The antioxdant activity of the plant extracts were evaluated on the scavenging activity of the stable 1,1-diphenyl-2-picrylhydrazyl ( DPPH) free radicals according to the previous procedure described by Saha et al.(2004). Stok solutions of all the extracts were prepared as 5 mg sample in 1 ml methanol (5000 ppm). The substock solution (1000 ppm) were prepared from 200 µl stock solution in 800 µl methanol. The substock solution were diluted to different concentrations (500 ppm to 7.8125 ppm in methanol) in a 96-well microtiter plate. Then , 5 µl DPPH solutions (prepared as 10 mg DPPH in 4 ml methanol) were added to each well. The plate was shaken gently and placed in the dark for 30 minutes at room temperature. The absorbance was then measured at 517 nm. Percentage inhibition was calculated using the following frmula: