Study on Activities of the Essential Oil from Elsholtzia ciliata against Some Antibiotic-Susceptible and -Resistant Strains of Pathogenic Bacteria

향유 지상부의 정유의 수종 항생제 내성 병원성 균주에 대한 억제효과

  • Received : 2010.01.26
  • Accepted : 2010.02.04
  • Published : 2010.04.30

Abstract

The essential oil fraction was extracted from the aerial parts of the plant by steam distillation method and its composition was analyzed by GC-MS (gas chromatography-mass spectrometry) which led to the identification of 43 compounds. Dehydroelsholtzia ketone (56.81%) and elsholtzia ketone (30.05%) were identified as the predominant components of this oil. The antibacterial activities of the essential oil fraction were assessed by micro-dilution tests against antibioticsusceptible and -resistant strains of Streptococcus pneumoniae, Staphylococcus aureus, Salmonella enteritidis, and S. typhimurium. The oil inhibited most of the tested strains significantly resulting MICs (minimum inhibiting concentrations) between 2 mg/ml and >16 mg/ml. In most cases of this study Streptococcus pneumoniae and Staphylococcus aureus showed higher sensitivity to this oil than Salmonella strains.

Keywords

References

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