The experiment was carried out in triplicate.
The RSC was calculated by the following formula:
I=[(ABAA)/AB]100, where I is DPPH inhibition, %; AB is the
absorbance of a blank sample (t= 0 min);AAis the absorbance of
extract solution (t= 30 min). The amount of extract required to decrease the initial DPPH
concentration in the reaction by 50% is referred as an effective concentration, IC50