beta carotene


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beta carotene

[′bād·ə ′kar·ə‚tēn]
(biochemistry)
C40H56 A carotenoid hydrocarbon pigment found widely in nature, always associated with chlorophylls; converted to vitamin A in the liver of many animals.
References in periodicals archive ?
The amount of beta carotene in roots stored under different conditions tended to increase in the first month of storage.
In another study, over 22,000 male physicians aged 40 to 84 were randomly assigned to receive either beta carotene or a placebo from 1984 to 1995.
Sweet potatoes are very high in beta carotene and vitamin C.
The initial analyses were done for vitamin E, selenium, beta carotene and vitamin A; the new analyses added total carotenoids and lycopene.
Sold under Pharmavite's Nature's Resource[R] brand, new CranAssure combines Ocean Spray's high potency cranberry extract with vitamin C, beta carotene and selenium in a convenient, low calorie2, safe and effective softgel.
German researchers conducted a meta-analysis and identified seven relevant studies of the association between beta carotene supplementation and sunburn risk.
PHILADELPHIA -- Long-term beta carotene supplementation could significantly reduce the risk of developing Alzheimer's disease, Francine Grodstein, Sc.
DSM Food Specialties has launched its non-gelatin, vegetarian-approved, beta carotene beadlets under the CaroCare[R] brand name.
Why did high doses of beta carotene supplements apparently increase lung cancer rates in smokers in two large intervention trials a few years ago?
One large, double-blind study of beta carotene and vitamin A, for example, was stopped early because the supplements were associated with an increase in lung cancer and overall mortality.
However, none of the studies had looked at the individual and combined effects of the most common dietary antioxidants: vitamin C and beta carotene, which are present in fruits and vegetables; vitamin E, found in plant-derived oils; and selenium, present in whole grains, meats, and nuts.
His work and that of others already has pumped up beta carotene - a substance associated with cancer prevention - in commercial carrots by about 60 percent, from 90 parts per million to 150 ppm.