Fresh quinces were stored in a refrigerator at about 6 1C. Before drying, the quinces were cleaned and sliced manually to a
thickness of 12 mm. The initial net weight of the quince slices was about 700 g and the initial moisture content (M0) was
measured to be 81.04% in wet basis (w.b.) or 4.27 g water / g dry matter in dry basis(d.b.) and was determined by the oven - drying method, for the fresh and for the final dehydrated product sat 70 1C for 24h [6] with repetition in order to assure accurate moisture content average values.