Abstract��
OBJECTIVE: To provide a method of quality control for Gongning granules (preparation of Chinese materia medica). METHOD: Thin-layer chromatography was employed for qualitative identification of the herbs of Sanqi, Huangqin, Baishao, Gancao and thin-layer chromatographic scanning was used for content determination of ginsenoside Rg1 in the preparation. RESULT: The spots of ginsenoside Rg1 on the TL plate had a good linear relationship between its content and area within the range of 1.1 ��g��6.6 ��g. The average recovery was 98.18%, and the RSD was 0.9%. CONCLUSION: The method of qualitative identification for the herbs (eg. Sanqi) and quantitative determination for ginsenoside Rg1 can be used for quality control because of their convenience, accuracy and good reproducibility.
1997, Vol. 32 
