Polyphenolic compounds with anthocyanins characteristic for coloured flesh potatoes are known fortheir antioxidant properties which could improve the quality of ready products as potato chips. Fivepurple potato varieties (Blaue Elise, Blaue St. Galler, Blue Congo, Valfi and Vitelotte) and four red fleshpotato varieties (Highland Burgundy Red, Herbie 26, Rosalinde, Rote Emma) were stored for nine monthsand analysed for the polyphenols, anthocyanins, reducing sugars and antioxidant activity with twodifferent methods viz. ABTS and DPPH. After additionally in prepared potato chips oil content, textureand colour parameters were evaluated.