Table 1.

Growth characteristics of Y. lipolytica in the different media

	SM1	SM2	SM4	CM
μa (h-1)	0.18	0.18	0.16	0. 22
Maximal Biomass (g/l)	24.01	17.72	14.26	40.1
IFN yield (μg/l)	14	3	120	125
Y( hIFN/X) (mg/g)	0.58 × 10-3	0.17 × 10-3	0.84 × 10-2	0.32 × 10-2
Residual oleic acid (g/l)	1.4	0.7	0.54	1.1
Final pH	3.64	2.72	3.18	7.78
Cell morphology	Mycelium	yeast cells	yeast cells	yeast cells+
Biological activity (UI/mg)	0.42 × 107	0.54 × 107	0.97 × 107	mycelium 1.03 × 107

^aμ; growth rate calculated from total biomass level (g/l).