TABLE 3.
Stoichiometric equations for the efficient ethanol-producing EMs that use pentoses and hexosesa
| Substrate | Equation | YETOH/sugar (g/g) | No. of EMs |
|---|---|---|---|
| Glucose | 1 glucose = 2 ethanol + 2 CO2 | 0.51 | 3 |
| 1 glucose = 2 ethanol + 2 CO2 + 2 ATP | 0.51 | 1 | |
| 1 glucose + 0.49 NH3 = 1.79 biomass + 1.40 ethanol + 0.11 H2 + 1.41 CO2 | 0.36 | 1 | |
| 1 glucose + 0.49 NH3 = 1.79 biomass + 1.40 ethanol + 0.11 formate + 1.30 CO2 | 0.36 | 1 | |
| Xylose | 1 xylose = 1.67 ethanol + 1.67 CO2 | 0.51 | 3 |
| 1 xylose = 1.67 ethanol + 1.67 CO2 + 0.67 ATP | 0.51 | 1 | |
| 1 xylose + 0.16 NH3 = 0.60 biomass + 1.47 ethanol + 0.04 H2 + 1.47 CO2 | 0.45 | 1 | |
| 1 xylose + 0.16 NH3 = 0.60 biomass + 1.47 ethanol + 0.04 formate + 1.43 CO2 | 0.45 | 1 |
a
The measure of biomass is 1 Cmol.