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一株烟腈水解酶菌株的筛选及其催化特性初步研究
引用本文:何玉财,周琼,张跃,王龙耀,王利群,高大舟,郑明,赵希岳,卢彬,丁亮.一株烟腈水解酶菌株的筛选及其催化特性初步研究[J].化工进展,2011,30(12):2714.
作者姓名:何玉财  周琼  张跃  王龙耀  王利群  高大舟  郑明  赵希岳  卢彬  丁亮
作者单位:常州大学制药与生命科学学院生物工程研究室,江苏 常州 213164
基金项目:国家自然科学基金(21102011); 江苏省社会发展项目(BE2009637); 常州市生物医药科技专项(CE20115051); 常州大学人才引进基金(ZMF10020077)及常州大学大学生创新基金(10-化-A-11)项目
摘    要:利用富集培养技术筛选获得一株高活性烟腈水解菌株Rhodococcus sp. CCZU10-1。经研究,最适产酶培养条件和催化反应条件为:碳源为葡萄糖(10 g/L),氮源为酵母蛋白胨(10 g/L)与酵母膏(5 g/L),诱导剂ε-己内酰胺(2.0 mmol/L),培养温度为30 ℃,初始培养pH值为7.0,最适催化反应温度和pH值分别为30 ℃和7.0。分批补料烟腈10批,烟酸的累计浓度为927 mmol/L。

关 键 词:烟腈  烟酸  Rhodococcussp.CCZU10-1  筛选  催化特性

Isolation and catalytic characteristics of a 3-cyanopyridinehydrolyzing strain
HE Yucai,ZHOU Qiong,ZHANG Yue,WANG Longyao,WANG Liqun,GAO Dazhou,ZHENG Ming,ZHAO Xiyue,LU Bin,DING Liang.Isolation and catalytic characteristics of a 3-cyanopyridinehydrolyzing strain[J].Chemical Industry and Engineering Progress,2011,30(12):2714.
Authors:HE Yucai  ZHOU Qiong  ZHANG Yue  WANG Longyao  WANG Liqun  GAO Dazhou  ZHENG Ming  ZHAO Xiyue  LU Bin  DING Liang
Affiliation:Laboratory of Biochemical Engineering,College of Pharmaceutical and Life Sciences,Changzhou University,Changzhou 213164,Jiangsu,China
Abstract:Rhodococcus sp. CCZU10-1 has been isolated from soil samples with high nitrilase activity against 3-cyanopyridine using the enrichment culture technique. The preferred carbon sources,nitrogen sources,and inducer were glucose(10 g/L),a composite of peptone(10 g/L)and yeast extract(5 g/L),and ε-caprolactam(2.0 mmol/L),respectively. The optimal reaction temperature and pH for 3-cyanopyridine-hydrolyzing activity were 30 ℃ and pH 7.0,respectively. Using fed-batch method,a total of 927 mmol/L nicotinic acid has been accumulated in the reaction mixture after the 10th feed.
Keywords:3-cyanopyridine  nicotinic acid  Rhodococcus sp  CCZU10-1  screening  catalytic characteristics  
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