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High Productivity Ethanol from Solid-State Fermentation of Steam-Exploded Corn Stover Using Zymomonas mobilis by N-2 Periodic Pulsation Process Intensification

文献类型：期刊论文

作者Sun, Lele1,2; Wang, Lan2; Chen, Hongzhang2
刊名APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
出版日期2020-05-12
页码16
关键词Lignocellulosic ethanol Solid-state fermentation N-2 periodic pulsation process intensification Zymomonas mobilis Simultaneous saccharification fermentation Periodic peristalsis Steam explosion
ISSN号0273-2289
DOI10.1007/s12010-020-03318-6
英文摘要Solid-state fermentation, featured by water-saving, eco-friendly and high concentration product, is a promising technology in lignocellulosic ethanol industry. However, in solid-state fermentation system, large gas content inside the substrate directly leads to high oxygen partial pressure and inhibits ethanol fermentation. Z. mobilis can produce ethanol from glucose near the theoretical maximum value, but this ethanol yield would be greatly decreased by high oxygen partial pressure during solid-state fermentation. In this study, we applied N-2 periodic pulsation process intensification (NPPPI) to ethanol solid-state fermentation, which displaced air with N-2 and provided a proper anaerobic environment for Z. mobilis. Based on the water state distribution, the promotion effects of NPPPI on low solid loading and solid-state fermentation were analyzed to confirm the different degrees of oxygen inhibition in ethanol solid-state fermentation. During the simultaneous saccharification solid-state fermentation, the NPPPI group achieved 45.29% ethanol yield improvement and 30.38% concentration improvement compared with the control group. NPPPI also effectively decreased 58.47% of glycerol and 84.24% of acetic acid production and increased the biomass of Z. mobilis. By coupling the peristaltic enzymatic hydrolysis and fed-batch culture, NPPPI made the ethanol yield and concentration reach 80.11% and 55.06 g/L, respectively, in solid-state fermentation.
WOS关键词ENZYMATIC-HYDROLYSIS ; SIMULTANEOUS SACCHARIFICATION ; BIOETHANOL PRODUCTION ; OXYGEN ; TEMPERATURE ; PERFORMANCE ; GAS ; TECHNOLOGIES ; INCUBATOR ; CELLULOSE
资助项目National Key Research and Development Program of China[2018YFB1501702] ; Transformational Technologies for Clean Energy and Demonstration (Strategic Priority Research Program of the Chinese Academy of Sciences)[No.XDA 21060300]
WOS研究方向Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology
语种英语
WOS记录号WOS:000532100500001
出版者SPRINGER
资助机构National Key Research and Development Program of China ; Transformational Technologies for Clean Energy and Demonstration (Strategic Priority Research Program of the Chinese Academy of Sciences)
源URL[http://ir.ipe.ac.cn/handle/122111/40567]  
专题中国科学院过程工程研究所
通讯作者Wang, Lan
作者单位1.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing Key Lab Biomass Refining Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Lele,Wang, Lan,Chen, Hongzhang. High Productivity Ethanol from Solid-State Fermentation of Steam-Exploded Corn Stover Using Zymomonas mobilis by N-2 Periodic Pulsation Process Intensification[J]. APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY,2020:16.
APA Sun, Lele,Wang, Lan,&Chen, Hongzhang.(2020).High Productivity Ethanol from Solid-State Fermentation of Steam-Exploded Corn Stover Using Zymomonas mobilis by N-2 Periodic Pulsation Process Intensification.APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY,16.
MLA Sun, Lele,et al."High Productivity Ethanol from Solid-State Fermentation of Steam-Exploded Corn Stover Using Zymomonas mobilis by N-2 Periodic Pulsation Process Intensification".APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY (2020):16.

入库方式： OAI收割

来源：过程工程研究所

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