Ultrasound-Assisted Extraction of Total Flavonoids from Corn Silk and Their Antioxidant Activity

Table 1

Experimental design and data for response surface analysis.

Run	Factors			Flavonoids extraction yield (%)
				Experimental data	Predictive value
1				1.01	1.08
2				0.97	0.93
3				0.98	1.00
4				1.06	1.08
5				0.91	0.89
6				1.08	1.08
7				1.01	1.08
8				0.99	0.97
9				1.03	1.08
10				0.94	0.91
11				0.75	0.79
12				1.00	1.00
13				1.07	1.09
14				0.82	0.84
15				1.07	1.09
16				0.91	0.91
17				1.22	1.08