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Figure 8 | Biotechnology for Biofuels

Figure 8

From: Evolved strains of Scheffersomyces stipitis achieving high ethanol productivity on acid- and base-pretreated biomass hydrolyzate at high solids loading

Figure 8

Ratio of performance improvement of tolerant isolate compared to parent. The performances of superior tolerant isolates are summarized relative to the control parent strain NRRL Y-7124 for each formulation of PSGHL (A-D). Performances were assessed in terms of xylose uptake rate (blue bars representing ratios of isolate to parent) and ethanol yield per sugar supplied (green bars representing ratios of isolate to parent). Isolates from ethanol-challenged continuous cultures on xylose were tested in this screen using PSGHL supplemented with glucose (C and D) in order to allow formation of significant ethanol to more strongly challenge induction of xylose utilization enzymes and metabolism of xylose.

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