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Cao C, Zhu Z, Xu C, Gong W, Zhou Y, Yan L, Hu Z, Xie C, Peng Y. Improving saccharification of ramie stalks by synergistic effect of in-house cellulolytic enzymes consortium. AMB Express 2022; 12:119. [PMID: 36114307 PMCID: PMC9481857 DOI: 10.1186/s13568-022-01453-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 08/18/2022] [Indexed: 11/24/2022] Open
Abstract
The high cost of cellulase is one of the main obstacles hindering the large-scale biorefining of lignocellulosic biomass. Therefore, developing efficient method for preparation of cellulase is promising. In the present study, the production of cellulase by Trichoderma reesei, Trichoderma harzianum, and Aspergillus niger was optimized, and the synergistic effect of these cellulase on enzymatic hydrolysis of pretreated ramie stalks was also evaluated. The maximum CMCase (Carboxymethyl Cellulase) and filter paper activity (FPA) produced by T. reesei reached to 3.12 IU/mL and 0.13 IU/mL, respectively. The maximum activities of CMCase (3.68 IU/mL), FPA (0.04 IU/mL) and β-glucosidase (8.44 IU/mL) were obtained from A. niger. The results also showed that under the premise of the same FPA activity, the contribution of β-glucosidase activity to yield of reducing sugar was greater than that of CMCase. Besides, cellulase produced by T. reesei and A. niger had the best synergistic effect on enzymatic hydrolysis of pretreated ramie stalks. The highest reducing sugars yield (417 mg/g dry substrate) was achieved when enzyme cocktail was prepared at the ratio of 1:1, which was 1.36–3.35 folds higher than that of different single enzymes. The present research has provided a novel method for efficient preparation of enzymes consortium for enzymatic hydrolysis of ramie stalks.
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2
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Release characteristic and mechanism of bound polyphenols from insoluble dietary fiber of navel orange peel via mixed solid-state fermentation with Trichoderma reesei and Aspergillus niger. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113387] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3
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Dharma Patria R, Rehman S, Vuppaladadiyam AK, Wang H, Lin CSK, Antunes E, Leu SY. Bioconversion of food and lignocellulosic wastes employing sugar platform: A review of enzymatic hydrolysis and kinetics. BIORESOURCE TECHNOLOGY 2022; 352:127083. [PMID: 35364238 DOI: 10.1016/j.biortech.2022.127083] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Bioenergy and biochemicals can be sustainably produced through fermentation and anaerobic digestion (AD). However, this bioconversion processes could be more economical if the hydrolysis rates of substrates in bioreactors can be accelerated. In this review, the feasibilities of including enzymatic hydrolysis (EH) in various bioconversion systems were studied to facilitate the biological synergy. The reaction kinetics of EH in bioconversion systems comparing pretreated lignocellulosic biomass (LCB) and food waste (FW) substrates were reviewed. Possible strategies to improve the hydrolysis efficiency were explored, including co-cultivation during enzyme production and replacement of pure enzyme with on-site produced fungal mash during EH. Key insights into improvement of current AD and fermentation technologies were summarized and further formed into suggestions of future directions in techno-economic feasibility of biorefinery using mixture of the first-generation food crop feedstock with FW; and/or co-digestion of FW with LCB.
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Affiliation(s)
- Raffel Dharma Patria
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Shazia Rehman
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Arun K Vuppaladadiyam
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Huaimin Wang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Hong Kong
| | - Elsa Antunes
- College of Science and Engineering, James Cook University, Australia
| | - Shao-Yuan Leu
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong; Research Institute for Future Food, The Hong Kong Polytechnic University, Hong Kong; Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hong Kong.
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4
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de Souza MF, da Silva Bon EP, da Silva AS. Production of cellulases and β-glucosidases by Trichoderma reesei Rut C30 using steam-pretreated sugarcane bagasse: an integrated approach for onsite enzyme production. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-021-00114-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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de Vries RP, Mäkelä MR. Genomic and Postgenomic Diversity of Fungal Plant Biomass Degradation Approaches. Trends Microbiol 2020; 28:487-499. [PMID: 32396827 DOI: 10.1016/j.tim.2020.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/15/2019] [Accepted: 01/16/2020] [Indexed: 10/25/2022]
Abstract
Plant biomass degradation by fungi is a widely studied and applied field of science, due to its relevance for the global carbon cycle and many biotechnological applications. Before the genome era, many of the in-depth studies focused on a relatively small number of species, whereas now, many species can be addressed in detail, revealing the large variety in the approach used by fungi to degrade plant biomass. This variation is found at many levels and includes genomic adaptation to the preferred biomass component, but also different approaches to degrade this component by diverse sets of activities encoded in the genome. Even larger differences have been observed using transcriptome and proteome studies, even between closely related species, suggesting a high level of adaptation in individual species. A better understanding of the drivers of this diversity could be highly valuable in developing more efficient biotechnology approaches for the enzymatic conversion of plant biomass.
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Affiliation(s)
- Ronald P de Vries
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands.
| | - Miia R Mäkelä
- Department of Microbiology, University of Helsinki, Helsinki, Finland
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6
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Huang LF, Liu YK, Su SC, Lai CC, Wu CR, Chao TJ, Yang YH. Genetic engineering of transitory starch accumulation by knockdown of OsSEX4 in rice plants for enhanced bioethanol production. Biotechnol Bioeng 2020; 117:933-944. [PMID: 31889302 DOI: 10.1002/bit.27262] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/19/2019] [Accepted: 12/23/2019] [Indexed: 11/07/2022]
Abstract
Rice straw, a common agricultural waste, is used as a potential feedstock for bioethanol production. Currently, bioethanol is made mostly from the microbial fermentation of starch-containing raw materials. Therefore, genetically engineered starch-excess rice straw through interference of starch degradation as a potential strategy to enhance bioethanol production was evaluated in this study. Arabidopsis Starch Excess 4 (SEX4) encodes a chloroplast-localized glucan phosphatase and plays a role in transitory starch degradation. Despite the identification of a SEX4 homolog in rice, OsSEX4, its biological function remains uncertain. Ectopic expression of OsSEX4 complementary DNA complemented the leaf starch-excess phenotype of the Arabidopsis sex4-4 mutant. OsSEX4-knockdown transgenic rice plants were generated using the RNA interference approach. Starch accumulation was higher in OsSEX4-knockdown suspension-cultured cells, leaves, and rice straw compared with the wild type, suggesting that OsSEX4 plays an important role in degradation of transitory starch. The OsSEX4-knockdown rice plants showed normal plant growth and no yield penalty. Starch-excess OsSEX4-knockdown rice straw used as feedstock for fermentation resulted in improved bioethanol yield, with a 50% increase in ethanol production in a vertical mass-flow type bioreactor, compared with that of the wild-type straw.
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Affiliation(s)
- Li-Fen Huang
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Yu-Kuo Liu
- Department of Chemical and Materials Bioengineering, Chang Gung University, Taoyuan, Taiwan
| | - Sung-Chieh Su
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Chih-Chang Lai
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Ching-Rong Wu
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Tai-Jang Chao
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Yung-Hsing Yang
- Department of Chemical and Materials Bioengineering, Chang Gung University, Taoyuan, Taiwan
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7
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Patyshakuliyeva A, Falkoski DL, Wiebenga A, Timmermans K, de Vries RP. Macroalgae Derived Fungi Have High Abilities to Degrade Algal Polymers. Microorganisms 2019; 8:E52. [PMID: 31888103 PMCID: PMC7023191 DOI: 10.3390/microorganisms8010052] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/13/2019] [Accepted: 12/26/2019] [Indexed: 12/21/2022] Open
Abstract
Marine fungi associated with macroalgae are an ecologically important group that have a strong potential for industrial applications. In this study, twenty-two marine fungi isolated from the brown seaweed Fucus sp. were examined for their abilities to produce algal and plant biomass degrading enzymes. Growth of these isolates on brown and green algal biomass revealed a good growth, but no preference for any specific algae. Based on the analysis of enzymatic activities, macroalgae derived fungi were able to produce algae specific and (hemi-)cellulose degrading enzymes both on algal and plant biomass. However, the production of algae specific activities was lower than the production of cellulases and xylanases. These data revealed the presence of different enzymatic approaches for the degradation of algal biomass by macroalgae derived fungi. In addition, the results of the present study indicate our poor understanding of the enzymes involved in algal biomass degradation and the mechanisms of algal carbon source utilization by marine derived fungi.
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Affiliation(s)
- Aleksandrina Patyshakuliyeva
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; (A.P.); (D.L.F.); (A.W.)
| | - Daniel L. Falkoski
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; (A.P.); (D.L.F.); (A.W.)
| | - Ad Wiebenga
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; (A.P.); (D.L.F.); (A.W.)
| | - Klaas Timmermans
- NIOZ Royal Netherlands Institute for Sea Research, Landsdiep 4, 1797 SZ ′t Horntje, The Netherlands;
| | - Ronald P. de Vries
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; (A.P.); (D.L.F.); (A.W.)
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8
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Wu C, Chen Y, Huang X, Sun S, Luo J, Lu Z, Wang W, Ma Y. An efficient shortened genetic transformation strategy for filamentous fungus Trichoderma reesei. J GEN APPL MICROBIOL 2019; 65:301-307. [PMID: 31231078 DOI: 10.2323/jgam.2019.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The filamentous fungus Trichoderma reesei is one of the most important fungi for the production of cellulases and xylanases, which can be used for biofuel production from lignocellulose. We aimed to develop an effective selection marker system for more extensive functional genomic studies in the fungus T. reesei, and to construct better industrial transformants for producing cellulases. Here, we present a novel effective G418 selection marker to use a codon-optimized neomycin phosphotransferase II gene nptII to transform T. reesei. We developed an effective and erasable selection marker, lcNG, and a combined genetic transformation system for gene manipulation in T. reesei using a two-Agrobacterium-mediated transformation method. This transformation strategy combines two steps in the transformation protocol, which saves 15-30-day's time. The system could be a useful tool for the genetic engineering of T. reesei.
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Affiliation(s)
- Chuan Wu
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Yumeng Chen
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Xiaoxue Huang
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Shishuai Sun
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Jinnan Luo
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Zhiwen Lu
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Wei Wang
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
| | - Yushu Ma
- State Key Lab of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology
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9
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Mäkelä MR, Aguilar-Pontes MV, van Rossen-Uffink D, Peng M, de Vries RP. The fungus Aspergillus niger consumes sugars in a sequential manner that is not mediated by the carbon catabolite repressor CreA. Sci Rep 2018; 8:6655. [PMID: 29703914 PMCID: PMC5923239 DOI: 10.1038/s41598-018-25152-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 04/17/2018] [Indexed: 11/09/2022] Open
Abstract
In nature, the fungus Aspergillus niger degrades plant biomass polysaccharides to monomeric sugars, transports them into its cells, and uses catabolic pathways to convert them into biochemical building blocks and energy. We show that when grown in liquid cultures, A. niger takes up plant-biomass derived sugars in a largely sequential manner. Interestingly, this sequential uptake was not mediated by the fungal general carbon catabolite repressor protein CreA. Furthermore, transcriptome analysis strongly indicated that the preferential use of the monomeric sugars is arranged at the level of transport, but it is not reflected in transcriptional regulation of sugar catabolism. Therefore, the results indicate that the regulation of sugar transport and catabolism are separate processes in A. niger.
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Affiliation(s)
- Miia R Mäkelä
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands.,Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - María Victoria Aguilar-Pontes
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Diana van Rossen-Uffink
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Mao Peng
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Ronald P de Vries
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands. .,Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland.
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10
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Maehara L, Pereira SC, Silva AJ, Farinas CS. One-pot strategy for on-site enzyme production, biomass hydrolysis, and ethanol production using the whole solid-state fermentation medium of mixed filamentous fungi. Biotechnol Prog 2018; 34:671-680. [PMID: 29388389 DOI: 10.1002/btpr.2619] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/29/2018] [Indexed: 11/05/2022]
Abstract
The efficient use of renewable lignocellulosic feedstocks to obtain biofuels and other bioproducts is a key requirement for a sustainable biobased economy. This requires novel and effective strategies to reduce the cost contribution of the cellulolytic enzymatic cocktails needed to convert the carbohydrates into simple sugars, in order to make large-scale commercial processes economically competitive. Here, we propose the use of the whole solid-state fermentation (SSF) medium of mixed filamentous fungi as an integrated one-pot strategy for on-site enzyme production, biomass hydrolysis, and ethanol production. Ten different individual and mixed cultivations of commonly used industrial filamentous fungi (Aspergillus niger, Aspergillus oryzae, Trichoderma harzianum, and Trichoderma reesei) were performed under SSF and the whole media (without the extraction step) were used in the hydrolysis of pretreated sugarcane bagasse. The cocultivation of T. reesei with A. oryzae increased the amount of glucose released by around 50%, compared with individual cultivations. The release of glucose and reducing sugars achieved using the whole SSF medium was around 3-fold higher than obtained with the enzyme extract. The addition of soybean protein (0.5% w/w) during the hydrolysis reaction further significantly improved the saccharification performance by blocking the lignin and avoiding unproductive adsorption of enzymes. The results of the alcoholic fermentation validated the overall integrated process, with a volumetric ethanol productivity of 4.77 g/L.h, representing 83.5% of the theoretical yield. These findings demonstrate the feasibility of the proposed one-pot integrated strategy using the whole SSF medium of mixed filamentous fungi for on-site enzymes production, biomass hydrolysis, and ethanol production. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:671-680, 2018.
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Affiliation(s)
- Larissa Maehara
- Embrapa Instrumentation, Rua XV de Novembro 1452, São Carlos, SP, 13561-260, Brazil.,Graduate Program of Chemical Engineering, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
| | - Sandra C Pereira
- Embrapa Instrumentation, Rua XV de Novembro 1452, São Carlos, SP, 13561-260, Brazil
| | - Adilson J Silva
- Graduate Program of Chemical Engineering, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil.,Dept. of Chemical Engineering, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
| | - Cristiane S Farinas
- Embrapa Instrumentation, Rua XV de Novembro 1452, São Carlos, SP, 13561-260, Brazil.,Graduate Program of Chemical Engineering, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
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11
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Production of xylanase from a novel engineered Pichia pastoris and application to enzymatic hydrolysis process for biorefinery. Process Biochem 2018. [DOI: 10.1016/j.procbio.2017.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Squinca P, Badino AC, Farinas CS. A closed-loop strategy for endoglucanase production using sugarcane bagasse liquefied by a home-made enzymatic cocktail. BIORESOURCE TECHNOLOGY 2018; 249:976-982. [PMID: 29145125 DOI: 10.1016/j.biortech.2017.10.107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 06/07/2023]
Abstract
Use of the same lignocellulosic biomass as feedstock for enzymes and ethanol production has been suggested as a lower cost option in future biorefineries. Here, we propose a closed-loop strategy to produce the cellulolytic enzymes required for biomass hydrolysis using sugarcane bagasse liquefied by a home-made enzymatic cocktail as carbon source and inducer. The fed-batch liquefaction conditions were firstly evaluated using commercial enzymes. Subsequently, the effects of different liquefied materials and solids loadings on endoglucanase production by Aspergillus niger cultivated in submerged fermentation were investigated. The liquefied bagasse produced using the home-made cocktail was more favorable for endoglucanase production, resulting in improvement up to 17%, compared to bagasse liquefied by commercial enzymes. The results indicated that liquefied bagasse produced by home-made enzymatic cocktail could provide a cost-effective carbon source and inducer for cellulolytic enzyme production, and could contribute to closing loops within the biorefinery, thus reducing costs and minimizing waste.
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Affiliation(s)
- Paula Squinca
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, 13565-905 São Carlos, SP, Brazil; Embrapa Instrumentation, Rua XV de Novembro 1452, 13561-206 São Carlos, SP, Brazil
| | - Alberto C Badino
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, 13565-905 São Carlos, SP, Brazil
| | - Cristiane S Farinas
- Graduate Program of Chemical Engineering, Federal University of São Carlos, C.P. 676, 13565-905 São Carlos, SP, Brazil; Embrapa Instrumentation, Rua XV de Novembro 1452, 13561-206 São Carlos, SP, Brazil.
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13
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Abstract
The conversion of renewable lignocellulosic biomass into fuels, chemicals, and high-value materials using the biochemical platform has been considered the most sustainable alternative for the implementation of future biorefineries. However, the high cost of the cellulolytic enzymatic cocktails used in the saccharification step significantly affects the economics of industrial large-scale conversion processes. The on-site production of enzymes, integrated to the biorefinery plant, is being considered as a potential strategy that could be used to reduce costs. In such approach, the microbial production of enzymes can be carried out using the same lignocellulosic biomass as feedstock for fungal development and biofuels production. Most of the microbial cultivation processes for the production of industrial enzymes have been developed using the conventional submerged fermentation. Recently, a sequential solid-state followed by submerged fermentation has been described as a potential alternative cultivation method for cellulolytic enzymes production. This chapter presents the detailed procedure of the sequential cultivation method, which could be employed for the on-site production of the cellulolytic enzymes required to convert lignocellulosic biomass into simple sugars.
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14
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A Chrysoporthe cubensis enzyme cocktail produced from a low-cost carbon source with high biomass hydrolysis efficiency. Sci Rep 2017. [PMID: 28634326 PMCID: PMC5478631 DOI: 10.1038/s41598-017-04262-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Low cost and high efficiency cellulolytic cocktails can consolidate lignocellulosic ethanol technologies. Sugarcane bagasse (SCB) is a low cost agro-industrial residue, and its use as a carbon source can reduce the costs of fungi cultivation for enzyme production. Chrysoporthe cubensis grown under solid state fermentation (SSF) with wheat bran has potential to produce efficient enzymatic extracts for SCB saccharification. This fungus was grown under submersed fermentation (SmF) and SSF with in natura SCB, pretreated with acid or alkali and with others carbon sources. In natura SCB induced the highest carboxymethylcellulase (CMCase), xylanase, β-xylosidase, α-galactosidase and mannanase activities by C. cubensis under SSF. In natura and washed SCB, inducers of enzyme production under SSF, did not induce high cellulases and hemicellulases production by C. cubensis in SmF. The C. cubensis enzymatic extract produced under SSF with in natura SCB as a carbon source was more efficient for lignocelulolic biomass hydrolysis than extracts produced under SSF with wheat bran and commercial cellulolytic extract. Chrysoporthe cubensis showed high potential for cellulases and hemicellulases production, especially when grown under SSF with in natura SCB as carbon source.
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15
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Kogo T, Yoshida Y, Koganei K, Matsumoto H, Watanabe T, Ogihara J, Kasumi T. Production of rice straw hydrolysis enzymes by the fungi Trichoderma reesei and Humicola insolens using rice straw as a carbon source. BIORESOURCE TECHNOLOGY 2017; 233:67-73. [PMID: 28258998 DOI: 10.1016/j.biortech.2017.01.075] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/20/2017] [Accepted: 01/21/2017] [Indexed: 06/06/2023]
Abstract
Rice straw was evaluated as a carbon source for the fungi, Trichoderma reesei and Humicola insolens, to produce enzymes for rice straw hydrolysis. The enzyme activity of T. reesei and H. insolens cultivated in medium containing non-treated rice straw were almost equivalent to the enzyme of T. reesei cultivated in Avicel medium, a form of refined cellulose. The enzyme activity of T. reesei cultivated in medium containing NH4OH-treated rice straw was 4-fold higher than enzyme from cultures grown in Avicel medium. In contrast, H. insolens enzyme from cultures grown in NH4OH-treated rice straw had significantly lower activity compared with non-treated rice straw or Avicel. The combined use of T. reesei and H. insolens enzymes resulted in a significant synergistic enhancement in enzymatic activity. Our data suggest that rice straw is a promising low-cost carbon source for fungal enzyme production for rice straw hydrolysis.
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Affiliation(s)
- Takashi Kogo
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Yuki Yoshida
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Keisuke Koganei
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Hitoshi Matsumoto
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Taisuke Watanabe
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Jun Ogihara
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Takafumi Kasumi
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan.
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16
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Cunha FM, Badino AC, Farinas CS. Effect of a novel method for in-house cellulase production on 2G ethanol yields. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.01.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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17
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de Sousa Gomes K, Maitan-Alfenas GP, de Andrade LGA, Falkoski DL, Guimarães VM, Alfenas AC, de Rezende ST. Purification and Characterization of Xylanases from the Fungus Chrysoporthe cubensis for Production of Xylooligosaccharides and Fermentable Sugars. Appl Biochem Biotechnol 2016; 182:818-830. [DOI: 10.1007/s12010-016-2364-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/07/2016] [Indexed: 11/24/2022]
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Zhang F, Bai F, Zhao X. Enhanced cellulase production from Trichoderma reesei Rut-C30 by engineering with an artificial zinc finger protein library. Biotechnol J 2016; 11:1282-1290. [PMID: 27578229 DOI: 10.1002/biot.201600227] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 01/03/2023]
Abstract
Trichoderma reesei Rut-C30 is a well-known cellulase producer, and improvement of its cellulase production is of great interest. An artificial zinc finger protein (AZFP) library is constructed for expression in T. reesei Rut-C30, and a mutant strain T. reesei U3 is selected based on its enhanced cellulase production. The U3 mutant shows a 55% rise in filter paper activity and 8.1-fold increased β-glucosidase activity, when compared to the native strain T. reesei Rut-C30. It is demonstrated that enhanced β-glucosidase activity was due to elevated transcription level of β-glucosidase gene in the U3 mutant. Moreover, significant elevation in transcription levels of several putative Azfp-U3 target genes is detected in the U3 mutant, including genes encoding hypothetical transcription factors and a putative glycoside hydrolase. Furthermore, U3 cellulase shows 115% higher glucose yield from pretreated corn stover, when compared to the cellulase of T. reesei Rut-C30. These results demonstrate that AZFP can be used to improve cellulase production in T. reesei Rut-C30. Our current work offers the establishment of an alternative strategy to develop fungal cell factories for improved production of high value industrial products.
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Affiliation(s)
- Fei Zhang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Fengwu Bai
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China.,State Key Laboratory of Microbial Metabolism and School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Xinqing Zhao
- State Key Laboratory of Microbial Metabolism and School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
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The use of thermostable bacterial hemicellulases improves the conversion of lignocellulosic biomass to valuable molecules. Appl Microbiol Biotechnol 2016; 100:7577-90. [DOI: 10.1007/s00253-016-7562-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 04/10/2016] [Accepted: 04/16/2016] [Indexed: 12/27/2022]
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Loman AA, Ju LK. Towards complete hydrolysis of soy flour carbohydrates by enzyme mixtures for protein enrichment: A modeling approach. Enzyme Microb Technol 2016; 86:25-33. [DOI: 10.1016/j.enzmictec.2016.01.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/27/2015] [Accepted: 01/19/2016] [Indexed: 01/15/2023]
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Yoo HY, Pradeep GC, Lee SK, Park DH, Cho SS, Choi YH, Yoo JC, Kim SW. Understanding β-mannanase from Streptomyces sp. CS147 and its potential application in lignocellulose based biorefining. Biotechnol J 2015; 10:1894-902. [PMID: 26479417 DOI: 10.1002/biot.201500150] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/26/2015] [Accepted: 10/12/2015] [Indexed: 11/08/2022]
Abstract
Hydrolytic enzymes such as cellulase and hemicellulase have been attracted in lignocellulose based biorefinery. Especially, mannanase has been a growing interest in industrial applications due to its importance in the bioconversion. In this study, an extracellular endo-β-1,4-D-mannanase was produced by Streptomyces sp. CS147 (Mn147) and purified 8.5-fold with a 43.4% yield using Sephadex G-50 column. The characterization of Mn147 was performed, and the results were as follows: molecular weight of ∼25 kDa with an optimum temperature of 50°C and pH of 11.0. The effect of metal ions and various reagents on Mn147 was strongly activated by Ca(+2) but inhibited by Mg(+2) , Fe(+2) , hydrogen peroxide, EDTA and EGTA. Km and Vmax values of Mn147 were 0.13 mg/mL and 294 μmol/min mg, respectively, when different concentrations (3.1 to 50 mg/mL) of locust bean gum galactomannan were used as substrate. In enzymatic hydrolysis of heterogeneous substrate (spent coffee grounds), Mn147 shows a similar conversion compared to commercial enzymes. In addition, lignocellulosic biomass can be hydrolyzed to oligosaccharides (reducing sugars), which can be further utilized for the production of biomaterials. These results showed that Mn147 is attractive in quest of potential bioindustrial applications.
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Affiliation(s)
- Hah Y Yoo
- Department of Chemical and Biological Engineering, Korea University, Seoul, Korea
| | - G C Pradeep
- Department of Pharmacy, Chosun University, Gwangju, Korea
| | - Soo K Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul, Korea
| | - Don H Park
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju, Korea
| | - Seung S Cho
- Department of Pharmacy, Mokpo National University, Muan, Jeonnam, Korea
| | - Yun H Choi
- Department of Pharmacy, Chosun University, Gwangju, Korea
| | - Jin C Yoo
- Department of Pharmacy, Chosun University, Gwangju, Korea.
| | - Seung W Kim
- Department of Chemical and Biological Engineering, Korea University, Seoul, Korea.
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Enhancing saccharification of wheat straw by mixing enzymes from genetically-modified Trichoderma reesei and Aspergillus niger. Biotechnol Lett 2015; 38:65-70. [PMID: 26354856 PMCID: PMC4706842 DOI: 10.1007/s10529-015-1951-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 09/02/2015] [Indexed: 12/15/2022]
Abstract
Objectives To increase the efficiency of enzymatic hydrolysis for plant biomass conversion into renewable biofuel and chemicals. Results By overexpressing the point mutation A824 V transcriptional activator Xyr1 in Trichoderma reesei, carboxymethyl cellulase, cellobiosidase and β-d-glucosidase activities of the best mutant were increased from 1.8 IU/ml, 0.1 IU/ml and 0.05 IU/ml to 4.8 IU/ml, 0.4 IU/ml and 0.3 IU/ml, respectively. The sugar yield of wheat straw saccharification by combining enzymes from this mutant and the Aspergillus niger genetically modified strain ΔcreA/xlnRc/araRc was improved up to 7.5 mg/ml, a 229 % increase compared to the combination of wild type strains. Conclusions Mixing enzymes from T. reesei and A. niger combined with the genetic modification of transcription factors is a promising strategy to increase saccharification efficiency. Electronic supplementary material The online version of this article (doi:10.1007/s10529-015-1951-9) contains supplementary material, which is available to authorized users.
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Zhang L, Zhang S, Jiang X, Wei W, Wang W, Wei D. A novel host-vector system for heterologous protein co-expression and purification in the Trichoderma reesei industrial strain RUT-C30. Biotechnol Lett 2015; 38:89-96. [DOI: 10.1007/s10529-015-1948-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 08/27/2015] [Indexed: 10/23/2022]
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Wang M, Han L, Liu S, Zhao X, Yang J, Loh SK, Sun X, Zhang C, Fang X. A Weibull statistics-based lignocellulose saccharification model and a built-in parameter accurately predict lignocellulose hydrolysis performance. Biotechnol J 2015; 10:1424-33. [DOI: 10.1002/biot.201400723] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/09/2015] [Accepted: 06/25/2015] [Indexed: 11/11/2022]
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Enhanced Biological Straw Saccharification Through Coculturing of Lignocellulose-Degrading Microorganisms. Appl Biochem Biotechnol 2015; 175:3709-28. [DOI: 10.1007/s12010-015-1539-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/06/2015] [Indexed: 11/26/2022]
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26
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Maitan-Alfenas GP, Visser EM, Guimarães VM. Enzymatic hydrolysis of lignocellulosic biomass: converting food waste in valuable products. Curr Opin Food Sci 2015. [DOI: 10.1016/j.cofs.2014.10.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Peng J. Editorial: "Biotech Methods" and the Biotechnology Journal mobile app. Biotechnol J 2014; 9:1225-6. [PMID: 25270841 DOI: 10.1002/biot.201400492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Judy Peng
- Biotechnology Journal - Managing Editor.
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