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Position: Home > Articles > Optimization of Enzymatic Hydrolysis Conditions for Production of ACE Inhibitory Peptides from Whey Protein Using Immobilized Proteinase of Lactobacillus helveticus FOOD SCIENCE 2015,36 (7) 61-65

固定化瑞士乳杆菌蛋白酶酶解乳清蛋白生产ACE抑制肽的条件优化

作  者:
周慧敏;刘琛;郭宇星;潘道东;曾小群;孙杨赢
单  位:
宁波大学海洋学院;南京师范大学金陵女子学院
关键词:
ACE抑制肽;固定化瑞士乳杆菌蛋白酶;乳清蛋白;响应面法
摘  要:
以乳清浓缩蛋白WPC-80为原料,研究固定化瑞士乳杆菌蛋白酶酶解WPC-80生产血管紧张素转化酶(angiotensinⅠ-converting enzyme,ACE)抑制肽的工艺条件。通过单因素试验和响应面方法研究了酶解温度、酶解p H值、底物与酶质量比([S]/[E])、酶解时间对固定化瑞士乳杆菌蛋白酶制备ACE抑制肽的影响,确定了酶解乳清蛋白制备ACE抑制肽的最佳工艺条件为:温度37℃、p H 7.5、[S]/[E]=15%、酶解时间8 h。在此条件下,酶解产物的水解度为(6.05±0.36)%,ACE抑制率为(59.54±0.61)%。
译  名:
Optimization of Enzymatic Hydrolysis Conditions for Production of ACE Inhibitory Peptides from Whey Protein Using Immobilized Proteinase of Lactobacillus helveticus
作  者:
ZHOU Huimin;LIU Chen;GUO Yuxing;PAN Daodong;ZENG Xiaoqun;SUN Yangying;Ginling College, Nanjing Normal University;School of Marine Sciences, Ningbo University;
关键词:
ACE inhibitory peptides;;immobilized proteinase of Lactobacillus helveticus;;whey protein;;response surface methodology
摘  要:
Angiotensin Ⅰ-converting enzyme(ACE) inhibitory peptides from WPC(whey protein concentrate)-80 were prepared by the immobilized proteinase produced by Lactobacillus helveticus. The effects of enzymatic hydrolysis conditions including temperature, p H, substrate to enzyme([S]/[E]) ratio and hydrolysis time on degree of hydrolysis and ACE inhibitory activity were investigated using single factor method and response surface methodology. The optimum temperature, p H, [S]/[E] ratio and hydrolysis time were found to be 37 ℃, 7.5, 15% and 8 h, respectively. Under these conditions, the degree of hydrolysis was(6.05 ± 0.36)%, and the ACE inhibitory activity of the hydrolysate was(59.54 ± 0.61)%.

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