Quantitative measurement of antimicrobial activity of exopolysaccharide (EPS)-producing isolates
| Isolates and species | Inhibitory action against pathogenic bacteria (± SD) | |
|---|---|---|
| Escherichia coli | Staphylococcus aureus | |
| Lactobacillus plantarum (P1) | 22.3 ± 1.2 mm | 19.4 ± 0.4 mm |
| Lacticaseibacillus helveticus (H1) | 18.3 ± 0.9 mm | 4.0 ± 0.1 mm |
| Pseudo plantarum (CP1) | 23.6 ± 0.4 mm | 18 ± 0.4 mm |
| Limosilactobacillus fermentum | ||
| F1 | 21.5 ± 0.4 mm | 32.1 ± 0.2 mm |
| F2 | 11.6 ± 0.3 mm | -- |
| Enterococcus faecium | ||
| E1 | -- | 24.6 ± 0.5 mm |
| E2 | -- | 23 ± 0.8 mm |
| Lactococcus lactis | ||
| L1 | 18.8 ± 0.8 mm | 2 ± 0.1 mm |
| L2 | 17 ± 0.4 mm | -- |
| Streptococcus thermophilus | ||
| S1 | 24.4 ± 0.7 mm | 24.8 ± 0.4 mm |
| S2 | 24.1 ± 0.6 mm | 23.3 ± 1.2 mm |
| S3 | 21 ± 0.8 mm | 17.6 ± 1.1 mm |
--: no inhibitory action. E1 and E2 isolates showed no inhibitory action against Escherichia coli. Similarly, F2 and L2 isolates exhibited no inhibition against Staphylococcus aureus; therefore, triplicate measurements were not performed for these isolates in the respective cases