Table 2 Range and levels of the variables used for CCD.

From: Enhanced bioconversion of kitchen food waste into aquaculture feed using a mixed culture of Bacillus licheniformis and Yarrowia lipolytica

Variables

Factors

Range and levels

− 2

− 1

0

1

2

A

Strain ratio (O57: L58 v/v)

1:1

2:1

3:1

4:1

5:1

B

Inoculation amount (%)

6

8

10

12

14

C

Temperature (℃)

31

34

37

40

43

D

Fermentation Time (h)

72

84

96

108

120

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