Iron bioavailability from diets consumed by different socioeconomic strata of the Venezuelan population.
Iron bioavailability from diets consumed by different socioeconomic strata of the Venezuelan population.
复制标题
委内瑞拉人口不同社会经济阶层饮食中铁的生物利用度。
DOI：
10.1093/jn/125.7.1860
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
M. Layrisse
中科院分区：
文献类型：
--
作者：
Peter Taylor;Hernán Méndez;C. Martínez;Werner Jaffe;Mercedes López de Blanco;M. Landaeta;I. Leets;E. Tropper;J. Ramírez;Mariá de Las Nieves García Casal;M. Layrisse
The iron bioavailability from three typical diets consumed by socioeconomic stratum IV (SES IV--working class) of the Venezuelan population was determined by the extrinsic label method. Although the iron content of the SES IV diets was about the same (250 mumol/d) as that of upper (SES I-III) and lower (SES V) socioeconomic strata diets, iron-replete subjects absorbed 43 and 61% more iron from the SES I-III diets than from the SES IV and V diets, respectively, and absorption from the main meal of the SES I-III diets was 100% greater. However, iron deficient subjects absorbed about the same amount of iron (45 mumol/d) from the SES IV diets as from the SES I-III diets. The SES I-III diets contained more iron absorption enhancers (ascorbic acid and meat protein) and less of the inhibitor phytate, than the SES IV and V diets. Iron absorption from the meals of four diets consumed at different times during the day was also measured. There was no significant difference in the percentage iron absorption from the same meals eaten in the morning after an overnight fast, and when eaten at the customary time of day.
