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
QUINIC-ACID 1 Bulb not available not available not available Duke, 1992 *
RAFFINOSE 1 Bulb not available not available not available Osman, S. A. 1980. Chemical and Biological Studies of Onion and Garlic in an Attempt to Isolate a Hypoclycaemic Extract. Abstr. 4th Asian Symp. Med. Plants Spices Bangkok, Thailand, September 15-19: 117.
RAFFINOSE 1 Leaf not available not available not available Osman, S. A. 1980. Chemical and Biological Studies of Onion and Garlic in an Attempt to Isolate a Hypoclycaemic Extract. Abstr. 4th Asian Symp. Med. Plants Spices Bangkok, Thailand, September 15-19: 117.
RHAMNOSE 0 Bulb not available not available not available Sinha, A. 1959. Chemical Examination of Allium cepa. I. Glycosidic and Sugar Fractions. Indian J. Appl. Chem., 22: 89-91.
RIBOFLAVIN 15 Bulb 0.4 15.0 1.00 Duke, 1992 *
RIBOSE 0 Bulb not available not available not available Sinha, A. 1959. Chemical Examination of Allium cepa. I. Glycosidic and Sugar Fractions. Indian J. Appl. Chem., 22: 89-91.
RUBIDIUM 0 Bulb 0.1 6.6 not available ACTA AGRIC SCAND SUPPL 22: 1980
RUTIN 87 Bulb not available 14000.0 not available Duke, 1992 *
S-(2-CARBOXY-PROPYL)-GLUTATHIONE 0 Bulb not available 125.0 -1.00 Tsuboi, S., Kishimoto, S., Ohmori, S. 1989. S-(2-carboxypropyl)glutathione in Vegetables in Liliflorae. J. Agric. Food Chem. 37(3): 611-615.
S-(BETA-CARBOXY-BETA-METHYL-ETHYL)-CYSTEINE 0 Bulb not available not available not available Virtamen, A. I., Matikkala, E. J. 1960. New Gamma-Glutamyl Peptides in Onion (Allium cepa). I. Gamma-glutamylphenylalanine and gamma-glutamyl-s-(beta-carboxy-beta-methylethyl)-cysteinylglycine. Suomen Kemistilehti, 33B: 83-84.
S-(BETA-CARBOXYBETA-METHYL-ETHER)-CYSTEINE 0 Bulb not available not available not available Duke, 1992 *
S-ALLYL-CYSTEINE 0 Bulb not available not available not available Renis, H. E., Henze, R. E. 1957. Studies on Sulfur Compounds from Onion. Diss. Abstr. Int. B, 17: 1456-1457.
S-METHYL-CYSTEINE 0 Bulb 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.
S-METHYL-CYSTEINE-SULFOXIDE 2 Bulb not available not available not available Kumari, K., Augusti, K. T. 1995. Antidiabetic Effects of S-Methylcysteine Sulphoxide on Alloxan Diabetes. Planta Medica, 61(1): 72-74.
S-PROP-1-ENYL-CYSTEINE-S-OXIDE 0 Bulb not available 26.0 not available Duke, 1992 *
S-PROPYL-CYSTEINE-SULFOXIDE 0 Bulb not available not available not available Renis, H. E., Henze, R. E. 1957. Studies on Sulfur Compounds from Onion. Diss. Abstr. Int. B, 17: 1456-1457.
SALICYLATES 7 Bulb 1.0 20.0 1.00 Duke, 1992 *
SAPONIN 0 Bulb not available not available not available Duke, 1992 *
SAPONINS 5 Bulb not available not available not available Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp.
SATIOMEM 0 Bulb not available not available not available Upreti, R. K., Ahmad, S., Shukla, S., Kidwai, A. M. 1994. Experimental Anorexigenic Effect of a Membrane Proteoglycan Isolated from Plants. J. Ethnopharmacology, 42(1): 53-61.
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
Antitumor (Mouth) 1 Duke, 1992 *
Antitumor (Ovary) 2 Duke, 1992 *
Antitumor (Pancreas) 1 Chiang, L. C., Chiang, W., Chang, M. Y., Ng, L. T., Lin, C. C. 2003. Antileukemic activity of selected natural products in Taiwan. Am J Chin Med, 31(1):37-46.
Antitumor (Prostate) 4 Duke, 1992 *
Antitumor (Skin) 4 Duke, 1992 *
Antitumor (Stomach) 5 Duke, 1992 *
Antitumor-Promoter 9 Cancer Research, 48: 5941.
Antitussive 2 Duke, 1992 *
Antiulcer 16 Duke, 1992 *
Antiulcerogenic 2 Duke, 1992 *
Antiuremic 1 Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Antiuricosuric 1 Newall, C. A., Anderson, L. A. and Phillipson, J. D. 1996. Herbal Medicine - A Guide for Health-care Professionals. The Pharmaceutical Press, London. 296pp.
Antivaccinia 1 Economic & Medicinal Plant Research, 5: 207.
Antivaginitic 2 Duke, 1992 *
Antivaricose 3 Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Antivertigo 1 Duke, 1992 *
Antiviral 18 Duke, 1992 *
Antiviral? 1 Martindale's 29th
Antivitiligic 1 Martindale's 29th
Antixerophthalmic 1 Davies, S., and Stewart, A. 1990. Nutritional Medicine. Avon Books, New York. 509pp.