Preparation, Structure-Property Relationships, and Applications of Emulsion Gels

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

Deadline for manuscript submissions: 31 December 2025 | Viewed by 2711

Special Issue Editors


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Guest Editor
Department of Food Science, Cornell University, Ithaca, NY 14853, USA
Interests: starch modification; emulsion; soft matter; hydrocolloid

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Guest Editor
Department of Biotechnology and Food Engineering, and Key Laboratory of Science and Engineering for Health and Medicine of Guangdong Higher Education Institutes, Guangdong Technion-Israel Institute of Technology, Shantou 515063, China
Interests: starch; polysaccharides: hydrocolloids; bioactive compounds

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Guest Editor
Hydrocolloid Research Centre, University of Chester, Chester CH1 4BJ, UK
Interests: hydrocolloids gels; structure-function relationship of hydrocolloids; molecular assemblies; formulations; emulsion technology; encapsulation and radiation chemistry of hydrocolloids

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Guest Editor
State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
Interests: fruit and vegetable vacuum frying and drying technology; storage stability of fried food; quality analysis of frying oil; special fruit and vegetable juice processing
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Special Issue Information

Dear Colleagues,

Emulsion gels represent a unique class of materials that combine the properties of oil-water biphasic systems and gel networks, offering distinct structural and functional attributes. The preparation of emulsion gels often involves interactions between colloidal droplets and gel-forming agents resulting in matrices with semi-solid rheological behavior. Depending on their composition, these systems can serve a variety of applications, such as food structuring agents, delivery vehicles in pharmaceuticals, and components in personal care.

Despite the promising potential of emulsion gels, challenges remain in exploring their structure-property relationships, optimizing their stability, and expanding their application in emerging fields. Understanding the role of interfacial phenomena, gelation kinetics, and the influence of external factors on emulsion gel properties is essential for driving advancements in the field.

The current special issue aims to highlight the latest advancements in the preparation, characterization, and application of emulsion gels. Potential topics include, but are not limited to:

  • Exploring gelling agents and their roles in emulsions;
  • Fundamental studies on emulsion gel formation;
  • Understanding the microstructure and its influence on the functional properties;
  • Applications of emulsion gels;
  • Advanced characterization techniques.

It is our pleasure to invite you to submit manuscripts to this issue, and contribute to address research gaps, propose novel methodologies, and explore interdisciplinary applications.

Dr. Peilong Li
Dr. Tongze Zhang
Prof. Dr. Saphwan Al-Assaf
Prof. Dr. Liuping Fan
Guest Editors

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 100 words) can be sent to the Editorial Office for announcement on this website.

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

  • emulsion
  • gel
  • polymer
  • oil
  • rheology
  • interfacial phenomena
  • microstructure
  • food structuring
  • bioactive delivery

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Published Papers (2 papers)

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Research

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18 pages, 3159 KB  
Article
Effects of Transglutaminase and Epigallocatechin Gallate on the Structural and Physicochemical Properties of Fish Skin Gelatin from Takifugu rubripes
by Lingyu Han, Yulong Zhang, Bing Hu, Ying Zhang, Jijuan Cao, Jixin Yang and Saphwan Al-Assaf
Gels 2025, 11(9), 725; https://doi.org/10.3390/gels11090725 - 11 Sep 2025
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Abstract
Fish skin gelatin (FG) has garnered considerable attention as a potential substitute for mammalian gelatin. In this study, Takifugu rubripes skin gelatin was chemically modified using transglutaminase (TG) and epigallocatechin gallate (EGCG). Subsequently, the rheological, structural, and physicochemical properties of FG modified with [...] Read more.
Fish skin gelatin (FG) has garnered considerable attention as a potential substitute for mammalian gelatin. In this study, Takifugu rubripes skin gelatin was chemically modified using transglutaminase (TG) and epigallocatechin gallate (EGCG). Subsequently, the rheological, structural, and physicochemical properties of FG modified with varying concentrations of TG and EGCG were systematically examined and compared. As the concentrations of TG and EGCG increased, more extensive interactions occurred in FG, leading to a significant enhancement of gelatin properties. Following modification, the molecular weight of FG proteins increased, and this was accompanied by enhanced surface hydrophobicity and gel strength. Rheological analysis further demonstrated that the viscosity of FG modified with TG and EGCG was higher than that of unmodified FG and was positively correlated with the treatment concentrations of TG and EGCG. Additionally, the results indicated that the effect of TG modification was more pronounced than that of EGCG modification. Overall, this study demonstrates that both TG and EGCG modifications can effectively overcome the inherent limitations of fish skin gelatin, with TG showing superior efficiency as a cross-linking agent. The enhanced thermal stability, gel strength, and rheological properties achieved through these interactions significantly expand the potential applications of fish gelatin in the food industry, making it a more viable alternative to mammalian gelatin. Full article
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Review

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24 pages, 4225 KB  
Review
Recent Advances in Plant-Based Emulsion Gels: Preparation, Characterization, Applications, and Future Perspectives
by Yunfei Huang, Chunmei Li and David Julian McClements
Gels 2025, 11(8), 641; https://doi.org/10.3390/gels11080641 - 13 Aug 2025
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Abstract
Plant-based foods have emerged as a major focus of the modern food industry as it tries to create more sustainable, environmentally friendly, and healthy products. Plant-based emulsion gels (PBEGs) can be used to provide valuable structures, textures, and functions in many plant-based food [...] Read more.
Plant-based foods have emerged as a major focus of the modern food industry as it tries to create more sustainable, environmentally friendly, and healthy products. Plant-based emulsion gels (PBEGs) can be used to provide valuable structures, textures, and functions in many plant-based food applications. For instance, they can be used as a matrix to form semi-solid plant-based meat, fish, egg, or dairy analogs, delivery systems for bioactive compounds in functional foods, and edible inks in 3D food printing. The most common PBEGs used in the food industry consist of oil droplets embedded within an aqueous phase containing a biopolymer network. However, PBEGs may also be formed from high-internal-phase emulsions (HIPEs) or aggregated emulsions. PBEGs combine the benefits of emulsions and gels, such as the ability to encapsulate both polar and non-polar functional ingredients, as well as to create desirable textural attributes. This review summarizes recent advances (2017–2025) in the development and application of PBEGs in the food sector, with a focus on their preparation methods, characterization techniques, and potential applications. The future perspectives and challenges associated with PBEGs are also discussed. Overall, this review provides a useful platform for directing future research efforts and for the practical implementation of PBEGs in plant-based food systems. Full article
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