Polyphenol Content and in Vitro Antioxidant Activity of Aqueous-Ethanol Extracts of Pterocarpus Soyauxii and Pterocarpus Santalinoides

Emmanuela Neoma Akaniro-Ejim; Godwill Azeh Engwa

Authors

Emmanuela Neoma Akaniro-Ejim
Godwill Azeh Engwa

Keywords:

antioxidants; Pterocarpus soyauxii; Pterocarpus santalinoides; flavonoids; flavonols, ferric reducing potential, hydrogen peroxide scavenging activity

Abstract

Recently, medicinal plants are gaining considerable attention for their therapeutic antioxidant activities. Though many studies have investigated the pharmacological and medicinal activities of Pterocarpus soyauxii and Pterocarpus santalinoides, there is limited knowledge of their antioxidant potential. Hence, this study aimed to assess the polyphenol content and investigate the in vitro antioxidant activity of these plants. Aqueous-ethanol extracts of the plants' leaves were obtained by maceration. The total flavonoid content (TFdC) and total flavonol content (TFlC) of the leaf extracts were determined by standard methods, while ferric reducing power and hydrogen peroxide scavenging assays were used to assess their in vitro antioxidant potentials. The mean TFdC of P. santalinoides (1083.33 ± 35.12 mg/g) was higher than that of P. soyauxii (730 ± 40 mg/g), while the mean TFlC was higher in P. soyauxii (390 ± 60.83 mg/g) than in P. santalinoides (260 ± 45.83 mg/g). The reducing potential of extracts of P. santalinoides was significantly higher (p < 0.05) than that of P. soyauxii, as well as the standard compound, at all concentrations tested.

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Polyphenol Content and in Vitro Antioxidant Activity of Aqueous-Ethanol Extracts of Pterocarpus Soyauxii and Pterocarpus Santalinoides. (2018). Global Journal of Medical Research, 18(B2), 1-8. https://medicalresearchjournal.org/index.php/GJMR/article/view/1497

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