Batch production of butyric acid using a newly isolated strain from old fermented sheep dung
- Batch production of butyric acid using a newly isolated strain from old fermented sheep dung
- 드위달; 박재연; 전병승; 김세일; 엄영순; 상병인
- butyric acid; sucrose; fermentation; Clostridium beijerinckii; Clostridium diolis
- Issue Date
- 2010 Renewable Energy Conference, Yokohama, Japan
- A newly isolated Clostridium strain (CGP4) with a high potential for industrial scale butyric acid production was obtained from old fermented sheep dung. In batch fermentation using sucrose as the sole carbon source in Reinforced Clostridial Medium (RCM), we could get a final concentration of 23.3 g/L butyric acid with a yield of 0.46 g butyric acid/g sucrose and productivity equals 0.5 g butyric acid/L/hr. In fed-batch fermentation, the final butyrate concentration was 25.1 g/L. The optimum pH and temperature were 6.0 and 34℃ respectively. From the phylogenetic analysis of this strain, the closest relatives are Clostridium diolis DSM 5431 (99.575%), and Clostridium beijerinckii NCIMB 8052 (99.363%).
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