Microscopic and UPLC-UV-MS analyses of authentic and commercial yohimbe (Pausinystalia johimbe) bark samples.
J Nat Med
; 67(1): 42-50, 2013 Jan.
Article
en En
| MEDLINE
| ID: mdl-22402817
ABSTRACT
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 adulterated and four other samples contained various levels of impurities. Yohimbine was not detected in one sample, whereas its presence in other samples was found to be in the range 0.1-0.91%. The present work also provides a detailed anatomy of the stem bark of yohimbe, with light and scanning electron microscopy images, for proper identification and authentication.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Espectrometría de Masas
/
Yohimbina
/
Cromatografía Liquida
/
Corteza de la Planta
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Pausinystalia
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Microscopía
Idioma:
En
Revista:
J Nat Med
Asunto de la revista:
TERAPIAS COMPLEMENTARES
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos