Application of Full Factorial Design in Optimization of Solvent-Free Microwave Extraction of Ginger Essential Oil

Table 2

The 2³ factorials design including the corresponding responses.

Run	Code variables			Oil yield (%)
	(extraction time)	(microwave power)	(sample type)
1	−1	−1	−1	0.10
2	1	−1	−1	0.26
3	−1	1	−1	0.14
4	1	1	−1	0.35
5	−1	−1	1	0.22
6	1	−1	1	0.20
7	−1	1	1	0.28
8	1	1	1	0.44
9	−1	−1	−1	0.12
10	1	−1	−1	0.25
11	−1	1	−1	0.14
12	1	1	−1	0.32
13	−1	−1	1	0.24
14	1	−1	1	0.17
15	−1	1	1	0.31
16	1	1	1	0.46