The effective moisture diffusivities are typically
determined by plotting experimental drying data in
terms of ln(MR) versus time.
The Microsoft Excel 2007 was used in the
numerical calculations. The parameters were
evaluated by the non-linear least squares method
of Marquardt-Levenberg procedure. Reduced chisquare
(χ2), root mean square error (RMSE) and the
coefficient of determination (R2) (Vega-Gálvez et al.,
2010) were used as the primary criteria to select the
best equation to account for variation in the drying
curves of the dried samples which are described as
follows: