Optimal design of experiments and measurements of the water sorption process of wheat grains using a modified Peleg model

Two experiments were carried out, an initial experiment to get rough parameter values and a second experiment, which was designed optimally by using the Cramer-Rao lower bond method. The percentage parameter errors for the four parameters of the modified model were reduced from 669%, 24%, 12%, and 2.4% to 38%, 5.4%, 4.5% and 1.9% respectively. The presented results demonstrate the advantage of optimal design of experiments.