ANTIMICROBIAL ACTIVITY OF MEDICINAL PLANTS AGAINST DIFFERENT STRAINS OF BACTERIA

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February 2014, vol. 3, special issue 1 (Microbiology)
pages: 174-176
Article type: Microbiology of Microbiology
Abstract: In this study, methanolic extracts of Tilia cordata Mill. and Aesculus hippocastanum which had been described in herbal books, were screened for their antimicrobial activity against gramnegative and grampositive bacteria. The following strains of bacteria for antimicrobial activity were used gramnegative bacteria: Escherichia coli CCM 3988, Listeria ivanovii CCM 5884, Listeria innocua CCM 4030, Pseudomonas aeruginosa CCM 1960, Serratia rubidaea CCM 4684 and grampositive bacteria: Brochothrix thermosphacta CCM 4769, Enterococcus raffinosus CCM 4216, Lactobacillus rhamnosus CCM 1828, Paenobacillus larvae CCM 4483 and Staphylococcus epidermis CCM 4418 using disc diffusion method and microbroth dilution technique according to CLSI. Probit analysis was used in this experiment. Of the 2 plant extracts tested, all extracts showed antimicrobial activity against one or more species of microorganisms. The highest antibacterial activity of Tilia cordata and Aesculus hippocastanum methanolic extract was measured against gramnegative bacteria Pseudomonas aeruginosa used with disc diffusion method. The strong antimicrobial activity with microbroth dilution method of Tilia cordata and Aesculus hippocastanum were found against Listeria ivanovii.
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