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Table 5 Analysis of consumed substrate and anaerobic metabolites after 44 h of cultivation of IAM1183-CDE/N and wild-type IAM1183 in 5-L fermenter

From: Impairment of NADH dehydrogenase and regulation of anaerobic metabolism by the small RNA RyhB and NadE for improved biohydrogen production in Enterobacter aerogenes

End product

IAM1183

IAM1183-CDE/N

Change trend

Percent change (%)

Glucose consumption (%)

79.47

97.43

22.26

Residual sugar (g/L)

3.08

0.33

87.34

Hydrogen (H2) (L)

3.110

6.060

94.85

Succinate (mM)

1.02

3.16

209.8

Lactate (mM)

24.78

26.12

5.400

Acetate (mM)

15.33

11.47

25.17

Formate (mM)

1.260

0.790

37.30

Ethanol (mM)

10.54

12.28

16.50

Citric acid (mM)

1.930

1.750

9.330

Acetoin (mM)

20.73

18.58

10.37

2,3-Butanediol (mM)

6.380

7.740

21.31