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PLoS By Category | Recent
PLoS Articles
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Biochemistry - Biotechnology - Microbiology
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Efficient 2,3-Butanediol Production from Cassava Powder by a Crop-Biomass-Utilizer, Enterobacter cloacae subsp. dissolvens SDM
Published:
Thursday, July 05, 2012
Author:
Ailong Wang et al.
by Ailong Wang, Youqiang Xu, Cuiqing Ma, Chao Gao, Lixiang Li, Yu Wang, Fei Tao, Ping Xu
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. Methodology/Principal Findings 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/Significance 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. 
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