Table 3. Cellulose Pulp Structural Composition after Pretreatment with [DMBA][HSO4] and the Enzymatic Hydrolysis Glucose Yield.
| # | T (°C) | t (min) | C(wt %) | log R0* | log R0 | cellulose pulp yield (wt %) | glucan | hemicellulose | lignina | delignification (%) | glucose yield (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 180 | 40 | 80 | 2.32 | 3.96 | 27.1 | 16.8 | 0 | 10.3 | 62.7 | 64.5 |
| 2 | 180 | 30 | 90 | 2.31 | 3.83 | 34.8 | 23.1 | 0 | 11.7 | 65.01 | 61.8 |
| 3 | 180 | 30 | 70 | 2.15 | 3.83 | 39.1 | 24.2 | 0 | 14.9 | 56.3 | 77.7 |
| 4 | 170 | 40 | 90 | 2.14 | 3.66 | 37.8 | 25.6 | 0 | 12.2 | 59.4 | 66.7 |
| 5 | 180 | 20 | 80 | 2.02 | 3.66 | 42 | 34.3 | 0 | 7.8 | 70.3 | 55.2 |
| 6 | 170 | 40 | 70 | 1.98 | 3.66 | 43.8 | 30.1 | 1.6 | 12.1 | 58.6 | 68.6 |
| 7 | 170 | 30 | 80 | 1.90 | 3.54 | 43.4 | 39.1 | 0.7 | 3.6 | 88.10 | 94.9 |
| 8 | 170 | 30 | 80 | 1.90 | 3.54 | 43.4 | 39.8 | 0.6 | 3 | 88.7 | 95.1 |
| 9 | 170 | 30 | 80 | 1.90 | 3.54 | 43.9 | 39.7 | 0.7 | 3.2 | 89.1 | 94.1 |
| 10 | 170 | 20 | 90 | 1.84 | 3.36 | 50.5 | 37.6 | 0 | 12.9 | 73.7 | 90.1 |
| 11 | 160 | 40 | 80 | 1.73 | 3.37 | 44.6 | 34.2 | 1.3 | 9.1 | 57.9 | 80.5 |
| 12 | 160 | 30 | 90 | 1.72 | 3.24 | 47.5 | 39.1 | 0.8 | 7.5 | 68.8 | 87.6 |
| 13 | 170 | 20 | 70 | 1.68 | 3.36 | 60.7 | 38.2 | 2.9 | 19.7 | 34.1 | 32.7 |
| 14 | 160 | 30 | 70 | 1.56 | 3.24 | 57.1 | 36.8 | 3.6 | 16.7 | 38.4 | 44.4 |
| 15 | 160 | 20 | 80 | 1.43 | 3.07 | 64.6 | 42.2 | 4 | 18.4 | 40.4 | 23.1 |
| UBb | 44.5 | 25 | 29.9 | 1.97 |
Sum of acid-insoluble lignin (AIL) and acid-soluble lignin (ASL) obtained from compositional analysis.
Untreated pine softwood.