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菜籽蛋白酶解液制备N-酰化肽的研究(Ⅱ)——蛋白水解率对N-酰化肽性能的影响
王志军1,姜延程2
1. 无锡轻工大学食品学院,;2. 郑州粮食学院生物工程系,
摘要:
用不同水解率的水解液合成了N-酰化肽,对比了它们的表面活 性,由碱性蛋白酶水解菜籽蛋白,当水解率为30.6%时,所合成的N-酰化肽性能比水解率为 15.7%、20.3%时要好,用Sephadex G-15分析了水解液中肽分子量的分布情况,发现较佳水 解率的水解液中80%的肽分子量小于1500Da。
关键词:  菜籽蛋白  酶水解物  酰化  
DOI:
分类号:Q556.9
基金项目:河南省科技攻关项目
Preparation of N-acyl Peptide from Protease Hydrolysate of Rape Cake(Ⅱ)——Effects of the hydralysis Efficiency
Abstract:
In this preliminary study, different hydrolysates of rape cake were compared for their usefulness in preparation of N-acyl peptide. I t was found that rape cake protein hydrolysate prepared with alkaline protease w as the best starting material for synthesis of N-acyl peptide when the hydrolysi s efficiency was 30.6% and if the content of peptides with a molecular weight le ss than 1,5 kD in the lysate was 80%.
Key words:  Rape cake hydrolysate, acylation, peptide