Bioactive profiling of polyphenolics and oenological properties of red wines from Italian grapes (Vitis vinifera L.) cultivated in a selected subtropical region

Abstract

The polyphenolic and oenological properties were evaluated in red wines from Italian varieties Ancellotta, Rebo, Nebbiolo, Barbera and Teroldego cultivated in a selected subtropical region. Ancellotta wines showed the highest concentrations of phenolics, particularly flavanols, flavonols and anthocyanins 3-O-glycosides. Grape variety rather than vintage had stronger influence on polyphenols. Wines from vintage 2012 showed the highest antioxidant activity and highest concentrations of polyphenols, mainly Ancellotta and Teroldego wines. The wines showed similar phenolic profile regarding the presence of phenolics, whereas their concentrations varied greatly among varieties and vintages. The results demonstrated good adaptability of these varieties and their potential to produce quality wines.