Determination, through Derivatization and GC-MS Analysis, of Omega-3 and Omega-6 Fatty Acids in Fish Oil Capsules Sold in Salvador, Bahia

The essential w-3 and w-6 fatty acids have important physiological functions, such as prevention of cardiovascular diseases and atherosclerosis, and are commercially sold as fish oil capsules. In the present work, a method previously described in the literature, based on the derivatization of polyunsaturated fatty acids and their gas chromatography-mass spectrometry (GC-MS) analysis in the form of methyl esters, was partially modified and optimized for determination of w-3 and w-6 fatty acids in fish oil capsules. In addition, the w-9 fatty acid oleic acid was also determined with the optimize...