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Quality Control of Lonicerae Japonicae Flos by Multi-Marker Components Quantitative Fingerprint

??OBJECTIVE To establish a method for the quality control of Lonicerae Japonicae Flos by multi-components quantitative fingerprint. METHODS Chlorogenic acid was selected as the marker of ingredients to establish the HPLC fingerprint and as the internal reference standard to determine the contents of other eight components(neochlorogenic acid, cryptochlorogenic acid, chiratin, rutin, galuteolin, isochlorogenic acid B, isochlorogenic acid A and isochlorogenic acid C) according to the relative correction factor of quantitative analysis of multi-components by single marker(QAMS) by slope correction method. At the same time, the nine components were determined by external standard method. The accuracy and feasibility of QAMS were evaluated by comparison of the results between external standard method and QAMS. RESULTS The fingerprint of Lonicerae Japonicae Flos was established, 21 common peaks were identified in all the tested samples, nine of which were verified, the similarities of 20 batches of Lonicerae Japonicae Flos samples were in the range of 0.959-0.997, and there was no significant difference between the quantitative test results of nine ingredients in 20 batches by the QAMS method and external standard method. CONCLUSION The method of multi-marker components quantitative fingerprint is feasible and accurate for the quality control of Lonicerae Japonicae Flos, and it might be a new quality evaluation pattern for Traditional Chinese medicine.