Food Processing in the Future: Non-Thermal Technologies

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Physics and (Bio)Chemistry".

Deadline for manuscript submissions: 10 June 2026 | Viewed by 350

Special Issue Editors

School of Food and Biological Engineering, Jiangsu University, Zhenjiang 210031, China
Interests: ultrasound; non-thermal; food physics; bio-chemistry
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Guest Editor
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
Interests: screening and modification of extreme microorganisms and enzymes; structure and function of enzyme; controlled enzymolysis technology; fermentation
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Special Issue Information

Dear Colleagues,

Non-thermal treatment technology, as an emerging direction in the field of food processing, is gradually becoming a research hotspot. Through means such as ultrasound, pulsed electric fields, plasma and high-pressure processing, including sterilization, can be achieved under low-temperature conditions, avoiding the damage to food quality and nutrition caused by traditional thermal treatment. Its mechanism of action significantly affects the physical and biochemical properties of food. Non-thermal processing can effectively maintain the colour, flavour and nutrition of food and provide a new way for the development of functional foods. The in-depth research in this field is of great significance in meeting consumers' demands for high-quality food and promoting the innovation and development of the food industry. We look forward to colleagues continuously exploring the application potential of non-thermal treatment technology and contributing more wisdom to the upgrading of food processing technology and the improvement of food quality.

Dr. Lei Zhang
Prof. Dr. Xianli Gao
Guest Editors

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Keywords

  • non-thermal
  • food physics
  • bio-chemistry
  • food processing
  • mechanism of action
  • quality

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Published Papers (1 paper)

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Research

18 pages, 4543 KB  
Article
Propagation Characteristics of Multi-Frequency Arc-Shaped Flat-Plate Ultrasound in Xanthan Gum Viscous Systems and Its Influence on Rheological Properties
by Lei Zhang, Haiyang Zhang, Ruonan Wang, Yujing Yan, Wenqi Zheng, Yan Shen, Xiaoyu Chai, Hafida Wahia, Chenglin Li, Zhenyuan Hu, Haile Ma and Cunshan Zhou
Foods 2025, 14(24), 4226; https://doi.org/10.3390/foods14244226 - 9 Dec 2025
Viewed by 250
Abstract
The solubility and rheological properties of high-molecular-weight xanthan gum (XG) are crucial to its functional performance and determine its applications. Ultrasound modifies these properties mainly by altering acoustic propagation in viscous systems, which depends strongly on concentration and frequency mode. In this work, [...] Read more.
The solubility and rheological properties of high-molecular-weight xanthan gum (XG) are crucial to its functional performance and determine its applications. Ultrasound modifies these properties mainly by altering acoustic propagation in viscous systems, which depends strongly on concentration and frequency mode. In this work, the propagation behavior of three frequency modes (33 kHz mono-frequency, 20–40 kHz dual-frequency, and 20–50–68 kHz triple-frequency) of arc-shaped flat-plate ultrasound was systematically investigated in XG solutions, as well as their effects on solubility and rheological properties. Results showed that multi-frequency ultrasound generated stronger and more uniform acoustic fields, maintaining higher space peak temporal peak acoustic intensity (ISPTP) over a wide concentration range, which was superior to the significant attenuation observed in mono-frequency mode above 10.0 g·L−1. Ultrasonic treatment effectively increased solubility from 62.0 to 63.5% (untreated) to a maximum of 85.6% in the 20–40 kHz group. In terms of rheology, ultrasound reduced viscosity and altered viscoelastic behavior by disrupting the molecular network, with multi-frequency modes showing greater effects at higher concentrations. Surface tension decreased to a minimum of 58.4 mN·m−1 under mono-frequency treatment. Frequency sweep and creep recovery tests indicated enhanced chain mobility and improved structural recovery after ultrasound. Microstructure analysis confirmed fiber fragmentation and the formation of a microporous structure, especially under multi-frequency modes. Overall, the key mechanism lies in the ability of multi-frequency ultrasound to maintain effective acoustic propagation in viscous media, thereby enhancing solubility and modulating rheological behavior. Full article
(This article belongs to the Special Issue Food Processing in the Future: Non-Thermal Technologies)
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