Phytotherapy Research 1999-Aug
Tyrosinase inhibitory p-coumaric acid from ginseng leaves.
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概要
By bioassay-guided fractionation using mushroom tyrosinase, p-coumaric acid was characterized as the principal tyrosinase inhibitor from the fresh leaves of Panax ginseng (Araliaceae). It inhibited the oxidation of L-tyrosine more strongly than that of L-3, 4-dihydroxyphenylalanine (L-DOPA) by this enzyme. On the basis of this finding, various related phenylpropanoid analogues were also tested in order to gain new insights into their structural criteria.
