Food Engineering

Ohmic heating

Heating food by passing an electric current directly through it, so the food itself acts like a resistor and heats evenly from the inside.

Real-life application

Ohmic heating is useful for foods with solid chunks in a liquid, such as fruit pieces in syrup, because it heats the chunks and liquid evenly together.

Related terms

Microwave processing

Processing & Preservation

Heating or cooking food using microwave energy, which makes water molecules inside the food vibrate and generate heat quickly from within.

HTST principle

Processing & Preservation

The principle that higher temperature for shorter time achieves the same microbial lethality with less loss of nutrients, colour and flavour.

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