Drying of bambara beans was studied at 40oC at every 30 minutes in a Laboratory oven. Effective moisture diffusivity ranges between 5.886 x 10-10 m2/s – 4.354 x 10-10 m2/s respectively. The statistical criteria used in evaluation of the model were maximum coefficient of determination R2 and minimum root mean square error [RMSE]. Determination for goodness of fit statistics for drying of the beans was carried out. Midilli model was used to predict the drying curve. The Midili model was found to produce accurate predictions for all the four varieties of bambara beans and the model was shown to be an excellent model for predicting drying behavior of TVSU-47 and the R2 value was 0.9971 and the value of root mean square error was 0.0149 respectively.

Midilli model was used to estimate the moisture ratio of four varieties of Sword beans. The experiment was carried out using distilled water at temperature of 530C for 100 minutes. The standard model of water absorption was fitted into the experimental data. Coefficient of determination [R2 ] and root mean square error were used to evaluate the model. The Midilli model was chosen based on maximum value of Coefficient of determination and minimum value of root mean square error. The result showed that Midilli model is the most appropriate for TCG-4 with R2 value of 0.9924 and RMSE value of 0.1758 to estimate moisture ratio changes versus time in soaking. The moisture ratio against soaking time was plotted in each case using Midilli equation. The plotted curves of each variety of bean indicated that moisture ratio decreases with increasing in time. The effective moisture diffusivity coefficient of four varieties of varieties of Sword beans increased.