Optimization of Aeration and Agitation Rate for Lipid and Gamma Linolenic Acid Production by Cunninghamella bainieri 2A1 in Submerged Fermentation Using Response Surface Methodology

Table 1

Process variables and determined levels for central composite design.

Variable	Symbol	Actual level					Coded value
Aeration rate (vvm)		0.16	0.30	0.65	1	1.14	−1.41	−1	0	1	1.41
Agitation rate (rpm)		117.16	200	400	600	682.84	−1.41	−1	0	1	1.41