Test bacteria | Concentration in (mg/L) | Mean zone of inhibition ± SD (mm) | ||
---|---|---|---|---|
Petroleum ether | Chloroform | Methanol | ||
Escherchia coli | 250 | 7.1 ± 1.6 | 8.0 ± 2.0 | 11.88 ± 1.0 |
200 | 5.3 ± 1.3 | 4.0 ± 0.7 | 9.7 ± 0.8 | |
150 | 1.2 ± 0.8 | 1.8 ± 2.6 | 6.4 ± 1.3 | |
100 | Growth | Growth | 3.8 ± 1.7 | |
50 | Growth | Growth | Growth | |
Klebsiella pneumoniae | 250 | 5.3 ± 1.1 | 5.78 ± 0.5 | 10.3 ± 1.3 |
200 | 2.5 ± 0.6 | 3.1 ± 2.1 | 5.2 ± 0.6 | |
150 | Growth | Growth | 1.5 ± 1.4 | |
100 | Growth | Growth | Growth | |
50 | Growth | Growth | Growth | |
Staphylococcus aureus | 250 | 10.3 ± 2.2 | 10.7 ± 3.0 | 17.3 ± 2.0 |
200 | 6.2 ± 2.1 | 6.8 ± 2.5 | 10.2 ± 1.75 | |
150 | 1.2 ± 1.0 | 1.5 ± 0.7 | 5.3 ± 0.6 | |
100 | Growth | 1.2 ± 0.5 | 2.35 ± 0.5 | |
50 | Growth | Growth | Growth | |
Streptococcus pyogenes | 250 | 8.7 ± 1.7 | 9.3 ± 2.1 | 10.8 ± 2.5 |
200 | 5.0 ± 1.3 | 6.8 ± 1.2 | 7.3 ± 1.8 | |
150 | 2.9 ± 1.8 | 1.4 ± 2.3 | 3.0 ± 2.5 | |
100 | Growth | Growth | Growth | |
50 | Growth | Growth | Growth |