DE4215367A1 - Colour pigment particle for use with foodstuff - comprises aluminium body with overcoat film of ferric oxide - Google Patents

Colour pigment particle for use with foodstuff - comprises aluminium body with overcoat film of ferric oxide

Info

Publication number
DE4215367A1
DE4215367A1 DE4215367A DE4215367A DE4215367A1 DE 4215367 A1 DE4215367 A1 DE 4215367A1 DE 4215367 A DE4215367 A DE 4215367A DE 4215367 A DE4215367 A DE 4215367A DE 4215367 A1 DE4215367 A1 DE 4215367A1
Authority
DE
Germany
Prior art keywords
foodstuff
pigment particle
metallic
gold
ferric oxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE4215367A
Other languages
German (de)
Inventor
Gerhard Ruth
Volker Ruth
Detlef Ruth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gerhard Ruth & Co KG GmbH
Original Assignee
Gerhard Ruth & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gerhard Ruth & Co KG GmbH filed Critical Gerhard Ruth & Co KG GmbH
Priority to DE9207357U priority Critical patent/DE9207357U1/de
Priority to DE4215367A priority patent/DE4215367A1/en
Publication of DE4215367A1 publication Critical patent/DE4215367A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/62—Metallic pigments or fillers
    • C09C1/64—Aluminium
    • C09C1/642—Aluminium treated with inorganic compounds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
    • A23L5/40—Colouring or decolouring of foods
    • A23L5/42—Addition of dyes or pigments, e.g. in combination with optical brighteners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C09C3/063—Coating

Abstract

The colour pigment particle is for use as a metallic, shining foodstuff colour, and comprises an Al body on the outer surface of which is a shining film of ferric oxide. The Al body is formed as a platelet (1), the thickness of which is between 0.1 and 0.3 micrometres and its greatest dia. is less than 36 micrometres. USE/ADVANTAGE - A cheap, legally usable, gold-metallic shining pigment for use with foodstuff.

Description

Die Erfindung betrifft ein Farbpigmentpartikel für die Verwendung als metallisch glänzende Lebensmittelfarbe, bestehend aus einem Aluminiumkörper mit ebenen, metal­ lisch glänzenden Außenflächen.The invention relates to a color pigment particle for Use as a shiny metallic food coloring, consisting of an aluminum body with flat, metal glossy exterior surfaces.

Die nach dem Stande der Technik bekannten Farbpigment­ partikel der oben genannten Art verleihen einer damit pigmentierten Lebensmittelfarbe einen starken silbrig­ metallischen Glanz. Sie sind aus lebensmittelrechtli­ cher Sicht unbedenklich, weil reines Aluminium zu den zugelassenen Lebensmittelfarbstoffen zählt.The color pigment known from the prior art Particles of the type mentioned above give one pigmented food coloring a strong silvery metallic sheen. They are from food law Safe view because pure aluminum is one of the approved food colors.

Ein besondere Problem bei der Färbung von Lebensmitteln besteht bei gold-metallisch glänzenden Farbtönen. Sol­ che gold-metallisch glänzenden Farbtöne werden bei­ spielsweise in Bäckereien oder Konditoreien für Spezia­ litäten wie Jubiläumstorten, goldene Hochzeiten oder dergleichen benötigt. Zur billigen Herstellung von gold-metallisch glänzenden Farbtönen wurden früher Farbpigmentpartikel aus Messingbronze verwendet. Solche Lebensmittelfarben aus Messingbronze dürfen allerdings heutzutage wegen der wesentlich strenger gewordenen lebensmittelrechtlichen Vorschriften nicht mehr einge­ setzt werden. Für die Herstellung einer gold-metalli­ schen Lebensfarbe wird deshalb neuerdings im wesentli­ chen reines Gold (24 Karat = 99,99%) verwendet, wel­ ches als Blattgold oder Goldstaub zum Einsatz kommt. Reines Gold, welches aus lebensmittelrechtlicher Sicht ebenfalls unbedenklich ist, ist indessen außerordent­ lich teuer. Die Bäcker und Konditoren müssen sich des­ halb aus Kostengründen mit gelben oder anderen gold­ ähnlichen Farbtönen behelfen.A particular problem with the coloring of food exists in gold-metallic shades. Sol che gold metallic shades are at for example in bakeries or confectioneries for specialties such as anniversary cakes, golden weddings or the like needed. For cheap manufacture of gold-metallic shades of color used to be Color bronze bronze pigment particles used. Such Brass bronze food colors are allowed nowadays because of the much stricter food regulations no longer included  be set. For the production of a gold metallic That is why the color of life has recently become essential pure gold (24 carats = 99.99%) is used, wel ches is used as gold leaf or gold dust. Pure gold, which from a food law perspective is also harmless, but is extraordinary expensive. The bakers and confectioners have to half with yellow or other gold for cost reasons help similar shades.

Es ist Aufgabe der Erfindung, ein billiges, den lebens­ mittelrechtlichen Anforderungen entsprechendes goldme­ tallisch glänzendes Pigment zu schaffen.It is an object of the invention to be a cheap, life goldme corresponding to legal requirements to create a shiny metallic pigment.

Gegenstand der Erfindung ist ein Farbpigmentpartikel für die Verwendung als metallisch glänzende Lebensmit­ telfarbe, bestehend aus einem Aluminiumkörper mit ebe­ nen, metallisch glänzenden Außenflächen, wobei sich dieses Farbpigmentpartikel dadurch kennzeichnet, daß die Außenflächen von einem durchscheinenden Film aus Fe2O3 überzogen sind.The invention relates to a colored pigment particle for use as a shiny metallic food coloring, consisting of an aluminum body with a flat, shiny metallic outer surface, this colored pigment particle being characterized in that the outer surfaces are coated with a translucent film of Fe 2 O 3 .

Es hat sich überraschenderweise herausgestellt, daß man gold-metallisch glänzende Farbpigmentpartikel mit einem ausgezeichneten Goldfarbton dadurch herstellen kann, daß die metallisch glänzenden Außenflächen von Alumi­ niumpigmentpartikeln mit einem durchscheinenden Film aus Fe2O3 überzogen werden. Die Beschichtung von Alumi­ niumpigmentpartikeln mit Eisenoxid kann beispielsweise im CVD-Verfahren durchgeführt werden. Nach einer geeig­ neten Reinigung von Produktionsrückständen stehen die Pigmentpartikel gemäß der Erfindung ausschließlich aus Aluminium und Eisenoxid und sind somit für die Färbung von Lebensmitteln unbedenklich, weil sowohl reines Alu­ minium als auch Eisenoxid zugelassene Lebensmittelfar­ ben sind. It has surprisingly been found that gold-metallic shiny color pigment particles with an excellent gold color can be produced by coating the metallic shiny outer surfaces of aluminum pigment particles with a translucent film of Fe 2 O 3 . The coating of aluminum pigment particles with iron oxide can be carried out, for example, in the CVD process. After a suitable cleaning of production residues, the pigment particles according to the invention consist exclusively of aluminum and iron oxide and are therefore harmless for the coloring of foods, because both pure aluminum and iron oxide are approved food colors.

Ein aus Farbpigmentpartikeln gemäß der Erfindung herge­ stelltes Pulver läßt sich ähnlich wie Goldstaub einfach verarbeiten. Die Farbpigmentpartikel gemäß der Erfin­ dung können aber auch in geeignete Trägerstoffe ein­ gearbeitet werden, um eine gold-glänzende Lebensmittel­ farbe zu schaffen.Herge from color pigment particles according to the invention Powder can be made just like gold dust to process. The color pigment particles according to the Erfin but can also be used in suitable carriers are being worked to make a gold shiny food to create color.

Die Aluminiumkörper sind vorzugsweise als Plättchen ausgebildet, deren Dicke zwischen 0,1 und 3 Mikrometer liegt und deren größter Durchmesser kleiner als 36 Mi­ krometer ist.The aluminum bodies are preferably as platelets formed whose thickness is between 0.1 and 3 microns lies and whose largest diameter is less than 36 mi crometer is.

Ein Ausführungsbeispiel eines Farbpigmentpartikels gemäß der Erfindung wird im folgenden anhand der Zeich­ nung näher erläutert, die einen Querschnitt durch einen solchen Farbpigmentpartikel zeigt.An embodiment of a color pigment particle according to the invention is based on the drawing voltage explained in more detail, which is a cross section through a shows such color pigment particles.

Der in der Zeichnung dargestellte Farbpigmentpartikel ist als Plättchen 1 ausgebildet, dessen Dicke zwischen 0,1 bis 3 Mikrometer liegt und dessen größter Durchmes­ ser kleiner als 36 Mikrometer ist. Die beiden groben Außenflächen 2 und 3 dieses Plättchens 1 sind völlig eben ausgebildet und haben eine glänzende Oberfläche. Alle Außenflächen des Plättchens 1 sind von einem dün­ nen Film 4 aus Fe2O3 überzogen. Dieser Film 4 ist nur wenige Molekülstärken dick, so daß er weitgehend licht­ durchlässig ist und dem von der metallisch glänzenden Oberfläche des Plättchens reflektierten Licht eine röt­ lich-gelbe Farbkomponente gibt. In Verbindung mit der silbrig glänzenden Oberfläche des Aluminiumkörpers ergibt sich somit insgesamt ein gold-metallischer Licht­ effekt, der dem von reinem Gold reflektierten Licht weitestgehend ähnlich ist.The color pigment particle shown in the drawing is designed as a plate 1 , the thickness of which is between 0.1 to 3 micrometers and the largest diameter of which is less than 36 micrometers. The two coarse outer surfaces 2 and 3 of this plate 1 are completely flat and have a glossy surface. All outer surfaces of the plate 1 are covered by a thin film 4 of Fe 2 O 3 . This film 4 is only a few molecular thicknesses thick, so that it is largely translucent and gives the light reflected from the shiny metallic surface of the plate a reddish-yellow color component. In combination with the silvery shiny surface of the aluminum body, the overall result is a gold-metallic light effect that is largely similar to the light reflected from pure gold.

Claims (2)

1. Farbpigmentpartikel für die Verwendung als metallisch glänzende Lebensmittelfarbe, bestehend aus einem Aluminiumkörper mit ebenen, metallisch glänzenden Außenflächen, dadurch gekennzeichnet, daß die Außenflächen von einem durchscheinenden Film aus Fe2O3 überzogen sind.1. Color pigment particles for use as a shiny metallic food coloring, consisting of an aluminum body with flat, shiny metallic outer surfaces, characterized in that the outer surfaces are coated with a translucent film of Fe 2 O 3 . 2. Farbpigmentpartikel nach Anspruch 1, dadurch gekennzeichnet, daß der Aluminiumkörper als Plättchen (1) ausgebildet ist, dessen Dicke zwischen 0,1 bis 0,3 Mi­ krometer liegt und dessen größter Durchmesser kleiner als 36 Mikrometer ist.2. Color pigment particles according to claim 1, characterized in that the aluminum body is designed as a plate ( 1 ), the thickness of which is between 0.1 to 0.3 mm and the largest diameter is less than 36 micrometers.
DE4215367A 1992-05-08 1992-05-08 Colour pigment particle for use with foodstuff - comprises aluminium body with overcoat film of ferric oxide Withdrawn DE4215367A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9207357U DE9207357U1 (en) 1992-05-08 1992-05-08
DE4215367A DE4215367A1 (en) 1992-05-08 1992-05-08 Colour pigment particle for use with foodstuff - comprises aluminium body with overcoat film of ferric oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4215367A DE4215367A1 (en) 1992-05-08 1992-05-08 Colour pigment particle for use with foodstuff - comprises aluminium body with overcoat film of ferric oxide

Publications (1)

Publication Number Publication Date
DE4215367A1 true DE4215367A1 (en) 1993-11-11

Family

ID=6458524

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4215367A Withdrawn DE4215367A1 (en) 1992-05-08 1992-05-08 Colour pigment particle for use with foodstuff - comprises aluminium body with overcoat film of ferric oxide

Country Status (1)

Country Link
DE (1) DE4215367A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003609A1 (en) * 1998-07-16 2000-01-27 Merck Patent Gmbh Coloration with pearly luster pigments in the food and pharmaceutical sectors
US7138417B2 (en) 2002-02-06 2006-11-21 Merck Patent Gmbh Inhibitors of integrin αvβ6
US7927416B2 (en) 2006-10-31 2011-04-19 Sensient Colors Inc. Modified pigments and methods for making and using the same
US7964033B2 (en) 2007-08-23 2011-06-21 Sensient Colors Llc Self-dispersed pigments and methods for making and using the same
US9221986B2 (en) 2009-04-07 2015-12-29 Sensient Colors Llc Self-dispersing particles and methods for making and using the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003609A1 (en) * 1998-07-16 2000-01-27 Merck Patent Gmbh Coloration with pearly luster pigments in the food and pharmaceutical sectors
AU765514B2 (en) * 1998-07-16 2003-09-18 Merck Patent Gmbh Coloration with pearly luster pigments in the food and pharmaceutical sectors
CN1515320B (en) * 1998-07-16 2011-11-30 默克专利股份有限公司 Colouring application of pearly pigment in medicine
US7138417B2 (en) 2002-02-06 2006-11-21 Merck Patent Gmbh Inhibitors of integrin αvβ6
US7927416B2 (en) 2006-10-31 2011-04-19 Sensient Colors Inc. Modified pigments and methods for making and using the same
US8147608B2 (en) 2006-10-31 2012-04-03 Sensient Colors Llc Modified pigments and methods for making and using the same
US8163075B2 (en) 2006-10-31 2012-04-24 Sensient Colors Llc Inks comprising modified pigments and methods for making and using the same
US7964033B2 (en) 2007-08-23 2011-06-21 Sensient Colors Llc Self-dispersed pigments and methods for making and using the same
US8118924B2 (en) 2007-08-23 2012-02-21 Sensient Colors Llc Self-dispersed pigments and methods for making and using the same
US9221986B2 (en) 2009-04-07 2015-12-29 Sensient Colors Llc Self-dispersing particles and methods for making and using the same

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Legal Events

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8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8139 Disposal/non-payment of the annual fee