Rate of fatty acid transport in glassy biopolymers: A free volume based predictive approach

Paramita, V and Kasapis, S 2018, 'Rate of fatty acid transport in glassy biopolymers: A free volume based predictive approach', Food Hydrocolloids, vol. 78, pp. 128-131.


Document type: Journal Article
Collection: Journal Articles

Title Rate of fatty acid transport in glassy biopolymers: A free volume based predictive approach
Author(s) Paramita, V
Kasapis, S
Year 2018
Journal name Food Hydrocolloids
Volume number 78
Start page 128
End page 131
Total pages 4
Publisher Elsevier B.V.
Abstract Metastable properties of biopolymer networks affect significantly the diffusion kinetics of bioactive compounds. That was shown to be the case in high solid samples of protein and polysaccharide supporting a homogeneous distribution of polyunsaturated fatty acids. Thermomechanical behaviour of these matrices was characterised in relation to their glass transition temperature (Tg). A free volume theory of diffusion was considered to treat transport phenomena of fatty acids within glassy polymers. It was found that at T > Tg the effective diffusion coefficient of microconstituent transport would increase in accordance with the free volume of the polymer matrix. Fitting experimental diffusivity data in glassy polymers to a free volume based theory generates a two-parameter equation that calculates the extent of molecular interaction between macromolecule and microconstituent. Gradual substitution of polymer with small-molecule co-solute, glucose syrup in this case, induces a plasticising effect that profoundly affects the level of interaction, hence the diffusion of fatty acids in the condensed biomaterial. © 2017
Subject Food Chemistry and Molecular Gastronomy (excl. Wine)
Keyword(s) Decoupling parameter
Diffusion coefficient
Free volume theory
Glass transition
DOI - identifier 10.1016/j.foodhyd.2017.04.024
Copyright notice © 2017 Published by Elsevier Ltd.
ISSN 0268-005X
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Altmetric details:
Access Statistics: 4 Abstract Views  -  Detailed Statistics
Created: Thu, 06 Dec 2018, 10:39:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us