酶法制取鱼皮胶原蛋白短肽

采用高效、环保的水解方法提取了鳕鱼皮中的胶原蛋白,并应用木瓜蛋白酶制取鱼皮胶原蛋白短肽,根据胶原蛋白的提取率确定了提取的最适反应条件,通过纸层析和SDS-PAGE电泳技术分析了鱼皮胶原蛋白的水解情况。结果表明,酶与原料比为1∶300、酶反应时间10 h、反应温度55℃、pH值为6.8,胶原蛋白的提取率最高;鱼皮胶原蛋白的水解产物主要以6~29 ku的小分子质量的短肽形式存在。以废弃鳕鱼皮作实验材料,可减少环境污染,节约资源,提高水产品废弃物的附加值。

Enzymatic hydrolysis of cod collagen for peptide production

The wasted cod skin was hydrolyzed by papain to produce soluble peptide in this paper.The results show that the optimal condition for hydrolysis was as follows: the ratio of peptide and cod skin was 1∶300,reaction time was 10 h,temperature was 55 ℃,pH was 6.8.SDS-PAGE showed that the molecular weight of hydrolyte ranges from 6 to 29 ku.