Table 4 Chemical composition of WIF after steam pretreatment of poplar samples (as percentages of the solid weight)
| Â | Chemical composition (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Arabinan | Galactan | Glucan | Xylan | Mannan | Total sugar | Total phenolics | Acetic acid | Ash | |
NLC | 0.1 ± 0.1 | 0.1 ± 0.1 | 52.2 ± 0.3 | 2.4 ± 0.3 | 0.5 ± 0.1 | 55.2 ± 0.1 | 37.4 ± 0.1 | 1.6 ± 0.2 | 2.0 ± 0.1 |
WTC | 0.1 ± 0.1 | 0.4 ± 0.1 | 36.6 ± 0.1 | 3.6 ± 0.3 | 0.7 ± 0.1 | 41.4 ± 0.1 | 43.6 ± 0.1 | 1.9 ± 0.1 | 5.8 ± 0.3 |
LC | 0.4 ± 0.1 | 0.9 ± 0.2 | 13.1 ± 2.9 | 3.2 ± 0.6 | 0.4 ± 0.1 | 17.9 ± 0.6 | 50.5 ± 0.2 | 2.5 ± 0.9 | 9.8 ± 0.4 |
WWF | 0.0 ± 0.0 | 0.0 ± 0.0 | 62.4 ± 2.4 | 1.1 ± 0.1 | 0.4 ± 0.1 | 63.9 ± 0.3 | 31.2 ± 0.1 | 0.0 ± 0.0 | 0.1 ± 0.1 |