Contribution of amino acid composition and secondary structure to the antioxidant properties of tilapia skin peptides

Tilapia skin is a byproduct of tilapia processing and can be used as a potential resource to produce antioxidant peptides. In this study, the process conditions for the extraction of antioxidant peptides were optimized by response surface methodology, followed by amino acid and structural characterization of different antioxidant active fractions, and finally, the oxidative free radical scavenging mechanism was predicted. The enzymolysis process conditions are: enzyme dosage: 2.51