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Table 6 Comparison of the fermentation of S. marcescens MG1 and its derivatives

From: Metabolic engineering of Serratia marcescens MG1 for enhanced production of (3R)-acetoin

Strains

MG1

MG12

MG13

MG14

MG15

Fermentation time (h)

24

36

24

36

36

Consumed sucrose (g/l)

89.2 ± 0.07

87.9 ± 0.14

88.7 ± 0.15

86.3 ± 0.31

96.8 ± 0.65

OD600

17.76 ± 0.31

11.63 ± 0.56

17.73 ± 0.22

10.97 ± 0.42

7.28 ± 0.23

(2R,3R)-2,3-BD (g/l)

0.92 ± 0.31

2.96 ± 0.31

0.61 ± 0.31

1.55 ± 0.31

1.85 ± 0.13

(2S,3S)-2,3-BD (g/l)

0.67 ± 0.11

NDa

0.71 ± 0.09

ND

ND

meso-2,3-BD (g/l)

34.01 ± 1.21

1.28 ± 0.31

31.62 ± 0.98

1.25 ± 0.06

1.52 ± 0.05

(3R)-AC (g/l)

2.92 ± 0.08

19.79 ± 0.21

6.52 ± 0.08

21.04 ± 0.31

39.91 ± 1.35

(3S)-AC (g/l)

0.79 ± 0.05

0.21 ± 0.03

0.63 ± 0.06

ND

ND

Lactic acid

3.06 ± 0.03

8.05 ± 0.06

3.42 ± 0.03

8.15 ± 0.07

6.83 ± 0.05

Ethanol

0.7 ± 0.01

1.6 ± 0.01

0.6 ± 0.01

1.8 ± 0.01

1.5 ± 0.02

Succinic acid

1.9 ± 0.02

3.8 ± 0.03

2.1 ± 0.02

4.1 ± 0.04

2.6 ± 0.04

  1. aNot detected