An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Plant Allium cepa (Liliaceae)

Common Names
Onion; Shallot
How this plant is used
Food
View the list of ubiquitous chemicals
List of plant chemicals.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Chemical Name Activity Count Plant Part Low Parts Per Million High Parts Per Million Standard Deviation Reference
ASCORBIC-ACID 112 Leaf 390.0 5000.0 0.02 Duke, 1992 *
ASH 0 Bulb 4000.0 63000.0 -1.00 Duke, 1992 *
ASH 0 Leaf 7000.0 90000.0 -0.51 CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses
ASPARAGINE 2 Bulb not available not available not available Duke, 1992 *
ASPARTIC-ACID 3 Bulb 640.0 6967.0 -1.00 USDA's Ag Handbook 8 and sequelae)
BARIUM 0 Bulb 4.0 28.0 not available Duke, 1992 *
BENZYL-ISOTHIOCYANATE 20 Bulb not available not available not available Dorsch, W., Adam, O., Weber, J., Ziegeltrum, T. 1985. Antiasthmatic Effects of Onion Extracts - Detection of Benzyl- and Other Isothiocyanates (Mustard Oils) as Antiasthmatic Compounds of Plant Origin. Eur. J. Pharmacol., 107(1): 17-24.
BETA-CAROTENE 53 Bulb 0.0 52.0 1.00 Duke, 1992 *
BETA-CAROTENE 53 Flower not available 28.0 -0.19 Duke, 1992 *
BETA-CAROTENE 53 Leaf 12.0 158.0 -0.45 CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses
BETA-SITOSTEROL 47 Bulb 120.0 510.0 -1.00 Duke, 1992 *
BETA-SITOSTEROL 47 Seed not available not available not available Kintia, P. K., Degtiaryova, L. P., Balashova, N. N., Shvets, S. A. 1987. Sterols and Steroidal Glycosides of Bulb Onion Seeds. Fecs. Int. Conf. Chem. Biotechol. Biol. Act. Nat. Prod., (Proc.) 3rd: 166-170.
BETA-SITOSTEROL 47 Seed Oil not available not available not available Grujic-Injac, B., Basarevic-Dinic, L., Lajsic, S., Stefanovic, D. 1985. Chemical Analysis of Seed Oil of the Onion (Allium cepa). Hrana Ishrana, 25: 167-169 (Inst Ishr Vet Fak Belgrade, Yugoslavia)
BETA-TOCOPHEROL 0 Seed not available not available not available Duke, 1992 *
BETA-TOCOPHEROL 0 Seed Oil not available not available not available Grujic-Injac, B., Basarevic-Dinic, L., Lajsic, S., Stefanovic, D. 1985. Chemical Analysis of Seed Oil of the Onion (Allium cepa). Hrana Ishrana, 25: 167-169 (Inst Ishr Vet Fak Belgrade, Yugoslavia)
BORON 4 Bulb 1.0 45.0 1.00 Duke, 1992 *
BRASSICASTEROL 0 Seed not available not available not available Kintia, P. K., Degtiaryova, L. P., Balashova, N. N., Shvets, S. A. 1987. Sterols and Steroidal Glycosides of Bulb Onion Seeds. Fecs. Int. Conf. Chem. Biotechol. Biol. Act. Nat. Prod., (Proc.) 3rd: 166-170.
BROMINE 0 Bulb 1.0 15.0 not available ACTA AGRIC SCAND SUPPL 22: 1980
CADMIUM 3 Bulb 0.0 0.4 not available Duke, 1992 *
CAFFEIC-ACID 102 Bulb not available not available not available Duke, 1992 *
View the list of ubiquitous chemicals
List of plant activities.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Activity Chemical Count Reference
Insecticide 6 Duke, 1992 *
Insectifuge 10 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.
Insectiphile 4 Pakistan Encyclopedia Planta Medica. 1986.
Insulin-Sparing 3 Pizzorno, J.E. and Murray, M.T. 1985. A Textbook of Natural Medicine. John Bastyr College Publications, Seattle, Washington (Looseleaf).
Insulinase-Inhibitor 1 Economic & Medicinal Plant Research, 6: 157.
Insulinic 1 Duke, 1992 *
Insulinogenic 4 Duke, 1992 *
Insulinotonic 1 J. Agri. & Food Chemistry, 36: 1079.
Interferon-Synergist 1 Duke, 1992 *
Interferonogenic 1 Pizzorno, J.E. and Murray, M.T. 1985. A Textbook of Natural Medicine. John Bastyr College Publications, Seattle, Washington (Looseleaf).
Iodothyronine-Deiodinase-Inhibitor 1 Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Irritant 9 Merck 11th Edition
JNK-Inhibitor 1 Duke, 1992 *
Juvabional 3 Duke, 1992 *
Keratitigenic 1 Duke, 1992 *
Keratolytic 1 Martindale's 29th
Lachrymatory 1 Duke, 1992 *
Larvicide 4 Duke, 1992 *
Larvistat 2 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.
Laxative 11 Duke, 1992 *