Table 1.
Antibacterial activity of extracts of algae against pathogenic bacteria (inhibition of growth expressed as mm diameter of inhibition zone).
| Escherichia coli ATCC 25322 | Pseudomonas aeruginosa ATCC 27853 | Stapylococcus aureus ATCC 29213 | Enterococcus faecalis ATCC 29212 | ||
|---|---|---|---|---|---|
| Ampicillin | 11.6 | 0 | 0 | 19.5 | |
| Oxacillin | 0 | 0 | 18.1 | 0 | |
| Ceftazidime | 0 | 14.6 | – | 0 | |
| Ulva reticulata | |||||
| Ethanol | 25 | 14 | 12.6 | 15 | |
| Chloroform | 29.3 | 24 | 16.6 | 11 | |
| Petroleum Ether | 0 | 0 | 0 | 0 | |
| Water | 0 | 0 | 0 | 0 | |
| Caulerpa occidentalis | |||||
| Ethanol | 11 | ||||
| Chloroform | 30 | 9.6 | 18 | 10 | |
| Petroleum Ether | 0 | 0 | 0 | 9.5 | |
| Water | 0 | 0 | 0 | 0 | |
| Cladophora socialis | |||||
| Ethanol | 20 | 23 | 15 | 11 | |
| Chloroform | 28 | 27 | 10 | 10 | |
| Petroleum Ether | 0 | 0 | 0 | 10 | |
| Water | 0 | 0 | 0 | 0 | |
| Dictyota ciliolata | |||||
| Ethanol | 13 | 16 | 12 | 14 | |
| Chloroform | 30 | 25 | 15 | 11 | |
| Petroleum Ether | 0 | 0 | 0 | 0 | |
| Water | 0 | 0 | 0 | 0 | |
| Gracilaria dendroides | |||||
| Ethanol | 26.3 | 12.3 | 8 | 12 | |
| Chloroform | 32.6 | 24.6 | 10 | 12.6 | |
| Petroleum Ether | 0 | 0 | 0 | 0 | |
| Water | 0 | 0 | 0 | 0 | |