Kinetics of glucose isomerization to fructose by immobilized glucose isomerase in the presence of substrate protection View Full Text


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Article Info

DATE

1997-12

AUTHORS

A. Converti, M. Del Borghi

ABSTRACT

The activity of immobilized glucose isomerase of Streptomyces murinus has been tested batchwise under different conditions in order to gather the related kinetic parameters necessary to optimize an immobilized enzyme column for the continuous production of high fructose corn syrup (HFCS). To this purpose, the Briggs-Haldane model incorporating an apparent first-order inactivation constant has been used with success. A comparison of the equilibrium constants and of the maximum theoretical conversion yields calculated at different temperatures with those estimated for the native enzyme demonstrates that the immobilization favours the transformation of glucose to fructose only at T > 70 °C, as a possible consequence of a combined effect of catalysis and equilibrium thermodynamics enhancement. Enzyme inactivation has also been tested at different temperatures and sugar concentrations to evaluate the related kinetic parameters under different conditions of substrate protection. More... »

PAGES

27-33

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s004490050406

DOI

http://dx.doi.org/10.1007/s004490050406

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003239368


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