Table 1 Soluble carbohydrates, acids and phenols in water extracts of the differently pretreated samples (the contents of xylitol and formic acid were below 0.1 g/100 g TS in all samples, data not shown)
From: Combination of ensiling and fungal delignification as effective wheat straw pretreatment
g/100 g TS | WS | EWS | w WS | w EWS | WS F | EWS F | w WS F | w EWS F |
|---|---|---|---|---|---|---|---|---|
Free Sugars | ||||||||
Glucose | 0.16 ± 0.02 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.09 ± 0.14 | 0.24 ± 0.02 |
Xylose | 0.07 ± 0.06 | 2.10 ± 0.04 | 0.02 ± 0.00 | 0.95 ± 0.05 | 0.01 ± 0.01 | 1.89 ± 0.13 | 0.08 ± 0.08 | 0.01 ± 0.02 |
Arabinose | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.19 ± 0.02 | 0.00 ± 0.01 | 0.00 ± 0.00 |
Oligomers | ||||||||
Glucan | 0.12 | 0.11 | 0.13 | 0.05 | 0.26 | 0.22 | 0.49 | 0.45 |
Xylan | 0.25 | 0.46 | 0.14 | 0.16 | 0.72 | 0.63 | 0.97 | 1.89 |
Arabinan | 0.03 | 0.06 | 0.02 | 0.03 | 0.18 | 0.12 | 0.23 | 0.53 |
Acids | ||||||||
Lactic acid | 0.00 ± 0.00 | 2.10 ± 0.08 | 0.01 ± 0.00 | 0.60 ± 0.02 | 0.01 ± 0.01 | 1.91 ± 0.04 | 0.00 ± 0.00 | 0.00 ± 0.00 |
Acetic acid | 0.16 ± 0.02 | 1.49 ± 0.04 | 0.09 ± 0.00 | 0.37 ± 0.01 | 0.03 ± 0.02 | 1.22 ± 0.09 | 0.02 ± 0.01 | 0.05 ± 0.00 |
Total phenols | 0.41 ± 0.05 | 0.22 ± 0.02 | 0.23 ± 0.02 | 0.11 ± 0.03 | 0.57 ± 0.05 | 0.39 ± 0.03 | 0.57 ± 0.05 | 0.14 ± 0.02 |