Table 1 Effect of pretreatments of rice straw on its main components
Pretreatment conditions | Composition analysis of rice straw (w/w, %)a | ||||
|---|---|---|---|---|---|
Cellulose | Xylan | Klason lignin | Water-soluble extractives | Water content | |
Untreated | 37.5 | 10.5 | 18.4 | 9.3 | 9.7 |
25 kGy | 37.1 | 10.8 | 18.2 | 9.2 | 9.6 |
50 kGy | 37.4 | 10.6 | 18.3 | 9.5 | 9.3 |
75 kGy | 37.3 | 10.3 | 18.2 | 9.4 | 9.1 |
100 kGy | 37.9 | 10.6 | 18.5 | 9.4 | 9.1 |
NaOH | 52.7 | 6.0 | 14.1 | 8.3 | 5.4 |
25 kGy + NaOH | 52.7 | 5.9 | 13.6 | 8.1 | 5.5 |
50 kGy + NaOH | 54.2 | 5.8 | 12.5 | 8.1 | 4.3 |
75 kGy + NaOH | 56.9 | 4.4 | 11.5 | 7.2 | 4.3 |
100 kGy + NaOH | 60.0 | 3.8 | 11.0 | 6.3 | 4.0 |