Table 2.
Composition analysis of isolated lignin (S-L), sugars (S-S), and yeast-purified XOS from prehydrolyzate (%)
| S-L | S-S | E-S | Purified XOS | |
|---|---|---|---|---|
| Xylose (X1) | 1.7 | 15.9 | 22.1 | 0.5 |
| Xylobiose (X2) | 0.7 | 9.2 | 23.1 | 31.8 |
| Xylotriose (X3) | 0.6 | 8.0 | 19.5 | 26.9 |
| Xylotetraose (X4) | 1.0 | 6.1 | 7.1 | 9.2 |
| Xylopentaose (X5) | 2.7 | 4.6 | 5.1 | 7.8 |
| Xylohexaose (X6) | 2.2 | 4.4 | 4.3 | 6.2 |
| XOS (DP 2–6)a | 7.2 | 32.3 | 59.1 | 81.9 |
| XOS (DP > 6) | 3.2 | 31.7 | 4.1 | 5.1 |
| Lignin | 80.9 | 4.5 | 4.9 | 5.4 |
| Arabinose/arabinan | 0.4 | 1.1 | 0.7 | 0.4 |
| Glucose/glucan | 2.3 | 1.2 | 1.1 | 0.0 |
| Others | 4.3 | 13.3 | 8.0 | 6.7 |
X1 + XOS + arabinose/araban + glucose/glucan + lignin + others = 100%
aXOS (DP 2–6) = X2 + X3 + X4 + X5 + X6