In gas chromatography (GC), fatty acid detection is usually facilitated by converting these compounds into their methyl ester derivatives (FAMEs) using various esterification methods. Conventionally, there are various methods to prepare FAMEs: base- or acid-catalyzed esterification; methylation with diazomethane in ethereal solution, boron trichloride or boron trifluoride.In addition, other methods, such as methylation with tetramethylammonium hydroxide or trimethylsulfoniumhydroxide, derivatization with tert-butyldimethylsilyl or dimethyloxazolidine, and also cyanomethyl derivatization are also used.To separate obtained FAMEs by GC, polar polymer-type capillary columns, such as cyanopropyl polysiloxane are frequently used. The use of extremely polar column also allows a good separation of FAME cis-and trans-isomers present in dairy products.The aim of current research was to establish and validate a simple and accurate procedure for the analysis of the composition of the FAs in bovine colostrum. The AOAC 969.33 method, which is widely used for FAME detection in oils was chosen as a base of our method. The method included fat extraction and derivatization, during which, the fatty acids went through esterification with the acidic catalyst boron trifluoride. Subsequently, the suitability of
polar polyethylene glycol column was tested for the separation of FAMEs by GC-FID from bovine colostrum extract.