| 초록 |
Hexanoic acid has an advantage to be converted to hexanol, used as fuel, by simple catalytic process. Megasphaera elsdenii produces hexanoic acid during the anaerobic fermentation from sucrose, which is a suitable carbon source for industrial production. The objective of this study was to find the factors that influence the production of hexanoic acid of Megasphaera elsdenii. In a medium containing acetate and butyrate, increase of hexanoic acid production was shown. When 10 g/L of sodium acetate and sodium butyrate was individually added, hexanoic acid production increased up to 6.8 g/L and 6.7 g/L, respectively. In a medium including 5 g/L of sodium acetate and 5 g/L of sodium butyrate together, hexanoic acid production increase up to 7.3 g/L. The effect of pH was investigated as well. When the initial pH was 6.5, the growth rate increased but less hexanoic acid, 5.7 g/L, was produced. Otherwise when the initial pH was 7.0, the production of hexanoic acid was 6.3 g/L. As results, the medium composition for the production of hexanoic acid was optimized by response surface methodology. |
