Demonstration of Antimicrobial Activity of Commercial Oolong Tea and Green Tea Against Pathogenic Bacteria

摘要

While an array of plants has long been used for the preparation of medicines, tea plants can be used for disease medication since they have been reported to possess anti-bacterial attributes. Present study emphasized on the assessment of antimicrobial activity of tea against Bacillus spp. (SkB01), E. coli (SkE01), Klebsiella spp. (SkK01), Pseudomonas spp. (SkP01), Salmonella spp. (SkS01), Vibrio spp. (SkV01). Oolong tea and green tea were used to determine the antimicrobial activity employing minimal inhibitory concentration (MIC) methods. The results clearly illustrated interesting antimicrobial potentials of both experimented teas against the tested microorganisms. Oolong tea exhibited the anti- bacterial activity against E. coli (SkE01), Klebsiella spp. (SkK01), Pseudomonas spp. (SkP01) and Salmonella spp. (SkS01). As well, green tea exhibited the anti-bacterial activity against Bacillus spp. (SkB01) and Vibrio spp. (SkV01). The in vitro anti-bacterial activity of oolong tea and green tea against the bacterial pathogens revealed most of the tea plants to be effective against the growth and survival of the pathogenic bacteria.