Abstract:

In this paper, effects of microwave power, vacuum on the moisture change of tea was got with the study of microwave vacuum drying characteristic. According to tea moisture, the relationship of the drying time and the wet basis moisture content are analyzed and studied under the different microwave power and vacuum. The three drying models (single diffusion model, page model and exponential model) are verified set up by the experimental data, the experimental data are fit equation found page model. The results showed that microwave vacuum drying of tea to meet the Page equation dynamic model, and it will provide the theoretical basis and scientific guidance for the green tea processing.