SPME-GC-MS analysis of volatile compounds in Czech white wines from five grape varieties

29 samples of white wines, produced from five varieties of Vitis vinifera L. grown in South Moravia, were analysed by Solid Phase Micro-Extraction (SPME) in the vapour phase by using a CAR-PDMS fibre. With the direct extraction of wine samples by SPME, statistical evaluation resulted in clear-cut discrimination of two groups of varieties, 'Riesling' and 'Gewurztraminer' on the one hand, and 'Pinot gris', 'Sauvignon blanc' and 'Gruner Veltliner' on the other. The dominant terpenes found in the analysed wines were linalool and terpineol. The variety 'Riesling' had concentrations of 185.2 mu g/l and 127.8 mu g/l, respectively, and the variety 'Gewurztraminer' contained lower concentrations (linalool 103.2 +/- 29.8 mu g/l, terpineol 65.3 +/- 29.1 mu g/l, citronellol 42.4 +/- 11.5 mu g/l, geraniol 179.4 +/- 67.4 mu g/l, nerol < 26.19 mu g/l ( = LOD - limit of detection).