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Table 3 Metabolite analysis of culture broths of the K. pneumoniae ΔldhA mutant grown for 24 h by fed-batch fermentation using crude glycerol as a substrate with different medium replacement ratios

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

Medium replacement ratio (%) 1,3-PD (g/L) 2,3-BD (g/L) Ethanol (g/L) Acetate (g/L) Succinate (g/L) 1,3-PD (g/L/h)
5 (1:20) 68.8 30.5 6.5 2.3 8.2 2.86
10 (1:10) 79.5 39.5 6.1 1.8 11.8 3.31
20 (1:5) 78.1 40.7 7.5 1.7 12.5 3.25