Antimicrobial activity ofbeehoney, black cumin oil and green tea against multi-drug resistant pathogenic bacteria

Abstract

Four different concentrations (10%, 30%, 50% and 100%) of green tea, honey and black cumin oil were used as antibacterial agents against four multi-drug resistant pathogenic strains.Strains were obtained from Asidairy hospital, Sakaka city, Saudia Arabia. These strains include: Enterobacter cloacae, Serratia marcescens, Escherichia coli and Acinetobacter baumannii. Fixed volumes (1 ml) of the green tea, honey and black cumin oil poured into wells made in Mueller Hinton agar previously inoculated with a single bacterium. Zones of inhibition were measured after 48h incubation for each bacterium. Results indicated that E.coli was the only strain found to be sensitive to green tea (8-13mm).The four strains were sensitive or extremely sensitive to honey at concentrations 50% and 100 % and sensitive or extremely sensitive to black cumin oil at concentrations 30%, 50% and 100%.