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Fig. 1 | Biotechnology for Biofuels

Fig. 1

From: The diversity and specificity of the extracellular proteome in the cellulolytic bacterium Caldicellulosiruptor bescii is driven by the nature of the cellulosic growth substrate

Fig. 1

Growth of C. bescii on complex medium with different a soluble or b insoluble components of plant biomass. Cultivation was performed in 1-L closed bottles filled with 400 mL medium, under a N2/CO2 (80/20) atmosphere, with glucose (open squares), cellobiose (open circles), xylose (open triangles), crystalline cellulose (closed circles), birchwood xylan (closed triangles), and on unpretreated switchgrass (crosses), at substrate concentrations of 5 g L−1. After cultures reached the mid-to-late exponential growth phase (7.0–1.5 × 108 mL−1; indicated by arrows), supernatants containing the extracellular proteins were separated from the cells by centrifugation. Representative growth curve shown for each substrate

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