Red grapes are rich in phenolics, flavonoids, anthocyanins and resveratrol, all substances which havebeen suggested as having nutraceutical and health benefits. The berry skin and wine of grape cultivarVitis vinifera L. (cv. Aglianico), grown in Basilicata (Southern Italy) were examined to determinate thepresence of the above mentioned compounds as well as to establish the inorganic cation profile. HPLCanalysis coupled with LC–ESI/MS/MS detected high contents of total flavonols and anthocyanins in berryskin and wine. The wine made with the same grape used for berry skin assays showed a notable presenceof quercetin-3-O-glucoside (39.4% of total flavonols), and malvidin and petunidin derivatives (63.9% and10.8% of total anthocyanins, respectively). The strong antioxidant ROS-scavenging activity, determined byboth DPPH and FRAP assays, and the high resveratrol content confer high sensory characteristics resultedto be associated with positive nutraceutical properties of these grapes and wine. The level of cis-resveratrolwas lower than trans-resveratrol in both berry skin and wine reaching 44.1 mg/kg and 0.3 mg/l,respectively. The cation profile presents low levels of Ca, Cu, K, Fe, Zn and Cd compared to numerous,important red wines, such as Monastrell and Tempranillo.
|Titolo:||Nutraceutical properties and polyphenolic profile of berry skin and wine of Vitis vinifera L. (cv. Aglianico)|
|Data di pubblicazione:||2013|
|Appare nelle tipologie:||1.1 Articolo in rivista|