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Fig. 4 | Biotechnology for Biofuels and Bioproducts

Fig. 4

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

Fig. 4

Effect of pH on the cell growth and metabolite production by K. pneumoniae GEM167ΔadhE/pBR-1,2PDO. A glycerol consumption; B growth (OD600 nm); C 1,2-PDO concentration; D lactic acid concentration; E acetic acid concentration; F 1,3-PDO concentration; G 2,3-BDO concentration; H ethanol concentration; I succinate concentration. Cultivation at 3 pH values was in a 5-L jar fermenter (37 °C, 400 rpm, and 0.5 vvm) for 48 h with glycerol as carbon source. Black circles, pH 6; red triangles, pH 7; blue diamonds, pH 8

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