Abstract: The effects of different drying methods on the chemical constituents of monoterpenoid glycosides and phenolic acids in Radix Paeoniae Alba were studied to provide a basis for the determination of suitable drying methods for Radix Paeoniae Alba. Simultaneous determination of four monoterpenoid glycosides in samples prepared by different drying methods by HPLC The content of chemical components in the class and two phenolic acids; principal component analysis was performed using SPSS software, and the principal component scores were used for comprehensive evaluation.
The results showed that the white peony obtained by different drying methods can meet the requirements of white peony content and water content in the 2015 edition of Chinese Pharmacopoeia. The highest total amount of monoterpene glycosides and phenolic acids was obtained by vacuum freeze-drying. 248%, hot air 60 °C drying followed by 6. 141% ; The main scores of monoterpene glycosides and phenolic acids in the white peony treated by different drying methods were: vacuum freeze drying > hot air 60 °C drying > microwave drying equipment > far infrared drying > drying > Hot air 40 °C Drying > Hot air 80 °C Drying > Drying > Hot air 100 °C Drying.
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