Evaluation of four Candida utilis strains for biomass, acetic acid and ethyl acetate production from ethanol

摘要

Four Candida utilis strains were screened for biomass, acetic acid and ethyl acetate production from ethanol as sole carbon source. After 72 h at 30 deg C, analytical results obtained with 16 gl~(-1) and 32 gl~(-1) of initial ethanol concentration were compared. The stain L/375-1 was selected for its best yield of ethyl acetate from ethanol, while the strain L/375-5 was the best biomass producer. These two strains displayed ethanol consumption rates of 0.156 g l~(-1) h~(-1) and 0.179 g l~(-1) h~(-1) at 32 gl~(-1) initial ethanol concentration, respectively. Slight differences were observed in terms of ethanol consumption rate and product yield according to the initial ethanol concentration and the strains.