Table 1.

Yields of matrices flower, leaf, and stalk of S. brasiliensis obtained by ultrasound-assisted extraction using a CCRD

Assay	Power intensity (W/cm2)	Duty cycle (s/s)	Yield (wt%)
			Flower	Leaf	Stalk
1	26.89 (− 1)	0.57 (− 1)	4.32	6.31	3.24
2	75.11 (1)	0.57 (− 1)	6.41	10.15	4.55
3	26.89 (− 1)	0.93 (1)	5.00	7.37	3.55
4	75.11 (1)	0.93 (1)	7.14	11.82	5.69
5	17 (− 1.41)	0.75 (0)	3.56	6.13	2.85
6	85 (1.41)	0.75 (0)	6.52	10.68	5.57
7	51 (0)	0.50 (− 1.41)	5.02	7.62	4.23
8	51 (0)	1.0 (1.41)	5.82	8.92	4.51
9	51 (0)	0.75 (0)	5.32	8.66	4.45
10	51 (0)	0.75 (0)	5.31	8.65	4.49
11	51 (0)	0.75 (0)	5.30	8.67	4.48
12	0	0	4.17	6.25	3.2