EFFECT OF CORN STALK HYDROLYSATE BY-PRODUCT ON L-LACTIC ACID FERMENTATION
During the liquid hot water pretreatment (LHW) of corn stalk, hemicellulose is hydrolyzed to monosaccharide, meanwhile, the by-products that may influence L-lactic acid fermentation are generated. In this study, one by-product, acetic acid, was identified in the hydrolysate of local corn stalk. The concentrations of acetic acid were high. The work indicated that L-lactic acid production was inhibited by the presence of acetic acid, and severe inhibition was observed at the concentration of 4 g/l, which was the half of the concentration for acetic acid in hydrolysate. A longer lag-phase for the growth of cells was caused when the concentration of acetic acid was 3 g/l, while no lag-phase was observed at lower concentration of 1 g/l.
corn stalk hydrolysis by-products glucose L(+)-lactic acid
Liu Zhe Yang Ruifeng Lu Jie Chen Lifeng Bu Lingxi
Liaoning Key Laboratory of Pulp & Paper, Dalian Polytechnic University, Dalian, 116034, China Liaoning Key Laboratory of Pulp & Paper, Dalian Polytechnic University, Dalian, 116034, China State
国际会议
广州
英文
1373-1376
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）