Open AccessCultivation of Aspergillus niger in a pilot plant external‐loop air‐lift bioreactor
Author(s) -
Głuszcz P.,
Michalski H.
Publication year - 1994
Publication title -
fems microbiology reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.91
H-Index - 212
eISSN - 1574-6976
pISSN - 0168-6445
DOI - 10.1111/j.1574-6976.1994.tb00077.x
Subject(s) - bioreactor , aspergillus niger , airlift , biomass (ecology) , biology , food science , chromatography , chemistry , botany , agronomy
Changes of the main hydrodynamic and oxygen transfer parameters during Aspergillus niger cultivation in an external‐loop air‐lift bioreactor of 200 dm 3 operating capacity were investigated. The final average concentrations of biomass and citric acid obtained in batch fermentations were about 17 g 1 ‐1 and 90 g 1 ‐1 , respectively. Significant influence of the increasing biomass concentration on the rheological properties of the broth and operating parameters was found. Volumetric oxygen transfer coefficient. k L a , was found to be dependent on the apparent viscosity of the broth with an exponent of ‐0.984.