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Table 3 Minimal Inhibition concentration (MIC), minimal bactericidal concentration (MBC) and ratio MBC/MIC of the most effective oils against respiratory microorganisms

From: Chemical composition of 8 eucalyptus species' essential oils and the evaluation of their antibacterial, antifungal and antiviral activities

Essential oils Tested microorganisms
  H.inf160a) Stre B3 S.pyo545 S.aur278
E. odorata MIC 0.306b) 10.417 9.792 156.667
MBC 0.306 20.834 19.584 156.667
MBC/MIC 1 2 2 1
E. bicostata MIC 0.331 10.562 NT 169.000
MBC 0.331 21.125 NT 169.000
MBC/MIC 1 2 NT 1
E. maidenii MIC NT NT NT 151.867
MBC NT NT NT 151.867
  MBC/MIC NT NT NT 1
  1. a): H. inf 160 = Hemophylus influenza (160); Strep B3 = Streptococus B3 = Streptococcus agalactiae 3; S.pyo 545 = Streptoccus pyogenes; S.aur 278 = Staphylococcus aureus.
  2. b): values were expressed as mg/ml; NT = Not tested.