Table 3. Degradation capacity of a wild type strain and a plasmid-cured strain of HC3.
| Substrate | Initial | Control group | HC3 (plasmid-free) | HC3 (plasmid-containing) |
|---|---|---|---|---|
| Concentration (mg L-1) | Biodegradation (%) | Biodegradation(%) | Biodegradation(%) | |
| Biphenyl | 9.45±0.85 | 6.2±2.5b | 12.2±3.8b | 94.0±2.2a |
| 3-CB | 8.49±0.51 | 14.1±5.5b | 21.48±1.8b | 78.1±1.0a |
| Benzoate | 11.65±0.42 | 4.9±5.8b | 4.6±2.0b | 98.1±0.8a |
| 3-CBA | 10.68±0.44 | 2.4±4.0b | 2.5±1.2b | 99.9±0.2a |
Note: Control group, inactive cells (OD600 1.0). Experimental group, active cells (OD600 1.0). Date are presented as mean ± standard deviation (n = 3). Data followed by the same lowercase letter in each row are not significantly different (P > 0.05).