Optimization of Vacuum-Microwave Radiation Pretreatment on Extraction of Ganoderma Polysaccharides

Table 2

Test design and results of RSM.

Number	Infiltration time	Microwave power density	VM radiation time	Extraction yield; (%)
1	−1	−1	−1	1.661
2	−1	−1	1	1.589
3	−1	1	−1	1.665
4	−1	1	1	1.689
5	1	−1	−1	1.725
6	1	−1	1	1.628
7	1	1	−1	1.707
8	1	1	1	1.681
9	−1.68179	0	0	1.593
10	1.68179	0	0	1.789
11	0	−1.68179	0	1.651
12	0	1.68179	0	1.646
13	0	0	−1.68179	1.697
14	0	0	1.68179	1.643
15	0	0	0	1.772
16	0	0	0	1.768
17	0	0	0	1.771
18	0	0	0	1.769
19	0	0	0	1.769
20	0	0	0	1.77
21	0	0	0	1.77
22	0	0	0	1.771
23	0	0	0	1.771