Food grade colored fluids for printing on edible substrates
AssigneeSensient Imaging Technologies GmbH
InventorsRobert A. Baydo, Benedict D. Fabian, Zahra S. Fathollahi, Diane V. Graff, Constance L. Lee, Penny F. Martin
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Abstract
Food grade colored fluids which include food grade dyes and food grade glycols are provided. Also provided are methods for applying the food grade colored fluids directed to the surface of an edible substrate, and edible substrates having the food grade colored fluids applied to a surface thereof. The food grade colored fluids may optionally include glycerine and water. In one embodiment, the food grade glycol makes up at least about 25 wt. % of the colored fluid and water makes up no more than about 35 wt. % of the colored fluid.
Claims38
A method of applying an edible colorant to a surface of an edible substrate, comprising ink jet printing onto the surface a food grade colored fluid comprising a food grade dye, glycerine, at least about 25 wt. % 1,2-propanediol, and optionally water;
- wherein the 1,2-propanediol, glycerine and any optional water make up at least about 90 wt. % of the colored fluid, and any water present makes up no more than about 35 wt. % of the colored fluid.
A method of applying an edible colorant to a surface of an edible substrate, the method comprising ink jet printing onto the surface a food grade colored fluid comprising a food grade dye, a food grade glycol, optionally glycerine and optionally water;
- wherein the food grade glycol and any optional glycerine and water make up at least about 90 wt. % of the colored fluid, and any water present makes up no more than about 35 wt. % of the colored fluid;
- and further wherein the colored fluid has a Brookfield viscosity at 60° C. that changes by no more than 2 cps over a shear rate range from about 10 to 45 rpm.
A method of applying an edible colorant to a surface of an edible substrate, the method comprising ink jet printing onto the surface a food grade colored fluid comprising a food grade dye and at least about 25 wt. % 1,2-propanediol, wherein the food grade dye has an inorganic salt content of no more than about 0.5 wt. %.
A method of applying an edible colorant to a surface of an edible substrate, the method comprising ink jet printing onto the surface a food grade colored fluid comprising a food grade dye and at least about 70 wt. % 1,2-propanediol, glycerine or a mixture thereof, wherein the colored fluid has a viscosity of about 35 to 65 cps at 25° C.
A method of applying an edible colorant to a surface of an edible substrate, the method comprising ink jet printing onto the surface a food grade colored fluid comprising a food grade dye, at least about 85 wt. % 1,2-propanediol, about 2 to 10 wt. % glycerine, and no more than about 5 wt. % water, wherein the colored fluid has a property selected from a viscosity of about 35 to 65 cps at 25° C., a surface tension of about 20 to 60 dynes per cm at 25° C. and a combination thereof.
A method of applying an edible colorant to a surface of an edible substrate, the method comprising ink jet printing onto the surface a food grade colored fluid comprising a food grade dye, at least about 90 wt. % 1,2-propanediol, glycerine, or a mixture thereof, and no more than about 5 wt. % water, wherein the colored fluid has a property selected from a viscosity of about 8 to 14 cps at 60° C., a surface tension of about 20 to 60 dynes per cm at 25° C., and a combination thereof.
Dependencies are inferred from the claim text.