Table 5. Supplementation of sieved stillage with yeast extract (YE) and molasses (5% and 10%); pH controlled with NaOH. |
|
5%M |
10%M |
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Parameter |
2.65 g/l YE |
5.31 g/l YE |
10.62 g/l YE |
2.65 g/l YE |
5.31 g/l YE |
10.62 g/l YE |
||
Glucose conversion [%] * |
98.8 |
98.8 |
100 |
39.7 |
35.3 |
67.7 |
||
Max LA [g/l] |
28.5 |
28.9 |
26.5 |
49.2 |
48.7 |
50.2 |
||
Maximal
number of LAB |
1.2 x 109 |
2.7 x 109 |
2.3 x 109 |
2.2 x 109 |
3.4 x 109 |
4.8 x 109 |
||
YP/S [g/g] * |
1.08 |
1.09 |
0.94 |
0.675 |
1.43 |
0.81 |
||
QP [g/(l·h)] * |
1.11 |
1.04 |
1.10 |
0.61 |
1.14 |
1.19 |
*Glucose conversion, YP/S and
QP were calculated for values obtained in the 24 hrs of the process. |
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