Chemical composition, antioxidant, and enzyme inhibitory properties of Rauwolfia vomitoria extract

Author:

Adebayo Adeniyi A.12,Ademosun Ayokunle O.2,Oboh Ganiyu2

Affiliation:

1. Chemical Science Department (Biochemistry Unit) , Joseph Ayo Babalola University , Ikeji-Arakeji , Nigeria

2. Functional Foods and Nutraceutical Unit, Biochemistry Department , Federal University of Technology , Akure , Nigeria

Abstract

Abstract Objectives Rauwolfia vomitoria is one ethno-botanicals in Nigeria used by traditional health practitioners in managing several human diseases. However, necessary information regarding its effect on enzymes implicated in the development and progression of erectile dysfunction is missing in the literature. Thus, this study investigated the antioxidant property and impact of Rauwolfia vomitoria extract on erectile dysfunction-related enzymes in vitro. Methods High performance liquid chromatography was used to identify and quantify Rauwolfia vomitoria’s phenolic components. Then, utilizing common antioxidant assays, the extract’s antioxidant properties were evaluated and finally the effect of the extract on some enzymes (AChE, arginase and ACE) implicated in erectile dysfunction was investigated in vitro. Results The results showed that the extract inhibited AChE (IC50=388.72 μg/mL), arginase (IC50=40.06 μg/mL) and ACE (IC50=108.64 μg/mL) activities. In addition, phenolic rich extract of Rauvolfia vomitoria scavenged radicals and chelated Fe2+ in concentration dependent manner. Furthermore, rutin, chlorogenic acid, gallic acid, and kaempferol were found in large quantities by HPLC analysis. Conclusions Therefore, one of the potential reasons driving Rauwolfia vomitoria’s use in folk medicine for the treatment of erectile dysfunction could be its antioxidant and inhibitory activities on several enzymes linked to erectile dysfunction in vitro.

Publisher

Walter de Gruyter GmbH

Subject

Complementary and alternative medicine

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