Article (Scientific journals)
Influence of sodium alginate concentration on microcapsules properties foreseeing the protection and controlled release of bioactive substances
Essifi, Kamal; BERRAAOUN, Doha; Ed-Daoui, Aberrahim et al.
2021In Journal of Chemistry
Peer Reviewed verified by ORBi
 

Files


Full Text
5531479.pdf
Publisher postprint (3.45 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
bio-active substance; encapsulation; controlled release
Abstract :
[en] To understand the abilities of Ca-alginate microcapsules and their specific applications in different fields, it is necessary to determine the physicochemical and structural properties of those formulated microcapsules. In this work, we aimed to study the effect of alginate concentration in the improvement of the encapsulation efficiency (EE) and on the release of phenolic and flavonoid substances. *e relationship between the structure of the encapsulated bioactive substance and Ca-alginate network and their effect on the EE and release kinetics have been investigated. *e incorporation, structure, morphology, and phase properties of all elaborated materials were characterized by UV-spectroscopy, Fourier transform infrared (ATR-FTIR), scanning electron microscope (SEM), and X-ray diffraction (DRX). *e results indicate that increasing the polymer concentration increases the EE and decreases the loading capacity (LC), whereas the effect of alginate polymer concentration on the release was not observed. *e release study of bioactive substances showed that the release kinetics is relatively dependent on the structure and the physicochemical characteristics of the bioactive substance, which became clear when the encapsulated compounds were released from the core of calcium alginate microcapsules. *us, it could be concluded that the pores size of the Ca-alginate network is smaller than the volume of the crocin molecule (2794.926A˚ 3 ) and higher than the volume of the gallic acid molecule (527.659A˚ 3 ). For the same microcapsules system, the release mechanism is affected by the structure and physicochemical properties of the encapsulated molecules.
Disciplines :
Agriculture & agronomy
Chemistry
Author, co-author :
Essifi, Kamal
BERRAAOUN, Doha
Ed-Daoui, Aberrahim
Brahmi, Mohamed
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Tahani, Abdesselam
Language :
English
Title :
Influence of sodium alginate concentration on microcapsules properties foreseeing the protection and controlled release of bioactive substances
Publication date :
August 2021
Journal title :
Journal of Chemistry
ISSN :
2090-9063
eISSN :
2090-9071
Publisher :
Hindawi Publishing Corporation, New-York, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 August 2021

Statistics


Number of views
62 (4 by ULiège)
Number of downloads
43 (3 by ULiège)

Scopus citations®
 
17
Scopus citations®
without self-citations
14
OpenCitations
 
8

Bibliography


Similar publications



Contact ORBi