文章基本信息

标题：Changes in Zinc and Copper Concentrations in Breast Milk and Blood of Japanese Women during Lactation
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作者：Masatoshi OHTAKE ; Tsunenobu TAMURA
期刊名称：Journal of Nutritional Science and Vitaminology
印刷版ISSN：0301-4800
电子版ISSN：1881-7742
出版年度：1993
卷号：39
期号：2
页码：189-200
DOI：10.3177/jnsv.39.189
出版社：Center for Academic Publications Japan
摘要：To evaluate the changes in zinc and copper concentrations in breast milk and maternal blood during lactation, milk and blood samples were obtained from 80 lactating women during the period be-tween 2 and 201 days of lactation. Zinc and copper concentrations were measured by atomic absorption spectrophotometry. Breast milk zinc and copper concentrations markedly decreased during the first few weeks of lactation and gradually declined for the remaining period. Mean values of milk zinc and copper levels were 1.76 and 0.29g/ml, respectively, be-tween 15 and 84 days after parturition and were 0.76 and 0.19μg/ml between 85 and 201 days of lactation. Calculated daily intakes of these minerals for infants from breast milk were markedly lower than those of U5 Recommended Dietary Allowances. Plasma zinc levels of lactating mothers increased as lactation progressed, whereas erythrocyte zinc and plasma copper concentrations decreased. Plasma zinc and copper and erythrocyte zinc values returned to normal approximately three months after parturition.
关键词：zinc;copper;human milk;plasma;erythrocyte;lactation;intake;requirement;infants;lactating women