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. 2025 Jan;90(1):e17653.
doi: 10.1111/1750-3841.17653.

Effect of oscillating magnetic field (OMF) on the supercooling behavior of iron-oxide nanoparticle (IONP) agar model system

Amanda Joya  1 , Dongyoung Lee  2 , Taiyoung Kang  3 , Marisa M Wall  4 , Soojin Jun  1
Affiliations

Effect of oscillating magnetic field (OMF) on the supercooling behavior of iron-oxide nanoparticle (IONP) agar model system

Amanda Joya et al. J Food Sci. 2025 Jan.

Abstract

Freezing extends the shelf life of foods but often leads to structural damage due to ice crystal formation, negatively impacting quality attributes. Oscillating magnetic field (OMF)-assisted supercooling has emerged as a potential technique to overcome these limitations by inhibiting ice nucleation and maintaining foods in a supercooled state. Despite its potential, the effectiveness and underlying mechanisms of OMF-assisted supercooling remain subjects of debate. In this study, the effects of OMF on the supercooling behavior of an agar-based food model system containing iron(III)-oxide nanoparticles (IONP) were investigated. Agar samples containing IONPs at various concentrations (3, 6, 12 and 15 mg per 100 mL) were prepared to simulate the presence of ferric materials responsive to OMF. The samples were exposed to an external OMF (10 mT, 10 Hz) at -8°C for 24 h. Higher supercooling probabilities were achieved in the IONP-containing samples, with probabilities of 75%, 75%, and 90% for the 3 mg, 6 mg, and 12 mg concentrations, respectively. In contrast, lower supercooling probabilities of 60% and 55% were exhibited by the control samples (without nanoparticles) and samples containing zinc nanoparticles (ZNPs), respectively. It is suggested that the enhanced supercooling stability in IONP samples is due to the interaction between the magnetic nanoparticles and the OMF, inhibiting ice nucleation possibly through the magneto-mechanical motion affecting water molecule orientation and hydrogen bonding networks.

Keywords: agar‐based food model; freezing; iron‐oxide nanoparticles; magnetic field; supercooling.

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References

REFERENCES

    1. Aldoradin‐Puza, E., Rodríguez‐Mázmela, C., Cuba‐Mayo, F. E., Morán‐González, C. V., & Alemán‐Polo, J. M. (2022). Evaluation of traditional freezing and electromagnetic field‐assisted freezing in the physical and sensory properties of avocado (Persea americana Mill) variety Hass. Brazilian Journal of Food Technology, 25, e2021083. https://doi.org/10.1590/1981‐6723.08321
    1. Baffa, O., Matsuda, R., Arsalani, S., Prospero, A., Miranda, J., & Wakai, R. (2019). Development of an optical pumped gradiometric system to detect magnetic relaxation of magnetic nanoparticles. Journal of Magnetism and Magnetic Materials, 475, 533–538.
    1. Chen, Y., Abe, M., Tomita, I., Kurashina, Y., & Kitamoto, Y. (2023). Synthesis and characterization of pH‐responsive ferrogels comprising sulfamethazine‐based polymer and magnetic nanoparticles for sensing ammonia gas. Journal of Magnetism and Magnetic Materials, 565, 170201.
    1. Cruz, M. M., Ferreira, L. P., Alves, A. F., Mendo, S. G., Ferreira, P., Godinho, M., & Carvalho, M. D. (2017). Nanoparticles for magnetic hyperthermia. In Nanostructures for cancer therapy (pp. 485–511). Elsevier.
    1. Dalvi‐Isfahan, M., Hamdami, N., Xanthakis, E., & Le‐Bail, A. (2017). Review on the control of ice nucleation by ultrasound waves, electric and magnetic fields. Journal of Food Engineering, 195, 222–234. https://doi.org/10.1016/j.jfoodeng.2016.10.001