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Food Engineering

Specific mechanical energy SME

The mechanical energy delivered to unit mass of material in an extruder, in J/kg.

Real-life application

Used by snack-food engineers to control how puffed or dense an extruded product, like a corn puff or pasta shape, turns out.

Related terms

Extrusion

Food Engineering

A process combining mixing, shearing, heating and forming in a screw barrel, forcing material through a die. High-temperature short-time extrusion cooks and expands.

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