Efficient 2,3-butanediol production from cassava powder by a crop-biomass-utilizer, Enterobacter cloacae subsp. dissolvens SDM.
BACKGROUND
2,3-Butanediol (BD) is considered as one of the key platform chemicals used in a variety of industrial applications. It is crucial to find an efficient sugar-utilizing strain and feasible carbon source for the economical production of BD.


RESULTS
Efficient BD production by a newly isolated Enterobacter cloacae subsp. dissolvens SDM was studied using crop-biomass cassava powder as substrate. The culture conditions and fermentation medium for BD production were optimized. Under the optimal conditions, 78.3 g l(-1) of BD was produced after 24 h in simultaneous saccharification and fermentation (SSF), with a yield of 0.42 g BD g(-1) cassava powder and a specific productivity of 3.3 g l(-1) h(-1). A higher BD concentration (93.9 g l(-1)) was produced after 47 h in fed-batch SSF.


CONCLUSIONS
The results suggest that strain SDM is a good candidate for the BD production, and cassava powder could be used as an alternative substrate for the efficient production of BD.
State Key Laboratory of Microbial Technology, Shandong University, Jinan, People's Republic of China.
Ailong
A
Wang
Youqiang
Y
Xu
Cuiqing
C
Ma
Chao
C
Gao
Lixiang
L
Li
Yu
Y
Wang
Fei
F
Tao
Ping
P
Xu
D000704:Analysis of Variance; D019149:Bioreactors; D002072:Butylene Glycols / Q000378:metabolism*; D003470:Culture Media; D016972:Enterobacter cloacae / Q000378:metabolism*; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D002365:Manihot / Q000737:chemistry*; D017672:Nitrogen Compounds / Q000378:metabolism; D010936:Plant Extracts / Q000378:metabolism*; D012044:Regression Analysis
D002072:Butylene Glycols; D003470:Culture Media; D017672:Nitrogen Compounds; D010936:Plant Extracts; C026978:2,3-butylene glycol