alexa Evaluation of vitamin A and carotenoid data in food composition tables.
Biomedical Sciences

Biomedical Sciences

Journal of Bioengineering & Biomedical Science

Author(s): Beecher GR, Khachik F

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Abstract Vitamin A and carotenoid data in food composition tables have been generated with the use of the Association of Official Analytical Chemists procedures. These procedures fractionate complex mixtures of retinoids and carotenoids into only three fractions, e.g., retinoids, carotenes, and xanthophylls. Food tables lack uniformity in the presentation of vitamin A and carotenoid data. For example, the revisions of Agriculture Handbook, No. 8 (Washington, D.C.: U.S. Govt Print Off, 1963), report both international units and retinol equivalents of vitamin A in foods. Food tables published in the United Kingdom (Paul AA, Southgate DA. McCance and Widdowson's: The composition of foods. Amsterdam: Elsevier/North-Holland, 1978) report preformed vitamin A as retinol and carotenoids as carotene on a weight basis (micrograms/100 g food). The vitamin A and carotenoid data currently available in food composition tables allow only the intake of total vitamin A activity to be estimated. Information about the intake of specific species of retinoids or carotenoids is not available and could not be calculated from existing food tables. Limited applications of new separation techniques and chemical instrumentation have demonstrated the potential for generating detailed analytic information in regard to the retinoid and carotenoid contents of foods.
This article was published in J Natl Cancer Inst and referenced in Journal of Bioengineering & Biomedical Science

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