Abstract: Aiming at the problems of low efficiency, high energy consumption and poor quality of pecan nuts, the effects of microwave power and loading on the microwave drying characteristics of pecan nuts were studied by single factor experiment. According to the variation law of pecan nuts in microwave drying equipment, the variation of dry moisture content and water loss rate of pecan nuts under different microwave power and loading time were discussed, and the microwave drying kinetics model of pecan nuts was established.
The experimental results show that compared with the loading, microwave power has a great influence on the drying rate of pecan nuts; the microwave drying process of pecan nuts is divided into accelerated drying stage and slowing drying stage. Through analysis, the kinetic model of pecan nut microwave drying satisfies the Page equation. According to the drying experiment data, the dry model is solved by Matlab software, and the model coefficient is above 0.99.
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