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
18.30
20
22.5
25
26.7
Sea salt
13.72
15
16.88
18.75
20.03