Equilibrium Moisture Properties of Winged Bean Seed

MOISTURE equilibrium data for desorption from winged bean seeds was obtained at 40, 50, 60, and 70C, and relative humidities ranging from 10 to 80%. A static gravimetric method was used. A non-linear least squares regression program was used to fit five desorption isotherm models developed by other researchers to the experimental data. The modified Halsey model gave the best fit of the experimental data. An 0.9% standard error of estimate of equilibrium moisture content was found when equilibrium relative humidity was taken as the independent variable while a 4.5% standard error of estimate of equilibrium relative humidity was found when equilibrium moisture content was considered to be the independent variable..