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Table 1 Coded and uncoded values of independent variables used in the central composite design (CCD) design

From: Biodegradation optimization and metabolite elucidation of Reactive Red 120 by four different Aspergillus species isolated from soil contaminated with industrial effluent

Variables

Range of variables and level

Step change value (ΔZi)

−2

−1

0

+1

+2

Glucose (g/L)

2

6

10

14

16

4

Ammonium sulfate (g/L)

0.5

1

1.5

2

2.5

0.5

pH

5.0

5.5

6.0

6.5

7.0

0.5

Temperature (°C)

20

25

30

35

40

5

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Annals of Microbiology

ISSN: 1869-2044

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