From: Microbial synthesis of poly-γ-glutamic acid (γ-PGA) with fulvic acid powder, the waste from yeast molasses fermentation
Factorial level
A—glucose g/L
B—NaNO3g/L
C—KH2 PO4g/L
D—FA power g/L
E—l-glutamate g/L
F—citrate sodium g/L
1
60
12
0.5
20
5
2
70
16
0.7
30
10
3
80
0.9
40