| Fraction No. | Acid-insoluble lignin % | Soluble lignin % | Glucan % | Xylan % | Ash % | Others % |
---|---|---|---|---|---|---|---|
Rice straw | 1 | 19.5 | 6.5 | 31.9 | 12.8 | 10.0 | 19.3 |
Solid fraction | 2 | 17.2 | 2.5 | 53.6 | 1.1 | 16.5 | 9.1 |
Brown precipitate | 3 | 29.4 | 8.7 | 13.2 | 13.5 | 4.4 | 30.8 |
Supernatant | 4 | 17.3 | 9.6 | 8.1 | 19.4 | 0.0 | 45.5 |
NF concentrate | 5 | 17.0 | 11.2 | 9.6 | 24.6 | 0.0 | 37.6 |
Black precipitate | 6 | 52.9 | 12.9 | 4.0 | 11.9 | 0.1 | 18.3 |
UF concentrate | 7 | 24.5 | 16.7 | 5.6 | 29.0 | 0.0 | 24.2 |