Moisture sorption isotherms of sorghum malt at 40 and 50°C (original) (raw)

The desorption and adsorption equilibrium moisture isotherms of sorghum malt at the temperatures of 40 and 50 1C, over the water activity range of 0.1-0.9, were determined using the static gravimetric method. A non-linear regression programme was used to fit five moisture sorption isotherm models [Modified Henderson, Modified Chung-Pfost, Modified Guggenheim-Anderson-de Boer (GAB), Modified Halsey and Modified Oswin] to the experimental data. The models were compared using the standard error of estimate, mean relative percentage deviation, fraction explained variation and residual plots.