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Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties

The use of polysaccharides with good film-forming properties in food packaging systems is a promising area of research. Xanthan gum (XG), an extracellular polysaccharide, has many industrial uses, including as a common food additive (E415). It is an effective thickening agent, emulsifier, and stabil...

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Autores principales: Raschip, Irina Elena, Fifere, Nicusor, Lazar, Maria Marinela, Hitruc, Gabriela-Elena, Dinu, Maria Valentina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10378831/
https://www.ncbi.nlm.nih.gov/pubmed/37504407
http://dx.doi.org/10.3390/gels9070528
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author Raschip, Irina Elena
Fifere, Nicusor
Lazar, Maria Marinela
Hitruc, Gabriela-Elena
Dinu, Maria Valentina
author_facet Raschip, Irina Elena
Fifere, Nicusor
Lazar, Maria Marinela
Hitruc, Gabriela-Elena
Dinu, Maria Valentina
author_sort Raschip, Irina Elena
collection PubMed
description The use of polysaccharides with good film-forming properties in food packaging systems is a promising area of research. Xanthan gum (XG), an extracellular polysaccharide, has many industrial uses, including as a common food additive (E415). It is an effective thickening agent, emulsifier, and stabilizer that prevents ingredients from separating. Nevertheless, XG-based polymer films have some disadvantages, such as poor mechanical properties and high hydrophilic features, which reduce their stability when exposed to moisture and create difficulties in processing and handling. Thus, the objective of this work was to stabilize a XG matrix by cross-linking it with glycerol diglycidyl ether, 1,4-butanediol diglycidyl ether, or epichlorohydrin below the freezing point of the reaction mixture. Cryogelation is an ecological, friendly, and versatile method of preparing biomaterials with improved physicochemical properties. Using this technique, XG-based cryogels were successfully prepared in the form of microspheres, monoliths, and films. The XG-based cryogels were characterized by FTIR, SEM, AFM, swelling kinetics, and compressive tests. A heterogeneous morphology with interconnected pores, with an average pore size depending on both the nature of the cross-linker and the cross-linking ratio, was found. The use of a larger amount of cross-linker led to both a much more compact structure of the pore walls and to a significant decrease in the average pore size. The uniaxial compression tests indicated that the XG-based cryogels cross-linked with 1,4-butanediol diglycidyl ether exhibited the best elasticity, sustaining maximum deformations of 97.67%, 90.10%, and 81.80%, respectively.
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spelling pubmed-103788312023-07-29 Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties Raschip, Irina Elena Fifere, Nicusor Lazar, Maria Marinela Hitruc, Gabriela-Elena Dinu, Maria Valentina Gels Article The use of polysaccharides with good film-forming properties in food packaging systems is a promising area of research. Xanthan gum (XG), an extracellular polysaccharide, has many industrial uses, including as a common food additive (E415). It is an effective thickening agent, emulsifier, and stabilizer that prevents ingredients from separating. Nevertheless, XG-based polymer films have some disadvantages, such as poor mechanical properties and high hydrophilic features, which reduce their stability when exposed to moisture and create difficulties in processing and handling. Thus, the objective of this work was to stabilize a XG matrix by cross-linking it with glycerol diglycidyl ether, 1,4-butanediol diglycidyl ether, or epichlorohydrin below the freezing point of the reaction mixture. Cryogelation is an ecological, friendly, and versatile method of preparing biomaterials with improved physicochemical properties. Using this technique, XG-based cryogels were successfully prepared in the form of microspheres, monoliths, and films. The XG-based cryogels were characterized by FTIR, SEM, AFM, swelling kinetics, and compressive tests. A heterogeneous morphology with interconnected pores, with an average pore size depending on both the nature of the cross-linker and the cross-linking ratio, was found. The use of a larger amount of cross-linker led to both a much more compact structure of the pore walls and to a significant decrease in the average pore size. The uniaxial compression tests indicated that the XG-based cryogels cross-linked with 1,4-butanediol diglycidyl ether exhibited the best elasticity, sustaining maximum deformations of 97.67%, 90.10%, and 81.80%, respectively. MDPI 2023-06-29 /pmc/articles/PMC10378831/ /pubmed/37504407 http://dx.doi.org/10.3390/gels9070528 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Raschip, Irina Elena
Fifere, Nicusor
Lazar, Maria Marinela
Hitruc, Gabriela-Elena
Dinu, Maria Valentina
Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties
title Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties
title_full Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties
title_fullStr Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties
title_full_unstemmed Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties
title_short Ice-Templated and Cross-Linked Xanthan-Based Hydrogels: Towards Tailor-Made Properties
title_sort ice-templated and cross-linked xanthan-based hydrogels: towards tailor-made properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10378831/
https://www.ncbi.nlm.nih.gov/pubmed/37504407
http://dx.doi.org/10.3390/gels9070528
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