Table 2.
Biomass concentrations cX, l-GalOA concentrations cP, l-GalOA yields YP/Sorbitol, and l-GalOA biotransformation yields YP/E in batch processes with S. cerevisiae SiHY001 at varying pH set-points after 160 h (stirred-tank reactors, V = 600 mL, T = 30 °C, DO > 30% air saturation, cSorbitol,0 = 10 g L-1, cd-GalA,0 = 5 g L-1; Fair = 0.5 vvm). Different letters indicate significant differences within the displayed data groups (p < 0.05) using a one-way ANOVA followed by a Tukey’s post hoc test
| pH | cX g L-1 |
cP g L-1 |
YP/Sorbitol, mol mol-1 |
YP/E, mol mol-1 |
|---|---|---|---|---|
| 3.0 (a) | 4.07 ± 0.35 | 1.32 ± 0.20de | 0.14 ± 0.00de | 1.01 ± 0.08 |
| 3.5 (b) | 4.53 ± 0.30 | 1.46 ± 0.02de | 0.19 ± 0.02de | 1.02 ± 0.07 |
| 4.0 (c) | 4.66 ± 1.26 | 1.98 ± 0.29e | 0.23 ± 0.00de | 0.93 ± 0.08 |
| 4.5 (d) | 5.04 ± 0.03 | 2.70 ± 0.21abe | 0.35 ± 0.04abce | 1.00 ± 0.08 |
| 5.0 (e) | 4.56 ± 0.96 | 3.75 ± 0.33abcd | 0.49 ± 0.04abcd | 0.92 ± 0.01 |