FLAVONOID CONTENT AND ANTIOXIDANT ACTIVITY N OF DIFFERENT ORGANIC CRUDE EXTRACTS OF THE STEM OF SOLANUM NIGRUM L. BY ELECTROCHEMICAL METHOD

Abstract

The present research aim ed to quantify the total flavonoid content and antioxidant properties in the different crude extract of the stem of Solanum nigrum that grow in southern Al geria. The results showed that EtOAc extract showed the highest flavonoid content ( 18.41 0.023 mg Q E/g). The electrochemical behavior of the chloroform , ethyl acetate and n butanol extracts were studied and indicated that a ll extracts were elec troactive a nd possess antioxi dant activity, chloroform extract showed the highest capacity ( 9.58 0.010 mg/g it has b een shown that these samples showed scavenging ability on superoxide anion produced by electrochemical reduction of oxygen. T he chlorofo rm extract was t he most efficient extract presenting the lowest I C 50 values (0.664 mg/ The bindin g cons tant (K b ) of the reaction and the change in free energy (ΔG) were calculated.