Antibacterial Effects of Ethanol and Acetone Extract of Plantago major L. on Gram Positive and Gram Negative Bacteria

Abstract

In this study, minimum inhibitor concentrations of acetone and ethyl alcohol extracts of Plantago major L. leaves on predetermined bacteria species was determinbed by Macrodilution liquid (tube) method. Both extracts were tested for nine bacteria species (Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Klebsiella pneumonia, Pseudomonas aeruginosa, Proteus mirabilis, Salmonella enteritidis). Ethyl alcohol extract showed no antibacterial activity against all species (except for E. coli and B. cereus), but acetone extract was effective on selected bacteria species in different concentrations.