ABSTRACT: Objective: To study the optimum technological conditions of Angelica sinensis microwave drying equipment. Methods: Single factor test and L9 (34) orthogonal test were used to screen the factors. The total number of colonies, ferulic acid content and final water content of Angelica sinensis were evaluated comprehensively.
RESULTS: The optimum microwave drying and sterilization parameters of Angelica sinensis were water content 15%, microwave power 12 kw, microwave speed 1030 r.s-1 and sample loading 10 kg.m-2. CONCLUSION: By optimizing the microwave drying sterilization process of Angelica sinensis, the loss of ferulic acid, the effective ingredient of Angelica sinensis, can be reduced, and the purpose of effective sterilization can be achieved. It can be used to improve the quality of products and provide scientific basis for the processing and production of Angelica sinensis in Gansu and the whole country.
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