The different types of osmotic agents such as glucose, sorbitol, sucrose and salts are used according to the final products. However combination of different solutes can be used. Water loss from vegetables and fruits took place in first two hours and maximum sugar gain within 30 minutes. Osmotic dehydration is used with other drying methods such as freezing and deep fat frying to make available better quality final product. Temperature and concentration of osmotic syrups increased the rate of water loss during OD. However higher temperature has the significant effect on the structure of tissues and cause flavor deterioration and enzymatic browning at temperature above 45°C.