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Table 3 Parameters at aerobic growth of K. marxianus DSM 5422 in media with various sources of nitrogen with initial pH adjustment

From: Efficient growth of Kluyveromyces marxianus biomass used as a biocatalyst in the sustainable production of ethyl acetate

Parameter

Added source of nitrogen

 

No supplement

(NH 4 ) 2 SO 4

(NH 4 ) 2 CO 3

Urea

Supplied N

[mg/L]

0

106

146

117

NH4-N + urea-N

[mg/L]

7

113

153

124

Initial pH value

[−]

6.50

6.50

6.50

6.50

μ at t = 14 h

[h−1]

0.59

0.59

0.59

0.59

Final sugar

[g/L]

1.03

0.00

0.00

0.00

Final biomass

[g/L]

0.47

1.29

1.25

1.44

Final pH value

[−]

4.29

2.43

2.54

6.45

  1. The whey and the sources of nitrogen were autoclaved separately; the data belong to the experiment shown in Figure 2; the final parameters were measured after a total of 40 h of cultivation.
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Energy, Sustainability and Society

ISSN: 2192-0567

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