Table 5.
Arabinose and ethanol yields from pretreated samples following fermentation
| Miscanthus accession | Mild water | Severe water | Acid | Alkali | Accession mean | ||||
|---|---|---|---|---|---|---|---|---|---|
| Arabinose yields ± standard deviation (mg g−1 dry solids) | |||||||||
| High 1 | 21.0 ± 2.7 | b | 25.8 ± 1.4 | b | 33.4 ± 6.8 | a | 55.6 ± 3.5 | c | 34.0 |
| High 2 | 14.1 ± 3.4 | ab | 24.3 ± 6.3 | ab | 35.6 ± 2.3 | a | 37.8 ± 2.8 | abc | 27.9 |
| High 3 | 15.0 ± 2.7 | ab | 19.5 ± 1.4 | ab | 33.5 ± 5.5 | a | 43.4 ± 9.3 | bc | 27.9 |
| Medium 1 | 13.8 ± 0.9 | ab | 17.5 ± 0.3 | ab | 27.5 ± 2.3 | a | 34.2 ± 2.3 | ab | 23.2 |
| Medium 2 | 14.7 ± 1.1 | ab | 17.9 ± 0.2 | ab | 29.0 ± 2.9 | a | 34.4 ± 3.1 | ab | 24.0 |
| Medium 3 | 13.0 ± 2.1 | a | 17.0 ± 0.8 | ab | 27.6 ± 1.9 | a | 33.6 ± 2.5 | ab | 22.8 |
| Low 1 | 12.9 ± 0.4 | a | 16.1 ± 1.3 | a | 26.1 ± 2.5 | a | 29.3 ± 1.4 | ab | 21.1 |
| Low 2 | 13.7 ± 0.2 | ab | 15.8 ± 1.0 | a | 21.0 ± 1.7 | a | 19.9 ± 7.5 | a | 17.6 |
| Low 3 | 16.2 ± 0.9 | ab | 20.6 ± 0.8 | ab | 30.8 ± 6.6 | a | 46.0 ± 3.7 | bc | 28.4 |
| Ethanol yields ± standard deviation (μL g−1 dry solids) | |||||||||
| High 1 | 64.9 ± 3.2 | d | 46.1 ± 9.2 | ab | 105.0 ± 5.3 | g | 101.7 ± 0.7 | abc | 79.4 |
| High 2 | 36.7 ± 4.9 | c | 77.8 ± 6.9 | a | 55.7 ± 4.0 | de | 151.4 ± 9.6 | d | 80.4 |
| High 3 | 27.9 ± 0.4 | abc | 28.2 ± 0.6 | c | 74.0 ± 2.4 | f | 93.6 ± 5.3 | ab | 56.0 |
| Medium 1 | 17.5 ± 2.1 | a | 45.0 ± 3.0 | ab | 36.6 ± 2.9 | bc | 119.3 ± 10.6 | c | 54.6 |
| Medium 2 | 14.9 ± 1.5 | a | 50.9 ± 3.8 | b | 44.3 ± 2.7 | cd | 121.9 ± 7.7 | c | 58.0 |
| Medium 3 | 19.0 ± 9.9 | ab | 49.5 ± 7.4 | b | 37.0 ± 3.5 | bc | 114.3 ± 2.3 | bc | 54.9 |
| Low 1 | 14.1 ± 0.5 | a | 35.1 ± 3.4 | ab | 28.3 ± 0.7 | ab | 99.0 ± 1.7 | abc | 44.1 |
| Low 2 | 12.4 ± 4.2 | a | 36.8 ± 5.0 | ab | 21.7 ± 1.6 | a | 103.2 ± 1.5 | abc | 43.5 |
| Low 3 | 34.9 ± 2.5 | bc | 30.8 ± 3.2 | ab | 57.3 ± 1.8 | e | 85.8 ± 6.6 | a | 52.2 |
All values reported (mg and μL g−1 dry solids, respectively) significant differences as identified by Tukey HSD multiple comparison analysis (different lower case letters denote significant differences between treatments)
n = 2 (accession means n = 8)
± = standard deviation