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Table 1 Results of orthogonal experiment

From: Microbial synthesis of poly-γ-glutamic acid (γ-PGA) with fulvic acid powder, the waste from yeast molasses fermentation

Treatment A B C D E F γ-PGA (g/L) OD600
1 1 1 1 1 1 1 15.39 4.91
2 1 2 2 2 2 2 22.08 3.04
3 1 3 3 3 3 3 27.14 2.15
4 2 1 1 2 2 3 22.51 5.27
5 2 2 2 3 3 1 26.83 5.52
6 2 3 3 1 1 2 25.53 3.61
7 3 1 2 1 3 2 29.86 6.88
8 3 2 3 2 1 3 26.69 7.03
9 3 3 1 3 2 1 22.78 7.38
10 1 1 3 3 2 2 17.69 4.98
11 1 2 1 1 3 3 33.06 3.00
12 1 3 2 2 1 1 21.68 4.42
13 2 1 2 3 1 3 19.09 5.20
14 2 2 3 1 2 1 20.87 4.12
15 2 3 1 2 3 2 29.21 4.45
16 3 1 3 2 3 1 24.31 7.01
17 3 2 1 3 1 2 22.23 7.20
18 3 3 2 1 2 3 35.54 4.43
K1 138.44 128.86 145.19 160.25 130.62 131.87   
K2 144.04 151.76 155.08 146.48 141.48 146.60   
K3 161.42 161.88 142.24 135.77 170.41 164.04   
k1 23.07 21.48 24.20 26.71 21.77 21.98   
k2 24.01 25.29 25.85 24.41 23.58 24.43   
k3 26.90 26.98 23.71 22.63 28.40 27.34   
R 3.83 5.50 2.14 4.08 6.63 5.36