Table 1.
Comparison of oil displacement activities of biosurfactant-based dispersants and individual biosurfactants under various conditions.
| Tested oil | Formulation | Condition | Oil displacement activity (%) | |
|---|---|---|---|---|
| BSF ratioa | DOR | |||
| Fuel oil | F1 (Extracellular glycolipid: Lipopeptide) | 1.0:2.0 | 1:10 | 85.49 ± 1.80 |
| F2 (Cell-bound glycolipid: Lipopeptide) | 1.0:1.0 | 1:20 | 88.24 ± 2.04 | |
| Extracellular glycolipid | 1.0 | 1:10 | 73.75 ± 1.25 | |
| Cell-bound glycolipid | 1.0 | 1:20 | 62.50 ± 2.50 | |
| Lipopeptide | 1.0 | 1:10 | 75.42 ± 3.15 | |
| Lipopeptide | 1.0 | 1:20 | 56.25 ± 3.75 | |
| BKC crude oil | F1 (Extracellular glycolipid: Lipopeptide) | 1.0:2.0 | 1:20 | 81.18 ± 1.18 |
| F2 (Cell-bound glycolipid: Lipopeptide) | 1.0:1.0 | 1:20 | 85.88 ± 1.18 | |
| Extracellular glycolipid | 1.0 | 1:20 | 77.92 ± 0.72 | |
| Cell-bound glycolipid | 1.0 | 1:20 | 55.42 ± 1.44 | |
| Lipopeptide | 1.0 | 1:20 | 74.58 ± 2.60 | |
aBSF ratio is the mass ratio of extracellular/cell-bound glycolipid to lipopeptide.