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Natural Product Communications 2013-Sep

Antibacterial activity of the essential oil of Heracleum sibiricum.

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Dragoljub L Miladinović
Budimir S Ilić
Tatjana M Mihajilov-Krstev
Dejan M Nikolić
Olga G Cvetković
Marija S Marković
Ljiljana C Miladinović

Lykilorð

Útdráttur

The composition and antimicrobial activity of the essential oil of Heracleum sibiricum L. (Apiaceae) was studied. The aerial part of plant was hydro-distilled and chemical composition of the essential oil was analyzed by GC and GC-MS. Forty-six compounds, corresponding to 95.12% of the total oil, were identified. Esters represented the major chemical class (69.55%) while the main constituents were octyl butanoate (36.82%), hexyl butanoate (16.08%), 1-octanol (13.62%) and octyl hexanoate (8.10%). Antibacterial activity of the essential oil and reference antibiotics against nine bacterial strains was tested by the broth microdilution method. The results of the bioassays showed that essential oil had slight antimicrobial activities against all tested microorganisms (MIC and MBC values were in the range of 2431.2 to 9724.8 microg/mL). Reference antibiotics were active in concentrations between 0.5 and 16.0 microg/mL. The results confirm that Gram-positive bacteria were more susceptible to the essential oil of H. sibiricum, in comparison with Gram-negative bacteria.

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