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Development of equipment and methodology to evaluate the effect of pulsed magnetic fields on food freezing

Grant number: 18/05871-3
Support type:Regular Research Grants
Duration: December 01, 2018 - November 30, 2020
Field of knowledge:Agronomical Sciences - Food Science and Technology
Principal Investigator:Ernane José Xavier Costa
Grantee:Ernane José Xavier Costa
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
Assoc. researchers:Ana Carolina de Sousa Silva ; Sergio Paulo Amaral Souto

Abstract

Both static and oscillating (or pulsed) magnetic fields belong to one of the so-called emerging and non-thermal technologies that have been increasingly applied in food, constituting an alternative to conventional conservation treatments involving mainly the use of temperature as a medium for both fresh and processed food. In some cases, the success of applying magnetic fields to food conservation is evident, but in others there are many doubts about the benefits they actually provide due to the contradictions found in studies carried out in which many factors such as intensity and frequency of magnetic fields and the lack of understanding of the mechanisms involved in the interaction between these factors and the characteristics of the food. That is why this project intends to answer the scientific question regarding how and what variables are preponderant in relation to the freezing of food under the action of magnetic fields. In this project the blueberry (Vaccinium corymbosum sp.), Which is a fruit appreciated in different parts of the planet, but due to its fragile structure must be cooled or frozen to be distributed as a food model. Because it is a small fruit the blueberry allows the construction of equipment in a reduced scale which will improve the control of the variables in the experimental arrangement as well as in the development of the electronic instrumentation and the equipment of application and control of the magnetic field, another important aspect is the fact of the region that includes the cities of Piracicaba, Pirassununga and São Carlos produce in small properties the blueberry fruit in the state of São Paulo. (AU)