Process and coating composition for extending the shelf life...

A - Human Necessities – 23 – B

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A23B 7/00 (2006.01)

Patent

CA 2533090

The shelf life of fresh harvest produce is extended by coating the exterior surface of freshly harvested produce with a coating composition comprising an aqueous emulsion of polyvinylidene chloride copolymers containing from about 0.25 to 25% by weight of copolymer solids to water and between 0.001 and 20% plasticizer preferably a polyethylene oxide based additive such as Triton-X to weight of copolymer solids in the emulsion. The coating may also contain biocides as well to control bacteria and fungal growth an the post harvest produce during storage, shipping, distribution, and sale of the product. The coating composition is effective in extending the shelf life of produce.

Selon cette invention, on prolonge la durée de vie d'un produit après récolte en appliquant sur la surface extérieure de ce produit une composition comprenant une émulsion aqueuse de copolymères de chlorure de polyvinylidène contenant entre environ 0,25 à 25 % en poids de solides copolymères par rapport à l'eau et entre 0,001 et 20 % d'un plastifiant, de préférence un additif à base d'oxyde de polyéthylène tel qu'un Triton-X par rapport au poids des solides copolymères de l'émulsion. Le revêtement peut également contenir des biocides. L'invention porte également sur l'élimination des bactéries et la prolifération fongique dans un produit après récolte pendant le stockage, le transport, la distribution et la vente de ce produit. La composition de revêtement est efficace pour prolonger la durée de vie d'un produit.

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