Abstract: In order to study the effects of different drying methods on the drying characteristics and quality of jujube tablets, semi-dry jujube was used as experimental material. After slicing, solar shaving, vacuum freeze drying and microwave drying equipment experiments were carried out on different thickness jujube tablets. The sensory evaluation and nutrient composition analysis of the dried jujube tablets were carried out.
The comprehensive sensory evaluation and drying characteristics analysis showed that the best experimental conditions for solar drying were solar wall collector type device, the thickness of jujube piece was 4 mm; the best experimental condition for vacuum freeze drying was shelf temperature 40 °C, jujube piece The thickness is 6 mm; the optimal drying conditions for microwave drying are microwave power 70 W and jujube thickness 6 mm. The results of nutrient test showed that the Vc content and total sugar content of the jujube tablets obtained by vacuum freeze-drying were the highest. The results of the study can provide guidance for the actual drying of the jujube tablets.
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