Table 1. Variation in pigment contents in C. sorokiniana C3 cells during OD formation.

		Chl a (µg ml−1)	Chl b (µg ml−1)	Chl a+b (µg ml−1)	Car (µg ml−1)	Chl a/b	Car/Chl a+b
Cs		4.881±0.183	1.721±0.251	6.602±0.708	1.242±0.147	2.994±0.753	0.188±0.040
PDFs	−N	5.402±0.539	1.496±0.247	6.900±0.786	1.564±0.170	3.641±0.336	0.227±0.010
	+N	8.324±0.773	2.894±0.029	11.219±0.755	2.119±0.297	2.876±0.465	0.189±0.012
ODFs	−N	4.608±0.323	1.119±0.224	5.726±0.547	1.379±0.125	4.119±0.772	0.241±0.023
	+N	11.077±0.628	3.930±0.187	15.007±0.781	3.071±0.245	2.819±0.266	0.205±0.009
LDFs	−N	2.671±0.115	0.798±0.080	3.470±0.194	0.743±0.038	3.348±0.385	0.214±0.036
	+N	15.810±0.634	6.504±0.450	22.313±1.057	4.823±0.161	2.431±0.274	0.216±0.007

Values are mean ± SD (t test, n = 3–5, P<0.05).