Table 2.
The effect of surfactants at various concentrations on the growth and CSH of strain BL-27.
| Surfactant Concentration (mg/L) | Relative Growth % | CSH * % | ||||||
|---|---|---|---|---|---|---|---|---|
| 50 | 100 | 200 | 500 | 0 | 50 | 200 | 0 | |
| SDS | 103 ± 1.2 | 102 ± 1.5 | 100 ± 1.4 | 100 ± 1.3 | 100 | 16.4 ± 1.9 | 18.7 ± 2.3 | 24.9 ± 1.9 |
| Tween 80 | 99 ± 1.6 | 101 ± 1.6 | 101 ± 1.7 | 103 ± 1.8 | 100 | 22.6 ± 1.8 | 12.6 ± 1.6 | 24.9 ± 1.9 |
| Rhamnolipids | 97 ± 1.6 | 85 ± 2.0 | 83 ± 1.3 | 85 ± 2.1 | 100 | 16.9 ± 1.4 | 9.5 ± 2.1 | 24.9 ± 1.9 |
| Surfactin | 89 ± 1.6 | 87 ± 1.3 | 88 ± 1.1 | 85 ± 1.6 | 100 | 22.1 ± 2.1 | 19.4 ± 1.7 | 24.9 ± 1.9 |
| Triton X-100 | 48 ± 2.2 | 41 ± 4.2 | 37 ± 3.9 | 27 ± 3.1 | 100 | ND | ND | ND |
| CTAB | 6.2 ± 1.3 | 6.2 ± 1.2 | 5.7 ± 1.3 | 5.3 ± 1.3 | 100 | ND | ND | ND |
| TTAB | 3.9 ± 1.3 | 3.9 ± 1.2 | 3.5 ± 1.3 | 3.3 ± 1.4 | 100 | ND | ND | ND |
ND: not detected. * CSH toward n-hexadecane.