Authors
Cheryl L Rock, Jennifer L Lovalvo, Curt Emenhiser, Mack T Ruffin, Shirley W Flatt, Steven J Schwartz
Publication date
1998/5/1
Journal
The Journal of nutrition
Volume
128
Issue
5
Pages
913-916
Publisher
Elsevier
Description
Populations at risk of vitamin A deficiency usually rely on dietary provitamin A carotenoids to meet vitamin A needs, yet bioavailability of these compounds is influenced by several factors as follows: location in the plant source, the presence of other influencing dietary components, and type and extent of processing. The purpose of this study was to examine the plasma β-carotene response to raw vs. processed carrots and spinach. Subjects were eight healthy females aged 23–36 y who consumed ∼9.3 mg β-carotene daily from either raw or thermally processed and pureed vegetables in two 4-wk treatment periods in a crossover study. Plasma concentrations of total, all-trans-, and cis-β-carotene and α-carotene were measured at base line and the end of each treatment period by using HPLC assays. Total and all-trans (but not cis) plasma β-carotene concentrations were significantly greater than base-line …
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Scholar articles
CL Rock, JL Lovalvo, C Emenhiser, MT Ruffin, SW Flatt… - The Journal of nutrition, 1998