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. 2017 Feb 1;16:20. doi: 10.1186/s12934-017-0636-6

Fig. 6.

Fig. 6

Effect of adipic acid and pH on spore formation of A. niger. Agar plates with triplicate cultures of A. niger, 5 days after inoculation at pH 6 (above) and pH 5 (below) at various adipic acid concentrations. Due to solubility issue there is no plate at 684 mM adipic acid for pH 5