Table 3.
Surface tension of supernatant, obtained after washed bacteria cells increasing in surfactant solution (P. fluorescens P1)
| Concentration of surfactant (mg/l) | Surface tension (mN/m) and amount of adsorbed surfactant (mM) | |||||
|---|---|---|---|---|---|---|
| Rhamnolipides | Saponins | Triton X-100 | ||||
| Surface tension (mN/m) | Amount of adsorbed surfactant (mM) | Surface tension (mN/m) | Amount of adsorbed surfactant (mM) | Surface tension (mN/m) | Amount of adsorbed surfactant (mM) | |
| 30 | 33.0 ± 0.08 | 0.169 ± 0.007 | 57.5 ± 0.47 | 0.037 ± 0.006 | 47.4 ± 0.10 | 0.0127 ± 0.005 |
| 60 | 30.8 ± 0.12 | 0.399 ± 0.006 | 50.7 ± 0.32 | 0.087 ± 0.006 | 42.7 ± 0.42 | 0.04 ± 0.003 |
| 150 | 29.9 ± 0.18 | 0.61 ± 0.009 | 49.2 ± 0.25 | 0.09 ± 0.001 | 41.2 ± 0.31 | 0.06 ± 0.001 |
Control surface tension: suspension with bacteria cell, 69.9 ± 0.05 mN/m; water, 71.25 ± 0.09 mN/m