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立体选择性脂肪酶的筛选及其在薄荷醇拆分中的应用
引用本文:徐刚,李牧,孙苗苗,吴坚平,杨立荣. 立体选择性脂肪酶的筛选及其在薄荷醇拆分中的应用[J]. 生物加工过程, 2013, 11(1): 1-4
作者姓名:徐刚  李牧  孙苗苗  吴坚平  杨立荣
作者单位:浙江大学化学工程与生物工程学系
基金项目:国家重点基础研究发展计划(973计划)资助(2011CB710800);国家高技术研究发展计划(863计划)资助(2011AA02A209);国家自然科学基金重点项目资助(20936022)
摘    要:采用双平板透明圈方法,筛选得到1株能够选择性水解L-薄荷醇丙酸酯的微生物。通过16sDNA测序,鉴定为产碱假单胞菌Pseudomonas alcaligenes。该菌所产脂肪酶可水解4对薄荷醇丙酸酯,在35℃时绝对转化率达到50%时,表现出较高的对映体过量值(e.e.p〉99%)与非对映体过量值(d.e.p〉90%)。这一结果表明,产碱假单胞菌脂肪酶是具有工业应用前景的生物催化剂。

关 键 词:脂肪酶  L-薄荷醇  筛选  产碱假单肥菌  立体选择性

Screening of stereoselective lipase and its application in resolution of menthol
XU Gang,LI Mu,SUN Miaomiao,WU Jianping,YANG Lirong. Screening of stereoselective lipase and its application in resolution of menthol[J]. Chinese Journal of Bioprocess Engineering, 2013, 11(1): 1-4
Authors:XU Gang  LI Mu  SUN Miaomiao  WU Jianping  YANG Lirong
Affiliation:(Department of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China)
Abstract:A strain with stereoseleetive hydrolying L-menthyl propionate was screened by double-plate screening method. It was identified as Pseudomonas alcaligenes by 16sDNA sequencing. The high enantiomeric excess (e. e.e〉 99% ) and diastereomerie excess (d. e.p〉 90% ) were achieved when the conversion of L-menthyl propionate reached 50% at 35 ℃. The results showed that the effective biocatalyst had a potential industrial application.
Keywords:lipase  L-menthol  screening  Pseudomonas alcaligenes  stereoselectivity
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