Fatty Acids
脂肪酸
Fatty acids are made up of a long-chain carbon skeleton that has a carboxylic acid functional group. When three fatty acid molecules attach themselves to glycerol, the resulting molecule is an example of a lipid.
脂肪酸由一个长链碳骨架组成，其末端有一个羧酸基团。当三个脂肪酸分子附着在甘油上时，形成的分子就是一个脂类的例子。
The two fatty acids illustrated below each have a 17-carbon backbone plus the carbon in the carboxylic acid group. Stearic acid is said to be a saturated fatty acid because it has all the hydrogens that can bond to the carbon chain. Linoleic acid is an unsaturated fatty acid, having two double bonds between carbons and therefore has four fewer hydrogens in its structure.
下面所示的两种脂肪酸各自都有一个17个碳的骨架加上羧酸基团中的一个碳。硬脂酸被称为饱和脂肪酸，因为它碳链上的所有氢都已结合。亚油酸是一种不饱和脂肪酸，因为它有两个碳碳双键，因此其结构中少了四个氢原子。
Biochemical concepts
Chemistry concepts
Reference
Enger & Ross
索引 生物化学概念 化学概念 参考 enger & ross
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