Table 2.
Wheat straw pretreatment conditions and the cellulose conversion rates: statistical significance is indicted with superscript asterisk: *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001, and ns indicted not statistically different at P = 0.05; aCompared to cellulose in raw WS; bCompared to cellulose in pretreated WS.
| Sample no. | Temp. (°C) |
Conversion rate of cellulosea (%) |
Conversion rate of celluloseb (%) |
|---|---|---|---|
| 0.5% H2SO4-pretreated | 121 | 36.3 ± 1.84**** | |
| 1% H2SO4-pretreated | 121 | 39.8 ± 1.55**** | |
| 2% H2SO4-pretreated | 121 | 45.9 ± 1.33**** | 65.6 ± 1.90**** |
| 4% H2SO4-pretreated | 121 | 49.2 ± 0.42**** | 86.6 ± 0.73ns |
| 4% H2SO4-pretreated | 50 | 19.2 ± 0.49**** | |
| 4% H2SO4-pretreated | 100 | 23.1 ± 0.75**** | |
| 0.5% NaOH-pretreated | 121 | 38.1 ± 1.66**** | |
| 1% NaOH-pretreated | 121 | 56.4 ± 3.47*** | |
| 2% NaOH-pretreated | 121 | 59.7 ± 0.96ns | 75.0 ± 1.21**** |
| 4% NaOH-pretreated | 121 | 65.8 ± 0.17 | 87.2 ± 3.42 |
| 4% NaOH-pretreated | 50 | 55.6 ± 0.44**** | |
| 4% NaOH-pretreated | 100 | 59.3 ± 2.30* | |
| Water-pretreated | 121 | 28.3 ± 1.05**** | 28.7 ± 1.07**** |
| Water-pretreated | 50 | 21.8 ± 1.04**** | |
| Water-pretreated | 100 | 29.7 ± 1.56**** | |
| Water-pretreated | 175 | 32.9 ± 1.41**** | 48.7 ± 1.78**** |