Results 211 to 220 of about 1,210,464 (279)
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Biotechnology advances in β-carotene production by microorganisms
, 2021Background Beta-Carotene, a type of carotenoid commonly found in plants, fungi and algae, is the most common and stable natural pigment found in nature.
Lin Wang +3 more
semanticscholar +1 more source
European journal of clinical nutrition, 1996
Beta-carotene has been shown to exhibit a good radical-trapping antioxidant activity in vitro. We were interested to see if dietary beta-carotene in combination with various intake levels for vitamin A would also inhibit lipid peroxidation.Sixty male Wistar rats received vitamin A (as retinyl palmitate) for 14 weeks in the diet (40,000, 4000 and 400 IU/
Bast, A. +3 more
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Beta-carotene has been shown to exhibit a good radical-trapping antioxidant activity in vitro. We were interested to see if dietary beta-carotene in combination with various intake levels for vitamin A would also inhibit lipid peroxidation.Sixty male Wistar rats received vitamin A (as retinyl palmitate) for 14 weeks in the diet (40,000, 4000 and 400 IU/
Bast, A. +3 more
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Bioavailability of beta-carotene in humans
The American Journal of Clinical Nutrition, 1988Normal healthy volunteers were studied after they ingested various beta-carotene doses. Daily administration of 15 or 45 mg beta-carotene resulted in significant increase in plasma beta-carotene levels. The extent of increase and the pattern of plasma beta-carotene levels showed substantial interindividual variation.
N V, Dimitrov +7 more
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Beta Carotene in Congenital Porphyria
Archives of Dermatology, 1979To the Editor.— In answer to Dr G. S. Stretcher's request for information on the use of beta carotene in congenital porphyria (Archives114:1242-1243, 1978), I would like to bring to his attention two reports of the use of beta carotene in this disease.
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Beta Carotene in Congenital Porphyria
Archives of Dermatology, 1978To the Editor.— Dr George Stretcher, in his article on erythropoietic porphyria, which appeared in the NovemberArchives(113:1553-1557,1977), makes a reference to the lack of information about the long-term treatment with beta carotene. In 1973,I described a young woman, aged 18, with congenital porphyria at the Royal Society of Medicine ( Proc R Soc ...
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Beta‐Carotene in HIV Infectiona
Annals of the New York Academy of Sciences, 1993beta-Carotene has been reported to have an immunostimulatory effect. Recent studies suggest that beta-carotene supplementation can increase CD4 counts in HIV-infected patients. Our double-blind, placebo-controlled clinical trial was designed to test the efficacy of beta-carotene in raising CD4 counts in HIV-infected patients.
G O, Coodley +3 more
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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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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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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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