Table 2.
Antibacterial activity and MIC values of F. cretica crude extracts and ZnO NPs.
| Extract codes | Antibacterial assay | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Diameter of zone of inhibition in mm (Mean ± SD) (MIC: µg/ml) | ||||||||||
| S.A | MIC | K.P | MIC | P.A | MIC | E.C | MIC | B.S | MIC | |
| Crude extracts | ||||||||||
| nH | 7 ± 0.21 | – | 10 ± 0.25 | – | 5 ± 0.37 | – | 11 ± 0.17 | – | 7 ± 0.22 | – |
| EA | 7 ± 0.32 | – | 7 ± 0.17 | – | 5 ± 0.43 | – | 7 ± 0.21 | – | 6 ± 0.31 | – |
| M | 6 ± 0.25 | – | 14 ± 0.31 | 100 | 7 ± 0.21 | – | 12 ± 0.25 | 100 | 12 ± 0.17 | 100 |
| Aq | 8 ± 0.36 | – | 9 ± 0.27 | – | 6 ± 0.19 | – | 10 ± 0.28 | – | 13 ± 0.27 | 100 |
| Nanoparticles | ||||||||||
| nH | 10 ± 0.19 | – | 12 ± 0.25 | 100 | 6 ± 0.21 | – | 12 ± 0.17 | 100 | 9 ± 0.22 | – |
| EA | 5 ± 0.36 | – | 9 ± 0.18 | – | 6 ± 0.37 | – | 7 ± 0.21 | – | 12 ± 0.31 | 100 |
| M | 9 ± 0.25 | – | 18 ± 0.19 | 33.3 | 9 ± 0.25 | – | 16 ± 0.23 | 100 | 21 ± 0.40 | 3.7 |
| Aq | 7 ± 0.32 | – | 15 ± 0.28 | 100 | 8 ± 0.19 | – | 8 ± 0.28 | – | 13 ± 0.19 | 100 |
| DMSO | – | – | – | – | – | – | – | – | – | – |
*The sample concentration was 100 µg per disc. Values (mean ± SD) are average of triplicate analysis of each plant extract (n value of 1 × 3). – = No activity. Samples showing zone of inhibition ≤ 12 mm were not proceeded for MIC determination. . S.A = Staphylococcus aureus, B.S = Bacillus subtilis, P.A = Pseudomonas aeruginosa, K. P = Klebsiella pneumoniae, E.C = Escherichia coli. . Positive control = Cef: Cefaxime, Rox: Roxithromycin. –- = no activity.