Table 2.
Experimental points of the central composite design and the exper imental data of sikye manufacture under different conditions based on the central composite design for response surface analysis

No.	X1	X2	X3	Water uptake (g)	Solubility (%)	Particle size (μm)
1	15	140	40	0.033±0.001	91.71±1.53	10.09±0.21
2	25	140	40	0.028±0.004	92.71±7.34	11.32±0.06
3	15	180	40	0.041±0.003	93.46±5.05	10.41±0.07
4	25	180	40	0.039±0.001	89.32±0.8	11.42±0.54
5	15	140	50	0.029±0.003	87.9±6.26	6.34±0.1
6	25	140	50	0.026±0.004	90.79±5.23	7.03±0.06
7	15	180	50	0.039±0.001	89.88±3.79	6.94±0.06
8	25	180	50	0.034±0.002	93.35±1.91	7.48±0.07
9	10	160	45	0.038±0.001	83.77±3.38	7.31±0.11
10	30	160	45	0.031±0.003	78.77±4.69	8.79±0.14
11	20	120	45	0.023±0.003	88.53±2.51	7.29±0.24
12	20	200	45	0.048±0.003	85.9±5.27	8.31±0.39
13	20	160	35	0.038±0.001	89.99±1.45	13.24±0.33
14	20	160	55	0.031±0.002	93.19±1.77	7.35±0.1
15	20	160	45	0.036±0.003	95.52±0.95	8.42±0.52
16	20	160	45	0.036±0.002	96.08±1.61	8.51±0.09