Archive
Freezing & Frozen Products
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Block-Frozen Product
Block-frozen product is frozen together into a solid slab rather than piece by piece. It is cheaper to produce than IQF but…
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Clumping
Clumping is a frozen-product defect in which individual pieces stick together into lumps. It is caused by slow freezing, partial thawing or…
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Crust Freezing
Crust freezing describes a situation in which the outer layer of a product freezes much faster than its core, typically because of…
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Cryogenic Freezing
Cryogenic freezing uses liquefied gases such as liquid nitrogen or carbon dioxide at extremely low temperatures to freeze product within seconds. The…
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Deep Freezing
Deep freezing means lowering the product core temperature to −18 °C or colder and keeping it there. The term is often used…
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Flash Freezing
Flash freezing is the rapid freezing of product at very low temperatures so that ice crystals remain small and cell structure is…
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Fluidized Bed Freezing
Fluidized bed freezing is an IQF technology in which a strong upward stream of cold air lifts small pieces of product, such…
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Freezer Burn
Freezer burn is the dehydration of the surface of frozen product caused by sublimation of ice when packaging is damaged, incomplete or…
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Freezing Curve
The freezing curve is the temperature-time graph recorded while a product freezes. It shows the initial cooling phase, the plateau where most…
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What is IQF freezing and why does it matter for berries?
IQF means individually quick frozen. Each berry is frozen separately in a blast of air at around -35 to -40 degrees Celsius,…