2.2. Pre-treatments
Blanched samples were prepared by heating raw slices in 5 lof hot water at 85 1C for 3.5 min (potato-to-water ratio 0.005 w/w)—control—. Blanched slices were blotted with paper towel to eliminate loose material adhering to the surface prior to drying or frying. Predried samples were prepared by placing some blotted blanched slices on a tray, arranged in one single layer and dried in a convection oven (Memmert, mod ULM 500) at a dry bulb temperature of 6071 1C and an air velocity of 170.1 m/s (blanched–dried slices). The mass loss was monitored continuously until the slices reached a finalmoisture of 6071 g/100 g (wet basis).