Antioxidative activity of recombinant MT-I and MT-II tryptic hydrolyzates. The plot shows the antioxidative activity (%) of MT-I and MT-II hydrolyzates at different trypsin hydrolysis time (0 hr and 24 hr). The proteins and the scavenging activity of DPPH radicals (%) were shown. The scavenging effect (%) was calculated according to the equation [1 - (Abs 517 nm of sample ÷ Abs 517 nm of control)] × 100%. Antioxidative activity of recombinant MT-I (A) and MT-II (B) tryptic hydrolyzates.