RESUMO
Objective:To establish the HPLC fingerprint of MaRSDenia tenacissima; To evaluate the different origins of MaRSDenia tenacissima by combining chemometric methods.Methods:High performance liquid chromatography (HPLC) method was adopted, with DiKMA C18 column (250 mm× 4.6 mm, 5 μm), acetonitrile-0.05% phosphoric acid aqueous solution as mobile phase gradient elution, flow rate of 1.0 ml/min. The detection wavelength was set at 230 nm, the column temperature was 30 ℃, and sample size was 10 μl. Chromatographic information was imported into the similarity evaluation system for TCM chromatographic fingerprints (2012 version) for similarity analysis. SPSS Statistics 26 was used for system clustering analysis, and SIMCA 14.1 software was used for principal component analysis and partial least squares discriminant analysis (PLS-DA).Results:Totally 12 common peaks were identified. Two chromatographic peaks were identified as tenacissoside G and tenacissoside I. The relative similarity of fingerprints of 15 batches of samples and references ranged from 0.942 to 0.995. When the square Euclidean distance was 20, the samples could be grouped into two categories: S1-S3, S13-S15 were grouped into one category, and S4-S12 were grouped into another category. Principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) showed that there were significant differences among 15 batches of MaRSDenia tenacissima, and there was a certain correlation with the origin.Conclusion:The results can provide a reference for analyzing the differences of MaRSDenia tenacissima from different producing areas and the quality standards of related formula granules in the later stage.