Table 2.
Antibacterial activity of the different extracts of Aframomum melegueta using agar well diffusion assay.
| Average inhibition zones (±1.0 mm) produced by the different extracts of A. melegueta | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| NHE | NDME | DME | |||||||
| Organisms used | 10 | 1 | 0.1 | 10 | 1 | 0.1 | 10 | 1 | 0.1 |
| (mg/mL) | |||||||||
|
| |||||||||
| Micrococcus luteus | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 19 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 25 ± 1.00 | 18 ± 1.00 | 6 ± 1.00 |
| Bacillus subtilis KZN | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 29 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 40 ± 1.00 | 15 ± 1.00 | 6 ± 1.00 |
| Escherichia coli ATCC 25922 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 14 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 29 ± 1.00 | 14 ± 1.00 | 6 ± 1.00 |
| Staphylococcus aureus NCTC 6571 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 19 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 23 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 |
| Klebsiella pneumoniae ATCC 4352 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 14 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 20 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 |
| Aeromonas hydrophila ATCC 35654 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 20 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 25 ± 1.00 | 16 ± 1.00 | 12 ± 1.00 |
| Klebsiella pneumoniae ATCC 10031 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 14 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 20 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 |
| Plesiomonas shigelloides ATCC 51903 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 11 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 24 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 |
| Pseudomonas aeruginosa ATCC 15442 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 20 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 30 ± 1.00 | 20 ± 1.00 | 14 ± 1.00 |
| Pseudomonas aeruginosa ATCC 19582 | 6 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 16 ± 1.00 | 6 ± 1.00 | 6 ± 1.00 | 30 ± 1.00 | 15 ± 1.00 | 6 ± 1.00 |
NHE = n-hexane extract; NDME = nondefatted methanol extract; DME = defatted methanol extract.