Table 2.
Neutral sugar and uronic acid composition (µg/mg) and molar ratio analysis of pectic and xyloglucan-related sugars in the digesta from foods and inulin.
| Sugar | Apple | Blackcurrant | Carrot | Gold-fleshed kiwifruit | Green-fleshed kiwifruit | Inulin | Oats | Pumpkin | Sweet corn |
|---|---|---|---|---|---|---|---|---|---|
| Rhamnose | 6. ± 0.4 | 14.6 ± 0.5 | 10.1 ± 0.6 | 4.1 ± 0.1 | 4.4 ± 0.2 | 0.6 ± 0.0 | 0.4 ± 0.0 | 4.6 ± 0.1 | 1.4 ± 0.1 |
| Fucose | 3.6 ± 0.3 | 1.2 ± 0.0 | 1.0 ± 0.1 | 1.1 ± 0.0 | 1.4 ± 0.1 | 0.8 ± 0.0 | 0.2 ± 0.0 | 0.6 ± 0.0 | 0.2 ± 0.1 |
| Arabinose | 22.5 ± 1.4 | 12.3 ± 0.4 | 29.8 ± 1.1 | 6.6 ± 0.5 | 7.4 ± 0.0 | 3.5 ± 0.0 | 10.7 ± 1.9 | 9.7 ± 0.1 | 14.8 ± 0.3 |
| Xylose | 13.9 ± 1.7 | 12.2 ± 0.2 | 3.8 ± 0.1 | 11.8 ± 0.8 | 13.3 ± 0.2 | 0.5 ± 0.1 | 8.9 ± 2.6 | 4.6 ± 0.5 | 11.5 ± 0.2 |
| Mannose | 5.5 ± 0.1 | 4.9 ± 0.0 | 6.9 ± 0.4 | 6.8 ± 0.4 | 6.1 ± 0.1 | 5.0 ± 0.1 | 3.1 ± 0.5 | 5.2 ± 0.2 | 2.3 ± 0.1 |
| Galactose | 20.9 ± 1.1 | 17.8 ± 0.5 | 52.6 ± 2.9 | 24.1 ± 1.7 | 26.3 ± 0.2 | 17.3 ± 0.1 | 10.8 ± 0.6 | 32.5 ± 0.1 | 14.6 ± 0.2 |
| Glucose | 100.0 ± 1.2 | 94.0 ± 3.3 | 96.1 ± 8.0 | 112.3 ± 6.2 | 111.8 ± 6.9 | 62.6 ± 0.3 | 387.1 ± 14.6 | 231.0 ± 24.2 | 185.1 ± 0.6 |
| Uronic acid | 124.7 ± 11.3 | 111.2 ± 5.5 | 130.7 ± 13.6 | 96.8 ± 3.3 | 113.2 ± 4.7 | 19.7 ± 0.9 | 24.4 ± 1.7 | 70.3 ± 7.7 | 39.7 ± 2.0 |
| Total | 297.5 ± 6.2 | 268.2 ± 5.0 | 331.0 ± 12.9 | 263.6 ± 2.9 | 283.8 ± 6.8 | 110.0 ± 0.5 | 445.6 ± 19.0 | 358.5 ± 23.9 | 269.6 ± 0.5 |
| Molar ratio | |||||||||
| Uronic acid/rhamnose | 15.0 | 5.9 | 10.0 | 18.3 | 19.7 | 24.2 | 42.4 | 11.9 | 22.0 |
| (Arabinose + Galactose)/ Rhamnose | 6.8 | 2.0 | 8.0 | 7.2 | 7.2 | 31.1 | 48.4 | 8.8 | 21.1 |
| Xylose/Glucose | 0.17 | 0.16 | 0.04 | 0.14 | 0.16 | 0.01 | 0.03 | 0.02 | 0.07 |
Values (µg/mg of the freeze-dried material) are mean of two determinations, measured in duplicate. S.E. shown.