摘要
系统地研究了碱性蛋白酶2709在AOT/异辛烷反胶束体系中的催化行为。研究底物浓度、反胶束浓度、水含量、pH值、温度、盐的浓度及种类对酶活力的影响。结果表明:酶在反胶束体系中表现出超活性,且作用于胶束膜。在AOT/异辛烷浓度为0.08g/ml时,影响酶活力大小主次因素为:盐浓度>W0>pH值>温度。最佳酶活力条件:45℃,0.2mol/LKCl液,pH值9.2,W值19.3。此时酶活力为9.27×105U/g。
The enzyme activity of alkalase 2709 incorporated in AOT/iso-octane reverse micelles has been investigated. Effects of substrate concentration, rev erse micelles concentration, W0, pH, temperature, salt concentration and of vari ous kinds were studied in detail. The enzyme showed 'super activity' and acted i n the membrane of reverse micelles. When the concentration of AOT/iso-octane wa s 0.08g/ml, factors affecting the activity of the enzyme were as follows: sal t concentration > W0 >pH value >temperature with optimal activity at 9.27×105U ,4 5℃,0.2mol/L KCl, pH 9.2 andW0 value 19.3.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2003年第4期19-22,共4页
Food Science
基金
河南省科技攻关项目(971070103)
