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Table 4 Metabolite analysis of culture broths of the K. pneumoniae ΔldhA mutant by repeated fed-batch fermentation at intervals of 24 h using crude glycerol as a substrate

From: Efficient production of 1,3-propanediol from crude glycerol by repeated fed-batch fermentation strategy of a lactate and 2,3-butanediol deficient mutant of Klebsiella pneumoniae

Cycle number 1,3-PDO (g/L) 2,3-BDO (g/L) Ethanol (g/L) Acetate (g/L) Succinate (g/L) 1,3-PDO (g/L/h)
1 79.9 40.5 6.8 2.2 10.5 3.33
2 80.1 39.5 6.5 2.3 11.2 3.34
3 79.4 40.7 6.1 1.8 12.1 3.31
4 80.5 42.1 7.4 1.7 11.7 3.35
5 79.9 39.2 6.9 1.9 10.9 3.33