Abstract

The total formation of β-glucosidase by the wild strain of Aspergillus niger ZIMET 43 746 is non-growth-associated. In discontinuous culture the total β-glucosidase activity related to the mycelium is incresing with the age of the mycelium. The complete release of the remaining mycelial-associated β-glucosidase is dependent on the structure of the mycelium. In the cases of the mycelium forms pellets throughout the growth phase than the release of β-glucosidase is accelerated compared to the release from loosly branched mycelium. Incresing shear stress caused by increasing of the impeller speed promotes the formation of pellets.

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