Figure 3
Itaconic-, citric- and oxalic acid production in fermentation media of A. niger . Organic acid content (itaconic- citric- and oxalic- acid) of A. niger strain AB 1.13 CAD pyr + in Medium 12 with varying copper concentration. (♦—Medium12-Cu with 0.005 mM Cu2+; ■—Medium12 with 0.01 mM Cu2+ ; ▲—Medium12 + Cu with 0.02 mM Cu2+) (EFT: Electronic Fermentation Time).