Tannins on five major Greek red grape varieties

Tannins are located in skins and seeds and are responsible for important sensory and quality attributes of red grapes and wines, such as astringency, bitterness and colour stability. However, little is known regarding Greek Vitis vinifera varieties. A new research evaluated the grape phenolic content on five major red Greek varieties (Agiorgitiko, Xinomavro, Mandilaria, Kotsifali and Mavrotragano) and presented data that may contribute to the development of suitable winemaking techniques for these varieties. The research is entitled '' Tannin Content and Antioxidant Capacity of Five Greek Red Grape Varieties '' (M. Kyraleou, E. Gkanidi, S. Koundouras and S. Kallithraka) and has been published in Vitis 58 (2019).

The results indicated that Greek varieties are particularly rich in tannins and anthocyanins. The key points are described below: