Table 2 Physical and chemical compositions of four components in SRC poplar and SRF poplar
| Â | Physical composition (%) | Chemical composition (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Arabinan | Galactan | Glucan | Xylan | Mannan | Total sugar | Total phenolics | Acetic acid | Ash | Extractives | ||
WTC | |||||||||||
 Leaf | 37 | 2.9 ± 0.1 | 2.3 ± 0.1 | 13.1 ± 0.6 | 3.9 ± 0.2 | 0.6 ± 0.1 | 22.7 ± 0.1 | 39.8 ± 0.1 | 2.3 ± 0.3 | 10.5 ± 0.1 | 27.6 ± 1.3 |
 Bark | 9 | 4.0 ± 0.1 | 2.1 ± 0.1 | 24.4 ± 0.1 | 4.1 ± 0.1 | 0.6 ± 0.1 | 35.2 ± 0.1 | 32.9 ± 0.3 | 2.6 ± 0.2 | 6.9 ± 0.2 | 27.7 ± 0.5 |
 Branch | 12 | 2.9 ± 0.1 | 1.8 ± 0.1 | 23.9 ± 0.1 | 7.2 ± 0.4 | 0.9 ± 0.1 | 36.8 ± 0.1 | 29.2 ± 0.4 | 3.4 ± 0.2 | 5.7 ± 0.1 | 21.9 ± 0.9 |
 Chip | 42 | 0.5 ± 0.1 | 0.7 ± 0.1 | 38.5 ± 0.3 | 14.3 ± 0.1 | 1.8 ± 0.2 | 55.8 ± 0.2 | 24.2 ± 0.2 | 4.4 ± 0.3 | 1.3 ± 0.1 | 12.3 ± 0.4 |
WWF | N/A | 0.4 ± 0.0 | 0.4 ± 0.1 | 46.5 ± 0.9 | 13.1 ± 0.2 | 2.6 ± 0.1 | 63.0 ± 0.4 | 25.3 ± 0.2 | 1.2 ± 0.1 | 0.7 ± 0.1 | 5.2 ± 0.4 |