Table 3.
Antibacterial activity (U a) of partial purified bacteriocins from B. subtilis 21 (Bs21-BLIS).
| Indicator bacteria | Bs21-BLIS | Morricin 269b |
|---|---|---|
| Gram-positive | ||
| Bacillus cereus 183 | 276 | 402 |
| Listeria innocua | 0 | 610 |
| Staphylococcus aureus | 276 | 1040 |
| Staphylococcus xylosus | 0 | 610 |
| Streptococcus pneumonia | 0 | 0 |
| Streptococcus pyogenes | 25 | 104 |
| Gram-negative | ||
| Enterobacter cloacae | 25 | 441 |
| Escherichia coli | 0 | 204 |
| Proteus vulgaris | 0 | 0 |
| Pseudomona aeruginosa | 0 | 610 |
| Salmonella sp. | 0 | 264 |
| Shigella flexneri | 0 | 63 |
aOne unit is defined as 1 mm2 of the zone of inhibition as determined by the well-diffusion method (see text). Data are the average of triplicate tests. A value of “0” indicates no inhibition.
bProduction of morricin 269 by LBIT 269 was performed as described [13].