Preservation of flowers by lyophilization and vacuum...

Details Preservation of flowers by lyophilization and vacuum... Preservation of flowers by lyophilization and vacuum...

A - Human Necessities

01

N

71/3

A01N 3/00 (2006.01)

Patent

CA 2020360

PRESERVATION OF FLOWERS BY LYOPHILIZATION AND VACUUM DEPOSITION POLYMERIZATION COATING ABSTRACT This invention pertains to the preservation of flowers, and other botanicals for decorative purposes, to a degree that the preserved flower, or other botanical structure, maintains the appearance as if it was still freshly cut. The method for preserving the material is two-phased. The first phase is the drying in vacuo, preferably while frozen (lyophilization); and the second phase is the coating of the external surface with a polymerizable monomer which adsorbs from the vapour state and polymerizes after deposition onto the flower's surface. The flower is effectively encased in the transparent hydrophobic coating and protected from the deleterious effects of ultraviolet light degradation of pigments, from moisture and from mechanical cracking and breaking of the otherwise brittle petals. The internal water, being removed, cannot now support the normal biochemical degradation of the cellular structures that occurs in non-living plants.

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