Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2002 by Universidad Católica de Valparaíso -- Chile
Vol. 5 No. 2, Issue of August 15, 2002
 


Table 5.

Kinetic relations of recycling fed-batch culture for enhanced citric acid production by Aspergillus niger NGGCB101.


Sampling vs. fed-batch

Growth yield coefficients (g/g)

Volumetric rates (g/l/h)

Specific rate constants (g/g/h)

Significance level
< p >

Liters

%

Yp/s

Yp/x

Qp

Qs

qs

qx

Control

1.0

2.0

3.0

4.0

5.0

-

11.50

22.50

33.50

44.50

55.50

0.9640.03

0.9870.02

0.7100.04

0.8780.04

1.6610.02

0.3030.04

5.4440.01

5.7450.01

6.0810.02

7.2230.02

8.6070.01

5.0040.02

0.2990.02

0.6780.02

0.6010.02

0.8170.02

0.9430.02

0.5980.03

0.9220.04

1.2430.02

0.9300.02

1.0090.02

1.7990.02

0.9020.02

0.0750.03

0.0980.02

0.1280.02

0.1350.02

0.2380.03

0.0970.05

0.0410.02

0.0520.02

0.0850.03

0.1080.02

0.1130.02

0.0640.04

S

-

-

S

HS

-

LSD

0.0345

0.321

0.112

0.212

0.678

0.542

 

indicates standard deviation among replicates. p indicates probability significance level. HS denotes that the values are highly significant while S is for only significant values. LSD is for least significant difference. The values differ significantly at p < 0.020.

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