Kinetic resolution of ketoprofen ester catalyzed by lipase from a mutant of CBS 5791
- Key Words:microbial hydrolysis; biotransformation; lipase; enantioselective resolution; ketoprofen
- Abstract:A biotransformation process was developed for the production of (S)-ketoprofen by enantioseletive hydrolysis of racemic ketoprofen ester using the mutant Trichosporon laibacchii strain CBS 5791. A satisfactory result was obtained, in which the E was 82.5, with an ee of 0.94 and a conversion of 0.47 under the optimum hydrolysis conditions [E is enantiomeric ratio, E=ln[1-X(1+ee)]/ln[1-X(1-ee)]; ee is enantiomeric excess, ee=(C-S-C-R)/(C-S+C-R): temperature of hydrolysis was 23degreesC]. The medium used in biotransformation was a mixture of growth broth and biotransformation broth at a ratio of 1:9, the concentration of Tween 80 was 15 g/l, the time of hydrolysis, 72 h. These results are promising for further scale-up. Tween 80 significantly improved lipase enantioselectivity and activity at the optimum concentration.
- Volume:31
- Issue:11
- Translation or Not:no
Next One:
对苯二甲醚绿色合成工艺研究