Simultaneous quantitative determination of five alkaloids in Catharanthus roseus by HPLC-ESI-MS/MS
2014
Zhang, Lin | GAI, Qing-Hui | ZU, Yuan-Gang | Yang, Lei | MA, Yu-Liang | Liu, Yang
To establish a method to simultaneously determine the main five alkaloids of Catharanthus roseus for trace samples, a high-performance liquid chromatography–electrospray ionization–tandem mass spectrometry (HPLC-ESI-MS/MS) analysis method was developed.The five Catharanthus alkaloids, vinblastine, vincristine, vinleurosine, vindoline, and catharanthine were chromatographically separated on a C18 HPLC column. The mobile phase was methanol–15 nmol·L⁻¹ ammonium acetate containing 0.02% formic acid (65 : 35, V/V). The quantification of these alkaloids was based on the Multiple Reaction Monitoring (MRM) mode.This method was validated, and the results achieved the aims of the study. The intra- and inter-day precision and accuracy of the five alkaloids were within 1.2%–11.5% (RSD%) and −10.9%–10.5% (RE%). The recovery rates of the five alkaloids of samples were from 79.9% to 91.5%. The five analytes were stable at room temperature for 2 h, at 4 °C for 12 h, and at −20 °C for two weeks. The developed method was applied successfully to determine the content of the five alkaloids in three plant parts of three batches of C. roseus with a minute amount collected from three regions of China.The HPLC-ESI-MS/MS method can be used for the simultaneous determination of five important alkaloids in trace C. roseus samples.
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