Modeling the interaction between the central carbon metabolism of Escherichia coli and bioreactor culture media

被引:4
作者
Ortega-Quintana, Fabian A. [1 ]
Trujillo-Roldan, Mauricio A. [2 ]
Botero-Castro, Hector [3 ]
Alvarez, Hernan [3 ]
机构
[1] Univ Cordoba, Fac Ingn, Programa Ingn Alimentos, Grp Invest Propiedades & Proc Alimentarios GIPPAL, Monteria, Colombia
[2] Univ Nacl Autonoma Mexico, Programa Invest Prod Biomol, Unidad Bioproc, Dept Biol Mol & Biotecnol,Inst Invest Biomed, Ciudad Mexico,AP 70228, Mexico City 04510, DF, Mexico
[3] Univ Nacl Colombia, Grp Invest Proc Dinam Kalman, Medellin, Colombia
关键词
Bioprocess; Dynamic model; Escherichia coli; Modeling analogy; Phenomenology; NEURAL-NETWORK; KINETIC-MODEL; GROWTH-RATE; ACETATE; BATCH; SIMULATION; DIFFUSION; SYSTEM; FLUX; IDENTIFICATION;
D O I
10.1016/j.bej.2020.107753
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
In the bioprocess modeling field, a descriptive methodology that explicity considers the interactions between the environment and cells is lacking. This relationship directly affects all kinetics, which have so far been formulated through empirical relationship. In this research, additional steps were added to a known bioprocess modeling methodology to relate environment and cells to each other. The quantitative validation of the proposed phenomenological-based, semi-physical model was developed for a glucose culture bioprocess carried out by the bacterium Escherichia coll. strain BW25113 (a derivative of E. coll. K-12 strain BD792). The results indicated that the model obtained through the proposed methodology resulted in more accurate predictions than those in the literature using empirical functions for environment-cell relationship modeling. Therefore, predictability of the model can be improved by linking descriptive and explanatory mathematical models of mass transfer to environment-cellular material interaction in bioprocess modeling. Therefore, environment and cells can be explicitly connected with mathematical expressions from chemical process analogies, mass transfer, and phase equilibrium thermodynamic fundamentals. Thus, valuable model information and total knowledge of the bioprocesses phenomena is obtained. This information is necessary for understanding the integral operation of a bioreactor and, thus, for improving the design, optimization, automatic control, and state estimation of the bioprocess.
引用
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页数:12
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