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  • 标题:Optimizing bacterial resource allocation: metabolite production in continuous bioreactors ⁎
  • 本地全文:下载
  • 作者:Agustín Gabriel Yabo ; Jean-Luc Gouzé
  • 期刊名称:IFAC PapersOnLine
  • 印刷版ISSN:2405-8963
  • 出版年度:2020
  • 卷号:53
  • 期号:2
  • 页码:16753-16758
  • DOI:10.1016/j.ifacol.2020.12.1146
  • 语种:English
  • 出版社:Elsevier
  • 摘要:AbstractWe show preliminary results addressing the problem of resource allocation in bacteria in the continuous bioreactor framework. We propose a coarse-grained self-replicator dynamical model that accounts for the microbial population growth inside a continuous bioreactor, and we study its asymptotic behavior. This is done through a dynamical systems analysis approach, in order to provide conditions for the persistence of the bacterial population. We then study the two most relevant cases of steady-state production in this scheme: 1) biomass production, classical in high-tech industrial processes as well as in research environments; and 2) metabolite production through the introduction of a heterologous metabolic pathway. Both problems are explored in terms of the internal allocation control—which can be externally disrupted—and the constant volumetric flow of the bioreactor; and analyzed through a numerical approach. The resulting two-dimensional optimization problem is defined in terms of Michaelis-Menten kinetics using the parameter values of previous works, and taking into account the constraints for the existence of the equilibrium of interest.
  • 关键词:Keywordsdynamicscontrolmodelingidentificationindustrial biotechnology
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