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Kinetic study of fructose‐glucose isomerization in a recirculation reactor
Author(s) -
CamachoRubio F.,
JuradoAlameda E.,
GonzálezTello P.,
LuzónGonzález G.
Publication year - 1995
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450730618
Subject(s) - isomerization , chemistry , kinetics , fructose , hexose , kinetic energy , mass transfer , reversible reaction , thermodynamics , chromatography , catalysis , organic chemistry , enzyme , physics , quantum mechanics
We have studied the equilibrium and kinetics of fructose‐to‐glucose isomerization using a commercial immobilized glucose isomerase, Sweetzyme T® (from NOVO), in a packed‐bed recirculation reactor which enabled us to eliminate the influence of external‐mass transfer and which could function as a differential reactor when a sufficient flow rate was used. The results obtained have also been corrected with regard to the influence of internal transport in the immobilized enzyme particles. Isomerization kinetics is a pseudo first‐order reversible reaction in the ranges studied: 303–333 K , pH 7.5 and 0.5 to 2.0 mol/L hexose concentrations. We compare our results with those found in the literature, and propose equations for the influence of temperature on the equilibrium and on the kinetic constants.