TABLE 3.
Fermentation performances (mean ± SD) of E. coli GXASR1 under different IPTG induced concentrations in 40 h.
| Strain | IPTG (mM) | Glucose consumed (g/L) | OD600 | (R)-AC (g/L) | Yield (g/g) a | Productivity [g/(L·h) b ] |
|---|---|---|---|---|---|---|
| GXASR1 | 0 | 96.8 ± 0.6 | 8.52 ± 0.18 | 30.59 ± 1.15 | 0.32 | 0.76 |
| 0.01 | 97.3 ± 1.3 | 8.48 ± 0.37 | 32.70 ± 0.68 | 0.34 | 0.82 | |
| 0.05 | 95.1 ± 2.1 | 8.26 ± 0.49 | 28.64 ± 0.93 | 0.30 | 0.72 | |
| 0.10 | 93.6 ± 1.6 | 7.96 ± 0.51 | 27.38 ± 0.55 | 0.29 | 0.68 | |
| 1.00 | 86.7 ± 2.3 | 6.8 ± 0.35 | 22.44 ± 0.63 | 0.26 | 0.56 |
a
Production of AC/glucose consumption.
b
Production of AC/fermentation time; SD, standard deviation, n = 3.