食品科学 ›› 2008, Vol. 29 ›› Issue (11): 369-374.

• 生物工程 • 上一篇    下一篇

酶法生产大豆蛋白ACE抑制肽的研究

 韩飞, 于婷婷, 周孟良   

  1. 国家粮食局科学研究院; 扬州大学;
  • 出版日期:2008-11-15 发布日期:2011-12-08

Enzymatic Preparation of Angiotensin I-Converting Enzyme(ACE) Inhibitory Peptides Derived from Soybean Protein

 HAN  Fei, YU  Ting-Ting, ZHOU  Meng-Liang   

  1. 1.Academy of State Administration of Grain,Beijing 100037,China;2.Yangzhou University,Yangzhou 225009,China
  • Online:2008-11-15 Published:2011-12-08

摘要: 研究了Alcalase碱性蛋白酶、Neutrase中性蛋白酶、Protames复合蛋白酶、Flavourzyme风味蛋白酶对大豆分离蛋白的水解效果和ACE(血管紧张素转化酶)的抑制活性。水解能力用pH-start法检测,水解度大小依次为:Alcalase碱性蛋白酶>Protames复合蛋白酶>Neutrase中性蛋白酶>Flavourzyme风味蛋白酶;ACE抑制活性用高效液相法检测,ACE抑制率强弱依次为:Alcalase碱性蛋白酶>Flavourzyme风味蛋白酶>Protames复合蛋白酶>Neutrase中性蛋白酶。综合考虑,选定Alcalase碱性蛋白酶为生产大豆ACE抑制肽的最适酶,并对其酶解条件进行了优化,确定生产大豆ACE抑制肽的最佳条件为:温度60℃、pH8.0、[S]=4%、[E]/[S]=4%,这时的水解度为14.4%。

关键词: ACE抑制肽, 高效液相色谱, 酶解, 水解度

Abstract: Four type of enzymes,Alcalase,Neutrase,Protames,Flavourzyme,were used to hydrolyze the prepared soybean protein isolates in our laboratory and the degrees of hydrolysis(DH) were analyzed by using pH-start method,respectively.The ACE(angiotensin I-converting enzyme) inhibitory activities of the products were studied by HPLC.The results showed that hydrolysis abilities of these enzyme are in the following order:Alcalase > Protames > Neutrase > Flavourzyme;The ACE inhibitory activity of the product by Alcalase is the highest.The optimal conditions for producing ACE inhibitory peptides by using Alcalase are temperature 60 ℃,pH 8.0,[S]=4%,and [E]/[S]=4%.The degree of hydrolysis(DH) is 14.4% under the above conditions.

Key words: angiotensin I-converting enzyme inhibition, high performance liquid chromatograpy(HPLC), enzymatic hydrolysis, degree of hydrolysis