Edible coloring composition

a coloring composition and edible technology, applied in the field of edible coloring compositions, can solve the problems of inconvenient consumption of inks, undesirable effects, and inks containing ingredients which are not completely safe for consumption,

Inactive Publication Date: 2010-11-18
LAVIE DANNY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]The present invention provides a liquid coloring composition comprising of a coffee solution or coffee extract and an ink vehicle, wherein said coloring composition is suitable for use as an ink in non-impact printing technologies, including ink jet type printers. Optionally, said composition comprises one or more of the following: humectants, rheology controlling agents, wetting agents, antioxidants, pH adjusting agents, foam control agents, antimicrobial agents, and natural or artificial colorants, fixation agents or mixtures thereof.

Problems solved by technology

Furthermore, the prior art inks contain ingredients which are not completely safe for consumption or may impart a flavor which is undesirable, for example in beverages such as coffee.
Thus, there is a long felt need for an edible ink or coloring composition which does not contain ingredients which may be unsafe for consumption and may impart undesirable properties to the food stuff on which they are applied, such as undesirable taste or texture, while also suitable for use with non-impact printing technologies, e.g., bubble jet or ink jet technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035]Coffee concentrate was prepared as follows: First, ground coffee beans were dispersed in boiling water for 1 hour and filtered through Whatman-41 filter paper. The filtered aqueous suspension was mixed with an excess of ethanol to precipitate the natural polysaccharide which is present in the beans (in order to reduce the viscosity to be suitable to simple office inkjet printer). After centrifugation, 0.1 wt % potassium sorbate (antimicrobial agent) was added to the supernatant, which was then concentrated under reduced pressure until a 15-20 wt % solid content coffee extract is obtained. Ink jet composition is described in Table-1. The ink was 0.45 micro meter filtered and could be printed with a Lexmark Z615 printer. Viscosity of the ink was 2.9 cPs.

TABLE 1Sample No. Ax-1990-10wt %Coffee concentrate (Regavim89.9Espresso concentrate)Propylene glycol5Glycerol5Tween 800.1

example 2

[0036]Coffee concentrate was prepared as in example 1. Ink jet composition is described in Table-2. The ink was 0.45 micro meter filtered and could be printed with a Lexmark Z615 printer. Viscosity of the ink (including caramel coloring) was 3.0. cPs.

TABLE 2Ax-1990-30wt %“Regavim” Espresso concentrate79.9Caramel color 050 concentrate*10Propylene glycol5Glycerol5Tween 800.1*Caramel color 050 concentrate is a commercial product- Caramel color no. 50 Class IV, from D. D. Williamson

example 3

[0037]Coffee concentrate obtained as a commercial espresso beverage was prepared as in Example 1 wherein additionally part of the polysaccharides from the precipitate were added to increase viscosity. Ink jet composition is described in Table-3. The ink was 0.45 micro meter filtered and could be printed with a Lexmark 2615 printer. Viscosity of the ink was 5.5 cPs. However, this time the viscosity of the ink was increased by adding the rheological agents which are naturally present in the coffee, and which are precipitated by the ethanolic solution.

TABLE 3Ax-2010-50wt %“commercial espresso”79.4concentrateEthanolic precipitate (gum)0.5Caramel10Propylene glycol5Glycerol5Tween 800.1

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PUM

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Abstract

The present invention provides a liquid coloring composition comprising of a coffee solution or coffee extract and an ink vehicle. The coloring composition is suitable for use as an ink in a non-impact printing device, including an ink jet type printer. The composition is composed of edible components. The invention further provides a process for applying a design to a food substrate, comprising of providing a non-impact printing device, wherein the ink cartridge or external container contains the coloring composition of the invention.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the field of food stuff, particularly to edible coloring compositions.BACKGROUND OF THE INVENTION[0002]With the rise in popularity of coffee drinking, particularly coffee drinks such as cappuccino, café au lait and other premium coffee drinks, the practice of decorating the top surface of the frothed milk has also developed. The most widely practiced technique of decorating the foamed milk is known as “latte art”. Latte art refers to the technique of using a coffee solution to trace a design on the surface of foamed milk, wherein usually said foamed milk is in a coffee drink such as café au lait, cappuccino or the like. The designs created in the foamed milk can be of a wide array of possibilities e.g., drawings, images and writing. A number of publications suggest the use of ink jet, bubble jet or other known printers for printing with food coloring onto edible substrates, e.g. U.S. Pat. Nos. 6,058,843, 6,536,345, U.S. Pa...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A23L1/275A23L5/40
CPCA23L1/0061A23L1/2751C09D11/32C09B67/0083C09B61/00A23P20/18A23L5/43A23V2002/00
Inventor LAVIE, DANNYELIAV, EYALMAGDASSI, SHLOMO
Owner LAVIE DANNY
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