Process for preserving fresh produce and coating composition...

A - Human Necessities – 23 – B

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A23B 7/16 (2006.01) A23B 7/154 (2006.01) C09D 5/16 (2006.01) C09D 103/02 (2006.01) C09D 129/04 (2006.01) A01N 31/16 (2006.01) A01N 37/40 (2006.01) A01P 1/00 (2006.01)

Patent

CA 2295243

Fresh produce is preserved by coating the exterior surface of the produce with a coating composition comprising an aqueous solution of from about 1 to about 20 percent by weight of substantially hydrolyzed cold water insoluble polyvinyl alcohol, about 0.1 to about 10 percent by weight of low molecular weight cold water soluble starch, and about 0.03 to about 5 percent by weight of surfactant. Optional constituents include antimicrobials and plasticizers. The coating composition is effective to control respiratory exchange, i.e., the passage of gases, particularly oxygen, ethylene and carbon dioxide, into and out of the produce, thereby to control maturation and ripening of the produce.

Les fruits et légumes frais sont préservés en enduisant la surface extérieure du produit avec une composition de revêtement comprenant une solution aqueuse d'environ 1 à environ 20 pour cent en poids d'alcool de polyvinyle sensiblement insoluble dans l'eau froide, d'environ 0,1 à environ 10 pour cent en poids d'amidon soluble dans l'eau froide à faible poids moléculaire, et d'environ 0,03 à environ 5 pour cent en poids de surfactant. Les composants facultatifs comprennent des agents antimicrobiens et des plastifiants. La composition de revêtement est efficace pour contrôler l'échange respiratoire, c'est-à-dire le passage de gaz, en particulier de l'oxygène, de l'éthylène et du dioxyde de carbone, à l'intérieur et à l'extérieur des fruits et légumes, ce qui permet de contrôler la maturation et le mûrissement des fruits et légumes.

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