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Novel multi-gas chromatography-olfactometry device and software for the identification of odour-active compounds.

Berdagué JL, Tournayre P, Cambou S

INRA, UR370 QuaPA, Equipe Typicité Aromatique et Authentification, F-63122 Saint Genès Champanelle, France. berdague@clermont.inra.fr

The aim of this work was to devise a novel fully computerised chromatography-olfactometry system where eight sniffers detect volatile compounds obtained from a single chromatographic separation. The technical options taken to implement this system are described in detail. The new methods and software developed and applied to analyse data obtained by gas chromatography-olfactometry and mass spectrometry (GC-O/MS) are presented. We found that 46 odorous zones could be detected by a panel of eight sniffers during the 35min of the analysis of the volatile compounds extracted from a cheese by purge-and-trap. Synchronisation of olfactometry and mass spectrometry data enabled us to propose 44 structures to account for 44 out of these 46 odorous zones.

Published 12 March 2007 in J Chromatogr A, 1146(1): 85-92.
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