The similarity of the fat fraction in infant formulas rich in either bovine milk fat (MF) or vegetable oil (VO) to breast milk was evaluated by analyzing their lipid composition. Milk fat-rich formulas were highly similar (average similarity index 0.68) to breast milk compared to the VO-rich formulas (average similarity index 0.56). The highest difference in the indices was found in the contents of cholesterol (0.66 vs 0.28 in MF- and VO-rich formulas, respectively, on average) and polar lipids (0.84 vs 0.53), the positional distribution of fatty acids in the sn-2 position of triacylglycerols (0.53 vs 0.28), and fatty acid composition (0.72 vs 0.54). The VO-based formulas were superior in similarity in n – 6 PUFA. Thus, the addition of bovine MF fractions is an effective way to increase the similarity between the lipid composition of infant formulas and human milk.

中文翻译：

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母乳和婴儿配方奶粉之间脂肪比例的相似性指数

通过分析脂肪成分，评估富含牛乳脂肪 (MF) 或植物油 (VO) 的婴儿配方食品中脂肪部分与母乳的相似性。与富含 VO 的配方（平均相似指数 0.56）相比，富含乳脂的配方与母乳高度相似（平均相似指数 0.68）。胆固醇含量（在富含 MF 和 VO 的配方中平均分别为 0.66 对 0.28）和极性脂质（0.84 对 0.53）的含量，即脂肪酸在sn - 2 位甘油三酯（0.53 对 0.28）和脂肪酸组成（0.72 对 0.54）。基于 VO 的公式在n中的相似度更高– 6 多不饱和脂肪酸。因此，添加牛 MF 组分是增加婴儿配方食品的脂质成分与人乳之间相似性的有效方法。