Effect of irrigation regime on anthocyanin content and antioxidant activity of Vitis vinifera L.cv. Syrah grapes under semiarid conditions

摘要

BACKGROUND: Irrigation management is a powerful technique to control grape and wine colour. However, water deficit effects on anthocyanins are often contrasting, depending on the severity of water restriction. In addition, the effect of irrigation on the antiradical capacity of grapes has not been extensively studied. In this work the effect of water availability on anthocyanin profile and content as well as the antioxidant activity of Syrah grapes was investigated in an irrigation trial under semiarid climate conditions.