Optimization of Large-Scale Culture Conditions for the Production of Cordycepin with Cordyceps militaris by Liquid Static Culture

Table 4

Factors and levels of central composite design for amino acid, nucleoside analogue, and time.

Symbol	Variables	Code level
		−1.6818	−1	0	1	1.6818
𝐴	Hypoxanthine (g/L)	0.53	1	5	9	10.53
𝐵	L-alanine (g/L)	5.27	8	12	16	18.72
𝐶	Culture time (days)	−0.09	4	10	16	20.09