Table 1.
Antibacterial activities of compounds studied.
| No. | Structure of samples | Bacteria/MICs (mg/mL) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Gram-negative bacteria | Gram-positive bacteria | ||||||||||
| Escherichia coli | Salmonella typhimurium | Pseudomonas aeruginosa | Acinetobacter calcoaceticus | Streptococcus pyogenes | Staphylococcus aureus | Bacillus subtilis | Rodococcus ruber | Enterococcus faecalis | Staphylococcus epidermidis | ||
| 3a |  |
>0.5 | 0.30 | >0.5 | >0.5 | 0.30 | 0.25 | 0.30 | 0.40 | 0.35 | 0.30 |
| 3b |  |
0.2 | >0.5 | >0.5 | 0.15 | 0.30 | 0.30 | 0.40 | 0.15 | 0.10 | >0.5 |
| 3c |  |
0.40 | 0.05 | 0.20 | 0.05 | 0.10 | 0.05 | 0.40 | 0.40 | >0.5 | 0.20 |
| 4a |  |
>0.5 | 0.30 | >0.5 | >0.5 | 0.20 | 0.20 | 0.40 | 0.40 | 0.30 | 0.40 |
| 4b |  |
0.05 | 0.15 | 0.30 | >0.5 | 0.40 | 0.10 | 0.10 | 0.30 | 0.35 | >0.5 |
| 4c |  |
>0.5 | 0.30 | >0.5 | 0.30 | 0.10 | 0.15 | 0.30 | 0.40 | >0.5 | 0.30 |
| 9 |  |
>0.5 | >0.5 | 0.30 | 0.30 | 0.05 | 0.10 | 0.05 | 0.05 | >0.5 | 0.15 |
| 11 |  |
0.40 | 0.35 | >0.5 | >0.5 | 0.20 | 0.15 | 0.05 | 0.20 | 0.20 | 0.05 |
| AM |  |
<0.05 | <0.05 | Nd | 0.15 | 0.05 | <0.05 | 0.25 | <0.05 | <0.05 | nd |
| KA |  |
<0.05 | <0.05 | <0.05 | >0.5 | <0.05 | <0.05 | <0.05 | <0.05 | >0.5 | <0.05 |
MIC: Minimum inhibitory concentration, AM: Amoxicillin, KA: Kanamycin, nd: not detected.