Applications of Novel Thermal and Non-thermal Food Processing Techniques

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

Deadline for manuscript submissions: 29 December 2024 | Viewed by 1252

Special Issue Editors


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Guest Editor
CBQF—Centro de Biotecnologia e Química Fina— Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
Interests: thermal and non-thermal food processes; food quality and safety; valorization of fruits and vegetables wastes; predictive microbiology; mathematical modeling; experimental design and data analysis
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
Interests: food microbiology; thermal and non-thermal processes; food processing optimisation; fruits and their by-products; shelf-life of minimally processed fruits; microbial inactivation kinetics; food quality and safety; fruit juices; functional foods
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
CBQF—Centro de Biotecnologia e Química Fina— Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
Interests: food processing; mathematical modeling; quality kinetics; predictive microbiology; non-thermal technologies; transport phenomena; design and optimisation of the food chain; sustainable technology solutions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the ever-evolving field of food processing, novel thermal and non-thermal techniques have emerged as game changers, offering safe food products with improved quality and extended shelf life.

Thermal-based processes, such as microwave, ohmic heating, and radiofrequency technology, have found applications in a variety of foods, offering the advantages of reduced processing time, minimized heat-related degradation of quality, and the effective destruction of enzymes and harmful microbial entities compared to other conventional processing methods.

Emergent non-thermal technologies, including cold plasma, pulsed light and pulsed electric fields, ultraviolet light, irradiation, high-pressure processing, oscillatory magnetic fields, ultrasound, and ozone-based processes, have transformed the landscape of food preservation and quality enhancement. These methods are ideal for delicate foods like fresh fruit and raw vegetables. They result in minimal nutrient loss and improved sensory attributes, making them invaluable for producing healthier, tastier, and safe products.

This Special Issue focuses on exploring the latest developments and research findings related to the application of emerging thermal and non-thermal technologies in food processing.

Prof. Dr. Teresa Maria Ribeiro da Silva Brandão
Dr. Fátima A. Miller
Dr. Cristina L. M. Silva
Guest Editors

Manuscript Submission Information

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Keywords

  • food quality
  • food safety
  • enzyme inactivation
  • sustainable technologies
  • mild processes

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Published Papers (1 paper)

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Research

19 pages, 1909 KiB  
Article
The Power of Thermosonication on Quality Preservation and Listeria Control of Blueberry Juice
by Eleonora Panaro, Teresa R. S. Brandão, Cristina L. M. Silva and Fátima A. Miller
Foods 2024, 13(22), 3564; https://doi.org/10.3390/foods13223564 - 7 Nov 2024
Viewed by 639
Abstract
Due to the increasing consumer demand for healthy, beneficial foods, natural fruit juices have gained popularity for their rich nutritional value and appealing flavor. However, traditional thermal processing can compromise these quality attributes. This study investigates using pulsed thermosonication, a novel mild thermal [...] Read more.
Due to the increasing consumer demand for healthy, beneficial foods, natural fruit juices have gained popularity for their rich nutritional value and appealing flavor. However, traditional thermal processing can compromise these quality attributes. This study investigates using pulsed thermosonication, a novel mild thermal processing method, on Listeria innocua inactivation in blueberry juice, chosen for its high phenolic and anthocyanin content. Ultrasonication was applied at 60% and 100% amplitudes combined with heat treatments at 45 °C and 55 °C and compared to control heat treatments. The Weibull model effectively described the inactivation kinetics, showing that the thermosonicated samples required significantly shorter times (1 and 25 min) for a 5-log reduction compared to the heated samples (10 and 60 min). While pH, total soluble solids, and water activity remained unaffected, color parameters improved, and the best retention of phenolics and anthocyanins was observed at 100% amplitude and 45 °C. Rheological properties were unchanged. The findings demonstrate that thermosonication at milder temperatures is more effective than conventional heat treatment for microbial inactivation and quality retention in blueberry juice, suggesting it is a superior processing method for preserving fruit juices’ nutritional and sensory attributes. Full article
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