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Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2011 by Universidad Católica de Valparaíso -- Chile
Vol. 14 No. 2, Issue of April 15, 2011
 

Table 2. Supplementation of filtered stillage.



Composition of the medium*

Glucose
conversion
[%]

Max LA
[g/l]

Maximal number of
LAB [cfu/ml]

YP/S
[g/g]**

QP
[g/(l·h)]**

Stillage

-

0.98

4.8 x 105

-

-

Stillage + Glu

12.7
[48 h]

2.9
[24 h]

4.4 x 107

0.89

0.08

Stillage + Glu + Salts

78.9
[36 h]

14.8
[36 h]

9 x 107

0.99

0.62

Stillage + Glu + Salts + P

100
[24 h]

19.5
[24 h]

4 x 109

1.11

0.81

Stillage + Glu + Salts + YE

100
[12 h]

19.6
[24 h]

4.4 x 109

1.04

0.82

Stillage + Glu + Salts + YE + P

100
[12 h]

20.5
[12 h]

31.8 x 109

1.06

0.85

Stillage + M

63.6
[48 h]

15.5
[48 h]

8.9 x 108

0.84

0.64

*YE = Yeast Extract (5.31 g/l), Glu = Glucose (2%), M = Molasses (5%), Salts (5 g/l K2HPO4; 0.75 g/l MgSO4), P = Peptone (5.08 g/l).
**Glucose conversion, YP/S and QP were calculated for values obtained in the 24hrs of the process.