Skip to main content

Table 3 Effect of agitation speed on the metabolites of the K. pneumoniae GEM167ΔadhE/pBR-1,2PDO strain after fed-batch cultivation for 48 h

From: Production of 1,2-propanediol from glycerol in Klebsiella pneumoniae GEM167 with flux enhancement of the oxidative pathway

Agitation speed (rpm)

Maximum metabolite concentration

Glycerol consumption (g/L)

Cell growth (OD 600 nm)

1,2-PDO (mg/L)

2,3-BDO (g/L)

Lactic acid (g/L)

Acetic acid (g/L)

Succinate (g/L)

Ethanol (g/L)

1,3-PDO (g/L)

100

19.2 ± 1.3

3.0 ± 0.4

182.4 ± 28.1

2.0 ± 2.1

5.6 ± 1.1

2.1 ± 0.3

0.3 ± 0.1

2.8 ± 0.1

0.3 ± 0.1

200

31.3 ± 2.1

3.9 ± 0.3

326.9 ± 30.2

4.7 ± 1.3

17.9 ± 0.7

2.4 ± 0.2

0.8 ± 0.1

1.8 ± 0.1

0.2 ± 0.1

300

72.3 ± 2.7

7.7 ± 1.3

635.3 ± 21.4

17.9 ± 1.4

24.7 ± 1.1

7.5 ± 0.4

1.0 ± 0.2

1.7 ± 0.3

0.2 ± 0.1

400

158.0 ± 1.1

18.4 ± 0.7

731.0 ± 24.7

51.9 ± 2.3

16.5 ± 1.4

14.1 ± 0.6

1.2 ± 0.2

1.7 ± 0.1

0.2 ± 0.1