Gelatin hydrolysate from blacktip shark skin prepared using papaya latex enzyme: Antioxidant activity and its potential in model systems

► Gelatin hydrolysate from shark skin showed high DH (40%) when prepared using papaya latex enzyme. ► DH directly affected antioxidant activity of gelatin hydrolysate, both by chain breaking and preventive mechanisms. ► Gelatin hydrolysate retarded lipid oxidation in model systems.