Table 1.

Final biomass and citrate yields of A. niger NW305 and NW186 grown with varying iron concentrations and/or different supplements in the medium.

Experiment	Strain	Fe	Suppl1	Final biomass (g)	Citrate yield
					(g·g−1 biomass)	(g·g−1 substrate)
Iron	NW305	++	a	0.35 ± 0.02	0.67 ± 0.07	0.02 ± 0.002
Iron	NW305	−	a	0.19 ± 0.02	4.92 ± 0.35	0.11 ± 0.002
Iron	NW186	−	a	0.22 ± 1e−03	21.88 ± 1.51	0.46 ± 0.02
Supplement	NW186	+	a	1.87 ± 0.04	1.80 ± 0.14	0.17 ± 0.03
Supplement	NW186	+	c	3.96 ± 0.09	2.98 ± 0.35	0.31 ± 0.03

¹Suppl: supplement, with a = arginine, c = citrulline