DEVELOPMENT OF AN ANALYTICAL METHOD FOR T HE DETECTION OF SPECIFIC BIOMARKERS OF WINES AGING IN BARRELS

Proceeding with a similar way as previous works, we characterised the presence of lignins in wines. This natural polymer was chosen as bioma rker. It's a remarkably stable in time and typical wood component. We used the thioacidolysis reaction with ethanethiol and boron trifluoroe therate as reagents, to obtain some characteristic phenylpropane units from the lignin polymer. Identification was performed bq mass spectro metry coupled with gas chromatography (GPG/SM) of thioacidolysis produ cts in trimethylsililated form. The aim of this study is the demonstra tion of wine aging in barrel before bottling.