Frying was performed in thermostatically temperature controlled fryer (Black and Decker, Type 01) containing 1.5 L refined sunflower oil (Nina, Iran). Three samples were placed in a wire basket and then submerged for 0, 1, 2, 3 and 4 min at 150, 170 and 190 C. Then, samples were allowed to drain for 30 s before being blotted gently with dry tissue paper to remove excess oil on the surface