Ultrasonic-Assisted Extraction of Natural Yellow Pigment from Physalis pubescens L. and Its Antioxidant Activities

Table 3

Results of response surface experiment.

Run	Ultrasonic power (%)	Ultrasonic time (min)	Ultrasonic interval time	Yield (%)
	A	B	C
1	−1	−1	0	0.177
2	1	−1	0	0.116
3	−1	1	0	0.110
4	1	1	0	0.094
5	−1	0	−1	0.111
6	1	0	−1	0.101
7	−1	0	1	0.123
8	1	0	1	0.132
9	0	−1	−1	0.116
10	0	1	−1	0.111
11	0	−1	1	0.126
12	0	1	1	0.136
13	0	0	0	0.171
14	0	0	0	0.201
15	0	0	0	0.192
16	0	0	0	0.192
17	0	0	0	0.197