Corn gluten meal was hydrolyzed by alkaline protease and Flavourzyme to obtain the antioxidant peptides. The antioxidant activities of the hydrolysates or peptides were evaluated free radical scavenging capacity (1,1-diphenyl-2-picrylhydrazyl/2,2-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (diammonium salt/hydroxyl radical/superoxide radical anion), metal ion (Fe2+/Cu2+) chelating activity and lipid peroxidation inhibitory capacity.The hydrolysates were separated by ultrafiltration, and those with molecular weight