Table 1.

Experimental conditions used in the Box-Behnken design analysis and the corresponding measured responses.

Runs	Factors			Extraction Yield (mg/g)
	X1 (mL/g) a	X2 (min) b	X3 (w) c	CPT	BA
1	0(30)	0(20)	0(200)	2.333	16.448
2	0(30)	0(20)	0(200)	2.329	16.442
3	0(30)	−1(10)	−1(150)	1.591	11.607
4	−1(20)	0(20)	1(250)	1.693	13.366
5	1(40)	−1(10)	0(200)	1.498	14.434
6	0(30)	1(30)	−1(150)	1.552	13.374
7	−1(20)	−1(10)	0(200)	1.379	11.634
8	1(40)	0(20)	1(250)	1.983	15.968
9	1(40)	0(20)	−1(150)	1.525	11.939
10	0(30)	0(20)	0(200)	2.297	16.572
11	−1(20)	0(20)	−1(150)	1.344	10.822
12	0(30)	0(20)	0(200)	2.245	16.107
13	1(40)	1(30)	0(200)	1.611	15.828
14	0(30)	−1(10)	1(250)	1.885	14.861
15	0(30)	0(20)	0(200)	2.369	16.721
16	−1(20)	1(30)	0(200)	1.466	13.275
17	0(30)	1(30)	1(250)	2.385	16.883

^a X₁ indicates the liquid–solid ratio (mL/g), ^b X₁ the ultrasonic time (min), and ^c X₃ the ultrasonic power (W).