Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6664070 | Journal of Environmental Chemical Engineering | 2018 | 24 Pages |
Abstract
Co-culture of Clostridium acetobutylicum and Saccharomyces cerevisiae was used to enhance solvents (acetone-butanol-ethanol, ABE) production from cassava without amylolytic enzymes addition. Under the simultaneous inoculation condition of C. acetobutylicum and S. cerevisiae with the inoculation level of 5% (v/v) for both strains, 21.74Â g/L solvents was produced from 75Â g/L cassava with the yield of 0.36Â g solvents/g glucose. The solvents titer and yield obtained in the co-culture process increased by 14.3% and 9.1%, respectively, compared to those achieved in ABE fermentation. For further improvements in total solvents titer and yield from cassava, ABE fermentation and co-culture process from higher cassava concentration media were conducted. 42.56Â g/L total solvents was achieved from 150Â g/L cassava by co-culture with the yield of 0.46Â g solvents/g glucose. The solvents titer and yield obtained in the co-culture process increased by 141.0% and 43.8%, respectively, compared to those obtained from ABE fermentation. The results showed great potential for the use of co-culture of C. acetobutylicum and S. cerevisiae for solvents production from starchy substrate.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Gaoxiang Qi, Lian Xiong, Mutan Luo, Qianlin Huang, Chao Huang, Hailong Li, Xuefang Chen, Xinde Chen,