Freeze drying

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

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Notion

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Science and technology

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What Wikipedia says

Freeze drying, also known as lyophilization or cryodesiccation, is a low-temperature dehydration process that involves freezing the product and lowering pressure, thereby removing the ice by sublimation. This is in contrast to dehydration by most conventional methods that evaporate water using heat.

Excerpt from the Wikipedia article “Freeze drying”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Archives New Zealand from New Zealand, CC BY-SA 2.0, via Wikimedia Commons.