The free-radical scavenging activity of the various solvent
extracts of C. paniculatus seeds was determined using DPPH (2,2-
diphenyl picryl hydrazyl) (Mensor et al., 2001). 10 L of each plant
extract was added to 100 L of 0.2 mM methanol solution of DPPH.
The reaction mixture was shaken vigorously and incubated at 25 ◦C
for 5 min. The absorbance was measured at 520 nm. DPPH together
with corresponding solvents without any plant material served as
the control. The methanol with respective plant extracts served
as blank.