The influence of osmotic dehydration which has much paid attention on the solute kinetics or water swap inside and outside of food tissues , the application of vacuum pulse during osmotic treatments and special sound effects on impregnation time. The diffusion of water is effected to natural substances such as acids, vitamins, minerals, colorants and saccharides. But this flow is quantitatively negligible. Osmotic dehydration which improves the sensorial and nutritional properties, preserve and improve the organoleptic properties of foods. It is efficient in room temperature. In food processing industry, osmotic dehydration has become more popular.