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Revista Brasileira de Plantas Medicinais

Print version ISSN 1516-0572


MOTTA, E.V.S. et al. Antioxidant, antinociceptive and anti-inflammatory activity of Mucuna pruriens (L.) DC. leaves. Rev. bras. plantas med. [online]. 2013, vol.15, n.2, pp.264-272. ISSN 1516-0572.

The species Mucuna pruriens (L.) DC. (Fabaceae) is popularly known in Brazil as "café berão" and "pó de mico". Its seeds have been widely studied and used in folk medicine for the treatment of nervous and reproductive system disorders; however, few studies are related to the chemical composition and pharmacological activity of its leaves. Therefore, the aims of this study were: investigation of the phytochemical profile, in vitro assessment of the antioxidant activity, and in vivo evaluation of the anti-inflammatory and antinociceptive activities of methanol extract of M. pruriens leaves at the concentrations of 100 and 300mg/kg. The phytochemical study was performed by means of qualitative identification of chemical constituents and quantitative determination of total phenols and flavonoids. The antioxidant potential was assayed by DPPH and reducing power methods. Anti-inflammatory and antinociceptive activities were evaluated by croton oil-induced ear edema and acetic acid-induced writhing tests, respectively. Alkaloids, coumarins, flavonoids, triterpenes and saponins were identified in the extract. Total phenol and flavonoid levels were 112 and 18.3mg/g extract, respectively. The antioxidant potential was promising, with IC50 of 13.2∝g/mL by DPPH assay and EC50 of 47.9∝g/mL by the method that evaluates the reducing power. Regarding the anti-inflammatory activity, the extract was capable of inhibiting by 63% (100mg/kg) and 28% (300mg / kg) the ear edema. As to the antinociceptive activity, there was a reduction in the number of writhings by 64% (100mg/kg) and 69% (300mg/kg). Results indicate that M. pruriens presents a promising pharmacological potential and reinforce the concept that the investigation of ethnopharmacologically used plants may reveal a substantial number of positive responses in in vitro and in vivo assays.

Keywords : Mucuna pruriens; antioxidant; antinociceptive; anti-inflammatory.

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