Carotenoids and provitamin A activity of carrot (Daucus carota L.) cultivars
1990
Heinonen, M.I.
The carotenoid and provitamin A content of 19 cultivars of orange carrot (Daucus carota L.) were analyzed by high-performance liquid chromatography. The amounts of the predominant carotenoids, alpha- and beta-carotene, ranged from 2200 to 4900 and from 4600 to 10 300 microgram/100 g of fresh weight, respectively. High alpha- and beta-carotene contents were found especially in carrot cultivars Nantes Duke Notabene 370, Nantes Fancy Notabene 405, Narbonne F1 BZ, Nelson F1 BZ, Nantucket F1 BZ, and Berlicum R. The tentatively identified 15-cis-beta-carotene accounted for approximately 4.3% (range 1.3-12.9%) of the amount of all-trans-beta-carotene. All carrot cultivars contained gamma-carotene (range 630-2700 microgram/100 g of fresh weight). Also, lutein (110-560 microgram/100 g of fresh weight) was present. Expressed as retinol equivalents (RE, microgram/100 g), the amount of provitamin A in carrot cultivars was between 1200 and 2300, an amount high enough to satisfy the human daily need of vitamin A.
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