Components
% (w/v) |
Untretated material |
Pretreated material |
Bagasse |
Straw |
Bagasse |
Straw |
Bagasse-straw 1:1 mixture |
Cellulose |
39.99 ± 3.50 |
29.39 ± 8.20 |
48.97 ± 3.28 |
36.34 ± 3.44 |
42.66 ± 3.16 |
Hemicellulose |
21.82 ± 4.43 |
31.38 ± 2.88 |
4.37 ± 0.42 |
2.62 ± 0.50 |
4.41 ± 0.42 |
Lignin |
26.51 ± 1.45 |
26.00 ± 0.60 |
32.05 ± 0.53 |
30.76 ± 2.89 |
33.34 ± 2.95 |
Ashes |
1.40 ± 0.04 |
4.83 ± 0.10 |
2.57 ± 0.50 |
6.28 ± 0.01 |
4.64 ± 0.60 |
Extractives*/others |
7.41 ± 0.71 |
12.65 ± 0.09 |
9.94 ± 5.8 |
18,54 ± 4.81 |
8.37 ± 0.30 |
Total |
97.14 ± 8.30 |
104.24 ± 6.97 |
97.90 ± 3.41 |
94.54 ± 6.81 |
100.20 ± 6.03 |
*The extractives content of the pretreated materials was estimated based on mass balance after pretreatment. The untreated straw extractives content, of 12.60%, was
determined after washing the material. The straw used in the pretreatment was not washed and presented 17.55 ± 0.53 extractives content |