Enterococcus faecalis RKY1의 회분식 발효를 통한 수크로스로부터 L(+)-Lactic acid의 생산

Lactic acid fermentation from sucrose as a carbon source was experimented. E. faecalis RKY1 metabolized sucrose efficiently into lactic acid through homolactic fermentation pathway. The optimal sucrose concentration for lactic acid production was found to be 150 g/l with the yield and productivity of 0.97 g/g and $3.7\;g/l\;{\cdot}\;h$, respectively. Lactic acid produced from sucrose was almost L(+)-lactic acid up to 98% based on total lactic acid produced. Therefore, sucrose was thought to be potential carbon source for L(+)-lactic acid production using E. faecalis RKY1.