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Xanthine oxidase (XO) catalyzes the metabolism of hypoxanthine and xanthine to uric acid, the overproduction and/or underexcretion of which could cause the incidence of hyperuricemia such as gout. Herein, the inhibition of XO is recognized as one of the therapeutic approaches to treat gout. In the present study, an off‐line fluorescence‐based microplate method was first developed for an XO assay in...
In this study, an online HPLC-DAD-MS coupled with 2,2′-azinobis (3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt (ABTS) assay was employed for evaluating free radical scavenging activity of Eagle tea and their active components. Twenty-three chromatographic peaks were detected, and nineteen components had free radical scavenging activity. Among them, eight compounds were identified as flavonoids...
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