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Zhou R, Wang S, Zhan N, He W, Deng G, Dou T, Zhu XT, Xie WZ, Zheng YY, Hu C, Bi F, Gao H, Dong T, Liu S, Li C, Yang Q, Wang L, Song JM, Dang J, Guo Q, Yi G, Chen LL, Sheng O. High-quality genome assemblies for two Australimusa bananas (Musa spp.) and insights into regulatory mechanisms of superior fiber properties. PLANT COMMUNICATIONS 2024; 5:100681. [PMID: 37660253 PMCID: PMC10811375 DOI: 10.1016/j.xplc.2023.100681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 08/19/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Bananas (Musa spp.) are monocotyledonous plants with high genetic diversity in the Musaceae family that are cultivated mainly in tropical and subtropical countries. The fruits are a popular food, and the plants themselves have diverse uses. Four genetic groups (genomes) are thought to have contributed to current banana cultivars: Musa acuminata (A genome), Musa balbisiana (B genome), Musa schizocarpa (S genome), and species of the Australimusa section (T genome). However, the T genome has not been effectively explored. Here, we present the high-quality TT genomes of two representative accessions, Abaca (Musa textilis), with high-quality natural fiber, and Utafun (Musa troglodytarum, Fe'i group), with abundant β-carotene. Both the Abaca and Utafun assemblies comprise 10 pseudochromosomes, and their total genome sizes are 613 Mb and 619 Mb, respectively. Comparative genome analysis revealed that the larger size of the T genome is likely attributable to rapid expansion and slow removal of transposons. Compared with those of Musa AA or BB accessions or sisal (Agava sisalana), Abaca fibers exhibit superior mechanical properties, mainly because of their thicker cell walls with a higher content of cellulose, lignin, and hemicellulose. Expression of MusaCesA cellulose synthesis genes peaks earlier in Abaca than in AA or BB accessions during plant development, potentially leading to earlier cellulose accumulation during secondary cell wall formation. The Abaca-specific expressed gene MusaMYB26, which is directly regulated by MusaMYB61, may be an important regulator that promotes precocious expression of secondary cell wall MusaCesAs. Furthermore, MusaWRKY2 and MusaNAC68, which appear to be involved in regulating expression of MusaLAC and MusaCAD, may at least partially explain the high accumulation of lignin in Abaca. This work contributes to a better understanding of banana domestication and the diverse genetic resources in the Musaceae family, thus providing resources for Musa genetic improvement.
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Affiliation(s)
- Run Zhou
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China; College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Shuo Wang
- College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Ni Zhan
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Weidi He
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Guiming Deng
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Tongxin Dou
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Xi-Tong Zhu
- College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Wen-Zhao Xie
- College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Yu-Yu Zheng
- College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunhua Hu
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Fangcheng Bi
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Huijun Gao
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Tao Dong
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Siwen Liu
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Chunyu Li
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Qiaosong Yang
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Lingqiang Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Jia-Ming Song
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Jiangbo Dang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China
| | - Qigao Guo
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China
| | - Ganjun Yi
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China.
| | - Ling-Ling Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China.
| | - Ou Sheng
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China.
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2
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Madadi M, Liu D, Qin Y, Zhang Y, Karimi K, Tabatabaei M, Gupta VK, Aghbashlo M, Ali SS. Integrated pretreatment of poplar biomass employing p-toluenesulfonic acid catalyzed liquid hot water and short-time ball milling for complete conversion to xylooligosaccharides, glucose, and native-like lignin. BIORESOURCE TECHNOLOGY 2023:129370. [PMID: 37343805 DOI: 10.1016/j.biortech.2023.129370] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/16/2023] [Accepted: 06/17/2023] [Indexed: 06/23/2023]
Abstract
This work aimed to study an integrated pretreatment technology employing p-toluenesulfonic acid (TsOH)-catalyzed liquid hot water (LHW) and short-time ball milling for the complete conversion of poplar biomass to xylooligosaccharides (XOS), glucose, and native-like lignin. The optimized TsOH-catalyzed LHW pretreatment solubilized 98.5% of hemicellulose at 160 °C for 40 min, releasing 49.8% XOS. Moreover, subsequent ball milling (20 min) maximized the enzymatic hydrolysis of cellulose from 65.8% to 96.5%, owing to the reduced particle sizes and cellulose crystallinity index. The combined pretreatment reduced the crystallinity by 70.9% while enlarging the average pore size and pore volume of the substrate by 29.5% and 52.4%, respectively. The residual lignin after enzymatic hydrolysis was rich in β-O-4 linkages (55.7/100 Ar) with a less condensed structure. This lignin exhibited excellent antioxidant activity (RSI of 66.22) and ultraviolet absorbance. Thus, this research suggested a sustainable waste-free biorefinery for the holistic valorization of biomass through two-step biomass fractionation.
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Affiliation(s)
- Meysam Madadi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Dan Liu
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Yuanhang Qin
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reaction & Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yinchao Zhang
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Keikhosro Karimi
- Department of Chemical Engineering, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Meisam Tabatabaei
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Vijai Kumar Gupta
- Centre for Safe and Improved Food, SRUC, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Mortaza Aghbashlo
- Department of Mechanical Engineering of Agricultural Machinery, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Sameh Samir Ali
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
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3
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Xu C, Xia T, Peng H, Liu P, Wang Y, Wang Y, Kang H, Tang J, Nauman Aftab M, Peng L. BsEXLX of engineered Trichoderma reesei strain as dual-active expansin to boost cellulases secretion for synergistic enhancement of biomass enzymatic saccharification in corn and Miscanthus straws. BIORESOURCE TECHNOLOGY 2023; 376:128844. [PMID: 36906237 DOI: 10.1016/j.biortech.2023.128844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
In this study, bacterial BsEXLE1 gene was overexpressed into T. reesei (Rut-C30) to generate a desirable engineered TrEXLX10 strain. While incubated with alkali-pretreated Miscanthus straw as carbon source, the TrEXLX10 secreted the β-glucosidases, cellobiohydrolases and xylanses with activities raised by 34%, 82% and 159% compared to the Rut-C30. Supplying EXLX10-secreted crude enzymes and commercial mixed-cellulases for two-step lignocellulose hydrolyses of corn and Miscanthus straws after mild alkali pretreatments, this work measured consistently higher hexoses yields released by the EXLX10-secreted enzymes for synergistic enhancements of biomass saccharification in all parallel experiments examined. Meanwhile, this study detected that the expansin, purified from EXLX10-secreted solution, was of exceptionally high binding activities with wall polymers, and further determined its independent enhancement for cellulose hydrolysis. Therefore, this study raised a mechanism model to highlight EXLX/expansin dual-activation roles for both secretion of stable biomass-degradation enzymes at high activity and biomass enzymatic saccharification in bioenergy crops.
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Affiliation(s)
- Chengbao Xu
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China; Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China
| | - Tao Xia
- Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hao Peng
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China; Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Peng Liu
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China; Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yihong Wang
- Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yanting Wang
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China; Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Heng Kang
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China; Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jingfeng Tang
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China
| | | | - Liangcai Peng
- Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation & Molecular Pharmaceutics, Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, College of Biotechnology & Food Science, Hubei University of Technology, Wuhan 430068, China; Biomass & Bioenergy Research Centre, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China.
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4
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Madadi M, Elsayed M, Sun F, Wang J, Karimi K, Song G, Tabatabaei M, Aghbashlo M. Sustainable lignocellulose fractionation by integrating p-toluenesulfonic acid/pentanol pretreatment with mannitol for efficient production of glucose, native-like lignin, and furfural. BIORESOURCE TECHNOLOGY 2023; 371:128591. [PMID: 36627085 DOI: 10.1016/j.biortech.2023.128591] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
A new cutting-edge lignocellulose fractionation technology for the co-production of glucose, native-like lignin, and furfural was introduced using mannitol (MT)-assisted p-toluenesulfonic acid/pentanol pretreatment, as an eco-friendly process. The addition of optimized 5% MT in pretreatment enhanced the delignification rate by 29% and enlarged the surface area and biomass porosity by 1.07-1.80 folds. This increased the glucose yield by 45% (from 65.34 to 94.54%) after enzymatic hydrolysis relative to those without MT. The extracted lignin in the organic phase of pretreatment exhibited β-O-4 bonds (61.54/100 Ar) properties of native cellulosic enzyme lignin. Lignin characterization and molecular docking analyses revealed that the hydroxyl tails of MT were incorporated with lignin and formed etherified lignin, which preserved high lignin integrity. The solubilized hemicellulose (96%) in the liquid phase of pretreatment was converted into furfural with a yield of 83.99%. The MT-assisted pretreatment could contribute to a waste-free biorefinery pathway toward a circular bioeconomy.
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Affiliation(s)
- Meysam Madadi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Mahdy Elsayed
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
| | - Fubao Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jing Wang
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
| | - Keikhosro Karimi
- Department of Chemical Engineering, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Guojie Song
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Meisam Tabatabaei
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Mortaza Aghbashlo
- Department of Mechanical Engineering of Agricultural Machinery, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
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5
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Madadi M, Shah SWA, Sun C, Wang W, Ali SS, Khan A, Arif M, Zhu D. Efficient co-production of xylooligosaccharides and glucose from lignocelluloses by acid/pentanol pretreatment: Synergetic role of lignin removal and inhibitors. BIORESOURCE TECHNOLOGY 2022; 365:128171. [PMID: 36283660 DOI: 10.1016/j.biortech.2022.128171] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
A novel technology for co-production of xylooligosaccharides (XOS) and glucose from Monterey pine sawdust and wheat straw was introduced using dilute acid (DA)/pentanol pretreatment. Effects of pretreatment severity (PS), lignin removal, and inhibitors with byproduct concentrations on XOS production were investigated. Optimal identified conditions (PS: 3.71; 170 °C, 45 min) resulted in maximum XOS of 48.65 % (pine sawdust) and 46.85 % (wheat straw), due to appropriate lignin removal (pine sawdust, 88.5 %; wheat straw, 89.7 %) and formation of small amounts of inhibitors and byproducts. Enzymatic hydrolysis of optimal pretreated solid residues yielded 88.65 % and 93.34 % glucose in pine sawdust and wheat straw, respectively. Biomass characterization revealed that DA/pentanol pretreatment enhanced porosity and pore size along with removal of amorphous fractions in both samples, thereby increasing cellulose accessibility and glucose yield. This study demonstrated lignin removal and low formation of inhibitors and byproducts, effectively enhancing XOS and glucose production from lignocellulosic biomass.
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Affiliation(s)
- Meysam Madadi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Syed Waqas Ali Shah
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Chihe Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Wen Wang
- Bio-chemical Conversion Lab Center for Biomass Energy Research, Guangzhou Institute of Energy Conversion, CAS, 510640, China
| | - Sameh Samir Ali
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Ahmad Khan
- Department of Agronomy, The University of Agriculture, Peshawar 25130, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Arif
- Department of Agronomy, The University of Agriculture, Peshawar 25130, Khyber Pakhtunkhwa, Pakistan
| | - Daochen Zhu
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
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6
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Madadi M, Song G, Sun F, Sun C, Xia C, Zhang E, Karimi K, Tu M. Positive role of non-catalytic proteins on mitigating inhibitory effects of lignin and enhancing cellulase activity in enzymatic hydrolysis: Application, mechanism, and prospective. ENVIRONMENTAL RESEARCH 2022; 215:114291. [PMID: 36103929 DOI: 10.1016/j.envres.2022.114291] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/18/2022] [Accepted: 09/04/2022] [Indexed: 06/15/2023]
Abstract
Fermentable sugar production from lignocellulosic biomass has received considerable attention and has been dramatic progress recently. However, due to low enzymatic hydrolysis (EH) yields and rates, a high dosage of the costly enzyme is required, which is a bottleneck for commercial applications. Over the last decades, various strategies have been developed to reduce cellulase enzyme costs. The progress of the non-catalytic additive proteins in mitigating inhibition in EH is discussed in detail in this review. The low efficiency of EH is mostly due to soluble lignin compounds, insoluble lignin, and harsh thermal and mechanical conditions of the EH process. Adding non-catalytic proteins into the EH is considered a simple and efficient approach to boost hydrolysis yield. This review discussed the multiple mechanical steps involved in the EH process. The effect of physicochemical properties of modified lignin on EH and its interaction with cellulase and cellulose are identified and discussed, which include hydrogen bonding, hydrophobic, electrostatic, and cation-π interactions, as well as physical barriers. Moreover, the effects of different conditions of EH that lead to cellulase deactivation by thermal and mechanical mechanisms are also explained. Finally, recent advances in the development, potential mechanisms, and economic feasibility of non-catalytic proteins on EH are evaluated and perspectives are presented.
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Affiliation(s)
- Meysam Madadi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Guojie Song
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Fubao Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China.
| | - Chihe Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Ezhen Zhang
- Institute of Agro-Products Processing Science and Technology, Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
| | - Keikhosro Karimi
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Maobing Tu
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH, 45221, United States
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7
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Madadi M, Song G, Karimi K, Zhu D, Elsayed M, Sun F, Abomohra A. One-step lignocellulose fractionation using acid/pentanol pretreatment for enhanced fermentable sugar and reactive lignin production with efficient pentanol retrievability. BIORESOURCE TECHNOLOGY 2022; 359:127503. [PMID: 35728765 DOI: 10.1016/j.biortech.2022.127503] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
To valorize whole lignocellulosic biomass, this study proposed a biphasic solvent system using dilute acid (DA)/pentanol pretreatment. Effects of the key factors, i.e., temperature and pentanol concentration, on aspen were evaluated. Under identified optimal pretreatment conditions (160 °C, 60% pentanol), 85% and 91% of lignin and hemicellulose were solubilized in separate organic and liquid phases, respectively, while 91.1% of cellulose was retained in solid fraction. Enzymatic digestibility efficiency of pretreated cellulose was ∼ 6.4-times higher than that of untreated biomass. Notably, excellent pentanol recovery rates were obtained after four-times recycling (84%) with great cellulose digestibility (81%) and delignification (71%) performance. The recovered lignin contained low levels of contaminated sugars (<1%), while it could stabilize and protect high amounts of β-O-4 bonds. Besides, high phenolic OH content was found in lignin, which could be utilized for lignin-based biomaterials. Therefore, DA/pentanol pretreatment is an innovative promising technology for lignocellulosic valorization towards biorefinery.
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Affiliation(s)
- Meysam Madadi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guojie Song
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Keikhosro Karimi
- Department of Chemical Engineering, Vrije Universiteit Brussel, 1050 Brussels, Belgium; Department of Chemical Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran
| | - Daochen Zhu
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Mahdy Elsayed
- Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - Fubao Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Abdelfatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
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8
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Madadi M, Bakr MM, Abdulkhani A, Zahoor, Asadollahi MA, Sun C, Sun F, Abomohra AEF. Alleviating lignin repolymerization by carbocation scavenger for effective production of fermentable sugars from combined liquid hot water and green-liquor pretreated softwood biomass. ENERGY CONVERSION AND MANAGEMENT 2022; 251:114956. [DOI: 10.1016/j.enconman.2021.114956] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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9
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Kong M, Li X, Li T, Zhao X, Jin M, Zhou X, Gu H, Mrša V, Xiao W, Cao L. Overexpressing CCW12 in Saccharomyces cerevisiae enables highly efficient ethanol production from lignocellulose hydrolysates. BIORESOURCE TECHNOLOGY 2021; 337:125487. [PMID: 34320766 DOI: 10.1016/j.biortech.2021.125487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
A Saccharomyces cerevisiae strain CCW12OE was constructed by overexpressing CCW12 in a previously reported strain WXY70 harboring six xylose utilization genes. CCW12OE produced an optimal ethanol yield of 98.8% theoretical value within 48 h in a simulated corn stover hydrolysate. CCW12OEwas comprehensively evaluated for ethanol production in Miscanthus, maize and corncob hydrolysates, among which a 96.1% theoretical value was achieved within 12 h in corncob hydrolysates. Under normal growth conditions, CCW12OE did not display altered cell morphology; however, in the presence of acetate, CCW12OE maintained relatively intact cell structure and increased cell wall thickness by nearly 50%, while WXY70 had abnormal cell morphology and reduced cell wall thickness by nearly 50%. Besides, CCW12OE had higher fermentation capacity than that of WXY70 in undetoxified and detoxified hydrolysates with both aerobic and anaerobic conditions, demonstrating that CCW12 overexpression alone exhibits improved stress resistance and better fermentation performance.
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Affiliation(s)
- Meilin Kong
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Xiaowei Li
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Tongtong Li
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Xuebing Zhao
- Key Laboratory for Industrial Biocatalysis, Ministry of Education of China, Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xin Zhou
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Hanqi Gu
- Department of Biology and Food Science, Hebei Normal University for Nationalities, Chengde, Hebei 067000, China
| | - Vladimir Mrša
- Laboratory of Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia
| | - Wei Xiao
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Limin Cao
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China.
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Madadi M, Zhao K, Wang Y, Wang Y, Tang SW, Xia T, Jin N, Xu Z, Li G, Qi Z, Peng L, Xiong Z. Modified lignocellulose and rich starch for complete saccharification to maximize bioethanol in distinct polyploidy potato straw. Carbohydr Polym 2021; 265:118070. [PMID: 33966834 DOI: 10.1016/j.carbpol.2021.118070] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 01/09/2023]
Abstract
Potato is a major food crop with enormous biomass straw, but lignocellulose recalcitrance causes a costly bioethanol conversion. Here, we selected the cytochimera (Cyt) potato samples showing significantly-modified lignocellulose and much increased soluble sugars and starch by 2-4 folds in mature straws. Under two pretreatments (8 min liquid hot water; 5% CaO) at minimized conditions, the potato Cyt straw showed complete enzymatic saccharification. Further performing yeast fermentation with all hexoses released from soluble sugars, starch and lignocellulose in the Cyt straw, this study achieved a maximum bioethanol yield of 24 % (% dry matter), being higher than those of other bioenergy crops as previously reported. Hence, this study has proposed a novel mechanism model on the reduction of major lignocellulose recalcitrance and regulation of carbon assimilation to achieve cost-effective bioethanol production under optimal pretreatments. This work also provides a sustainable strategy for utilization of potato straws with minimum waste release.
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Affiliation(s)
- Meysam Madadi
- Biomass & Bioenergy Research Center, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory of Biomass Engineering & Nanomaterial Application in Automobiles, College of Food Science & Chemical Engineering, Hubei University of Arts & Science, Xiangyang, China.
| | - Kanglu Zhao
- Key Laboratory of Herbage & Endemic Crop Biotechnology, Ministry of Education, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China.
| | - Youmei Wang
- Biomass & Bioenergy Research Center, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yanting Wang
- Biomass & Bioenergy Research Center, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory of Biomass Engineering & Nanomaterial Application in Automobiles, College of Food Science & Chemical Engineering, Hubei University of Arts & Science, Xiangyang, China.
| | - Shang-Wen Tang
- Laboratory of Biomass Engineering & Nanomaterial Application in Automobiles, College of Food Science & Chemical Engineering, Hubei University of Arts & Science, Xiangyang, China.
| | - Tao Xia
- Biomass & Bioenergy Research Center, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Nengzhou Jin
- Key Laboratory of Herbage & Endemic Crop Biotechnology, Ministry of Education, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China.
| | - Zhijun Xu
- Key Laboratory of Herbage & Endemic Crop Biotechnology, Ministry of Education, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China.
| | - Guanhua Li
- Key Laboratory of Herbage & Endemic Crop Biotechnology, Ministry of Education, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China.
| | - Zhi Qi
- Key Laboratory of Herbage & Endemic Crop Biotechnology, Ministry of Education, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China.
| | - Liangcai Peng
- Biomass & Bioenergy Research Center, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory of Biomass Engineering & Nanomaterial Application in Automobiles, College of Food Science & Chemical Engineering, Hubei University of Arts & Science, Xiangyang, China.
| | - Zhiyong Xiong
- Key Laboratory of Herbage & Endemic Crop Biotechnology, Ministry of Education, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China.
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11
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Acid soaking followed by steam flash-explosion pretreatment to enhance saccharification of rice husk for poly(3-hydroxybutyrate) production. Int J Biol Macromol 2020; 160:446-455. [DOI: 10.1016/j.ijbiomac.2020.05.218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/15/2020] [Accepted: 05/26/2020] [Indexed: 01/22/2023]
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12
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Saccharification of water hyacinth biomass by a combination of steam explosion with enzymatic technologies for bioethanol production. 3 Biotech 2020; 10:432. [PMID: 32999810 DOI: 10.1007/s13205-020-02426-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/04/2020] [Indexed: 12/12/2022] Open
Abstract
In the present work, bioethanol was produced by sugar fermentation obtained from water hyacinth using a novelty hybrid method composed of steam explosion and enzymatic hydrolysis, using hydrolytic enzymes produced by solid-state fermentation and water hyacinth as substrate. The highest activity, 42 U for xylanase and 2 U for cellulase per gram of dry matter, respectively, was obtained. Steam explosion pretreatment was performed at 190 ℃ for 1, 5, and 10 min, using water hyacinth sampled from the Maria Lizamba Lagoon, the Arroyo Hondo and the Amapa River. The highest amounts of reducing sugars of water hyacinth were obtained form the samples from the lagoon (5.4 g/50 g of dry matter) after 10 min of treatment. Steamed biomass was hydrolysed using the enzymes obtained by solid-state fermentation, obtained reducing sugars (maximum 15.5 g/L); the efficiency of enzymatic hydrolysis was 0.51 g of reducing sugars per gram of water hyacinth. Finally, reducing sugars were fermented using Saccharomyces cerevisiae for conversion to ethanol, with the highest ethanol concentration (7.13 g/L) and an ethanol yield of 0.23 g/g of dry matter.
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13
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Zhu L, Li P, Sun T, Kong M, Li X, Ali S, Liu W, Fan S, Qiao J, Li S, Peng L, He B, Jin M, Xiao W, Cao L. Overexpression of SFA1 in engineered Saccharomyces cerevisiae to increase xylose utilization and ethanol production from different lignocellulose hydrolysates. BIORESOURCE TECHNOLOGY 2020; 313:123724. [PMID: 32586644 DOI: 10.1016/j.biortech.2020.123724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/08/2020] [Accepted: 06/18/2020] [Indexed: 05/12/2023]
Abstract
Here, an engineered Saccharomyces cerevisiae strain SFA1OE was constructed by overexpressing SFA1 in a reported WXY70 with effective six-gene clusters. Under simulated maize hydrolysate, SFA1OE produced an ethanol yield of 0.492 g/g totalsugars within 48 h. The productivity of SFA1OE was comprehensively evaluated in typical hydrolysates from stalks of maize, sweet sorghum, wheat and Miscanthus. Within 48 h, SFA1OE achieved an ethanol yield of 0.489 g/g totalsugars in the optimized hydrolysate of alkaline-distilled sweet sorghum bagasse derived from Advanced Solid-State Fermentation process. By crossing SFA1OE with a DQ1-derived haploid strain, we obtained an evolved diploid strain SQ-2, exhibiting improved ethanol production and thermotolerance. This study demonstrates that overexpressing SFA1 enables efficient fermentation performance in different lignocellulosic hydrolysates, especially in the hydrolysate of alkaline-distilled sweet sorghum bagasse. The increased cellulosic bioethanol production of SFA1OE provides a promising platform for efficient biorefineries.
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Affiliation(s)
- Lang Zhu
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Pengsong Li
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Tongming Sun
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Meilin Kong
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Xiaowei Li
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Sajid Ali
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Wenbo Liu
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Sichun Fan
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Jingchun Qiao
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Shizhong Li
- MOST-USDA Joint Research Center for Biofuels, Beijing Engineering Research Center for Biofuels, Institute of New Energy Technology, Tsinghua University, Beijing 100084 China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Boyang He
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Wei Xiao
- College of Life Sciences, Capital Normal University, Beijing 100048, China; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Limin Cao
- College of Life Sciences, Capital Normal University, Beijing 100048, China.
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14
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Sewsynker-Sukai Y, Naomi David A, Gueguim Kana EB. Recent developments in the application of kraft pulping alkaline chemicals for lignocellulosic pretreatment: Potential beneficiation of green liquor dregs waste. BIORESOURCE TECHNOLOGY 2020; 306:123225. [PMID: 32241680 DOI: 10.1016/j.biortech.2020.123225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 05/24/2023]
Abstract
Lignocellulosic waste has offered a cost-effective and food security-wise substrate for the generation of biofuels and value-added products. However, its recalcitrant properties necessitate pretreatment. Of the various pretreatment methods, alkaline techniques have gained prominence as efficient catalysts. The kraft pulping industry represents a major hub for the generation of white, black and green liquor alkaline solutions during the paper making process. Despite its well-known significance in the kraft pulping process, green liquor (GL) has been widely applied for lignocellulosic pretreatment. Recently, green liquor dregs (GLD), an alkaline waste generated from the kraft pulping industry has piqued interest. Therefore, this review outlines the general flow of the kraft pulping process and the alkaline chemicals derived. In addition, the extensively studied GL for lignocellulosic pretreatment is discussed. Subsequently, the potential beneficiation of GLD for lignocellulosic pretreatment is presented. Furthermore, the challenges and prospects of lignocellulosic pretreatments are highlighted.
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Affiliation(s)
- Yeshona Sewsynker-Sukai
- University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa; SMRI/NRF SARChI Research Chair in Sugarcane Biorefining, Discipline of Chemical Engineering, University of KwaZulu-Natal, Durban, South Africa.
| | - Anthea Naomi David
- University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa
| | - E B Gueguim Kana
- University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa
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15
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Marques GL, Aguiar-Oliveira E. Yellow mombin and jackfruit seeds residues applied in the production of reducing sugars by a crude multi-enzymatic extract produced by Penicillium roqueforti ATCC 101110. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:3428-3434. [PMID: 32166762 DOI: 10.1002/jsfa.10377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/07/2020] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND As an alternative to the use of widely investigated agro-industrial residues, the present study aimed to promote the valorization of two selected residues, yellow mombin seed (YS) and jackfruit seed (JS), as a result of their enhanced performance. RESULTS YS was applied as a solid state substrate for Penicillium roqueforti ATCC 101110 cultivation (25 °C, Aw = 0.963, 107 spores g-1 and 142 h) to produce a crude multi-enzymatic extract (CE-YS) containing activities of CMCase = 31.95 U g-1 , xylanase = 56.85 U g-1 , exoglucanase = 5.55 U g-1 and FPase = 24.60 U g-1 . CE-YS was then applied to six different residues saccharification and the best performance was obtained with jackfruit seed residue (JS), which was selected for enzymatic saccharification. The highest productivity of reducing sugars expressed as glucose (6.26 mg g-1 h-1 ) was obtained under the conditions: 40.7 g L-1 JS, 5 mmol L-1 MgCl2 , 65 °C, 120 rpm, pH 3.0 (citrate buffer 50 mmol L-1 ) and 18 h. CONCLUSION The residues, YS and JS, can be used satisfactorily for the production of bioproducts of great industrial applicability, such as crude extracts (containing cellulolytic enzymes) and RS (which can be converted, for example, into bioethanol). © 2020 Society of Chemical Industry.
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Affiliation(s)
- George L Marques
- Department of Exact Sciences and Technologies (DCET), State University of Santa Cruz (UESC), Ilhéus, Brazil
| | - Elizama Aguiar-Oliveira
- Department of Exact Sciences and Technologies (DCET), State University of Santa Cruz (UESC), Ilhéus, Brazil
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16
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Yang Q, Zhao W, Liu J, He B, Wang Y, Yang T, Zhang G, He M, Lu J, Peng L, Wang Y. Quantum dots are conventionally applicable for wide-profiling of wall polymer distribution and destruction in diverse cells of rice. Talanta 2020; 208:120452. [PMID: 31816737 DOI: 10.1016/j.talanta.2019.120452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/30/2019] [Accepted: 10/06/2019] [Indexed: 11/28/2022]
Abstract
Plant cell walls represent enormous biomass resources for biofuels, and it thus becomes important to establish a sensitive and wide-applicable approach to visualize wall polymer distribution and destruction during plant growth and biomass process. Despite quantum dots (QDs) have been applied to label biological specimens, little is reported about its application in plant cell walls. Here, semiconductor QDs (CdSe/ZnS) were employed to label the secondary antibody directed to the epitopes of pectin or xylan, and sorted out the optimal conditions for visualizing two polysaccharides distribution in cell walls of rice stem. Meanwhile, the established QDs approach could simultaneously highlight wall polysaccharides and lignin co-localization in different cell types. Notably, this work demonstrated that the QDs labeling was sensitive to profile distinctive wall polymer destruction between alkali and acid pretreatments with stem tissues of rice. Hence, this study has provided a powerful tool to characterize wall polymer functions in plant growth and development in vivo, as well as their distinct roles during biomass process in vitro.
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Affiliation(s)
- Qiaomei Yang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Wenyue Zhao
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Jingyuan Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Boyang He
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tangbin Yang
- Beijing Najing Biotechnology Co., Ltd, Wuhan, China
| | - Guifen Zhang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mingxiong He
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, China
| | - Jun Lu
- Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China; Laboratory of Biomass Engineering and Nanomaterial Application in Automobiles, College of Food Science and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, China.
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17
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Islam MK, Wang H, Rehman S, Dong C, Hsu HY, Lin CSK, Leu SY. Sustainability metrics of pretreatment processes in a waste derived lignocellulosic biomass biorefinery. BIORESOURCE TECHNOLOGY 2020; 298:122558. [PMID: 31862395 DOI: 10.1016/j.biortech.2019.122558] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 05/12/2023]
Abstract
Excessive utilization of fossil fuels has resulted in serious concerns about climate change. Integrating biorefinery technology to convert waste-derived-lignocellulosic biomass into biofuels and biopolymers has become an emerging topic toward our sustainable future. Pretreatment to fractionate the building block chemicals from the biomass is a crucial unit operation to ease the downstream processes in biorefinery. However, application of solvents and chemicals in the process can create many operational and environmental challenges in sensitive areas like highly populated cities. To shed light on how to determine a green biorefinery, this study presents the sustainability metrics of various pretreatment techniques and their operational risks during urbanization. The proposed green indexes include fractionation outputs, chemical recyclability, operational profile, and safety factors. In line with the design principles of lignin valorization, the issue of urban biomass and water-and-energy nexus are addressed to support future development and application of urban biorefinery for municipal waste management.
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Affiliation(s)
- Md Khairul Islam
- Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; Research Institute for Sustainable Urban Development (RISUD), The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Huaimin Wang
- Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong, China
| | - Shazia Rehman
- Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Chengyu Dong
- Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Hsien-Yi Hsu
- School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong, China; Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong, China
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong, China
| | - Shao-Yuan Leu
- Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; Research Institute for Sustainable Urban Development (RISUD), The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
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18
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He L, Chen N, Lv H, Wang C, Zhou W, Zhang Q, Chen X. Ensiling characteristics, physicochemical structure and enzymatic hydrolysis of steam-exploded hippophae: Effects of calcium oxide, cellulase and Tween. BIORESOURCE TECHNOLOGY 2020; 295:122268. [PMID: 31675519 DOI: 10.1016/j.biortech.2019.122268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/11/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
To find a comprehensive way to enhance the utilizability of steam-exploded hippophae, calcium oxide (CaO) preimpregnation, cellulase-added storage and saccharification with addition of Tween 20 were investigated in this study. Both CaO preimpregnation and cellulase addition promoted the ensiling fermentation of anaerobically stored steam-exploded hippophae indicated by lower cellulose proportion and higher organic acids content, but led to the decrease of saccharification yield by 11.83% and 46.77-51.22%, respectively. When taking into account of organic acids being utilizable energy source, storing with addition of cellulase enhanced the utilizability of the materials in whole. Moreover, the addition of Tween 20 enhanced saccharification yield of the steam-exploded hippophae by 26.69-45.25%. Additionally, FTIR and XRD spectra clearly illustrated the structural alteration during storage. It is concluded that storing with addition of cellulase and hydrolyzing with addition of Tween 20 can enhance the utilizability of steam-exploded hippophae.
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Affiliation(s)
- Liwen He
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Na Chen
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Hongjian Lv
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Cheng Wang
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Wei Zhou
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Qing Zhang
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Xiaoyang Chen
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China.
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19
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He L, Wang C, Shi H, Zhou W, Zhang Q, Chen X. Combination of steam explosion pretreatment and anaerobic alkalization treatment to improve enzymatic hydrolysis of Hippophae rhamnoides. BIORESOURCE TECHNOLOGY 2019; 289:121693. [PMID: 31260934 DOI: 10.1016/j.biortech.2019.121693] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
The optimum condition of steam explosion pretreatment was screened for hippophae, and anaerobic calcium oxide (CaO) alkalization was further used to improve its enzymatic hydrolysis. Steam-exploded hippophae reached the lowest pH value (4.01) and the maximal hemicellulose removal (77.16%) at pressure 1.5 MPa and residence time 20 min. Lignocellulosic fractions of hippophae was remarkably reduced by CaO alkalization or steam explosion treatment, and enzymatic sugar yield was increased from 66 mg/g DM (untreated material) to 270 and 300 mg/g DM, respectively. The sequent pretreatment of steam explosion and CaO alkalization achieved a sugar yield of 330 mg/g DM, where 2% CaO loading rate was high enough. Besides, SEM, FTIR, and XRD analyses validated structural and physicochemical changes of hippophae. In conclusion, the sequent pretreatment of steam explosion at pressure 1.5 MPa for 20 min and anaerobic CaO alkalization at 2% loading rate could remarkably improve enzymatic hydrolysis of hippophae.
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Affiliation(s)
- Liwen He
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Cheng Wang
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Honghui Shi
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Wei Zhou
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Qing Zhang
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Xiaoyang Chen
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China.
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20
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Qi X, Li Z, Akami M, Mansour A, Niu C. Fermented crop straws by Trichoderma viride and Saccharomyces cerevisiae enhanced the bioconversion rate of Musca domestica (Diptera: Muscidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:29388-29396. [PMID: 31399833 DOI: 10.1007/s11356-019-06101-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Crop straw is an abundant renewable resource whose usage is limited due to its high cellulose, hemicellulose, and lignin contents. Here, Trichoderma viride, Saccharomyces cerevisiae, and Musca domestica were used to transform crop straws, and we investigated their impact on housefly rearing performance and optimized their utilization. The weights of cellulose, hemicellulose, and lignin in fermented crop straw diets significantly decreased after bioconversion by M. domestica larvae. The highest bioconversion rate was recorded in corn straw diet (16.19%), followed by wheat straw diet (10.31%) and wheat bran diet (8.97%). Similarly, high larval weight (yield) and pupation rate and fecundity and fertility rate were recorded in fermented crop straw diets composed of corn straw and wheat bran in 1:1 proportions. These results indicated that fermenting crop straw with T. viride and S. cerevisiae represented an efficient strategy that enhanced crop straw bioconversion and improved the rearing capacity of the housefly larvae. The resulting larvae could further be used as proteinaceous feed in poultry and aquaculture industries. Graphical abstract.
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Affiliation(s)
- Xuewei Qi
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhihao Li
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mazarin Akami
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O Box 454, Ngaoundere, Cameroon
| | - Abdelaziz Mansour
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Changying Niu
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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21
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Alam A, Zhang R, Liu P, Huang J, Wang Y, Hu Z, Madadi M, Sun D, Hu R, Ragauskas AJ, Tu Y, Peng L. A finalized determinant for complete lignocellulose enzymatic saccharification potential to maximize bioethanol production in bioenergy Miscanthus. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:99. [PMID: 31057665 PMCID: PMC6486690 DOI: 10.1186/s13068-019-1437-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/13/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Miscanthus is a leading bioenergy crop with enormous lignocellulose production potential for biofuels and chemicals. However, lignocellulose recalcitrance leads to biomass process difficulty for an efficient bioethanol production. Hence, it becomes essential to identify the integrative impact of lignocellulose recalcitrant factors on cellulose accessibility for biomass enzymatic hydrolysis. In this study, we analyzed four typical pairs of Miscanthus accessions that showed distinct cell wall compositions and sorted out three major factors that affected biomass saccharification for maximum bioethanol production. RESULTS Among the three optimal (i.e., liquid hot water, H2SO4 and NaOH) pretreatments performed, mild alkali pretreatment (4% NaOH at 50 °C) led to almost complete biomass saccharification when 1% Tween-80 was co-supplied into enzymatic hydrolysis in the desirable Miscanthus accessions. Consequently, the highest bioethanol yields were obtained at 19% (% dry matter) from yeast fermentation, with much higher sugar-ethanol conversion rates by 94-98%, compared to the other Miscanthus species subjected to stronger pretreatments as reported in previous studies. By comparison, three optimized pretreatments distinctively extracted wall polymers and specifically altered polymer features and inter-linkage styles, but the alkali pretreatment caused much increased biomass porosity than that of the other pretreatments. Based on integrative analyses, excellent equations were generated to precisely estimate hexoses and ethanol yields under various pretreatments and a hypothetical model was proposed to outline an integrative impact on biomass saccharification and bioethanol production subjective to a predominate factor (CR stain) of biomass porosity and four additional minor factors (DY stain, cellulose DP, hemicellulose X/A, lignin G-monomer). CONCLUSION Using four pairs of Miscanthus samples with distinct cell wall composition and varied biomass saccharification, this study has determined three main factors of lignocellulose recalcitrance that could be significantly reduced for much-increased biomass porosity upon optimal pretreatments. It has also established a novel standard that should be applicable to judge any types of biomass process technology for high biofuel production in distinct lignocellulose substrates. Hence, this study provides a potential strategy for precise genetic modification of lignocellulose in all bioenergy crops.
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Affiliation(s)
- Aftab Alam
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Ran Zhang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Peng Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Jiangfeng Huang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Zhen Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Meysam Madadi
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Dan Sun
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068 China
| | - Ruofei Hu
- College of Food Science and Technology, Hubei University of Arts and Science, Xiangyang, 441053 China
| | - Arthur J. Ragauskas
- Department of Chemical and Biomolecular Engineering, University of Tennessee-Knoxville, Knoxville, TN 37996-2200 USA
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, 430070 China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
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22
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Huang J, Xia T, Li G, Li X, Li Y, Wang Y, Wang Y, Chen Y, Xie G, Bai FW, Peng L, Wang L. Overproduction of native endo-β-1,4-glucanases leads to largely enhanced biomass saccharification and bioethanol production by specific modification of cellulose features in transgenic rice. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:11. [PMID: 30636971 PMCID: PMC6325865 DOI: 10.1186/s13068-018-1351-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 12/29/2018] [Indexed: 05/03/2023]
Abstract
BACKGROUND Genetic modification of plant cell walls has been implemented to reduce lignocellulosic recalcitrance for biofuel production. Plant glycoside hydrolase family 9 (GH9) comprises endo-β-1,4-glucanase in plants. Few studies have examined the roles of GH9 in cell wall modification. In this study, we independently overexpressed two genes from GH9B subclasses (OsGH9B1 and OsGH9B3) and examined cell wall features and biomass saccharification in transgenic rice plants. RESULTS Compared with the wild type (WT, Nipponbare), the OsGH9B1 and OsGH9B3 transgenic rice plants, respectively, contained much higher OsGH9B1 and OsGH9B3 protein levels and both proteins were observed in situ with nonspecific distribution in the plant cells. The transgenic lines exhibited significantly increased cellulase activity in vitro than the WT. The OsGH9B1 and OsGH9B3 transgenic plants showed a slight alteration in three wall polymer compositions (cellulose, hemicelluloses, and lignin), in their stem mechanical strength and biomass yield, but were significantly decreased in the cellulose degree of polymerization (DP) and lignocellulose crystalline index (CrI) by 21-22%. Notably, the crude cellulose substrates of the transgenic lines were more efficiently digested by cellobiohydrolase (CBHI) than those of the WT, indicating the significantly increased amounts of reducing ends of β-1,4-glucans in cellulose microfibrils. Finally, the engineered lines generated high sugar yields after mild alkali pretreatments and subsequent enzymatic hydrolysis, resulting in the high bioethanol yields obtained at 22.5% of dry matter. CONCLUSIONS Overproduction of OsGH9B1/B3 enzymes should have specific activity in the postmodification of cellulose microfibrils. The increased reducing ends of β-1,4-glucan chains for reduced cellulose DP and CrI positively affected biomass enzymatic saccharification. Our results demonstrate a potential strategy for genetic modification of cellulose microfibrils in bioenergy crops.
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Affiliation(s)
- Jiangfeng Huang
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010070 China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, Guangxi University, Nanning, 530004 China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Guanhua Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010070 China
| | - Xianliang Li
- College of Bioengineering, Jingchu University of Technology, Jingmen, 448000 China
| | - Ying Li
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yuanyuan Chen
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Guosheng Xie
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
| | - Feng-Wu Bai
- State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
- State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Lingqiang Wang
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070 China
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23
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Mouthier TMB, de Rink B, van Erven G, de Gijsel P, Schols HA, Kabel MA. Low liquid ammonia treatment of wheat straw increased enzymatic cell wall polysaccharide degradability and decreased residual hydroxycinnamic acids. BIORESOURCE TECHNOLOGY 2019; 272:288-299. [PMID: 30366288 DOI: 10.1016/j.biortech.2018.10.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
Ammonia treatment of lignocellulose improves carbohydrate degradability, however, low ammonia dose treatment effects and mechanisms are hardly considered. This study describes low dose ammonia treatment of wheat straw in a statistical design of experiments (Taguchi design) to evaluate the effects of ammonia concentration, treatment time and the Solid:Liquid ratio on structure, composition and enzymatic degradability of the residual fractions. The results showed that low ammonia concentration (≤2 w/w % NH3) resulted in a high carbohydrate recovery (>80%) coupled enzymatic hydrolysis of 50% of xylan and 40% of glucan of the treated material using a (hemi-) cellulase enzyme cocktail. This effect coincidences with the relative decrease in ferulic acid by 10% and coumaric acid by more than 50% analysed via pyrolysis-GC-MS, measured as 4-vinyl-phenol and 4-vinyl-guaiacol, respectively. Our findings show that lowering ammonia concentration increased the effect of treatment time on the enzymatic degradability of the residual fraction.
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Affiliation(s)
- Thibaut M B Mouthier
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Bake de Rink
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Gijs van Erven
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Peter de Gijsel
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Henk A Schols
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Mirjam A Kabel
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
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24
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Cheng S, Yu H, Hu M, Wu Y, Cheng L, Cai Q, Tu Y, Xia T, Peng L. Miscanthus accessions distinctively accumulate cadmium for largely enhanced biomass enzymatic saccharification by increasing hemicellulose and pectin and reducing cellulose CrI and DP. BIORESOURCE TECHNOLOGY 2018; 263:67-74. [PMID: 29730520 DOI: 10.1016/j.biortech.2018.04.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/02/2018] [Accepted: 04/07/2018] [Indexed: 05/06/2023]
Abstract
In this study, total eight distinct Miscanthus accessions were collected from the cadmium (Cd)-supplied soil pots, and mild alkali pretreatments (0.5%, 1% NaOH) were then performed to enhance biomass enzymatic saccharification. Due to large Cd accumulation, all Miscanthus accessions showed significantly reduced cellulose levels and features (CrI, DP) with much increased hemicellulose and pectin contents in the mature stems. Under mild alkali pretreatments, all Miscanthus samples exhibited largely increased hexoses yields released from enzymatic hydrolysis, and one desirable accession had an almost complete biomass saccharification with the hexoses yield at 100% (% cellulose). Notably, the biomass residues remained from enzymatic hydrolysis upon 1% NaOH pretreatment could absorb 73-96% Cd (% of total), suggesting an applicable approach for Cd phyto-remediation. Hence, a hypothetic model was proposed to elucidate that the enhanced biomass saccharification should be mainly due to much reduced cellulose CrI and DP in the Cd-accumulated Miscanthus accessions.
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Affiliation(s)
- Shaozhe Cheng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hua Yu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Meng Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yue Wu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangliang Cheng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiuming Cai
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Life Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China; School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.
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25
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Hu M, Yu H, Li Y, Li A, Cai Q, Liu P, Tu Y, Wang Y, Hu R, Hao B, Peng L, Xia T. Distinct polymer extraction and cellulose DP reduction for complete cellulose hydrolysis under mild chemical pretreatments in sugarcane. Carbohydr Polym 2018; 202:434-443. [PMID: 30287020 DOI: 10.1016/j.carbpol.2018.08.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/27/2018] [Accepted: 08/10/2018] [Indexed: 10/28/2022]
Abstract
In this study, liquid hot water (LHW) and chemical (H2SO4, NaOH, CaO) pretreatments were performed in Saccharum species including sugarcane bagasse. In comparison, the LHW and CaO pretreatments significantly enhanced biomass enzymatic hydrolysis, leading to much high bioethanol yield obtained at 19% (% dry matter) with an almost complete hexoses-ethanol conversion in the desirable So5 bagasse sample. Despite the LHW and CaO are distinctive for extracting hemicellulose and lignin, both pretreatments largely reduced cellulose degree of polymerization for enhanced lignocellulose enzymatic saccharification. Further chemical analysis indicated that the pretreated So5 sample had much lower cellulose crystalline index, hemicellulosic Xyl/Ara and lignin S/H ratio than those of other biomass samples, which explained that the So5 had the highest bioethanol yield among Saccharum species. Therefore, a mechanism model was proposed to elucidate how mild pretreatments could enhance biomass enzymatic saccharification for a high bioethanol production in the desirable sugarcane bagasse.
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Affiliation(s)
- Meng Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Hua Yu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Yu Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; Guangdong Provincial Bioengineering Institute (Guangzhou Sugarcane Industry Research Institute), Guangzhou 510316, China.
| | - Ao Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Qiuming Cai
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Peng Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ruofei Hu
- College of Food Science and Technology, Hubei University of Arts and Science, Xiangyang City, Hubei Province 441053, China.
| | - Bo Hao
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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26
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Zhao S, Li G, Zheng N, Wang J, Yu Z. Steam explosion enhances digestibility and fermentation of corn stover by facilitating ruminal microbial colonization. BIORESOURCE TECHNOLOGY 2018; 253:244-251. [PMID: 29353752 DOI: 10.1016/j.biortech.2018.01.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/04/2018] [Accepted: 01/05/2018] [Indexed: 06/07/2023]
Abstract
The purpose of this study was to evaluate steam explosion as a pretreatment to enhance degradation of corn stover by ruminal microbiome. The steam explosion conditions were first optimized, and then the efficacy of steam explosion was evaluated both in vitro and in vivo. Steam explosion altered the physical and chemical structure of corn stover as revealed by scanning electron microscopy (SEM) and Fourier-transform infrared (FTIR) spectroscopy, respectively, and increased its cellulose content while decreasing hemicellulose content. Steam-exploded corn stover also increased release of reducing sugars, rate of fermentation, and production of volatile fatty acids (VFAs) in vitro. The steam explosion treatment increased microbial colonization and in situ degradation of cellulose and hemicellulose of corn stover in the rumen of dairy cows. Steam explosion may be a useful pretreatment of corn stover to improve its nutritional value as forage for cattle, or as feedstock for biofuel production.
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Affiliation(s)
- Shengguo Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Guodong Li
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Nan Zheng
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jiaqi Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Zhongtang Yu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
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27
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Li Y, Zhuo J, Liu P, Chen P, Hu H, Wang Y, Zhou S, Tu Y, Peng L, Wang Y. Distinct wall polymer deconstruction for high biomass digestibility under chemical pretreatment in Miscanthus and rice. Carbohydr Polym 2018; 192:273-281. [PMID: 29691021 DOI: 10.1016/j.carbpol.2018.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 02/02/2018] [Accepted: 03/08/2018] [Indexed: 11/18/2022]
Abstract
Miscanthus is a leading bioenergy crop and rice provides enormous biomass for biofuels. Using Calcofluor White staining, this work in situ observed an initial lignocellulose hydrolysis in two distinct Miscanthus accessions, rice cultivar (NPB), and Osfc16 mutant after mild chemical pretreatments. In comparison, the M. sin and Osfc16 respectively exhibited weak Calcofluor fluorescence compared to the M. sac and NPB during enzymatic hydrolysis, consistent with the high biomass saccharification detected in vitro. Using xyloglucan-directed monoclonal antibodies (mAbs), xyloglucan deconstruction was observed from initial cellulose hydrolysis, whereas the M. sin and Osfc16 exhibited relatively strong immunolabeling using xylan-directed mAb, confirming previous findings of xylan positive impacts on biomass saccharification. Furthermore, the M. sin showed quick disappearance of RG-I immunolabeling with varied HG labelings between acid and alkali pretreatments. Hence, this study demonstrated a quick approach to explore wall polymer distinct deconstruction for enhanced biomass saccharification under chemical pretreatment in bioenergy crops.
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Affiliation(s)
- Yuyang Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Jingdi Zhuo
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Peng Liu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Peng Chen
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Huizhen Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Youmei Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Shiguang Zhou
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
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Lamb CDC, Silva BMZD, de Souza D, Fornasier F, Riça LB, Schneider RDCDS. Bioethanol production from rice hull and evaluation of the final solid residue. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2017.1422495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christiano de C. Lamb
- Environmental Technology Postgraduation Program, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | | | - Diego de Souza
- Environmental Technology Postgraduation Program, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Franccesca Fornasier
- Department of Chemistry and Physics, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Larissa Brixner Riça
- Department of Chemistry and Physics, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Rosana de Cassia de Souza Schneider
- Environmental Technology Postgraduation Program, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
- Department of Chemistry and Physics, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
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Sun D, Li Y, Wang J, Tu Y, Wang Y, Hu Z, Zhou S, Wang L, Xie G, Huang J, Alam A, Peng L. Biomass saccharification is largely enhanced by altering wall polymer features and reducing silicon accumulation in rice cultivars harvested from nitrogen fertilizer supply. BIORESOURCE TECHNOLOGY 2017; 243:957-965. [PMID: 28738551 DOI: 10.1016/j.biortech.2017.07.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/09/2017] [Accepted: 07/10/2017] [Indexed: 05/11/2023]
Abstract
In this study, two rice cultivars were collected from experimental fields with seven nitrogen fertilizer treatments. All biomass samples contained significantly increased cellulose contents and reduced silica levels, with variable amounts of hemicellulose and lignin from different nitrogen treatments. Under chemical (NaOH, CaO, H2SO4) and physical (hot water) pretreatments, biomass samples exhibited much enhanced hexoses yields from enzymatic hydrolysis, with high bioethanol production from yeast fermentation. Notably, both degree of polymerization (DP) of cellulose and xylose/arabinose (Xyl/Ara) ratio of hemicellulose were reduced in biomass residues, whereas other wall polymer features (cellulose crystallinity and monolignol proportion) were variable. Integrative analysis indicated that cellulose DP, hemicellulosic Xyl/Ara and silica are the major factors that significantly affect cellulose crystallinity and biomass saccharification. Hence, this study has demonstrated that nitrogen fertilizer supply could largely enhance biomass saccharification in rice cultivars, mainly by reducing cellulose DP, hemicellulosic Xyl/Ara and silica in cell walls.
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Affiliation(s)
- Dan Sun
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China; School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei, China
| | - Ying Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jing Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China; MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Wuhan, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zhen Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Shiguang Zhou
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Lingqiang Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Guosheng Xie
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jianliang Huang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Aftab Alam
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China. http://bbrc.hzau.edu.cn
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30
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Fan C, Feng S, Huang J, Wang Y, Wu L, Li X, Wang L, Tu Y, Xia T, Li J, Cai X, Peng L. AtCesA8-driven OsSUS3 expression leads to largely enhanced biomass saccharification and lodging resistance by distinctively altering lignocellulose features in rice. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:221. [PMID: 28932262 PMCID: PMC5603028 DOI: 10.1186/s13068-017-0911-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/08/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND Biomass recalcitrance and plant lodging are two complex traits that tightly associate with plant cell wall structure and features. Although genetic modification of plant cell walls can potentially reduce recalcitrance for enhancing biomass saccharification, it remains a challenge to maintain a normal growth with enhanced biomass yield and lodging resistance in transgenic plants. Sucrose synthase (SUS) is a key enzyme to regulate carbon partitioning by providing UDP-glucose as substrate for cellulose and other polysaccharide biosynthesis. Although SUS transgenic plants have reportedly exhibited improvement on the cellulose and starch based traits, little is yet reported about SUS impacts on both biomass saccharification and lodging resistance. In this study, we selected the transgenic rice plants that expressed OsSUS3 genes when driven by the AtCesA8 promoter specific for promoting secondary cell wall cellulose synthesis in Arabidopsis. We examined biomass saccharification and lodging resistance in the transgenic plants and detected their cell wall structures and wall polymer features. RESULTS During two-year field experiments, the selected AtCesA8::SUS3 transgenic plants maintained a normal growth with slightly increased biomass yields. The four independent transgenic lines exhibited much higher biomass enzymatic saccharification and bioethanol production under chemical pretreatments at P < 0.01 levels, compared with the controls of rice cultivar and empty vector transgenic line. Notably, all transgenic lines showed a consistently enhanced lodging resistance with the increasing extension and pushing forces. Correlation analysis suggested that the reduced cellulose crystallinity was a major factor for largely enhanced biomass saccharification and lodging resistance in transgenic rice plants. In addition, the cell wall thickenings with the increased cellulose and hemicelluloses levels should also contribute to plant lodging resistance. Hence, this study has proposed a mechanistic model that shows how OsSUS3 regulates cellulose and hemicelluloses biosyntheses resulting in reduced cellulose crystallinity and increased wall thickness, thereby leading to large improvements of both biomass saccharification and lodging resistance in transgenic rice plants. CONCLUSIONS This study has demonstrated that the AtCesA8::SUS3 transgenic rice plants exhibited largely improved biomass saccharification and lodging resistance by reducing cellulose crystallinity and increasing cell wall thickness. It also suggests a powerful genetic approach for cell wall modification in bioenergy crops.
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Affiliation(s)
- Chunfen Fan
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Shengqiu Feng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiangfeng Huang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Leiming Wu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xukai Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Lingqiang Wang
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jingyang Li
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- HaiKou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, 570102 China
| | - Xiwen Cai
- Department of Plant Science, North Dakota State University, Fargo, ND USA
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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