Freeze drying can be used to preserve fresh flowers, especially for wedding bouquet preservation. The petals can also be freeze-dried, used for weddings, dinner parties and other occasions, to decorate cakes and sprinkle on tables, etc.
Flower freeze drying process
Freeze-dried flowers use a process called freeze-drying to reduce the temperature of the flowers below freezing, and then apply a high-pressure vacuum to extract moisture in the form of steam. The vapor collects on condensing surfaces outside, turns back into ice and is removed. Finally, gradually increasing temperatures will extract all remaining "bound" moisture from the flowers. This process preserves the original shape and structure and preserves the flower.
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