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Table 3 Minimum inhibitory concentration (MIC) and Minimum bactericidal and fungicidal concentrations (MBC, MFC) of compound 3 from A. ataxacantha

From: Triterpenoids from Acacia ataxacantha DC: antimicrobial and antioxidant activities

Minimum inhibitory concentrations (μg/ml)

Microorganismsa

Gram (+) bacteria

Gram (-) bacteria

Yeast

S. a

S.a.m.r

S. ep

E. f

P. a

C. a

3b

50

25

12.5

25

25

12.5

 Gentamicin

0.39

0.39

0.78

0.39

0.78

Nt

 Fluconazole

Nt

Nt

Nt

Nt

Nt

0.78

Minimum bactericidal and fungicidal (μg/ml)

3b

50

50

50

50

25

25

 Gentamicin

0.78

1.56

1.56

0.78

1.56

Nt

 Fluconazole

Nt

Nt

Nt

Nt

Nt

1.56

MIC index

3b

1

2

4

2

1

2

 Gentamicin

2

4

2

2

2

Nt

 Fluconazole

Nt

Nt

Nt

Nt

Nt

2

  1. aS.a : Staphylococcus aureus; S.a.m.r : Staphylococcus aureus methicillin resitant; S.ep : Staphylococcus epidermidis; E.f: Enterococcus faecalis; P.a: Pseudomonas aeruginosa; C.a: Candida albicans
  2. b3: betulinic acid-3-trans-caffeate
  3. Nt: not tested. MIC, MBC or MFC of compounds 1 and 2 were not determined