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Fig. 7 | Bioresources and Bioprocessing

Fig. 7

From: Strain engineering and bioprocessing strategies for biobased production of porphobilinogen in Escherichia coli

Fig. 7

Bioreactor cultivation of DMH, DMH∆sdhA, and DMH-D9∆sdhA for PBG biosynthesis under microaerobic conditions. Time profiles of cell density (OD600), glycerol consumption and metabolite production profiles, acetate and PBG percentage yields, and extracellular accumulation of porphyrins (represented by the absorbance readings of the Soret peak (A405) and Q-band (A495)) are shown. The percentage yields of acetate/PBG and absorbance readings of porphyrin compounds are calculated/measured based on the consumed glycerol at end of cultivation. (I) DMH, (II) DMH∆sdhA, (III) DMH-D9∆sdhA. All values are reported as means ± SD (n = 2)

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