Continuous butanol fermentation from inexpensive sugar-based feedstocks by Clostridium saccharobutylicum DSM 13864
2013
Ni, Ye | Xia, Ziyi | Wang, Yun | Sun, Zhihao
Corn stover hydrolysate (CSH) and cane molasses were studied for butanol fermentation by Clostridium saccharobutylicum DSM 13864 in continuous fermentation. Using cane molasses as substrate, solvent of 13.75g/L (butanol 8.65g/L) and productivity of 0.439g/L/h were achieved in a four-stage continuous fermentation at a gradient dilution mode of 0.15–0.15–0.125–0.1h−1. In continuous fermentation using CSH as substrate, total solvent titer of 11.43g/L (butanol 7.81g/L) and productivity of 0.429g/L/h were reached at a dilution rate of 0.15h−1, and the steady process was continuously operated for 220h without compromise in solvent titer.
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