Effect of Plant Oils upon Lipase and Citric Acid Production in Yarrowia lipolytica Yeast

Table 2

Characteristic parameters of biomass, lipase activity, and CA and ICA production by Y. lipolytica DSM 3286 on lipase basal medium with different nitrogen sources.

Nitrogen source	X	YX/S	YL/S	PL	qL	QL	YCit/S	PCit	qCit	Cit/Isocit
Malt extract	5.08	0.508	0.573	0.119	0.023	119.375	0.260	0.036	0.007	1.078
Beef extract	8.48	0.848	1.244	0.259	0.030	259.166	0.126	0.017	0.002	0.782
Soy bean flour	9.54	0.954	1.763	0.367	0.038	367.291	0.310	0.043	0.004	0.914
Peptone	8.23	0.823	1.928	0.401	0.048	401.666	0.220	0.030	0.003	0.788
Casein	9.73	0.973	2.404	0.500	0.051	500.833	0.132	0.018	0.001	1.211
Yeast extract	8.20	0.820	3.470	0.722	0.088	722.916	0.362	0.050	0.006	0.828
Urea	6.66	0.666	1.683	0.350	0.052	350.625	0.393	0.054	0.008	1.301
NH4Cl	6.88	0.688	1.012	0.210	0.030	210.833	0.116	0.016	0.002	1.064
(NH4)2SO4	7.10	0.710	0.748	0.155	0.021	155.833	0.109	0.015	0.002	1.211
NH4NO3	6.99	0.699	0.682	0.142	0.020	142.083	0.110	0.015	0.002	1.222
NH4H2PO4	5.52	0.552	0.204	0.042	0.007	42.500	0.273	0.037	0.006	1.716