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Table 5 Levels of selected factors for orthogonal experimental design

From: Strain screening and optimization of biohydrogen production by Enterobacter aerogenes EB-06 from glycerol fermentation

Level

Factors

Cglycerol (g/L) [A]

pH [B]

C/N ratio [C]

1

5

5

5/2

2

10

6

5/3

3

15

7

5/4