ABSTRACT
Objective: The purpose of this study was to establish a QAMS analytical method for 16 compounds in Psoraleae Fructus, and attempt to evaluate the quality difference among different batches of Psoralen Fructus by chemometrics. Methods: All experiments were performed on three different HPLC instruments. Isopsoralen was used as the internal reference substance to determine the relative correction factors of the other 15 compounds. The robustness and durability of the measured relative correction factors of the 15 compounds were evaluated on different chromatograph instruments and columns; And the measurement result deviation was compared between QAMS method and the external standard method. Results: Under the established chromatographic conditions, the relative correction factors of 15 compounds in Psoraleae Fructus had high accuracy, good durability, and good reproducibility under different experimental conditions. The results obtained from two analysis methods showed no significant deviation. The results obtained by the new established QAMS analytical method showed that the consistency of compound types among different batches of Psoraleae Fructus were better, but the content of different componounds was relatively different. Conclusion: The newly established QAMS analytical method for simultaneous determination of 16 compounds in Psoraleae Fructus provides a more efficient method to evaluate the comprehensive quality of Psoraleae Fructus from different sources.
ABSTRACT
Objective: To establish UPLC method for the simultaneous determination of 10 components, such as psoralen, isopsoralen, psoralidin, bavachinin, isobavaenin, corylifolin, isobavachalcone, corylin, neobavaisoflavone, and bakuchiol in Psoralea Fructus, and to study the effect of processing time on 10 components in stir-frying Psoralea Fructus with salt solution. Methods: The chromatographic separation was achieved on a C18 column (50 mm×4.6 mm, 1.8 μm) with acetonitrile (A)-water (B) as mobile phase at the flow rate of 1.0 mL/min for gradient elution; The column temperature was 30℃. The determination wavelength was 250 nm. Results: The 10 components were well separated within 15 min. The RSD values of reproducibility were less than 3%. The stability was good in 24 h. The linear relationship between the concentration and peak areas of the 10 components was good (r≥0.9970). The average recoveries were 96%-105% and the RSD values were all less than 3%. Conclusion: The method is simple, reliable and accurate, could be used for the quality control of Psoralea Fructus. With processing time prolonged, the content of coumarins showed first decreased, then increased and last decreased. Flavonoids, bakuchiol and the total content of 10 components above were decreased.