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Table 1 Effect of some representative corn steep liquor (CSL) concentrations on the kinetics of crude protein production parameters in a continuously stirred tank reactor (CSTR)* by mixed culture on mixed substrate medium containing 80 g sugars/L (pH 6.0) fortified with different concentrations of CSL in 5-L fermentor. Samples were collected periodically and data collected as described in Materials and methods. Values are means ± standard deviation of n  = 3 experiments. Values with the same lower case letters are significantly different at P < 0.05. Q CP Volumetric rate of crude protein formation, Y CP/S substrate consumption yield coefficient with respect to growth, Y CP/X substrate consumption yield coefficient with respect to crude protein synthesis, q CP specific rate of protein formation

From: Production of microbial biomass protein from mixed substrates by sequential culture fermentation of Candida utilis and Brevibacterium lactofermentum

Kinetic parameter

CSL concentration (g/L)

P-value

25

30

35

40

QCP (g/L h)

1.25 ± 0.04 c

1.55 ± 0.05 a

1.49 ± 0.04 b

1.42 ± 0.04 b

0.0001

YCP/S (g/g substrate)

0.49 ± 0.02

0.56 ± 0.03

0.5 2 ± 0.03

0.50 ± 0.03

0.0613

YCP/X (g/g cells)

1.00 ± 0.03 b

1.14 ± 0.04 a

1.13 ± 0.06 a

1.10 ± 0.04 b

0.0134

qCP (g/g h)

0.37 ± 0.02

0.42 ± 0.03

0.42 ± 0.02

0.41 ± 0.02

0.0817

  1. *CSTR run under 1 vv -1 m -1 aeration rate, and 300 rpm stirrer speed