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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.