Table 1.
Bacterial susceptibility to different concentrations of acetone stem bark extract of A. mearnsii.
| Tested bacterial isolates | Average inhibition zones produced by 100 μL of each concentration of antibacterial agents (±1.0 mm) | ||||||
|---|---|---|---|---|---|---|---|
| Erythromycin | Crude acetone extract of A. mearnsii | ||||||
| 50 | 20,000 | 10,000 | 5000 | 2500 | 1250 | 625 | |
| μg/mL | |||||||
| Proteus vulgaris KZN | 32 | 20 | 17 | 15 | 15 | 13 | 0 |
| Staphylococcus aureus OK1 | 31 | 19 | 14 | 0 | 0 | 0 | 0 |
| Enterococcus faecalis KZN | 0 | 20 | 16 | 14 | 0 | 0 | 0 |
| Klebsiella pneumoniae KZN | 14 | 22 | 20 | 18 | 16 | 15 | 14 |
| Proteus vulgaris CSIR 0030 | 38 | 35 | 33 | 27 | 23 | 20 | 19 |
| Bacillus cereus (ATCC 10702) | 30 | 24 | 22 | 20 | 17 | 16 | 14 |
| Escherichia coli (ATCC 25922) | 13 | 22 | 20 | 18 | 16 | 15 | 15 |
| Bacillus pumilus (ATCC 14884) | 16 | 22 | 19 | 18 | 18 | 18 | 16 |
| Salmonella typhi (ATCC 13311) | 13 | 27 | 24 | 20 | 16 | 14 | 0 |
| Serratia marcescens(ATCC 9986) | 18 | 27 | 24 | 22 | 21 | 20 | 18 |
| Klebsiella pneumoniae (ATCC 10031) | 30 | 22 | 20 | 18 | 17 | 16 | 15 |
| Pseudomonas aeruginosa (ATCC 19582) | 37 | 20 | 18 | 16 | 14 | 13 | 0 |