What question did this study set out to answer?

The aim is to develop a simplified circuit-analogy model to predict thermal gradients in yield-stress food systems during ohmic heating.

Circuit-theory prediction of thermal gradients in yield-stress multiphase food systems during ohmic heating

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Demonstrates a circuit-analogy model predicting temperature evolution in multiphase food systems, suggesting efficiency for process design.

The aim is to develop a simplified circuit-analogy model to predict thermal gradients in yield-stress food systems during ohmic heating.
Developed a lumped circuit-analogy model for ohmic heating in a potato puree with meatball inclusions.
Conducted experiments under various conductivity ratios and particle arrangements.
Validated the model experimentally and conducted predictive scale-up simulations in a scaled chamber.
Conductivity matching reduced temperature gradients from 30–39 °C to 6–15 °C, improving heating uniformity.
The model reproduced puree temperatures with RMSE < 2 °C and under-predicted meatball core temperatures by ~10 °C after treatment.
Predictions showed ΔT ≤ 6 °C in scaled-up simulations while achieving the target core temperature for lethality.

Son et al. (2026) studied this question.

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View Full Paper

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Authors

Demonstrates a circuit-analogy model predicting temperature evolution in multiphase food systems, suggesting efficiency for process design.

The aim is to develop a simplified circuit-analogy model to predict thermal gradients in yield-stress food systems during ohmic heating.
Developed a lumped circuit-analogy model for ohmic heating in a potato puree with meatball inclusions.
Conducted experiments under various conductivity ratios and particle arrangements.
Validated the model experimentally and conducted predictive scale-up simulations in a scaled chamber.
Conductivity matching reduced temperature gradients from 30–39 °C to 6–15 °C, improving heating uniformity.
The model reproduced puree temperatures with RMSE < 2 °C and under-predicted meatball core temperatures by ~10 °C after treatment.
Predictions showed ΔT ≤ 6 °C in scaled-up simulations while achieving the target core temperature for lethality.

Son et al. (2026) studied this question.

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