Research Article

In Vitro Evaluation of Palestinian Propolis as a Natural Product with Antioxidant Properties and Antimicrobial Activity against Multidrug-Resistant Clinical Isolates

Table 5

The diameter of inhibition zone (mm), the minimum inhibitory concentration (mg/mL), and minimal bactericidal concentration (mg/mL) of Palestinian propolis samples.

Escherichia coli 87Escherichia coli 57Escherichia coli 97Pseudomonas aeruginosaStaphylococcus aureusStreptococcus faecalis

S1DI (mm)14.22 ± 0.7416.39 ± 1.1816.54 ± 0.579.83 ± 0.1819.2 ± 0.521.3 ± 0.3
MIC (mg/mL)52.52.52.50.632.5
MBC (mg/mL)52.5551.252.5

S2DI (mm)13.54 ± 1.2116.67 ± 1.3717 ± 110.45 ± 0.3821.3 ± 1.0120.5 ± 0.4
MIC (mg/mL)2.51.251.2550.312.5
MBC (mg/mL)2.51.252.550.312.5

S3DI (mm)15.67 ± 0.5716.62 ± 0.7318.33 ± 0.899 ± 0.519.5 ± 121.65 ± 0.84
MIC (mg/mL)1.251.250.6351.252.5
MBC (mg/mL)2.51.250.63ND1.255

S4DI (mm)9.66 ± 0.5912.82 ± 1.1212.33 ± 0.69.45 ± 0.516.95 ± 0.2915.15 ± 0.56
MIC (mg/mL)ND55ND2.52.5
MBC (mg/mL)ND55ND2.52.5

S5DI (mm)14.22 ± 0.614.33 ± 1.3317.67 ± 1.18.5 ± 0.5818.5 ± 0.819.5 ± 0.8
MIC (mg/mL)2.52.51.2550.632.5
MBC (mg/mL)52.51.25ND2.55

S6DI (mm)20.67 ± 2.5118.83 ± 1.3720.33 ± 0.5711.3 ± 0.629.6 ± 0.7828.25 ± 0.57
MIC (mg/mL)0.310.310.162.50.011.25
MBC (mg/mL)0.310.310.3150.012.5

S7DI (mm)10 ± 112.67 ± 0,611.53 ± 1.379.05 ± 0.317.15 ± 1.0215.5 ± 0.33
MIC (mg/mL)ND5551.252.5
MBC (mg/mL)ND55ND1.255

S8DI (mm)ND10.23 ± 0.3712.22 ± 0.57ND10.3 ± 0.3315.3 ± 0.6
MIC (mg/mL)NDND2.5ND2.55
MBC (mg/mL)NDND2.5ND2.55

S9DI (mm)15.33 ± 0.5715.28 ± 0.8013.33 ± 1.029 ± 0.3318.8519.8 ± 1.11
MIC (mg/mL)1.251.251.252.50.312.5
MBC (mg/mL)1.251.252.5ND0.312.5

S10DI (mm)ND11.43 ± 0.8912 ± 1.0210.15 ± 0.3114 ± 0.4510 ± 0.13
MIC (mg/mL)ND5552.55
MBC (mg/mL)ND5NDND2.55

DI, diameter of inhibition; ND, not determined.