- 期刊
Amino Acid Composition of Lactating Mothers' Milk and Confinement Diet in Rural North China
中国北方地区乳母饮食与母乳中氨基酸组成的相关性
摘要
本研究描述中国北方鄉鎮母乳中氨基酸的组成和含量，乳母的饮食特点，并对二者的相关性进行分析。40名产后4-180天的乳母参加了此研究，她们的年龄为19-35岁。我们对乳母进行了24小时膳食回顾调查，并测量了母乳中蛋白质和氨基酸的含量。主要结果如下：（1）母乳中平均蛋白质含量为1.58 g/dL，奶中必需氨基酸（EAA）和非必需氨基酸（NEAA）之比为1:2。奶中含量最高的氨基酸为GLU（16.04%），PRO（10.18%），LEU（8.67%），含量最低的为MET（1.76%）和TRP（0.91%）。（2）乳母的膳食中，能量和蛋白质的摄入足量，维生素A、维生素B及维生素C的摄入不足，这与北方地区农村“坐月子”的饮食习惯相符。蛋白质的食物来源主要是谷类和蛋类，大豆和鱼的摄入较少。（3）饮食和母乳的氨基酸组成相似，兩者的氨基酸模式相关性高达0.989，说明饮食中的氨基酸组成是母乳中的基础。但是，母乳中大部分的氨基酸含量和饮食摄取的量没有显著相关性。
並列摘要
This study was designed to investigate the amino acids composition of lactating mothers' milk and their confinement diet in a town in Northern China, as well as to assess the relation of amino acids content in human milk and diet. Forty lactating mothers age 19 to 35 years participated in the study. They were 4 to 180 days postpartum. A 24-hour dietary recall was done and amino acids content of maternal milk was analyzed. The main findings are as follows: (1) The protein content of human milk is 1.58 g/dL and the ratio of EAA to NEAA is about 1:2. The most abundant amino acids in human milk are GLU (16.0%), PRO (10.2%), LEU (8.67%) and the lowest two are MET (1.76%) and TRP (0.91%). (2) The diet contains enough energy and protein, but lacks vitamins A, B and C, indicating that it is a characteristic confinement diet. Grain and eggs are the main source of protein, and soy and fish were consumed less frequently. (3) Amino acids composition in diet and milk are similar; and the correlation of the amino acids patterns between diet and milk is 0.989, demonstrating that the amino acid composition of diet is the foundation of that in human milk. However, almost no relation is found between the amino acids concentration in maternal diet and milk, suggesting that the amino acids content of the diet does not have a direct relation with that of human milk.
延伸閱讀
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