| Autor: |
Brown, E. D., Micozzi, M. S., Craft, N. E., Bieri, J. G., Beecher, G., Edwards, B. K., Rose, A., Taylor, P. R., Smith, Jr., J. C. |
| Předmět: |
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| Zdroj: |
American Journal of Clinical Nutrition; Jun1989, Vol. 49 Issue 6, p1258-1265, 8p, 1 Diagram, 3 Charts, 3 Graphs |
| Abstrakt: |
Changes in seven plasma carotenoids were measured in 30 men for 11 d after ingesting a single dose of pure β-carotene or a high carotenoid vegetable. A controlled, low-carotenoid diet was fed in a crossover design. Maximum plasma concentrations of β-carotene occurred 24-48 h after dosing with β-carotene (12 or 30 mg) or carrots (270 g). A large intake of broccoli (600 g) or tomato juice (180 g) did not change any plasma carotenoids. We concluded that 1) normal subjects vary widely, three to fourfold, in efficiency of carotenoid absorption; 2) peak plasma response to a-carotene in a capsule occurs at 24-48 h; 3) a large single intake of carrots produces a small increase in plasma β-carotene but single intakes of broccoli or tomato juice do not change plasma carotenoids; and 4) plasma response to pure β-carotene is greater than the response to a similar amount of β-carotene in carrots. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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