الملخص

Abstract In the present study, antibacterial properties of different extracts from Rumex crispus L. roots were screened against eight types of Gram-positive and negative bacteria including Staphylococcus aureus, Bacillus cereus Pseudomonas aeruginosa, Proteus vulgaris, Serratia marcescens, Escherichia coli, Salmonella typhimurium, Klebsiella pneumoniae and compared with standard antibiotics. The ethanol extract demonstrated significant inhibitory effects against most bacteria under test compared with acetone and aqueous extract, which gave clear inhibitory effect against E. coli and Ps. aeruginosa, the study also revealed the resistance of Serr. marcescens, Sal. typhimurium and Kleb. pneumoniae against the different extracts used.