Soha Sadeghian - B.S. student of of Food Science and Technology, Faculty of Agriculture, University of Tabriz، Department of Food Science and Technology, University of Tabriz
Romina Baharvand - B.S. student of of Food Science and Technology, Faculty of Agriculture, University of Tabriz، Department of Food Science and Technology, University of Tabriz
Akram Pezeshki - Assitant Professor of Food Science and Technology, Faculty of Agriculture, University of Tabriz

Grapes contain high amount of phenolic compounds,mainly flavonoids that can act as antioxidant agents. There are anthocyanins in the skin and procyanidins in the seeds of grape extracts. Isolated anthocyanins are highly instable and very susceptible to degradation in environment condition .Encapsulation of nutraceuticals in nano carriers is a useful means of protecting colorant agents from degradation and preventing premature color development. The use of nano-carrier for phenolic compounds such asantioxidant agents in red grapes have multiple benefits such as controlled release in foods and in the body in a certain time and place.The aim of this study was to assess the phenolic compounds content and antioxidant activity of red grape pomaces with a view to using its potential as a source of natural antioxidants.

Anthocyanins, Phenolic compounds, Antioxidant activity, Stability, Encapsulation