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Liu W, Liu P, Liu L, Sun H, Fan Y, Ma C, Ouyang J, Zheng Z. Promoting microbial fermentation in lignocellulosic hydrolysates by removal of inhibitors using MTES and PEI-modified chitosan-chitin nanofiber hybrid aerogel. Carbohydr Polym 2024; 328:121766. [PMID: 38220334 DOI: 10.1016/j.carbpol.2023.121766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/26/2023] [Accepted: 12/28/2023] [Indexed: 01/16/2024]
Abstract
To further enhance the removal efficiency for furanic and phenolic compounds in lignocellulosic hydrolysates, a new detoxification strategy was proposed, which retained fermentable sugars and promoted the growth and metabolism of subsequent bacteria. The best adsorbent (P/M-CCA) was prepared by hybrid chitosan-chitin nanofiber, graft modification with polyethylenimine, and silanization with methyl triethoxylsilane in order. Taken corn cob hydrolysate as object, the removal rates of HMF and furfural were 85.1 % and 99.0 %, respectively. The removal rates of six out of nine phenolic inhibitors were 100 %, and the other three were more than 65 %. Even better, the retention rates of glucose and xylose were both 100 %. In contrast to no growth in undetoxified hydrolysates, Bacillus coagulans grew normally in detoxified hydrolysates, and lactic acid reached 19.1 g/L after 12 h fermentation. P/M-CCA achieves both removal of multiple inhibitors and retain sugars, which would promote the valorization of highly toxic lignocellulosic hydrolysates.
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Affiliation(s)
- Wen Liu
- Nanjing Forestry University, Longpan Road 159, Nanjing, People's Republic of China
| | - Peng Liu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People's Republic of China
| | - Liang Liu
- Nanjing Forestry University, Longpan Road 159, Nanjing, People's Republic of China.
| | - Huimin Sun
- Nanjing Forestry University, Longpan Road 159, Nanjing, People's Republic of China
| | - Yimin Fan
- Nanjing Forestry University, Longpan Road 159, Nanjing, People's Republic of China.
| | - Cuiqing Ma
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, People's Republic of China.
| | - Jia Ouyang
- Nanjing Forestry University, Longpan Road 159, Nanjing, People's Republic of China.
| | - Zhaojuan Zheng
- College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, People's Republic of China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China.
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Jawad M, Wang H, Wu Y, Rehman O, Song Y, Xu R, Zhang Q, Gao H, Xue C. Lignocellulosic ethanol and butanol production by Saccharomyces cerevisiae and Clostridium beijerinckii co-culture using non-detoxified corn stover hydrolysate. J Biotechnol 2024; 379:1-5. [PMID: 37944902 DOI: 10.1016/j.jbiotec.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
Considering global economic and environmental -benefits, green renewable biofuels such as ethanol and butanol are considered as sustainable alternatives to fossil fuels. Thus, developing a co-culture strategy for ethanol and butanol production by Saccharomyces cerevisiae and Clostridium beijerinckii has emerged as a promising approach for biofuel production from lignocellulosic biomass. This study developed a co-culture of S. cerevisiae and C. beijerinckii for ethanol and butanol production from non-detoxified corn stover hydrolysate. By firstly inoculating 3 % S. cerevisiae and then 7 % C. beijerinckii with 8-10 h time intervals, the optimized co-culture process gave 24.0 g/L ABE (20.8 g/L ethanol and 2.4 g/L butanol), obtaining ABE yield and productivity of 0.421 g/g and 0.55 g/L/h. The demonstrated co-culture strategy made full use of hexose and pentose in hydrolysate and contributed to total yield and efficiency compared to conventional ethanol or ABE fermentation, indicating its great potential for developing economically feasible and sustainable bioalcohols production.
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Affiliation(s)
- Muhammad Jawad
- MOE Key Laboratory of Bio-Intelligent Manufacturing, Engineering Research Center of Application and Transformation for Synthetic Biology, School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Huan Wang
- MOE Key Laboratory of Bio-Intelligent Manufacturing, Engineering Research Center of Application and Transformation for Synthetic Biology, School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Youduo Wu
- MOE Key Laboratory of Bio-Intelligent Manufacturing, Engineering Research Center of Application and Transformation for Synthetic Biology, School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China; Ningbo Institute of Dalian University of Technology, Ningbo 315016, China.
| | - Omama Rehman
- MOE Key Laboratory of Bio-Intelligent Manufacturing, Engineering Research Center of Application and Transformation for Synthetic Biology, School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Yongxiu Song
- Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
| | - Rui Xu
- Yunnan Provincial Rural Energy Engineering Key Laboratory, Kunming 650600, China
| | - Quan Zhang
- SINOPEC Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd., Dalian 116041, China
| | - Huipeng Gao
- SINOPEC Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd., Dalian 116041, China
| | - Chuang Xue
- MOE Key Laboratory of Bio-Intelligent Manufacturing, Engineering Research Center of Application and Transformation for Synthetic Biology, School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China; Ningbo Institute of Dalian University of Technology, Ningbo 315016, China.
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