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

Table 1

The variable factors with the coded and actual values.

Factor	Level
	−1.682	−1	0	1	1.682
Infiltration time/min	43	50	60	70	77
Microwave power density/W·g^−1	8.5	9.6	11.2	12.8	13.9
VM radiation time/s	130	150	180	210	230