Plant Allium cepa (Liliaceae) | Dr. Duke's Phytochemical and Ethnobotanical Databases

Common Names

Onion, Shallot

How this plant is used

Food

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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 Sort descending	Activity Count	Plant Part	Low Parts Per Million	High Parts Per Million	Standard Deviation	Reference
1(F)-BETA-FRUCTOSYL-SUCROSE	0	Bulb	not available	not available	not available	Bacon, J. S. D. 1959. Trisaccharide Fraction of Some Monocotyledons. Biochem. J., 73: 507-514.
1-(METHYLSULFINYL)-PROPYL-METHYL-DISULFIDE	1	Bulb	not available	not available	not available	Duke, 1992 *
1-(PROPYL-DITHIO)-PROPANE	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
1-METHYLDITHIO-PROPANE	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
1-METHYLTRITHIO-PROPANE	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
1-O-CAFFEOYL-BETA-D-GLUCOSE	0	Leaf	not available	not available	not available	Duke, 1992 *
1-O-FERULOYL-BETA-D-GLUCOSE	0	Leaf	not available	not available	not available	Duke, 1992 *
1-O-P-COUMAROYL-BETA-D-GLUCOSE	0	Leaf	not available	not available	not available	Duke, 1992 *
1-PROPYLTRITHIO-PROPANE	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
2,3-DIMETHYL-(DL)-BUTANE-CIS-1-CIS-DITHIAL-S,S'-DIOXIDE	0	Bulb	not available	not available	not available	Block, R., Bayer, T. 1990. (z,z)-d-1,2,3-dimethyl-1,4-butanedithial-s,s'-dioxide: A Novel Bilogically Active Organosulfur Compound from Onion. J. Amer. Chem. Soc., 112(11): 4584-4585.
2,3-DIMETHYL-5,6-DITHIA-BICYCLO(2,2,1)HEXANE-5-OXIDE	0	Bulb	not available	not available	not available	Duke, 1992 *
2,3-DIMETHYLTHIOPHENE	0	Bulb	not available	not available	not available	Kimura, K., Nishimura, H., Kimura, I., Iwata, I., Mizutani, J. 1984. Flavor Components of Roasted Onion. I. Changes in Flavor Components of Onion by Roasting. Nippon Eiyo Shokuryo Gakkaishi, 37(4): 343-347.
2,4-DIMETHYLTHIOPHENE	0	Bulb	not available	not available	not available	Kimura, K., Nishimura, H., Kimura, I., Iwata, I., Mizutani, J. 1984. Flavor Components of Roasted Onion. I. Changes in Flavor Components of Onion by Roasting. Nippon Eiyo Shokuryo Gakkaishi, 37(4): 343-347.
2,4-DIMETHYLTHIOPHENE	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
2,5-DIMETHYLTHIOPHENE	0	Bulb	not available	not available	not available	Duke, 1992 *
2,5-DIMETHYLTHIOPHENE	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
2-METHYL-BUT-2-EN-1-AL	0	Bulb	not available	not available	not available	Wilkens, W. F. 1962. The Isolation and Identification of the Lachrymogenic Compound of Onion. Diss. Abstr. Int. B, 22: 3978.
2-METHYL-BUT-2-EN-1-AL	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.
2-METHYL-BUTYR-2-ALDEHYDE	0	Bulb	not available	not available	not available	Wilkens, W. F. 1964. Isolation and Identification of the Lachrymogenic Compound of Onion. Cornell Univ., Agr. Expt. Sta. Mem. No., 385: 31 pp.
2-METHYL-PENT-2-EN-1-AL	0	Essential Oil	not available	not available	not available	Albrand, M., Dubois, P., Etievant, P., Gelin, R., Tokarska, B. 1980. Identification of a New Volatile Compound in Onion (Allium cepa) and Leek (Allium porum): 3,4-dimethyl-2,5-dioxo-2,5-dihydrothiophene. J. Agric. Food Chem., 28(5): 1037-1038.

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List of plant activities.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Activity Sort descending	Chemical Count	Reference
11B-HSD-Inhibitor	2 (View Chemicals list for 11B-HSD-Inhibitor)	Duke, 1992 *
5-Alpha-Reductase-Inhibitor	5 (View Chemicals list for 5-Alpha-Reductase-Inhibitor)	Duke, 1992 *
5-HT-Inhibitor	1 (View Chemicals list for 5-HT-Inhibitor)	Duke, 1992 *
5-Lipoxygenase-Inhibitor	9 (View Chemicals list for 5-Lipoxygenase-Inhibitor)	Duke, 1992 *
Abortifacient	1 (View Chemicals list for Abortifacient)	Duke, 1992 *
Acantholytic	1 (View Chemicals list for Acantholytic)	My Rodale Press Green Farmacy Draft, miscellaneous abstracts.
Acaricide	1 (View Chemicals list for Acaricide)	Duke, 1992 *
Acarifuge	1 (View Chemicals list for Acarifuge)	Duke, 1992 *
ACE-Inhibitor	3 (View Chemicals list for ACE-Inhibitor)	Duke, 1992 *
Acetylcholinergic	1 (View Chemicals list for Acetylcholinergic)	Duke, 1992 *
Acidifier	1 (View Chemicals list for Acidifier)	Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Acidulant	3 (View Chemicals list for Acidulant)	Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Additive	2 (View Chemicals list for Additive)	Aloe Research Council - Duke writeup of non-peer reviewd book by Coats and draft by Henry
Adjuvant	1 (View Chemicals list for Adjuvant)	Merck 11th Edition
Aggregant	1 (View Chemicals list for Aggregant)	Pizzorno, J.E. and Murray, M.T. 1985. A Textbook of Natural Medicine. John Bastyr College Publications, Seattle, Washington (Looseleaf).
Albuminurigenic	1 (View Chemicals list for Albuminurigenic)	Commission E. Blumenthal,M.,Hall,T. and Rister,R.S. eds.1997.The ABC's German Commission E Monographs - Therapeutic Monographs on Medicinal Plants for Human Use by Commission E - A Special Expert Committee of the German Federal Health Agency.ABC.Austin TX
Alcohol-Dehydrogenase-Inhibitor	1 (View Chemicals list for Alcohol-Dehydrogenase-Inhibitor)	LAWSON in Koch, H. P. and Lawson, L. D., eds. 1996. Garlic- The Science and therapeutic application of Allium sativum L. and related species. Williams & Wilkins, Baltimore. 329 pp.
Aldehyde-Oxidase-Inhibitor	2 (View Chemicals list for Aldehyde-Oxidase-Inhibitor)	Duke, 1992 *
Aldose-Reductase-Inhibitor	9 (View Chemicals list for Aldose-Reductase-Inhibitor)	Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
Allelochemic	3 (View Chemicals list for Allelochemic)	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.