Fig. 4

Dimensionless parameter (\(({{Ip}_{a}^{0}}-{{Ip}}_{a}^{s})/{{Ip}}_{a}^{0}\)) related to the decrease in \({\rm{O}}_{2}^{\bullet-}\) current vs. the concentration of P. cecropiifolia Mart. extracts.
Dimensionless parameter (\(({{Ip}_{a}^{0}}-{{Ip}}_{a}^{s})/{{Ip}}_{a}^{0}\)) related to the decrease in \({\rm{O}}_{2}^{\bullet-}\) current vs. the concentration of P. cecropiifolia Mart. extracts.