Antimicrobial activity of extracts of some plants from Amasya (Turkey)

Abstract

The study is to test in vitro the antimicrobial efficacy of chloroform extracts of 10 plant taxa from Turkey and four of them are endemic. The antimicrobial activity from the extracts of various plants was determined according to the disc diffusion method by using Escherichia coli ATCC 25213, Escherichia coli ATCC 35218, Klebsiella pneumoniae ATCC 27736, Proteus vulgaris RSKK 96026, Yersinia enterocolitica RSKK 1501, Salmonella enteritidis RSKK 171, Pseudomonas aeruginosa NRLL B-23, Proteus vulgaris RSKK 96026, Listeria monocytogenes Li6, Staphylococcus aureus ATCC 25923, S. aureus Cowan I, Bacillus cereus RSKK 863, B. subtilis ATCC 6633, Candida albicans ATCC 10231 and C. tropicalis (clinical isolate). 10 extracts showed antibacterial activity against all test bacteria. Four plants namely Phlomis pungens var. pungens, P. pungens var. hirta, P. armeniaca, Tanacetum argenteum subsp. canum var. canum, demonstrated broad spectrum anticandidal activity. It is shown that there is no anticandidal activity of Astragalus densifolius subsp. amasiensis, A. angustifolius subsp. angustifolius var. angustifolius, Achillea biebersteinii, A. setacea, A. teretifolia, A. phrygia. B. subtilis and B. cereus were the most sensitive bacteria to all plant extracts. On the contrary, P. aeruginosa were the most resistant microorganism.