and Olajire and Azeez (2011). One milliliter of sample from aqueous or ethanol extract was mixed with 1 ml of Folin and Ciocalteu’s phenol reagent (1:9; Folin-Ciocalteu reagent: distilled water). After 5 min, 1 ml of 13% sodium carbonate solution was added to the mixture and adjusted to 10 ml with distilled water. The reaction was kept in the dark for 90 min and its absorbance was read at 725 nm. A calibration curve was constructed with different concentrations of gallic acid as standard. The results were expressed as mg of gallic acid equivalents (GAE) per gram of extract.