食品科学 ›› 2001, Vol. 22 ›› Issue (7): 25-28.

• 基础研究 • 上一篇    下一篇

酪蛋白酶解制备酪蛋白磷酸肽研究 Ⅰ.过程分析与优化

 齐崴,  何志敏,  何丽霞   

  1. 天津大学化学工程研究所酶工程研究室
  • 出版日期:2001-07-15 发布日期:2012-02-13

Enzymatic Hydrolysis of Casein to Phospopetides Ⅰ .Process Analysis and Optimization

 QI  Wei,   He-Zhi-Min,   He-Li-Xia   

  • Online:2001-07-15 Published:2012-02-13

摘要: 以 pH- stat技术跟踪间歇搅拌反应釜中酪蛋白—碱性蛋白酶抑制备酪蛋白磷酸肽 (CPPS)过程特性,利用水解度 (DH)表征其反应历程。分析了温度 (T)、 pH值、底物浓度 ([S])、酶浓度 ([E])及时间 (t)等参数对 DH的影响,并通过多元线性回归求得其关联式,确定出最适酶解条件为: T=40℃, pH=10, [E]=0.2%, [S]=2.5g/L, t=30min。

关键词: 酪蛋白, 碱性蛋白酶, 酪蛋白磷酸肽, 水解度, 操作参数

Abstract: Casein was hydrolyzed with alcalase to prepare phospopeptides(CPPs)in a batch stirred tank reactor(BSTR).The effecfs of operating parameters- temperature,pH,enzyme concentration,substrate concentration and time- on the degree of hydrolysis were studied by the pH- stat technique.The optimal operating conditions(40℃, pH10,0.2% enzyme,2.5g/L casein and 30min) were obtained.A correlation was also established in terms of the multiple linear regression.

Key words: Casein alcalase phospopeptides degree of hydrolysis operating parameters