Riddet Centre, Massey University, Palmerston North, New Zealand.
Int J Food Sci Nutr. 2008 Nov-Dec;59(7-8):679-90. doi: 10.1080/09637480701705424.
The amino acid composition of goat milk formulations with varying protein and carbohydrate concentrations were determined. Proteins in goat milk infant formula, goat milk growing-up formula and goat whole milk powder were hydrolysed using multiple hydrolysis time intervals. A least-squares non-linear regression model was used to predict the free and protein bound amino acid concentrations. The amino acid composition of goat infant formula was compared with human milk reference values. There was good agreement between the multiple hydrolysis and single 24-h hydrolysis methods for approximately one-half of the amino acids. Tryptophan, aspartic acid, threonine, tyrosine, isoleucine, valine, serine and alanine contents were underestimated by 10.6, 5.6, 5.6, 4.7, 4.4, 3.7, 3.7 and 3.6%, respectively, by the single 24-h hydrolysis. The study provides accurate reference data on the amino acid composition of goat milk powders. Goat milk infant formula has amino acids in amounts similar to human milk reference values, when expressed on a per-energy basis.
测定了不同蛋白质和碳水化合物浓度的山羊奶配方的氨基酸组成。使用多种水解时间间隔水解山羊奶婴儿配方奶粉、山羊奶成长配方奶粉和全脂山羊奶粉中的蛋白质。使用最小二乘非线性回归模型预测游离氨基酸和蛋白质结合氨基酸的浓度。将山羊婴儿配方奶粉的氨基酸组成与母乳参考值进行比较。对于大约一半的氨基酸，多次水解和单次 24 小时水解方法之间具有良好的一致性。色氨酸、天冬氨酸、苏氨酸、酪氨酸、异亮氨酸、缬氨酸、丝氨酸和丙氨酸的含量分别低估了 10.6%、5.6%、5.6%、4.7%、4.4%、3.7%、3.7%和 3.6%，通过单次 24 小时水解。该研究提供了关于山羊奶粉氨基酸组成的准确参考数据。以每能量为基础表示时，山羊奶婴儿配方奶粉的氨基酸含量与母乳参考值相似。
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