Table 3 Standard Gibbs free energies (∆G0′) of different degradation reactions of phenylacetate (C8H7O2−) and phenylpropionate (C9H9O2−)
No | Reactiona | ∆G0′ [kJ mol−1 substrate] |  |
|---|---|---|---|
1 | C8H7O2− + 8 H2O → 3 CH3COO− + 2 CO2 + 6 H2 + 2 H+ | + 123.1 | Phenylacetate conversion to acetate, CO2 and H2 via α-oxidation |
2 | C9H9O2− + 2 H2O → C8H7O2− + CO2 + 3 H2 | + 73.6 | Phenylpropionate conversion to phenylacetate, CO2 and H2 via α-oxidation |
3 | C9H9O2− + 10 H2O → 3 CH3COO− + 3 CO2 + 9 H2 + 2 H+ | + 196.7 | Phenylpropionate conversion to acetate, CO2 and H2 via α-oxidation |