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Table 4 D-xylose consumption, product formation (biomass, ethanol, and xylitol) and xylose reductase (XR) activity in anaerobic xylose fermentation (50 g L−1) with recombinant S. cerevisiae strains TMB 3422 and TMB 3504

From: Exploring xylose metabolism in Spathaspora species: XYL1.2 from Spathaspora passalidarum as the key for efficient anaerobic xylose fermentation in metabolic engineered Saccharomyces cerevisiae

Strains µ max (h−1) r s (g g CDW −1  h−1) Y x/s (g g−1) \(Y_{\text{p/s}}^{\text{et}}\) (g g−1) r et (g gCDW −1 h−1) \(Y_{\text{p/s}}^{\text{xy}}\) (g g−1) XR
NADH NADPH Ratio NADH/NADPH
TMB 3422 0.07 ± 0.00 0.58 ± 0.10 0.04 ± 0.01 0.34 ± 0.01 0.18 ± 0.01 0.21 ± 0.01 0.67 ± 0.03 0.94 ± 0.02 0.71 ± 0.04
TMB 3504 0.11 ± 0.00 0.76 ± 0.06 0.06 ± 0.00 0.40 ± 0.00 0.33 ± 0.02 0.10 ± 0.02 1.13 ± 0.08 0.96 ± 0.01 1.18 ± 0.08
  1. µ max specific growth rate, r s specific xylose consumption rate, r et specific ethanol production rate, Y x/s biomass yield; \(Y_{p/s}^{et}\) ethanol yield; \(Y_{p/s}^{xy}\) xylitol yield