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天然油脂有很多种,按照它们的结构,大致可以分为饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸三大类。多不饱和脂肪酸又分为两类,一个是ω-3系列,一个是ω-6系列,其中ω-3系列的代表物质是α-亚麻酸、DHA和EPA。α-亚麻酸简称LNA,属于ω-3系列(或n-3系列)脂肪酸,是人类每天都需要的一种营养素。α-亚麻酸对于人类的健康有着极其有益的作用。它以甘油酯的形式存在于深绿色植物中,是构成人体脑细胞和组织细胞的重要成分,但它在人体内不能自行合成、代谢,必须要依靠膳食来获得,它进入人体后,在酶(脱氢酶和碳链延长酶)的催化下,转化成EPA和DHA,这样才会被吸收。
There are many natural oils, according to their structure, can be divided into saturated fatty acids, monounsaturated fatty acids, polyunsaturated fatty acids three categories. Polyunsaturated fatty acids are divided into two categories, one is the ω-3 series, one is the ω-6 series, which omega-3 series representative material is α-linolenic acid, DHA and EPA. Alpha-linolenic acid, abbreviated as LNA, belongs to the omega-3 series (or n-3 series) fatty acids and is a nutrient required by human beings everyday. Alpha-linolenic acid has a very beneficial effect on human health. It is in the form of glycerides in dark green plants, is an important component of the human brain cells and tissue cells, but it can not be synthesized in the body, metabolism, we must rely on diet to get it into the human body, the enzyme (Dehydrogenase and carbon chain elongase) catalysis, into EPA and DHA, so that will be absorbed.