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魚介類由来の生理活性ペプチドに関する研究(5) ワカメジペプチド誘導体の抗酸化活性について Studies on biologically active peptide derived from fish and shellfish - 5 Antioxidant activities of Undaria pinnatifida depeptide derivatives Suetsuna, Kunio 2910 末綱, 邦男 スエツナ, クニオ Chen, Jiun-Rong 陳, 俊栄 The antioxidant activity of Undaria pinnatifida dipeptides was firstly evaluated by the ferric thiocyanate method. Among the synthetic dipeptides containg Lys, three dipeptides had strong activity and their antioxidant activity evaluated by the induction period was 32.1 days for Lys-His, 26.1 days for Lys-Met and 25.0 days for Met-Lys. Furthermore, the IC50 value for superoxide anion-scavenging activity by XOD-XTT method was 2.52 mM for Lys-His, 10.5 mM for Lys-Met and 11.9 mM for Met-Lys. The IC50 value for hydroxyl radical-scavenging activity by the ESR method was 1.02 mM for Lys-His, 2.66 mM for Lys-Met and 2.86 mM for Met-Lys. departmental bulletin paper 水産大学校 National Fisheries University 2002-10-17 application/pdf 水産大学校研究報告 1 51 1 5 Journal of National Fisheries University AN00124678 0370-9361 https://fra.repo.nii.ac.jp/record/2011747/files/fishu_k_51_1.pdf https://fra.repo.nii.ac.jp/records/2011747 eng fishu_k_51_1 agriknowledge https://agriknowledge.affrc.go.jp/RN/2010673184 open access