Table 13.
Effect of UV on Lactobacillus helveticus (BLh) bacteriocin against Gram-positive bacteria.
| Gram-positive bacterial strains | Zone of inhibition (mm) vs. time variations (minute) | Pearson's correlation b/w time variations and activity (P value = 0.05 (two-tailed)) | R squared (r2) | |||||
|---|---|---|---|---|---|---|---|---|
| 15 min | 30 min | 45 min | 60 min | 75 min | ||||
| BLh bacteriocin | E. faecium | 2.9 | 2.58 | 2.42 | 2.37 | 1.96 | 0.006 (significant) | 0.927 |
| B. subtilis | 2.0 | 1.56 | 1.55 | 1.32 | 1.20 | 0.01453 (significant) | 0.8981 | |
| S. pyogenes | 0.9 | 0.73 | 0.61 | 0.42 | 0.18 | 0.000424 (significant) | 0.99 | |
| S. aureus | 5.0 | 5.05 | 4.98 | 4.98 | 4.58 | 0.084817 (not significant) | 0.6838 | |
| MRSA | 3.97 | 4.15 | 4.01 | 3.78 | 3.48 | 0.087703 (not significant) | 0.6768 | |