Table 2.
Antimicrobial activity of the nisin active extract (L. lactis LM29) against enological LAB and AAB (wine and vinegar origin) strains by the microtiter assay.
| Antimicrobial Activity (AU∗) | Number of O. oeni strains (total: n = 38) | Number of LAB∗ strains (total: n = 41) | Number of AAB strains (total: n = 29) |
|---|---|---|---|
| 0 | 8 | 5 | 21 |
| 1 | 0 | 6 | 5 |
| 2 | 1 | 7 | 1 |
| 4 | 0 | 8 | 0 |
| 8 | 1 | 7 | 0 |
| 16 | 1 | 4 | 1 |
| 32 | 2 | 1 | 1 |
| 64 | 2 | 1 | 0 |
| 128 | 13 | 1 | 0 |
| 256 | 3 | 1 | 0 |
| 512 | 3 | 0 | 0 |
| 1024 | 0 | 0 | 0 |
| 2056 | 4 | 0 | 0 |
AU, arbitrary units; LAB∗, lactic acid bacteria except O. oeni. One AU is defined as the maximum dilution factor of the active extract that inhibits 50% of the strain growth. Italic values correspond to the Antimicrobial Activity of the nisin active extract, in its units (AU).