Original research articles

Study in aroma of sweet natural non Muscat wines 2nd part : quantitative analysis of volatil compounds taking part in aroma of sweet natural wines during ageing

Abstract

This study is dedicated to quantification, by gas chromatography combined with mass spectrometry, of some volatile compounds founded during ageing of sweet natural wines. Besides determination of the thresholds olfactory perception enable us knowing better the more active compound in sweet natural wines aroma.

The results enable to know better volatile compounds which are able to produce ageing aromas characteristic of sweet natural wines. These products are always rich in sugar and grown up in a more or less oxidising environment. Logically, many of the compounds identified in this work (derived furanic compounds and many others) are Iinked with chemical like Maillard reactions between sugars and amino-acids. Others compounds as a sotolon need oxidising phenomena to increase in the environment.

Comparatively, oldest Port wines have been analysed. The compounds measured in these Port wines also exist in French sweet natural wines of type Banyuls and Rivesaltes, keeped under oxidising environment. But the dillerences of concentrations in some compounds discriminate them from the Port wines.

Authors


Isabelle Cutzach

Affiliation : Chargée de recherches par le Groupement Interproducteurs Collioure-Banyuls, GICB, (66650 Banyuls/mer, France) à la Faculté d'OEnologie de Bordeaux, Université Victor Segalen Bordeaux II, 351, cours de la Libération, 33405 Talence Cedex (France)

oenogene@oenologie.u-bordeaux2.fr

Pascal Chatonnet

Affiliation : Laboratoire EXCELL, Parc Innolin, 10, rue du Golf, 33700 Mérignac (France)


R. Henry

Affiliation : Faculté d'OEnologie, Université Victor Segalen Bordeaux 2, 351, cours de la Libération, 33405 Talence cedex (France)


Monique Pons

Affiliation : Institut d'OEnologie, Université de Bordeaux II, 351, cours de la Libération, 33405 Talence (France)


Denis Dubourdieu

Affiliation : Faculté d’oenologie, UMR 1219 OEnologie, Université de Bordeaux, ISVV, 210, chemin de Leysotte, CS 50008, 33882 Villenave d'Ornon, France

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