Free access
Issue
Analusis
Volume 26, Number 2, March 1998
Couplages CG/SM et CL/SM
Page(s) 88 - 92
Section Original articles
DOI http://dx.doi.org/10.1051/analusis:1998116
Analusis 26, 88-92 (1998)
DOI: 10.1051/analusis:1998116

Détection CPG/SM des biomarqueurs spécifiques de l'élevage des vins en barriques

N. Vivas1, G. Bourgeois2, Y. Glories3, M. Augustin3 and C. Vitry2

1  Tonnellerie Demptos, détaché à la Faculté d'OEnologie, Université Victor Segalen Bordeaux II, 351 cours de la libération, 33405 Talence, France
2  Centre d'Études Structurales et d'Analyse des Molécules Organiques, CNRS URA 35, Université Bordeaux I, 351 cours de la libération, 33405 Talence, France
3  Laboratoire de Chimie Appliquée, Faculté d'OEnologie, Université Victor Segalen Bordeaux II, France


Abstract
Proceeding with a similar way as previous works, we characterised the presence of lignins in wines. This natural polymer was chosen as biomarker. It's a remarkably stable in time and typical wood component. We used the thioacidolysis reaction with ethanethiol and boron trifluoroetherate as reagents, to obtain some characteristic phenylpropane units from the lignin polymer. Identification was performed by mass spectrometry coupled with gas chromatography (GPG/SM) of thioacidolysis products in trimethylsililated form. The aim of this study is the demonstration of wine aging in barrel before bottling.


Key words: Ancient wine / barrel aging / lignin / thioacidolysis.


© EDP Sciences, Wiley-VCH 1998