Optimization of extraction process of Chrysanthemi Flos by multi-index orthogonal experiment / 中国中药杂志

<p><b>OBJECTIVE</b>To explore quantitative assessment indicators of Chrysanthemi Flos, and optimize the extraction process of Chrysanthemi Flos through orthogonal experimental design.</p><p><b>METHOD</b>The concentration of ethanol, amount of ethanol, extraction time and extraction frequency were selected as factors in the L9 (3(4)) orthogonal experiment. A comprehensive assessment was conducted with the peak area of the eight major common peaks in the fingerprint of Chrysanthemi Flos as the indicators.</p><p><b>RESULT</b>The optimum extraction process was selected as follows: using ultrasonic extraction method, adding 30-fold ethanol with 80% concentration, extracting for 2 times for extraction, 40 min for each time.</p><p><b>CONCLUSION</b>The optimized extraction process is reliable, with controllable assessment indicators, which is significant to the standardization of the extraction process and quality control of Chrysanthemi Flos preparations.</p>

Application of spectrum-effect relationship in Chinese medicine research and related thinking / 中国中药杂志

Fingerprint technology is the key technology in modern Chinese medicine research, while spectrum-effect relationship research is the advanced stage of fingerprint research. Spectrum-effect relationship research can reveal the relationship between fingerprint and pharmacological effect through multiple statistical analyses, which can be used in Chinese medicine research. Spectrum-effect relationship has been used in many areas of Chinese medicine research, such as effective basis of single and compound Chinese medicine research, component compatibility research, processing mechanism research, pharmacological effect forecast research, technology optimization research, and so on. This paper systematically reviewed the application of spectrum-effect relationship in Chinese medicine research, and indicated some problems in spectrum-effect relationship research. At last, the authors give an outlook of the future of spectrum-effect relationship research.

Study on quality evaluation of cimicifugae rhizoma from different producing areas by HPLC fingerprint / 中国中药杂志

To establish a fingerprint for Cimicifugae Rhizoma from different producing areas. Column kromasil (4.6 mm x 250 mm, 5 microm) was employed with acetonitrile-0.1% formic acid solution as the mobile phase for gradient elution. The flow rate was 1.0 mL x min(-1), the detection wavelength was 254 nm. Twenty chromatographic peaks were extracted as the common peaks of fingerprint, and 21 batches of samples were compared and classified with such methods as similarity evaluation, cluster analysis and principle component analysis. The results showed 12 common peaks and three categories of samples. The method was so highly reproducible, simple and reliable that it could provide basis for quality control and evaluation of Cimicifugae Rhizoma from different producing areas.