Enhanced butanol production by coculture of Clostridium beijerinckii-and Clostridium tyrobutyricum

被引：60

作者：

Li, Lin ^{[1
]}

Ai, Hongxia ^{[1
]}

Zhang, Shexi ^{[1
]}

Li, Shuang ^{[1
]}

Liang, Zexin ^{[1
]}

Wu, Zhen-Qiang ^{[1
]}

Yang, Shang-Tian ^{[2
]}

Wang, Ju-Fang ^{[1
]}

机构：

[1] S China Univ Technol, Sch Biosci & Bioengn, Guangzhou 510006, Guangdong, Peoples R China

[2] Ohio State Univ, Dept Chem Engn, Columbus, OH 43210 USA

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 143卷

关键词：

Acetone-butanol-ethanol fermentation; Coculture; Fibrous-bed bioreactor; Free-cell fermentation; Immobilized-cell fermentation; FIBROUS-BED BIOREACTOR; BUTYRIC-ACID PRODUCTION; ETHANOL-PRODUCTION; IMMOBILIZED CELLS; CANE MOLASSES; FERMENTATION; ACETONE; ACETOBUTYLICUM; CULTURE; CORN;

D O I：

10.1016/j.biortech.2013.06.023

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Cocultures of Clostridium beijerinckii and Clostridium tyrobutyricum in free-cell and immobilized-cell fermentation modes were investigated as a means of enhancing butanol production. The immobilized fermentation was performed in a fibrous-bed bioreactor (FBB). The results demonstrated that two-strain coculture significantly enhanced butanol production, yield and volumetric productivity compared with those in pure culture with or without butyric acid. Further, continuous immobilized-cell cocultures in two FBBs using glucose, cassava starch, or cane molasses were conducted at a dilution rate of 0.144 h(-1). The butanol production (6.66 g/L), yield (0.18 g/g), and productivity (0.96 g/L/h) were obtained with cassava starch as the substrate. Meanwhile, the acetone-butanol-ethanol (ABE) yield (0.36 g/g) was the highest among all processes investigated, suggesting that this continuous coculture mode may be suitable for industrial ABE production with no need for repeated sterilization and inoculation. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：397 / 404

页数：8

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