Internal and bulk porosities decreased as pea particles dried with both open sun and solar-assisted spouted bed (Table 2). When two drying methods were compared, it was seen that decrease in internal and bulk porosity was less for solar-assisted spouted bed drying. This may be again due to higher drying rate and temperature for solar-assisted spouted bed. The difference in porosities between the open sun and solar-assisted spouted bed dried pea may be explained by the shrinkage of the samples during drying. That is, shrinkage was more for open sun dried pea resulting lower porosity values.