carotene


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Related to carotene: alpha carotene

carotene

(kâr`ətēn'), long-chained, unsaturated hydrocarbon found as a pigment in many higher plants, particularly carrots, sweet potatoes, and leafy vegetables. Carotene is thought to assist in trapping light energy for photosynthesisphotosynthesis
, process in which green plants, algae, and cyanobacteria utilize the energy of sunlight to manufacture carbohydrates from carbon dioxide and water in the presence of chlorophyll. Some of the plants that lack chlorophyll, e.g.
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 or to aid in chemical reduction. It is important in animal biology as the main dietary source of vitamin A (see vitaminvitamin,
group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes, or they form integral parts of coenzymes.
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), which is produced by splitting one molecule of carotene into two molecules of vitamin A. Carotene that is thus converted is called provitamin A. This reaction occurs in either the liver or intestinal wall. The absorption of dietary carotene is dependent on the action of bile. Its absorption is less efficient than that of vitamin A. High intake of dietary carotene is being studied for its disease prevention potential. Carotenes are the simplest of a group of natural pigments called carotenoids, of which there are more than 600.

carotene

[′kar·ə‚tēn]
(biochemistry)
C40H56 Any of several red, crystalline, carotenoid hydrocarbon pigments occurring widely in nature, convertible in the animal body to vitamin A, and characterized by preferential solubility in petroleum ether. Also known as carotin.

carotene

, carotin
any of four orange-red isomers of an unsaturated hydrocarbon present in many plants (β-carotene is the orange pigment of carrots) and converted to vitamin A in the liver. Formula: C40H56
References in periodicals archive ?
Product Segment - Beta- Carotene, Lutein, Astaxanthin,
The analytic imprecision of this carotene assay is 6.
Your body changes beta carotene into a form of vitamins A.
There is, however, still no conclusive evidence that beta carotene is itself responsible for the decreased rates of cancer in persons with vegetable-rich diets.
Beta] - carotene 10% CWS Star - a high performance and natural-source [Beta] - carotene formulation for the colouration and fortification of food and beverages.
Using isotopes to tag carotenoids in kale, a food especially rich in nutrients, researchers have increased their understanding of how the human body absorbs and uses carotenoids from a whole food and how efficiently the body uses beta carotene to form vitamin A.
Grapefruits contain carotene and therefore precious antioxidants, including vitamin C.
PHILADELPHIA -- Long-term beta carotene supplementation could significantly reduce the risk of developing Alzheimer's disease, Francine Grodstein, Sc.
They are especially high in beta carotene, which the body turns into vitamin A.
Beta - Carotene, or -carotene is an important pigment and ingredient in food, pharmaceutical and cosmetics industry.
Lucuma is low glycemic, high in iron, zinc, potassium, calcium, magnesium and vitamin B3, and it is a "great source of beta carotene, fiber and bio-available protein.