Table 2.
Comparative analysis of siderophore types produced by S. aureus in axenic and co-culture conditions at 48 h.
| Conditions | Bacteria | Catechole (µg) |
Carboxylate (µg) |
Hydroxamate (µg) |
|
|---|---|---|---|---|---|
| Axenic | SA | 29.2 ± 0.1 | 44.3 ± 0.8 | 36.5 ± 0.5 | |
| PA | – | – | 48 ± 0.2 | ||
| SE | – | 42 ± 1.8 | 38 ± 1.2 | ||
| EC | 42 ± 0.5 | – | – | ||
| Co-culture | SA+PA | SA | – | – | – |
| PA | – | – | 33 ± 0.2 | ||
| SA+SE | SA | – | 54 ± 0.3 | 19 ± 1.2 | |
| SE | – | 32 ± 0.2 | – | ||
| SA+EC | SA | 31 ± 0.2 | 61 ± 1.6 | – | |
| EC | 53 ± 1.3 | – | – | ||
SA (axenic S. aureus), PA (axenic P. aeruginosa), SE (axenic S. epidermidis), EC (axenic E. coli), SA+PA (S. aureus co-cultured with P. aeruginosa), SA+SE (S. aureus co-cultured with S. epidermidis), SA+EC (S. aureus co-cultured with E. coli) Siderophores were quantitated as µg/ml at different time periods. The data represent mean± SD values of three replicates.
The symbol "-" indicates that no such type of siderophore was produced.