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Table 1 Fermentation parameters in YPX medium at 30 °C

From: Xylose fermentation efficiency of industrial Saccharomyces cerevisiae yeast with separate or combined xylose reductase/xylitol dehydrogenase and xylose isomerase pathways

Strain Xylosei (g/L) Xylosef (g/L) Ethanolmax (g/L) Xylitolmax (g/L) Yet/xyl24 h (g/g) Yxyol/xyl24 h (g/g) DCW (g/L)
PE-2∆GRE3
XR/XDHa 52.9 ± 2.5 0.205 ± 0.001 13.0 ± 0.3 16.7 ± 0.1 0.189 ± 0.020 0.324 ± 0.029 11.1 ± 0.8
XR/XDH + XIb 52.9 ± 2.5 0.235 ± 0.001 12.7 ± 0.0 14.3 ± 0.2 0.222 ± 0.012 0.346 ± 0.022 13.8 ± 2.3
XIc 52.9 ± 2.5 0.215 ± 0.031 19.3 ± 0.4 1.19 ± 0.04 0.401 ± 0.031 0.0167 ± 0.0002 10.8 ± 0.5
CA11
XR/XDHd 51.3 ± 2.2 0.543 ± 0.010 6.73 ± 0.19 18.2 ± 0.2 0.120 ± 0.002 0.376 ± 0.014 14.1 ± 0.5
XR/XDH + XIe 53.6 ± 1.0 0.556 ± 0.008 13.1 ± 0.3 2.55 ± 0.14 0.232 ± 0.004 0.0287 ± 0.0002 13.1 ± 0.8
XIf 55.0 ± 0.4 2.16 ± 0.06 11.5 ± 0.0 3.23 ± 0.05 0.230 ± 0.005 0.0261 ± 0.0008 12.1 ± 0.0
  1. Fermentation time was 72 h. Xylosei and Xylosef are the xylose concentrations at the initial and final time of fermentation, respectively. Ethanolmax is the maximal ethanol concentration reached during the experimental time frame. Xylitolmax is the maximal xylitol concentration reached during the experimental time frame. Yet/xyl24 h is the ethanol yield from xylose calculated at 24 h of fermentation. Yxyol/xyl24 h is the xylitol yield from xylose calculated at 24 h of fermentation. DCW is the dry cell weight at final time. Xylosef: d,f***; e,f***. Ethanolmax: a,c***; b,c***; d,e***; d,f***; e,f*. Xylitolmax: a,b**; a,c****; b,c****; d,e****; d,f****. Yet/xyl24 h: a,c*; b,c*; d,e***; d,f***. Yxyol/xyl24 h: a,c**; b,c**; d,e***; d,f***. DCW: b,c*