As a result,those hydrolysates had a higher efficacy in inhibiting theoxidation of LDL-cholesterol.Hydrolysates with higher DH might contain peptides with amino acid sequence or compositions rendering high antioxidant activities. The presence of certain amino acids ,such as histidine,tryptophan,tyrosine,phenylalanine,methionine,leucine, glycine or proline was reported to enhance the scavenging and chelating activities of peptides.