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Table 3 Variables range of CCD experiments

From: Enhancing docosahexaenoic acid production of Schizochytrium sp. by optimizing fermentation using central composite design

Variable

Unit

Level

 − 2

 − 1

0

1

2

Glucose

g/L

91.48

100

112.5

125

133.52

Sodium glutamate

g/L

18.30

20

22.5

25

26.7

Sea salt

g/L

13.72

15

16.88

18.75

20.03