Mathematical Problems in Engineering / 2018 / Article / Tab 1

Research Article

Optimization of Microwave Vacuum Drying and Pretreatment Methods for Polygonum cuspidatum

Table 1

Orthogonal experiment design.

Expt. numberPretreatment methodsVacuum pressure
(mbar)
Temperature of inner materials (°C)

(1)1 (blanching for 30 s at 100°C)1 (200)1 (50)
(2)12 (400)2 (60)
(3)13 (600)3 (70)
(4)2 (microwave 700 w for 10 s)12
(5)223
(6)231
(7)3 (no pretreatment)13
321
332