Table 3.
Growth inhibition percentages obtained for Aspergillus niger MUM 92.13 with the purified mono-rhamnolipid and di-rhamnolipid congeners. The assays were performed at different concentrations of the purified rhamnolipid congeners with and without NaCl, at 25 °C for 5 days. The results represent the average of three independent experiments ± standard deviation. [RL]: concentration of mono-rhamnolipid or di-rhamnolipid congeners. NT: not tested.
| [RL] (g/L) | Mono-RL | Mono-RL + 875 mM NaCl | Di-RL | Di-RL + 875 mM NaCl |
|---|---|---|---|---|
| Growth inhibition (%) | ||||
| 0.05 | NT | NT | NT | 52.4 ± 1.2 |
| 0.1 | NT | NT | NT | 61.9 ± 1.2 |
| 0.2 | NT | NT | NT | 100.0 ± 0.0 |
| 0.375 | NT | NT | 41.0 ± 1.5 | 100.0 ± 0.0 |
| 0.75 | NT | 21.1 ± 2.4 | NT | 100.0 ± 0.0 |
| 1.5 | 46.2 ± 0.0 | 41.8 ± 1.4 | 40.0 ± 7.5 | NT |