Li J Z, Yoshinaga J, Suzuki T, Abe M, Morita M
Department of Human Ecology, School of Health Sciences, Faculty of Medicine, University of Tokyo, Japan.
J Nutr Sci Vitaminol (Tokyo). 1990 Feb;36(1):65-74. doi: 10.3177/jnsv.36.65.
Mineral and trace element content of the human transitory milk collected on days 6 to 9 postpartum in Tokyo was measured by inductively coupled plasma atomic emission spectrometry (ICP-AES). Ten elements (Na, Mg, P, S, K, Ca, Fe, Cu, Zn, and Sr) were detected in ten-fold diluted milk sample with this method. With the stepwise multiple regression analysis, maternal and infants' biological attributes, such as weight, stature, sex, or age, were noted as factors contributing to the interindividual variation in Na, Mg, P, S, and Sr. Biological mechanism responsible for this selection cannot be found. Days postpartum for the milk collection was selected as a highly significant (p less than 0.001) variable with negative coefficient to explain milk S variation.
采用电感耦合等离子体原子发射光谱法（ICP - AES）测定了东京产后6至9天采集的人体过渡乳中的矿物质和微量元素含量。用该方法在稀释十倍的乳样中检测到了十种元素（钠、镁、磷、硫、钾、钙、铁、铜、锌和锶）。通过逐步多元回归分析发现，母亲和婴儿的生物学属性，如体重、身高、性别或年龄，是导致钠、镁、磷、硫和锶个体间差异的因素。目前尚未发现造成这种选择的生物学机制。采集乳汁的产后天数被选为解释乳汁中硫含量变化的具有高度显著性（p小于0.001）且系数为负的变量。
