Table 1 Composition of pretreated solids at different pretreatment conditions
Pretreatment conditions | Biomass solubilization (% of initial biomass) | Cellulose (% w/w) | Hemicellulose (% w/w) | Lignin (% w/w) | ||
|---|---|---|---|---|---|---|
Ethanol effect | 30 min | 50% v/v | 47.9 | 65.9 (1.2%) | 15.1 (74.8%) | 6.7 (81.2%) |
60% v/v | 48.9 | 67.1 (1.3%) | 21.0 (65.7%) | 7.1 (80.5%) | ||
70% v/v | 41.5 | 61.7 (0.0%) | 21.9 (59.0%) | 8.7 (72.6%) | ||
Time effect | 60% v/v | 15 min | 44.7 | 66.3 (0.0%) | 22.0 (61.1%) | 7.8 (77.0%) |
30 min | 48.9 | 67.1 (1.3%) | 21.0 (65.7%) | 7.1 (80.5%) | ||
60 min | 40.0 | 60.7 (0.0%) | 19.1 (63.4%) | 13.2 (57.5%) | ||
Catalyst effect | 15 min—60% v/v ethanol | 0% | 44.7 | 66.3 (0.0%) | 22.0 (61.1%) | 7.8 (77.0%) |
0.2% | 45.0 | 61.1 (3.2%) | 25.8 (54.5%) | 7.4 (78.2%) | ||
1% | 63.1 | 77.9 (17.2%) | 8.9 (89.5%) | 7.0 (86.2%) | ||