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Mathematical modeling of gallic acid release from chitosan films with grape seed extract and carvacrol.

Abstract：

:Controlled release of antimicrobial and antioxidant compounds from packaging films is of utmost importance for extending the shelf-life of perishable foods. This study focused on the mathematical modeling of gallic acid release into an aqueous medium from three chitosan films, formulated with grape seed extract (GSE) and carvacrol. We quantified the release by HPLC technique during 30days at three temperatures (5, 25 and 45°C). The diffusion coefficients, varying with temperature according to an Arrhenius-type relationship, and the respective activation energies for Film-1 and Film-2 were, respectively [Formula: see text] m2s-1 and [Formula: see text] m2s-1, Ea1=58kJmol-1 and Ea2=60kJmol-1 as obtained from the Fickian fit. The low concentrations of gallic acid released by Film-3 could not be detected by HPLC, therefore the respective diffusion coefficient was not estimated. This study will help with the development and optimization of active packaging (AP) films aiming at improved food preservation and shelf-life extension.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Rubilar JF,Cruz RMS,Zuñiga RN,Khmelinskii I,Vieira MC

doi

10.1016/j.ijbiomac.2017.05.187

subject

Has Abstract

pub_date

2017-11-01 00:00:00

pages

197-203

issue

Pt A

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(16)33091-4

journal_volume

104

pub_type

杂志文章

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