We describe microbial growth and production of value-added chemical compounds in a continuous bioreactor through a dynamical system and we study the local stability of the equilibrium of interest by means of the classical Routh–Hurwitz criterion. The mathematical model considers various biological and structural parameters related to the bioprocess (concentration of substrate inflow, constants of the microchemical reactions, steady-state mass fractions of intracellular proteins, etc.) and thus, the stability condition is given in terms of these parameters. This boils down to deciding the consistency of a system of polynomial inequalities over the reals, which is challenging to solve from an analytical perspective, and out of reach even for traditional computational software designed to solve such problems. We show how to adapt classical techniques for solving polynomial systems to cope with this problem within a few minutes by leveraging its structural properties, thus completing the stability analysis of our model. The paper is accompanied by a Maple worksheet available online.
Mots-clés : continuous bioreactors, self-replicator model, bacterial growth, local stability
@article{MSIA_2023__12_1_175_0, author = {Agust{\'\i}n G. Yabo and Mohab Safey El Din and Jean-Baptiste Caillau and Jean-Luc Gouz\'e}, title = {Stability analysis of a bacterial growth model through computer algebra}, journal = {MathematicS In Action}, pages = {175--189}, publisher = {Soci\'et\'e de Math\'ematiques Appliqu\'ees et Industrielles}, volume = {12}, number = {1}, year = {2023}, doi = {10.5802/msia.37}, language = {en}, url = {https://msia.centre-mersenne.org/articles/10.5802/msia.37/} }
TY - JOUR AU - Agustín G. Yabo AU - Mohab Safey El Din AU - Jean-Baptiste Caillau AU - Jean-Luc Gouzé TI - Stability analysis of a bacterial growth model through computer algebra JO - MathematicS In Action PY - 2023 SP - 175 EP - 189 VL - 12 IS - 1 PB - Société de Mathématiques Appliquées et Industrielles UR - https://msia.centre-mersenne.org/articles/10.5802/msia.37/ DO - 10.5802/msia.37 LA - en ID - MSIA_2023__12_1_175_0 ER -
%0 Journal Article %A Agustín G. Yabo %A Mohab Safey El Din %A Jean-Baptiste Caillau %A Jean-Luc Gouzé %T Stability analysis of a bacterial growth model through computer algebra %J MathematicS In Action %D 2023 %P 175-189 %V 12 %N 1 %I Société de Mathématiques Appliquées et Industrielles %U https://msia.centre-mersenne.org/articles/10.5802/msia.37/ %R 10.5802/msia.37 %G en %F MSIA_2023__12_1_175_0
Agustín G. Yabo; Mohab Safey El Din; Jean-Baptiste Caillau; Jean-Luc Gouzé. Stability analysis of a bacterial growth model through computer algebra. MathematicS In Action, Maths Bio, Tome 12 (2023) no. 1, pp. 175-189. doi : 10.5802/msia.37. https://msia.centre-mersenne.org/articles/10.5802/msia.37/
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