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Abstract
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In recent years fundamental research on medicinal plants in medicinal plant research centers all over the world, particularly Iran is increasing for the detection of medical effective agents and effect on biological pathogens. This study was aimed to determine the antibacterial effects of essential oil of Pulicaria gnaphalodes, Ducrosia anethifoli, Trachyspermum copticum, Foeniculum vulgare Mill and Majorana hortensis Minch plants against Proteus vulgaris, Pseudomonas aeruginosa and Shigella boydii bacteria. In this descriptive study, standard strains of Proteus vulgaris, Pseudomonas aeruginosa and Shigella boydii. Were obtained from school of veterinary medicine Shiraz. The effect of essential oils of medicinal herbs on the growth of bacteria was determined by disc diffusion, then MIC (Minimum Inhibitory Concentration) and MBC (Minimum Bactericidal Concentration). The analysis of the plants was measured by gas chromatography and GC method. The analysis of the components of the EOs by gas chromatography mass spectrometry the identification of 63 compounds. All essential oils tested in the present study displayed antibacterial activity on three bacterial strains, but T. copticum essential oil showed more effective activity than tetracycline antibiotics. However differences were observed between antibacterial activities of the essential oil. Antibacterial efficacy shown by these plants provides a scientific basis and thus, validates their traditional uses as homemade remedies. Isolation and purification of different phytochemicals may further yield significant antibacterial agents.
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