Non-Thermal Technologies for Food Safety and the Preservation of Bioactive Compounds in Fruit and Vegetable-Based Products

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

Deadline for manuscript submissions: 31 December 2025 | Viewed by 533

Special Issue Editors


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Guest Editor
Applied Microbiology Laboratory, Department of Food Science and Chemical Technology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
Interests: non-thermal technologies; food safety; predictive microbiology; bioactive compounds

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Guest Editor
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
Interests: functional foods; by-products valorization; dehydration; food engineering
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Special Issue Information

Dear Colleagues,

The food industry has great potential for innovation to improve food safety, healthiness, taste, and sustainability. Non-thermal technologies have been developed to minimize the loss of food quality that occurs during traditional thermal processing. These advanced processes keep the temperature below the levels used in conventional thermal processing, ensuring food safety while preserving essential nutrients, bioactive compounds, texture, color, and flavor.

This Special Issue aims to publish research and review papers on advancements in non-thermal food technologies applied to fruit and vegetable-based products. Technologies such as high hydrostatic pressure, cold atmospheric plasma, pulsed electric fields, ultraviolet or pulsed light, high-intensity ultrasound, among others, will be considered. It will comprehensively address various aspects of non-thermal food processing innovations and will encompass microbial inactivation kinetics, the impact on bioactive compounds and enzymes, quality factors, shelf life studies, and sustainability issues such as reducing energy and water requirements.

Dr. Cielo D. Char
Dr. Luis Puente
Guest Editors

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Keywords

  • non-thermal technologies
  • food safety
  • foodborne pathogens
  • bioactive compounds
  • antioxidants
  • high hydrostatic pressure
  • cold atmospheric plasma
  • pulsed electric fields
  • ultraviolet light
  • pulsed light

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Published Papers (1 paper)

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Research

25 pages, 4503 KiB  
Article
A Comprehensive Study on the Development of an Isotonic Sports Drink Preserved by UV-C Light Assisted by Mild Heat and Loaded with Yerba Mate (Ilex paraguariensis St. Hill.) Extract
by María Luz Kozono, Magdalena Durán Cassiet, Antonella Andreone, Marcela L. Schenk and Sandra N. Guerrero
Foods 2025, 14(9), 1494; https://doi.org/10.3390/foods14091494 - 24 Apr 2025
Viewed by 263
Abstract
A unique isotonic sports drink (ISD) was created in this study using a pilot-scale short-wave ultraviolet light (UV-C, 892 mJ/cm2, 20 °C) assisted by mild heat (UV-C/H, 534 mJ/cm2, 50 °C), which was followed by the addition of yerba [...] Read more.
A unique isotonic sports drink (ISD) was created in this study using a pilot-scale short-wave ultraviolet light (UV-C, 892 mJ/cm2, 20 °C) assisted by mild heat (UV-C/H, 534 mJ/cm2, 50 °C), which was followed by the addition of yerba mate (Ilex paraguariensis) extract (YME). Consumer perception and microbiological and physicochemical stability during refrigerated storage (4 °C/23 d) were assessed for the ISD. Alicyclobacillus acidoterrestris (AA) spores and cocktails of yeasts and Escherichia coli were considerably inactivated by UV-C/H. The TEM and SEM micrographs showed that AA evidenced sustained severe structural damage. Furthermore, UV-C/H completely inactivated the native microbiota, while YME incorporation increased the initial aerobic mesophilic and mold-and-yeast populations by 0.48 and 0.70 log cycles, remaining stable during storage. YME addition enhanced total polyphenols, flavonoids and antioxidant activity by 2.7–3.7, 16.5–16.7 and 6.6–24.0 times compared to the untreated ISD and ISD-UVC/H samples. Except for sedimentation and turbidity, the other physical characteristics mostly did not change (going from 1494 ± 382 to 2151 ± 106 NTU). The initial 5-HMF value in the ISD was raised by UV-C/H treatment and YME addition. Notwithstanding, it stayed below the allowed threshold throughout storage. ISD-UVC/H+YME had a high overall acceptability score; 60% of panelists gave the drink a score of seven or higher. Additionally, the herbal taste of YME was well liked, and its bitterness was perceived as mild. These findings suggest that including YME and the UV-C/H treatment can produce an ISD of superior quality with distinct sensory attributes. Full article
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