Table 1.

[Ch][OAc] pretreatment conditions on rice straw based on RSM with Box-Behnken design. The reducing sugar yield (Y) was measured after pretreatment of each condition with different temperature (X₁), time (X₂), and loading ratio (X₃).

Run	Pretreatment Temperature (°C)	Pretreatment Time (min)	Loading Ratio (%wt)	Sugar Yield (mg/g-Biomass)
1	90	60	10	120.47
2	90	210	5	145.46
3	90	210	15	138.06
4	90	360	10	217.98
5	110	60	5	159.76
6	110	60	15	176.04
7	110	210	10	287.54
8	110	210	10	294.45
9	110	210	10	340.33
10	110	210	10	335.89
11	110	210	10	291.49
12	110	360	5	362.04
13	110	360	15	408.91
14	130	60	10	431.60
15	130	210	5	512.02
16	130	210	15	496.23
17	130	360	10	528.30