西安市主城区健康乳母产后不同时期乳汁成分分析

Analysis of the components in human milk of health mothers in different periods in urban area in Xi'an

目的研究人乳成分在不同时期的动态变化规律，以指导婴儿合理喂养。方法选取121名健康乳母，分别在其产后1～6、8、10、12月采集前乳和后乳，采用MIRISHMA型人乳分析仪检测其中的蛋白质、脂肪、糖类、干物质含量以及能量。结果前乳和后乳中蛋白质含量在产后前3个月明显高于其它月份。乳汁中脂肪和能量的变化是一致的，前乳中脂肪、能量在产后12月内无差异，后乳中脂肪及能量10、12月组高于其它各组。产后1月前、后乳蛋白质含量差异无统计学意义，之后各组前乳均高于后乳。各个时期脂肪含量、能量、干物质后乳均明显高于前乳，而糖类含量前乳均高于后乳。结论人乳在产后不同时期有其自身的变化规律。

Objective To study the dynamic changes of human milk components in different periods in order to guide the rational feeding to the baby. Methods One hundred and twenty one health mothers were surveyed. The contents of protein, fat,carbohydrate, energy and dry matters in their milk before and after feeding were determined by MIRIS human milk analyzer. Results The contents of protein in milk in 1st～ 3rd months after delivery were significantly higher than oth- er months. The change of fat and energy in milk was consistent. The fat and energy in the milk before feeding were no differ- ence in different months. The fat and energy in the milk after feeding in the tenth and twelfth months were significantly higher than those of other months. The contents of protein in milk before and after feeding in the first month after delivery were no obvious difference, and they were higher in the milk before feeding than those in the milk after feeding in other months. The contents of fat and dry matters and energy were significantly higher in the milk after feeding than those in the milk before feeding in each period,while the contents of carbohydrate were higher in the milk before feeding than those in the milk after feeding in each period. Conclusion Human milk has its own changes in different periods of postpartum.