Pamblanco M, Portolés M, Paredes C, Ten A, Comín J
Departament de Bioquímica i Biologia Molecular, Facultats de Ciències, Universitat de València, Burjassot, Spain.
Am J Clin Nutr. 1989 Oct;50(4):778-81. doi: 10.1093/ajcn/50.4.778.
Free amino acids were quantitated in human milk collected during the first month postpartum from mothers of appropriate preterm (26-32 and 33-36 wk gestation) and term (small or appropriate-for-gestational-age) infants. Glutamic acid and taurine were the most abundant amino acids in all four groups at all stages of lactation. The ratio of essential to nonessential amino acids was higher in colostrum than in mature milk although the total amino acid level of mature milk was double that of the colostrum. Nonprotein amino acids amount to approximately 40% of the free-amino acid pool in colostrum. Differences in the content and changes in free-amino acid levels during lactation among the groups were observed.
对产后第一个月收集的母乳中的游离氨基酸进行了定量分析，这些母乳来自孕周适宜的早产（妊娠26 - 32周和33 - 36周）和足月儿（小于胎龄儿或适于胎龄儿）的母亲。在哺乳期的所有阶段，谷氨酸和牛磺酸是所有四组中含量最丰富的氨基酸。初乳中必需氨基酸与非必需氨基酸的比例高于成熟乳，尽管成熟乳的总氨基酸水平是初乳的两倍。非蛋白质氨基酸约占初乳中游离氨基酸池的40%。观察到各组之间在哺乳期游离氨基酸含量和水平变化上存在差异。
