Ultrasound-promoted Lipase-catalyzed Enantioselective Transesterification of (R,S)-Glycidol

作者：An Bai yi; Xie Xiao na; Xun Er na; Wang Jia xin; Wang Ren; Sun Ruo xi; Wang Lei^*; Wang Zhi

来源：Chemical Research in Chinese Universities, 2011, 27(5): 845-849.

• Activity
• Enantioselectivity
• Glycidol
• Lipase
• Resolution
• Ultrasound

Enantioselective transesterification of glycidol with vinyl butyrate as an acyl donor was investigated in the presence of Bacillus subtilis lipase(BSL2) as catalyst. Comparison studies demonstrate the advantage of ultrasound over the conventional shaking for the enzymatic reaction in non-aqueous media. The effects of reaction conditions(ultrasound power, temperature, water activity and pH) on the activity and enantioselectivity were also investigated. Under the optimum conditions, the synthetic activity of BSL2 was 2.95 mu mol.min(-1).mg(-1) and the enantioselectivity(E value) was 52.2. Compared with conventional shaking, ultrasound made the synthetic activity and the enantioselectivity increase 9.5-fold and 1.4-fold, respectively. Furthermore, the repeated use of BSL2 for five cycles resulted in no obvious loss of enzyme activity, suggesting that the enzyme is stable under low power ultrasound conditions.

• 出版日期2011-9
• 单位吉林大学