Application of iterative robust model‐based optimal experimental design for the calibration of biocatalytic models. (14th August 2017)

• Record Type: Journal Article
• Authors: Van Daele, Timothy; Gernaey, Krist V.; Ringborg, Rolf H.; Börner, Tim; Heintz, Søren; Van Hauwermeiren, Daan; Grey, Carl; Krühne, Ulrich; Adlercreutz, Patrick; Nopens, Ingmar
• Is Part Of: Biotechnology progress. Volume 33:Number 5(2017)
• Page Start: 1278
• Page End: 1293
• Publication Date: 2017-08-14
• Subjects: biocatalysis -- robust model‐based optimal experimental design -- ω‐transaminase -- curvature -- Fisher Information Matrix; Biotechnology -- Periodicals; Food industry and trade -- Periodicals; Bioengineering -- Periodicals; 660.6
• DOI: 10.1002/btpr.2515
• Languages: English
• ISSNs: 8756-7938

Abstract

Abstract : The aim of model calibration is to estimate unique parameter values from available experimental data, here applied to a biocatalytic process. The traditional approach of first gathering data followed by performing a model calibration is inefficient, since the information gathered during experimentation is not actively used to optimize the experimental design. By applying an iterative robust model‐based optimal experimental design, the limited amount of data collected is used to design additional informative experiments. The algorithm is used here to calibrate the initial reaction rate of an ω‐transaminase catalyzed reaction in a more accurate way. The parameter confidence region estimated from the Fisher Information Matrix is compared with the likelihood confidence region, which is not only more accurate but also a computationally more expensive method. As a result, an important deviation between both approaches is found, confirming that linearization methods should be applied with care for nonlinear models. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:1278–1293, 2017