- The freeze-drying process, also known as lyophilization or sublimation, consists of two main stages.
- Initially, fresh cut products are transported in to so-called Blast Freezer and frozen below -40C temperature.
- Once products are deeply frozen, they are put into a freeze-drying chamber where a vacuum is created by lowering the air pressure a certain degree.
- Afterward low temperature heat is transferred to products through the shelves of the freeze-drying chamber and ice in the product becomes gas bypassing the liquid phase.
- The whole process may last from 24 hours up to 40 hours depending on the type, size, and amount of the product. Almost 97-98% of the water will be sublimated from products during the freeze-drying process
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