Sorption isotherms and thermodynamic properties of the dry silage of red tilapia viscera ( spp.) obtained in a direct solar dryer.

The sorption isotherms, thermodynamic properties and calculation for confirming the isokinetic theory of dry chemical silage of red tilapia viscera ( spp.) obtained in a direct passive solar dryer were determined. Sorption isotherms were carried out at 15, 25, 35 and 45 °C using a static gravimetric method.