Table 3 Sugar utilization, ABE concentrations, yields and productivities of C. acetobutylicum and C. beijerinckii
Parameters | GlucoseC. acetobutylicum ATCC 824 | Milk dustC. acetobutylicum ATCC 824 | GlucoseC. beijerinckii NCIMB 8052 | Milk dustC. beijerinckii NCIMB 8052 |
|---|---|---|---|---|
Acetone (g/L) | 2.84 ± 0.82 | 1.70 ± 0.07 | 3.12 ± 0.12 | 1.21 ± 0.11 |
Ethanol (g/L) | 1.39 ± 0.33 | 1.45 ± 0.21 | 1.33 ± 0.48 | 1.16 ± 0.21 |
Butanol (g/L) | 10.65 ± 0.69 | 7.25 ± 0.32 | 10.51 ± 0.65 | 5.80 ± 0.12 |
Total ABE (g/L) | 14.62 ± 1.74 | 10.25 ± 0.62 | 14.97 ± 1.25 | 8.15 ± 0.79 |
Initial glucose/lactose (g/L) | 60.89 ± 0.16 | 49.94 ± 1.61 | 60.86 ± 0.37 | 49.08 ± 1.26 |
Final glucose/lactose (g/L) | 20.44 ± 1.92 | 14.36 ± 1.66 | 20.24 ± 2.44 | 22.26 ± 1.43 |
Total glucose/lactose utilized (g/L) | 40.45 ± 1.77 | 34.72 ± 1.64 | 40.62 ± 2.08 | 27.67 ± 0.70 |
ABE yield (g/g of substrate) | 0.36 ± 0.01 | 0.30 ± 0.03 | 0.37 ± 0.02 | 0.29 ± 0.02 |
ABE productivity (g/L/h) | 0.25 ± 0.01 | 0.17 ± 0.01 | 0.31 ± 0.02 | 0.13 ± 0.01 |