Shandong Science ›› 2023, Vol. 36 ›› Issue (4): 10-17.doi: 10.3976/j.issn.1002-4026.2023.04.002

• Traditional Chinese Medicine and Natural Active Products • Previous Articles     Next Articles

Effect of different slicing methods on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma

WANG Yuchen1,2(), CUI Li1, ZHAO Hengqiang1, LU Heng1, LIU Wei1, WANG Xiao1,*()   

  1. 1. Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
    2. Shandong University of Traditional Chinese Medicine, Jinan 250355, China
  • Received:2022-09-15 Online:2023-08-20 Published:2023-08-03

Abstract:

To explore the effect of different slicing methods on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma, the hot air drying at 40 ℃ and traditional air drying at room temperature were performed and the results were compared. Furthermore, the effect of different slicing methods (circular cutting and 45° oblique cutting) and slice thickness (2, 4, and 6 mm) on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma were investigated. Several water-loss kinetic models were adopted to quantitatively describe the drying characteristics. Results showed that the drying was mainly a falling rate period. The drying rate decreased with the decrease of the moisture content of the dry basis. Furthermore, the larger the slice thickness, the lower the drying rate and the longer the drying time. According to statistical parameters, the Page model predicted and described the drying process more accurately than others. The predicted value of the model was in good agreement with the experimental value, and it could well describe the drying process for different slicing methods. The research provides a guidance for further investigating Salviae Miltiorrhizae Radix Et Rhizoma.

Key words: Salviae Miltiorrhizae Radix Et Rhizoma, slicing methods, drying characteristics, mathematical model

CLC Number: 

  • R283.6