Antibacterial and antioxidant activities of ethanol extract from Paullinia cupana Mart.

The ethanol extract from Paullinia cupana seeds was analysed by spectrophotometry to determine the concentration of catechol substances after treatment of the extract with p-aminophenol. The total phenolics content in the ethanol extract was also determined spectrophotometrically according to the Folin-Ciocalteu procedure and calculated as gallic acid equivalents (GAE). The concentration of catechol equivalent was 6.06 ± 0.13 mg/g (mean ± S.D.), while the total phenolic content was 8.43 ± 0.21 mg/g (mean ± S.D.). The correlation index between antioxidant activity and catechol content was 0.96.