Total reducing power was carried out according to the method established by One millilitre of the extract at different concentrations (2–12 mg/ml), phosphate buffer (0.2 M, pH 6.6,2.5 ml) and potassium hexacyanoferrate solution (1% v/ m, 2.5 ml) were mixed in a test tube and incubated for 20 min at 50 °C. Then