RESUMEN
Objective To set up the quality standard of TCM preparation Qingfei pill. Methods TLC methods were used to the qualitative identification of Fructus Termininaliae Immaturus and Radix Sophorae Subprostratae in the preparation. The content of Gardenoside, the effective component of Fructus Gardeniae, was determined by HPLC method, using Agilent Eclipse XDB-C18 (150 mm×4.6 mm, 5 μm) and acetonitrile-water (10∶90) as mobile phase with flow rate at 1.0 mL/min. The column temperature was room temperature, and the detection wavelength was 238 nm. Results The TLC methods for Fructus Termininaliae Immaturus and Radix Sophorae Subprostratae identifications were simple and rapid, and showed good repetitiveness. Gardenoside presented a good linear relationship within the range of 0.238-3.808 μg, and the average recovery rate was 97.24%, RSD was 1.60% (n=6). Conclusion These methods showed strong specificity and good repetitiveness, and can be used to control the quality of the product effectively.