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Table 3 Fermentation parameters in corn cob hydrolysate (detoxified and non-detoxified) at 30 °C in oxygen-deprived conditions

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

Strain Hydrolysate Xylosei (g/L) Xylosef (g/L) Ethanolf (g/L) Xylitolf (g/L) Glycerolf (g/L) Yet/sug (g/g) Yxyol/xyl (g/g) DCW (g/L)
PE-2∆GRE3 Detoxified corn cob  
XR/XDHa 26.7 3.43 ± 0.07 6.09 ± 0.05 10.3 ± 0.1 0.821 ± 0.013 0.261 ± 0.001 0.442 ± 0.005 2.50 ± 0.10
XR/XDH + XIb 26.7 3.46 ± 0.79 6.06 ± 0.28 9.91 ± 0.46 2.57 ± 1.82 0.260 ± 0.003 0.427 ± 0.034 2.80 ± 0.20
XIc 26.7 1.31 ± 0.07 11.2 ± 0.3 0.714 ± 0.029 0.880 ± 0.384 0.439 ± 0.012 0.028 ± 0.001 3.80 ± 0.50
CA11  
XR/XDHd 26.7 3.79 ± 0.17 4.93 ± 0.05 10.6 ± 0.1 1.47 ± 0.13 0.215 ± 0.004 0.462 ± 0.007 2.50 ± 0.10
XR/XDH + XIe 26.7 2.07 ± 0.05 9.23 ± 0.07 4.94 ± 0.05 0.571 ± 0.004 0.374 ± 0.004 0.200 ± 0.002 3.25 ± 0.15
XIf 26.7 0.438 ± 0.035 11.6 ± 0.2 0.958 ± 0.053 1.47 ± 0.03 0.440 ± 0.008 0.036 ± 0.002 4.60 ± 0.30
PE-2∆GRE3 Non-detoxified corn cob  
XR/XDHa 28.0 ± 0.1 7.16 ± 0.74 6.29 ± 0.80 5.46 ± 0.54 1.55 ± 0.05 0.272 ± 0.025 0.264 ± 0.036 1.77 ± 0.03
XR/XDH + XIb 28.0 ± 0.1 15.8 ± 2.6 4.04 ± 0.80 3.06 ± 0.09 0.956 ± 0.069 0.279 ± 0.004 0.262 ± 0.050 1.43 ± 0.17
XIc 28.0 ± 0.1 25.3 ± 0.5 1.16 ± 0.15 0.275 ± 0.026 0.393 ± 0.076 0.243 ± 0.057 0.107 ± 0.011 1.07 ± 0.07
CA11  
XR/XDHd 28.6 ± 0.0 10.9 ± 0.5 4.83 ± 0.35 5.15 ± 0.04 2.03 ± 0.13 0.244 ± 0.008 0.291 ± 0.006 2.23 ± 0.03
XR/XDH + XIe 28.6 ± 0.0 8.33 ± 1.05 8.55 ± 0.22 1.44 ± 0.08 1.20 ± 0.22 0.384 ± 0.013 0.0716 ± 0.0074 2.40 ± 0.00
XIf 28.6 ± 0.0 25.8 ± 0.3 1.34 ± 0.10 0.275 ± 0.047 0.608 ± 0.210 0.279 ± 0.013 0.0977 ± 0.0073 1.60 ± 0.27
  1. Fermentation time course was 73 and 96 h for detoxified and non-detoxified hydrolysate, respectively. Xylosei and Xylosef are the xylose concentrations at the initial and final time of fermentation, respectively. Ethanolf, Xylitolf and Glycerolf are the ethanol, xylitol and glycerol concentrations at the final time, respectively. Yet/sug is the ethanol yield from initial sugar calculated at final time of fermentation. Yxyol/xyl is the xylitol yield from xylose calculated at the final time of fermentation. DCW is the dry cell weight at final time. Detoxified Corn Cob—Xylosef: d,e**; d,f***; e,f**. Ethanolf: a,c**; b,c**; d,e***; d,f****; e,f**. Xylitolf: a,c***; b,c***; d,e****; d,f****; e,f****. Glyferolf: d,e**; e,f**. Yet/xyl: a,c***; b,c***; d,e***; d,f***; e,f**. Yxyol/xyl: a,c**; b,c**; d,e****; d,f****; e,f***. DFW: d,f*; e,f*. Non-detoxified Corn Cob- Xylosef: a,c**; b,c*; d,f**; e,f***. Ethanolf: a,c*; d,e**; d,f**; e,f***. Xylitolf: a,b*; a,c**; b,c*; d,e****; d,f****; e,f**. Glycerolf: a,b*; a,c**; b,c*; d,f*. Yet/xyl: d,e**; e,f*. Yxyol/xyl: d,e***; d,f***. DCW: a,c*