Table 2.
Comparison of metabolic profiles of different isobutanol-producing B. subtilis under microaerobic conditions
|
Strain |
Isobutanol production |
Isobutanol yield |
Lactate |
Acetate |
Ethanol |
|---|---|---|---|---|---|
| (g/L) | (C-mol/C-mol) | (g/L) | (g/L) | (g/L) | |
| BSUL03 |
1.95 ± 0.18 |
0.16 ± 0.01 |
3.67 ± 022 |
3.73 ± 0.29 |
1.09 ± 0.13 |
| BSUL04 |
2.11 ± 0.15 |
0.18 ± 0.02 |
ND |
10.65 ± 1.04 |
1.82 ± 0.27 |
| BSUL05 |
1.17 ± 0.12 |
0.36 ± 0.02 |
ND |
ND |
ND |
| BSUL05(+) | 2.28 ± 0.17 | 0.29 ± 0.01 | ND | 4.46 ± 0.85 | ND |
Strains were cultured in LBGSM-I medium for 40 h under microaerobic conditions. The plus symbol indicates medium for BSUL05 cultivation is supplemented with 3 g/L sodium acetic acid; ND represents the product is not detected.