Chemical QUERCETIN | Dr. Duke's Phytochemical and Ethnobotanical Databases

Chemical ID

QUERCETIN

Ubiquitous

List of known dosages
Dosage	Reference
LD50=160 (orl mus)
LD50=>2,000 (orl rat)	Pizzorno, J.E. and Murray, M.T. 1985. A Textbook of Natural Medicine. John Bastyr College Publications, Seattle, Washington (Looseleaf).

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List of chemical activities.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Activity	Dosage	Reference
11B-HSD-Inhibitor	not available	Duke, 1992 *
5-Lipoxygenase-Inhibitor	IC50 (uM)=4	Duke, 1992 *
Aldehyde-Oxidase-Inhibitor	IC70-96=10 uM	Duke, 1992 *
Aldose-Reductase-Inhibitor	100 uM	Duke, 1992 *
Aldose-Reductase-Inhibitor	4 ug/ml	Ichikawa, K., et al. 1991. Isolation and Structure Determination of Aldose Reductase Inhibitors from Traditional Thai Medicine, and Syntheses of Their Derivatives. Sankyo Kenkyusho Nempo, 43: 99-110.
Aldose-Reductase-Inhibitor	IC50=0.84 ug/ml cow	Okada,Y,et al.1995.Search for Naturally Occurring Substances to Prevent the Complications of Diabetes.II.Inhibitory Effect of Coumarin and Flavonoid Derivatives on Bovine Lens Aldose Reductase and Rabbit Platelet Aggregation.Chem Pharm Bull43(8):1385-1387
Aldose-Reductase-Inhibitor	IC50=0.344 uM	Mao, X. M., Zhang, J. Q. 1993. Inhibition of Aldose Reductase by Extracts of Chinese Herbal Medicine. Zhongguo Zhongyao Zazhi , 18(10): 623-624.
Allelochemic	IC82=1 mM	Lydon, J. & Duke, S., The potential of pesticides from plants, pp. 1-41 in Craker, L. & Simon, J., eds, Herbs, Spices & Medicinal Plants: Recent Advances in Botany, Horticulture, & Pharmacology, v. 4, Oryx Press, Phoenix, 1989, 267pp.
Allergenic	not available	Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Analgesic	not available	Duke, 1992 *
Antiaflatoxin	IC50=7.5 ppm	Duke, 1992 *
Antiaflatoxin	IC50=25 uM	Duke, 1992 *
Antiaggregant	IC50=55 uM	Economic & Medicinal Plant Research, 5: 333.
Antiaggregant	30 uM	Duke, 1992 *
Antiaging	not available	Duke, 1992 *
Antiallergic	IC50=14 uM	Jim Duke's personal files.
Antialzheimeran	not available	Duke, 1992 *
Antianaphylactic	not available	Meli, R., Autore, G., Di Carlo, G., Capasso, F. Inhibitory Action of Quercetin on Intestinal Transit in Mice. Phytotherapy Research 4(5): 201, 1990.
Antiangiogenic	not available	Duke, 1992 *
Antiarthritic	not available	Duke, 1992 *

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List of chemical plants.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Plant Name	Plant Part	Low Parts Per Million	High Parts Per Million	Standard Deviation	Reference
Abelmoschus esculentus	Flower	not available	not available	not available	ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Abelmoschus moschatus	Flower	not available	not available	not available	Rizk, A.F.M. and Al-Nowaihi, A.S., The Phytochemistry of the Horticultural Plants of Qatar, Scientific and Applied Research Centre, University of Qatar.
Abutilon theophrasti	Root	not available	not available	not available	Paszkowski, W. L., Kremer, R. J. 1988. Biological Activity and Tentative Identification of Flavonoid Components in Velvetleaf (Abutilon theophrasti Medik.) Seed Coats. J. Chem. Ecol., 14(7): 1573-1582.
Abutilon theophrasti	Flower	not available	not available	not available	Matlawska, I. 1990. Investigation of Flavonoid Compounds of Selected Species from Malvaceae Family. Herba Pol., 36(3): 65-69.
Abutilon theophrasti	Leaf	not available	not available	not available	Matlawska, I. 1990. Investigation of Flavonoid Compounds of Selected Species from Malvaceae Family. Herba Pol., 36(3): 65-69.
Acacia catechu	Plant	not available	not available	not available	Duke, 1992 *
Acacia nilotica	Plant	not available	not available	not available	Duke, 1992 *
Acacia senegal	Plant	not available	not available	not available	Duke, 1992 *
Achillea millefolium	Plant	not available	not available	not available	Tunon, H., Thorsell, W., and Bohlin, L. 1993. Mosquito Repelling Activity of Compounds Occurring in Achillea millefolium L. (Asteraceae). Economic Botany 48(2): 111-120, 1994.
Acinos suaveolens	Shoot	not available	430.0	1.4	Jim Duke's personal files.
Actinidia chinensis	Plant	not available	not available	not available	Duke, 1992 *
Aesculus hippocastanum	Bark	not available	not available	not available	List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979.
Aesculus hippocastanum	Seed	not available	not available	not available	Jim Duke's personal files.
Agathosma betulina	Plant	not available	not available	not available	Williamson, E. M. and Evans, F. J., Potter's New Cyclopaedia of Botanical Drugs and Preparations, Revised Ed., Saffron Walden, the C. W. Daniel Co., Ltd., Essex UK, 362 pp, 1988, reprint 1989.
Ageratum conyzoides	Plant	not available	not available	not available	J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991.
Agrimonia eupatoria	Plant	not available	not available	not available	Newall, C. A., Anderson, L. A. and Phillipson, J. D. 1996. Herbal Medicine - A Guide for Health-care Professionals. The Pharmaceutical Press, London. 296pp.
Agrimonia eupatoria	Shoot	not available	not available	not available	Duke, 1992 *
Ailanthus altissima	Leaf	not available	not available	not available	Duke, 1992 *
Albizia lebbeck	Leaf	not available	not available	not available	Wealth of India.
Allium cepa	Bulb	0.0	48100.0	1.0	Duke, 1992 *