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Figure 1 | Microbial Cell Factories

Figure 1

From: A comprehensive and quantitative review of dark fermentative biohydrogen production

Figure 1

A graphical overview is shown irrespective of the utilization of the carbon substrate, medium composition and cultivation conditions of the HER of Clostridiaceae (A), Enterobacteriaceae (B) and Thermoanaerobacterales (Family III) (C) plotted against the Y (H2/S) . The qH 2 of Clostridiaceae (D), Enterobacteriaceae (E) and Thermoanaerobacterales (Family III) (F) is shown in relation to the Y (H2/S) . It is indicated that Clostridiaceae and Enterobacteriaceae perform better than Thermoanaerobacterales (Family III) in respect to the volumetric productivity. The qH2 for Clostridiaceae and Thermoanaerobacterales (Family III) is shown to be higher than for Enterobacteriaceae. Regarding the substrate conversion efficiency (Y(H2/S)) the following ranking is indicated: Thermoanaerobacterales (Family III) >  Clostridiaceae >  Enterobacteriaceae.

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