Table 1.
Compositional analysis results of native (RS), PWW pretreated (A) and distilled water pretreated (D) rice straw with standard deviation.
| Components analysed (%) | RS | A | D |
|---|---|---|---|
| Cellulose | 43.04 ± 2.02 | 53.16 ± 1.84 | 44.79 ± 1.34 |
| Hemicellulose | 28.59 ± 1.7 | 21.36 ± 2.46 | 27.44 ± 1.47 |
| Lignin | 19.06 ± 1.3 | 9.86 ± 1.36 | 18.88 ± 1.05 |
| Extractives | 1.97 ± 0.32 | 1.57 ± 0.22 | 1.84 ± 0.43 |
| Ash content | 11.82 ± 0.65 | 17.67 ± 0.83 | 11.22 ± 0.31 |
| Acid soluble silica | 89.60 ± 3.56 | 55.30 ± 4.12 | 88.98 ± 4.73 |
| Reducing sugar | 3.26 ± 0.34 | 16.83 ± 1.24 | 5.28 ± 0.27 |
| Volatile solids | 88.28 ± 4.5 | 82.33 ± 4.26 | 88.78 ± 0.19 |
| Crystallinity index | 54.55 ± 0.68 | 31.90 ± 0.33 | 52.10 ± 0.51 |
| Moisture content | 4.29 ± 0.14 | 3.99 ± 0.13 | 4.21 ± 0.12 |
| Protein | 4.28 ± 0.20 | 3.02 ± 0.14 | 4.19 ± 0.17 |
| Phosphorus | 0.09 ± 0.02 | 0.25 ± 0.08 | 0.08 ± 0.03 |
| Nitrogen | 0.71 ± 0.10 | 0.52 ± 0.05 | 0.65 ± 0.07 |
| C/N ratio | 45.34 ± 1.12 | 79.98 ± 1.33 | 64.09 ± 1.01 |
| Potassium | 1.61 ± 0.11 | 1.03 ± 0.07 | 1.32 ± 0.16 |
| Iron* | 727.62 ± 0.23 | 501.40 ± 0.25 | 654.21 ± 0.12 |
| Zinc* | 14.96 ± 0.08 | 18.07 ± 0.11 | 14.45 ± 0.07 |
| Sulphur* | 17.81 ± 0.13 | 17.62 ± 0.27 | 17.21 ± 0.09 |
*μg/gDry weight.