Effects of rice protein hydrolysates prepared by microbial proteases and ultrafiltration on free radicals and meat lipid oxidation

► Alkaline microbial protease is more efficient than the neutral enzymes in hydrolysing rice protein. ► Rice hydrolysates with smaller molecular weight exerts stronger antioxidant activities. ► Rice hydrolysates significantly inhibit meat lipid oxidation during the 15-day storage.