Smart sticker for use with perishable foods
OwnerSindy Johanna Chaves Noguera, Juan Scott Chaves Noguerainventors
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Abstract
A smart sticker for determining the current state of raw meat for safe human consumption is provided. The smart sticker indicates the quality or decomposition of the meat by changing color. The smart sticker employs a cupric nitrate solution mixed with a polymeric silicon substrate that forms a complex with the valence electrons on the nitrogen atom of an amino acid residue. After this interaction occurs, the smart sticker changes color from, for example, light blue to purple.
Claims19
A smart sticker used to detect meat decomposition caused by a regular spoliation process, the smart sticker comprising:
- a. an additive containing cupric nitrate;
- b. a polymeric silicon substrate;
- c. a solid state sticker formed by the combination of the additive and the polymeric silicon substrate;
- d. wherein the smart sticker is configured to change color by a reaction occurring between a valence electron pair and cupric nitrate ions, thereby indicating decomposition of a protein.
A smart sticker applied directly to the surface of raw food, the smart sticker comprising:
- a. a substrate, the substrate containing a polymeric silicon;
- b. an additive, the additive containing a cupric nitrate solution and a mild base;
- and
- c. the smart sticker is formed into a solid state wafer by mixing the additive with the substrate, wherein the smart sticker is configured to indicate deterioration of raw food by a complexing reaction with valence electron pairs on an amino acid residue of a protein.
A method of detecting spoilage of meat and poultry, the method comprising the steps of:
- a. creating an aqueous cupric nitrate solution;
- b. adding a mild base to the cupric nitrate solution;
- c. mixing the cupric nitrate solution and the mild base with a polymeric silicon substrate;
- d. forming a mixture containing the cupric nitrate solution, the mild base, and the polymeric silicon substrate into a smart sticker;
- e. applying a smart sticker the surface of a piece of food;
- f. complexing the cupric nitrate solution with a valence electron pair on byproducts of food decomposition;
- g. waiting for the cupric nitrate additive to complex with enough valence electron pairs to change the color of the smart sticker.
Dependencies are inferred from the claim text.