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Table 1 Solid and sugar yields of pretreated corn stover at different pretreatment conditions

From: Alkaline twin-screw extrusion pretreatment for fermentable sugar production

Pretreatment conditions   Sugar yieldb(%)
NaOH loading (g/g biomass) Preservation time (hour) Solid yielda Glucose Xylose Total sugar
0.04 0 77.3 33.6 13.3 26.4
1 73.8 41.7 22.8 35.0
2 72.2 42.1 22.0 35.0
3 72.1 41.7 25.8 36.1
10 70.0 41.2 36.2 39.5
0.06 0 70.2 57.3 45.5 53.1
1 65.8 82.0 69.4 77.6
2 63.0 79.8 68.8 75.9
3 62.8 85.1 69.7 79.7
10 62.2 86.2 69.2 80.2
0.08 0 61.7 75.4 58.0 69.3
1 59.2 85.0 63.8 77.5
2 57.8 84.7 65.7 78.0
3 57.4 85.5 62.9 77.5
10 57.0 86.6 63.4 78.4
0.1 0 54.8 79.6 49.7 69.1
1 53.5 85.5 51.4 73.4
2 53.1 83.4 50.8 71.9
3 52.5 83.1 49.6 71.3
10 52.2 84.7 47.1 71.4
  1. a solid yield = (Pretreated biomass (g)/Original biomass (g)) × 100; b glucose yields% = M glucose in enzymatic hydrolyzate × 0.9/M glucan in original biomass, xylose yields% = M xylose in enzymatic hydrolyzate × 0.88/M xylan in original biomass, total sugar yield% = (M glucose in enzymatic hydrolyzate × 0.9+ M xylose in enzymatic hydrolyzate × 0.88)/( M glucan in original biomass + M xylan in original biomass). M is the mass of sugar (g). Data represented are the averages of the results from duplicated experiments.