Applications and Trends for Ultrasound in Food Processing

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

Deadline for manuscript submissions: 15 February 2026 | Viewed by 512

Special Issue Editors


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Guest Editor
Department of Family and Consumer Sciences, North Carolina A&T State University, Greensboro, NC, USA
Interests: innovative food processing technologies; ultrasound technology; food safety engineering
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Guest Editor
Department of Food Engineering, Igdir University, Igdir, Turkey
Interests: non-thermal processing; ultrasound technology; functional foods; fruit–vegetable processing; drying technology

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Guest Editor
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
Interests: gastrointestinal protection and encapsulation delivery of probiotics; novel approaches for food engineering; hydrocolloids and emulsions; sonoprocessing; edible coatings; food packaging
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Special Issue Information

Dear Colleagues,

We are pleased to introduce this Special Issue on “Applications and Trends for Ultrasound in Food Processing,” which showcases the latest advancements and innovative uses of ultrasound technology across the food industry. Ultrasound has gained significant attention as a versatile, non-thermal processing method offering numerous benefits for food quality, safety, and functionality while preserving nutritional and sensory attributes. Its ability to enhance extraction, inactivate microorganisms, improve texture, and increase the efficiency of drying and emulsification processes makes it a powerful tool in modern food processing, addressing consumer demand for minimally processed, fresh-like products.

Despite its promising advantages, challenges such as process optimization and industrial-scale implementation remain, and recent studies have focused on overcoming these barriers. Several contributions emphasize ultrasound’s role in functional food development and shelf-life extension of fresh and minimally processed products.

We believe this compilation provides valuable insights for researchers, food engineers, industry professionals, and policymakers seeking to harness ultrasound technology to meet the evolving demands of food production, safety, and sustainability. We invite you to explore these contributions that collectively advance the understanding and practical applications of ultrasound in modern food processing.

Prof. Dr. Hao Feng
Dr. Gulcin Yildiz
Prof. Dr. Wenjun Wang
Guest Editors

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Keywords

  • ultrasound technology
  • extraction
  • synergistic processing technologies
  • drying enhancement
  • modification of functional components
  • functional foods
  • shelf-life extension
  • food safety
  • process optimization
  • cavitation

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Published Papers (1 paper)

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Research

15 pages, 2710 KB  
Article
Ultrasound-Assisted Preparation of Chitosan Oligosaccharide-Stabilized Thyme Oil-in-Water Nanoemulsions: Enhanced Storage Stability and Antimicrobial Properties
by Hao Wang, Qirong Dong, Wenyue Wang, Jin Chen, Wenjun Wang, Zhongxiang Fang and Runan Zhao
Foods 2025, 14(17), 2930; https://doi.org/10.3390/foods14172930 - 22 Aug 2025
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Abstract
Thyme oil (TO), an aromatic compound derived from Thymus species, exhibits potent antioxidant and antibacterial properties. To address its defects of high volatility and susceptibility to oxidation, TO was encapsulated in chitosan oligosaccharide (COS)-stabilized oil-in-water emulsions using a two-step emulsification method with [...] Read more.
Thyme oil (TO), an aromatic compound derived from Thymus species, exhibits potent antioxidant and antibacterial properties. To address its defects of high volatility and susceptibility to oxidation, TO was encapsulated in chitosan oligosaccharide (COS)-stabilized oil-in-water emulsions using a two-step emulsification method with ultrasound assistance. The droplet size of TO-in-water emulsions decreased significantly with increasing ultrasound power and treatment time, achieving sizes below 240 nm with an encapsulation efficiency exceeding 90%. The COS interface layer, combined with polyvinyl alcohol (PVA), effectively enhanced emulsion stability by preventing phase separation and maintaining droplet size and zeta potential during storage. Compared to its free form, the encapsulation of TO in the emulsion significantly improved the antioxidant activities, as evidenced by the enhanced ABTS (1.25-fold) and DPPH (1.33-fold) radical scavenging activities, at equivalent concentrations. Additionally, the TO emulsions exhibited superior antibacterial and antifungal properties, with minimum inhibitory concentration (MIC) values reduced by half and effective inhibition of Escherichia coli, Staphylococcus aureus, and Penicillium italicum growth. These findings highlight the potential of TO emulsions as an effective delivery system for improving the functionality and stability of TO in fresh food preservation applications. Full article
(This article belongs to the Special Issue Applications and Trends for Ultrasound in Food Processing)
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