Lexic.us

Definition of Carotene

1. Noun. An orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver.

Definition of Carotene

1. Noun. (organic chemistry) A class of tetraterpene plant pigments; they vary in colour from yellow, through orange to red, this colour originating in a chain of alternating single and double bonds. ¹

2. Noun. (organic chemistry) Specifically, a number of isomers of tetraterpene hydrocarbons, C₄₀H₅₆, (especially ''beta-carotene''), present in carrots etc, which are converted into vitamin A in the liver. ¹

¹ Source: wiktionary.com

Definition of Carotene

1. a plant pigment [n -S]

Medical Definition of Carotene

1. Hydrocarbon carotenoids usually with 9 conjugated double bonds. _ carotene is the precursor of Vitamin A, each molecule giving rise to two Vitamin A molecules. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Carotene

Literary usage of Carotene

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1879)
"(1) The inhibitory effect of /3-carotene in the photochemical reaction is not caused by quenching of triplet sensitizer, since the intercepts of the lines ..."

2. Alternative Medicine: Expanding Medical Horizons by DIANE Publishing Company (1995)
"Beta-carotene. Alexander and colleagues (1985) reported that extremely large oral doses of beta- carotene (180 mg per day) can increase the number of CD4 ..."

3. A Lifelong Passion: Nicholas and Alexandra: Their Own Story by Andrei Maylunas (2005)
"The associations of retinol and beta-carotene plasma concentrations with eight ... Dietary carotene and female sex were positively related to beta-carotene ..."

4. Biotechnology of Algae: A Bibliography by Virginia Stone (1994)
"carotene was elucidated by analysis of the effect of selected inhibitors. ... carotene in the untreated algae. It is deduced, therefore, ..."

5. Composition on Foods: Fast Foods (Raw, Processed, Prepared) by Lynn E. Dickey, John L. Weihrauch (1988)
"One IU is equivalent to 0.3 meg of retinol or 0.6 meg of beta-carotene; one RE is equivalent to 1 meg of retinol or 6 meg of beta-carotene. ..."

6. Code of Federal Regulations 21: Food And Drugs 2005 by Food and Drug Administration (FDA) Staff (2005)
"(3) Beta-carotene may be declared as the percent of vitamin A that is present as beta-carotene, except that the declaration is required when a claim is made ..."

7. Guide to Clinical Preventive Services: Report of the U. S. Preventive by DIANE Publishing Company (1996)
"... suggested that low-dose isotretinoin was more effective in maintaining remissions than {J-carotene and caused fewer side effects than high-dose therapy: ..."

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