Study on Quality Standard of Feireqingjie Oral Liquid / 中国中医药信息杂志

Objective To study the quality control method of Feireqingjie Oral Liquid. Methods UV was used to determine the content of total flavonoid. Cortex Mori was identified qualitatively by TLC. Pheretima was identified qualitatively by PC. Results Total flavonoid showed a good linear relationship in the range of 0.005 26-0.052 60 mg/mL, r=0.999 8. The average recovery rate was 98.65%, RSD=0.28% (n=6). The TLC spot of Cortex Mori was coincident with the standard reference, and Pheretima showed the same color as the reference in PC, with no interference of negative control. Conclusion The method is convenient, accurate and can be used as one of the quality control methods of Feireqingjie Oral Liquid.