Dietary intakes of selected elements from longitudinal 6-day duplicate diets for pregnant and nonpregnant subjects and elemental concentrations of breast milk and infant formula
Dietary intakes of selected elements from longitudinal 6-day duplicate diets for pregnant and nonpregnant subjects and elemental concentrations of breast milk and infant formula
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DOI：
10.1006/enrs.2001.4309
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发表时间：
2001-12-01
影响因子：
8.3
通讯作者：
Taylor, AJ
中科院分区：
文献类型：
--
作者：
Gulson, BL;Mizon, KJ;Taylor, AJ
作为对妊娠期和哺乳期母体骨骼中铅的动员进行纵向调查的一部分，我们确定了不同受试者的选定元素（以下称为微量营养素）的每日摄入量，并将这些摄入量与推荐和/或公布的摄入量进行了比较，特别是通过美国国家健康和营养检查调查（NHANES）对美国的摄入量进行了比较。我们还试图确定饮食是否有任何季节性影响。从15名孕妇和16名非孕妇移民到澳大利亚，6名怀孕的澳大利亚对照组和8名儿童的非怀孕移民（6至11岁），收集了为期6天的重复饮食。母乳和婴儿配方奶粉的样本也进行了分析。通过电感耦合等离子体质谱法分析混合样品中的元素Ca、Cu、Fe、Mg、P、K、Na、Zn、Ba、Sr和Pb。微量营养素的每日摄入量仅为美国NHANES III中非西班牙裔白色女性和婴儿每日摄入量估计值的一半左右。与美国NHANES III中非西班牙裔白色婴儿的食物组成和饮食回忆表中提取的值相比，移民和澳大利亚婴儿的母乳每日摄入量估计值也要低得多。例如，钙是一个类似于3倍低的系数，铁类似于50，锌类似于4。我们认为我们的估计值是每日摄入量的可靠指标，原因有几个，包括收集多达9个季度的6天重复饮食和保留纵向前瞻性研究中的受试者。从公共卫生的角度来看，所有这些人群中钙、铁和锌等必需元素的低摄入量都是潜在的问题。(C)2001年，爱思唯尔科学。
As part of a longitudinal investigation into mobilization of lead from the maternal skeleton during pregnancy and lactation, we have determined the daily intake of selected elements (hereafter called micronutrients) for various subjects and compared these intakes with recommended and/or published intakes, especially those of the United States, through the U.S. National Health and Nutrition Examination Survey (NHANES). We also sought to ascertain whether there was any seasonal effect in the diets. Six-day duplicate diets were collected from 15 pregnant and 16 nonpregnant migrants to Australia, 6 pregnant Australian control subjects, and 8 children of nonpregnant migrants (6 to 11 years). Samples of breast milk and infant formula were also analyzed. Blended samples were analyzed by inductively coupled plasma mass spectrometry for the elements Ca, Cu, Fe, Mg, P, K, Na, Zn, Ba, Sr, and Pb. Daily intakes of micronutrients were only about half of the daily intake estimated for non-Hispanic white females and infants in the U.S. NHANES III. Estimates of daily intakes from breast milk were also considerably lower for the migrant and Australian infants compared with the values extracted from tables of food composition and dietary recall for non-Hispanic white infants in the U.S. NHANES III. For example, Ca was a factor of similar to3 times lower, Fe similar to50, and Zn similar to4. We consider our estimates a reliable indication of the daily intakes for several reasons, including the collection of up to nine quarterly collections of 6-day duplicate diets and retention of subjects in a longitudinal prospective study. The low intakes of the essential elements such as Ca, Fe, and Zn in all these population groups are of potential concern from a public health viewpoint. (C) 2001 Elsevier Science.