Effect of ethanolic extract of Clove (Eugenia caryophyllus) on growth of some types of pathogenic bacteria

Abstract

Effect of ethanolic extract of Clove (Eugenia caryophyllus) examined against (4) species of pathogenic bacteria ('Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Salmonella typhimurium) using: diffusion method, determination the minimum inhibitory concentration MIC, and minimum bactericidal concentration MBC. The results showed that Clove extract appeared high inhibitory effect on the growth of' 'Staphylococcus aureus & Pseudomonas aeruginosa, this inhibition increased with increasing the concentration. The MIC values were, 2.0, 4.0 mg/ml respectively, on the other hand, the MBC value against 'Staphylococcus aureus was 4.0 mg/ml. while the MBC value against Pseudomonas aeruginosa dose not effective. Further Escherichia coli & Salmonella typhimurium showed resistance to the activity of Clove extract.