title: Evaluation of oxygen mass transfer in Aspergillus niger fermentation using data reconciliation.
abstract: Fermentation experiments using Aspergillus niger result in a very viscous broth due to the growth of filamentous microorganism. For viscous fermentation processes, it is difficult to estimate with confidence the volumetric oxygen mass transfer coefficient (K(L)a), which can be used for scale-up or design of bioreactors. In the present study, four methods based on dynamic and stationary approaches were used to measure K(L)a throughout the fermentation. Data reconciliation was used to obtain a more reliable and consistent K(L)a. The K(L)a value obtained by a data reconciliation technique was found to be more reliable since it takes into consideration both the reliability of all measured variables and the accuracy of all mass balance equations.
authors.affiliation: Department of Chemical Engineering, University of Ottawa, Ottawa (ON) K1N 6N5, Canada.
authors.forename: Nilesh
authors.initials: N
authors.lastname: Patel
authors.forename: Jules
authors.initials: J
authors.lastname: Thibault
mesh_terms: D000465:Algorithms; D001234:Aspergillus niger / Q000166:cytology / Q000502:physiology*; D019149:Bioreactors / Q000382:microbiology*; D018929:Cell Culture Techniques / Q000379:methods*; D002455:Cell Division / Q000502:physiology; D003198:Computer Simulation; D008954:Models, Biological; D015233:Models, Statistical; D010100:Oxygen / Q000032:analysis / Q000378:metabolism*; D010101:Oxygen Consumption / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D010100:Oxygen