Table 3.
Inhibition zone diameters of different organic extracts from Juglans regia L. bark by the disc diffusion method.
| Bacterial species/extracts | Ethanolic extract | Macerated ethanolic extract | Acetone extract | Macerated acetone extract | Diethyl ether extract | Macerated diethyl ether extract | Standard (+) | Standard (-) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mg/mL | 40 mg/mL | 80 mg/mL | 20 mg/mL | 40 mg/mL | 80 mg/mL | 20 mg/mL | 40 mg/mL | 80 mg/mL | 20 mg/mL | 40 mg/mL | 80 mg/mL | 20 mg/mL | 40 mg/mL | 80 mg/mL | 20 mg/mL | 40 mg/mL | 80 mg/mL | Tetra 20 μg/mL |
Ak 30 μg/mL |
DMSO (10%) | |
| B.G- | |||||||||||||||||||||
| Ecoli | 9 | 9.5 | 11 | 8 | 9 | 10 | 9 | 10 | 12 | 11 | 12 | 12 | 7 | 8 | 12 | 7.5 | 9 | 14 | 12 | 0 | 0 |
| Prote | 9 | 11.5 | 14 | 9 | 12.5 | 14.5 | 9 | 13 | 15.5 | 11 | 13 | 17 | 10 | 12 | 15.5 | 13.5 | 15 | 21.5 | 23 | 0 | 0 |
| Psdm | 11 | 8.5 | 14 | 9.5 | 11 | 14.5 | 11 | 11.5 | 14.5 | 12 | 15.5 | 18 | 0 | 7 | 7 | 0 | 7 | 10 | 0 | 21 | 0 |
| B.G+ | |||||||||||||||||||||
| Staph | 0 | 0 | 10 | 0 | 0 | 10 | 7.5 | 10 | 11 | 10 | 10 | 11 | 7 | 11 | 11 | 11.5 | 12.5 | 14.5 | 13 | 0 | 0 |
| Bacil | 9 | 10.5 | 11 | 9 | 9 | 10 | 10 | 11.5 | 12.5 | 10 | 12 | 14.5 | 11 | 12.5 | 15.5 | 14 | 15 | 20 | 0 | 24.5 | 0 |
| Lister | 11 | 11 | 15 | 9 | 10.5 | 12.5 | 9.5 | 11.5 | 11.5 | 11 | 15 | 16 | 7 | 8.5 | 9.5 | 0 | 9 | 11 | 0 | 26.5 | 0 |
B.G-: Gram-negative bacteria. Ecoli: Escherichia coli K12. Prote: Proteus mirabilis. Psdm: Pseudomonas aeruginosa CECT118. B.G+: Gram-positive bacteria. Staph: Staphylococcus aureus CECT976. Bacil: Bacillus subtilis DSM6633. Lister: Listeria innocua CECT 4030. Tetra: tetracycline. Ak: amikacin. DMSO: dimethyl sulfoxyde.