Table 2.
Antimicrobial activity of U. rigida collected seasonally from Ghar El Melh lagoon (data are in mm of inhibition diameter).
| Dichloromethane | Dichloromethane/methanol | |||||||
|---|---|---|---|---|---|---|---|---|
| Winter | Spring | Summer | Autumn | Winter | Spring | Summer | Autumn | |
| E. coli O126 B16 | - | - | - | - | 8±0 | 11,3±1.1 | 7±0 | 8±0 |
| V. tapetis CECT 4600 | - | - | - | 12±0 | - | - | - | 11,5±0.5 |
| P. cepacia | - | - | 11,8±0.2 | 12,6±0.5 | 11,6±0.5 | 9,6±0.5 | 14,3±0.5 | 12±0 |
| P. aeruginosa ATCC 27853 | - | 11±0 | 7±0 | - | - | - | - | - |
| A.eromonas salmonicida | 14±0 | 14±0 | 14±0 | 14±0 | 12±0 | 10±0 | 11±0 | 11±0 |
| A. hydrophilaB3 | - | 11±0 | - | 15,6±0.5 | 9,3±1.1 | 10±0 | 14±0 | 15±1 |
| S. typhymurium | 11,3±1.1 | - | - | 12±0 | 12±0 | 15,6±0.5 | 11,6±0.5 | 14±0 |
| Str. agalactiae | 12,3±0.5 | 11,6±0.5 | 14±0 | 14,6±1.1 | 10,3±0.5 | 8,6±0.5 | 14,3±1.5 | 14,6±0.5 |
| S. aureus | 7±0 | 7±0 | 8,6±0.5 | 10±0 | 10±0 | 12,6±2.3 | 13,3±1.1 | 16±0 |
| S. aureus ATCC 25923 | 13±1 | 17,3±1.1 | 17±0 | 16±0 | 10±0 | 16±0 | 18±0 | 16±0 |
| S. aureus ATCC 6538 | 10,3±0.5 | 11±0 | 13±0 | 10,3±0.5 | 9±0 | 10±0 | 13,6±0.5 | 11±0 |
| E. faecalis ATCC 29212 | 11,5±0.8 | 11,3±1.1 | 14,3±0.5 | 15,6±0.5 | 12±0 | 11,3±1.1 | 14±0 | 17±1 |
Extracts were tested at concentrations of 500 μg/disc; +/-: represents the standard deviation; the number of independent replicates was n=3.