engleski

Composition and Antibacterial Activities of Essential Oils of Seven Ocimum Taxa

GC/MS was used to identify compounds of essential oils from seven Ocimum taxa (O. americanum L., O. basilicum L., O. campechianum Mill., O. x citriodorum Vis., O. kilimandscharicum Baker ex Gürke and three botanical varieties and cultivars of O. basilicum L.: 'Genovese', var. difforme and var. purpurascens). Preliminary screening of their antibacterial activity was done against a number of common pathogens (Enterococcus faecalis, E. faecium, Escherichia coli 0157:H7, Listeria monocytogenes, L. ivanovii, Proteus vulgaris, Staphylococcus aureus, S. epidermis) using the filter paper disc agar diffusion technique while further analyses were done by modification of the disc diffusion method. A broad variation in the antibacterial properties of investigated essential oils was observed. E. coli 0157:H7 was inhibited by O. basilicum 'Genovese' essential oil while O. americanum and O. x citriodorum essential oils were the most effective against Enterococcus faecalis, E. faecium, Proteus vulgaris, Staphylococcus aureus and S. epidermis.

antibacterial activity; basil; chemical composition; disc agar diffusion method; GC-MS; pathogenic bacteria; volatiles compounds

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