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Datta R. Enzymatic degradation of cellulose in soil: A review. Heliyon 2024; 10:e24022. [PMID: 38234915 PMCID: PMC10792583 DOI: 10.1016/j.heliyon.2024.e24022] [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: 10/11/2022] [Revised: 12/13/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024] Open
Abstract
Cellulose degradation is a critical process in soil ecosystems, playing a vital role in nutrient cycling and organic matter decomposition. Enzymatic degradation of cellulosic biomass is the most sustainable and green method of producing liquid biofuel. It has gained intensive research interest with future perspective as the majority of terrestrial lignocellulose biomass has a great potential to be used as a source of bioenergy. However, the recalcitrant nature of lignocellulose limits its use as a source of energy. Noteworthy enough, enzymatic conversion of cellulose biomass could be a leading future technology. Fungal enzymes play a central role in cellulose degradation. Our understanding of fungal cellulases has substantially redirected in the past few years with the discovery of a new class of enzymes and Cellulosome. Efforts have been made from time to time to develop an economically viable method of cellulose degradation. This review provides insights into the current state of knowledge regarding cellulose degradation in soil and identifies areas where further research is needed.
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Affiliation(s)
- Rahul Datta
- Department of Geology and Pedology, Faculty of Forestry and Wood Technology. Mendel University In Brno, Czech Republic
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2
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Rivera AMP, Toro CR, Londoño L, Bolivar G, Ascacio JA, Aguilar CN. Bioprocessing of pineapple waste biomass for sustainable production of bioactive compounds with high antioxidant activity. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01627-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
AbstractThe effect of temperature, moisture content and pH during solid-state fermentation (SSF) of MD2 pineapple peel with Rhizopus oryzae (MUCL 28168) was evaluated on the release of bioactive compounds with antioxidant capacity. Applying a central composite design, it was found that temperature had a significant effect (p < 0.05) on the total phenolic content and DPPH antioxidant activity while for the ABTS radical elimination activity, the factor that presented a significant effect was the pH (p < 0.05); as this factor increases, the antioxidant activity enhances. The optimal conditions for fermentation process were 80% of moisture content, pH 5.5, temperature 37.3 °C and 24 h of process to maximize phenolic content and antioxidant activity. Gallic acid, chlorogenic acid, caffeic acid and cinnamic acid were identified in the extracts by HPLC analysis. These results permit to conclude that SSF of pineapple peel is an effective bioprocess for the release of phenolic compounds with antioxidant activity.
Graphical abstract
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Application of solid-state fermentation by microbial biotechnology for bioprocessing of agro-industrial wastes from 1970 to 2020: A review and bibliometric analysis. Heliyon 2022; 8:e09173. [PMID: 35368548 PMCID: PMC8971590 DOI: 10.1016/j.heliyon.2022.e09173] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/14/2022] [Accepted: 03/18/2022] [Indexed: 11/21/2022] Open
Abstract
This paper reviews the pertinent literature from 1970 to 2020 and presents a bibliometric analysis of research trends in the application of solid-state fermentation in the bioprocessing of agro-industrial wastes. A total 5630 publications of studies on solid-state fermentation that comprised of 5208 articles (92.50%), 340 book chapters (6.04%), 39 preprints (0.69%), 32 proceedings (0.56%), 8 edited books (0.14%) and 3 monographs (0.05%) were retrieved from Dimensions database. A review of the literature indicated that (i) fermentation of solid substrates is variously defined in the literature over the past 50 years, where "solid-state fermentation" is the most dominant research term used, and (ii) key products derived from the valorization of agro-industrial wastes through solid-state fermentation include, among others, enzymes, antioxidants, animal feed, biofuel, organic acids, biosurfactants, etc. Bibliometric analyses with VOSviewer revealed an astronomic increase in publications between 2000 and 2020, and further elucidated the most frequently explored core research topics, the most highly cited publications and authors, and countries/regions with the highest number of citations. The most cited publication between 2010 and 2020 had 382 citations compared to 725 citations for the most cited publication from 1970 to 2020. Ashok Pandey from India was the most published and cited author with 123 publications and 8,613 citations respectively; whereas Bioresource Technology was the most published and cited journal with 233 publications and 12,394 citations. Countries with the most publications and citations are Brazil, France, India, and Mexico. These findings suggest that research in the application of solid-state fermentation for bioprocessing of agro-industrial wastes has gained prominence over the past 50 years. Future perspectives and implications are discussed.
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4
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Gómez-García R, Campos DA, Aguilar CN, Madureira AR, Pintado M. Valorisation of food agro-industrial by-products: From the past to the present and perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 299:113571. [PMID: 34488107 DOI: 10.1016/j.jenvman.2021.113571] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 08/07/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Food agro-industrial by-products mainly include peels, seeds, stems, bagasse, kernels, and husk, derived during food processing. Due to their overproduction and the lack of sustainable management, such by-products have been conventionally rejected and wasted in landfills, being the principal strategy for their treatment, but nowadays, this strategy has been associated with several environmental, social and economic issues. Hence, we focused on the use of different consolidated biotechnological processes and methodologies as suitable strategies for food by-products management and valorisation, highlighting them as potential bioresources because they still gather high compositional and nutritional value, owing to their richness in functional and bioactive molecules with human health benefits. Food by-products could be utilised for the development of new food ingredients or products for human consumption, promoting their integral valorisation and reincorporation to the food supply chain within the circular bioeconomy concept, creating revenue streams, business and job opportunities. In this review, the main goal was to provide a general overview of the food agro-industrial by-products utilised throughout the years, improving global sustainability and human nutrition, emphasising the importance of biowaste valorisation as well as the methodologies employed for the recovery of value-added molecules.
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Affiliation(s)
- Ricardo Gómez-García
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal; BBG-DIA. Bioprocesses and Bioproducts Group. Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo, Coahuila, Mexico.
| | - Débora A Campos
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
| | - Cristóbal N Aguilar
- BBG-DIA. Bioprocesses and Bioproducts Group. Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo, Coahuila, Mexico
| | - Ana R Madureira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
| | - Manuela Pintado
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal.
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Marcus A, Fox G. Fungal Biovalorization of a Brewing Industry Byproduct, Brewer's Spent Grain: A Review. Foods 2021; 10:2159. [PMID: 34574269 PMCID: PMC8465358 DOI: 10.3390/foods10092159] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 11/17/2022] Open
Abstract
The beer industry is a major producer of solid waste globally, primarily in the form of brewer's spent grain (BSG), which due to its low value has historically been diverted to livestock as feed or to landfills. However, its high moisture content and chemical composition positions BSG as an ideal candidate for further processing with microbial fermentation. Recent research has focused on filamentous fungi and the ability of some species therein to degrade the predominant recalcitrant cellulolignin components of BSG to produce valuable compounds. Many species have been investigated to biovalorize this waste stream, including those in the genuses Aspergillus, Penicillium, Rhyzopus, and Trichoderma, which have been used to produce a wide array of highly valuable enzymes and other functional compounds, and to increase the nutritional value of BSG as an animal feed. This review of recent developments in the application of filamentous fungi for the valorization of BSG discusses the biochemical makeup of BSG, the biological mechanisms underlying fungi's primacy to this application, and the current applications of fungi in this realm.
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Affiliation(s)
| | - Glen Fox
- Food Science and Technology Department, University of California, One Shields Ave, Davis, CA 95616, USA;
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6
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Debnath R, Das S, Mukhopadhyay A, Saha T. Enrichment of laccase production by Phoma herbarum isolate KU4 under solid-state fermentation by optimizing RSM coefficients using genetic algorithm. Lett Appl Microbiol 2021; 73:515-528. [PMID: 34263965 DOI: 10.1111/lam.13537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/27/2021] [Accepted: 07/07/2021] [Indexed: 10/20/2022]
Abstract
The process parameters were optimized to obtain enhanced enzyme activity from the fungus Phoma herbarum isolate KU4 using rice straw and saw dust as substrate under solid-state fermentation using Response surface methodology (RSM). Genetic algorithm was used to validate the RSM for maximum laccase production. Six variables, viz., pH of the media, initial moisture content, copper sulphate concentration, concentration of tannic acid, inoculum concentration and incubation time were found to be effective and optimized for enhanced production. Maximum laccase production was achieved by RSM at pH 5·0 and 86% of initial moisture content of the culture medium, 150 µmol l-1 of CuSO4 , 1·5% tannic acid and 0·128 g inoculum g-1 dry substrate inoculum size on the fourth day of fermentation. The highest laccase activity was observed as 79 008 U g-1 , which is approximately sixfold enhanced production compared to the unoptimized condition (12 085·26 U g-1 ).
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Affiliation(s)
- R Debnath
- Department of Molecular Biology & Biotechnology, Faculty of Science, University of Kalyani, Kalyani, India
| | - S Das
- Department of Molecular Biology & Biotechnology, Faculty of Science, University of Kalyani, Kalyani, India
| | - A Mukhopadhyay
- Department of Computer Science & Engineering, Faculty of Engineering Technology & Management, University of Kalyani, Kalyani, West Bengal, India
| | - T Saha
- Department of Molecular Biology & Biotechnology, Faculty of Science, University of Kalyani, Kalyani, India
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7
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Soares GA, Alnoch RC, Silva Dias G, Santos Reis ND, Tavares IMDC, Ruiz HA, Bilal M, de Oliveira JR, Krieger N, Franco M. Production of a fermented solid containing lipases from Penicillium roqueforti ATCC 10110 and its direct employment in organic medium in ethyl oleate synthesis. Biotechnol Appl Biochem 2021; 69:1284-1299. [PMID: 34021924 DOI: 10.1002/bab.2202] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/19/2021] [Indexed: 01/28/2023]
Abstract
The production and direct employment in organic medium in the ethyl-oleate synthesis of a fermented solid (FS) containing lipases by Penicillium roqueforti ATCC 10110 (PR10110) was investigated. For the production of this FS, the solid-state fermentation of different agroindustrial waste was used, such as: cocoa shell, sugarcane bagasse, sugarcane bagasse with cocoa shell, and cocoa shell with soybean oil and nutrient solution. The response surface methodology was used to study the effect of independent variables of initial moisture content and inductor concentration, as carbon source and inducer on lipase production. The characterization of the fermented solid in organic medium was also carried out. The highest lipase activity (53 ± 5 U g-1 ) was 16% higher than that obtained with the nonoptimized conditions. The characterization studies observed high stability of the FS in organic solvents for 5 h at 30°C, as well as at different temperatures, and the residual activity was measured against triolein. The FS was also able to catalyze ethyl-oleate synthesis maintaining high relative conversion over five reaction cycles of 96 h at 40°C in n-heptane. These results are promising and highlight the use of the FS containing PR10110 lipases for the first time in biocatalytic processes.
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Affiliation(s)
| | - Robson Carlos Alnoch
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto - University of São Paulo, Ribeirão Preto, Brazil.,Department of Biochemistry and Molecular Biology, Federal University of Paraná, Polytechnic Center, Curitiba, Brazil
| | - Glauco Silva Dias
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Polytechnic Center, Curitiba, Brazil
| | - Nadabe Dos Santos Reis
- Techno-Science and Innovation Training Center, Federal University of Southern Bahia, Itabuna, Brazil
| | | | - Héctor A Ruiz
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuil, Coahuila, Mexico
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | | | - Nadia Krieger
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto - University of São Paulo, Ribeirão Preto, Brazil
| | - Marcelo Franco
- Department of Exact Sciences and Technology, State University of Santa Cruz, Ilhéus, Brazil
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8
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Saye LMG, Navaratna TA, Chong JPJ, O’Malley MA, Theodorou MK, Reilly M. The Anaerobic Fungi: Challenges and Opportunities for Industrial Lignocellulosic Biofuel Production. Microorganisms 2021; 9:694. [PMID: 33801700 PMCID: PMC8065543 DOI: 10.3390/microorganisms9040694] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/12/2021] [Accepted: 03/18/2021] [Indexed: 11/17/2022] Open
Abstract
Lignocellulose is a promising feedstock for biofuel production as a renewable, carbohydrate-rich and globally abundant source of biomass. However, challenges faced include environmental and/or financial costs associated with typical lignocellulose pretreatments needed to overcome the natural recalcitrance of the material before conversion to biofuel. Anaerobic fungi are a group of underexplored microorganisms belonging to the early diverging phylum Neocallimastigomycota and are native to the intricately evolved digestive system of mammalian herbivores. Anaerobic fungi have promising potential for application in biofuel production processes due to the combination of their highly effective ability to hydrolyse lignocellulose and capability to convert this substrate to H2 and ethanol. Furthermore, they can produce volatile fatty acid precursors for subsequent biological conversion to H2 or CH4 by other microorganisms. The complex biological characteristics of their natural habitat are described, and these features are contextualised towards the development of suitable industrial systems for in vitro growth. Moreover, progress towards achieving that goal is reviewed in terms of process and genetic engineering. In addition, emerging opportunities are presented for the use of anaerobic fungi for lignocellulose pretreatment; dark fermentation; bioethanol production; and the potential for integration with methanogenesis, microbial electrolysis cells and photofermentation.
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Affiliation(s)
- Luke M. G. Saye
- Department of Biology, University of York, York YO10 5DD, UK; (L.M.G.S.); (J.P.J.C.)
- Department of Agriculture and the Environment, Harper Adams University, Newport TF10 8NB, UK
| | - Tejas A. Navaratna
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA; (T.A.N.); (M.A.O.)
| | - James P. J. Chong
- Department of Biology, University of York, York YO10 5DD, UK; (L.M.G.S.); (J.P.J.C.)
| | - Michelle A. O’Malley
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA; (T.A.N.); (M.A.O.)
| | - Michael K. Theodorou
- Department of Agriculture and the Environment, Harper Adams University, Newport TF10 8NB, UK
| | - Matthew Reilly
- Department of Biology, University of York, York YO10 5DD, UK; (L.M.G.S.); (J.P.J.C.)
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9
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Alhomodi AF, Zavadil A, Berhow M, Gibbons WR, Karki B. Application of Cocultures of Fungal Mycelium during
Solid‐State
Fermentation of Canola Meal for Potential Feed Application. J AM OIL CHEM SOC 2021. [DOI: 10.1002/aocs.12479] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ahmad F. Alhomodi
- Department of Biology and Microbiology South Dakota State University Brookings SD 57007 USA
| | - Andrea Zavadil
- Department of Biology and Microbiology South Dakota State University Brookings SD 57007 USA
| | - Mark Berhow
- USDA, Agricultural Research Service National Center for Agricultural Utilization Research Peoria IL 61604 USA
| | - William R. Gibbons
- Department of Biology and Microbiology South Dakota State University Brookings SD 57007 USA
| | - Bishnu Karki
- Department of Biology and Microbiology South Dakota State University Brookings SD 57007 USA
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10
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Wang YS, Wang XL, Zhou HY, Hu HF, Xue YP, Zheng YG. Production of ( R)-2-(4-hydroxyphenoxy) propionic acid by Beauveria bassiana ZJB16007 in solid state fermentation using rice bran. Prep Biochem Biotechnol 2020; 50:781-787. [DOI: 10.1080/10826068.2020.1737939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Yuan-Shan Wang
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Xian-Lin Wang
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Hai-Yan Zhou
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Hai-Feng Hu
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Ya-Ping Xue
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Yu-Guo Zheng
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, China
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11
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El-Naggar NEA, El-Shweihy NM. Bioprocess development for L-asparaginase production by Streptomyces rochei, purification and in-vitro efficacy against various human carcinoma cell lines. Sci Rep 2020; 10:7942. [PMID: 32409719 PMCID: PMC7224186 DOI: 10.1038/s41598-020-64052-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/09/2020] [Indexed: 12/17/2022] Open
Abstract
In the near future, the demand for L-asparaginase is expected to rise several times due to an increase in its clinical and industrial applications in various industrial sectors, such as food processing. Streptomyces sp. strain NEAE-K is potent L-asparaginase producer, isolated and identified as new subsp. Streptomyces rochei subsp. chromatogenes NEAE-K and the sequence data has been deposited under accession number KJ200343 at the GenBank database. Sixteen different independent factors were examined for their effects on L-asparaginase production by Streptomyces rochei subsp. chromatogenes NEAE-K under solid state fermentation conditions using Plackett-Burman design. pH, dextrose and yeast extract were the most significant factors affecting L-asparaginase production. Thus, using central composite design, the optimum levels of these variables were determined. L-asparaginase purification was carried out by ammonium sulfate followed by DEAE-Sepharose CL-6B ion exchange column with a final purification fold of 16.18. The monomeric molecular weight of the purified L-asparaginase was 64 kD as determined by SDS-PAGE method. The in vitro effects of L-asparaginase were evaluated on five human tumor cell lines and found to have a strong anti-proliferative effects. The results showed that the strongest cytotoxic effect of L-asparaginase was exerted on the HeLa and HepG-2 cell lines (IC50 = 2.16 ± 0.2 and 2.54 ± 0.3 U/mL; respectively). In addition, the selectivity index of L-asparaginase against HeLa and HepG-2 cell lines was 3.94 and 3.35; respectively.
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Affiliation(s)
- Noura El-Ahmady El-Naggar
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt.
| | - Nancy M El-Shweihy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
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12
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Solid-state fermentation for single-cell protein enrichment of guava and cashew by-products and inclusion on cereal bars. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101576] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Naik B, Goyal S, Tripathi A, Kumar V. Screening of agro-industrial waste and physical factors for the optimum production of pullulanase in solid-state fermentation from endophytic Aspergillus sp. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101423] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Liu SR, Zhang WR. Optimization of submerged culture conditions involving a developed fine powder solid seed for exopolysaccharide production by the medicinal mushroom Ganoderma lucidum. Food Sci Biotechnol 2019; 28:1135-1145. [PMID: 31275713 PMCID: PMC6595012 DOI: 10.1007/s10068-018-0536-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/03/2018] [Accepted: 12/06/2018] [Indexed: 10/27/2022] Open
Abstract
To facilitate Ganoderma lucidum submerged cultivation and achieve high productivity, four fine powder solid substrates incorporated with different nitrogen-rich supplements were utilized to grow the fungus and as solid seed for its submerged culture. Of the four solid seeds, the soybean meal solid seed gave the highest biomass (10.73 g/L) and exopolysaccharide (EPS) (1.22 g/L), higher than those (8.36 g/L biomass and 0.44 g/L EPS) obtained with mycelial liquid seed. The optimal level of soybean meal supplementation was 20% (w/w) for production of the solid seed. Following single factor experiments, levels of three selected process variables were optimized as: the moisture content of solid seed, 70%; inoculum size, 0.8 g/flask; and rotary speed, 160 rpm. These conditions were validated experimentally with improved EPS yield of 1.33 g/L. The developed solid seed can be conveniently used for G. lucidum submerged culture with improved EPS productivity.
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Affiliation(s)
- Sheng-Rong Liu
- College of Life Science, Ningde Normal University, Ningde, 352100 China
- Fujian Higher Education Research Center for Local Biological Resources in Ningde City, Ningde, 352100 China
| | - Wei-Rui Zhang
- College of Life Science, Ningde Normal University, Ningde, 352100 China
- Fujian Higher Education Research Center for Local Biological Resources in Ningde City, Ningde, 352100 China
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15
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Heterologous expression, purification and biochemical characterization of a new xylanase from Myceliophthora heterothallica F.2.1.4. Int J Biol Macromol 2019; 131:798-805. [PMID: 30905755 DOI: 10.1016/j.ijbiomac.2019.03.108] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 11/21/2022]
Abstract
Myceliophthora heterothallica is a thermophilic fungus potentially relevant for the production of enzymes involved in the degradation of plant biomass. A xylanase encoding gene of this species was identified by means of RT-PCR using primers designed based on a xylanase coding sequence (GH11) of the fungus M. thermophila. The obtained gene was ligated to the vector pET28a(+) and the construct was transformed into Escherichia coli cells. The recombinant xylanase (r-ec-XylMh) was heterologously expressed, and the highest activity was observed at 55 °C and pH 6. The enzyme stability was greater than 70% between pH 4.5 and 9.5 and the inclusion of glycerol (50%) resulted in a significant increase in thermostability. Under these conditions, the enzyme retained more than 50% residual activity when incubated at 65 °C for 1 h, and approximately 30% activity when incubated at 70 °C for the same period. The tested cations did not increase xylanolytic activity, and the enzyme indicated significant tolerance to several phenolic compounds after 24 h, as well as high specificity for xylan, with no activity for other substrates such as CMC (carboxymethylcellulose), Avicel, pNPX (p-nitrophenyl-β-D-xylopyranoside) and pNPA (p-nitrophenyl-α-L-arabinofuranoside), and is thus, of potential relevance in pulp bleaching.
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16
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Guo N, Jiang YW, Song XR, Li YY, Liu ZM, Fu YJ. Effect of Bacillus natto solid-state fermentation on the functional constituents and properties of Ginkgo seeds. J Food Biochem 2019; 43:e12820. [PMID: 31353517 DOI: 10.1111/jfbc.12820] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/01/2019] [Accepted: 02/02/2019] [Indexed: 12/25/2022]
Abstract
In the present investigation, fibrinolytic Ginkgo seeds were produced by solid-state fermentation (SSF) with Bacillus natto strains, and some parameters of the fermentation processes were investigated. Under optimal fermentation conditions, the fibrinolytic activity of Ginkgo seeds reached 3,682 ± 43 IU/g with the fermentation parameters of relative humidity 80%, initial water content 73%, fermentation temperature 38°C, inoculation volume 18%, and fermentation time 38 hr, respectively. The fermented Ginkgo seeds possessed a superior potential for the production of Nattokinase. What's more, the fermented Ginkgo seeds possessed higher total flavonoid and lower ginkgolic acids contents, which could enhance bioactivity and guarantee food safety. Sensory evaluations indicated that Ginkgo seeds produced by SSF could also be consumed as a kind of popular food. PRACTICAL APPLICATIONS: Fermented food is popular in countries. It can not only improve the sensory properties of the products, reduce undesirable constituents, and make nutrients easily absorbable, but also improve the nutritional properties. Ginkgo biloba L is one of the oldest species that has existed on earth for more than 200 million years. However, the application of Ginkgo seeds has been limited because of the ginkgolic acids. In a previous study, immobilized Bacillus natto acted upon Ginkgo seeds to enhance the bioactivity and safety of fermented Ginkgo seeds. However, separating the fermented Ginkgo seeds from the liquid needs a large amount of energy. The solid-state fermentation of Ginkgo seeds is a good choice to produce functional Ginkgo seed products.
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Affiliation(s)
- Na Guo
- Northeast Forestry University, Harbin, P. R. China
| | - Yi-Wei Jiang
- Northeast Forestry University, Harbin, P. R. China
| | - Xin-Rui Song
- Northeast Forestry University, Harbin, P. R. China
| | - Yan-Yan Li
- Northeast Forestry University, Harbin, P. R. China
| | - Zhi-Ming Liu
- Northeast Forestry University, Harbin, P. R. China
| | - Yu-Jie Fu
- Northeast Forestry University, Harbin, P. R. China.,Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, P. R. China
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Behnam S, Karimi K, Khanahmadi M. Cellulase Production Under Solid-State Fermentation by Ethanolic Zygomycetes Fungi: Application of Response Surface Methodology. NUTRITION AND FOOD SCIENCES RESEARCH 2019. [DOI: 10.29252/nfsr.6.1.27] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Newly isolate highly potential xylanase producer strain from various environmental sources. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.09.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Geoffry K, Achur RN. Screening and production of lipase from fungal organisms. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.03.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Contesini FJ, Melo RRD, Sato HH. An overview of Bacillus proteases: from production to application. Crit Rev Biotechnol 2017; 38:321-334. [DOI: 10.1080/07388551.2017.1354354] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Fabiano Jares Contesini
- Laboratory of Food Biochemistry, Department of Food Science, College of Food Engineering, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Ricardo Rodrigues de Melo
- Laboratory of Food Biochemistry, Department of Food Science, College of Food Engineering, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Hélia Harumi Sato
- Laboratory of Food Biochemistry, Department of Food Science, College of Food Engineering, State University of Campinas (UNICAMP), Campinas, SP, Brazil
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Meghavarnam AK, Janakiraman S. Solid state fermentation: An effective fermentation strategy for the production of L-asparaginase by Fusarium culmorum (ASP-87). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Trakarnpaiboon S, Srisuk N, Piyachomkwan K, Sakai K, Kitpreechavanich V. Enhanced production of raw starch degrading enzyme using agro-industrial waste mixtures by thermotolerant Rhizopus microsporus for raw cassava chip saccharification in ethanol production. Prep Biochem Biotechnol 2017. [PMID: 28636431 DOI: 10.1080/10826068.2017.1342264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In the present study, solid-state fermentation for the production of raw starch degrading enzyme was investigated by thermotolerant Rhizopus microsporus TISTR 3531 using a combination of agro-industrial wastes as substrates. The obtained crude enzyme was applied for hydrolysis of raw cassava starch and chips at low temperature and subjected to nonsterile ethanol production using raw cassava chips. The agro-industrial waste ratio was optimized using a simplex axial mixture design. The results showed that the substrate mixture consisting of rice bran:corncob:cassava bagasse at 8 g:10 g:2 g yielded the highest enzyme production of 201.6 U/g dry solid. The optimized condition for solid-state fermentation was found as 65% initial moisture content, 35°C, initial pH of 6.0, and 5 × 106 spores/mL inoculum, which gave the highest enzyme activity of 389.5 U/g dry solid. The enzyme showed high efficiency on saccharification of raw cassava starch and chips with synergistic activities of commercial α-amylase at 50°C, which promotes low-temperature bioethanol production. A high ethanol concentration of 102.2 g/L with 78% fermentation efficiency was achieved from modified simultaneous saccharification and fermentation using cofermentation of the enzymatic hydrolysate of 300 g raw cassava chips/L with cane molasses.
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Affiliation(s)
- Srisakul Trakarnpaiboon
- a Department of Microbiology, Faculty of Science , Kasetsart University , Chatuchak , Bangkok , Thailand
| | - Nantana Srisuk
- a Department of Microbiology, Faculty of Science , Kasetsart University , Chatuchak , Bangkok , Thailand
| | - Kuakoon Piyachomkwan
- b Cassava and Starch Technology Research Laboratory , National Center for Genetic Engineering and Biotechnology , Pathum Thani , Thailand
| | - Kenji Sakai
- c Laboratory of Soil Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Bioresource and Bioenvironmental Sciences , Kyushu University , Higashi-ku , Fukuoka , Japan
| | - Vichien Kitpreechavanich
- a Department of Microbiology, Faculty of Science , Kasetsart University , Chatuchak , Bangkok , Thailand
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Catalytic Profile and Amylolytic Studies of Toluene-Tolerant Enterococcus faecalis str. nov. mercadA7. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-016-2386-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Gajdhane SB, Bhagwat PK, Dandge PB. Response surface methodology-based optimization of production media and purification of α-galactosidase in solid-state fermentation by Fusarium moniliforme NCIM 1099. 3 Biotech 2016; 6:260. [PMID: 28330332 PMCID: PMC5148754 DOI: 10.1007/s13205-016-0575-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 11/23/2016] [Indexed: 11/30/2022] Open
Abstract
Response surface methodology was used to enhance the production of α-galactosidase from Fusarium moniliforme NCIM 1099 in solid-state fermentation. Plackett–Burman design was employed for selection of critical media constituents which were optimized by central composite rotatable design. Wheat bran, peptone and FeSO4·7H2O were identified as significant medium components using PB design. Further CCRD optimized medium components as wheat bran; 4.62 μg, peptone; 315.42 μg, FeSO4·7H2O; 9.04 μg. RSM methodological optimization increased the enzyme production from 13.17 to 207.33 U/g showing 15.74-fold enhancement. The α-galactosidase was purified by 70% fractionation followed by DEAE anion exchange column chromatography which yields 23.33% with 28.68-fold purification. The molecular weight of α-galactosidase was 57 kDa which was determined by SDS-PAGE analysis. Purified enzyme has optimum pH of 4.0 and was found to be stable in wide pH range of 3.0–9.0. Its optimum temperature was 50 °C, whereas its activity remains above 50% up to 2 h at 75 °C. Hg2+ was found to be a potent inhibitor and Mg2+ acted as an activator of enzyme. No significant change was observed in enzyme activity for galactose concentration, ranging from 1 to 100 mM. The Km values of enzyme for substrates p-nitrophenyl-α-d-galactopyranoside, melibiose and raffinose were 0.20, 1.36, and 3.66 mM, respectively. Low Km and stability to various physiological conditions of enzyme represents its potential which can be exploited in various industrial applications.
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Affiliation(s)
- Sanjivani B Gajdhane
- Department of Microbiology, Shivaji University, Kolhapur, 416004, Maharashtra, India
| | - Prashant K Bhagwat
- Department of Microbiology, Shivaji University, Kolhapur, 416004, Maharashtra, India
| | - Padma B Dandge
- Department of Biochemistry, Shivaji University, Kolhapur, 416004, Maharashtra, India.
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Uygut MA, Tanyildizi MŞ. Optimization of Alpha-Amylase Production by Bacillus amyloliquefaciens Grown on Orange Peels. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE 2016. [DOI: 10.1007/s40995-016-0077-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Valorization of bakery waste for biocolorant and enzyme production by Monascus purpureus. J Biotechnol 2016; 231:55-64. [DOI: 10.1016/j.jbiotec.2016.05.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/27/2016] [Accepted: 05/03/2016] [Indexed: 11/19/2022]
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Sethi BK, Nanda PK, Sahoo S. Characterization of biotechnologically relevant extracellular lipase produced by Aspergillus terreus NCFT 4269.10. Braz J Microbiol 2016; 47:143-9. [PMID: 26887237 PMCID: PMC4822761 DOI: 10.1016/j.bjm.2015.11.026] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 04/16/2015] [Indexed: 11/26/2022] Open
Abstract
Enzyme production by Aspergillus terreus NCFT 4269.10 was studied under liquid static surface and solid-state fermentation using mustard oil cake as a substrate. The maximum lipase biosynthesis was observed after incubation at 30 °C for 96 h. Among the domestic oils tested, the maximum lipase biosynthesis was achieved using palm oil. The crude lipase was purified 2.56-fold to electrophoretic homogeneity, with a yield of 8.44%, and the protein had a molecular weight of 46.3 kDa as determined by SDS-PAGE. Enzyme characterization confirmed that the purified lipase was most active at pH 6.0, temperature of 50 °C, and substrate concentration of 1.5%. The enzyme was thermostable at 60 °C for 1 h, and the optimum enzyme–substrate reaction time was 30 min. Sodium dodecyl sulfate and commercial detergents did not significantly affect lipase activity during 30-min incubation at 30 °C. Among the metal ions tested, the maximum lipase activity was attained in the presence of Zn2+, followed by Mg2+ and Fe2+. Lipase activity was not significantly affected in the presence of ethylenediaminetetraacetic acid, sodium lauryl sulfate and Triton X-100. Phenylmethylsulfonyl fluoride (1 mM) and the reducing, β-mercaptoethanol significantly inhibited lipase activity. The remarkable stability in the presence of detergents, additives, inhibitors and metal ions makes this lipase unique and a potential candidate for significant biotechnological exploitation.
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Affiliation(s)
- Bijay Kumar Sethi
- Microbiology Research Laboratory, P.G. Department of Botany, Utkal University, Vani Vihar, Bhubaneswar 751004, Odisha, India; MITS School of Biotechnology, 2 (P), Infocity, Patia, Chandaka Industrial Estate, Bhubaneswar 751024, Odisha, India.
| | | | - Santilata Sahoo
- Microbiology Research Laboratory, P.G. Department of Botany, Utkal University, Vani Vihar, Bhubaneswar 751004, Odisha, India
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Optimization of glucoamylase production by Mucor indicus, Mucor hiemalis, and Rhizopus oryzae through solid state fermentation / Mucor indicus, Mucor hiemalis, ve Rhizopus oryzae tarafından üretien glukoamilazın katı hal fermantasyonu ile optimizasyonu. ACTA ACUST UNITED AC 2016. [DOI: 10.1515/tjb-2016-0036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractObjective: Glucoamylase is a hydrolyzing enzyme with several industrial applications. Glucoamylase was produced via a solid state fermentation by three naturally occurring zygomycetes fungi of Mucor indicus, Mucor hiemalis, and Rhizopus oryzae on wheat bran.Methods: The effects of cultivation temperature, medium moisture content, and cultivation time on the enzyme production were investigated. Experiments were designed with an orthogonal central composite design on the three variables using response surface methodology (RSM).Results: For glucoamylase production, the optimum temperature and medium moisture content for the three fungi were 26.6°C and 71.8%, respectively. The optimum cultivation time for M. hiemalis and R. oryzae was 33.1 h, while it was 66.8 h for M. indicus. At optimum conditions, glucoamylase production by M. indicus, M. hiemalis, and R. oryzae was respectively 255.3, 272.3, and 1545.3 U per g dry substrate.Conclusion: R. oryzae is a suitable candidate for industrial production of glucoamylase.
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Das RK, Brar SK, Verma M. A fermentative approach towards optimizing directed biosynthesis of fumaric acid by Rhizopus oryzae 1526 utilizing apple industry waste biomass. Fungal Biol 2015; 119:1279-1290. [DOI: 10.1016/j.funbio.2015.10.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/18/2015] [Accepted: 10/02/2015] [Indexed: 01/16/2023]
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Cho K, Lee J, Han G, Kim NK, Bae H, Hwang S. Resource recovery using whey permeate to cultivate Phellinus linteus mycelium: Solid-state and submerged liquid fermentation. J Dairy Sci 2015; 98:6739-48. [PMID: 26233453 DOI: 10.3168/jds.2015-9631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 06/12/2015] [Indexed: 01/03/2023]
Abstract
The growth characteristics of Phellinus linteus mycelium were assessed and compared under solid-state fermentation (SSF) and submerged liquid fermentation (SLF) systems on whey permeate medium. Response surface methodology was used to investigate the growth rates of mycelia under various conditions of operating temperature (TO), initial pH, and substrate concentration ([S]). The optimal growth conditions of P. linteus mycelium were determined to be 26.1°C, pH 4.6, and 60.3g of lactose/L in the SSF system, and 29.0°C, pH 5.0, and 65.3g of lactose/L in the SLF system. The maximum growth rates were predicted to be 1.92 ± 0.01 mm/d in SSF and 192.1 ± 0.0mg/L per day in SLF. Random trials were conducted to experimentally validate the evaluated optimal conditions. The differences between the modeled and observed values were only 5.3% in the SSF system and 6.1% in the SLF system. Significant engineering factors differed between the fermentation techniques; TO was significant in both cultivation systems, whereas initial pH was significant in SSF but [S] was significant in SLF. Our findings can be used to guide the operation of the bioconversion process for cultivating P. linteus mycelium using whey permeate wastewater.
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Affiliation(s)
- Kyungjin Cho
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology, 39-1 Hawolgok-Dong, Seongbuk-Gu, Seoul 136-791, Republic of Korea
| | - Joonyeob Lee
- School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Gyuseong Han
- School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Na Kyung Kim
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 205 North Mathews Ave., Urbana 61801
| | - Hyokwan Bae
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology, 39-1 Hawolgok-Dong, Seongbuk-Gu, Seoul 136-791, Republic of Korea
| | - Seokhwan Hwang
- School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 790-784, Republic of Korea.
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El-Shishtawy RM, Mohamed SA, Asiri AM, Gomaa ABM, Ibrahim IH, Al-Talhi HA. Saccharification and hydrolytic enzyme production of alkali pre-treated wheat bran by Trichoderma virens under solid state fermentation. BMC Biotechnol 2015; 15:37. [PMID: 26018951 PMCID: PMC4445277 DOI: 10.1186/s12896-015-0158-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 05/01/2015] [Indexed: 12/01/2022] Open
Abstract
Background In continuation of our previously interest in the saccharification of agriculture wastes by Bacillus megatherium in solid state fermentation (SSF), we wish to report an investigation and comparative evaluation among Trichoderma sp. for the saccharification of four alkali-pretreated agricultural residues and production of hydrolytic enzymes, carboxymethyl cellulase (CMCase), filter paperase (FPase), pectinase (PGase) and xylanase (Xylase) in SSF. The optimization of the physiological conditions of production of hydrolytic enzymes and saccharification content from Trichoderma virens using alkali-pretreated wheat bran was the last goal. Methods The physico-chemical parameters of SSF include incubation time, incubation temperature, moisture content of the substrate, incubation pH, supplementation with carbon and nitrogen sources were optimized. Results Saccharification of different solid state fermentation sources wheat bran, date's seeds, grass and palm leaves, were tested for the production of fermentable sugar by Trichoderma sp. The maximum production of hydrolytic enzymes CMCase, FPase, PGase and Xylase and saccharification content were obtained on wheat bran. Time course, moisture content, optimum temperature, optimum pH, supplementation with carbon and nitrogen sources were optimized to achieve the maximum production of the hydrolytic enzymes, protein and total carbohydrate of T. virens using alkali pre-treated wheat bran. The maximum production of CMCase, FPase, PGase, Xylase, protein and carbohydrate content was recorded at 72 h of incubation, 50-70 % moisture, temperature 25-35 °C and pH 5. The influence of supplementary carbon and nitrogen sources was studied. While lactose and sucrose enhanced the activity of PGase from 79.2 to 582.9 and 632.6 U/g, starch inhibited all other enzymes. This was confirmed by maximum saccharification content. Among the nitrogen sources, yeast extract and urea enhanced the saccharification content and CMCase, PGase and Xylase. Conclusions The results of this study indicated that alkali pre-treated wheat bran was a better substrate for saccharification and production of hydrolytic enzymes CMCase, FPase, PGase and xylase by T. virens compared to other alkali-pretreated agricultural residues tested.
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Affiliation(s)
- Reda M El-Shishtawy
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
| | - Saleh A Mohamed
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia. .,The Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Abu-Bakr M Gomaa
- Biology Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
| | - Ibrahim H Ibrahim
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
| | - Hasan A Al-Talhi
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
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Rodríguez de Olmos A, Bru E, Garro MS. Optimization of fermentation parameters to study the behavior of selected lactic cultures on soy solid state fermentation. Int J Food Microbiol 2015; 196:16-23. [PMID: 25498472 DOI: 10.1016/j.ijfoodmicro.2014.11.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 11/11/2014] [Accepted: 11/27/2014] [Indexed: 01/25/2023]
Abstract
The use of solid fermentation substrate (SSF) has been appreciated by the demand for natural and healthy products. Lactic acid bacteria and bifidobacteria play a leading role in the production of novel functional foods and their behavior is practically unknown in these systems. Soy is an excellent substrate for the production of functional foods for their low cost and nutritional value. The aim of this work was to optimize different parameters involved in solid state fermentation (SSF) using selected lactic cultures to improve soybean substrate as a possible strategy for the elaboration of new soy food with enhanced functional and nutritional properties. Soy flour and selected lactic cultures were used under different conditions to optimize the soy SSF. The measured responses were bacterial growth, free amino acids and β-glucosidase activity, which were analyzed by applying response surface methodology. Based on the proposed statistical model, different fermentation conditions were raised by varying the moisture content (50-80%) of the soy substrate and temperature of incubation (31-43°C). The effect of inoculum amount was also investigated. These studies demonstrated the ability of selected strains (Lactobacillus paracasei subsp. paracasei and Bifidobacterium longum) to grow with strain-dependent behavior on the SSF system. β-Glucosidase activity was evident in both strains and L. paracasei subsp. paracasei was able to increase the free amino acids at the end of fermentation under assayed conditions. The used statistical model has allowed the optimization of fermentation parameters on soy SSF by selected lactic strains. Besides, the possibility to work with lower initial bacterial amounts to obtain results with significant technological impact was demonstrated.
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Affiliation(s)
- A Rodríguez de Olmos
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, San Miguel de Tucumán, T4000ILC Tucumán, Argentina
| | - E Bru
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, San Miguel de Tucumán, T4000ILC Tucumán, Argentina
| | - M S Garro
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, San Miguel de Tucumán, T4000ILC Tucumán, Argentina.
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Müller M, Prade RA, Segato F, Atiyeh HK, Wilkins MR. Continuous xylanase production with Aspergillus nidulans under pyridoxine limitation using a trickle bed reactor. BIORESOURCE TECHNOLOGY 2015; 188:219-225. [PMID: 25683507 DOI: 10.1016/j.biortech.2015.01.085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/19/2015] [Accepted: 01/20/2015] [Indexed: 06/04/2023]
Abstract
A trickle bed reactor (TBR) with recycle was designed and tested using Aspergillus nidulans with a pyridoxine marker and over-expressing/secreting recombinant client xylanase B (XynB). The pyridoxine marker prevented the fungus from synthesizing its own pyridoxine and fungus was unable to grow when no pyridoxine was present in the medium; however, enzyme production was unaffected. Uncontrolled mycelia growth that led to clogging of the TBR was observed when fungus without a pyridoxine marker was used for XynB production. Using the fungus with pyridoxine marker, the TBR was operated continuously for 18 days and achieved a XynB output of 41 U/ml with an influent and effluent flow rate of 0.5 ml/min and a recycle flow rate of 56 ml/min. Production yields in the TBR were 1.4 times greater than a static tray culture and between 1.1 and 67 times greater than yields for SSF enzyme production stated in the literature.
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Affiliation(s)
- Michael Müller
- Department of Biosystems Engineering, Oklahoma State University, 111 Agriculture Hall, Stillwater, OK 74078, USA.
| | - Rolf A Prade
- Department of Microbiology and Molecular Genetics, Oklahoma State University, 307 Life Sciences East, Stillwater, OK 74078, USA.
| | - Fernando Segato
- Department of Microbiology and Molecular Genetics, Oklahoma State University, 307 Life Sciences East, Stillwater, OK 74078, USA
| | - Hasan K Atiyeh
- Department of Biosystems Engineering, Oklahoma State University, 111 Agriculture Hall, Stillwater, OK 74078, USA.
| | - Mark R Wilkins
- Department of Biosystems Engineering, Oklahoma State University, 111 Agriculture Hall, Stillwater, OK 74078, USA.
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Chatterjee J, Giri S, Maity S, Sinha A, Ranjan A, Rajshekhar , Gupta S. Production and characterization of thermostable alkaline protease ofBacillus subtilis(ATCC 6633) from optimized solid-state fermentation. Biotechnol Appl Biochem 2015; 62:709-18. [DOI: 10.1002/bab.1309] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 10/13/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Joyee Chatterjee
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
| | - Sudipta Giri
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
| | - Sujan Maity
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
| | - Ankan Sinha
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
| | - Ashish Ranjan
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
| | - Rajshekhar
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
| | - Suvroma Gupta
- Department of Biotechnology; Haldia Institute of Technology, HIT Campus; Purba Medinipur India
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Songulashvili G, Spindler D, Jimenéz-Tobón GA, Jaspers C, Kerns G, Penninckx MJ. Production of a high level of laccase by submerged fermentation at 120-L scale of Cerrena unicolor C-139 grown on wheat bran. C R Biol 2015; 338:121-5. [PMID: 25573330 DOI: 10.1016/j.crvi.2014.12.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/02/2014] [Accepted: 12/02/2014] [Indexed: 11/26/2022]
Abstract
Submerged fermentation in a stirred bioreactor of the white rot fungus Cerrena unicolor C-139 was done at a 120-L scale in the presence of wheat bran as a cheap lignocellulosic substrate for fungus growth and laccase production. Enzyme monitoring showed that laccase production started after 2 days of cultivation, attaining a maximum activity of 416.4 U·mL(-1) at day 12 of fermentation. After treatment of culture liquid by successive micro- and ultrafiltration (5kDa), a liquid concentrate containing 22203176 units of laccase was obtained. Obtaining large amount of laccase is essential for various industrial applications, including detoxification of industrial effluents, textile and petrochemical industries, polymer synthesis, bioremediation of contaminated area, stabilization of beverages, production of cosmetics, manufacture of anti-cancer drugs, and nanobiotechnology. The cultivation method and the fungal strain used here provided a substantial amount of enzyme produced at a price lower than 0.01 € cent/unit enzyme.
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Affiliation(s)
- George Songulashvili
- Laboratoire de physiologie et écologie microbienne, faculté des sciences, École interfacultaire des bioingénieurs, Université libre de Bruxelles, c/o ISP, 642, rue Engeland, 1180 Brussels, Belgium; École polytechnique, Université libre de Bruxelles, 50, avenue Franklin-Roosevelt, 1050 Brussels, Belgium.
| | - Daniel Spindler
- Saxon Institute for Applied Biotechnology (SIAB), Permoserstraße 15, 04318 Leipzig, Germany
| | - Gloria A Jimenéz-Tobón
- Laboratoire de physiologie et écologie microbienne, faculté des sciences, École interfacultaire des bioingénieurs, Université libre de Bruxelles, c/o ISP, 642, rue Engeland, 1180 Brussels, Belgium
| | - Charles Jaspers
- Laboratoire de physiologie et écologie microbienne, faculté des sciences, École interfacultaire des bioingénieurs, Université libre de Bruxelles, c/o ISP, 642, rue Engeland, 1180 Brussels, Belgium
| | - Gerhard Kerns
- Saxon Institute for Applied Biotechnology (SIAB), Permoserstraße 15, 04318 Leipzig, Germany
| | - Michel J Penninckx
- Laboratoire de physiologie et écologie microbienne, faculté des sciences, École interfacultaire des bioingénieurs, Université libre de Bruxelles, c/o ISP, 642, rue Engeland, 1180 Brussels, Belgium; École polytechnique, Université libre de Bruxelles, 50, avenue Franklin-Roosevelt, 1050 Brussels, Belgium
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Tsakona S, Kopsahelis N, Chatzifragkou A, Papanikolaou S, Kookos IK, Koutinas AA. Formulation of fermentation media from flour-rich waste streams for microbial lipid production by Lipomyces starkeyi. J Biotechnol 2014; 189:36-45. [DOI: 10.1016/j.jbiotec.2014.08.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/06/2014] [Accepted: 08/12/2014] [Indexed: 01/26/2023]
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Pareek N, Ghosh S, Singh R, Vivekanand V. Mustard oil cake as an inexpensive support for production of chitin deacetylase by Penicillium oxalicum SAEM-51 under solid-state fermentation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2014. [DOI: 10.1016/j.bcab.2014.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Niyonzima FN, More SS. Detergent-Compatible Bacterial Amylases. Appl Biochem Biotechnol 2014; 174:1215-1232. [DOI: 10.1007/s12010-014-1144-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 08/06/2014] [Indexed: 10/24/2022]
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40
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Improvement of Aspergillus oryzae NRRL 3484 by mutagenesis and optimization of culture conditions in solid-state fermentation for the hyper-production of extracellular cellulase. Antonie Van Leeuwenhoek 2014; 106:853-64. [DOI: 10.1007/s10482-014-0255-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 08/05/2014] [Indexed: 11/26/2022]
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Solid fermentation of wheat bran for hydrolytic enzymes production and saccharification content by a local isolate Bacillus megatherium. BMC Biotechnol 2014; 14:29. [PMID: 24758479 PMCID: PMC4004419 DOI: 10.1186/1472-6750-14-29] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 04/16/2014] [Indexed: 11/10/2022] Open
Abstract
BACK GROUND For enzyme production, the costs of solid state fermentation (SSF) techniques were lower and the production higher than submerged cultures. A large number of fungal species was known to grow well on moist substrates, whereas many bacteria were unable to grow under this condition. Therefore, the aim of this study was to isolate a highly efficient strain of Bacillus sp utilizing wheat bran in SSF and optimizing the enzyme production and soluble carbohydrates. RESULTS A local strain Bacillus megatherium was isolated from dung sheep. The maximum production of pectinase, xylanase and α-amylase, and saccharification content (total soluble carbohydrates and reducing sugars) were obtained by application of the B. megatherium in SSF using wheat bran as compared to grasses, palm leaves and date seeds. All enzymes and saccharification content exhibited their maximum production during 12-24 h, at the range of 40-80% moisture content of wheat bran, temperature 37-45°C and pH 5-8. An ascending repression of pectinase production was observed by carbon supplements of lactose, glucose, maltose, sucrose and starch, respectively. All carbon supplements improved the production of xylanase and α-amylase, except of lactose decreased α-amylase production. A little increase in the yield of total reducing sugars was detected for all carbon supplements. Among the nitrogen sources, yeast extract induced a significant repression to all enzyme productivity. Sodium nitrate, urea and ammonium chloride enhanced the production of xylanase, α-amylase and pectinase, respectively. Yeast extract, urea, ammonium sulphate and ammonium chloride enhanced the productivity of reducing sugars. CONCLUSIONS The optimization of enzyme production and sccharification content by B. megatherium in SSF required only adjustment of incubation period and temperature, moisture content and initial pH. Wheat bran supplied enough nutrients without any need for addition of supplements of carbon and nitrogen sources.
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Roohi, Kuddus M. Bio-statistical approach for optimization of cold-active α-amylase production by novel psychrotolerant M. foliorum GA2 in solid state fermentation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2014. [DOI: 10.1016/j.bcab.2013.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sahoo RK, Subudhi E, Kumar M. Quantitative approach to track lipase producing Pseudomonas sp. S1 in nonsterilized solid state fermentation. Lett Appl Microbiol 2014; 58:610-6. [PMID: 24527988 DOI: 10.1111/lam.12235] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 02/10/2014] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
Abstract
UNLABELLED Proliferation of the inoculated Pseudomonas sp. S1 is quantitatively evaluated using ERIC-PCR during the production of lipase in nonsterile solid state fermentation an approach to reduce the cost of enzyme production. Under nonsterile solid state fermentation with olive oil cake, Pseudomonas sp. S1 produced 57·9 IU g(-1) of lipase. DNA fingerprints of unknown bacterial isolates obtained on Bushnell Haas agar (BHA) + tributyrin exactly matched with that of Pseudomonas sp. S1. Using PCR-based enumeration, population of Pseudomonas sp. S1 was proliferated from 7·6 × 10(4) CFU g(-1) after 24 h to 4·6 × 10(8) CFU g(-1) after 96 h, which tallied with the maximum lipase activity as compared to control. Under submerged fermentation (SmF), Pseudomonas sp. S1 produced maximum lipase (49 IU ml(-1) ) using olive oil as substrate, while lipase production was 9·754 IU ml(-1) when Pseudomonas sp. S1 was grown on tributyrin. Optimum pH and temperature of the crude lipase was 7·0 and 50°C. Crude enzyme activity was 71·2% stable at 50°C for 360 min. Pseudomonas sp. S1 lipase was also stable in methanol showing 91·6% activity in the presence of 15% methanol, whereas 75·5 and 51·1% of activity were retained in the presence of 20 and 30% methanol, respectively. Thus, lipase produced by Pseudomonas sp. S1 is suitable for the production of biodiesel as well as treatment of oily waste water. SIGNIFICANCE AND IMPACT OF STUDY This study presents the first report on the production of thermophilic organic solvent tolerant lipase using agro-industry waste in nonsterile solid state fermentation. Positive correlation between survival of Pseudomonas sp. S1 and lipase production under nonsterile solid state fermentation was established, which may emphasize the need to combine molecular tools and solid state fermentation in future studies. Our study brings new insights into the lipase production in cost-effective manner, which is an industrially relevant approach.
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Affiliation(s)
- R K Sahoo
- Centre of Biotechnology, Siksha O Anusandhan University, Bhubaneswar, India
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44
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Vijayaraghavan P, Prakash Vincent SG. Medium optimization for the production of fibrinolytic enzyme by Paenibacillus sp. IND8 using response surface methodology. ScientificWorldJournal 2014; 2014:276942. [PMID: 24523635 PMCID: PMC3913018 DOI: 10.1155/2014/276942] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 10/08/2013] [Indexed: 11/17/2022] Open
Abstract
Production of fibrinolytic enzyme by a newly isolated Paenibacillus sp. IND8 was optimized using wheat bran in solid state fermentation. A 2(5) full factorial design (first-order model) was applied to elucidate the key factors as moisture, pH, sucrose, yeast extract, and sodium dihydrogen phosphate. Statistical analysis of the results has shown that moisture, sucrose, and sodium dihydrogen phosphate have the most significant effects on fibrinolytic enzymes production (P < 0.05). Central composite design (CCD) was used to determine the optimal concentrations of these three components and the experimental results were fitted with a second-order polynomial model at 95% level (P < 0.05). Overall, 4.5-fold increase in fibrinolytic enzyme production was achieved in the optimized medium as compared with the unoptimized medium.
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Affiliation(s)
- Ponnuswamy Vijayaraghavan
- International Centre for Nanobiotechnology, Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamil Nadu 629 502, India
| | - Samuel Gnana Prakash Vincent
- International Centre for Nanobiotechnology, Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamil Nadu 629 502, India
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Božić N, Slavić MŠ, Gavrilović A, Vujčić Z. Production of raw-starch-digesting α-amylase isoform from Bacillus sp. under solid-state fermentation and biochemical characterization. Bioprocess Biosyst Eng 2013; 37:1353-60. [PMID: 24385152 DOI: 10.1007/s00449-013-1105-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 12/02/2013] [Indexed: 11/30/2022]
Abstract
α-Amylase production by solid-state fermentation of different Bacillus sp. was studied previously on different fermentation media. However, no study has been reported on the influence of selected media on expression of desired amylase isoforms such as raw-starch-digesting amylase (RSDA). In this paper, the influence of different inexpensive and available agro-resources as solid media (corn, wheat and triticale) on α-amylase isoform induction from three wild-type Bacillus sp., selected among one hundred strains tested, namely 9B, 12B and 24A was investigated. For all three strains, tested amylases were detected in the multiple forms; however, number and intensity of each form differed depending on the solid media used for growth. To determine which isoform from Bacillus sp. 12B was RSDA, the suspected isoform was purified. The optimum pH for the purified α-amylase isoform was 6.0-8.0, while the optimum temperature was 60-90 °C. Isoform was considerably thermostable and Ca(2+)-independent, and actually the only α-amylase active towards raw starch. Purification and characterization of RSDA showed that not all of the solid media tested induced RSDA. From an economic point of view, it might be significant to obtain pure isoenzyme for potential use in the raw-starch hydrolysis, since it was 5 times more efficient in raw corn starch hydrolysis than the crude amylase preparation.
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Affiliation(s)
- Nataša Božić
- Centre of Chemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia,
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Handa CL, Couto UR, Vicensoti AH, Georgetti SR, Ida EI. Optimisation of soy flour fermentation parameters to produce β-glucosidase for bioconversion into aglycones. Food Chem 2013; 152:56-65. [PMID: 24444906 DOI: 10.1016/j.foodchem.2013.11.101] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 10/16/2013] [Accepted: 11/19/2013] [Indexed: 12/14/2022]
Abstract
The solid state fermentation (SSF) parameters of defatted soybean flour (DSF) with Aspergillus oryzae IOC 3999/1998 or Monascus purpureus NRRL 1992 was evaluated using a rotational central composite experimental design to optimise the production of β-glucosidase and convert glycosidic isoflavones in aglycones. Variables investigated were initial pH of DSF, volume of water added to 10 g of DSF and incubation temperature. β-Glucosidase activity was measured using the synthetic substrate, p-nitrophenyl-β-D-glucoside. The content of isoflavones was determinate by ultra performance liquid chromatography. The highest production of β-glucosidase for both strains occurred when adding 10 mL of water to the DSF, incubating at 30 °C and using 6.0 as the initial DSF pH. A. oryzae IOC 3999/1998 expressed β-glucosidase activity at 10.7 times higher than M. purpureus NRRL 1992. The DSF fermentation was more efficient in converting isoflavones with M. purpureus NRRL 1992.
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Affiliation(s)
- C L Handa
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Estadual de Londrina, 86057-970 Londrina, Paraná, Brazil
| | - U R Couto
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Estadual de Londrina, 86057-970 Londrina, Paraná, Brazil
| | - A H Vicensoti
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Estadual de Londrina, 86057-970 Londrina, Paraná, Brazil
| | - S R Georgetti
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina, 86057-970 Londrina, Paraná, Brazil
| | - E I Ida
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Estadual de Londrina, 86057-970 Londrina, Paraná, Brazil.
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Dilipkumar M, Rajasimman M, Rajamohan N. Utilization of copra waste for the solid state fermentative production of inulinase in batch and packed bed reactors. Carbohydr Polym 2013; 102:662-8. [PMID: 24507333 DOI: 10.1016/j.carbpol.2013.11.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 10/25/2013] [Accepted: 11/02/2013] [Indexed: 10/26/2022]
Abstract
In this study, screening and optimization of nutrients for inulinase production using copra waste has been studied. Plackett-Burman Design (PBD) was employed to screen the significant nutrients for inulinase production. Response surface methodology (RSM) was used to evaluate the effects of nutrient components in the medium. The second order regression equation provides the inulinase activity as the function of K2HPO4, ZnSO4 · 7H2O and soya bean cake. The optimum conditions are: K2HPO4--0.0047 g/gds, ZnSO4 · 7H2O - 0.02677 g/gds and soya bean cake--0.06288 g/gds. At these optimized conditions, experiments were performed in packed bed bioreactor to optimize the process variables like air flow rate, packing density, particle size and moisture content. The optimum conditions were: air flow rate--0.76 L/min, packing density--38 g/L, particle size--10/14 mesh and moisture content--60%. At the optimized conditions, a maximum inulinase production of 239 U/gds was achieved.
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Affiliation(s)
- M Dilipkumar
- Department of Chemical Engineering, Annamalai University, Annamalainagar 608002, Tamilnadu, India.
| | - M Rajasimman
- Department of Chemical Engineering, Annamalai University, Annamalainagar 608002, Tamilnadu, India
| | - N Rajamohan
- Department of Chemical Engineering, Sohar University, Sohar, Oman
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Improvement of β-glucosidase production by co-culture of Aspergillus niger and A. oryzae under solid state fermentation through feeding process. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0696-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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49
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Ghosh S, Murthy S, Govindasamy S, Chandrasekaran M. Optimization of L-asparaginase production by Serratia marcescens (NCIM 2919) under solid state fermentation using coconut oil cake. ACTA ACUST UNITED AC 2013. [DOI: 10.1186/2043-7129-1-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Background
The present study focused on utilization of agrowaste byproducts generated from oil mill for L-asparaginase enzyme production using Serratia marcescens under solid state fermentation. Classical and statistical methods were employed to optimize the process variables and the results were compared.
Results
The classical one factor at a time (OFAT) and response surface methodology (RSM) are employed to optimize the fermentation process. When used as the sole carbon source in SSF, coconut oil cake (COC) showed maximum enzyme production. The optimal values of substrate amount, initial moisture content, pH and temperature were found to be 6 g, 40%, 6 and 35°C respectively under classical optimization method with maximum enzyme activity of 3.87 (U gds-1). Maximum enzyme activity of 5.86 U gds-1 was obtained at the predicted optimal conditions of substrate amount 7.6 g of COC, initial moisture content of substrate 50%, temperature 35.5°C and pH 7.4. Validation results proved that a good relation existed between the experimental and the predicted model.
Conclusions
RSM optimization approach enhances the enzyme production to 33% when compared to classical method. Utilization of coconut oil cake as a low cost substrate in SSF for L-asparaginase production makes the process economical and also reduces the environmental pollution by converting the oil mill solid waste into a useful bioproduct.
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Gassara F, Ajila CM, Brar SK, Tyagi RD, Verma M, Valero J. Influence of aeration and agitation modes on solid-state fermentation of apple pomace waste byPhanerochaete chrysosporiumto produce ligninolytic enzymes and co-extract polyphenols. Int J Food Sci Technol 2013. [DOI: 10.1111/ijfs.12194] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fatma Gassara
- INRS-ETE; Université du Québec; 490 Rue de la Couronne Québec QC G1K 9A9 Canada
| | | | - Satinder Kaur Brar
- INRS-ETE; Université du Québec; 490 Rue de la Couronne Québec QC G1K 9A9 Canada
| | | | - Mausam Verma
- CO 2 Solutions Inc. 2300; rue Jean-Perrin Québec Québec G2C 1T9 Canada
| | - José Valero
- INRS-ETE; Université du Québec; 490 Rue de la Couronne Québec QC G1K 9A9 Canada
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