Table 4.
Mean area of microbial growth inhibition zones in mm (n = 3) provided by the EEP samples.
| Samples | 2 × MBC concentrations of each Propolis | CHX 0.2% | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
| S. mutans | 9.5 | 16 | 14 | 15 | 15 | 15.5 | 16 | 10 | 14.5 | 20 |
| S. salivarius | 11 | 14 | 12 | 14 | 14 | 15 | 16 | 11 | 13 | 20 |
| S. mitis | 12.5 | 15 | 7.5 | 16.5 | 14 | 15.5 | 17 | 12 | 14.5 | 19.5 |
| L. acidophilus | 10.5 | 13.5 | 11 | 13.5 | 14 | 15 | 14 | 9 | 12 | 21 |
| C. albicans | 10.5 | 12 | 9.5 | 12.5 | 13.5 | 13 | 11.5 | 12 | 11 | 19 |
| E. coli | 10.5 | 14 | 11 | 13.5 | 14 | 15.5 | 14 | 9 | 11.5 | 20 |
| S. aureus | 12 | 15 | 8 | 16 | 14 | 15.5 | 16 | 12 | 14 | 20 |
∗Kermanshah (sample 1), Fasa (sample 2), Tabriz (sample 3), Neor Lake (sample 4), Sarab (sample 5), Gilan (sample 6), Khalkhal (sample 7), Kurdistan (sample 8), and Fereydun Shahr (sample 9). There were statistically difference between groups 2, 4, 5, 6, 7, and 9 (P-value < 0.05). There was a statistical difference between groups 1, 3, and 8 (P-value < 0.05). There were statistically difference between groups 2, 4, 5, 6, 7, and 9 with 1, 3, and 8 (P-value<0.001).