JP2017222788A - Coating material for food packaging and food packaging container using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel food packaging technology capable of extremely enhancing performance of antibacterial, antimold, deodorization or the like, largely extending effective period thereof and markedly enhancing performance for holding freshness of foods.SOLUTION: There is provided a coating material 1 for food packaging manufactured by mixing a fixer 4 which is at least one of a paste 40 consisting of at least one of alginate ester, sodium alginate and potassium alginate and a thicker 41 consisting of at least one kind of konjak powder, plantain, guar gum and other starches, water 5 and ethyl alcohol 7 by proper amounts respectively with nano-platinum particles starch sugar mixture P manufactured by mixing nano-platinum particles 2 and starch sugar 3 which is at least one of trehalose (registered trademark) and cyclodextrin.SELECTED DRAWING: Figure 1

Description

    The present invention relates to food packaging technology, and in particular, packaging paints that can be used for packaging products effective for packaging and storage of vegetables and fruits, packaging materials using the same, and In addition to the field of manufacturing and providing packaging supplies using them, as well as the field of providing and selling facilities and equipment necessary for its transportation, storage, assembly and installation, these materials, machinery and equipment, parts Fields that require materials such as wood, stone, various fibers, plastics, various metal materials, etc., the field of electronic components incorporated in them, the control-related equipment that integrates them, the field of various measuring instruments Fields generally called industrial machinery such as the field of power machines that move the equipment and appliances, the electric power that is the energy and the electric and energy fields that are the energy source, , Testing and researching these facilities and equipment, fields related to their display, sales, import and export, general results, and the results of their use, and the operation of equipment and equipment to create them There are no technical fields that are not related to the fields related to the collection and transportation of trash and the like, the recycling field that efficiently reuses the trash, and the new fields that cannot be envisaged at this time.

(Points of interest)
In producing, transporting and selling fruits and vegetables, it is extremely important to improve the appearance of colors and shapes and deliver them to customers as fresh as possible. Films of fresh foods for these purposes For example, the packaging materials are not limited to the one in which a plurality of ventilation holes are drilled in place to prevent the retention of ethylene gas, but the technology to increase the sugar content in terms of taste and provide more delicious products The development of is being promoted in various fields. For example, as represented by the one proposed in Patent Document 1 (1) below, an inorganic antibacterial agent is used alone or an antibacterial substance derived from a natural product for synthetic resin polyolefin , Aloe, catechin, hinokitiol, and a combination of one kind selected from Munetake bamboo, and a packaging container and a packaging material film comprising the packaging container, The resin layer that makes up the wearing material film contains inorganic antibacterial agents and antibacterial agents derived from natural products alone or in combination as antibacterial agents, and a larger amount of antibacterial agents than when using conventional inorganic antibacterial agents alone Even if it is not used, sufficient antibacterial action can be obtained.

    Packaging products such as resin packaging films kneaded with active ingredients in this way have already been put into practical use by the applicant's own development efforts. Ingredients are exposed on the surface only about 1% of the mixing amount, and the effects of maintaining the freshness and improving the taste of fruits and vegetables are less than the mixing ratio of the active ingredients, and an effect commensurate with the production cost is obtained. In the case of entrusting production to a resin film manufacturer, mass production becomes the standard production system, making it difficult to produce small quantities. Production of packaging products for production foods has a new problem that the production cost is high and it is not necessarily suitable. Furthermore, when transparent additives such as the above are mixed with transparent resin film, transparency It is necessary to cope with the new restriction that it is difficult to visually check the quality of the packaged fresh foods, and that the film strength is reduced and it becomes easy to cause wrinkles and tears. Therefore, it was considered quite difficult to expand the scope of its use.

(Conventional technology)
For these reasons, the applicant of the present application has come up with the idea that the active ingredient cannot be applied directly to the resin film, and after repeating various thoughts and errors, it is shown in the following Patent Document 1 (2). Poleha (registered trademark, hereinafter all the same and the description is omitted) containing polyphenols and trehalose (registered trademark, hereinafter all the same, and omitted) are provided at a predetermined weight ratio. A food packaging paint formed by mixing water with a predetermined weight ratio and sodium alginate so that sodium alginate and the water have a predetermined weight ratio is in contact with or close to at least the food to be packaged in the package. We have already developed food packaging products using food packaging coatings that have a taste-adjusting coating layer area that has been fixed in a thin film layer over an appropriate range. To provide an improvement of the degree maintenance and long-term storage performance, and the let complete the extensive technological development.

    In such a situation, overlooking the same technical field, many techniques for adding a polyphenol component to a printing ink have been developed. As represented by the following Patent Document 1 (3), 3 to 70% by weight of pigment. A printing ink for maintaining freshness, comprising 1 to 1000 parts by weight of a hinokitiol and / or an inclusion compound of hinokitiol with respect to 500 parts by weight of the printing ink, and the printing ink is printed on a cellophane or a synthetic resin film A packaging material for maintaining the freshness of fruits and vegetables, a method for maintaining the freshness of fruits and vegetables using the packaging material, and a wrapping paper for maintaining the freshness of food, such as Patent Document 1 (4), which is paper or non-woven fabric Impregnated with an aqueous solution containing hinokitiol or a metal complex thereof or a salt thereof or an alcohol solution having an alcohol content of 20 to 60% Such as coating or printing and packaging paper is scattered.

    In addition, when a wide range of technologies using antibacterial components other than the above-mentioned polyphenol components is widely observed, nanoplatinum ((registered trademark, hereinafter, all the same and displayed) as shown in Patent Document 1 (5). Air filter using a filter net manufactured from synthetic resin fibers containing particles, an air conditioner equipped with the air filter, and a nanoplatinum aqueous solution as in Patent Document 1 (6) A water supply tank, a piezoelectric vibrator for transmitting ultrasonic vibration energy to the water surface of the water supplied from the water supply tank to generate a fine mist, and a fan for blowing air to discharge the mist into space A humidifier that performs sterilization and deodorization by platinum shield with platinum particles of the nanoplatinum aqueous solution, as shown in Patent Documents 1 (7) and 1 (8) , Technologies related to the manufacture of food additives, foods, and beverages containing platinum nanocolloid (registered trademark, all the same below and omitted) have been developed. There seems to be no existing technology for food packaging.

    The technique of adding a polyphenol component to the printing ink as shown in the above-mentioned Patent Document 1 (3) uses a printing ink usually used for food packaging as a printing ink to be added. Printing is generally applied on the outside of the film or container that does not directly touch fresh food, and is not printed on the inside of the packaging container. Directly touching fresh foods by applying the technique of adding ingredients directly to the inner surface of the food packaging may leave concerns about food safety, and Patent Document 1 (4) The materials shown in the above are not the ones that have been positively added to the surface of base materials such as wrapping paper and non-woven fabrics, such as general paints, that can be stably fixed. If the antibacterial solution is fixed on the wrapping paper over a long period of time, the wrapping paper or non-woven fabric can be used to stabilize the solution. Precise irregularities for fixing to the surface and pre-treatment such as applying an adhesive is required, and it is difficult to achieve long-term freshness maintenance without using such fixing technology. was there.

In addition to the technology for fixing antibacterial / deodorizing components to packaging films, Patent Document 1 (5) to Patent Document 1 (8) remove air antibacterial / deodorizing components and active oxygen in the human body and skin. No technology has yet been developed for fixing nano-platinum particles, which are used as ingredients, etc., to food packaging films and food packaging containers in a more stable manner.
(1) JP 2003-93011 A (2) JP 2015-86334 A (3) JP 6-16990 A (4) JP 2009-29491 (5) JP 2011-94828 A (6) Japanese Patent Laid-Open No. 2006-40508 (7) Japanese Patent Publication No. 2009/125847 (8) Japanese Patent Publication No. 2005/023467

(Awareness of problems)
As mentioned above, previously proposed technologies for adding various antibacterial and deodorizing ingredients to printing inks can be fixed on the surface of packaging film that comes in direct contact with foods unless food safety of printing inks is ensured. In addition, wrapping paper coated with an antibacterial solution with weak fixability has a problem that it is difficult to maintain freshness over a long period of time. In addition, the present inventor and applicant who have focused on the present situation that printing ink using nanoplatinum particles and food packaging films and food packaging containers using the same have not yet been developed. In addition to searching for antibacterial components in food packaging coatings that have already been produced, a component that can provide a sterilizing effect over a long period of time, and more stable fixability during painting and printing While searching for the use of thickeners and thickeners that can ensure high safety even when directly in contact with foods, trial production of these ingredients in various combinations, Further improvements in food packaging coatings that can maintain the freshness of food for a longer period of time while ensuring safety, and a configuration that enables food packaging containers using the same. It came to realize the necessity.

(Object of invention)
Therefore, this invention is a new food packaging technology that can greatly enhance the performance of antibacterial, antifungal, deodorant, etc., greatly extend its effective period, and further enhance the performance of maintaining the freshness of foods. As a result of the long-term trial and error, many trial productions, and experiments, we finally started developing and researching it from the judgment that it could not be developed. The present invention has succeeded in realizing a food packaging container having a novel structure using the same, and the configuration thereof will be described in detail below together with an embodiment representing the present invention shown in the drawings.

(Structure of the invention)
As clearly understood from the embodiments representing the present invention shown in the drawings, the food packaging paint of the present invention basically comprises the following constitution.
That is, a mixture of nanoplatinum particles and starch sugar, which is a mixture of nanoplatinum particles and starch sugar, is mixed with an appropriate amount of a fixing agent of at least one of a thickener and a thickener, water, and ethyl alcohol. This is a food packaging paint having a gist configuration.

    The food packaging paint having this basic structure, if expressed in different ways, is a nanoplatinum particle in which nanoplatinum particles are mixed with at least one starch sugar of trehalose (registered trademark) and cyclodextrin. -It becomes the coating material for food packaging which consists of a structure formed by mixing a starch sugar mixture with the fixing agent of at least any one of a thickener and a thickener, water, and ethyl alcohol.

(Related invention)
In relation to the aforementioned food packaging paint, the present invention also includes a food packaging container using the same.
That is, a container body that can package a part or all of the food to be packaged, and when the food to be packaged is stored, part or all of the inner wall of the container body that faces the packaged food In addition, a food packaging container having a constitution in which a sterilized coating film in which a coating liquid containing the coating material for food packaging described in any of the above as a main component of the present invention as a main component is provided in a film form is provided. is there.

    As described above, according to the food packaging paint of the present invention, unlike the conventional ones, the sterilization effect that is remarkably excellent by the nanoplatinum particle / starch sugar mixture from the unique characteristic configuration as described above. In addition to packaging fresh foods such as fruits and vegetables after harvesting so that their external aesthetics, transportability, and display properties are enhanced, packaging objects such as fruits and vegetables after packaging In addition to preventing oxidative damage, it is possible to provide a new packaging technology that can improve the sugar content and improve the quality after harvesting, especially by mixing the nano platinum particle / starch sugar mixture with water. Print or use various printing technologies, stamping technologies, spray coating technologies, brush coating technologies, etc. for various articles that have hygroscopicity, moderate surface roughness, unevenness, etc. In addition, since a fixing agent is added to the nanoplatinum particle / starch sugar mixture, a water-based coating liquid containing the food packaging paint as a main component is applied to the inner wall of the food packaging container as a film. Compared to conventional products, it can maintain the freshness of fresh food products for a longer period of time, and has excellent antifungal, antibacterial, deodorant, and freshness retention effects over the storage period It is possible to obtain a great feature of achieving this.

    In addition, at least one of a thickener consisting of at least one of alginate, sodium alginate and potassium alginate, and a thickener consisting of at least one of konjac flour, psyllium, guar gum and other starches Because it contains a fixing agent, until now, if printed on an article having a smooth surface and flexibility, such as a synthetic resin film, the printed layer will peel off and drop off after drying. Those that had difficulties can greatly improve them and obtain excellent fixing stability, and can also add humidity control and moisturizing functions. We can provide a wider range of printed and painted products that have outstanding functions such as freshness maintenance, sugar content adjustment, and taste improvement that could not be obtained. It becomes to achieve the new effect that way.

    In addition, some or all have a container body made of a transparent or translucent hard material, and some or all have a container body made of a transparent soft synthetic resin film bag, Since a sterilized coating film containing various food packaging paint components can be stably fixed, it can be used in a wide variety of food packaging containers. By providing a sterilized coating film in which a water-soluble coating liquid diluted 100 to 1,000 times with water is fixed in a continuous film shape, the inner wall of the container body can be sterilized more reliably and long-term The effect of maintaining the freshness more reliably is achieved, and what is provided with a sterilized coating film in which the same water-based paint liquid is fixed in an intermittent film form is compared with a sterilized paint film fixed in a continuous film form, container Large scale peeling from the side wall of the body can be prevented more reliably and its fixing power can be greatly improved, and the shape of the interrupted film is displayed in a translucent pattern, and sterilization Since the presence of the coating film can be visualized more clearly, it will be effective in promoting and appealing the existence of the active ingredients in food packaging containers. Therefore, it is possible not only to reliably prevent misuse, simplify the confirmation work, and greatly increase production efficiency, but also enable users and consumers to smoothly understand the effects. In addition to increasing the added value of the food packaging containers in the market, and packaged foods using the same, a transparent part of the container body remains between the sterile coating films scattered in an intermittent film, thus providing a viewing window ,container It can be assumed that combines the convenience of the quality of the packaging target food in the body easily, it is possible to reliably visual confirmation.

In implementing the present invention having the above-described configuration, the best or desirable mode will be described.
Nanoplatinum particle / starch sugar mixture has antibacterial properties, antibacterial, antibacterial, deodorant, antioxidation, freshness retention of foods to be packaged, and antibacterial properties to improve the preservation of foods to be packaged It must have the function of adjusting the sugar content of the food to be packaged to improve the taste, and should be prepared by mixing the following nanoplatinum particles and starch sugar in an appropriate ratio.

    Nanoplatinum particles have antibacterial properties while ensuring the food safety of foods to be packaged, and are responsible for the functions of antibacterial, antibacterial, deodorant, antioxidant and freshness preservation of foods to be packaged. The platinum particles should be made into ultrafine particles of nanometer (parts per billion) size, for example, platinum fine particles of 1 to 20 nanometers. If the expression can be changed, it can be replaced with platinum nanocolloid or platinum nanocolloid, and as shown in the examples described later, it is desirable that it be manufactured by Everyware Co., Ltd.

    Starch sugar has antibacterial properties, improves the preservability of foods to be packaged, and has the function of adjusting the sugar content of foods to be packaged to improve the taste, and must be a natural carbohydrate component derived from starch. For example, as shown in the examples described later, it is desirable to use at least one of trehalose and cyclodextrin, and trehalose has antibacterial properties and enhances the preservability of foods to be packaged. It has the function of improving the taste by adjusting the sugar content of the food to be packaged, and it can be said that two α-glucoses are a kind of disaccharide formed by 1,1-glycosidic linkage, and can be mass-produced from starch It is desirable to use those manufactured by Hayashibara Co., Ltd., and any of the three isomers, α, α isomer, α, β isomer and β, β isomer may be used.

    The sticking agent and thickening agent as a fixing agent can ensure food safety even when the food packaging paint of the present invention is in contact with or close to the food to be packaged. It must be made of a material that is capable of securing the packaging paint to the target container body in a more stable manner and that can ensure sufficient safety even if you accidentally eat and drink with food. In addition, for example, as shown in the examples described later, the mucilage can be at least one of alginic acid ester, sodium alginate and potassium alginate, and in particular, by using alginic acid ester, stronger fixing power can be stabilized. The thickener may be any one of konjac flour, psyllium, guar gum, other starches, etc. It may be assumed to made of any of them in combination.

    Water shall have the function of making the food packaging paint of the present invention into an aqueous solution having a concentration suitable for painting and printing, and ensure sufficient quality and hygiene to ensure food safety. First, for example, tap water used for beverages and sanitary management equivalent to it must be performed, or water quality higher than that must be ensured and used as food safe.

    The coating material for food packaging of the present invention can be adhered and fixed to objects having various individual shapes through processes such as printing, painting, and application, and can achieve a desired storage effect for food to be packaged. It is used for film materials, synthetic resin materials, metal materials, non-metal materials, composite materials, electronic parts, automobile-related materials, wood materials, stone materials, building materials, and various other applications such as painting and printing. In addition to being able to make it possible, if all ingredients are restricted to food and sanitation control is thorough, it can be directly printed or painted on food and chemicals. In addition, a mixture of nanoplatinum particles / starch sugar mixed with nanoplatinum particles and starch sugar is mixed with an appropriate amount of water and ethyl alcohol, and a fixing agent of at least one of a thickener and a thickener. It is necessary to add nano-platinum particles and starch sugar sugar of trehalose (registered trademark) and cyclodextrin to nano-platinum particle / starch sugar mixture, and at least one of viscosity agent and thickener. It is possible to mix a suitable amount of the fixing agent, water and ethyl alcohol.

    The nanoplatinum particle concentration in the food packaging coating of the present invention can be 0.1 ppm to 1,000 ppm, and it is intended to obtain more economical and effective antibacterial, deodorant, antioxidant and other actions. In this case, even when diluted with various solutions in the final coating use stage, the content is preferably 0.01 ppm to 250 ppm, preferably 0.25 ppm to 20 ppm.

    The container body of the food packaging container according to the present invention has a function of packaging a part or all of the food to be packaged, and includes packaging paper, a packaging film, a packaging box, a packaging tray, a packaging container, and packaging. It can be various things such as bags, etc., and can be said to be a product obtained by processing or assembling an unprocessed or semi-processed sheet-like packaging material body. More specifically, a resin film, a nonwoven fabric, Heatron (registered trademark), Japanese paper, spunbond (registered trademark), roll Japanese paper, cardboard, paperboard, paper tray, OP / PET tray container, polystyrene foam container, food container, container part, spacer, cushioning material, etc. , Anti-clouds OPP, OPP, single side heat seal type OP, double side heat seal type OP resin film, barrier NY, barrier PET, PET, A , CPP, PP, PE, laminate film, reinforced poly film, etc., or multilayer films, fruit caps (trade name: cushioning material) such as urethane, sponge, etc. It is also possible to use packaging materials other than food, materials that are not frequently used for packaging, or materials that are not used for packaging at all. For example, cloth, wood , Metal, leather, rubber, gel, stone, shell, plant leaf, plant fiber, natural fiber, synthetic fiber, glass fiber, carbon fiber, and any other material body, It can be said that it is a raw or semi-processed material body before completion of the container body, film, sheet, tape, string, ribbon, bag, box, tray, cup, bucket, Tsu door, lid, it is possible to the material body of a variety of other properties.

    The printing machine used in the technical field of manufacturing the food packaging container of the present invention is capable of printing within a suitable range of packaging materials and container bodies that can package a part or all of various foods to be packaged. Specifically, gravure printing machine, offset sheet-fed printing machine, offset rotary printing machine, flexographic printing machine, letterpress printing machine, screen printing machine, seal printing machine, digital printing machine, on-demand printing machine, various printers, etc. It is possible to select and use a printing machine as appropriate according to the purpose, convenience and availability, and to various painting machines and industrial robots with brush painting function, stamp function, spray painting function, etc. It also has the convenience of being able to be replaced.

Foods to be packaged can be referred to as whole fresh foods packaged in food packaging containers, more specifically, vegetables, root vegetables, fruits, grains, and other processed foods. For example, eggplant, tomato, potato, leek, Japanese mustard spinach, spinach, broccoli, morroheiya, asparagus, green soybeans, almost all other vegetables, burdock, potato, long but almost all other root vegetables, cherries, La France, Japanese Pears, bananas, apples, peaches, strawberries, and almost all other fruits, brown rice, white rice, wheat, soybeans, red beans, other grains, meat, seafood, and cut vegetables, cut fruits, salads, prepared dishes, hors d'oeuvres, Lunch boxes, sandwiches, cooked bread, confectionery, and almost all other processed and cooked foods, tea and coffee ingredients, and processed foods Can, furthermore, other than food, organic materials and chemicals that need to retain freshness, and replaced with a variety of articles such as inorganic required to prevent oxidation and deterioration, all of them may be the subject of the package.
In the following, the structure will be described in detail together with an embodiment representative of the present invention shown in the drawings.

The drawings show some typical embodiments embodying the technical idea of the food packaging paint of the present invention and the food packaging container using the same.
It is a block diagram which shows the manufacturing process and raw material structure of a food packaging paint. It is a perspective view which shows the spray painting process of the coating material for food packaging. It is a front view which shows the printing process of the coating material for food packaging. It is a three-plane figure which shows the packaging container for foodstuffs of this invention. It is a perspective view which shows the food packaging container of this invention. It is the front view and top view which show the other example of the packaging container for foodstuffs.

    In the example shown in FIG. 1, a nanoplatinum particle / starch sugar mixture P obtained by mixing nanoplatinum particles 2 and starch sugar 3 of at least one of trehalose (registered trademark) and cyclodextrin is mixed with a thickener 40 and a thickening agent. A representative example of the food packaging paint 1 according to the present invention, in which at least one of the fixing agent 4 of the agent 41, water 5 and ethyl alcohol 7 are mixed together in appropriate amounts, is shown. is there.

    As is clear from FIG. 1, the coating material 1 for food packaging of the present invention is obtained by processing high-purity platinum into ultrafine particles of, for example, 1 to 10 nanometers and peeling off the colloidal film. Nano Platinum Particles / Starch Sugar Mixture, which is a mixture of Nano Platinum Particles 2 (manufactured by Everyware Co., Ltd.) approved as a product and at least one starch sugar 3 of Trehalose (registered trademark) and cyclodextrin at an appropriate ratio It is assumed that the nanoplatinum particle / starch sugar mixture P and water 5 are composed of a weight ratio of 1: 100 to 1: 2 and at least one of alginate, sodium alginate and potassium alginate. It shall consist of mucous 40 and at least one of konjac flour, plantain, guar gum, and other starches. At least one fixing agent 4 of the thickener 41 and the water 5 have a weight ratio of 1: 100 to 1: 2, and ethyl alcohol 7 and the water 5 have a weight of 1: 100 to 1: 2. Ratio, in the case of adding catechin 6, catechin 6 and water 5 are mixed so as to have a weight ratio of 1: 100 to 1: 2, The concentration of the nanoplatinum particles 2 can be set to, for example, 10 ppm to 1,000 ppm.

(Operation / Effect of Example 1)
The food packaging paint 1 of the present invention having the configuration as described above has a container body 80 capable of packaging part or all of the food to be packaged, as shown in FIGS. When the container is accommodated, the sterilized coating film 11 is provided on a part or all of the inner wall 81 of the container body 80 facing the food to be packaged so as to be contactable. It is possible.
Hereinafter, the structure of the food packaging container 8 will be clarified while showing the manufacturing process and the packaging utilization process of the food packaging container 8 of the present invention.

    As shown in FIG. 2, when a part or all of the container body 80 is made of a transparent or translucent hard synthetic resin and contains a food to be packaged (not shown), the food to be packaged can be contacted. The food packaging paint 1 is diluted 100-fold to 1,000-fold with water 5 to a part or all of the inner wall 81 of the container body 80 facing the surface, and the concentration of the nanoplatinum particles 2 is 0.001 ppm to 20 ppm. It is possible to produce a food packaging container 8 that is provided with a sterilized coating film 11 that is preferably spray-coated with a water-soluble coating liquid 10 of 0.25 ppm to 10 ppm and fixed in a continuous film shape.

    Further, as shown in FIGS. 3 to 5, a packaging film 84 which is a material of a bag-shaped food packaging container 8 container body 80 made of a soft synthetic resin film partially or entirely transparent is used as a food to be packaged. The food packaging paint 1 is diluted 100-fold to 1,000-fold with water 5 to a part or all of the surface that becomes the inner wall 81 of the container body 80 that faces the contact, and the concentration of the nanoplatinum particles 2 A water-soluble paint liquid 10 having a concentration of 0.001 ppm to 20 ppm, preferably 0.25 ppm to 10 ppm, is printed by a gravure printing machine 9 so as to form a sterilized coating film 11 fixed in a broken-line intermittent film shape. Then, the packaging film 84 is supplied to a three-side seal automatic bag making machine (not shown), and as shown in FIGS. In addition, the bag is formed so as to be arranged in a plurality of broken lines, and the sterilized coating film 11 can be provided only in a range indicated by broken line stripes on the back inner side wall 83 of the side view in FIG. In addition to the back inner wall 83, the front inner wall 82 in the side view in FIG. 4 can be provided with the same sterilized coating film 11 in a range indicated by a thin dashed line. Three-sided seal bag 8 as a food packaging container 8 with a handle hole at the bottom and in a suitable position on the top, or three-way as a food packaging container 8 with a chuck seal 85 in a suitable position near the top as shown in FIG. The seal bag 8 can be manufactured.

    When the concentration of the nanoplatinum particles 2 of the water-based coating liquid 10 is set to 0.5 ppm, for example, excessive use of the nanoplatinum particles 2 is suppressed, and the food packaging paint 1 of the present invention is more economical. In addition to being able to produce, it is possible to obtain a wide range of effects such as deodorization, sterilization, antibacterial activity, and antioxidant activity that are remarkably superior.

    Various effects such as improving the preservation performance of foods to be packaged and improving the taste of foods, which are expected to be obtained by using nanoplatinum particles 2 in food packaging containers 8, are currently undergoing intensive studies. Can show only the test results for evaluating the influence of the pure water mist containing platinum nanoparticles on the living body.

    Under the following conditions, pure water nanomist containing platinum nanoparticles is aspirated to ddy mice, blood is collected under ether deep anesthesia, and plasma creatinine concentration, which is an indicator of kidney function, is an indicator of liver function. Measures plasma ALT activity, evaluates acute toxicity to kidney and liver, and after euthanasia by exsanguination under ether deep anesthesia, removes lung and prepares tissue specimen for pathology of acute toxicity to lung The results shown in Tables 1 and 2 were obtained.

Test conditions / measuring environment Room temperature 25.5 ° C Humidity 43% (initial container environment)
・ Mist generating device Nano mist generating device containing platinum nanoparticles ・ Operating time 30, 60 days: Continuous operation ・ Mist generation amount 0.5ml / hour Mist unit x triple type = 1.5ml / hour
・ Platinum nanoparticles concentration 100μg / m ・ (100ppm)
・ Platinum solvent Ultrapure water ・ Platinum nanoparticle diameter 1-50nm
Test equipment / acrylic container 500 × 500 × 500mm
・ Mist generator Nano mist generator ・ Nanoparticle water with platinum nanoparticle concentration adjusted to 100 μg / m

Test procedure Connect a nano mist generator filled with pure water containing platinum nanoparticles into an acrylic container so that platinum nano particle water is supplied as nano mist, and bring the mouse into the acrylic container. In addition, the nanomist generator was continuously operated so as to release the nanomist of platinum nanoparticle water into the acrylic container.

The plasma creatinine concentration is measured using a creatinine test wako (Wako).
-Plasma ALT activity was measured using Transaminase Test Wako (Wako).

    As shown in Table 1, there is no significant difference between the untreated group and the platinum nanoparticle nanomist group, and it is considered that there is no acute toxicity to the kidney. Also, as shown in Table 2, the untreated group Since there was no significant difference between the group and platinum nanoparticle nanomist group, it was concluded that there was no acute toxicity to the liver.

    Furthermore, as a result of verifying acute lung toxicity by histopathological examination of lung tissue specimens, both untreated mice and platinum nanoparticle nanomist mice have no abnormalities in bronchi, bronchioles, alveoli, blood vessels, etc. There appears to be no acute toxicity to lung tissue.

As shown in Tables 3 and 4, when the results of the analysis of the amount of platinum in the organ by ICP-MS (Inductively Coupled Plasma Mass Spectrometer) were observed, trace amounts of platinum particles were detected in the lungs of some mice.
According to these test results, aspiration of platinum nanoparticles by mist showed no acute toxicity in the lungs, kidneys, or liver, and changes in the body weight of mice during the test period were also observed in the untreated group and platinum nanoparticles. There was no significant difference between the two groups in the mist group, and in the pharmacokinetic study by inhalation of platinum nanoparticle mist, a trace amount of nano-level platinum was detected in the lung, but results showing acute toxicity to the lung were required. Therefore, it is considered that there is no problem with safety to the living body. In addition, accumulation in the lung and chronic toxicity cannot be judged unless the study is continued for a longer period of time, but it is a nanoplatinum particle that has been approved as a food additive and does not readily ionize. Since it is chemically stable, the adverse effects on the living body are considered to be extremely low.

(Conclusion)
As described above, the food packaging paint of the present invention and the food packaging container using the same can achieve the intended purpose uniformly by the novel configuration, and can be easily manufactured. Compared to other packaging technologies, it has significantly improved anti-fungal, anti-bacterial, deodorant and anti-oxidation performances, and can maintain and maintain freshness of fresh foods, etc. It is possible and much more economical, so freshness while being displayed in stores, as well as agricultural producers, food distribution and food sales industries that value freshness and quality control. Even if consumers who could not taste fresh food if they did not consume it for a short time after purchase, they could achieve outstanding long-term storage and improved appearance and taste. High Ability are highly valued, use over a wide range, it is expected to be those that continue to spread.

1 Food packaging paint
10 Same paint liquid
11 Sterilized coating film P Nanoplatinum particle / starch sugar mixture 2 Nanoplatinum particle 3 Starch sugar 4 Fixing agent
40 Same mucilage
41 Same thickener 5 Water 6 Catechin 7 Ethyl alcohol 8 Food packaging container
80 Same container body
81 Inside wall
82 Front inner wall
83 Same side wall
84 Packaging film
85 Chuck seal 9 Gravure printing machine

Claims (10)

    A mixture of nanoplatinum particles and starch sugar, which is a mixture of nanoplatinum particles and starch sugar, and a mixture of at least one of a thickener and a thickener, water and ethyl alcohol, each in an appropriate amount. A food packaging paint characterized by that.     To a nanoplatinum particle / starch sugar mixture obtained by mixing nanoplatinum particles and at least one starch sugar of trehalose (registered trademark) and cyclodextrin; and a fixing agent of at least one of a thickener and a thickener; A food packaging paint comprising a mixture of water and ethyl alcohol in appropriate amounts.     The nanoplatinum particle / starch sugar mixture in which the nanoplatinum particles and starch sugar are mixed in an appropriate ratio to the nanoplatinum particle / starch sugar mixture and water in a weight ratio of 1: 100 to 1: 2, and a viscosity agent And at least one fixing agent of the thickener and the water are in a weight ratio of 1: 100 to 1: 2, ethyl alcohol and the water are in a weight ratio of 1: 100 to 1: 2, The food packaging paint according to any one of claims 1 and 2, wherein, in the case of an additive, catechin and the water are mixed so as to have a weight ratio of 1: 100 to 1: 2.     The coating material for food packaging according to any one of claims 1 to 3, wherein the sticking agent as a fixing agent comprises at least one of alginic acid ester, sodium alginate and potassium alginate.     The coating material for food packaging according to any one of claims 1 to 4, wherein the thickening agent as a fixing agent comprises at least one of konjac powder, psyllium, guar gum, and other starches.     A container body that can wrap a part or all of the food to be packaged, and when the food to be packaged is contained, a part or all of the inner wall of the container body facing the food to be packaged so as to be contactable, 6. A food packaging container comprising a sterilized coating film in which a coating liquid containing the coating material for food packaging according to claim 1 as a main component is fixed in a film shape.     When a part or all of the food to be packaged can be packaged and has a container body made of a transparent or translucent hard material, the food to be packaged A sterilized paint film in which a water-soluble paint liquid containing the food packaging paint according to any one of claims 1 to 5 as a main component is fixed on a part or all of the inner wall of the container body facing the container. A food packaging container characterized by being provided.     When a part or all of the food to be packaged can be packaged and has a container body made of a transparent synthetic resin film that is partly or entirely transparent, A sterilized coating in which a water-soluble coating liquid containing the food packaging coating material according to any one of claims 1 to 5 as a main component is fixed in a film form on a part or all of the inner wall of the container body facing the target food so as to be in contact with the target food A food packaging container characterized by comprising a film.     A container body that can wrap a part or all of the food to be packaged, and when the food to be packaged is contained, a part or all of the inner wall of the container body facing the food to be packaged so as to be contactable, The coating material for food packaging according to any one of claims 1 to 5 is provided with a sterilized coating film in which a water-soluble coating liquid diluted with water 100 times to 1,000 times is fixed in a continuous film shape. Characteristic food packaging container. A container body that can wrap a part or all of the food to be packaged, and when the food to be packaged is contained, a part or all of the inner wall of the container body facing the food to be packaged so as to be contactable, 6. The food packaging paint according to any one of claims 1 to 5, further comprising a sterilized paint film in which an aqueous paint solution diluted 100 to 1,000 times with water is fixed in an intermittent film form. Characteristic food packaging container.

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