Microscopic and UPLC–UV–MS analyses of authentic and commercial yohimbe (Pausinystalia johimbe) bark samples

@article{Raman2012MicroscopicAU,
  title={Microscopic and UPLC–UV–MS analyses of authentic and commercial yohimbe (Pausinystalia johimbe) bark samples},
  author={Vijayasankar Raman and Bharathi Avula and Ahmed M. Galal and Yan-Hong Wang and Ikhlas A. Khan},
  journal={Journal of Natural Medicines},
  year={2012},
  volume={67},
  pages={42-50}
}
Yohimbine is the major alkaloid found in the stem bark of yohimbe, Pausinystalia johimbe (Rubiaceae), an evergreen tree native to Africa. The objectives of the current study were to provide a detailed anatomy of yohimbe bark, as well as to determine the quantity of yohimbine in the raw yohimbe products sold online. Twelve commercial raw materials of yohimbe were analyzed by microscopic and ultra performance liquid chromatography–UV–MS methods. The study revealed that three samples were probably… 

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