Table 1 Direct fermentation of different starchy materials to ABE (30 g/L starch)
Type of starch (30 g/L) | Final pH | DCW (g/L) | Acetone (g/L) | Butanol (g/L) | Ethanol (g/L) | ABE (g/L) | YABE/Starch (g/g) | YButanol/starch (g/g) |
|---|---|---|---|---|---|---|---|---|
Sago starch | 4.62 | 2.09 | 1.58 | 5.24 | 0.89 | 7.71 | 0.257 | 0.175 |
Tapioca starch | 4.44 | 2.08 | 1.30 | 3.11 | 0.77 | 5.18 | 0.173 | 0.104 |
Rice starch | 4.52 | 1.96 | 1.80 | 4.17 | 0.78 | 6.75 | 0.225 | 0.139 |
Corn starch | 4.62 | 2.20 | 1.53 | 4.08 | 0.78 | 6.40 | 0.213 | 0.136 |
Potato starch | 4.41 | 1.94 | 0.90 | 2.51 | 0.76 | 4.17 | 0.139 | 0.089 |
TYA(glucose 30 g/L) | 4.63 | 2.16 | 1.30 | 4.33 | 0.90 | 6.53 | 0.218 | 0.144 |