Possibilities of utilization of modern sample preparation methods for gas chromatographic analyses in beverage and namely brewing analytics. Part III. - solid-phase microextraction and stir bar sorptive extraction in fatty acids analysis in beer
2010
Horak, T.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav | Culik, J.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav | Jurkova, M.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav | Cejka, P.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav | Kellner, V.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav | Dvorak, J.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav | Haskova, D.,Vyzkumny Ustav Pivovarsky a Sladarsky, Prague (Czech Republic). Pivovarsky Ustav
Solid-phase microextraction (SPME) and stir bar sorptive extraction (SBSE) are modern and simple sample preparation procedures. This study is focused on utilization of these techniques for the determination of fatty acids in beer. When using SPME, analytes were thermally desorbed from the coated fiber in the hot injector of the gas chromatograph equipped with a fused silica capillary column ZBWAX and a flame ionisation detector. When using SBSE procedure, analytes were desorbed by solvent back extraction and then analysed by gas chromatography. Our results show that both SPME and SBSE can be used for the determination of fatty acids in beer.
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