Antimicrobial activity of nigella sativa linn and semecarpus anacardium l. against escheriochia coli in vitro

Nigella sativa Linn. has moderate antibacterial action against Escherichia coli. The ethanolic and diethylether extracts subjected to antimicrobial activity exhibited 64.83% and 65.04% bacterial inhibition on agar diffusion method, respectively. But the alcoholic extract of Semecarpus anacardium L. did not exhibit prominent antibacterial action against Escherichia coli