A study of CO/syngas bioconversion by Clostridium autoethanogenum with a flexible gas-cultivation system

doi:10.1016/j.enzmictec.2017.03.002

GIEC OpenIR > 中国科学院广州能源研究所

	A study of CO/syngas bioconversion by Clostridium autoethanogenum with a flexible gas-cultivation system
	Xu, Huijuan1 ; Liang, Cuiyi1 ; Yuan, Zhenhong1 ; Xu, Jingliang1 ; Hua, Qiang 2; Guo, Ying1
	2017-06-01
发表期刊	ENZYME AND MICROBIAL TECHNOLOGY
卷号	101 页码:24-29
摘要	Bioconversion of CO/syngas to produce ethanol is a novel route in bioethanol production, which can be accomplished by some acetogens. Specific culture vessels and techniques are needed to cultivate these microorganisms since they are anaerobic and substrates are gaseous. In this work, gas-sampling bag was applied as a gas-cultivation system to study CO/syngas bioconversion by Clostridium autoethanogenum and was demonstrated to be efficient because of its flexibility and excellent ability to maintain the headspace atmosphere. C autoethanogenum can use CO as the sole carbon and energy source to produce ethanol, acetate as well as CO2. In the experimental range, higher ethanol production was favored by higher yeast extract concentrations, and the maximum ethanol concentration of 3.45 g/L was obtained at 1.0 g/L of yeast extract. Study with various bottled gases showed that C. autoethanogenum preferred to use CO other than CO2 and produced the highest level of ethanol with 100% CO as the substrate. C. autoethanogenum can also utilize biomass-generated syngas (36.2% CO, 23.0% H-2, 15.4% CO2, 11.3% N-2), but the process proceeded slowly and insufficiently due to the presence of O-2 and C2H2. In our study, C. autoethanogenum showed a better performance in the bioconversion of CO to ethanol than Clostridium ljungdahlii, a strain which has been most studied, and for both strains, ethanol production was promoted by supplementing 0.5 g/L of acetate. (C) 2017 Elsevier Inc. All rights reserved.
文章类型	Article
关键词	Syngas Fermentation Ethanol Gas-cultivation System Carbon Monoxide
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1016/j.enzmictec.2017.03.002
研究领域[WOS]	Biotechnology & Applied Microbiology
关键词[WOS]	CARBON-MONOXIDE ; ETHANOL-PRODUCTION ; BIOLOGICAL PRODUCTION ; SYNGAS FERMENTATION ; ANAEROBIC BACTERIUM ; GASEOUS FUELS ; YEAST EXTRACT ; SP-NOV ; LJUNGDAHLII ; PRESSURE
收录类别	SCI
语种	英语
项目资助者	National High-tech RD Program(2015AA020202) ; Science & Technology Program of Guangzhou(201414100220) ; Open Funding Project of the State Key Laboratory of Bioreactor Engineering(20140PEN10) ; Fund of CAS Key Laboratory of Renewable Energy(y107j4)
WOS类目	Biotechnology & Applied Microbiology
WOS记录号	WOS:000401047200004
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/14121
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou, Guangdong, Peoples R China 2.East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Xu, Huijuan,Liang, Cuiyi,Yuan, Zhenhong,et al. A study of CO/syngas bioconversion by Clostridium autoethanogenum with a flexible gas-cultivation system[J]. ENZYME AND MICROBIAL TECHNOLOGY,2017,101:24-29.
APA	Xu, Huijuan,Liang, Cuiyi,Yuan, Zhenhong,Xu, Jingliang,Hua, Qiang,&Guo, Ying.(2017).A study of CO/syngas bioconversion by Clostridium autoethanogenum with a flexible gas-cultivation system.ENZYME AND MICROBIAL TECHNOLOGY,101,24-29.
MLA	Xu, Huijuan,et al."A study of CO/syngas bioconversion by Clostridium autoethanogenum with a flexible gas-cultivation system".ENZYME AND MICROBIAL TECHNOLOGY 101(2017):24-29.