Food Gels: Structure and Properties (3rd Edition)

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Analysis and Characterization".

Deadline for manuscript submissions: 30 September 2026 | Viewed by 598

Special Issue Editor


grade E-Mail Website
Guest Editor

Special Issue Information

Dear Colleagues,

Recently, some food components (polysaccharides and proteins) have been found to have good gelling properties and form viscous dispersions and/or gels when dispersed in water. Generally, these food colloids also exhibit thickening, gelling, emulsifying, and stabilization properties. Gel formation is an interesting phenomenon that involves the association or cross-linking of polymer chains to form a three-dimensional network, which can trap or immobilize the water within it to form a rigid structure that is resistant to flow. For some typical food colloids, they become viscoelastic, exhibiting the characteristics of both a liquid and a solid, whose interactions mainly include physical interaction (e.g., chain entanglements, van der Waals forces, hydrogen bonds, ionic interactions) and/or chemical cross-linking. Notably, the textural and sensory properties of food gels depend on the type of hydrocolloid used, the selection of which is very important to the design of a specific food formulation. The common food colloids used as gelling agents include alginate, pectin, carrageenan, gellan, gelatin, agar, modified starch, methyl cellulose, and hydroxypropylmethyl cellulose, etc. In addition, some thickening-type colloids can induce gel formation, including starch, xanthan, guar gum, locust bean gum, gum tragacanth, and gum arabic. Some other proteins or polysaccharides can also form gels under specific physical and/or chemical conditions.

This Special Issue focuses on the recent research and advances in food gels, including structure and applications. Additionally, we welcome contributions regarding the preparation and characterization of food gels extracted from different raw materials.

Dr. Hongjie Dai
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Gels is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biopolymer
  • gel
  • hydrogel
  • structure
  • emulsion
  • food application
  • 3D printing
  • interaction

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Related Special Issues

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

27 pages, 9868 KB  
Article
Sonication–Freezing–Assisted Extraction of Chia Seed Mucilage: Functional and Structure–Rheology Relationships and Molecular Weight Determination
by Monserrat Sanpedro-Díaz, Esteban F. Medina-Bañuelos, Ma. de la Paz Salgado-Cruz, Benjamín M. Marín-Santibáñez, Alitzel Belem García-Hernández, Ana Luisa Gómez-Gómez and Diana Maylet Hernández-Martínez
Gels 2026, 12(5), 394; https://doi.org/10.3390/gels12050394 - 2 May 2026
Viewed by 301
Abstract
Chia seed mucilage (CSM) is a promising plant-derived hydrocolloid characterized by unique physicochemical and functional properties that are strongly influenced by the extraction methodology. In this research, an optimized sonication–freezing-assisted extraction (SFAE) process was developed to obtain mucilage while preserving its structural integrity. [...] Read more.
Chia seed mucilage (CSM) is a promising plant-derived hydrocolloid characterized by unique physicochemical and functional properties that are strongly influenced by the extraction methodology. In this research, an optimized sonication–freezing-assisted extraction (SFAE) process was developed to obtain mucilage while preserving its structural integrity. Results indicate that the extracted mucilage has a high total dietary fiber content of 75.87% and a moderate protein level of 8.71%. Fourier transform infrared spectroscopy (FTIR) confirmed the presence of hydroxyl and ionized carboxylate (COO) groups associated with uronic acids, highlighting the anionic and polyelectrolyte nature of the system. Rheological characterization of optimized-CSM revealed Newtonian behavior in dilute solutions, indicating minimal intermolecular interactions and permitting accurate measurement of intrinsic viscosity and viscosity-average molecular weight. A critical overlap concentration (c** ≈ 0.2% w/v) was identified, marking the transition to semi-dilute regimes, chain entanglement, and the onset of shear-thinning and viscoplastic behavior. Functionally, the optimized-CSM exhibited high water holding capacity and competitive emulsifying properties (emulsion activity index (EAI): 62.50%; emulsion stability index (ESI): 49.32%), attributed to synergistic interactions between proteins and polysaccharides. Overall, this work provides new insights into how processing conditions influence the chemical composition and molecular structure, which fundamentally govern the rheological and functional performance of CSM. These findings underscore its potential as a versatile hydrocolloid for food and biomedical applications. Full article
(This article belongs to the Special Issue Food Gels: Structure and Properties (3rd Edition))
Show Figures

Figure 1

Back to TopTop