Table 4 Sugar yields after enzymatic hydrolysis a
From: Analysis, pretreatment and enzymatic saccharification of different fractions of Scots pine
Untreated | |||||
|---|---|---|---|---|---|
Fraction | Arabinose | Galactose | Glucose | Mannose | Xylose |
Juvenile heartwood | 0.2 ± 0.1 | 0.4 ± 0.1 | 3.0 ± 0.3 | 0.7 ± 0.1 | 0.3 ± 0.1 |
Mature heartwood | 0.2 ± 0.1 | 0.4 ± 0.1 | 3.3 ± 0.3 | 0.8 ± 0.1 | 0.3 ± 0.1 |
Juvenile sapwood | 0.5 ± 0.1 | 0.7 ± 0.1 | 4.1 ± 0.2 | 0.9 ± 0.2 | 0.4 ± 0.2 |
Mature sapwood | 0.2 ± 0.2 | 0.4 ± 0.2 | 3.3 ± 0.1 | 0.9 ± 0.2 | 0.3 ± 0.2 |
Bark | 0.2 ± 0.1 | 0.4 ± 0.1 | 6.4 ± 0.6 | 0.8 ± 0.1 | 0.3 ± 0.1 |
Top parts | 0.2 ± 0.1 | 0.4 ± 0.1 | 3.0 ± 0.3 | 0.7 ± 0.1 | 0.3 ± 0.1 |
Knotwood | 0.2 ± 0.1 | 0.4 ± 0.1 | 3.3 ± 0.3 | 0.8 ± 0.1 | 0.3 ± 0.1 |
Pretreatment severity: mild | |||||
Fraction | Arabinose | Galactose | Glucose | Mannose | Xylose |
Juvenile heartwood | n.d.b | 0.58 ± 0.1 | 6.9 ± 2.6 | 0.7 ± 0.1 | n.d. |
Mature heartwood | n.d. | 0.62 ± 0.1 | 8.4 ± 1.3 | 0.8 ± 0.1 | n.d. |
Juvenile sapwood | n.d. | 0.65 ± 0.1 | 8.5 ± 1.0 | 0.8 ± 0.1 | n.d. |
Mature sapwood | n.d. | 0.64 ± 0.1 | 10.6 ± 0.7 | 0.9 ± 0.2 | n.d. |
Bark | n.d. | 0.63 ± 0.1 | 8.1 ± 1.3 | 0.8 ± 0.1 | n.d. |
Top parts | n.d. | 0.62 ± 0.1 | 10.5 ± 2.3 | 0.8 ± 0.1 | n.d. |
Knotwood | n.d. | 0.61 ± 0.1 | 10.6 ± 2.4 | 0.8 ± 0.1 | n.d. |
Pretreatment severity: medium | |||||
Fraction | Arabinose | Galactose | Glucose | Mannose | Xylose |
Juvenile heartwood | n.d. | n.d. | 10.1 ± 1.8 | n.d. | n.d. |
Mature heartwood | n.d. | n.d. | 8.3 ± 0.7 | n.d. | n.d. |
Juvenile sapwood | n.d. | n.d. | 12.3 ± 1.0 | n.d. | n.d. |
Mature sapwood | n.d. | n.d. | 12.1 ± 2.4 | n.d. | n.d. |
Bark | n.d. | n.d. | 7.5 ± 0.9 | n.d. | n.d. |
Top parts | n.d. | n.d. | 9.2 ± 2.2 | n.d. | n.d. |
Knotwood | n.d. | n.d. | 10.5 ± 1.4 | n.d. | n.d. |
Pretreatment severity: severe | |||||
Fraction | Arabinose | Galactose | Glucose | Mannose | Xylose |
Juvenile heartwood | n.d. | n.d. | 18.0 ± 1.4 | n.d. | n.d. |
Mature heartwood | n.d. | n.d. | 15.8 ± 2.3 | n.d. | n.d. |
Juvenile sapwood | n.d. | n.d. | 17.9 ± 2.5 | n.d. | n.d. |
Mature sapwood | n.d. | n.d. | 14.6 ± 3.0 | n.d. | n.d. |
Bark | n.d. | n.d. | 14.7 ± 0.3 | n.d. | n.d. |
Top parts | n.d. | n.d. | 15.9 ± 2.0 | n.d. | n.d. |
Knotwood | n.d. | n.d. | 16.6 ± 0.5 | n.d. | n.d. |