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  • Title: Optimisation of wort volatile analysis by headspace solid-phase microextraction in combination with gas chromatography and mass spectrometry.
    Author: De Schutter DP, Saison D, Delvaux F, Derdelinckx G, Rock JM, Neven H, Delvaux FR.
    Journal: J Chromatogr A; 2008 Feb 01; 1179(2):75-80. PubMed ID: 18096176.
    Abstract:
    The aim of this study was to create a simple, solventless technique without derivatisation in order to analyze a broad range of volatiles in beer wort. A method was developed using headspace solid-phase microextraction coupled with gas chromatography and mass spectrometry. The procedure was optimised by selection of the appropriate fibre and optimisation of extraction temperature, extraction time, and salting-out. The detection limits were well below the actual wort concentrations of the selected volatiles, ranging from 12 ng/l for linalool to 0.53 microg/l for furfural. Moreover, the procedure showed a good linearity and was applied to the analysis of wort samples taken from a wort boiling process in an industrial brewery.
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