An efficient multi-stage fermentation strategy for the production of microbial oil rich in arachidonic acid in Mortierella alpina

Bioresources and Bioprocessing

Table 1 Comparison of fermentation parameters at different stages of ARA fermentation via a multi-stage fermentation strategy

	Stage
	I	II	III	IV
Glucose consumption rate (g/L h⁻¹)	0.479 ± 0.28	1.104 ± 0.19	0.694 ± 0.29	None
ARA increase (%)	None	10.676 ± 0.81	2.492 ± 0.13	18.862 ± 0.23
Y _x/s	0.614 ± 0.21	0.373 ± 0.32	0.419 ± 0.18	None
Y _l/s	0.165 ± 0.33	0.208 ± 0.38	0.341 ± 0.21	None
Y _ARA/s	0.048 ± 0.33	0.098 ± 0.33	0.159 ± 0.18	None