Influence of microwave vacuum drying on the effective moisture diffusivity of seedless white grapes

In this study, the effects of microwave power, vacuum degree and load weight on moisture content seedless white grapes (Vitis vinifera L.) during drying were investigated. The result found that drying, effective diffusivity (Deff) ranged between 1.0232 × 10−9 4.6354 m2/s. Deff values increased with increase in power decrease weight, played a relatively minor role. kinetics ratio time established, process following Page model, as reflected by fitting model-predicted measured data. model was demonstrated to precisely describe predict variation drying.