耐冷菌Bacillus cereus SYP-A3-2低温蛋白酶的发酵条件  

The Fermentation Conditions of Cold-adapted Protease by the Psychrotrophic Strain Bacillus cereus SYP-A3-2

作　　者：吴奇凡[1] 史劲松[1] 许正宏[1,2] 陶文沂[1,2] 

机构地区：[1]江南大学生物工程学院 [2]江南大学教育部工业生物技术重点实验室无锡214036

出　　处：《微生物学通报》2005年第5期46-50,共5页Microbiology China

基　　金：国家高技术研究发展计划项目("863"项目)(No.2001AA214101)~~

摘　　要：研究了营养因子及环境条件对中国冰川1号耐冷菌BacilluscereusSYP-A3-2产低温蛋白酶的影响。结果表明对该菌产酶影响较大的因素分别是温度、酪蛋白浓度和pH,在酪蛋白浓度0·8%、pH7、15℃下摇瓶发酵48h产酶水平可达3,800U/mL。Effects of nutrition factors and environments conditions on the producing cold-adapted protease of Bacillus cereus SYP-A3-2, a Psychrotrophic strain derived from the NO. 1 Glacier Mountain China, were investigated. Results indicated that the producing protease capability of the strain is greatly influenced by temperature, casein component and pH factors. The enzymatic activity 3, 800 U/mL was also obtained at optimum fermentation conditions after 48 hr.

关 键 词：耐冷菌 BACILLUS CEREUS 低温蛋白酶 发酵条件 

分 类 号：TQ920.1[轻工技术与工程—发酵工程]