Microwave Assisted Extraction of Defatted Roselle (Hibiscus sabdariffa L.) Seed at Subcritical Conditions with Statistical Analysis

Table 1

Experimental design for the extraction process obtained from central composite design (CCD) and corresponding responses.

Run	Independent variable			Responses					Vapor fraction
	min	W	mL/g	%	mg GAE/g	mg QE/g					Bar
	1	7	200	62.5	26.8490	13.5000	3.8585	125		6.5	0
2	7	200	62.5	35.5122	15.5500	6.8826	132	8.1	0
3	10	100	25	21.2813	11.1167	2.7157	101	2.7	0
4	7	300	62.5	43.3767	15.8025	7.9784	139	9.8	0
5	4	300	25	28.2500	12.0353	3.4522	127	6.6	0
6	7	200	62.5	30.7205	15.0506	5.9225	130	7.7	0
7	7	200	62.5	33.6198	13.4445	8.4663	130	7.3	0
8	10	300	100	63.5000	17.9055	14.4251	158	16.4	0
9	7	200	62.5	26.1458	13.8562	4.6594	129	7.3	0
10	10	200	62.5	34.0104	15.6493	9.5308	138	9.7	0
11	4	100	100	27.5000	10.4017	2.4896	88	1.2	1
12	4	300	100	31.2500	14.0391	6.4539	131	7.2	0
13	7	200	25	29.0105	13.0349	5.8925	135	8.8	0
14	10	300	25	59.0521	14.2493	4.5561	151	14.1	0
15	4	100	25	17.0000	9.6644	1.6985	81	0.7	1
16	7	100	62.5	21.4323	13.1577	3.4329	107	3.6	0
17	4	200	62.5	27.6649	12.9401	4.2035	119	5.3	0
18	7	200	100	32.6667	13.1936	6.2006	122	6.0	0
19	10	100	100	26.8333	12.3017	3.6894	106	3.1	0
20	7	200	62.5	28.3594	15.5853	5.7097	129	6.3	0