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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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Xanthine-Oxidase-Inhibitor

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List of activity chemicals.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Chemical Name Dosage Reference
FOLIC-ACID Pizzorno, J.E. and Murray, M.T. 1985. A Textbook of Natural Medicine. John Bastyr College Publications, Seattle, Washington (Looseleaf).
FRAXETIN IC100=10 uM *
GALLIC-ACID IC50=24 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
GEMIN-D IC50=35 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
GERANIIN IC50=>40 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
GLISOFLAVONE IC50=>100 uM *
GLYCYCOUMARIN IC50=>100 uM *
GLYCYRRHISOFLAVANONE IC50=>100 uM *
GLYCYRRHISOFLAVONE IC50=53 uM *
HYPERIN-2''-GALLATE 73 uM *
HYPEROSIDE *
ISOQUERCETRIN-2''-GALLATE 50 uM *
ISOTERCHEBIN IC50=14 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
LICOARYLCOUMARIN IC50=>100 uM *
LICOCHALCONE-A IC50=56 uM *
LICOCHALCONE-B IC50=30 uM *
LICOCOUMARONE IC50=13 uM *
LICOPYRANOCOUMARIN IC50=>100 uM *
LUTEOLIN IC50=0.11 ug/ml Chem. & Pharm. Bull. 38: 1772.
METHYL-GALLATE IC50=29 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
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List of Activity Plants.
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Plant Name Common Name Chemical Count Total Parts Per Million
Vaccinium vitis-idaea Cowberry; Lingen; Lingonberry 8 610, 500
Valeriana officinalis Valerian; Common Valerian; Garden-Heliotrope 3 17, 400
Vanilla planifolia Vanilla; Bourbon Vanilla 3 0
Verbena officinalis Vervain 2 10, 000
Veronica officinalis Common Speedwell; Gypsyweed 1 0
Viburnum opulus Crampbark; European Cranberry Bush; Guelder Rose; Snowballbush 6 120, 000
Viburnum prunifolium Black Haw 4 20, 000
Vicia faba Broadbean; Faba Bean; Habas 3 0
Vigna mungo Black Gram 1 1.2999999523162842
Vigna radiata Green Gram; Mungbean 3 32.010000467300415
Vigna unguiculata Cowpea; Black-eyed Pea; Crowder Pea; Southern Pea 2 130.69999599456787
Vinca minor Periwinkle; Running-Myrtle 1 0
Viola odorata Common Violet; Sweet Violet 1 0
Viola tricolor Pansy; Wild Violet 2 0
Viscum album European Mistletoe 1 0
Vitex agnus-castus Chaste-Tree 1 0
Vitis vinifera Grape; European Grape; Wine Grape; Grapevine; Vigne Vinifere (Fr.); Weinrebe (Ger.); Parra (Sp.); Vid (Sp.) 15 5, 505.840000033379
Warburgia ugandensis Warburghia 1 0
Withania somnifera Ashwagandha 1 0
Yucca baccata Spanish Bayonet; Yucca; Banana Yucca; Blue Yucca 1 0