Table 1.
Antimicrobial activity of cell free culture supernatant (CFCS) from P. alvei AN5 and the MICs of the synthesized antimicrobial peptide AN5-1 against test strains
| Bacterial test strains | Inhibition zones of CFCS | MICs (μg ml−1) of AN5-1 |
|---|---|---|
| Staphylococcus aureus a | +++ | 64 |
| Streptococcus agalactiae ATCC 12386 | – | – |
| Staphylococcus epidermidis | – | – |
| Lactobacillus plantarum ATCC 8014 | +++ | 32 |
| Lactococcus lactis ATCC 11454 | + | >128 |
| Bacillus subtilis | +++ | 32 |
| Bacillus cereus ATCC 14579 | ++ | 64 |
| Bacillus anthracis | + | 128 |
| Bacillus licheniformis | + | >128 |
| Bacillus flexus a | ++++ | 32 |
| MRSA | – | – |
| Escherichia coli ATCC 25922 | +++ | 8 |
| Escherichia coli | +++ | 8 |
| Salmonella enteritidis ATCC 13076 | ++++ | 4 |
| Pseudomonas aeruginosa | – | – |
| Enterobacter spp. | +++ | 16 |
| Serratia marcescens a | ++++ | 32 |
–, no inhibition zones; +, zone diameter 1–11 mm; ++, zone diameter 12–16 mm; +++, zone diameter 16–21 mm. ++++ zone diameter ≥22 mm
aTest strains are incubated in NA