Plackett–Burman Combined with Box–Behnken to Optimize the Medium of Fermented Tremella Polysaccharide and Compare the Characteristics before and after Optimization

Table 1

Design of the single-factor experiment for a basic culture medium.

Trial run	1	2	3	4	5
Potato extract (%)	10.0	15.0	20.0	25.0	30.0
Glucose (g/L)	15.0	20.0	25.0	30.0	35.0
Peptone (g/L)	1.0	1.5	2.0	2.5	3.0
KH2PO4 (g/L)	2.0	2.5	3.0	3.5	4.0
MgSO4·7H2O (g/L)	0.5	1.0	1.5	2.0	2.5
Vb1 (mg/L)	6.0	7.0	8.0	9.0	10.0