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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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Antioxidant

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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
PROTOCATECHUIC-ACID 1/2 BHT *
PROTOCATECHUIC-ACID 10 x alpha-tocopherol *
PROTOCATECHUIC-ACID 2/3 quercetin *
PROTOPAPAVERINE IC50=61 uM *
PRUNUSOL *
PTEROSTILBENE *
PUERARIN *
PUNICACORTEIN *
PUNICALAGIN IC50=2.3 uM *
PURPUROGALLIN Merck 11th Edition
PYCNOGENOL *
PYROCATECHOL Jim Duke's personal files.
PYROGALLOL Jim Duke's personal files.
QUERCETAGENIN-7-O-GLUCOSIDE *
QUERCETAGETIN Nigg, H.N. and Seigler, D.S., eds. 1992. Phytochemical Resources for Medicine and Agriculture. Plenum Press, New York. 445 pp.
QUERCETIN IC96=300 ppm Phenolic Compounds in Food and Their Effects on Health. Antioxidants & Cancer Prevention. Huang, M.T., Ho, C.T. and Lee, C.Y. eds. 1992. ACS Symposium Series 507.ACS, Washington 402 pp.
QUERCETIN 4.7 x Vit. E *
QUERCETIN IC47=10 uM *
QUERCETIN ED50=2.3 uM Seidel, V., Verholle, M., Malard, Y., Tillequin, F., Fruchart, J-C., Duriez, P., Bailleul, F., Teissier, E. 2000. Phenylpropanoids from Ballota nigra L. Inhibit in vitro LDL Peroxidation. Phytotherapy Research, 14(2): 93-98.
QUERCETIN-3,4'-DIGLUCOSIDE *
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List of Activity Plants.
Click on column headings to sort table by that column.
Plant Name Common Name Chemical Count Total Parts Per Million
Viscum album European Mistletoe 13 7, 659
Vitellaria paradoxa Butterseed; Shea Nut; Shea-Butter-Tree; Sheatree; Shea 6 393, 950
Vitex agnus-castus Chaste-Tree 15 60, 368
Vitis vinifera Grape; European Grape; Wine Grape; Grapevine; Vigne Vinifere (Fr.); Weinrebe (Ger.); Parra (Sp.); Vid (Sp.) 75 1, 749, 074.4960072488
Warburgia ugandensis Warburghia 2 30, 000
Withania somnifera Ashwagandha 10 1, 200
Xanthorhiza simplicissima Yellowroot 1 0
Xanthosoma sagittifolium Malanga; Tannia; Yautia 3 1, 019.4000005722046
Xylopia aethiopica Ethiopian Pepper; Guinea Pepper; Negro Pepper; Spice Tree; Mohrenpfeffer (Ger.); Maniguete (Sp.); Pimienta de Guinea (Sp.) 2 63, 700
Yucca baccata Spanish Bayonet; Yucca; Banana Yucca; Blue Yucca 6 584.7999992370605
Zanthoxylum alatum Indian Prickly Ash; Wartara Oil Tree 2 90
Zanthoxylum americanum Northern Prickly Ash 2 0
Zanthoxylum clava-herculis Pepperbark; Southern Prickly Ash; Hercules'-Club; West Indian Yellowwood 2 0
Zea mays Corn 52 314, 039.4009997378
Zingiber officinale Ginger 47 363, 730.90099914174
Zizyphus jujuba Da-Zao; Jujube; Ta-Tsao 10 1, 648, 783.200000286
Zizyphus spina-christi Syrian Christ-Thorn 4 331.39999997615814