Table 6. Supplementation of sieved stillage with yeast extract (YE) and molasses (5% and 10%); pH controlled with NH₄OH.

5%M

10%M

Parameter

1.77g/l YE

3.54 g/l YE

7.08 g/l YE

1.77 g/l YE

3.54 g/l YE

7.08 g/l YE

Glucose conversion [%]*

100

100

100

51.1

82.7

99.8

Max LA [g/l]

33.1
[24]

28.4
[36 h]

28.2
[24 h]

39.9
[48 h]

47.6
[36 h]

49.8
[24 h]

Maximal number of
LAB [cfu/ml]

1.3 x 10¹⁰
[24 h]

0.9 x 10¹⁰
[24 h]

1.3 x 10¹⁰
[24 h]

1.6 x 10¹⁰
[48 h]

1.3 x 10¹⁰
[48 h]

0.99 x 10¹⁰
[48 h]

Y_P/S [g/g]*

0.96
(96%)^a

1.06
(106%)^a

1.02
(102)^a

1.05
(53%)^a

0.845
(70%)^a

0.947
(95%)^a

Q_P [g/(l·h)]*

1.38

1.18

1.18

1.24

1.55

2.08