食品科学 ›› 2008, Vol. 29 ›› Issue (5): 298-302.

• 生物工程 • 上一篇    下一篇

酶解胶原蛋白制备血管紧张素转化酶抑制肽的研究

 孔青, 李晶, 毕涛, 管斌, 陈峰   

  1. 中国海洋大学食品科学与工程学院; 克莱姆森大学食品科学与营养系;
  • 出版日期:2008-05-15 发布日期:2011-08-26

Preparation of Angiotensin-converting Enzyme Inhibitory Peptides Derived from Enzymatic Hydrolysates of Collagen

 KONG  Qing, LI  Jing, BI  Tao, GUAN  Bin, CHEN  Feng   

  1. 1.School of Food Science and Engineering,Ocean University of China;2.Department of Food Science and Human Nutrition,Clemson University
  • Online:2008-05-15 Published:2011-08-26

摘要: 血管紧张素转化酶(angiotensin-converting enzyme,ACE)抑制剂是目前用于治疗高血压的重要药物。本实验采用胃蛋白酶(pepsin)和胰蛋白酶(trypsin)组合酶解胶原蛋白制备水解液。使用1kD超滤膜对水解液进行超滤,超滤液采用葡聚糖凝胶Sephadex G-15凝胶过滤层析得到多种组分。各组分经酶活力和蛋白浓度测定,筛选出有较高ACE抑制率的两个样品。继续使用反相高效液相色谱进一步分离筛选出样品,对分离出的不同组分进行蛋白浓度和抑制率测定,通过分析实验数据,筛选出具有最高活性组分。最终样品经脱盐和冷冻干燥后进行高抑制活性的血管紧张素转化酶抑制肽的分子量的测定。

关键词: 血管紧张素转化酶, 抑制肽, 凝胶过滤层析, 反相高效液相色谱, 高血压

Abstract: Angiotensin-converting enzyme(ACE) inhibitors are very important drugs for clinical treatment of hypertension.Pepsin and trypsin were used together to prepare the hydrolysates from collagen.Ultrafiltrations(UF) with 1 kD membrane and gel filtration chromatography(GFC) with Sephadex G-15 were used to separate the hydrolysates into different components.By measuring the inhibitory activity and protein concentration of the components,two samples with the greatest inhibitory activity were selected.The samples were then taken to further separate by reverse phase high performance liquid chromatography(RP-HPLC).Different components of the samples were collected.The same methods as that mentioned above were taken to screen the optimum component.After desalting and freezing drying,the molecular mass of component with the greatest inhibitory activity was determined at last.

Key words: angiotensin-converting enzyme, inhibitory peptides, gel filtration chromatography, reverse phase high performance liquid chromatography, hypertension