Telis, V. R. N. [UNESP]Gabas, A. L.Menegalli, F. C.Telis-Romero, J. [UNESP]2014-05-272014-05-272000-01-14Thermochimica Acta, v. 343, n. 1-2, p. 49-56, 2000.0040-6031http://hdl.handle.net/11449/66088Moisture equilibrium data of persimmon skin and pulp were determined using the static gravimetric method. Adsorption and desorption isotherms were obtained in the range of 20-70°C, to water activities (a w) from 0.02 to 0.85. The application of the GAB model to the experimental results, using direct nonlinear regression analysis, provided a good agreement between experimental and calculated values. The net isosteric heat of sorption was estimated from equilibrium sorption data, using the Clausius-Clapeyron equation. Isosteric heats of sorption were found to increase with increasing temperature and could be well adjusted by an exponential relationship. The enthalpy-entropy compensation theory was applied to sorption isotherms and plots of ΔH versus ΔS for skin and pulp provided the isokinetic temperatures, indicating an enthalpy controlled sorption process. © 2000 Elsevier Science B.V.49-56engIsothermsMoisture contentPersimmonThermodynamic propertiesArtigo10.1016/S0040-6031(99)00379-2WOS:000084693100008Acesso restrito2-s2.0-000213837094570810881081680000-0002-2553-4629