Abstract
A new method based on high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry has been developed for simultaneous analysis of 27 components (eighteen diterpenoids, six phenolic acids, and three flavonoids) of Isodon serra, a famous traditional Chinese medicine. Separation on a C18 column was achieved by gradient elution with water and methanol both containing 0.1% formic acid. Identification and quantification of the analytes were achieved by use of a hybrid quadrupole linear ion-trap mass spectrometer. Multiple-reaction monitoring (MRM) was used for quantification, with switching of electrospray ion source polarity between positive and negative modes in the same chromatographic run. An information-dependent acquisition (IDA) method was used to trigger product ion scans above the MRM signal threshold so that the 27 compounds could be identified by use of enhanced product-ion scans (EPI). The method was fully validated (for linearity, precision, accuracy, and limits of detection and quantification). The results indicated that this simple method was rapid, specific, and reliable. The method was successfully applied to analysis of 45 batches of Isodon serra samples from different sources, and quantification of the compounds in Isodon serra was achieved.
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Acknowledgments
The work received financial support from the scientific and technological project of Hebei Province, China (no. 09276423D).
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Liu, P., Du, Y., Zhang, X. et al. Rapid Analysis of 27 Components of Isodon serra by LC–ESI-MS–MS. Chroma 72, 265–273 (2010). https://doi.org/10.1365/s10337-010-1642-6
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DOI: https://doi.org/10.1365/s10337-010-1642-6