Premium
Cybernetic model for synthesis of poly‐β‐hydroxybutyric acid in Alcaligenes eutrophus
Author(s) -
yoo Seung,
Kim WooSik
Publication year - 1994
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260431107
Subject(s) - catabolism , cybernetics , flexibility (engineering) , fermentation , chemistry , metabolism , biological system , biochemistry , computer science , biology , mathematics , artificial intelligence , statistics
The pathway of poly‐β‐hydroxybutyric acid (PHB) exhibits a mode of transcriptional control induced by environmental stress. A new cybernetic model for coordinated regulation of stress‐induced metabolism was developed to predict the growth and the synthesis of PHB in Alcaligenes eutrophus . A plausible objective for this control is optimization of acetyl‐CoA utilization so that the cells have a high degree of flexibility in their catabolism. The state equation for key protein synthesis was assumed to have a dependence on the nonlinear control variable. The proposed model can demonstrate the mixed‐growth‐associated synythesis of PHB. Reported unstructured models were compared statistically with the result of the simulation derived from the proposed model using the experimental data of this study and the literature. The proposed model appeared to provide an excellent description for the overall fermentation range. © 1994 John Wiley & Sons, Inc.