Radical Scavenging Capacity of Piper arboreum and Piper tuberculatum (Piperaceae)
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Undergraduate course
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Colegio Farmaceuticos Provincia de Buenos Aires
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Article
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Abstract
In the scope of our ongoing researchers on antioxidant compounds, twenty four extracts and fractions obtained from Piper arboreum Aublet and Piper tuberculatum Jacq. (Piperaceae) were screened for radical scavenging capacity (RSC) by using DPPH colorimetric assay. The strongest activity was found in ethyl acetate fractions from the leaves of P. arboreum IC(50) = 5.70 mu g/mL) and P. tuberculatum IC(50) = 8.40 mu g/mL). Hydromethanol fractions of the leaves of P. tuberculatum and P. arboreum showed moderate RSC, with values of IC(50) (mu g/mL) of 11.9 and 19.2, respectively. Additionally, a brief phytochemical study of the ethyl acetate fraction of P. arboreum leaves affording quercetin (1) and quercitrin (2), two flavonols with antioxidant activity previously described in the literature.
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Keywords
Antioxidant, DPPH, Piper arboreum, Piper tuberculatum, Piperaceae, Radical Scavenging Capacity
Language
English
Citation
Latin American Journal of Pharmacy. La Plata: Colegio Farmaceuticos Provincia de Buenos Aires, v. 27, n. 6, p. 900-903, 2008.
