Table 1.
Chemical composition of internode fractions from six different sugarcane hybrids
| Sugarcane hybrids | Internode region | Chemical composition (%, w/w on oven dry basis) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Ethanol-soluble extractives | Glucan | Xylan | Arabinosyl | Acetyl | Lignin | ||||
| Acid insoluble | Acid soluble | Total lignin | |||||||
| H 89 | Pith | 1.4 ± 0.2 | 55.0 ± 0.1 | 14.5 ± 0.1 | 3.7 ± 0.1 | 2.7 ± 0.1 | 11.0 ± 0.5 | 2.9 ± 0.3 | 13.9 ± 0.4 |
| Interface | 2.2 ± 0.1 | 46.5 ± 0.3 | 18.9 ± 0.2 | 2.0 ± 0.1 | 3.5 ± 0.1 | 17.3 ± 0.2 | 3.2 ± 0.3 | 20.5 ± 0.3 | |
| Rind | 2.6 ± 0.1 | 43.7 ± 0.3 | 22.7 ± 0.1 | 1.4 ± 0.1 | 3.7 ± 0.1 | 19.4 ± 0.5 | 2.3 ± 0.2 | 21.7 ± 0.4 | |
| H 146 | Pith | 3.2 ± 0.1 | 44.1 ± 0.5 | 20.4 ± 0.1 | 2.6 ± 0.1 | 4.1 ± 0.1 | 15.0 ± 0.4 | 2.9 ± 0.1 | 17.9 ± 0.3 |
| Interface | 4.8 ± 0.2 | 38.1 ± 0.9 | 20.7 ± 0.6 | 1.8 ± 0.1 | 4.2 ± 0.2 | 18.8 ± 0.1 | 3.3 ± 0.4 | 22.0 ± 0.3 | |
| Rind | 4.3 ± 0.4 | 43.6 ± 0.1 | 21.3 ± 0.1 | 1.1 ± 0.1 | 3.6 ± 0.1 | 18.9 ± 0.2 | 2.8 ± 0.4 | 21.6 ± 0.3 | |
| H 58 | Pith | 1.4 ± 0.2 | 51.8 ± 0.1 | 17.5 ± 0.1 | 2.9 ± 0.1 | 3.9 ± 0.3 | 10.2 ± 0.2 | 4.1 ± 0.7 | 14.3 ± 0.5 |
| Interface | 3.4 ± 0.2 | 47.0 ± 0.1 | 19.9 ± 0.1 | 2.4 ± 0.1 | 4.0 ± 0.1 | 14.3 ± 0.9 | 2.7 ± 0.2 | 17.0 ± 0.6 | |
| Rind | 3.0 ± 0.2 | 44.1 ± 0.2 | 22.5 ± 0.2 | 1.4 ± 0.1 | 4.3 ± 0.3 | 16.8 ± 0.7 | 3.3 ± 0.1 | 20.1 ± 0.5 | |
| H 166 | Pith | 3.3 ± 0.2 | 50.0 ± 0.1 | 17.6 ± 0.1 | 2.1 ± 0.1 | 3.4 ± 0.1 | 14.1 ± 0.1 | 2.7 ± 0.1 | 16.9 ± 0.1 |
| Interface | 5.1 ± 0.1 | 42.1 ± 0.6 | 20.1 ± 0.2 | 1.6 ± 0.1 | 3.6 ± 0.4 | 18.0 ± 0.1 | 2.8 ± 0.1 | 20.8 ± 0.1 | |
| Rind | 3.2 ± 0.1 | 43.8 ± 0.1 | 20.4 ± 0.3 | 1.2 ± 0.1 | 3.7 ± 0.1 | 19.2 ± 0.1 | 2.4 ± 0.1 | 21.6 ± 0.1 | |
| H 321 | Pith | 5.1 ± 0.1 | 43.1 ± 0.1 | 19.6 ± 0.5 | 2.9 ± 0.2 | 3.7 ± 0.1 | 16.9 ± 0.1 | 3.2 ± 0.1 | 20.1 ± 0.1 |
| Interface | 2.4 ± 0.2 | 38.5 ± 0.2 | 20.2 ± 0.1 | 1.9 ± 0.1 | 4.1 ± 0.1 | 20.8 ± 0.1 | 3.0 ± 0.2 | 23.8 ± 0.1 | |
| Rind | 4.0 ± 0.1 | 42 ± 2 | 20.7 ± 0.7 | 1.4 ± 0.1 | 3.8 ± 0.1 | 19.5 ± 0.2 | 2.4 ± 0.1 | 22.0 ± 0.2 | |
| H 140 | Pith | 3.6 ± 0.1 | 39.9 ± 0.4 | 19.2 ± 0.2 | 2.0 ± 0.1 | 3.0 ± 0.3 | 19.0 ± 0.2 | 2.8 ± 0.5 | 21.9 ± 0.4 |
| Interface | 2.5 ± 0.3 | 40.8 ± 0.1 | 21.6 ± 0.1 | 1.8 ± 0.1 | 4.6 ± 0.1 | 17.5 ± 0.9 | 3.2 ± 0.8 | 20.7 ± 0.8 | |
| Rind | 3.1 ± 0.1 | 40.5 ± 0.7 | 22.1 ± 0.4 | 1.3 ± 0.1 | 3.1 ± 0.4 | 19.8 ± 0.2 | 2.6 ± 0.1 | 22.4 ± 0.2 | |