Papayas are a fragile fruit; characteristic that limits large-scale exportation from the producing centers to countries in temperate regions. Loss of fruit ranges from 10% to 40% and could be reduced if papayas were dried. The process of osmotic dehydration followed by air-drying was studied and modeled for papaya preservation, so it could be optimized. The developed model has been validated wi...

Received: 15/11/2013 Revised: 13/12/2013 Accepted: 16/12/2013 Abstract Osmotic dehydration is a process of water removal by immersion of water containing cellular solids in a concentrated aqueous solution of sugar/ salt. This results in intermediate moisture product with lower water activity. At low water activity, most of the chemical reactions which deteriorate the food as well as the growth ...

Osmotic dehydration is a process in which partial water is removed by immersion of water containing cellular solid in a concentrated aqueous solution of high osmotic media for a specified time and temperature. It has potential advantages of less heat damage, good blanching effect, less enzymatic browning, better retention of flavour and energy saving because no phase change occurs. Osmotic dehy...

Pretreatments and drying are commonly used before tomatoes to inactivate enzymes, improve the process, quality of dried tomato powders. In this review, effects different pretreatments (osmotic solutions), dehydration methods packaging materials on attributes powder were summarized. They include osmotic agent solution (potassium metabisulphite, calcium chloride, sodium ascorbic acid, citric chlo...