TABLE 3.
Compound tested |
R. wratislaviensis IFP 2016 |
R. aetherivorans IFP 2017 |
||
---|---|---|---|---|
Degradation (%)c | Mineralization yield (%)d | Degradation (%)c | Mineralization yield (%)d | |
Benzene | 64.9a | 24.9a | 4.1a | 0a |
Ethylbenzene | 95.2a | 46.6a | 0a | ND |
Toluene | 99.7a | 65.8a | 0a | ND |
m-Xylene | 0a | ND | 0a | ND |
63.3b | 100b | |||
p-Xylene | 0a | ND | 0a | ND |
52.1b | 0b | |||
o-Xylene | 13.5a | 0a | 0a | ND |
48.1b | 42.1b | |||
Cyclohexane | 0a | ND | 0a | ND |
100b | 50.4b | |||
Octane | 97.5a | 44.9a | 21.4a | 61.9a |
Hexadecane | 32.1a | 100a | 96.3a | 20.1a |
Isooctane | 16.8a | 0a | 17.3a | 5.3a |
Cyclohexanol | 100a | 43.6a | 100a | 46.7a |
MTBE | 3.2a,f | 0a | 22.3a,f | 0a |
ETBE | 0a,f | ND | 100a,f | 18.2a |
TBA | 0a | ND | 0a | ND |
2-EHN | 0b | ND | 26.2b | 12b |
Naphthalene | 100a | 36.4a | NT | NT |
The substrate was added directly to the culture medium (5 μl) at a final concentration of ∼200 mg liter−1.
The substrate was added after dissolution into HMN (5 μl/0.5 ml of HMN).
The values are means based on the values obtained for two test flasks; the extent of degradation was calculated as described in Materials and Methods.
The values are means based on the values obtained for two test flasks; the extent of mineralization was calculated as described in Materials and Methods and with respect to the substrate degraded.
The results are the average value of two independent measurements. ND, not determined; NT, not tested.
TBA was produced stoichiometrically, confirming the ether degradation measurement.