Table 2.
Physiological parameters for BP10001 under different fermentation conditions
| Xylose Batch | Glucose Fed-Batch | Glucose/Xylose Fed-Batch | |
|---|---|---|---|
| qglucose [g/g CDW/h]a | 0.79 | 0.65 | |
| qxylose [g/g CDW/h]a | 0.14 | 0.30 - 0.19c | |
| Yethanol [g/g]b | 0.33 | 0.39 | 0.38 |
| Yxylitol [g/g]b | 0.17 | 0.05/0.19d | |
| Yglycerol [g/g]b | 0.038 | 0.070 | 0.029 |
| Yacetate [g/g]b | 0.023 | <0.001 | <0.001 |
| C-recovery [%] | 99 | 100 | 94 |
a) Uptake rates were determined from data acquired in the first 20 h. S.D.s on uptake rates were < 10%.
b) Yield coefficients (g/g sugar consumed) were calculated using data after a reaction time of 120 h (batch) or 20 h (fed batch). S.D.s were < 10% (except Yglycerol: < 20%). Yacetate in fed-batch reactions was too low for an S.D. to be determined.
c) qxylose decreased over the initial 20 hours of fermentation (see also Figure 5B).
d) Yield coefficients are based on either the sum of consumed glucose and xylose or on consumed xylose alone.