Antioxidant activities, sensory and anti-influenza activity of grape skin tea infusion.

Grape skin extracts from pinot noir and pinot gris exhibited significant in vitro antiviral (influenza virus) activity. Five tea infusions from grape skins (Vitis vinifera var. pinot noir and pinot gris) without any additives (control pinot noir and control pinot gris) or by adding variable amounts of green tea and hibiscus were investigated as a means to utilise wine wastes.