Abstract
Abstract Bacterial resistance develops due to the overuse of antibiotics and increases due to the adverse effects of these chemicals. This urges the scientists to exchange these antibiotics with alternatives of natural products. This study was aimed at the evaluation of the antimicrobial efficiency of A. cyreniacum Hruby against a number of medically important pathogenic bacteria. Arum cyrenicum corms were successively extracted with petroleum ether, chloroform and methanol, and were tested for antimicrobial activities against Escherichia coli BTC3, Salmonella typhi BTC6, Pseudomonas aeruginosa BTC10, and Staphylococcus aureus BTC15. A considerable antibacterial efficiency of petroleum ether extract of A. cyrenaicum corms was specifically against gram-positive bacteria, Staphylococcus aureus. The plant extract has bactericidal activity against Staphylococcus aureus at (100 mg/ml) petroleum ether and bacteriostatic at (50 mg/ml) of petroleum Ether. Whereas, the methanolic extract of A. cyrenaicum corms showed antibacterial activity against gram-negative bacteria, Pseudomonas auregenosa, and showed significant bactericidal effect at 100 mg/ml of methanol extract. The results indicate that petroleum ether and methanolic extracts of A. cyrenaicum possess compounds with significant antibacterial properties