A survey of vitamin A and D contents of fortified fluid milk in Ontario
A survey of vitamin A and D contents of fortified fluid milk in Ontario
复制标题
DOI：
10.3168/jds.s0022-0302(00)74986-1
复制
发表时间：
2000-06-01
影响因子：
3.5
通讯作者：
Szijarto, L
中科院分区：
文献类型：
--
作者：
Faulkner, H;Hussein, A;Szijarto, L
高效液相色谱法测定的维生素A和D的浓度在液态奶进行了验证，并用于评估这些营养素的水平在安大略零售牛奶样品。分别检测了13份和15份强化牛奶样品的维生素A和D。牛奶中维生素A和D的重复性相对标准偏差值通常小于10%。回收率为87%~ 107%。维生素D结果表明，只有20%的脱脂牛奶、40%的2%脂肪牛奶和20%的全脂牛奶含有推荐水平的维生素A，而46%的脱脂牛奶和77%的2%脂肪牛奶含有所需水平的维生素A。结果表明，安大略零售牛奶中的维生素水平差异很大。
High performance liquid chromatographic methods for measuring the concentration of vitamins A and D in fluid milk were validated and used to assess the level of these nutrients in Ontario retail milk samples. Thirteen and fifteen fortified milk samples were tested for vitamins A and D, respectively. Repeatability relative standard deviation values for vitamins A and D in milk were generally less than 10%. Recoveries varied from 87 to 107%. Vitamin D results indicated that only 20% of skim, 40% of 2% fat milk, and 20% of whole milk contained the recommended levels, whereas 46% of skim, and 77% of 2% fat milk had the required levels of vitamin A. The results indicate that vitamin level varies widely in Ontario retail milk.