Flax oil including triglyceride, fatty acid radicals which combined with the glycerin original multifunctional alcohol. The triglycerides with low volatility, it is difficult analysis GC-MS method. In fact, the need to transform the form of flaxseed oil methyl ester under ester exchange reaction of triglycerides in the oil with methanol, then analysis of the methyl ester and then work backwards to the original composition of fatty acids in the oil .
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