A novel technique for sterilization using a power self-regulated single-mode microwave cavity
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AuthorReverte Ors, Juan David; Pedreño Molina, Juan Luis; Fernández Escámez, Pablo Salvador; Lozano Guerrero, Antonio José; Periago Bayonas, Paula María; [et al.]
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was supported by the Ministerio de Economía y Competitividad under the project with reference DPI2014-61857-EXP.
PublisherEd. Molecular Diversity Preservation International (MDPI)
Bibliographic CitationReverte-Ors JD, Pedreño-Molina JL, Fernández PS, Lozano-Guerrero AJ, Periago PM, Díaz-Morcillo A. A Novel Technique for Sterilization Using a Power Self-Regulated Single-Mode Microwave Cavity. Sensors (Basel). 2017;17(6):1309. Published 2017 Jun 7. doi:10.3390/s17061309
Microbiological food safety
Power and temperature control
In this paper, a novel technique to achieve precise temperatures in food sterilization has been proposed. An accurate temperature profile is needed in order to reach a commitment between the total removal of pathogens inside the product and the preservation of nutritional and organoleptic characteristics. The minimal variation of the target temperature in the sample by means of a monitoring and control software platform, allowing temperature stabilization over 100 °C, is the main goal of this work. A cylindrical microwave oven, under pressure conditions and continuous control of the microwave supply power as function of the final temperature inside the sample, has been designed and developed with conditions of single-mode resonance. The uniform heating in the product is achieved by means of sample movement and the self-regulated power control using the measured temperature. Finally, for testing the sterilization of food with this technology, specific biological validation based on Bacillus ...
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