Described herein are antioxidant peptides and methods of producing the same. The antioxidant peptides are produced from cereal grain protein sources, which provide a number of advantages over more expensive antioxidant sources and synthetically-produced antioxidants. The antioxidant peptides are produced by reacting the cereal grain material with an enzyme capable of hydrolyzing proteins within the material, thereby forming hydrolysate peptides. The hydrolysate peptides are then selectively recovered to form an antioxidant peptide product. The antioxidant peptide product is useful in a number of applications, particularly as an ingredient in a food product to provide antioxidant properties to the food product.
