Table 3.
Antimicrobial activity of cell-free culture supernatants (CFSN) of L. plantarum ATCC 8014 at pH 4.3 and 6.5 against Clostridium spp. by the agar overlay diffusion.
| Clostridium spp. | Inhibition Zone Diameters of CFSN in mm (±SD) at: | t 1 | p Value 1 | |
|---|---|---|---|---|
| pH 4.3 | pH 6.5 | |||
| C. butyricum ATCC 860 | 16.5 (0.5) | 14.7 (0.5) | 5.97 | 0.002 |
| C. difficile ATCC 9689 | 14.2 (0.8) | 13.2 (0.4) | 2.24 | 0.076 |
| C. perfringens ATCC 12924 | 14.3 (0.8) | 13.7 (0.5) | 1.35 | 0.235 |
1 Comparative analysis was performed by paired Student’s t-test (p < 0.05).