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Kinetics of continous starch hydrolysis in a membrane reactor

Paolucci-Jeanjean D., Belleville M.P., Rios G.M., Zakhia N.. 2000. Biochemical Engineering Journal, 6 (3) : p. 233-238.

Following a previous study on kinetics of enzymatic starch hydrolysis with Termamyl 1201 (Novo Nordisk) in batch reactor, this paper deals with kinetics in a continuous recycled membrane reactor (CRMR). Starting from results obtained in various working conditions, an equation relating the production rates of small oligosaccharides (DP ranging from 1 to 5) to the sum of concentrations of oligosaccharides with a higher degree of polymerisation is proposed. This equation looks like the one already reported for a batch system, with the exception that in the CRMR the enzyme activity varies: an exponential decay of activity as a function of time must be introduced to smooth carefully data points. (Résumé d'auteur)

Mots-clés : membrane; bioréacteur; hydrolyse enzymatique; amidon; cinétique enzymatique

Thématique : Traitement et conservation des produits alimentaires

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