Solid Phase Micro Extraction-Gas Chromatography for the Analysis of Oxidation Products from Fermentation of Malt Beverages

Author(s): A. Y. El-Naggar

In this study, a solid-phase micro extraction (SPME) technique followed by gas chromatography connected with flame ionization detector GC-FID was used for qualitative and quantitative analysis of the produced alcohols in malt beverages. Eight different sorts of malt beverages were collected from the local markets of western province of Saudi Arabia. The studied samples were analyzed via capillary gas chromatography for their alcohol content after exposing to air and in presence of yeast. It has been found that minor concentration of ethanol content was found after exposing malt beverages to air. Considerable variability in the alcoholic strength was found in presence of yeast due to fermentation, overall, the range of concentrations was 0.4621 Vol. % in Budwisers to 3.416 Vol. % in Hillsgurg.

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