Modifications in Protein Structure and Xanthine Oxidase Inhibition of Yak Casein Induced by Protease Treatment.

Yak milk is abundant in casein, which can generate a variety of bioactive peptides through enzymatic hydrolysis. However, the influence of enzymatic hydrolysis on the structural properties of yak casein and its inhibitory effects on xanthine oxidase (XOD) remain largely unexplored. This study demonstrated that when yak casein was subjected to treatment with flavourzyme, the degree of hydrolysis progressively increased over time, resulting in the fragmentation of the casein's flake-like structure into smaller particles.