Table 2.

Effect of initial exogenous C/N ratio on cell proliferation and maximum anatoxin yield of C. issatschenkoi, and C and N concentrations in growth mediums with different C/N ratios.

Group		C/N Value	C (mM)	N (mM)	Cell Productivity (mg Chl a L−1·d−1)	Maximum Intracellular Anatoxins Yield (µg/mg DW)
Low C/N batch	A	0.134	0.094	0.706	0.145 ± 0.009	6.570 ± 0.272
	B	0.267	0.189	0.706	0.153 ± 0.007	6.631 ± 0.800
	C	0.401	0.283	0.706	0.147 ± 0.000	6.668 ± 0.989
	D	0.535	0.377	0.706	0.158 ± 0.012	7.131 ± 1.063
	E	0.692	0.489	0.706	0.151 ± 0.018	7.188 ± 1.147
High C/N batch	D-1	0.535	0.377	0.706	0.173 ± 0.012	9.030 ± 0.682 c
	F	2.673	1.887	0.706	0.174 ± 0.006	6.243 ± 1.944 b
	G	5	3.29	0.706	0.166 ± 0.002	4.364 ± 1.102 b
	H	11	7.663	0.706	0.168 ± 0.002	2.975 ± 1.335 a

^a–c Values indicated by the same letter represent no significant difference, p = 0.05 by Tukey’s test.