Author/Authors :
Gao، نويسنده , , Chao and Qiu، نويسنده , , Jianhua and Li، نويسنده , , Jingchen and Ma، نويسنده , , Cuiqing and Tang، نويسنده , , Hongzhi and Xu، نويسنده , , Ping، نويسنده ,
Abstract :
d-Lactic acid and pyruvic acid are two important building block intermediates. Production of d-lactic acid and pyruvic acid from racemic lactic acid by biotransformation is economically interesting. Biocatalyst prepared from 9 g dry cell wt l−1 of Pseudomonas stutzeri SDM could catalyze 45.00 g l−1 dl-lactic acid into 25.23 g l−1 d-lactic acid and 19.70 g l−1 pyruvic acid in 10 h. Using a simple ion exchange process, d-lactic acid and pyruvic acid were effectively separated from the biotransformation system. Co-production of d-lactic acid and pyruvic acid by enantioselective oxidation of racemic lactic acid is technically feasible.
Keywords :
D-Lactic acid , enantioselective oxidation , Lactate oxidase components , pyruvic acid , Separation
