Chemical composition of red wines made from hybrid grape and common grape ( Vitis vinifera L. ) cultivars

The total wine production, totalling an equivalent of 30 billion 750 mL bottles in 2009, only verifies the fact that global demand is increasing and that the polyphenols present in wines are accounting for a significant proportion of the daily antioxidant intake of the general population. Novel cold tolerant hybrid grape varieties also make it possible to produce wines in regions where winter temperatures fall below -30 degrees Celsius and the yearly sum of active temperatures does not exceed 1,750 degrees Celsius. Therefore, the aim of this work was to determine to which extent wines produced from hybrid grapes differ from wines vinified from common grapes regarding their phenolic, saccharidic, and acidic spectra and elemental composition. Results demonstrate that although the polyphenolic spectra of red wines produced from hybrid grapes are generally similar to those of traditional wines, they show a wider range of anthocyanins, a balanced phenolic acid profile, qualitative differences in saccharide composition, and a very low heavy metal content.