The temperature was the most important effect affecting solids gain, followed by the immersion time. These effects positively influenced the solids gain for the osmotic process of papaya in sucrose solutions. It is important to emphasize the negative effect of the concentration in solids gain for sucrose. According to Heng, Guilbert, and Cuq (1990), it should be mentioned that, in this case, the sugar gain is less important. Generally speaking it appears that little sugar is obtained when the water outflow is fast and significant. This occurs with a higher temperature, higher concentration and some agitation. Acceleration of water loss without modification of solids gain, when temperature or dehydration solution concentration is increased, is observed by many authors (Bongirwar & Sreenivasan, 1977; Hawkes & Flink, 1978; Islam & Flink, 1982). This effect is generally attributed to the influence of natural tissue membranes as well as to the diffuse properties of water and solutes as a function of their respective molar mass. Low values of solids gain (