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Comparison of several mathematical models for describing the joint effect of temperature and ph on glucanex activity
Author(s) -
Prieto Miguel Angel,
Vázquez José Antonio,
Murado Miguel Anxo
Publication year - 2011
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1002/btpr.733
Subject(s) - laminarin , curdlan , arrhenius equation , protonation , chemistry , thermodynamics , work (physics) , mathematics , biological system , polysaccharide , organic chemistry , physics , biology , activation energy , ion
The aim of the present work was to evaluate with different statistical criteria the suitability of nine equations for describing and optimizing the simultaneous effect of temperature and pH on glucanex activity using two characteristic polysaccharides (curdlan and laminarin) as substrates. The most satisfactory solutions were found with an empirical equation constituted with parameters of practical interest (Rosso model), and a hybrid model between the Arrhenius equation and the mathematical expression generated by the protonation‐hydroxylation mechanism (Tijskens model). The joint optimal values of pH and temperature calculated with the Rosso model were obtained at 4.64 and 50°C with curdlan and 4.64 and 48°C using laminarin as substrate. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2012