chemical composition of solid residues from biomass after acid pretreatment with H2SO4, alkaline pretreatment with NaOH, and a steam explosion pretreatment and the recovery of sugars and lignin after further enzymatic hydrolysis with the application of an industrial cellulase Cellic CTec2. Apricot seeds shells and walnut shells consist of lots of cellulose (35.01 and 24.19%, respectively), lignin (44.55% and 44.63%, respectively), hemicelluloses (10.77% and 26.68%, respectively), and extractives (9.97% and 11.41%, respectively), which affect the efficiency of the bioconversion of polysaccharides to sugars. The alkaline pretreatment was found to be more efficient in terms of glucose yield in comparison with that of acid and steam explosion, and the maximum enzymatic conversions of cellulose reached were 99.7% and 94.6% for the solids from the apricot seeds shells and the walnut shells, respectively. The maximum amount of lignin (82%) in the residual solid was obtained during the processing of apricot seed shells submitted to the acid pretreatment. The amount of lignin in the solids interferes with the efficiency of enzymatic hydrolysis. The results pave the way for the efficient and perspective utilization of shells through the use of inexpensive, simple and affordable chemical technologies, obtaining value-added products, and thus, reducing the amount of environmental pollution (compared to the usual disposal practice of direct burning) and energy and material external dependency (by taking advantage of these renewable, low-cost materials).
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Affiliation(s)
- Vita Halysh
- Department of Ecology and Technology of Plant Polymers, Faculty of Chemical Engineering, Igor Sikorsky Kyiv Polytechnic Institute, Peremogy Avenu 37/4, 03056 Kyiv, Ukraine
- Laboratory of Kinetics and Mechanisms of Chemical Reactions on the Surface of Solids, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, General Naumov Str., 17, 03164 Kyiv, Ukraine
| | - Juan Miguel Romero-García
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
- Center for Advanced Studies in Earth Sciences, Energy and Environment (CEACTEMA), Universidad de Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
- Correspondence: (J.M.R.-G.); (E.C.); Tel.: +34-9532182163 (E.C.)
| | - Alfonso M. Vidal
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
| | - Tetiana Kulik
- Laboratory of Kinetics and Mechanisms of Chemical Reactions on the Surface of Solids, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, General Naumov Str., 17, 03164 Kyiv, Ukraine
| | - Borys Palianytsia
- Laboratory of Kinetics and Mechanisms of Chemical Reactions on the Surface of Solids, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, General Naumov Str., 17, 03164 Kyiv, Ukraine
| | - Minerva García
- Tecnológico Nacional de México/Instituto Tecnológico de Zitácuaro, Av. Tecnológico No. 186 Manzanillos, Zitácuaro 61534, Michoacán, Mexico
| | - Eulogio Castro
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
- Center for Advanced Studies in Earth Sciences, Energy and Environment (CEACTEMA), Universidad de Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
- Correspondence: (J.M.R.-G.); (E.C.); Tel.: +34-9532182163 (E.C.)
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Tantayotai P, Gundupalli MP, Katam K, Rattanaporn K, Cheenkachorn K, Sriariyanun M. In-depth investigation of the bioethanol and biogas production from organic and mineral acid pretreated sugarcane bagasse: Comparative and optimization studies. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Enzymatically triggered delignification through a novel stable laccase: A mixed in-silico /in-vitro exploration of a complex environmental microbiota. Int J Biol Macromol 2022; 211:328-341. [PMID: 35551951 DOI: 10.1016/j.ijbiomac.2022.05.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 11/23/2022]
Abstract
Laccases have been broadly applied as a multitasking biocatalyst in various industries, but their applications tend to be limited by easy deactivation, lack of adequate stability, and susceptibility under complex conditions. Identifying stable laccase as a green-biocatalyst is crucial for developing cost-effective biorefining processes. In this direction, we attempted in-silico screening a stable metagenome-derived laccase (PersiLac1) from tannery wastewater in a complex environment. The laccase exhibited high thermostability, retaining 53.19% activity after 180 min at 70 °C, and it was stable in a wide range of pH (4.0-9.0). After 33 days of storage at 50°C, pH 6.0, the enzyme retained 71.65% of its activity. Various metal ions, inhibitors, and organic solvents showed that PersiLac1 has a stable structure. The stable PersiLac1 could successfully remove lignin and phenolic from quinoa husk and rice straw. In the separate hydrolysis and fermentation process (SHF) after 72 h, hydrolysis was obtained 100% and 73.4% for quinoa husk and rice straw, and fermentation by the S. cerevisiae was be produced 41.46 g/L and 27.75g/L ethanol, respectively. Results signified that the novel lignin-degrading enzyme was confirmed to have great potential for industrial application as a green-biocatalyst based on enzymatically triggered to delignification and detoxify lignocellulosic biomass.
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Dev B, Bakshi A, Paramasivan B. Prospects of utilizing seawater as a reaction medium for pretreatment and saccharification of rice straw. CHEMOSPHERE 2022; 293:133528. [PMID: 34995624 DOI: 10.1016/j.chemosphere.2022.133528] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
The transition towards a bio-based economy has led to an unprecedented surge in fresh water consumption that renders biofuel a high water footprint product. The depleting fresh water resources have exacerbated the situation which necessitates the exploration of non-potable water for biorefinery purposes. In the current study, seawater is used as a plausible alternative reaction medium for pretreatment and saccharification of rice straw. Response Surface Methodology (RSM) based on Box-Behnken Design (BBD) was employed to model, predict and validate cellulose release and reducing sugar yield from rice straw subjected to microwave-NaOH pretreatment. The optimized pretreatment conditions were determined to be 8.54% substrate loading, 1.94% NaOH and 4.09 min which resulted in the maximum cellulose release of 65.43% and reducing sugar yield of 0.554 g/g. Several physico-chemical studies of the raw and pretreated biomass were carried out using bomb calorimetry, scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET) analysis and thermal gravimetric analysis (TGA) to examine the efficacy of pretreatment. Evidences of an apparent delignification was substantiated by the increase in surface area from 7.719 to 44.188 m2 g-1and pore volume from 0.039 to 0.071 mlg-1 which was consistent with the decrease in energy density and distorted surface morphology of the pretreated biomass. Further, the FTIR revealed a reduced peak in the absorption spectral bands at 1636 cm-1 which confirmed the pretreatment mediated degradation of lignin and hemicellulose. This finding provides evidence on the prospects of utilizing abundantly available seawater resource as a reaction medium for sustainable biofuel production.
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Affiliation(s)
- Binita Dev
- Department of Life Science, National Institute of Technology Rourkela, Odisha, 769008, India
| | - Arindam Bakshi
- Department of Food Science and Human Nutrition, Iowa State University, Iowa, 50011, USA
| | - Balasubramanian Paramasivan
- Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, 769008, Odisha, India.
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Huang Z, Zeng Y, Sun Q, Zhang W, Wang S, Shen C, Shi B. Insights into the mechanism of flavor compound changes in strong flavor baijiu during storage by using the density functional theory and molecular dynamics simulation. Food Chem 2022; 373:131522. [PMID: 34862078 DOI: 10.1016/j.foodchem.2021.131522] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/15/2021] [Accepted: 10/31/2021] [Indexed: 01/11/2023]
Abstract
The aging procedure/storage is essential to enhance the organoleptic quality of strong flavor baijiu (SFB). How the storage affects flavor changes in SFB, that is, the aging mechanisms remains unclear. Herein, the physical and chemical effects on the main flavor compounds of SFB during storage were investigated using the density functional theory (DFT) and molecular dynamics (MD) simulation. DFT calculation results showed that the activation energy of ester alkyl-oxygen protonation was lower than that of acid hydroxyl-oxygen protonation, which explained the reason why the concentrations of acids increased and those of esters decreased during SFB storage. MD simulation results showed that electrostatic interaction was a major contributor to SFB and that the ethanol-water system containing acids had a stronger electrostatic energy and more hydrogen bonds than the ethanol-water system containing esters. These findings revealed that acids are prone to generating and strengthening associative structures in SFB during storage.
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Affiliation(s)
- Zhangjun Huang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yunhang Zeng
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Qingyong Sun
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Wenhua Zhang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Songtao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, China; Luzhou Laojiao Co., Ltd., Luzhou 646000, China
| | - Caihong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, China; Luzhou Laojiao Co., Ltd., Luzhou 646000, China
| | - Bi Shi
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
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13
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Rabee AE, Sayed Alahl AA, Lamara M, Ishaq SL. Fibrolytic rumen bacteria of camel and sheep and their applications in the bioconversion of barley straw to soluble sugars for biofuel production. PLoS One 2022; 17:e0262304. [PMID: 34995335 PMCID: PMC8740978 DOI: 10.1371/journal.pone.0262304] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/21/2021] [Indexed: 01/04/2023] Open
Abstract
Lignocellulosic biomass such as barley straw is a renewable and sustainable alternative to traditional feeds and could be used as bioenergy sources; however, low hydrolysis rate reduces the fermentation efficiency. Understanding the degradation and colonization of barley straw by rumen bacteria is the key step to improve the utilization of barley straw in animal feeding or biofuel production. This study evaluated the hydrolysis of barley straw as a result of the inoculation by rumen fluid of camel and sheep. Ground barley straw was incubated anaerobically with rumen inocula from three fistulated camels (FC) and three fistulated sheep (FR) for a period of 72 h. The source of rumen inoculum did not affect the disappearance of dry matter (DMD), neutral detergent fiber (NDFD). Group FR showed higher production of glucose, xylose, and gas; while higher ethanol production was associated with cellulosic hydrolysates obtained from FC group. The diversity and structure of bacterial communities attached to barley straw was investigated by Illumina Mi-Seq sequencing of V4-V5 region of 16S rRNA genes. The bacterial community was dominated by phylum Firmicutes and Bacteroidetes. The dominant genera were RC9_gut_group, Ruminococcus, Saccharofermentans, Butyrivibrio, Succiniclasticum, Selenomonas, and Streptococcus, indicating the important role of these genera in lignocellulose fermentation in the rumen. Group FR showed higher RC9_gut_group and group FC revealed higher Ruminococcus, Saccharofermentans, and Butyrivibrio. Higher enzymes activities (cellulase and xylanase) were associated with group FC. Thus, bacterial communities in camel and sheep have a great potential to improve the utilization lignocellulosic material in animal feeding and the production of biofuel and enzymes.
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Affiliation(s)
- Alaa Emara Rabee
- Animal and Poultry Nutrition Department, Desert Research Center, Cairo, Egypt
| | | | - Mebarek Lamara
- Forest Research Institute, University of Quebec in Abitibi-Temiscamingue, Rouyn-Noranda, Canada
| | - Suzanne L. Ishaq
- School of Food and Agriculture, University of Maine, Orono, Maine, United States of America
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Aggarwal N, Pal P, Sharma N, Saravanamurugan S. Consecutive Organosolv and Alkaline Pretreatment: An Efficient Approach toward the Production of Cellulose from Rice Straw. ACS OMEGA 2021; 6:27247-27258. [PMID: 34693145 PMCID: PMC8529666 DOI: 10.1021/acsomega.1c04030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Indexed: 06/13/2023]
Abstract
The efficient removal of silica from rice straw and separation of its major components is essential for further valorization to produce value-added products. With regard to this, the isolation of cellulose (CEL), hemicellulose (HEM), and lignin (LIG) is imperative but quite challenging. Among several pretreatments of lignocellulosic biomass, the organosolv approach is deemed as one of the promising methods. Here, we present two different two-step approaches for the removal of silica and disintegration of significant components from rice straw, especially CEL; (i) base pretreatment, followed by organosolv treatment in the presence of organic acid, and (ii) organosolv pretreatment in the presence of organic acid, followed by base treatment. After each treatment, the recovered solid components are confirmed by various characterization techniques such as Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, and thermogravimetric analysis. Method 2 demonstrates 82% total removal of HEM and LIG along with 90.4% of silica removal from rice straw to obtain CEL. Furthermore, the obtained crude CEL is found to be with a purity of 78%. Excellent removal of silica (90.4%) reflects that in a test study, the crude CEL obtained from method 2 gives a higher yield of butyl glucosides (59.6%) than rice straw, which affords 45.0% of butyl glucosides.
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15
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Use of Machine Learning Methods for Predicting Amount of Bioethanol Obtained from Lignocellulosic Biomass with the Use of Ionic Liquids for Pretreatment. ENERGIES 2021. [DOI: 10.3390/en14010243] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The study objective was to model and predict the bioethanol production process from lignocellulosic biomass based on an example of empirical study results. Two types of algorithms were used in machine learning: artificial neural network (ANN) and random forest algorithm (RF). Data for the model included results of studying bioethanol production with the use of ionic liquids (ILs) and different enzymatic preparations from the following biomass types: buckwheat straw and biomass from four wastelands, including a mixture of various plants: stems of giant miscanthus, common nettle, goldenrod, common broom, fireweed, and hay (a mix of grasses). The input variables consisted of different ionic liquids (imidazolium and ammonium), enzymatic preparations, enzyme doses, time and temperature of pretreatment, and type of yeast for alcoholic fermentation. The output value was the bioethanol concentration. The multilayer perceptron (MLP) was used in the artificial neural networks. Two model types were created; the training dataset comprised 120 vectors (14 elements for Model 1 and 11 elements for Model 2). Assessment of the optimum random forest was carried out using the same division of experimental points (two random datasets, containing 2/3 for training and 1/3 for testing) and the same criteria used for the artificial neural network models. Data for mugwort and hemp were used for validation. In both models, the coefficient of determination for neural networks was <0.9, while for RF it oscillated around 0.95. Considering the fairly large spread of the determination coefficient, two hybrid models were generated. The use of the hybrid approach in creating models describing the present bioethanol production process resulted in an increase in the fit of the model to R2 = 0.961. The hybrid model can be used for the initial classification of plants without the necessity to perform lengthy and expensive research related to IL-based pretreatment and further hydrolysis; only their lignocellulosic composition results are needed.
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16
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Meng L, Jin K, Yi R, Chen M, Peng J, Pan Y. Enhancement of bioenergy recovery from agricultural wastes through recycling of cellulosic alcoholic fermentation vinasse for anaerobic co-digestion. BIORESOURCE TECHNOLOGY 2020; 311:123511. [PMID: 32417660 DOI: 10.1016/j.biortech.2020.123511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Cellulosic alcoholic fermentation generates large amounts of vinasse, which was utilized in the present work to enhance the anaerobic digestion of rice straw and swine manure at different total solid (TS) contents. Straw fermentation resulted in bioethanol and vinasse yields of 95.2 g and 857.7 mL, respectively, per kg dry straw. Vinasse-straw co-digestion showed the highest cumulative biogas yield of 633.4 L kg-1 VS at 3% TS. Therefore, biogas productivity from co-digestion represented 92.1% higher than that of straw mono-digestion. Vinasse-manure co-digestion showed the highest cumulative biogas yield of 676.7 L kg-1 VS at 3% TS at a shorter technical digestion time, which resulted in 53.9% higher biomethane productivity than the corresponding vinasse-straw. Consequently, vinasse co-digestion at all studied TS ratios enhanced the total gross energy output rate (GEORtotal) over mono-digestion. Amongst, vinasse-manure co-digestion at 3% TS showed 7.9% higher GEORtotal than the highest recorded value from vinasse-straw co-digestion.
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Affiliation(s)
- Liang Meng
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China; Cooperative Innovation Center for Sustainable Pig Production, 430070 Wuhan, China
| | - Keda Jin
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China
| | - Ran Yi
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, 610041 Chengdu, China; Risk Assessment Lab of the Quality Safety of Biomass Fermentation Products, Ministry of Agriculture, 610041 Chengdu, China
| | - Mengdi Chen
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China
| | - Jingjing Peng
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China
| | - Yulong Pan
- Wuhan Electronic Information Institute, Wuhan 430019, China.
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17
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Ashoor S, Sukumaran RK. Mild alkaline pretreatment can achieve high hydrolytic and fermentation efficiencies for rice straw conversion to bioethanol. Prep Biochem Biotechnol 2020; 50:814-819. [PMID: 32204649 DOI: 10.1080/10826068.2020.1744007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Mild alkaline pretreatment was evaluated as a strategy for effective lignin removal and hydrolysis of rice straw. The pretreatment efficiency of different NaOH concentrations (0.5, 1.0, 1.5 or 2.0% w/w) was assessed. Rice straw (RS) pretreated with 1.5% NaOH achieved better sugar yield compared to other concentrations used. A cellulose conversion efficiency of 91% (45.84 mg/ml glucose release) was attained from 1.5% NaOH pretreated rice straw (PRS), whereas 1% NaOH pretreated rice straw yielded 35.10 mg/ml of glucose corresponding to a cellulose conversion efficiency of 73.81%. The ethanol production from 1% and 1.5% NaOH pretreated RS hydrolysates was similar at ∼3.3% (w/v), corresponding to a fermentation efficiency of 86%. The non-detoxified hydrolysate was fermented using the novel yeast strain Saccharomyces cerevisiae RPP-03O without any additional supplementation of nutrients.
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Affiliation(s)
- Selim Ashoor
- Department of Agricultural Microbiology, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
| | - Rajeev K Sukumaran
- Biofuels and Biorefineries Section, Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, India
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19
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Kumar B, Bhardwaj N, Verma P. Pretreatment of rice straw using microwave assisted FeCl3-H3PO4 system for ethanol and oligosaccharides generation. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.100295] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Momayez F, Karimi K, Sárvári Horváth I. Sustainable and efficient sugar production from wheat straw by pretreatment with biogas digestate. RSC Adv 2019; 9:27692-27701. [PMID: 35529226 PMCID: PMC9070756 DOI: 10.1039/c9ra05285b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 08/28/2019] [Indexed: 11/22/2022] Open
Abstract
The use of liquid fraction of biogas digestate (LFBD) instead of fresh water (hydrothermal) for the pretreatment of wheat straw was evaluated to improve the yield of released sugars during the following hydrolysis step. The pretreatments were conducted at temperatures of 130, 160, and 190 °C for 30 and 60 min. In most of the cases, pretreatment using LFBD led to higher glucose yields and higher total sugars concentrations, compared to those obtained after applying hydrothermal pretreatments. The increase of temperature resulted in an increase in sugars during the enzymatic hydrolysis. The highest yields of glucose (about 59%) were observed after treatments at 190 °C for 60 min, independently of which type of pretreatment was applied and at 190 °C for 30 min using LFBD. Treatment, with LFBD at 190 °C and for 60 min, resulted in glucose and xylose concentrations of 7.36 g L-1 and 2.41 g L-1, respectively, after the subsequent hydrolysis for 48 h. However, the FTIR analysis indicated that the crystallinity index remained rather constant after treatment. Both FTIR and compositional analysis showed that the removal of hemicelluloses was the main effect of the pretreatment.
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Affiliation(s)
- Forough Momayez
- Department of Chemical Engineering, Isfahan University of Technology Isfahan 84156-83111 Iran
- Swedish Centre for Resource Recovery, University of Borås 501 90 Borås Sweden +46334354684
| | - Keikhosro Karimi
- Department of Chemical Engineering, Isfahan University of Technology Isfahan 84156-83111 Iran
- Industrial Biotechnology Group, Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology Isfahan 84156-83111 Iran
| | - Ilona Sárvári Horváth
- Swedish Centre for Resource Recovery, University of Borås 501 90 Borås Sweden +46334354684
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Bhatia L, Sharma A, Bachheti RK, Chandel AK. Lignocellulose derived functional oligosaccharides: production, properties, and health benefits. Prep Biochem Biotechnol 2019; 49:744-758. [PMID: 31050587 DOI: 10.1080/10826068.2019.1608446] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Lignocellulosic biomass (LB) is the renewable feedstock for the production of fuel/energy, feed/food, chemicals, and materials. LB could also be the versatile source of the functional oligosaccharides, which are non-digestible food ingredients having numerous applications in food, cosmetics, pharmaceutical industries, and others. The burgeoning functional food demand is expected to be more than US$440 billion in 2022. Because of higher stability at low pH and high temperature, oligosaccharides stimulate the growth of prebiotic bifidobacteria and lactic acid bacteria. Xylooligosaccharides (XOS) are major constituents of oligosaccharides consisting of 2-7 xylose monomeric units linked via β-(1,4)-linkages. XOS can be obtained from various agro-residues by thermochemical pretreatment, enzymatic or chemoenzymatic methods. While thermochemical methods are fast, reproducible, enzymatic methods are substrate specific, costly, and produce minimum side products. Enzymatic methods are preferred for the production of food grade and pharmaceutically important oligosaccharides. XOS are potent prebiotics having antioxidant properties and enhance the bio-adsorption of calcium and improving bowel functions, etc. LB can cater to the increasing demand of oligosaccharides because of their foreseeable amount and the advancements in technology to recover oligosaccharides. This paper summarizes the methods for oligosaccharides production from LB, classification, and benefits of oligosaccharides on human health.
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Affiliation(s)
- Latika Bhatia
- a Department of Microbiology & Bioinformatics, Atal Bihari Vajpayee University , Bilaspur , India
| | - Ashutosh Sharma
- b Department of Chemistry, Graphic Era University , Dehradun , India
| | - Rakesh K Bachheti
- c Department of Industrial Chemistry, College of Applied Science, Addis Ababa Science and Technology University , Addis Ababa , Ethiopia
| | - Anuj K Chandel
- d Department of Biotechnology, Engineering School of Lorena (EEL), University of São Paulo , Lorena , Brazil
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Nizamuddin S, Qureshi SS, Baloch HA, Siddiqui MTH, Takkalkar P, Mubarak NM, Dumbre DK, Griffin GJ, Madapusi S, Tanksale A. Microwave Hydrothermal Carbonization of Rice Straw: Optimization of Process Parameters and Upgrading of Chemical, Fuel, Structural and Thermal Properties. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E403. [PMID: 30696042 PMCID: PMC6384547 DOI: 10.3390/ma12030403] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/21/2019] [Accepted: 01/26/2019] [Indexed: 11/16/2022]
Abstract
The process parameters of microwave-induced hydrothermal carbonization (MIHTC) play an important role on the hydrothermal chars (hydrochar) yield. The effect of reaction temperature, reaction time, particle size and biomass to water ratio was optimized for hydrochar yield by modeling using the central composite design (CCD). Further, the rice straw and hydrochar at optimum conditions have been characterized for energy, chemical, structural and thermal properties. The optimum condition for hydrochar synthesis was found to be at a 180 °C reaction temperature, a 20 min reaction time, a 1:15 weight per volume (w/v) biomass to water ratio and a 3 mm particle size, yielding 57.9% of hydrochar. The higher heating value (HHV), carbon content and fixed carbon values increased from 12.3 MJ/kg, 37.19% and 14.37% for rice straw to 17.6 MJ/kg, 48.8% and 35.4% for hydrochar. The porosity, crystallinity and thermal stability of the hydrochar were improved remarkably compared to rice straw after MIHTC. Two characteristic peaks from XRD were observed at 2θ of 15° and 26°, whereas DTG peaks were observed at 50⁻150 °C and 300⁻350 °C for both the materials. Based on the results, it can be suggested that the hydrochar could be potentially used for adsorption, carbon sequestration, energy and agriculture applications.
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Affiliation(s)
| | - Sundus Saeed Qureshi
- Institute of Environmental Engineering and Management, Mehran University of Engineering and Technology, Jamshoro 76090, Sindh, Pakistan.
| | | | | | - Pooja Takkalkar
- School of Engineering, RMIT University, Melbourne 3000, Australia.
| | - Nabisab Mujawar Mubarak
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, 98009 Sarawak, Malaysia.
| | - Deepa K Dumbre
- School of Engineering, RMIT University, Melbourne 3000, Australia.
| | | | | | - Akshat Tanksale
- Department of Chemical Engineering, Monash University, Clayton 3800, Australia.
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Singh PK, Srichandan H, Ojha SK, Mishra S, Naik K. A comparative study of biogasification of wheat straw, sugarcane bagasse and pressmud. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2019; 54:306-314. [PMID: 30663503 DOI: 10.1080/10934529.2018.1548812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
A study to compare biogas production potentials of wheat straw, sugarcane bagasse and pressmud was conducted at pH 8.0, temperature 40 °C and substrate concentration 20 g/L. Raw substrates were thermogravimetrically and Fourier-transform infrared spectroscopically characterised. TGA showed the weight loss of samples attributable to moisture, hemicellulose, cellulose and lignin losses. FTIR analysis indicated functional groups characteristics of hemicellulose, cellulose and lignin. Biogas production was the maximum between 10th and 25th day for all the tests. WS with 10% inoculum showed the highest cumulative biogas production of 370 mL/g followed by the SB (316 mL/g) and PM (211 mL/g) counterparts. The corresponding values with 5% inoculum were 303 mL/g (WS), 244 mL/g (SB) and 152 mL/g (PM). The inoculum volume also positively affected the cumulative biogas production (22.1, 29.5 and 38.8% respectively). The higher volatile fatty acids as observed in case of WS which further facilitated higher biogas production could be due to its maximum volatile solids content (88.9%) and water swelling capacity (7.37). A consistently increasing trend in the methane content (varying between 54 and 61%) in all the tests was observed till the 20th day. The biogas (7.7-21.7 mL/g) and the methane (35-42%) contents showed a decreasing trend thereafter, the lowest being observed during the 35-40-day period.
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Affiliation(s)
- Puneet Kumar Singh
- a BDTC, Bioenergy Lab , School of Biotechnology, KIIT , Bhubaneswar , Odisha , India
| | | | - Sanjay Kumar Ojha
- b Departmet of Biophysics , All India Institute of Medical Sciences , New Delhi , India
| | - Snehasish Mishra
- a BDTC, Bioenergy Lab , School of Biotechnology, KIIT , Bhubaneswar , Odisha , India
| | - Kalyani Naik
- a BDTC, Bioenergy Lab , School of Biotechnology, KIIT , Bhubaneswar , Odisha , India
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