Table 2 Composition of the solid and liquid fractions of the STEX + HEX-pretreated materials, HEX treated at 150 °C for 8 h (STEX + HEX-150/8) and at 190 °C for 4 h (STEX + HEX-190/4)
| Â | Standard conditions | Modified conditions | ||
|---|---|---|---|---|
SFSTEX+HEX150/8 (wt%) | LFSTEX+HEX150/8 (g/L) | SFSTEX+HEX190/4 (wt%) | LFSTEX+HEX190/4 (g/L) | |
Carbohydrates, thereof | 84.1 ± 2.2 | na | 83.9 ± 4.2 | na |
 Glucan/glucose | 75.0 ± 1.3 | 0.1 ± 0.0 | 77.6 ± 2.7 | 0.2 ± 0.0 |
 Xylan/xylose | 6.0 ± 0.1 | 0.8 ± 0.0 | 3.6 ± 0.1 | 3.2 ± 0.0 |
 Arabinan/arabinose | BDL | BDL | BDL | BDL |
 Galactan/galactose | BDL | 0.1 ± 0.0 | BDL | 0.2 ± 0.0 |
 Mannan/mannose | 3.0 ± 0.9 | 0.2 ± 0.0 | 2.7 ± 1.4 | 0.4 ± 0.0 |
Lignin, thereof | 13.7 ± 0.6 | na | 13.5 ± 0.2 | na |
 Acid-soluble | 2.2 ± 0.2 | na | 1.6 ± 0.1 | na |
 Acid-insoluble | 11.6 ± 0.4 | na | 11.5 ± 0.0 | na |
Ash | BDL | na | BDL | na |
Recovery | 97.8 ± 2.2 | na | 97.4 ± 4.0 | na |