Antibacterial activity of the Essential oils against multiresistant bacterial strains isolated from hospital

Due to increasing bacterial resistance, the research for antimicrobials of plant origin has been an important alternative. Thus, this study aimed to determine the antibacterial effect of essential oils from T .riatarum , and R. officinalis against 17 bacterial pathogens responsible for nosocomial infections isolated from hospitalized patients. The antibacterial activity was assessed by means of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) using the microdilution method. The essential oils of R. officinalis produced high inhibition zones against Micrococaceae especially towards Staphylococcus aureus strains (25 mm and 30 mm), in comparison, T. riatarum essential oils presented a moderate effect with inhibition diameters ranging from 9 mm to 15 mm. Overall, the T. riatarum and R. officinalis E.Os posses a significant antibacterial activity against 17 bacterial pathogens representing the most common pathogenic microorganisms, particularly, A. baumannii and staphylococcus strains which have been the most sensitive to T. riatarum oils, on the other hand, the most sensitive strains towards R. officinalis have been Gram (+) streptococci and E. coli for Gram (-) bacteria. This study emphasizes the high beneficial effects of the essential oils of T. ritarum and R. officinalis in inhibiting the growth of bacteria responsible for nosocomial infections. These EOs can be used to develop new therapeutic protocols for resistant infectious diseases