Table 1 Chemical compositions of poplar after pretreated with 40%–100% HPAA (v/v) at 60 °C for 2 h, expressed as percentage of dry matter
Pretreatment label | Glucan (%) | Xylan (%) | Lignin (%) | Acetyl (%) | Solid recovery (%) | Removal | ||
|---|---|---|---|---|---|---|---|---|
Glucan (%) | Xylan (%) | Lignin (%) | ||||||
Raw | 43.4 ± 0.0 | 17.4 ± 0.2 | 27.9 ± 0.3 | 3.7 ± 0.2 | – | – | – | – |
HPAA40 | 47.4 ± 0.1 | 15.7 ± 0.3 | 26.5 ± 0.4 | 5.1 ± 0.3 | 90.2 | 1.3 | 18.7 | 14.3 |
HPAA60 | 55.0 ± 0.2 | 18.1 ± 0.1 | 19.8 ± 0.2 | 5.8 ± 0.3 | 72.4 | 8.3 | 24.4 | 48.6 |
HPAA80 | 63.7 ± 0.7 | 20.0 ± 0.3 | 7.7 ± 0.0 | 5.5 ± 0.7 | 62.7 | 7.9 | 27.7 | 82.8 |
HPAA100 | 70.8 ± 0.6 | 19.5 ± 0.2 | 4.5 ± 0.5 | 5.9 ± 0.7 | 55.1 | 10.1 | 38.1 | 91.2 |