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| reproductive rights, function, nw, biotechnology, bbc, tax reform, nanotechnology, volatile fatty acid , eatfat, body fat, sunflower oil, low fat, coronary heart disease, 1594630054, american first novelists, weight loss surgery, weight management, | Omega-3 (or n-3) fatty acids have the first double bond at the third carbon atom along bands the fatty acid chain and bands are derived mainly from alpha-linolenic acid. See box on essential fatty bands acids. In addition to their proper name, fatty acids are often represented by a shortened numerical name based on the number of carbon atoms, the number of double bonds and the omega class to which they belong. E.g. linoleic acid is termed C18:2 n-6, indicating it has 18 carbon atoms, two double bonds and is a member of the n-6 or omega-6 family. Alpha linoleic acid is termed C18:3 n-3, indicating it has 18 carbon atoms, three double bonds and is a member of the n-3 or omega-3 family. Cis and trans fatty acids Unsaturated fatty acids can also be classified as "cis" (bent form) or "trans" (straight form) according to the structure of the molecule. |
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| Fatty acids Fatty acids vary in the length of their carbon atom chain (from 4 to 22) and the number of double bonds they contain. For example, butyric acid 1594630054 (C4:0), palmitic acid (C16:0) and arachidic acid (C20:0), contain respectively 1594630054 4, 16 or 20 carbon atoms in their chain. The vast majority of fatty acids, 1594630054 both in the diet and in the body, contain 16-18 carbon atoms (see annex for a list of the most common fatty acids). Fatty acids are classified according to the number of double bonds they possess. Saturated fats contain no double bond, monounsaturated fats contain one and polyunsaturated fats contain two or more. Omega-6 and omega-3 fatty acids Polyunsaturated fatty acids are further categorised into two families according to the position of the first double bond: Omega-6 (or n-6) fatty acids have the first double bond at the sixth carbon atom along the fatty acid chain and are derived mainly from linoleic acid. |
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