TABLE 1.
Inhibitory spectrum of micrococcin P1a
| Species | No. of strains
|
|
|---|---|---|
| Sensitive | Nonsensitive | |
| Gram-positive bacteria | ||
| Staphylococcus spp. | ||
| S. aureus | 15 | 0 |
| S. epidermidis | 2 | 0 |
| S. haemolyticus | 1 | 0 |
| S. caseolyticus | 1 | 0 |
| S. xylosus | 1 | 0 |
| S. saprophyticus | 1 | 0 |
| Enterococcus spp. | ||
| E. faecalis | 1 | 0 |
| E. faecium | 1 | 0 |
| Listeria | ||
| L. monocytogenes | 85 | 0 |
| L. innocua | 5 | 0 |
| L. ivanovii | 2 | 0 |
| L. seeligeri | 2 | 0 |
| L. welshimeri | 1 | 0 |
| Bacillus cereus | 7 | 0 |
| 4 | 7 | |
| Clostridium perfringens | 8 | 0 |
| Lactobacillus sp. | 12 | 0 |
| Coryneform bacteria | 0 | |
| Brevibacterium sp. | 24 | 0 |
| Arthrobacter sp. | 30 | 1 |
| Corynebacterium sp. | 14 | 0 |
| Microbacterium sp. | 4 | 0 |
| Micrococcus sp. | 4 | 0 |
| Gram-negative bacteria | ||
| Salmonella sp. | 0 | 11 |
| Citrobacter freundii | 0 | 5 |
| Enterobacter sp. | 0 | 5 |
| Escherichia coli | 0 | 9 |
| Yersinia enterocolitica | 0 | 3 |
| Pseudomonas sp. | 0 | 4 |
a
The micrococcin P1-containing sterile-filtered culture supernatant (12,800 AU/ml) was used for sensitivity screening.