Among these small peptides, those containing Lys residues at the N-termini (Lys-Phe, Lys-Leu, Lys- Tyr, and Lys-Asn-Tyr-Pro) and Tyr residues in their sequences (Arg-Tyr, Tyr-Asp, and Tyr-Tyr) showed strong antioxidative activity against the peroxidation of linoleic acid (Table 1).