Quality evaluation system of Astragali Radix by chemometrics / 中草药

ABSTRACT

Objective: To form the evaluation system of Astragali Radix by chemometrics. Methods: To establish the characteristic chromatogram for Astragali Radix with 20 samples from different regions and to analyze the methods data by principal components analysis and cluster analysis. Results: There is significant difference in the content of astragaloside I, IV, formononetin, and z6, z7 (unknown components) among the 17 characteristic components. And these components can be the critical index to distinguish the origin. Conclusion: It is a sensitivity evaluation system for the quality control of Astragali Radix.