SUMMARY
The main goal of the present study was to isolate DNA both experimental and commercial wines in order to differentiate some Romanian grapevine cultivars (Tamâioasa Românesca, Galbena de Odobesti, Feteasca Neagra and Busuioaca de Bohotin) by PCR using wine as a sample. Extracted residual grape DNA quality and specificity were verified using co-dominant simple sequence repeat (SSR) markers (VVS2, VVMD27, VVMD5 and VVMD7). The results obtained in this research shows that even 18 months after wine fermentation could be detected residual DNA that can be suitable for DNA fingerprinting. The 12-month-old experimental wine samples were more amplified than the 18-month-old ones. Among the microsatellite tested, VVS2 and VVMD7 gave satisfactory results. The VVS2 marker, which generated the shortest PCR amplicons (119-138 bp), amplified all of the cultivars analyzed in the wines samples. In case of commercial wines authentication of grape material by PCR using wine as a biological material was unsuccessfully due to insufficient amount of residual DNA in samples analyzed.