Table 1
Composition (% dry basis; mean (standard deviation)) and lignin characteristics of rapeseed straw (Brassica napus) and sunflower stalks (Helianthus annuus).
| Components | Rapeseed straw | Sunflower stalks | ||
| Rap1 | Rap2 | Sun1 | Sun2 | |
| Extractives | ||||
| Water extractives | 21.8 (0.3) | 16.7 (2.8) | 27.3 (0.8) | 24.8 (1.0) |
| Total water-ethanol extractives | 22.7 (1.3) | 18.8 (1.8) | 28.5 (0.9) | 25.6 (0.6) |
| Non water-soluble ethanol extractives | 0.9 | 2.1 | 1.2 | 0.8 |
| Lignin | ||||
| Klason lignin content | 17.2 (0.1) | 17.6 (0.1) | 14.0 (0.4) | 17.2 (0.5) |
| S/G Ratio | 1.5 (0.0) | 1.3 (0.0) | 1.3 (0.0) | 1.4 (0.0) |
| Total thioacidolysis yield (µ mol/g KL) | 2417 (233) | 2527 (283) | 2544 (215) | 2253 (130) |
| Cellulose | ||||
| 32.2 (1.4)a | 30.4 (0.9)a | 34.0 (2.1)a | 31.8 (0.2)a | |
| 33.7 (2.4)b | 31.4 (1.9)b | 33.3 (2.4)b | 34.3 (2.3)b | |
| 25.2c | 25.3c | 24.7c | 23.9c | |
| Non water soluble hemicelluloses | ||||
| 17.2 (1.1)a | 16.9 (0.9)a | 17.4 (1.2)a | 14.9 (0.3)a | |
| 18.2 (1.4)b | 17.1 (1.0)b | 17.2 (1.4)b | 16.2 (1.4)b | |
| 13.4c | 14.0c | 12.6c | 11.2c | |
aIn water extraction residue. bIn two-step extraction residue. c In unextracted material (calculated from the content in the water extraction residue).
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