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对酪蛋白非磷肽的溶解性、相对黏度、相对分子质量分布和氨基酸组成进行分析,并验证其具有较强的ACE抑制活性。经体外消化实验发现,CNPPs在消化道酶作用后,ACE抑制活性从52.05%提高到57.49%;肽谱分析显示出CNPPs中肽的种类和组成非常复杂。
The solubility, relative viscosity, relative molecular mass distribution and amino acid composition of casein non-phosphopeptide were analyzed and its ACE inhibitory activity was verified. In vitro digestion experiments showed that the ACE inhibitory activity of CNPPs increased from 52.05% to 57.49% after digestive tract enzyme activity. Peptide profiling showed that the type and composition of peptides in CNPPs were very complex.