标题：Butanol production by Clostridium beijerinckii ATCC 55025 from wheat bran
作者：Liu, Ziyong; Ying, Yu; Li, Fuli; Ma, Cuiqing; Xu, Ping
作者机构：[Liu, Ziyong; Ying, Yu; Li, Fuli] Chinese Acad Sci, Key Lab Biofuels, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China.; [M 更多
通讯作者地址：[Li, FL]Chinese Acad Sci, Key Lab Biofuels, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China.
来源：JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
关键词：Wheat bran; Dilute sulfuric acid pretreatment; Butanol; Clostridium; beijerinckii ATCC 55025
摘要：Wheat bran, a by-product of the wheat milling industry, consists mainly of hemicellulose, starch and protein. In this study, the hydrolysate of wheat bran pretreated with dilute sulfuric acid was used as a substrate to produce ABE (acetone, butanol and ethanol) using Clostridium beijerinckii ATCC 55025. The wheat bran hydrolysate contained 53.1 g/l total reducing sugars, including 21.3 g/l of glucose, 17.4 g/l of xylose and 10.6 g/l of arabinose. C. beijerinckii ATCC 55025 can utilize hexose and pentose simultaneously in the hydrolysate to produce ABE. After 72 h of fermentation, the total ABE in the system was 11.8 g/l, of which acetone, butanol and ethanol were 2.2, 8.8 and 0.8 g/l, respectively. The fermentation resulted in an ABE yield of 0.32 and productivity of 0.16 g l(-1) h(-1). This study suggests that wheat bran can be a potential renewable resource for ABE fermentation.