Table 3 Summaries of fermentation results at highest ethanol concentration time points using Scheffersomyces (Pichia) stipitis
Substrate | Fermentation time, | Ethanol, | Sugar utilized, | Y p/s *, g/g | Cell growth rate, | Cell mass, | g/l at 106 h | pH at (f)h |
|---|---|---|---|---|---|---|---|---|
(f)h | g/l | % | g/l/h | g/l at (f)h | ||||
AX | 58 | 6.1 ± 0.0 | 100 ± 0.0 | 0.41 ± 0.02 | 0.043 | 2.81 ± 0.02 | 3.34 ± 0.02 | 5.5 ± 0.0 |
BGX | 36 | 10.4 ± 0.2 | 100 ± 0.0 | 0.39 ± 0.02 | 0.079 | 3.31 ± 0.00 | 4.02 ± 0.02 | 6.7 ± 0.0 |
CGX | 82 | 18.7 ± 1.1 | 88 ± 0.0 | 0.38 ± 0.02 | 0.049 | 3.16 ± 0.00 | 3.52 ± 0.09 | 6.2 ± 0.0 |
SGX | 76 | 8.2 ± 0.0 | 100 ± 0.0 | 0.39 ± 0.00 | 0.045 | 2.48 ± 0.00 | 2.69 ± 0.00 | 6.6 ± 0.0 |
SG | 36 | 10.1 ± 0.1 | 99 ± 0.8 | 0.37 ± 0.00 | 0.064 | 2.33 ± 0.05 | 2.72 ± 0.04 | 6.0 ± 0.3 |
SX | 82 | 8.5 ± 0.2 | 100 ± 0.0 | 0.33 ± 0.01 | 0.051 | 2.81 ± 0.03 | 2.94 ± 0.05 | 5.3 ± 0.1 |