JP2015171390A - Color printing method for food and color-printed food produced by the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quite novel color printing technique for foods which can achieve high quality and decorativeness by integration with the surface of foods without use of edible seals or edible films often leading to an increase in production cost.SOLUTION: A color printing method for foods comprises forming an edible ground layer region by coating a range 3 of a target food 1, or an apple fruit 1, including a to-be-printed part 2 (target part 2) of the surface of the apple fruit 1 and being slightly wider than the target part 2, uniformly without unevenness, with an inagel varnish layer prepared by mixing water, inagel powder and an edible varnish, with stirring, in a specified ratio, forming an edible ground layer region 4 with an inagel layer based on water and inagel powder (C and D) and forming an edible color display layer 5 composed of an edible ink in the target part 2 of the edible ground layer 4 by using an edible printer (not illustrated) (F) and drying (G).

Description

    The present invention relates to a technology that enables printing / display of characters, symbols, pictures, patterns, etc. on the surface of food, and in particular, fruits, vegetables, rice cakes, rice crackers, sliced dried fruits, chocolate, cookies, manju Edible color printing as well as a field that provides technology that enables edible color printing and display of letters, symbols, pictures, patterns, etc. on the surface of various foods such as slums, bread, cakes, etc. Necessary for materials, machinery and parts from the field of providing, selling equipment, utensils and fixtures necessary for manufacturing, processing, cooking, transport, storage, display, display and sale of used food Fields that provide materials such as wood, stone, various fibers, plastics, various metal materials, etc., the fields of electronic components incorporated in them, the control-related equipment that integrates them, and the distribution of various measuring instruments , The field of power machinery that moves the equipment and appliances, the field that is generally referred to as industrial machinery, such as the electric power and energy that is the energy source, the field of oil, and the equipment and appliances , Research, field related to display, sales, import and export, general, as well as the results of their use, the equipment to build it, and the collection and transportation of garbage debris generated by the operation of equipment There are no unrelated technical fields, such as related fields, recycling fields that efficiently recycle these wastes, and new fields that cannot be envisaged at this time.

(Points of interest)
The red varieties of apple fruit have the property of producing anthocyanins in the skin when they are exposed to sunlight, especially UV rays, during their maturity, and coloring them to a red color with the intensity of light. Use, immediately after unpacking, paste a light-shielding sheet or film on the surface of apple fruit before coloring, and then apply sunlight to other areas than the part where the sticking is done, and then paste them. Peeling and removing the skin, the unburned pericarp surface emerges from the sunburned area, and characters and pictures are displayed to increase the value of the product. Although it has gained popularity as a direct product, yellow varieties of apple cultivars decompose chlorophyll contained in the peel as the fruit matures, and the ground color of the peel gradually turns yellow. Produces Good to, there is a circumstance that can not display the characters or pictures using the coloring due to sunburn.

    For this reason, only apple varieties of red varieties will be sold with characters and pictures displayed. When offering assorted products such as potatoes and boxes, characters and pictures will be displayed only on red apples. In addition, the yellow varieties of apples are not only plain, but the balance of the decoration is lost. In addition, the letters and designs of the red apples are tanned in shades of color (monochrome contrast). ), And it is impossible to develop color variations such as yellow, blue, green, purple, pink, ash, brown, black, etc. There is a limit, and it takes a long time for production, the influence on the quality due to the weather is large, and in order to avoid defects and always obtain good products, multiple apples have the same display contents Since it is assumed that the best crops must be selected and shipped in the harvest season, more stringent quality control is required than in normal cultivation. It has been accompanied by a fatal drawback of becoming expensive.

(Conventional technology)
Reflecting this situation, proposals that could be a breakthrough are not uncommon.
For example, as typified by those proposed in the following Patent Documents 1 (1) to (3), by using an edible ink produced by a method for producing an edible inkjet ink, the skin of apple fruit is obtained. It has been assumed that high-quality color printing can be easily performed on the surface, and such edible inks can be used as described in Patent Document 1 (4) to (6). In addition to the fact that it is possible to efficiently display characters, patterns, etc. on the fruit skin surface of apples and other fruits by applying to the technology of food seals and edible films, the same patent document 1 (7). If edible ink printed on edible film such as the above is pasted on the surface of apple fruit peel, printing and display on apple fruit with edible ink will be realized. Maybe Several techniques are scattered with expectation as that it is not.

However, since apples have the property that an oil (wax) film is formed on the surface of the skin as the sun passes after harvesting, water-soluble water as shown in the former patent documents 1 (1) to (3) is obtained. The edible ink is easily repelled and cannot be printed in beautiful colors. The edible seals represented by Patent Documents 1 (4) to (6) are tanned apples. In the case of display side by side, there may be a difference in texture in terms of the presence or absence of a film part, and depending on how you look at it, there is a risk that the difficulty of ensuring product uniformity may stand out. As shown in Reference 1 (7), after being attached to the surface of processed foods such as eggs with tofu, konjac, and stripped rice cakes, the outer surface of which is wet, starch, collagen, gelatin, oblate The technology that allows the seal part made of ginger, syrup, corn, sugar, etc. to gradually soak into the outer surface of the food, dissolve and disappear, and leave only the printed display part with edible ink, like apple fruit. It is not suitable for dry hard skin, and it is expected that the seal part hardly penetrates the skin, and if the seal part penetrates and disappears into the skin, oil (wax) There is a risk that the film will bounce directly against the edible ink, making it impossible to maintain the shape of the printed part, including dried hard fruit apples, fruits like summer oranges, and other similar properties. It is clear that it is not supposed to be applied to foods.
(1) JP 2010-215687 (2) JP 2010-248440 (3) JP 2010-248441 (4) JP 2010-88329 (5) Utility Model Registration No. 3098030 (6) Japanese Utility Model Laid-Open No. 7-7489 (7) Japanese Patent Application Laid-Open No. 2010-110273

(Awareness of problems)
As described above, the various edible inks and edible seals that have been proposed in the past are all used for apple fruits and other fruits with dried hard skin or foods with similar properties. It has never been possible, and it has been located in the apple kingdom and has been providing high-quality, high-value-added products that respond to customers and market needs that are deeply involved in apple for many years. Based on the various knowledge gained from them and information from the market and stores, in addition to the color luster of the fruit itself, in addition to the color luster of the fruit itself, it will be innovative and designable. The realization of an apple with an excellent appearance can be realized with a new technical concept not found in conventional methods, thereby further expanding the sales of apples and other fruits, and the local economy falling due to natural disasters. Which has led to the keenly aware of the need to connect to a speedy recovery as possible.

(Object of invention)
Therefore, the present invention can achieve high quality and decorativeness by integrating with the surface of food without using conventional edible seals and edible films that increase the production cost. Judging whether it is possible to develop color printing technology for new foods, we quickly started development and research, and repeated trial and error over a long period of time and many trials and experiments while seeking guidance from the Prefectural Agricultural Experiment Station. As a result, the present invention has finally succeeded in realizing a color printing method for a novel food and a color printing food having a novel structure produced thereby. The configuration will be described in detail together with an example representing the above.

(Structure of the invention)
As clearly understood from the embodiments representing the present invention shown in the drawings, the color printing method for food of the present invention basically comprises the following constitution.
That is, an oil (wax) layer originally formed on the skin surface by degreasing as appropriate, including a printing target portion determined as a portion having less unevenness on the fruit skin surface and slightly exceeding the printing target portion. Water: Ignal (registered trademark) powder: Confectionery varnish is stirred and mixed in a volume ratio of 1: 2: 1 to 2 with respect to the secured surface treatment range. After forming an edible ground layer area that is uniformly coated with a layer and inspecting the edible ground layer for bubbles and film unevenness, the printable area on the edible ground layer area is printed The edible color display layer made of edible ink is formed and dried by an edible printing machine, and the edible undercoat layer including the edible color display layer is made of confectionery varnish so as to exceed the range. Color printing method for foods with a structure that is hermetically covered with an exterior coating layer To become.

(Related invention)
In relation to the above-described color printing method for fruit foods, the present invention includes a color printing food produced by the color printing method.
That is, the oil (wax) originally produced on the surface of the pericarp by appropriately degreasing the area to be printed including the determined target area on the surface of the harvested fruit pericarp and the area slightly exceeding the target area to be printed. ) The water-soluble gelling agent obtained by removing the layer and stirring and mixing water: Ignal (registered trademark) powder: confectionery varnish at a volume ratio of 1: 2: 1 to 2 with respect to the secured ground treatment range.・ Edible ground layer area uniformly coated with varnish layer was formed, and an edible color display layer made of edible ink was formed and dried on the appropriate place to be printed on the edible ground layer area. On top of the edible undercoat layer region including the edible color display layer, the outer cover layer composed of a confectionery varnish is formed so as to be hermetically covered so as to exceed the range. Manufactured by the color printing method of the food which forms the basis of the invention It can be referred to as color printing food.

    As described above, according to the color printing method for foods of the present invention, unlike the conventional ones, it has an oil (wax) layer of the target foods from the characteristic features as described above, and edible ink. An edible undercoat layer is formed with a water-soluble gelling agent layer containing Ignal (registered trademark) as a main component on the surface with the property of repelling edible color, and an edible color display layer made of edible ink is formed. By enabling the establishment of edible color printing, for example, the surface of various fruit peels such as apples, where edible color printing was previously impossible, can be clearly displayed as fine images. It can be printed and displayed, can be stably fixed, and can have excellent characteristics that the commercial value of various foods can be greatly increased in a short time and efficiently.

    In addition, to form an edible undercoat layer that is uniformly coated with water, a water-soluble gelling powder, and a water-soluble gelling agent / varnish layer obtained by stirring and mixing food varnish at a predetermined ratio. As a result, the food varnish dramatically improves the adhesiveness and adhesion of the water-soluble gelling agent / varnish layer (edible ground layer), and dramatically improves the durability of the edible ground layer. Therefore, the range including the edible color display layer is protected from external force, and it is possible to more reliably prevent unnecessary cracking, peeling, chipping, and other damage, and the edible has excellent durability. Color display can be realized

    An oil (wax) that is originally generated on the skin surface by appropriate degreasing treatment, including a desired printing target location determined as a location with few irregularities on the fruit skin surface and slightly exceeding the printing target location. ) A water-soluble gelling agent obtained by removing the layer and stirring and mixing water: Ignal (registered trademark) powder: confectionery varnish in a volume ratio of 1: 2: 1 to 2 with respect to the secured ground treatment range.・ By forming an edible undercoat layer area in the varnish layer, a stronger edible undercoat layer area can be attached within the degreased undercoat area, and on the water-soluble gelling agent undercoat area. An edible color display layer made of edible ink is formed and dried on an appropriate place to be printed by an edible printing machine, and the range is exceeded on the edible base layer area including the edible color display layer. Covered in a sealed manner with an outer covering layer made of confectionery varnish What is made to protect both the edible undercoat layer area and the edible color display layer from external force, can more reliably prevent the occurrence of cracks, chipping, peeling, etc., For example, regardless of red color or yellow color, an excellent effect is achieved in that precise and clear characters and pictures can be efficiently printed within a short time after harvesting.

    Form an edible undercoat layer area that is uniformly covered with water and a water-soluble gelling agent in a range that includes the determined print target location on the target food surface and slightly exceeds the print target location. In addition, by forming and drying an edible color display layer made of edible ink on a suitable place to be printed on the edible underlayer region, the surface contains an oil component, Can be clearly and easily printed and displayed on various foods that have been made impossible to print edible color, and can provide a color printed food with much higher added value.

    Furthermore, the oil (wax) layer originally generated on the skin surface is appropriately removed by degreasing treatment, and water: Ignal (registered trademark) powder: confectionery varnish 1: 2 within the ensured ground treatment range. : A water-soluble gelling agent / varnish layer formed by stirring and mixing at a volume ratio of 1 to 2 is formed on the edible ground layer region by forming and firmly fixing the edible ground layer region. The edible color display layer can be more reliably protected from cracking, chipping, peeling, etc., and the edible undercoat layer area including the edible color display layer is over the range from the confectionery varnish. It is possible to provide a variety of fruits with even higher added value by covering them with an outer covering layer that is formed in a sealed manner, and in particular, a red system displaying characters, pictures, etc. by tanning action in the field Edible color printing on apples outside the apples It is possible to realize various design developments and realize individual characters, symbols, pictures, illustrations, photographs, etc. for each event, and by printing after harvesting, weather and pests Can be manufactured reasonably and efficiently so that it can select and print fruits with excellent quality, which can greatly reduce the defect rate and produce much more economically. In addition, for example, we installed an edible printing machine at the store, received a request from the customer, selected the target fruit on the spot, printed and packaged and sold edible color as desired. It is possible to provide new color-printed foods with excellent purchasing power, such as the possibility of realizing forms.

In implementing the present invention having the above-described configuration, the best or desirable mode will be described.
The food surface is a food that can maintain a certain shape such as solid or semi-solid, mainly fruits, sugar beet, more specifically cabbage, Chinese cabbage, carrot, onion, lemon, tangerine, apple, pear, Can be strawberry, cherry peach, peach, etc.

    The target food surface can be printed anywhere on the target food surface as long as it is desired to be printed on the target food surface, and there is no particular restriction, but the edible color display layer using edible ink is printed accurately. Therefore, it is desirable to select a portion with as few irregularities as possible, and the yield rate can be improved by printing in a smooth range. As shown in the examples described later, oil ( When a wax) layer is present and edible ink is repelled, the oil (wax) layer in a range slightly exceeding the print target portion is removed by appropriate degreasing treatment, and the base treatment range is increased. It is necessary to ensure that the degreasing treatment can be safely eaten after volatilization, for example, medical ethyl alcohols and drinking alcohol so that the food and its surface are not burdened so much. It can be said that it is desirable to wipe off with a sponge or cloth soaked with alcohol, and is not limited to degreasing treatment with alcohols. For example, organic solvents, ozone solutions, surfactants, edible Oils and other cleaning ingredients that have been confirmed to be safe and edible can be used alone or mixed, or used in combination in the order of use. In addition to being able to be degreased and hygienically dried, it is also possible to degrease by ultrasonic cleaning or steam cleaning without using a cleaning agent or the like.

    The edible undercoat layer area has a function that allows the edible color display layer to be formed later to be firmly fixed in a range slightly exceeding the desired print target location determined as the surface location of the target food, and is safe and target food. It must be able to be eaten without affecting the quality of the taste and texture of the food, and should have a composition suitable for fixing and drying without repelling edible ink, and more specifically Specifically, it must be uniformly coated with a water-soluble gelling agent layer mainly composed of water and Ignal (registered trademark) powder, and as shown in the examples described later, for example, fruit When harvesting the surface of a food product that has the property of naturally forming an oil (wax) layer after harvest, such as the skin surface, mix water, Ignal (registered trademark) powder, and confectionery varnish in appropriate proportions. Water-soluble gelling agent / varnish layer It is desirable to form, and more specifically, a water-soluble gelling agent / varnish layer obtained by stirring and mixing water: Ignal (registered trademark) powder: confectionery varnish at a volume ratio of 1: 2: 1-2. It can be said that it is good to coat uniformly with no unevenness.

    In addition, the edible ground layer area is uniformly coated with a water-soluble gelling agent layer mainly composed of water and Ignal (registered trademark), or water, Ignal (registered trademark) powder, food The varnish should be uniformly coated with a water-soluble gelling agent / varnish layer obtained by stirring and mixing at a predetermined ratio. For example, it has the same composition and is attached to food. In addition to the pre-processed film having adhesiveness or adhesiveness on the surface, it can be made stickable to the food surface, water-soluble gelling agent solution, water-soluble gelling agent / varnish solution It can be formed by spraying, coating, transferring, printing, etc., forming various surfaces such as transparent, translucent, opaque, colored, colorless, mirror surface, matte, sweet, sour, pungent Various seasoning ingredients such as It can be such as those comprising appropriately full extent.

    The edible color display layer bears the function of enabling various display contents such as letters, symbols, pictures, and patterns to be displayed in color using edible ink on the target food surface, and is a clear print. It can be safely eaten and printed directly by the edible printing machine on the edible ground layer formed on the surface of the target food, regardless of the manual sticking or printing work through film or stamp equipment. It is necessary to perform multi-color printing using two or more colors, and it is necessary to sufficiently dry and fix after printing.

Protect the edible color display layer from damage such as cracks, chipping, and peeling due to external contact and excessive drying, and contamination due to adhesion of water and dirt, etc. on the edible base layer area including the edible color display layer It is possible to coat an exterior coating layer that has a function to perform, and the exterior coating layer must protect the edible color display layer so that it can be seen through and can be eaten safely. Either cover the edible base layer area including the color display layer in a sealed manner, or cover the edible base layer area including the edible color display layer in a sealed state so as to exceed the range. Preferably, as shown in the examples to be described later, the edible undercoat layer region including the edible color display layer should be hermetically covered so as to exceed the range. Specifically, a clear display of the edible color display layer It can have various properties such as transparent, translucent, light coloring, half mirror, lens, etc., and it consists of food varnish considering edible safety and durability It is good to do.
In the following, the configuration of the present invention will be described in detail together with an embodiment representing the present invention shown in the drawings.

The drawings show a typical embodiment of the color printing method for food according to the present invention and the technical idea of the color printed food manufactured thereby.
It is a flowchart which shows one specific example of the color printing method of foodstuffs. It is a front view which shows the apple fruit which carries out color printing in order of a process. It is sectional drawing which shows the apple fruit skin surface and its oil (wax) layer. It is sectional drawing which shows the apple fruit skin surface which carried out the degreasing process. It is sectional drawing which shows the apple pericarp surface which formed the edible ground layer area. It is sectional drawing which shows the apple peel surface which formed the edible color display layer. It is sectional drawing which shows the apple fruit skin surface which coat | covered the edible color display layer with the exterior coating layer. It is a front view which shows an example of the apple fruit which gave edible color printing.

The examples shown in FIG. 1 to FIG. 8 include Ignal (registered trademark) for a range 3 that includes the print target portion 2 on the surface of the apple fruit 1 that is the target food 1 and slightly exceeds the print target portion 2. After forming (C, D) the edible foundation layer region 4 with the water-soluble gelling agent layer as a component, the edible printing machine (see FIG. A typical embodiment of the color printing method for food according to the present invention, in which the edible color display layer 5 made of edible ink is formed (F) and dried (G). Is.
In the following, the structure of the apple fruit 1 which is an example of the color printed food 1 will be sequentially shown according to the example of the color printing method of the food of the present invention.

As can be clearly understood from each of these drawings, the color printed food 1 of the present invention includes a printing target portion 2 determined (A) in a portion with less unevenness of the harvested apple fruit 1, and includes the printing target portion 2. Volatile degreasing solution (edible degreasing agent) that can safely eat the oil (wax) layer originally formed on the skin surface 1 after volatilization such as medical ethyl alcohol in the skin surface area 3 slightly above ) Is wiped off with a sponge soaked and degreased (B), and sufficiently evaporated and dried to secure the ground treatment area 3 as shown in FIGS.
Although it can be said that the ground treatment range 3 to be subjected to the degreasing treatment (B) is a partial range including the print target portion 2, it is intended for the purpose of improving work efficiency and mass production. For example, it is possible to degrease the whole apple fruit 1 pericarp surface by washing it.

    As shown in FIGS. 1, 2, and 5, water: Ignal (registered trademark) powder: confectionery varnish is agitated and mixed at a volume ratio of 1: 2: 2 with respect to the ground treatment range 3. After applying the gelling agent / varnish solution (C) to form the edible undercoat layer region 4 (D) uniformly coated without unevenness, after sufficiently drying, bubbles, unevenness, etc. in the edible undercoat layer 4 After visually inspecting (E) for the presence of prints, as shown in FIGS. 1, 2, and 6, the print target location 2 on the edible underlayer region 4 is suitable for the print target location 2. An edible color display layer 5 made of edible ink is formed (F) by an edible printing machine (not shown), and the edible color display layer 5 is sufficiently dried and fixed to prevent dripping or bleeding of ink. G)

The edible undercoat layer region 4 uses a water-soluble gelling agent / varnish formed by stirring and mixing water: Ignal (registered trademark) powder: confectionery varnish at a volume ratio of 1: 2: 2. Water: Ignal (registered trademark) powder: Confectionery varnish A water-soluble gelling agent and varnish solution obtained by stirring and mixing at a volume ratio of 1: 2: 1 can also be used. The volume ratio is most preferably in the range of 1 to 2 with respect to 1: 2 of water: Ignal (registered trademark), and if it is less than 1, sufficient adhesive performance cannot be obtained, and the skin surface 1 is originally provided. If the oil (wax) layer is repelled, there is a risk of unevenness and unpainted areas. If it exceeds 2, the viscosity will be too strong, resulting in unevenness due to thick coating. However, the viscosity and mixing temperature of each material are increased. Depending on various conditions such as the coating temperature, it may be possible to mix and use at an appropriate ratio exceeding the range of the mixing volume ratio of water: Ignal (registered trademark) powder: confectionery varnish of 1: 2: 1 to 2, respectively. Is possible.
The edible printing machine uses an edible inkjet printer (manufactured by Mastermind, model number NMP813BT-F), and appropriately adjusts the color adjustment software of the personal computer so as to obtain a clear print quality.

    As shown in FIGS. 1, 2, and 7, the confectionery is formed on the edible base layer region 4 including the dried edible color display layer 5 and over the edible base layer region 4 by about 1 cm. The outer covering layer 6 made of varnish is applied and the region is covered and dried (H) in a hermetically sealed state. As shown in FIGS. 2 and 8, the edible color printing finished apple fruit 1 After the final inspection (J) is performed, packaging (K), such as boxing, filling, packing, etc., is performed as appropriate, and shipment (L) is performed.

(Operation / Effect of Example 1)
The color printing method of the food of the present invention having the above-described configuration, and the color printed food 1 produced by the method, have repeated various trials and errors over the long term in developing the food, and have an ideal quality. We will show the actions and effects achieved sequentially according to the development process.

1) Edible printing machine: Introduction of NMP813BT-F First prototype (test target: about 30) Target food (apple) 1 variety: Sometimes the world's most edible printing machine (not shown) apple fruit surface When directly printed on 1, the edible ink (edible color display layer 5) is not placed, and the edible color display layer 5 does not settle and hangs down. It is found that edible ink does not fix, and in order to overcome this problem, a liquid capable of fixing edible ink (edible color display layer 5) is applied to apple 1 and dried before printing. Therefore, it was judged that it could be completed, and it was decided to try water-soluble gelling powder.

    A water-soluble gelling agent solution prepared by mixing water and Ignal (registered trademark) powder at a volume ratio of 1: 1 was applied onto printing paper, dried, and then printed by an edible printing machine. Since it was confirmed that the edible ink (edible color display layer 5) stayed without being repelled and could be printed with sufficient quality, the water-soluble gelling agent solution was soaked in a sponge (not shown) When printing was attempted with an edible printing machine after directly applying and drying to the skin surface of the fruit 1, printing unevenness occurred and sufficient print quality could not be obtained.

2) Examination of water / water-soluble gelling agent powder mixing ratio and ground treatment Second prototype (test target: about 40) Target food (apple) 1 Variety: Toki, Shinano Gold Next, water and Ignal ( (Registered Trademark) Powdered water-soluble gelling agent solution prepared at a volume ratio of 1: 2 is applied to the surface of apple fruit 1 pericarp, and is not fixed on the pericarp surface while confirming the state. I tried to print with an edible press after rubbing with a sponge and drying, but the print quality was not much different from the previous one.

    According to the experiments conducted so far, apple fruit 1 that can uniformly apply and form edible ground layer region 4 with a water-soluble gelling agent solution evenly, regardless of apple 1 varieties, and unevenness and unpainted areas are generated. As apple fruit 1 is present, the problem that printing quality cannot be stabilized has emerged, and as a result of consulting with industrial test laboratories and receiving advice to solve this problem, the harvested apple 1 If the oil (wax) layer 10 on the surface of this apple 1 fruit skin can be removed cleanly by teaching that the wax) layer 10 comes out, the edible undercoat layer area 4 by the water-soluble gelling agent solution is evenly distributed. Grab the clue that it can be applied homogeneously, soak in wine while searching for internet advice and repeated advice from industrial laboratories, or use disinfectant ethyl alcohol as a sponge. After wiping the apple 1 pericarp surface and applying a water-soluble gelling agent solution, the edible undercoat layer area 4 is more uneven than when applied directly without applying a base treatment by degreasing. It was found that it could be applied and dried uniformly without any problems.

3) Experiment using woodwork varnish 3rd trial production (test object: about 40) Variety of target food (apple) 1: Occasionally, Shinano Gold sponge is soaked with ethyl alcohol for disinfection and oil (wax) layer 10 is applied. I tried to print on the apple fruit 1 that was wiped off with an edible printing machine, and I was able to obtain a higher print quality than the previous trial, but I still feel unevenness in the edible base layer area 4 The defect that quality is not stable remains, and based on the above results, if the edible undercoat layer region 4 can be formed uniformly and uniformly with the water-soluble gelling agent solution, the quality of edible printing can be significantly improved. If the water-soluble gelling agent solution is applied with an adhesive liquid, the edible ground layer region 4 can be fixed uniformly and uniformly by the adhesive force. You Which it has led to.

Therefore, as an experimental attempt, after applying woodworking varnish as an adhesive liquid to the surface of apple fruit 1 pericarp and drying it, printing with an edible printing machine was attempted. I could not obtain it, and when I asked the cause of the edible printing machine manufacturer, the woodwork varnish repels edible ink, so I received the instruction that it was impossible to put it to practical use, and the experimental result as it is However, the applicant of this application has aimed at the varnish. First, the woodwork varnish cannot be used for food. I decided to test with a varnish.
This confectionery varnish (trade name: rack base) had the advantages of faster drying and stronger adhesion than the woodwork varnish used in the experiment.

4) Examination of the use of varnish for confectionery 4th trial production (test object: about 30) Variety of target food (apple) 1: Venus, when Shinano Gold sponge is soaked with ethyl alcohol for disinfection and oil (wax) layer 10 An experiment was conducted in which confectionery varnish (trade name: rack base) was applied to the apple fruit 1 that had been wiped off, and the edible undercoat layer area 4 was applied to the dried undercoat area with a water-soluble gelling agent solution. However, the fixing rate of the edible ground layer region 4 remains at about 70%, and there remains a defect that holes and bubbles are generated in some places. Further, while repeating these experiments, several days ago It was found that the edible color display layer 5 formed by the edible printing was cracked and peeled off due to drying in all of the four edible underlayer regions.

5) Reconsideration of water-soluble gelling agent solution concentration 5th trial production (test target: about 30) Variety of target food (apple) 1: Venus, Shinano Gold Water and Ignal (registered trademark) powder volume ratio 1: I thought that the water-soluble gelling agent solution prepared at a ratio of 2 was too thick, and tried edible printing by changing the ratio of water and Ignal (registered trademark) powder, but the concentration was too light And apple fruit 1 It does not settle on the skin of the fruit skin, and if it is too dark, before applying to the edible printing machine, confirm that the phenomenon that the edible undercoat 4 peels off and falls off occurs. Based on this, the volume ratio of water of the water-soluble gelling agent solution forming the edible undercoat layer 4 to Ignal (registered trademark) powder is returned to a ratio of 1: 2, and the sponge is soaked with disinfecting ethyl alcohol and oil ( (Wax) layer 10 for wiping apple fruit 1 for confectionery After applying and drying the edible undercoat layer area 4 with a water-soluble gelling agent solution to the base area that has been coated and dried (trade name: rack base), When confectionery varnish (rack base) was overcoated, it turned out that it was glossy and could not be peeled off, and it was finished in a state where it did not fall off when immersed in water.

    However, the apple fruit 1 that has been previously completed and once cracked or cracked in the edible ground layer region 4 is coated on the edible ground layer region 4 including the edible color display layer 5 (trade name) : It was confirmed that cracks and cracks would remain even after overcoating (rack base), so the edible undercoat layer area 4 was evenly applied evenly, and after drying, cracks and peeling occurred even after a long time. We decided that we should concentrate our efforts on developing no water-soluble gelling agent solution.

6) Examination of edible base layer area 4 by applying twice Twisted trial (test object: about 30) Target food (apple) 1 Variety: Venus, Shinano Gold Sponge soaked with ethyl alcohol for disinfection (oil) A water-soluble gelling agent solution having a volume ratio of 1: 2 of water and Ignal (registered trademark) was applied to apple fruit 1 from which the (wax) layer 10 had been wiped off, dried and then water-soluble again. As a result of applying and drying the gelling agent solution twice in total, it was possible to form an edible undercoat layer region 4 that was uniform and free of bubbles and holes, and was edible. The printing finish by, however, has made it possible to print at a higher quality than ever before, but the edible undercoat layer area 4 that has been applied twice cracks over time and the edible color display layer 5 peels off. Or cause it to fall out Even if the confectionery varnish (trade name: rack base) is overcoated in an attempt to prevent this, it does not prevent cracking or falling off, and the defect that the quality is liable to occur remains. When combined with the drying process, it takes a considerable amount of time and deteriorates the production efficiency. Therefore, it was concluded that another method should be considered.

7) Use of water-soluble gelling agent and varnish solution, and examination of overlapping condition of edible base layer area 4, edible color display layer 5 exterior covering layer 6 Prototype 7th (test target: about 50) (Apple) 1 Variety: Venus, Shinano Gold Based on the history so far, try to mix all of water, Ignal (registered trademark) powder, confectionery sushi (rack base), and then apply to apple fruit 1 However, as mentioned above, Suni (rack base) knew that he would play edible ink, so he made a prototype without much expectation.
When making a water-soluble gelling agent / varnish solution prepared by mixing water, Ignal (registered trademark) powder, confectionery suni (rack base) at a volume ratio of 1: 2: 1 to 2, confectionery suni (rack base) When applied to the surface of apple fruit 1 pericarp, it can be applied without flipping the entire surface, and it can be printed neatly, just like when applied twice, and then dried and used for confectionery. When I looked at the situation for a few days after overcoating the suni (rack base), the cracks started to form from the portion of the edible base layer area 4 that was not coated with the confectionery suni (rack base) as time passed. In the previous prototypes, the edible ground layer region 4 was applied and formed to be considerably larger than the printing target location 2, but this was changed to make the edible ground layer region 4 slightly larger than the printing target location 2. Edible after painting and edible printing A confectionery suni (rack base) that is about 1 cm larger than the formation area 4 is overcoated to form the exterior covering layer 6. After printing, cracks do not occur even after a long period of time, and it is sufficiently resistant to display and sales. Good products can be obtained.

(Conclusion)
As described above, the color printing method for food according to the present invention and the color printed food produced thereby enable the intended purpose to be achieved evenly by the novel configuration, and can be easily produced. Compared with the color printing technology for foods from foods, foods having an oil (wax) layer such as the fruit skin surface can be efficiently and clearly color-printed, and the display quality of edible color printing and In addition to greatly improving durability and making it much cheaper and cheaper, in addition to the traditional display technology for characters and pictures of sunscreen red apples, it is completely new possible Color printing of food can be realized, so it is easy and precise for apples that have been considered impossible until now, especially for yellow apples that were difficult to pattern with sunlight. It is possible to realize patterning by printing and produce various foods not only for apple farmers but also for apple farmers who want to add new added value to apples for further spread and expansion. In addition, the food industry that sells and the food distribution industry that wants to increase the amount of food distributed are well-established, and are widely appreciated by companies and general households that want a variety of foods with excellent design. It is expected that it will be used and spread over the years.

1 Apple fruit (target food, pericarp surface)
10 Same food oil (wax) layer 2 Print target area 3 Ground treatment area (degreasing treatment with edible alcohol)
4 Edible ground layer area (water: Inagel <registered trademark> powder: varnish for confectionery)
5 Edible color display layer 6 Exterior coating layer (varnish for confectionery)
A Determination of print target position B Degreasing treatment C Application of water-soluble gelling agent solution D Fixation of edible underlayer E Inspection of edible underlayer F Printing of edible color display layer G Fixation of edible color display layer H Exterior coating Layer coating J Final inspection K Packaging L Shipment

Claims (2)

    The oil (wax) layer originally generated on the skin surface is appropriately removed by degreasing the area that includes the determined printing target area on the fruit skin surface with less irregularities and slightly exceeds the printing target area. In the water-soluble gelling agent / varnish layer formed by stirring and mixing water: water-soluble gelling agent powder: confectionery varnish at a volume ratio of 1: 2: 1 to 2 with respect to the ensured surface treatment range. After forming an edible undercoat layer uniformly coated with no unevenness, and inspecting the edible undercoat layer for bubbles and film unevenness, the water-soluble gelling agent undercoat layer is placed in an appropriate place on the printing target area. On the other hand, an edible color display layer made of edible ink is formed and dried by an edible printing machine, and then the edible undercoat layer region including the edible color display layer is used to exceed the range. A food color characterized by being hermetically covered with an outer covering layer Printing method.     An oil (wax) layer originally formed on the surface of the pericarp by appropriate degreasing within a range that includes the target area to be printed, which is determined to be a part with less unevenness on the surface of the harvested fruit pericarp. The water-soluble gelling agent / varnish is prepared by stirring and mixing water: water-soluble gelling agent powder: confectionery varnish at a volume ratio of 1: 2: 1 to 2 with respect to the secured base treatment range. After forming an edible undercoat layer region uniformly coated with a layer, and forming and drying an edible color display layer made of edible ink on a suitable place to be printed on the edible undercoat layer region, The edible undercoat layer region including the edible color display layer is hermetically covered with an exterior coating layer made of confectionery varnish so as to exceed the range. A color printed food produced by the method for color printing food according to Item 1.

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