Free radical scavenging activity expressed as EC50
ranged from 0.5 to 8.9 mg dry extract/mg DPPH (see
Table 2). Values varied in the following order: ethyl acetate
fraction < ether fraction < butanolic fraction <
dichloromethane extract < water fraction < residue
2 < residue 1.
Correlation coefficients in CL method ranged from 1
to 0.877. IC50 values of the hydroxyl radical scavenging
activity ranged from 9.7 to 275 lg dry extract/ml (see
Table 2). The order was: ethyl acetate fraction < ether
fraction < butanolic fraction < dichloromethane extract
< water fraction. As it is observed from the above results,
the most active fraction is ethyl acetate fraction in both tests