colored-fleshed potatoes of varieties were used as raw material for colored flour and fried snack production. The effects of thermal processes traditionally used in dried potato processing and in snack pellet manufacturing on anthocyanin profiles, total polyphenols and antioxidant properties of obtained half and ready products were studied. There was a significant influence of potato variety on the experimental flour and snack properties. Flours with the highest antioxidant activities were obtained from Salad Blue and Herbie 26 potatoes; However. the flour prepared from the Blue Congo exhibited a much higher total polyphenol and anthocyanin content. Snacks produced with coloured flour had 2-3 times higher antioxident activities, 40% higher contents of polyphenols, attractive colour and better expansion compared to control sample. The lowest losses of anthocyanins during snack processing were in snacks with flour from the purple-fleshed Blur congo and red-fleshed Herbie 26.