Discrimination of wines grouped in clusters in accordance to the glutathione, ascorbic acid and carbon dioxide treatments. GSH of 0, 20 and 40 mg/l (clusters G0, G20 and G40), GSH of 20 and 40 mg/l plus 50 mg/l AA (clusters G20A and G40A). Sub-cluster colors: G0CO2 and G0 – light and dark blue, G20CO2 and G20 - light and dark green, G40CO2 and G40 – light and dark cyan, G20ACO20 and G20A – light and dark orange, G40ACO2 and G40A– light and dark magenta.