Breckenridge W C, Kuksis A
J Lipid Res. 1967 Sep;8(5):473-8.
The triglyceride compositions of the milk fats of man, dog, guinea pig, cow, sheep, goat, and horse were compared by gas-liquid chromatography of the intact triglycerides and of the butyl esters of the component fatty acids. The milk fats of man, dog, and guinea pig, which were largely made up of long-chain fatty acids, showed a common pattern with major contributions made by the glycerides with 48-54 acyl carbon atoms. The milk fats of cow, sheep, and goat, which were rich in short-chain acids, showed significant proportions of triglycerides with 28-54 acyl carbon atoms. Horse milk, which contains large amounts of medium-chain fatty acids, gave a characteristic triglyceride pattern in the 26-54 carbon atoms range. The experimentally determined distributions of the molecular weights of the triglycerides of all milk fats deviated significantly from the distributions predicted by random association of the fatty acids from a single pool. The data suggest that in all species the milk fat may be formed by a partial resynthesis of preformed glycerides.
通过对完整甘油三酯及其组分脂肪酸的丁酯进行气液色谱分析，比较了人、狗、豚鼠、牛、绵羊、山羊和马的乳脂肪中的甘油三酯组成。人、狗和豚鼠的乳脂肪主要由长链脂肪酸组成，呈现出一种共同模式，其中含有48 - 54个酰基碳原子的甘油酯起主要作用。富含短链酸的牛、绵羊和山羊的乳脂肪中，含有28 - 54个酰基碳原子的甘油三酯比例显著。含有大量中链脂肪酸的马奶，在26 - 54个碳原子范围内呈现出独特的甘油三酯模式。所有乳脂肪中甘油三酯分子量的实验测定分布与单个脂肪酸池随机结合预测的分布有显著偏差。数据表明，在所有物种中，乳脂肪可能是由预先形成的甘油酯部分重新合成形成的。
