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Optimization of fermentation conditions for carbonyl reductase production by Pseudomonas putida
Author(s): 
Pages: 243-248
Year: Issue:  4
Journal: FAJIAO KEJI TONGXUN

Keyword:  恶臭假单胞菌羰基还原酶菌种筛选(R)-1-(2-三氟甲基苯基)乙醇培养基优化;
Abstract: 从土样中筛选得到一株产羰基还原酶的菌种恶臭假单胞菌(Pseudomonas putida)ZJPH1606,该菌能不对称催化2′-三氟甲基苯乙酮合成(R)-1-(2-三氟甲基苯基)乙醇,对映体过量值超过99.0%.通过单因素考察产酶培养基组成发现:葡萄糖、牛肉膏和MgSO4·7H2 O对酶活的影响较为明显,进一步采用响应面法对产酶培养基进行了优化.结果表明:最优发酵培养基组成为葡萄糖38.5g/L,牛肉膏32.7g/L,MgSO4·7H2O1.1g/L.在最适培养条件下,菌体酶活力达0.31U/g,较优化前提高了71.0%.该研究结果丰富了羰基还原酶数据库的基因序列,为高效合成(R)-1-(2-三氟甲基苯基)乙醇提供了新途径.
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