S. aureus S. epidermidis P. aeruginosa E. cloacae K. pnaumioniae E. coli C. albicans C. tropicalis C. glabrata
Crude extract 0.04 0.05 0.21 0.25 0.34 0.18 0.73 0.56 0.32
Acidic fraction 0.19 0.20 0.27 0.38 0.47 0.25 1.10 0.98 0.78
Neutral fraction 0.45 0.52 0.73 0.88 1.00 0.64 1.25 1.00 0.85
Amphotericin - - - - - - 1.0·10-3 0.5·10-3 0.4·10-3
5-flucytocine   - - - - - 0.1·10-3 1.0·10-3 10·10-3
Amoxicillin with Clavulanic acid 0.5·10-3 5.0·10-3 1.0·10-3 1.0·10-3 1.6·10-3 1.2·10-3 - - -
Table 4: Antimicrobial activity MIC (mg/ml) of the mastic gum