Absrtact: The effects of microwave drying equipment, hot air drying and combined hot air-microwave drying on the drying characteristics and quality of Toona sinensis buds were studied. The results showed that the comprehensive evaluation values of the dried products obtained by hot air drying at 60 C and microwave drying at 550 W were 0.890 and 0.884, respectively.
The optimum drying conditions of hot air-microwave combined drying were that the dry base moisture content was 0.67 kg/kg from 60 C hot air drying to the conversion point in the early stage and 330 W power drying in the later stage. Under these conditions, the comprehensive evaluation value of dry products obtained by combined drying was 0.972. The results showed that hot air-microwave combined drying could maintain the quality of Toona sinensis buds.
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