Butanol production by Clostridium beijerinckii ATCC 55025 from wheat bran.
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.
Liu
Ziyong
Z
Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, People's Republic of China.
Ying
Yu
Y
Li
Fuli
F
Ma
Cuiqing
C
Xu
Ping
P
D000096:Acetone / Q000378:metabolism; D000440:Butanols / Q000378:metabolism*; D046970:Clostridium beijerinckii / Q000378:metabolism*; D004043:Dietary Fiber / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism; D005285:Fermentation; D005947:Glucose / Q000378:metabolism; D007218:Industrial Microbiology; D013213:Starch / Q000378:metabolism; D013464:Sulfuric Acids / Q000378:metabolism; D014994:Xylose / Q000378:metabolism
D000440:Butanols; D004043:Dietary Fiber; D013464:Sulfuric Acids; D000096:Acetone; D000431:Ethanol; D013213:Starch; D014994:Xylose; D005947:Glucose; C033158:sulfuric acid
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