Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1121, Issue 2, Pages 145-153Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2006.04.013
Keywords
beer; headspace analysis; solid-phase microextraction; volatile profile; aging; flavour
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A simple and sensitive method for the analysis of beer volatile compounds was optimised using headspace solid-phase microextraction (SPME) and gas chromatography with mass detection. Headspace SPME using a 75 mu m Carboxen-polydimethylsiloxane (CAR-PDMS) fiber provided effective sample enrichment and enabled extraction of a wide variety of compounds. The reproducibility depended on the compounds, with a mean value of 1.4% for alcohols, 3.3% for ethers, 6.7% for aldehydes, 3.4% for acids, 1.7% for aromatic compounds, 2.4% for esters, 7.4% for hydrocarbons, 1.8% for alicyclic compounds, and 3.4% for heterocyclic compounds. The optimised methodology can be used to compare volatile profile from different types of beers and eventually to study the evolution of a particular beer during aging. (c) 2006 Elsevier B.V. All rights reserved.
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