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Lack of genotoxicity with beta-carotene
Toxicology Letters, 1988A literature review was conducted on adverse effects of carotenoids on human and animal development. The data suggest that beta-carotene administration prevented genetic damage caused by mutagens both in bacterial and cell culture systems, and that large doses of pure beta-carotene do not cause embryotoxicity in rodents.
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Beta-Carotene: Thermal Degradation
Science, 1964Thermal treatment of crystalline β-carotene (240°C in a vacuum) results in the formation of a volatile fraction containing chiefly aromatic hydrocarbons such as toluene, m - and p -xylene, 2,6-dimethylnaphthalene, and ionene.
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13-cis-Beta,beta-carotene and 15-cis-beta,beta-carotene.
Acta crystallographica. Section C, Crystal structure communications, 200813-cis-Beta,beta-carotene, C(40)H(56), crystallizes with a complete molecule in the asymmetric unit, whereas 15-cis-beta,beta-carotene, also C(40)H(56), has twofold symmetry about an axis through the central bond of the polyene chain. The polyene methyl groups are arranged on one side of the polyene chains for each molecule and the 6-s-cis beta end ...
Giuditta, Bartalucci +4 more
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Serum beta-carotene before and after beta-carotene supplementation.
European journal of clinical nutrition, 1992A two-month double-blind, placebo-controlled supplementation study of oral beta-carotene (20 mg daily) was conducted. Two hundred and twenty two 30-69 year old men were randomized into either a beta-carotene or placebo group, and serum samples were obtained at baseline, follow-up (2 months), and up to 12 weeks post-supplementation.
D, Albanes +6 more
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Effects of Dietary Protein, Fat and beta-Carotene Levels on beta-Carotene Absorption in Rats
International Journal for Vitamin and Nutrition Research, 2005It is important that the factors influencing functional carotenoid absorption be made clear. The effect of rat diets containing different combinations of dietary protein, fat, and beta-carotene levels on beta-carotene absorption was evaluated. In the mid-level beta-carotene diet groups (1.8 mg beta-carotene/100 g diet), the retinol content in the ...
Keisuke, Hosotani, Masahiro, Kitagawa
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Nutrition and cancer, 1989
Epidemiological studies have associated low dietary and/or plasma level of carotenoids with higher incidences of certain cancers. This evidence has led the National Cancer Institute to initiate more than a dozen prospective clinical trials in which supplements of beta-carotene alone, or in combination with other micronutrients, are being taken.
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Epidemiological studies have associated low dietary and/or plasma level of carotenoids with higher incidences of certain cancers. This evidence has led the National Cancer Institute to initiate more than a dozen prospective clinical trials in which supplements of beta-carotene alone, or in combination with other micronutrients, are being taken.
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1991
An infant is brought to the visiting American physician. She has seen children like this before and is not surprised when the interpreter tells her that the baby is sick and doesn’t open his eyes. A quick examination confirms her fears: the child is blind; behind his closed lids the corneas have dissolved into a shapeless jelly.
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An infant is brought to the visiting American physician. She has seen children like this before and is not surprised when the interpreter tells her that the baby is sick and doesn’t open his eyes. A quick examination confirms her fears: the child is blind; behind his closed lids the corneas have dissolved into a shapeless jelly.
openaire +1 more source