A multiscale kinetics model for the analysis of starch amylolysis.
Amylases
Digestion
Kinetics
Model
Starch
Journal
International journal of biological macromolecules
ISSN: 1879-0003
Titre abrégé: Int J Biol Macromol
Pays: Netherlands
ID NLM: 7909578
Informations de publication
Date de publication:
01 Feb 2019
01 Feb 2019
Historique:
received:
30
08
2018
revised:
23
10
2018
accepted:
23
10
2018
pubmed:
9
11
2018
medline:
5
4
2019
entrez:
9
11
2018
Statut:
ppublish
Résumé
Simple exponential decaying functions are commonly used for fitting the kinetics of starch digested by amylolytic enzymes. A common assumption is that a sole exponential function can account for the kinetics of the whole digestible starch. Recent studies using logarithm-of-slope (LOS) plots showed that digestion kinetics can exhibit multi-scale behavior, an effect reflecting starch fractions with different digestion characteristics. This work proposed an extension of the widely used Goñi et al.'s model to account for two starch fractions; one fraction linked with fast digestion rate and other with slow digestion rates. The fitting of experimental data was carried out by solving numerically a nonlinear least-squares problem. The estimated parameters have a straightforward interpretation in terms of reaction rates and digestible/resistant starch fractions. Two experimental examples were used for illustrating the performance of the multi-exponential function.
Identifiants
pubmed: 30404765
pii: S0141-8130(18)34607-5
doi: 10.1016/j.ijbiomac.2018.10.161
pii:
doi:
Substances chimiques
Starch
9005-25-8
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
405-409Informations de copyright
Copyright © 2018 Elsevier B.V. All rights reserved.