Optimization of Ultrasound-Assisted Extraction of Polyphenol Content from Zea mays Hairs (Waste)

Table 2

Box–Behnken design (coded) arrangement for extraction of Z. mays hairs.

N°Exp	Rand	Ethanol (mL)	Solvent to material (mL/g)	Time extraction (min)	Yield (%)	Polyphenol content (Mg EAG/g extract)
1	—	50	10	45	26.35	187.24
2	—	50	10	45	26.34	187.00
3	—	70	10	45	28.23	250.28
4	—	70	10	45	28.19	250.25
5	—	50	20	45	16.47	126.78
6	—	50	20	45	16.44	126.70
7	—	70	20	45	9.32	87.45
8	—	70	20	45	9.33	87.44
9	—	50	15	40	20.12	166.78
10	—	50	15	40	20.11	166.77
11	—	70	15	40	12.34	151.34
12	—	70	15	40	12.34	151.34
13	—	50	15	50	18.83	119.54
14	—	50	15	50	18.82	119.50
15	—	70	15	50	13.81	139.37
16	—	70	15	50	13.81	139.33
17	—	60	10	40	24.45	240.24
18	—	60	10	40	24.44	240.20
19	—	60	20	40	15.24	147.52
20	—	60	20	40	15.22	147.50
21	—	60	10	50	25.45	184.54
22	—	60	10	50	25.44	184.52
23	—	60	20	50	11.51	119.24
24	—	60	20	50	11.50	119.23
25	—	60	15	45	27.34	168.87
26	—	60	15	45	27.31	168.80