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美国食品和药物管理局近期宣布,美国将在三年内禁止在食品中添加人造反式脂肪。消息传出,引起全球瞩目。那么,什么是“反式脂肪”?为什么要禁止呢?对于这个问题,似乎应该从有机化学说起。人体的脂肪组织中的脂肪一般是由甘油与脂肪酸结合而成。甘油有3个羟基,所以绝大部分是结合了三个脂肪酸,也因此被称为甘油三酯。平素体检,检测甘油三酯高不高,就是看脂肪含量超不超标。这些脂肪酸是碳链较长者,
The U.S. Food and Drug Administration recently announced that the United States will ban the addition of artificial trans fats to foods for three years. News, attracted global attention. So, what is “trans fat”? Why ban it? For this issue, it seems that we should start from organic chemistry. Fat in the human body’s fat tissue is generally made of glycerol and fatty acids. Glycerol has three hydroxyl groups, so the vast majority is combined with three fatty acids, and is therefore known as triglycerides. Usually physical examination, testing triglycerides is not high, is to see the fat content is not exceeded. These fatty acids are those with longer carbon chains,