Belavady B
Acta Paediatr Scand. 1978 Sep;67(5):566-71. doi: 10.1111/j.1651-2227.1978.tb17803.x.
The recent work on lipids and trace elements in human milk has been reviewed. Lipids in human milk are specially important for the development of the central nervous system of the infant, in addition to being a source of nutrients. Recent studies revealed that the concentration of total lipids was low in milk samples from Indian women belonging to the low socio-economic group: linoleic acid constituted a high percent of the fatty acids. The bile-stimulated lipase activity of milk was higher in Ethiopian than in Swedish milk samples. Vitamin D sulphate, the water soluble conjugate of vitamin D, was present in higher concentrations than that reported for vitamin D in lipid fraction; however, the antirachitic activity of vitamin D sulphate is yet to be studies. Copper, zinc, and magnesium concentrations were high in sampled obtained during the first month of lactation. Copper and zinc levels continued to fall gradually till the end of one year lactation. The mean concentrations of zinc and copper in mature milk samples from Indian mothers were similar to those in American samples, though both the samples showed wide variation. A high proportion of zinc in milk was bound to proteins.
近期有关人乳中脂质和微量元素的研究工作已得到综述。人乳中的脂质除了是营养来源外，对婴儿中枢神经系统的发育尤为重要。近期研究表明，来自社会经济地位较低群体的印度女性的乳汁样本中总脂质浓度较低：亚油酸在脂肪酸中所占比例较高。埃塞俄比亚人乳的胆汁刺激脂肪酶活性高于瑞典人乳样本。维生素D硫酸盐，即维生素D的水溶性共轭物，其浓度高于脂质部分中维生素D的报道浓度；然而，维生素D硫酸盐的抗佝偻病活性尚未得到研究。在哺乳期第一个月采集的样本中，铜、锌和镁的浓度较高。铜和锌的水平在哺乳期一年结束前持续逐渐下降。印度母亲成熟乳汁样本中锌和铜的平均浓度与美国样本相似，尽管两个样本都显示出很大差异。乳汁中很大一部分锌与蛋白质结合。
