Table 1.
Organisms | Control | Concentration (ppm) | 100 ppm | 250 ppm | 500 ppm | 1000 ppm | |
---|---|---|---|---|---|---|---|
25 ppm | 50 ppm | ||||||
Salmonella typhi | 5.68 ± 0.59 mm | 2.50 ± 0.10 mm | 2.90 ± 0.14 mm | 2.95 ± 0.07 mm | 3.50 ± 0.10 mm | 3.67 ± 0.06 | 3.87 ± 0.06a |
Escherichia coli | 5.68 ± 0.59 mm | 3.07 ± 0.06 mm | 3.25 ± 0.07 mm | 3.33 ± 0.06 mm | 3.80 ± 0.20 mm | 3.90 ± 0.10 | 4.30 ± 0.20a |
Staphylococcus aureus | 5.83 ± 0.29 mm | 3.25 ± 0.07 mm | 3.45 ± 0.07 mmb | 4.25 ± 0.07 mmb | 4.60 ± 0.10 mmb | 4.75 ± 0.07b | 4.90 ± 0.10a |
Klebsiella pneumoniae | 5.68 ± 0.59 mm | 3.00 ± 0.17 mmb | 3.10 ± 0.10 | 4.00 ± 0.10 mmb | 4.27 ± 0.06 mm | 4.70 ± 0.10 | 5.00 ± 0.06a |
Values are mean ± SD for five determinations aSignificantly (p < 0.05) higher compared to different concentrations on the same organism in each row. bSignificantly (p < 0.05) higher compared to different concentrations on the same organism in each column.