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Journal of Genetic Engineering and Biotechnology
Fig. 2 | Journal of Genetic Engineering and Biotechnology

Fig. 2

From: Characterization and optimization of extracellular enzymes production by Aspergillus niger strains isolated from date by-products

Fig. 2

Effect of initial pH on production of amylase and cellulase enzymes by A. niger ASP2. Values are mean ± standard error of triplicates. a–f Means in same column of each parameter with different lower case letters differed significantly (p < 0.05). A, B Values in the enzymatic activity (cellulase and amylase) for each parameter with different lower case letters differed significantly (p < 0.05)

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