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One of two cyclic terpene ketones with an odor of violets or cedar wood, the α and β varieties of which differ in the location of the double bond in the ring: provitamins A and vitamin A have ionone configuration in the ring portion; α-carotene contains one α- and one β-ionone moieties, β-carotene contains two β-ionone moieties, and γ-carotene contains one β-ionone moiety.
Farlex Partner Medical Dictionary © Farlex 2012


One of two cyclic terpene ketones with an odor of violets or cedar wood.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
(6) The presence of irones, homologues, and ionones, was reported mainly in the rhizomes of I.
Linalool, [alpha]-pinene, [beta]-pinene, myrcene, [alpha]-terpinene, [alpha]- ionone, rose oxide, and citronellol, which have been previously identified in yellow and purple passion fruits, were investigated and not identified in any of the sweet passion fruit genotypes.
Keloid Care is carefully formulated with Silicone, Vitamin E, Hydrocortisone, and Beta Ionone - a powerful anti-oxidant proven to nourish the skin and help improve the appearance of thick, stubborn or hard to treat scars.
EPA's treatment of the ionone derivatives category, substances which naturally occur in plants containing [beta]-carotene.
Kawakami, "Ionone series compounds from beta-carotene by thermal degradation in aqueous medium," Nippon Nogeikagaku Kaishi, vol.
Bucinal, HHCB, and methyl ionone were the most frequently detected synthetic fragrance chemicals in conventional product samples.
The key aroma active compounds in vitamin A and D concentrates were: hexanal, Z-3hexen-1-ol, isoamyl acetate, octanal, limonene, phellandrene, damascone, ionone, cyclocitral and irone.
The investigators found ethyl butanoate, ethyl hexanoate, linalool, 2-heptanone, ionone, 2-heptanol, hexanal, cis-3-hexenol, trans-2-hexenol and furaneol to be the major aroma compounds in Black Diamond.
The correlation between carotenoid degradation caused by processing and the production of degradative terpenes such as ionones has been described by Kanasawud and Crouzet [33].