CONICET | Buscador de Institutos y Recursos Humanos

The kinetics associated with rehydrating dehydrated mangoes was studied at threetemperatures: 25°, 40°, and 60°C. Besides, we studied how rehydration was affected by pretreating the fruit with osmodehydration in either sucrose or glucose before it wasthermally dehydrated. We show that rehydration can be interpreted by Fickian diffusion and that the effective water diffusion coefficient is larger at 40°C than at either 25° or 60°C. Consequently, during rehydration of untreated samples at 40°C, the weight gain, water gain, and loss of solids attain optimal values. We found that the rehydration kinetics of mango was not affected by osmodehydration pretreatments in sucrose.However, pretreatment in glucose significantly improved rehydration; for example, the effective diffusion coefficients of the glucose-treated samples were about twice as large as those of the untreated samples.