Table 6.
Antibacterial activity of EPS and IPS from C. cicadae
| Bacterial Strains | Inhibition Zone EPS (mm) | Inhibition Zone IPS (mm) | Positive control (tetra cycline) | Negative Control (EDTA)- | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 25 % (con.) | 50 % (con.) | 75 % (con.) | 100 % (con.) | 25 % (con.) | 50 % (con.) | 75 % (con.) | 100 % (con.) | |||
| Escherichia coli | 7.1 ± 0.5 | 9.2 ± 0.3 | 10.2 ± 0.4 | 11.1 ± 02 | 8.0 ± 0.2 | 10.8 ± 0.2 | 11.8 ± 0.9 | 11.9 ± 0.1 | 21 ± 1.52 | - |
| Klebsiella pneumonia | - | - | 8.2 ± 0.5 | 9.3 ± 0.6 | - | - | 8.9 ± 0.3 | 10.8 ± 0.3 | 23 ± 2.35 | - |
| Vivrio cholerae | - | 7.2 ± 0.2 | 9.3 ± 02 | 10.5 ± 0.8 | - | 7.8 ± 0.7 | 9.9 ± 0.2 | 10.9 ± 0.6 | 19 ± 1.50 | - |
| Pseudomonas aeruginosa | 8.2 ± 0.3 | 9.4 ± 0.6 | 11.3 ± 0.7 | 12.5 ± 0.3 | 8.6 ± 0.5 | 9.9 ± 0.5 | 11.5 ± 0.6 | 12.9 ± 0.2 | 18 ± 1.21 | - |
| Vibrio alginolyticus | - | 6.2 ± 0.8 | 10.5 ± 0.2 | 10.9 ± 0.3 | - | 6.8 ± 0.1 | 10.9 ± 0.3 | 11.2 ± 0.7 | 18 ± 2.15 | - |
| Staphylococcus aureus | - | - | 9.2 ± 0.8 | 10.1 ± 0.2 | - | - | 9.5 ± 0.8 | 10.9 ± 0.3 | 15 ± 2.33 | - |
| Vibrio parahaemolyticus | 7.3 ± 0.6 | 9.2 ± 0.4 | 10.4 ± 0.5 | 11.1 ± 0.9 | 7.6 ± 0.6 | 9.7 ± 0.4 | 10.9 ± 0.2 | 11.5 ± 0.8 | 16 ± 1.92 | - |
| Streptococcus pneumonia | - | - | 7.5 ± 0.1 | 9.2 ± 0.5 | - | - | 8.2 ± 0.1 | 9.9 ± 0.9 | 15 ± 1.88 | - |
con. – concentration, p values < 0.05