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LA is an 18 carbon chain fatty acid with two double bonds in the middle and is missing four hydrogen atoms, all on one side. The first double bond occurs after the 6th carbon atom. calories. Because of this, LA is sometimes referred to as calories. the W6 EFA. Because of the four missing hydrogen atoms, LA is even more bent than Oleic Acid, giving it a melting temperature of 23 degrees F (-5C). LA is fairly unstable, reacting with light and oxygen. This is Alpha Linolenic calories. Acid (LNA). It is an 18 carbon fatty acid with three double bonds at the 3, 6, and 9 carbon positions. LNA is missing 6 hydrogen atoms, again all from one side. Because of the first double bond occurring at the 3rd carbon atom, LNA is sometimes referred to as the W3 EFA. It is sometimes referred to as a super unsaturated fatty acid (SUFA), even though it is also poly-unsaturated.
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