원문정보
초록
영어
The medium composition for butanol production by Clostridium pasteurianum DSM525 was optimized using response surface methodology (RSM). A fractional factorial design (FFD) for a total six variables (phosphate buffer, MnSO4·H2O, MgSO4·7H2O, FeSO4·7H2O, yeast extract, and (NH4)2SO4) was applied to identify which variables have significant effect on butanol production. After FFD experiment, FeSO4·7H2O, yeast extract, and (NH4)2SO4 were identified to be the most significant factors. Steepest ascent experiments were applied to estimate the optimal region of the three factors and the central composite experimental design (CCD) was adopted to determine their optimized values. The composition of optimal medium for butanol production
by C. pasteurianum DSM525 was 0.5 g of K2HPO4-KH2PO4, 0.2 g of MnSO4·H2O, 0 g of MgSO4·7H2O, 0.03 g of FeSO4·7H2O, 8~10 g of (NH4)2SO4, 2.7 g of yeast extract per 1 L distilled water. After incubating 48 hours in the optimal composition medium, the final butanol oncentration
was 5.8 g/L which was higher than butanol production (4.5 g/L) with the modified P2 medium which is known for butanol production medium.