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Hydroxyl radical (·OH) scavenging capacity. The ratio of the radical quantity generated when YKS or ascorbic acid was added ([DMPO-OH]t) to the radical quantity generated without YKS or ascorbic ([DMPO-OH]0). (a) Both showed higher ·OH scavenging capacity in a dose-dependent manner, with ascorbic acid higher. (b) YKS exhibited higher ·OH scavenging capacity when adjusted for the daily dose and compared. YKS, Yokukansan; DMPO, 5,5-dimethyl-1-pyrroline-N-oxide.
