JP2010248356A - Edible ink composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an edible ink composition whose fluidity is easily controlled, thereby preventing unevenness and cissing during printing, without changing largely the constitution of the whole composition. <P>SOLUTION: The edible ink composition comprises 15 to 30 wt.% of a polyester compound (A) for an edible ink binder having a carboxyl group, 5 to 20 wt.% of an edible colorant (B), and 30 to 65 wt.% of an edible solvent (C). The composition further comprises a basic compound (D), which is contained in 50 to 150 mol% to the whole carboxyl group of the polyester compound (A). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an edible ink composition.

  Ideally, the printing ink is controlled so as to have fluidity according to the printing conditions and the printing medium. However, in the case of edible or edible inks, since the materials are limited, it is not easy to perform such control.

 For example, Patent Document 1 discloses an edible ink comprising a glycerin fatty acid ester, a natural polysaccharide, an emulsifier, an edible dye, an edible drying oil, and water. Here, natural polysaccharides and edible drying oil serve as binders.

  Patent Document 2 discloses an edible ink for ink jetting containing an edible dye and an edible stabilizer, and an example shows a method using gum arabic as a resin.

  In either case, it was possible to meet the printing conditions by chance, but there was a limit to the control of fluidity, and an ink composition capable of controlling fluidity was required.

  In addition, there has been no example in which a basic compound is used in an edible ink.

JP 2005-320528 A JP-A-9-302294

  An object of the present invention is to provide an edible ink composition which can easily control fluidity without greatly changing the composition of the entire composition, thereby preventing unevenness and repellency during printing.

In the present invention, the relationship between the chemical structure and the viscoelastic properties has been found as a result of extensive studies.
That is, the present invention has 15 to 30% by weight of the edible ink binder polyester compound (A) having a carboxyl group, 5 to 20% by weight of the edible colorant (B), and 30 to 65 of the edible solvent (C). An edible ink composition comprising:
Further comprising a basic compound (D), and
The edible ink composition is characterized in that the basic compound (D) is contained in an amount of 50 to 150 mol% with respect to the entire carboxyl group of the polyester compound (A).

  In the present invention, the basic compound (D) is one kind selected from the group consisting of ammonia, potassium hydroxide, sodium hydroxide, ammonium carbonate, potassium carbonate, sodium carbonate, and monopotassium citrate, or It is related with the said edible ink composition characterized by being 2 or more types.

  The present invention also relates to the edible ink composition, wherein the polyester compound (A) is a copolymer of hydroxy fatty acid (excluding terpenic acid) and terpenic acid.

Further, in the present invention, the terpenic acid is selected from the group consisting of sherolic acid, jaralic acid, epichelolic acid, lactic acid, epilacric acid, laccielocic acid, epilacischeloc acid, and laxialalic acid. One or a mixture containing two or more, and
It relates to the edible ink composition described above, wherein the hydroxy acid contains alleuritic acid and / or alleuritic acid.

  In the present invention, the edible solvent (C) is one or a mixture of two or more selected from the group consisting of water, ethanol, glycerin, and propylene glycol. The present invention relates to an ink composition.

  According to the present invention, an edible ink composition capable of preventing unevenness and repellency during printing can be provided.

  The present invention relates to an edible ink composition comprising a polyester compound (A) for an edible ink binder having a carboxyl group, an edible colorant (B), an edible solvent (C), and a basic compound (D). Related to things.

The edible ink binder polyester compound (A) having a carboxyl group has no limitation on its chemical structure as long as it has a free carboxylic acid that has not been used for the ester bond in addition to an ester bond as a functional group. . A polymer of hydroxy fatty acid is preferable. More preferably, part of the hydroxy fatty acid is terpenic acid, which can be referred to as a copolymer of hydroxy fatty acid (excluding terpenic acid) and terpenic acid. In general, the edible ink binder polyester compound (A) having a carboxyl group is considered to have a primary hydroxyl group and a secondary hydroxyl group in addition to the above functional groups.
Further, the present polyester compound (A) is edible, that is, it needs to have no health problems even if it is eaten by a human. An example of such a copolymer is shellac.

Terpenic acid is a type of terpene. A terpene is a hydrocarbon whose structural unit is isoprene having 5 carbon atoms, and a terpene having an acidic group such as a carboxylic acid is terpene acid. Terpenic acid includes a cyclic structure having a ring structure and an acyclic structure not including the ring structure, but as the terpenic acid constituting the polyester compound (A) of the present invention, a substance having a ring structure is preferable. This is because, in the case of having a ring structure, the movement of the carbon atoms forming the ring is limited, and this imparts a suitable elasticity to the resin, and hence the ink.
Moreover, in order to become a copolymer, the terpenic acid which has a primary hydroxyl group or a secondary hydroxyl group is preferable.

  Examples of terpenic acid include sherolic acid, jaralic acid, epichelolic acid, lactic acid, epilacric acid, raccicheloc acid, epilaccicheloc acid, and lacjiral acid. Terpenic acid may contain only 1 type and may contain 2 or more types.

  It is considered that the hydroxy fatty acid (excluding terpenic acid) constituting the polyester compound (A) of the present invention imparts fluidity to the resin, and thus the ink, and imparts smoothness to the coating film when it is formed. It is done.

  Examples of hydroxy fatty acids include alleuritic acid and / or 6R-hydroxytetradecanoic acid. Hydroxy acid may contain only 1 type and may contain 2 or more types.

  Synthetic colorants and / or natural colorants are used as the edible colorant (B). Examples of synthetic colorants include organic azo dyes such as Yellow No. 5 and Red 505 of azo dyes, Red No. 213 and Red No. 230 of xanthene dyes, Yellow No. 204 of quinoline dyes, Triphenyl, etc. There are indigo dyes, such as blue No. 1 of methene dyes, green No. 201 of anthraquinone dyes, and other organic colorants (tar pigments) such as risol rubin BCA, lake red CBA, risol red, risol red CA. , Risor Red BA, Risor Red SR, Tetrachlor Tetrabrom Fluorescein, Brilliant Lake Red R, Deep Maroon, Toluidine Red, Tetrabrom Fluorescein, Sudan III, Herringdon Pink CN, Permaton Red, Dibrom Fluorescein, Permanent Orange, Bench Gin orange , Diiodofluorescein, quinoline yellow SS, bench gin yellow G, quinizarin green SS, indigo, carbanslen blue, arizurin purple SS, brilliant fast scarlet, permanent red F5R, medicinal scarlet, oil red XO, hansa orange, orange SS , Hansa Yellow, Yellow AB, Yellow OB, Sudan Blue B, Phthalocyanine Blue and the like. Natural colorants include paprika, carotene, carrot carotene, rosewood (sandalwood dye), guaiazulene, red cabbage dye, red rice dye, anato dye, squid dye, turmeric dye, enju dye, krill dye, koji dye Pigment, caramel pigment, corn pigment, onion pigment, tamarind pigment, spirulina pigment, safflower yellow pigment, safflower red pigment, gardenia yellow pigment, gardenia blue pigment, gardenia red pigment, buckwheat whole plant pigment, cherry pigment, laver pigment, hibiscus pigment , Grape juice pigment, marigold pigment, purple potato pigment, purple yam pigment, lac pigment, rutin, butterfly blue pigment, carminic acid, lacqueric acid, bradylin, crocin, carotene, cochineal and the like. From the viewpoint of safety, natural colorants are preferable, and Ikumi dye having high light resistance and high weather resistance as a dye is more preferable.

  The edible solvent (C) is preferably one type selected from the group consisting of water, ethanol, glycerin and propylene glycol, or a mixture of two or more types. Water and ethanol serve as good solvents for the polyester compound (A) used in the present invention, and glycerin and propylene glycol are effective for adjusting the drying property.

  When such a polyester compound (A) is used as a binder for edible ink, the basic compound (D) must be blended as an elasticity-imparting agent. Elasticity can be controlled. The addition amount of the basic compound (D) is preferably 50 to 150 mol, more preferably 75 to 125 mol, based on 100 mol of all the carboxyl groups of the polyester compound (A). It is more preferable.

When the basic compound (D) can be expressed as XOH, when the carboxylic acid and primary hydroxyl group of the polyester compound (A) are ionized to become carboxylate (—COOX) and alkoxylate (—CH ₂ OX), respectively. Conceivable. At this time, the electron density of oxygen atoms on the carboxylate and alkoxylate is improved, and hydrogen bonds are formed with other hydrogen atoms, and these hydrogen bonds become intermolecular bridges. Thereby, it is considered that the movement of the polyester molecules is limited and becomes rigid, and elasticity is imparted.

  Basic compounds must be edible. As examples of such basic compounds, inorganic salts such as ammonia, potassium hydroxide, sodium hydroxide, ammonium carbonate, potassium carbonate, sodium carbonate, and monopotassium citrate are preferable. When using ammonium carbonate, potassium carbonate, or sodium carbonate, it is preferable to remove carbonic acid by heating.

  The ink composition of the present invention can be printed by a known printing method. In addition to lithographic printing, relief printing, intaglio printing and stencil printing, it can also be applied to ink jet printing, digital printing (electronic toner printing, wet development printing) and the like.

  Inks were prepared according to the formulation shown in Table 1 “Composition”. However, in Example 1 and Comparative Example 1, after blending all the components, 60 wt% φ0.3 mm zirconia beads were added to the composition, and the mixture was stirred for 4 hours with a paint shaker manufactured by Asada Steel Corporation. Got. Ammonia was added as ammonia water so that the total amount of water added was the value in the table.

“Aika Black” manufactured by Nippon Chlorophyll Co., Ltd. as squid ink pigment, “Nichino Color Blue L” manufactured by Nissin Foods Sales Co., Ltd., and “Rio Fresh Yellow” manufactured by Toyo Ink Manufacturing Co., Ltd. as safflower yellow pigment. SG-800 "was used.
Further, as decaglycerin monocaprylate and tetraglycerin monooleate, SY glycerin MCA-750 and MO-3S (both manufactured by Sakamoto Pharmaceutical Co., Ltd.) were used, respectively.

The neutralization rate is a molar ratio (%) of the basic compound (ammonia, ammonium carbonate, or sodium carbonate) to the entire carboxyl group of the polyester compound (A),
The acid value of the resin measured by the method defined in JIS K 2501 was used for calculation according to the following formula.
[Basic compound content x base number / base formula) / [resin content x resin acid value / (1000 x 56.11)] x 100

Each of the obtained inks was printed by a known method, and evaluated according to the criteria shown in Table 2 in five stages. The substrate and the printing method are as follows.
(1) Gelatin capsule, gravure offset printing (2) Rice cracker, PAD printing (3) Chocolate, screen printing

From the above results, it is clear that the printability can be remarkably improved by controlling the neutralization rate of the resin having a carboxyl group.

  It should be noted that various modifications and changes may be made to the above-described embodiments without departing from the novel and advantageous features of the present invention other than those already described. Accordingly, all such modifications and changes are intended to be included within the scope of the appended claims.

Claims (5)

Including 15 to 30% by weight of edible ink binder polyester compound (A) having a carboxyl group, 5 to 20% by weight of edible colorant (B), and 30 to 65% by weight of edible solvent (C). An edible ink composition comprising:
Further comprising a basic compound (D), and
The edible ink composition, wherein the basic compound (D) is contained in an amount of 50 to 150 mol% based on the entire carboxyl group of the polyester compound (A).   The basic compound (D) is at least one selected from the group consisting of ammonia, potassium hydroxide, sodium hydroxide, ammonium carbonate, potassium carbonate, sodium carbonate, and monopotassium citrate. The edible ink composition according to claim 1.   The edible ink composition according to claim 1 or 2, wherein the polyester compound (A) is a copolymer of hydroxy fatty acid (excluding terpenic acid) and terpenic acid. The terpenic acid is one or two selected from the group consisting of sherolic acid, jarlaric acid, epichelolic acid, lacticlic acid, epilacricic acid, raccielloc acid, epilaccichelic acid, and laxialaric acid A mixture comprising the above, and
The edible ink composition according to any one of claims 1 to 3, wherein the hydroxy acid contains alleuritic acid and / or alleuritic acid.   The edible solvent (C) is one type selected from the group consisting of water, ethanol, glycerin, and propylene glycol, or a mixture of two or more types. Edible ink composition.