食品科学 ›› 2006, Vol. 27 ›› Issue (1): 203-206.

• 营养卫生 • 上一篇    下一篇

鲢肉酶解工艺及其产物对大鼠ACE抑制活性的研究

黄艳春, 熊善柏, 赵思明, 刘张虎   

  1. 华中农业大学食品科技学院
  • 出版日期:2006-01-15 发布日期:2011-09-05

Enzyme Hydrolysis and Inhibition of Hydrolysates from Silver Carp Hypophthalmichthys molitrix Meat on AngiotensinⅠ- Converting Enzyme (ACE)

 Huang-Yan-Chun, XIONG  Shan-Bai, ZHAO  Si-Ming, LIU  Zhang-Hu   

  1. College of Food Science and Technology, Huazhong Agricultural University
  • Online:2006-01-15 Published:2011-09-05

摘要: 研究了四种蛋白酶水解白鲢鱼肉的工艺条件,并采用离体培养的方法研究其水解产物对大鼠血管紧张素转化酶(AntiotensinI-ConcertingEnzyme,ACE)的抑制活性。研究结果表明1398中性蛋白酶、复合风味酶、碱性蛋白酶和复合蛋白酶的最适水解温度分别为40、55、55和50℃,最适起始pH分别为7.5、7.0、7.5和6.5。复合风味酶的水解产物具有较高的ACE抑制活性,其12h的水解产物水解度为28.05%,ACE活性抑制率为64.75%。在优化酶解条件下,采用复合风味酶水解白鲢不同部位的蛋白质,蛋白质提取率可达90%,水解度22%~40%,在酶解液浓度相同时(1mg/ml),白肉酶解产物对ACE的抑制率最高。

关键词: 白鲢, 蛋白酶, 水解度, 蛋白质提取率, 血管紧张素转化酶抑制肽

Abstract: In this paper, four trade-proteases were chosen to hydrolyze silver carp (Hypophthalmichthys molitrix) muscle protein to obtain hydrolysates with powerful inhibitory activity on Angiotensin Ⅰ-Converting Enzyme (ACE) in Spontaneously Hypertensive Rats (SHR) serum. The results showed that the optimum conditions for As.1398 Neutrase, Flavorzyme, Alcalase and Protamex were: temperature 40℃, 55℃, 55℃, 50℃, and pH7.5, 7.0, 7.5, 6.5 respectively. In vitro experimental results indicated that the hydrolysates of 12h obtained by Flavorzyme had higher degree of hydrolysis (28.05%) and higher ACE inhibitory activity (64.75%). Different parts of silver carp were hydrolyzed by Flavorzyme at the optimum conditions derived from orthogonal experiment. They all showed good hydrolytic effect with DH (22%~40%) and rate of protein recovery (RE) about 90%. The hydrolysates of white muscle have the highest ACE inhibitory activity than other parts at the same concentration (1mg/ml).

Key words: silver carp, proteases, degree of hydrolysis, rate of recovery, ACE inhibitory peptides