Production of D-galacturonic acid from agricultural residues with Aspergillus niger in a stirred-tank reactor

Dominik Schäfer, doctoral thesis Technical University of Munich, 2022

The pectinolytic activities of different Aspergillus niger strains were characterized in controlled stirred-tank bioreactors in a comparative study. Suitable reaction conditions for hydrolysis of pectin-rich extracted sugar beet press pulp were identified using the enzyme mix produced by Aspergillus niger. A subsequent process integration of enzyme production with Aspergillus niger and hydrolysis of extracted sugar beet press pulp in a stirred-tank bioreactor enabled efficient production of D-galacturonic acid.


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