Table II.
13C resonance assignments and approximate T1ρ (from delayed contact experiments) for hydrated sugar beet cell walls
| Assignment | Resonance | T1ρ |
|---|---|---|
| ppm | ms | |
| Acetyl carboxy | 175 | – |
| Galacturonan carboxy | 172 | – |
| Arabinan C-1 | 108 | 8 |
| Cellulose and galactan C-1 | 105 | 17 |
| Galacturonan and other C-1 | 101 to 99 | 7 |
| Crystalline cellulose C-4 | 89 | 17 |
| Crystal surface cellulose C-4 | 84 | 12 |
| Galacturonan C-4 | 80 | 9 |
| General carbohydrate C-2, C-3, C-5 | 75 to 72 | 16 to 14 |
| Galacturonan C-2, C-3 | 69 | 7 |
| Crystalline cellulose C-6 | 65 | 12 |
| Crystal surface cellulose, galactan C-6, and arabinan C-5 | 62 | 11 |
| Methoxy CH3 | 53.5 | 5 |
| Acetyl CH3 | 21 | 9 |
| Rhamnose CH3 | 18 | 5 |