Table 3 Biomass, GSH concentration, GSH content and molar ratio of γ-GC to GSH of various strains in flask cultures with or without addition of amino acid precursors (AA)

9.14 ± 0.48

98.75 ± 7.30

1.09 ± 0.14

6.74 ± 0.24

9.09 ± 0.13

186.77 ± 3.19

2.05 ± 0.06

10.29 ± 0.87

9.56 ± 0.26

145.72 ± 14.87

1.52 ± 0.14

9.72 ± 0.93

9.23 ± 0.32

111.82 ± 11.34

1.21 ± 0.09

8.58 ± 2.53

8.74 ± 0.44

104.24 ± 9.86

1.19 ± 0.08

7.34 ± 0.42

9.35 ± 0.38

206.70 ± 7.23

2.21 ± 0.02

11.26 ± 0.67

9.04 ± 0.20

190.57 ± 1.56

2.11 ± 0.05

10.92 ± 0.93

9.26 ± 0.07

216.50 ± 11.46

2.34 ± 0.13

9.97 ± 0.40

8.58 ± 0.09

252.33 ± 28.62

2.94 ± 0.36

9.65 ± 0.51

8.38 ± 0.37

316.77 ± 45.69

3.77 ± 0.43

9.50 ± 1.43