Title
Metabolic system identification and optimization in continuous culture
Abstract
To date, there still exist some uncertain factors in the continuous fermentation of glycerol to 1,3-Propanediol 1,3-PD by Klebsiella pneumoniae because of the limitation in bio-techniques. In this paper, among these uncertain factors, we aim to infer the transport mechanisms of the substrate and the product across the cell membrane of the biomass. On the basis of different inferences of transport mechanisms, we reconstruct various metabolic systems and develop their dynamical systems. To determine the most reasonable metabolic system from all possible ones, we give a quantitative definition of biological robustness and propose an identification model on this basis. An improved Particle Swarm Optimization algorithm is developed to solve the identification model. Numerical results show that the identified system can describe the fermentation process well. Furthermore, to maximize the concentration of 1,3-PD, an optimization model is proposed. Numerical results show that the concentration of 1,3-PD can be increased considerably by employing the obtained optimal strategy.
Year
DOI
Venue
2012
10.1080/00207160.2012.689289
Int. J. Comput. Math.
Keywords
Field
DocType
fermentation process,continuous culture,uncertain factor,dynamical system,identification model,numerical result,optimization model,transport mechanism,continuous fermentation,various metabolic system,reasonable metabolic system,metabolic system identification,dynamic system,system identification
Particle swarm optimization,Mathematical optimization,Robustness (computer science),Dynamical systems theory,Nonlinear dynamical systems,System identification,Mathematics
Journal
Volume
Issue
ISSN
89
10
0020-7160
Citations 
PageRank 
References 
0
0.34
8
Authors
3
Name
Order
Citations
PageRank
Jinggui Gao122.39
Enmin Feng211124.41
Zhilong Xiu34712.56