WO2015114959A1 - 鮮度保持剤、その製造方法、気体浄化装置、及び気体浄化システム - Google Patents
鮮度保持剤、その製造方法、気体浄化装置、及び気体浄化システム Download PDFInfo
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- WO2015114959A1 WO2015114959A1 PCT/JP2014/082742 JP2014082742W WO2015114959A1 WO 2015114959 A1 WO2015114959 A1 WO 2015114959A1 JP 2014082742 W JP2014082742 W JP 2014082742W WO 2015114959 A1 WO2015114959 A1 WO 2015114959A1
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- WIPO (PCT)
- Prior art keywords
- titanium oxide
- freshness
- gas purification
- aqueous solution
- gas
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G5/00—Floral handling
- A01G5/06—Devices for preserving flowers
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N3/00—Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves or protection against physical influences such as UV radiation using chemical compositions; Grafting wax
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N3/00—Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves or protection against physical influences such as UV radiation using chemical compositions; Grafting wax
- A01N3/02—Keeping cut flowers fresh chemically
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- A—HUMAN NECESSITIES
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- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- A—HUMAN NECESSITIES
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- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B7/152—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O ; Elimination of such other gases
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3409—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23L3/3445—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O
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- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
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Definitions
- the present invention mainly relates to a freshness-preserving agent that retains the freshness of fruits and vegetables, a method for producing the same, a gas purification device, and a gas purification system, and in particular, a freshness-preserving agent using bamboo charcoal, a method for producing the same, a gas purification device, and The present invention relates to a gas purification system.
- Freshness is the most important factor for commercial value of fruits and vegetables.
- fruits and vegetables and florets have the property of being easily damaged by rot gas that induces rot such as ethylene gas, ammonia gas, and acetaldehyde released from itself. Therefore, as time elapses, ripening, softening, or discoloration progresses, resulting in a decrease in freshness, and a problem that the commercial value is rapidly reduced.
- a surfactant ionic
- Conventionally known methods include use as a fungicide and suppression of ethylene gas generation using silver thiosulfate.
- these methods are difficult for general users to handle due to the fact that the concentration of the drug used is difficult to manage, contains heavy metals, and is very expensive. Yes.
- a freshness-preserving agent gas purifying agent
- gas purifying agent gas purifying agent
- a material using a carbon-based material such as bamboo charcoal or charcoal, which is a familiar material derived from a natural product and excellent in gas adsorption, has been proposed.
- a styrene / acrylic copolymer binder obtained by hydrosol method adjusted to a glass transition temperature of 65 to 75 ° C. and kneaded with charcoal powder is the minimum film-forming agent. Maintaining the freshness of vegetables with easy disaggregation, moisturizing, waterproofing and septic gas adsorption by coating on the side of the stored paper of the easy disaggregating, moisturizing, and waterproofing paper dried at a temperature (MFT) or higher There is paper (see Patent Document 1).
- a wet type gel-like deodorant has been proposed.
- a gel-like deodorant formed by dispersing a carbon-based adsorbent such as activated carbon, charcoal, or bamboo charcoal, or a silica-based adsorbent in a gel (see Patent Document 2).
- a gel-like antibacterial deodorant obtained by dispersing an adsorbent selected from powdered activated carbon, Bincho charcoal, bamboo charcoal, and charcoal and a plant antibacterial component in the gel (see Patent Document 3).
- the conventional freshness-keeping agent has practical problems from the following points.
- MFT minimum film-forming temperature
- the wet-type gel-like deodorant described in Patent Document 2 or Patent Document 3 is intended to mainly promote the adsorption of water-soluble gas by utilizing the wet state of the gel.
- adsorption using a wet state of the gel is difficult particularly for a gas that is hardly soluble in water (for example, ethylene gas).
- the present invention has been made to solve the above problems, and purifies the gas regardless of the water solubility of the gas to be purified (target gas), and also has antibacterial properties, and is easier to manufacture. It is an object of the present invention to provide a freshness-preserving agent, a production method thereof, a gas purification device composed of the freshness-retaining agent, and a gas purification system.
- the freshness-preserving agent disclosed in the present application is obtained by adhering tea catechins to the surface and / or inside of charcoal powder and adhering between the charcoal powder with clays interposed between the charcoal powders.
- the freshness-preserving agent disclosed in the present application is formed by adhering tea catechin and clay to the surface of the charcoal powder, the adsorption ability of charcoal powder and the antibacterial ability of tea catechin are combined through the clay.
- a synergistic effect is obtained, and in addition to excellent gas adsorbability and antibacterial properties, an antifungal effect and a humidity control effect can be exhibited.
- the freshness-preserving agent disclosed in the present application is such that the charcoal powder is selected from one or more of bamboo charcoal, charcoal, or activated carbon, as necessary.
- the freshness-preserving agent disclosed in the present application provides the desired gas adsorbability by suppressing the manufacturing cost because the charcoal powder is an easily obtainable material with excellent adsorbability. Therefore, high gas adsorption and antibacterial properties can be exhibited at low cost.
- the freshness-preserving agent disclosed in the present application is selected from one or more of bentonite, montmorillonite, hectorite, laponite, silica, starch, gelatin, guar gum, gum arabic, methylcellulose, or ethylcellulose as necessary. It is what is done.
- the freshness-preserving agent disclosed in the present application is a material in which the clays are highly viscous and easily available, so that the production cost is suppressed and the charcoal powder and the tea catechin are strongly bonded to the viscosity. It becomes fixed, and can exhibit high gas adsorption and antibacterial properties at low cost.
- the freshness-keeping agent disclosed in the present application attaches a silver compound to the surface and / or the inside of the charcoal powder as necessary.
- the adsorption of gas adsorption and the antibacterial property against bacteria are simultaneously improved by the silver compound acting on the gas (target gas). As a result, higher freshness maintaining performance can be obtained.
- the gas purification apparatus using the freshness-keeping agent disclosed in the present application includes a gas processing unit that performs an adsorption treatment of a gas component contained in the target gas using the freshness-keeping agent.
- a gas processing unit that performs an adsorption treatment of a gas component contained in the target gas using the freshness-keeping agent since the gas processing unit that performs the adsorption processing of the gas component contained in the target gas using the freshness-keeping agent is provided, the gas component contained in the target gas is adsorbed by the freshness-keeping agent. In addition, the antibacterial effect is exerted on the target gas.
- the gas purification apparatus disclosed in the present application includes a titanium oxide treatment unit having a coating surface coated with titanium oxide and a light source unit that irradiates light to the titanium oxide treatment unit, as necessary.
- a titanium oxide treatment unit having a coating surface coated with titanium oxide and a light source unit that irradiates light to the titanium oxide treatment unit, as necessary.
- the titanium oxide treatment part coated with titanium oxide and the light source part for irradiating the titanium treatment part with light are provided, the oxidation contained in the droplets is accompanied by the light irradiation by the light source part.
- the titanium component acts as a photocatalyst
- the target gas has a direct and additional sterilization effect, and the sterilization, sterilization, sterilization, and adsorption processes are superimposed inside the gas purification device 1. It is possible to maintain a state in which the gas is efficiently cleaned for a long time.
- the light source unit is disposed so as to face the coating surface of the titanium oxide processing unit, and the titanium oxide processing unit is disposed on the gas processing unit as necessary. It is arranged at the upper part or the lower part.
- the light source unit is disposed to face the coating surface of the titanium oxide processing unit, and the titanium oxide processing unit is disposed on the upper or lower portion of the gas processing unit.
- the photocatalytic action is exhibited on the coating surface of the titanium oxide treatment part, and the target gas passing through the titanium oxide treatment part can be efficiently sterilized, sterilized, and decomposed.
- the gas purification device disclosed in the present application is provided between the gas processing unit and the light source unit as necessary, and includes a light shielding unit that shields light.
- a light shielding unit that shields light.
- a gas purification system including a gas purification device disclosed in the present application disperses a titanium oxide aqueous solution supply unit that supplies a titanium oxide aqueous solution, and a droplet of the titanium oxide aqueous solution supplied by the titanium oxide aqueous solution supply unit.
- a titanium oxide aqueous solution diffusing unit, and the target gas passes through the titanium oxide aqueous solution diffusing unit and is supplied to the gas purification device.
- the titanium oxide aqueous solution supply unit that supplies the titanium oxide aqueous solution
- the titanium oxide aqueous solution diffusion unit that diffuses the droplets of the titanium oxide aqueous solution supplied by the titanium oxide aqueous solution supply unit, the target gas, Since the target gas mixed with the liquid droplets containing titanium oxide is supplied to the gas purification device, the titanium oxide aqueous solution passes through the titanium oxide aqueous solution diffusion portion and is supplied to the gas purification device.
- the high-humidity target gas from which the liquid droplets were diffused is antibacterial, sterilized, and sterilized by titanium oxide, and adsorption by the freshness-preserving agent in the gas purification device is performed in a superimposed manner. Thus, it is possible to maintain the freshness for a longer time.
- titanium oxide in the target gas is photoactivated by light irradiation from the light source unit, and the target gas is photoactivated.
- the titanium oxide treatment part After passing through the titanium oxide treatment part, it passes through the freshness-keeping agent, and the action of decomposition, adsorption, antibacterial, sterilization, and disinfection by the freshness-keeping agent is superimposed on the target gas. Demonstrated and can maintain freshness for a longer time.
- the titanium oxide aqueous solution radiating unit generates and radiates droplets having a size containing at least a titanium oxide aqueous solution component by ultrasonic vibration. is there.
- the titanium oxide aqueous solution radiating portion since the titanium oxide aqueous solution radiating portion generates and radiates droplets having a size containing at least a titanium oxide aqueous solution component by ultrasonic vibration, simple ultrasonic vaporization does not allow for vaporization.
- Droplets of a size containing at least a titanium oxide aqueous solution component that cannot be obtained are easily and reliably generated, and the target gas is antibacterial, sterilized, decomposed, and disinfected with titanium oxide. The effect can be exhibited reliably.
- the titanium oxide aqueous solution diffusing unit generates and diffuses droplets having a size containing at least a titanium oxide aqueous solution component by flash evaporation using a decompression chamber, if necessary.
- the titanium oxide aqueous solution diffusion portion generates and dissipates droplets having a size containing at least a titanium oxide aqueous solution component by flash evaporation using a decompression chamber. Eliminates the need for a power source and ensures the antibacterial, sterilizing, decomposing, and disinfecting effects of titanium oxide on the target gas easily and reliably even under conditions where it is difficult to supply power. Demonstrate and perform gas cleaning.
- the titanium oxide aqueous solution diffusing unit contains at least a titanium oxide aqueous solution component by a net body immersed in the titanium oxide aqueous solution of the titanium oxide aqueous solution supply unit, as necessary. A droplet having a size is generated and diffused. In this way, the titanium oxide aqueous solution diffusing portion generates and diffuses droplets having a size containing at least a titanium oxide aqueous solution component by the network immersed in the titanium oxide aqueous solution of the titanium oxide aqueous solution supply unit.
- the titanium oxide aqueous solution is sucked onto the mesh body, and the target gas passes through the mesh body, so that the titanium oxide aqueous solution is included in the target gas, and it is difficult to supply power.
- the target gas can be easily and surely exerted antibacterial, sterilizing, decomposing, and disinfecting actions with titanium oxide to perform gas cleaning. Can do.
- the gas purification system disclosed in the present application includes a power acquisition unit that extracts power from a magnetic field generated in an externally generated current as necessary, and the power extracted by the power acquisition unit is the light source unit and / Or supplied to the titanium oxide aqueous solution diffusion part.
- the power acquisition unit that extracts power from the magnetic field generated in the externally generated current is provided, and the power extracted by the power acquisition unit is supplied to the light source unit and / or the titanium oxide aqueous solution diffusion unit. Therefore, power is supplied using an external power source, and the gas purification process can be continued stably even under a situation where the power source cannot be directly used in the gas purification system.
- the method for producing a freshness-preserving agent disclosed in the present application uses a gelling agent for the mixed solution obtained by mixing tea catechin, charcoal powder, and clay to obtain a mixed solution, and the mixed solution obtained by the mixing step.
- the mixing step is a mixture obtained by mixing tea catechin, charcoal powder, and clay to obtain a mixed solution
- the gelation step is obtained by the mixing step.
- a gel-like body is obtained using a gelling agent for the liquid and the drying step dries the gel-like body, a high specific surface area is obtained by drying the gel-like body, and a high gas A freshness-preserving agent having adsorptive and antibacterial properties can be obtained.
- the mixing step obtains the mixed solution by mixing tea catechin, charcoal powder, and clay with a binder aqueous solution composed of a water-soluble polymer. And the said gelatinization process dripped the liquid mixture obtained by the said mixing process to potassium or calcium containing aqueous solution, and obtains the said gel-like body.
- the method for producing a freshness-preserving agent disclosed in the present application is obtained by mixing tea catechin, charcoal powder, and clay with a binder aqueous solution composed of a water-soluble polymer in a mixing step to obtain a mixed solution, and gelling.
- the process drops the mixed solution into an aqueous solution containing potassium or calcium to obtain a gel-like body, and the drying step dries the gel-like body, the gel-like body is formed by a simple operation of dripping.
- a freshness-preserving agent having high gas adsorption and antibacterial properties at a lower cost.
- the charcoal powder is selected from one or more of bamboo charcoal, charcoal, or activated carbon as necessary.
- the method for producing a freshness-preserving agent disclosed in the present application is that the carbon powder is an easily obtainable material with excellent adsorption ability, so that the production cost is suppressed and desired gas adsorption is achieved. Therefore, a freshness-preserving agent having high gas adsorption and antibacterial properties can be obtained at low cost.
- the clay is one of bentonite, montmorillonite, hectorite, laponite, silica, starch, gelatin, guar gum, gum arabic, methylcellulose, or ethylcellulose. A plurality are selected.
- the clays are materials that have high viscosity and are easily available, the production cost is suppressed and the charcoal powder and Tea catechins are fixed, and a freshness-preserving agent having high gas adsorption and antibacterial properties can be obtained at low cost.
- the water-soluble polymer is any one of sodium alginate, potassium alginate, or ammonium alginate, and the aqueous solution containing potassium or calcium is chlorinated.
- the aqueous solution containing potassium or calcium is chlorinated.
- the drying in the drying step is performed by baking at 80 ° C. to 100 ° C. as necessary.
- the freshness-preserving agent disclosed in the present application is that the drying in the drying step is by baking at 80 ° C. to 100 ° C., so that drying of the gel state is promoted without decomposition of tea catechins, Tea catechins effectively adhere to the charcoal powder, and a freshness-preserving agent having high gas adsorption and antibacterial properties can be obtained.
- the block diagram of the gas purification system which concerns on the 9th Embodiment of this invention, and explanatory drawing about the structure of a titanium oxide diffusion part are shown.
- the block diagram of the gas purification system which concerns on the 10th Embodiment of this invention, and explanatory drawing about the structure of a titanium oxide diffusion part are shown.
- the explanatory view and block diagram about the structure of the titanium oxide diffusion part of the gas purification system which concerns on other embodiment of this invention are shown.
- SEM scanning electron microscope
- the spectrum figure obtained by the energy dispersive X-ray spectroscopy (EDX) of the freshness keeping agent which concerns on embodiment of this invention is shown.
- the adsorption test result of the freshness-keeping agent according to the embodiment of the present invention is shown.
- the freshness-keeping agent according to the first embodiment is formed by adhering tea catechins to the surface and / or inside of charcoal powder, and adhering between the charcoal powder by interposing clay between the charcoal powders. is there.
- the tea catechin is not particularly limited as long as it is catechin extracted from tea leaves.
- tea catechin extracted from commercially available Japanese tea can be used.
- No. 3 tea and tea pruned branches which are waste materials (tea residue), and in this case, effective utilization of resources and reduction of manufacturing costs can be achieved.
- the charcoal powder can be selected from one or more of bamboo charcoal, charcoal, or activated carbon, for example, but it is preferable to use bamboo charcoal from the viewpoint of easy handling and availability.
- bamboo charcoal can be used as it is, but it can also be obtained by firing (for example, 600 ° C. to 800 ° C.) a commercially available bamboo or a stand bamboo forest. In that case, effective use and production of resources Cost can be reduced.
- the size of the charcoal powder is not particularly limited, but for example, a micrometer order can be used.
- the clay can be selected from one or more of bentonite, montmorillonite, hectorite, laponite, silica, starch, gelatin, guar gum, gum arabic, methylcellulose, or ethylcellulose. Although it is particularly preferred to use, other preferred clays include starch or silica.
- FIG. 1 shows the flowchart regarding the manufacturing method of the freshness-keeping agent which concerns on the 1st Embodiment of this invention.
- tea catechin, charcoal powder, and clay are mixed with a binder aqueous solution made of a water-soluble polymer to obtain a mixed solution.
- any one of sodium alginate, potassium alginate, or ammonium alginate can be selected, but sodium alginate is preferably used because of its availability.
- tea catechin 2 is mixed with a binder aqueous solution 3 (jelly-like) made of a water-soluble polymer to prepare a jelly-like liquid catechin, and charcoal powder 100 is mixed therewith.
- the powder 100 and the tea catechin 200 form a state of being attached while being covered with this jelly form (S0: catechin attaching step).
- S0 catechin attaching step
- FIG.1 (b) after this S0, the liquid mixture 5 obtained by further mixing the clays 4 is accommodated in the container A (S1: mixing process).
- the mixed solution 5 obtained in the mixing step S1 is dropped onto the potassium or calcium-containing aqueous solution 6 to obtain a gel-like body 7 (gel molded body) (S2: gelation step).
- this potassium or calcium-containing aqueous solution 6 for example, potassium chloride or calcium chloride can be used.
- this dropping is performed by dropping the mixed solution 5 into the burette B and dropping or dropping the mixed solution 5 from the tip of the nozzle C of the burette B onto the container D containing the aqueous solution 6 containing potassium or calcium. This can be done by extruding. By this dripping, the droplet 510 of the mixed liquid 500 containing the charcoal powder 100 and the tea catechin 200 is surface-treated, and a gel-like body 700 (gel-molded body) shaped into particles can be obtained.
- This dripping is preferably carried out while stirring the potassium- or calcium-containing aqueous solution 600 in the container D in order to promote the dispersion of the gel-like body 700 (gel molded body).
- the shape of the obtained gel-like body 700 has a correlation with the concentration and viscosity of the aqueous solution. That is, when the viscosity of this aqueous solution is relatively low, molding becomes easy, and when the concentration of this aqueous solution is relatively high, the desired gel shape is controlled by utilizing the tendency of the gel shape to become smaller. Is possible.
- the gel-like body 7 obtained by the gelation step S2 is dried (S3: drying step).
- the drying in the drying step S3 may be natural drying at room temperature or sun drying, but it is preferable to use baking at 80 ° C. to 100 ° C.
- the molecules of the tea catechin 200 can be significantly attached to the charcoal powder 100 without being decomposed.
- the firing temperature is lower than 80 ° C.
- the tea catechin 200 is easily eluted to the outside of the charcoal powder 100, and is difficult to adhere to the charcoal powder 100.
- the baking temperature is higher than 100 ° C., the molecules of the tea catechin 200 are easily pyrolyzed.
- the freshness-keeping agent according to the present embodiment is formed by the aqueous binder solution 300 in the mixing step S1 while the carbon powders 100 are firmly bonded by the clays 400 as shown in FIG.
- the jelly-like liquid phase is removed (the outer film of the liquid phase of the binder aqueous solution 300 shrinks and breaks upon drying), and the charcoal powder 1 is exposed and exposed to the outside (surface).
- the area where the powder 100 is in contact with the outside air is increased, and a higher gas adsorption ability can be achieved.
- the water-soluble polymer for example, alginate
- the freshness-keeping agent can exhibit more excellent adsorption characteristics due to an increase in viscosity and specific surface area (sometimes referred to as porosity in the present application) caused by the water-soluble polymer.
- the freshness-preserving agent according to this embodiment obtained in this way is not only excellent adsorptive, but also has moisture-absorbing properties that vary with time (particularly derived from charcoal powder), Staphylococcus aureus, It exhibits antibacterial properties against bacteria such as Klebsiella pneumoniae and antifungal properties that suppress mold growth (see Examples described later).
- the raw material carbon powder and tea catechin are obtained from woody biomass such as left bamboo forest and tea residue, there are significant advantages from the viewpoint of effective use of resources and cost control.
- the raw materials used to obtain the freshness-keeping agent of the present invention for example, bamboo charcoal, tea catechin as charcoal powder 100, bentonite as clay 400, and water-soluble polymer constituting binder aqueous solution 300
- the sodium alginate and potassium or calcium-containing aqueous solution 600 include, but are not limited to, calcium chloride.
- a silver compound to the surface and / or the inside of the charcoal powder.
- a mixed solution was obtained by mixing tea catechin, charcoal powder, and clay with a binder aqueous solution composed of a water-soluble polymer.
- a silver compound (Ag + ) is formed in this liquid mixture by additionally mixing a silver compound with a liquid, and others are obtained by the procedure similar to the above-mentioned manufacturing method.
- the obtained freshness-keeping agent contains silver ions by attaching silver compounds to the surface and / or inside of the charcoal powder, the silver ions derived from the silver compounds are included in the target gas. By acting, the adsorptivity of gas adsorption to the target gas and the antibacterial property against bacteria are simultaneously enhanced, and a higher freshness maintaining performance can be obtained.
- a dispersant may be used as a raw material for the freshness-preserving agent according to the present embodiment together with the above raw materials.
- a dispersing agent can be used in order to promote this dispersion state as needed, when the dispersion state of the carbon powder and clay which are raw materials is not favorable.
- examples of such a dispersant include commercially available purified bentonite (for example, BEN-GEL manufactured by Hojun Co., Ltd.) mainly composed of clays montmorillonite. The amount is preferably 1 to 2% by weight based on the total weight of the raw material carbon powder and clays.
- polysaccharides can be added to the freshness-keeping agent and used to supply an energy source for cut flowers.
- the purified vinegar can be used by adding it to a freshness-keeping agent.
- the freshness-preserving agent according to the second embodiment can be obtained by changing the method for forming the gel-like body 700 in the gelation step S2 of the first embodiment.
- a binder aqueous solution made of a water-soluble polymer and a potassium or calcium-containing aqueous solution 600 were used. It is also possible to obtain the gel-like body 700 (gel molded body) using an agent.
- a gelling agent include agar, agarose, gum arabic, pullulan, starch, gelatin, pectin, glucomannan, galactomannan, xanthan gum, dextrin, carrageenan, gellan gum, tamarind seed gum, ethyl cellulose, propylene glycol and the like. Can be mentioned.
- the gel-like body 700 (gel molded body) can be obtained, and a freshness-keeping agent equivalent to that of the first embodiment can be obtained.
- a silver compound can be attached to the surface and / or the inside of the charcoal powder. Since the silver compound adheres to the surface and / or the inside of the charcoal powder, the adsorption of gas adsorption and the antibacterial property against bacteria are simultaneously enhanced by the action of the silver compound on the gas, and the performance of maintaining a higher freshness. Is obtained.
- an aqueous solution of silver oxide or silver chloride can be used, but besides this, various aqueous solutions containing commercially available silver ions can be used.
- the gas purification apparatus 1 includes a gas processing unit 11 that performs adsorption processing of a gas component contained in the target gas using the freshness-keeping agent described above.
- the gas processing unit 11 is configured using a storage container that stores a plurality of the freshness-keeping agents in a bundle. By simply passing the target gas through the storage container, the gas component of the flowing target gas is adsorbed by the action of the freshness maintaining agent, and the target gas can be purified.
- the gas purification apparatus in addition to the gas processing unit 11 described in the fourth embodiment, has a titanium oxide treatment having a coating surface coated with titanium oxide, as shown in FIG. Unit 12, a light source unit 13 that irradiates light to the titanium oxide processing unit, and a power source unit 14 that supplies power to the light source unit 13.
- the titanium oxide treatment part 12 preferably has a vent hole with air permeability. Moreover, as a material of the titanium oxide process part 12, metals, such as stainless steel, and ceramics can be used. As the light source unit 13, various light bulbs serving as light sources can be used, but it is preferable to use an LED from the viewpoint of power saving, and it is particularly preferable to use an ultraviolet LED from the intensity of irradiation energy.
- the power source unit 14 is not particularly limited as long as it is a power source that supplies power to the light source unit 13.
- the battery may be used as it is, but it is more preferable to incorporate a control circuit for controlling ON / OFF of the battery over time, and by incorporating this control circuit, the battery is always on. Power saving is achieved, and the power is maintained for a long time, so that the gas cleaning process can be performed for a long time.
- the positional relationship among the gas processing unit 11, the titanium oxide processing unit 12, and the light source unit 13 is not particularly limited.
- the light source unit 13 includes a titanium oxide processing unit.
- the titanium oxide treatment unit 12 may be disposed on the upper portion of the gas treatment unit 11.
- the light source unit 13 is disposed to face the coating surface of the titanium oxide processing unit 12, and the titanium oxide processing unit 12 is disposed on the gas processing unit 11.
- the gas purification apparatus which concerns on this embodiment WHEREIN:
- the light source part 13 is arrange
- the gas processing unit 11 may be disposed below the gas processing unit 11.
- the target gas first passes through the titanium oxide processing unit 12 to be sterilized, decomposed, and sterilized.
- the gas processing unit 11 adsorbs the gas component contained in the target gas by the action of the freshness maintaining agent. As a result, the target gas is subjected to a superimposing cleaning process, and the gas cleaning state can be efficiently maintained for a long time.
- the gas purification apparatus which concerns on this embodiment is arrange
- the light shielding unit 15 can be configured using a gallery composed of multiple folds.
- the light shielding unit 15 By disposing the light shielding unit 15, unnecessary light irradiation from the light source unit 13 to the gas processing unit 11 is blocked, so that the freshness maintaining agent constituting the gas processing unit 11 is deteriorated. As a result, the gas freshening performance can be maintained for a longer period of time by extending the lifetime of the freshness-keeping agent.
- the gas purification apparatus described in the fifth embodiment has a compact box shape as shown in FIG.
- the gas purification apparatus according to the present embodiment includes the gas processing unit 11 including a storage container that stores a plurality of bundles 11a of the freshness-keeping agent, and a plurality of vent holes 12a.
- the titanium oxide treatment portion 12 having a coating surface coated with titanium oxide on the top surface, and fitted into a case of the titanium oxide treatment portion 12, has a plurality of vent holes 13 a, and is formed from an ultraviolet LED on the back surface.
- positioned is comprised.
- the storage container constituting the gas processing unit 11 includes a passage hole through which gas passes on the bottom surface and / or the side surface.
- the gas purification apparatus is formed as an integrated box as shown in FIG. 3B, and the light source unit 13 is configured by allowing the target gas to pass therethrough.
- the gas component of the target gas is combined with the bactericidal property due to ultraviolet rays emitted from the ultraviolet LED, the antibacterial property and decomposability due to the titanium oxide activated as a photocatalyst, and the adsorptivity due to the action of the freshness-preserving agent. Will be purified in a superimposed manner, and the target gas can be efficiently purified over a long period of time.
- it since it is formed as an integrated box, it is easy to carry and can be used as a compact handy type gas purification device.
- the gas purification apparatus which concerns on each embodiment mentioned above can also be comprised only from the said gas processing part 11.
- FIG. 1 since the power supply unit 14 for supplying power is not necessary, it is configured to be lighter and more compact, and it is easy to carry and can be easily cleaned even in a narrow space. it can.
- the gas purification device according to the present embodiment is blown from the bottom by the fan 16, so that the target gas around the gas purification device rides on a stable airflow and is added to the gas purification device.
- the gas component of the target gas is purified without stagnation, and the target gas can be purified efficiently and stably over a long period of time. Since the gas purifying apparatus according to the present embodiment is portable, even if the air flow of the target gas tends to stagnate, it is only placed at a desired location by the air flow generated by the fan 16. Gas purification can be performed smoothly.
- the titanium oxide treatment section 12 in the gas purification apparatus described in the seventh embodiment is configured not to use a titanium oxide coating.
- the gas purification apparatus according to the eighth embodiment is the same as the gas purification apparatus described in the fifth or sixth embodiment.
- a processing unit 12, the light source unit 13, the power source unit 14, and the light shielding unit 15 are provided, and the titanium oxide processing unit 12 is fitted between the vent hole 12a and the vent hole 13a.
- spherical titanium oxide balls 12b made of titanium oxide are provided.
- the light source unit 13 irradiates the titanium oxide balls 12 b from the lower part of the titanium oxide processing unit 12.
- the titanium oxide ball 12b is not particularly limited as long as it is a sphere containing titanium oxide, but is preferably composed of a porous body.
- the surface area is increased, so that the adsorptivity can be improved and the titanium oxide can be easily supported, thereby enhancing the action of the photocatalyst.
- An example of such a porous body is silica gel. Since silica gel has high light transmittance, the irradiated light can be received efficiently, and the photocatalytic action by the supported titanium oxide can be enhanced.
- the titanium oxide balls 12b are made of silica gel, the titanium oxide balls 12b are formed by supporting titanium oxide over the surface and inside of the silica gel by impregnating a silica gel sphere with a titanium oxide solution and drying.
- the outer surface of the sphere of silica gel but also the inside is significantly impregnated with titanium oxide, so that the titanium oxide ball 12b is irradiated with light from the light source unit 13 and the outside thereof.
- the photocatalytic action is exhibited over a wide area on the surface and inside, and a high sterilization effect is exerted on the target gas, and the state where the gas is efficiently cleaned can be maintained for a long time.
- the gas purification device has a higher sterilization effect on the target gas.
- the state in which the gas is efficiently cleaned can be maintained for a long time.
- the target gas passing through the three-dimensional spherical titanium oxide ball 12b is three-dimensionally contacted with each other, so that the surface of the titanium oxide when the plane is coated is two.
- the contact area of the target gas is dramatically increased, the decomposition rate of the target gas is increased, and gas cleaning can be performed more efficiently.
- the titanium oxide ball 12b is fixed by fitting a part of the vent holes 12a and the vent holes 13a.
- the titanium oxide balls 12b are preferably arranged at equal intervals. With such a configuration, the airflow is smoothly conducted in some of the vent holes 12a and the vent holes 13a to which the titanium oxide balls 12b are not fitted, and this oxidation can be performed without blocking the airflow. Gas cleaning can be performed more efficiently by the photocatalytic action of the titanium balls 12b.
- this titanium oxide ball 12b is fixed by fitting and can be freely attached / detached, it is possible to easily replace old and new titanium oxide than when performing titanium oxide coating. Cost can be suppressed.
- the number of the titanium oxide balls 12b can be freely changed according to the degree of the gas environment (the width and the degree of contamination) of the space in which the gas purification apparatus according to the present embodiment is placed, the titanium oxide balls 12b As a result, it is possible to perform gas cleaning according to the mounting space so that the number of slabs does not become excessive, and an excellent cost-effectiveness can be realized.
- the titanium oxide balls 12b have fine protrusions that do not contain titanium oxide on the outer surface thereof.
- this protrusion it is preferable to use various ceramics and apatite since they themselves have adsorptivity.
- the titanium oxide balls 12b are provided with the protrusions, the titanium oxide balls 12b are fitted into the air holes 12a and 13a through the protrusions. Therefore, the air holes 12a and the air holes 13a are not in contact with the titanium oxide component. It will be fitted in a contact state, and the deterioration by the photocatalytic action with respect to the said titanium oxide process part 12 and the upper cover part 13b can be prevented.
- the light source unit 13 can irradiate the titanium oxide balls 12b inside the titanium oxide processing unit 12 as shown in FIG. In this case, since light is irradiated in the vicinity of the titanium oxide balls 12b, the photocatalytic action is further enhanced, and gas cleaning can be performed more efficiently.
- the gas purification apparatuses according to the first to eighth embodiments described above have a wide range of applications and are not limited to the size of the space to be subjected to gas purification.
- this gas purification device is capable of efficiently performing a gas purification process, particularly when the space to be subjected to gas purification is sufficiently large, and an air flow is forcibly generated by an external fan. It is preferable to be placed in the middle.
- the above-described gas purification device 1 can be placed inside a reefer container to which a blower unit 3 composed of a fan 3a is attached.
- the reefer container is a container used for transporting fresh foods and medicines that need to be frozen and refrigerated, art works and films that deteriorate at high temperatures.
- the gas purifying apparatus can realize freshness maintenance, anti-corruption, and prevention of deterioration over a long period of time for these stored articles by being placed in the container.
- the gas purification system according to the ninth embodiment has a configuration in which a liquid droplet diffusing unit 2 for radiating liquid droplets to a target gas is provided upstream of the gas purification device 1.
- the gas purification system includes the gas processing unit 11 described in the fourth embodiment, the titanium oxide processing unit 12, The gas purification device 1 including the light source unit 13, the power supply unit 14, and the light shielding unit 15, a titanium oxide aqueous solution supply unit 21 that supplies a titanium oxide aqueous solution, and the titanium oxide aqueous solution supply unit 21.
- a titanium oxide aqueous solution diffusing unit 20 for diffusing droplets of the titanium oxide aqueous solution supplied by an ultrasonic vibration unit 20a that generates ultrasonic vibration and a power supply unit 22 that supplies power to the ultrasonic vibration unit 20a are configured.
- the droplet diffusion unit 2 is provided, and the target gas is supplied to the gas purification device 1 after passing through the titanium oxide aqueous solution diffusion unit 20.
- the titanium oxide aqueous solution supply unit 21 supplies the titanium oxide aqueous solution to the titanium oxide aqueous solution diffusing unit 20 and includes a container that stores the titanium oxide aqueous solution.
- the titanium oxide aqueous solution diffusion unit 20 is not particularly limited as long as it can disperse droplets of the titanium oxide aqueous solution.
- an ultrasonic wave that generates ultrasonic vibrations is used.
- the vibration unit 20a and a power supply unit 22 that supplies power to the ultrasonic vibration unit 20a are provided.
- the particle diameter of the droplets of the aqueous titanium oxide solution is preferably from the nanometer order to the micrometer order, and more preferably from 0.3 nm to 0.5 ⁇ m, from the viewpoint of efficiently containing it in the target gas.
- the particle diameter of the titanium oxide aqueous solution droplet is smaller than 0.3 nm, it is difficult to form the droplet (the droplet is difficult to be diffused), and when larger than 0.5 ⁇ m, the droplet is small in size. Becomes difficult to pass through various types of filters such as non-woven fabrics, and tends to form dew and easily generate mold.
- the droplets easily enter the voids of the porous body of the titanium oxide balls 12b because the droplets have a particle size of 0.3 nm to 0.5 ⁇ m. It becomes size.
- the floating droplets are efficiently taken into the titanium oxide balls 12b by moving to the gas purification device 1, so that the photocatalytic action of the titanium oxide balls 12b is further increased.
- An even higher sterilization effect is exerted on the target gas, and the state in which the gas is efficiently cleaned can be maintained for a long time.
- ultrasonic vibration part 20a for example, a magnet stirrer or a vibration stirrer can be used.
- ultrasonic vibration generates droplets that cannot be obtained by simple vaporization using a conventional blower type or steam type, that is, droplets having a size containing at least a titanium oxide aqueous solution component.
- the liquid droplets contain a titanium oxide aqueous solution component that is difficult to contain by conventional simple vaporization, and when mixed with the target gas, the sterilization action derived from titanium oxide is exerted on the target gas. That is, the gas cleaning effect on the target gas can be enhanced.
- the target gas mixed with the droplets containing titanium oxide is supplied to the gas purification device 1, so that the titanium oxide component contained in the droplets is accompanied by the light irradiation by the light source unit 13.
- the target gas is directly and additionally sterilized, and the sterilization, sterilization, sterilization, and adsorption processes are performed in the gas purification device 1 in a superimposed manner. Highly efficient gas cleaning can be realized for a long time.
- the power source unit 22 that supplies power to the titanium oxide aqueous solution diffusing unit 20 is not limited as long as it is a normal power source.
- a power acquisition unit 23 that extracts power from the power As the power acquisition unit 23, a coil can be used. With such a configuration, in particular, even in the case of a container where there is a restriction that the outlet port cannot be arranged inside the gas purification system according to the present embodiment, the power extracted by the power acquisition unit 23 is stably It will be supplied to the titanium oxide aqueous solution diffusion part 20, and a gas cleaning can be implemented continuously over a long time.
- the power extracted by the power acquisition unit 23 can be directly supplied to the light source unit 13 to function as the power supply unit 14. That is, a separate power supply unit as the power supply unit 14 is not required, and the power supply unit 14 can be configured from one power supply unit. In this case, for example, when the power extracted by the power acquisition unit 23 varies with time, the light irradiation of the light source unit 13 also varies with time in conjunction with the variation. In the gas purification apparatus 1, dynamic gas cleaning can be performed.
- the gas purification system according to the tenth embodiment is similar to the gas purification system according to the eighth embodiment described above, and the gas processing unit 11 and the titanium oxide processing unit 12.
- the gas purification device 1 including the light source unit 13, the power source unit 14, and the light shielding unit 15, and the reduced pressure chamber 20b that generates flash evaporation as the titanium oxide aqueous solution diffusion unit 20,
- the liquid droplet diffusing unit 2 includes the titanium oxide aqueous solution supply unit 21.
- the titanium oxide aqueous solution diffusion unit 20 generates and diffuses droplets having a size containing at least a titanium oxide aqueous solution component by flash evaporation using the decompression chamber 20b. As described above, the titanium oxide aqueous solution diffusing unit 20 generates droplets having a size containing at least a titanium oxide aqueous solution component by flash evaporation using the decompression chamber 20b, and moves toward the direction A in FIG. 6B. Since it diffuses, a power source for driving the titanium oxide aqueous solution diffusing unit 20 becomes unnecessary, and easily and reliably with respect to the target gas even under conditions where it is difficult to supply power. The antibacterial, sterilizing, decomposing, and sterilizing effects of titanium oxide can be reliably exhibited and gas cleaning can be performed.
- the titanium oxide aqueous solution diffusing unit 20 includes the titanium oxide aqueous solution supplying unit. 21 can be configured to generate and dissipate droplets having a size containing at least a titanium oxide aqueous solution component by the network immersed in the titanium oxide aqueous solution 21.
- the titanium oxide aqueous solution is sucked up on the mesh body by capillarity, and the target gas passes through the mesh body, so that the titanium oxide aqueous solution is included in the target gas, and the supply of power can be performed.
- the target gas can be easily and reliably exerted antibacterial, sterilizing, decomposing, and disinfecting effects with titanium oxide, thereby purifying the gas. It can be carried out.
- the said gas process part 11, the said titanium oxide process part 12, and the said light source are similar to 10th Embodiment.
- Part 13 the power supply part 14, the light shielding part 15, the gas purification device 1 including the fan 16, the titanium oxide aqueous solution diffusion part 20, and the titanium oxide aqueous solution supply part 21.
- the titanium oxide aqueous solution diffusing unit 20 generates droplets having a size containing at least a titanium oxide aqueous solution component by using a net body immersed in the titanium oxide aqueous solution of the titanium oxide aqueous solution supply unit 21.
- Example 1 A freshness-keeping agent was prepared using bamboo charcoal, tea catechin, bentonite, sodium alginate, and calcium chloride as raw materials. As tea catechin raw materials, tea leaves having the composition shown in Table 1 below were used. (Dry tea leaf test results)
- samples 1 to 5 having different tea leaf concentrations with respect to water were obtained, and the content of each catechin was confirmed.
- Samples 1 to 5 are tea leaves 5 g, 10 g, 2.5 g, 5 g and 7.5 g mixed with 500 cc of water.
- the extraction time was 15 minutes (boiling).
- samples 1 and 2 were further extracted for 15 minutes after the extraction for 15 minutes.
- Table 2 The results are shown in Table 2 below. From the obtained results, it was confirmed that a stable amount of tea catechin was extracted after 15 minutes extraction (boiling) and further extraction for 15 minutes (samples 1 and 2).
- bamboo charcoal was obtained by firing commercially available bamboo at 600 ° C to 800 ° C.
- bentonite (Hojun Co., Hotaka (main component: SiO 2 68.6%, Al 2 O 3 16.3%, Fe 2 O 3, 3.88%, CaO 1.5% MgO 1.72%)
- sodium alginate manufactured by Kimika
- calcium chloride manufactured by Shiraimatsu Shinyaku Co., Ltd.
- a scanning electron microscope (SEM) image of the obtained freshness-preserving agent was obtained using a SEM apparatus (JSM-7500F, manufactured by JEOL Ltd.). This SEM image is shown in FIG.
- the magnification of the SEM image in FIG. 8 is 25 times for (a), 170 times for (b), 3000 times for (c), and 5000 times for (d). From this result, it was confirmed that the obtained freshness-keeping agent had fine tea catechins dispersed and adhered to the surface of bamboo charcoal.
- the obtained freshness-keeping agent was subjected to elemental analysis by energy dispersive X-ray spectroscopy (EDX) using an EDX apparatus (Oxford INCA Energy type E2H manufactured by Oxford Instruments).
- EDX energy dispersive X-ray spectroscopy
- Tables 3 and 4 the corresponding spectrum diagrams are shown in FIGS. 9 (a) and 9 (b), respectively.
- Example 2 Using the freshness-keeping agent obtained in Example 1 above, adsorption ability to ammonia gas and acetaldehyde was confirmed.
- Example 3 Using the freshness-keeping agent obtained in Example 1 above, the adsorption ability for ammonia gas and acetaldehyde was confirmed together with a comparative example. As comparative examples, no adsorbent (blank) and only bamboo charcoal were used.
- FIGS. 10 (a) and 10 (b) The adsorption test results for ammonia gas and acetaldehyde are shown in FIGS. 10 (a) and 10 (b), respectively. From the results shown in FIG. 6, with respect to ammonia adsorption, the ammonia concentration almost disappeared in the freshness-keeping agent after 15 minutes. In contrast, in the case of only the bamboo charcoal as a comparative example, ammonia having a concentration of 2.0 ppm was detected even after 15 minutes had elapsed. Moreover, about acetaldehyde adsorption
- Example 4 Using the freshness-keeping agent obtained in Example 1 above, the effect of keeping freshness against florets was confirmed. Commercially available carnations and tulips were used as the florets.
Abstract
Description
以下、第1の実施形態に係る鮮度保持剤を説明する。第1の実施形態に係る鮮度保持剤は、炭粉末の表面及び/又は内部に茶カテキンを付着させると共に、前記炭粉末間に粘土類を介在させて前記炭粉末間を付着して成るものである。
第2の実施形態に係る鮮度保持剤として、第1の実施形態のゲル化工程S2におけるゲル状体700の形成方法を変更して得ることも可能である。
第3の実施形態に係る鮮度保持剤として、第1又は第2の実施形態において、前記炭粉末の表面及び/又は内部に銀化合物を付着させることができる。前記炭粉末の表面及び/又は内部に銀化合物を付着させることから、銀化合物がガスに作用することによりガス吸着の吸着性及び細菌に対する抗菌性が同時に高められることとなり、さらに高い鮮度保持の性能が得られる。この銀化合物の原料としては、酸化銀又は塩化銀の水溶液を使うことができるが、これ以外にも、市販の銀イオンを含む各種水溶液を使うことができる。
第4の実施形態では、第1~3のいずれかの実施形態における鮮度保持剤を用いて構成される気体浄化装置が示される。
本実施形態に係る気体浄化装置は、上記第4の実施形態で記載した気体処理部11に加えて、図2(a)に示すように、酸化チタンでコーティングされたコーティング面を有する酸化チタン処理部12と、前記酸化チタン処理部に光を照射する光源部13と、この光源部13に電力を供給する電源部14を備えて構成される。
第6の実施形態では、上記第5の実施形態に記載された気体浄化装置において、図3に示すように、コンパクトな箱型とするものである。本実施形態に係る気体浄化装置は、図3(a)に示すように、複数の上記鮮度保持剤の束体11aを収納した収納容器からなる前記気体処理部11と、複数の通気孔12aを有し、上面に酸化チタンでコーティングされたコーティング面を有する前記酸化チタン処理部12と、この酸化チタン処理部12のケースに嵌合し、複数の通気孔13aを有し、裏面に紫外線LEDから構成される前記光源部13が配設される上蓋部13bとから構成される。
第7の実施形態では、上記第6の実施形態に記載された気体浄化装置において、図4(a)に示すように、前記気体処理部11と、前記酸化チタン処理部12と、前記光源部13と、前記電源部14と、前記光遮蔽部15を備え、さらに、底部に、この電源部14から電力が供給されて送風を行うファン16を備えて構成される。すなわち、コンパクトな箱型の気体浄化装置の底部にファン16を配設するものである。
第8の実施形態では、上記第7の実施形態に記載された気体浄化装置における前記酸化チタン処理部12を、酸化チタンのコーティングを用いない構成とするものである。
このような多孔質体としては、例えば、シリカゲルを挙げることができる。シリカゲルは、高い光透過性を有することから、照射される光を効率よく受光できることとなり、担持する酸化チタンによる光触媒作用を高めることができる。この酸化チタンボール12bは、シリカゲルから構成される場合には、シリカゲルの球体に酸化チタン溶液を含浸して乾燥することにより、シリカゲルの表面及び内部にわたって酸化チタンを担持して形成される。
第9の実施形態に係る気体浄化システムは、前記気体浄化装置1の前段に、対象気体に液滴を放散する液滴放散部2を備える構成である。
第10の実施形態に係る気体浄化システムは、図6(a)に示すように、上述した第8の実施形態に係る気体浄化システムと同じく、前記気体処理部11と、前記酸化チタン処理部12と、前記光源部13と、前記電源部14と、前記光遮蔽部15とから構成される前記気体浄化装置1と、前記酸化チタン水溶液放散部20として、フラッシュ蒸発を発生させる減圧チャンバー20bと、前記酸化チタン水溶液供給部21とから構成される前記液滴放散部2を備える構成である。
その他の実施形態に係る気体浄化システムとしては、上記の酸化チタン水溶液放散部20の変形例として、図7(a)に示すように、前記酸化チタン水溶液放散部20が、前記酸化チタン水溶液供給部21の酸化チタン水溶液に浸漬された網体により、少なくとも酸化チタン水溶液成分を含有する大きさの液滴を生成して放散する構成とすることができる。この構成によって、毛細管現象によって、この網体上に酸化チタン水溶液が吸い上げられ、この網体を対象気体が通過することによって、酸化チタン水溶液が対象気体中に含ませられることとなり、電源の供給が困難な条件下であっても、より簡素な構成によって、容易且つ確実に、前記対象気体に対して、酸化チタンによる抗菌、滅菌、分解、及び除菌の作用を確実に発揮し、気体清浄を行うことができる。
竹炭、茶カテキン、ベントナイト、アルギン酸ナトリウム、及び塩化カルシウムを原料に用いて、鮮度保持剤を調製した。茶カテキンの原料としては、下記の表1に示す組成の茶葉を用いた。
(乾燥茶葉試験結果)
アルギン酸ナトリウム3gを水200(ml)に入れてミキサーで溶かし、茶カテキンを混合して全体で300gとした水溶液を得た。このアルギン酸ナトリウム水溶液に、竹炭16gとベントナイト1.6gを混合して混合液Aを得た。塩化カルシウム17gを水800mlに入れて溶かして容器のまま一番下に放置した。この混合液Aをビュレットのノズル先端より溶液を滴下してゲル成形体を得た。この際、スターラーを使用してゲル成形体を分散するように混ぜながら滴下した。ゲル成形体を容器から出して洗浄水で流れ洗い乾燥させた。その後、100℃で炉乾燥して鮮度保持剤を得た。
上記実施例1で得られた鮮度保持剤を用いて、アンモニアガス及びアセトアルデヒドに対する吸着能を確認した。
試験方法:上記実施例1で得られた鮮度保持剤(1~3)及び比較品(4~6)のサンプルをシャーレに入れ、5Lガスバックに入れた。このガスバックに3リットルの空気を入れて、アンモニアガスを30ppmになるように注入した。(アセドアルデヒドの場合についても同様に3リットルの空気を入れ、アセドアルデヒドを30ppmになるように注入した)。アンモニア注入直後の濃度(初期n濃度)と15分、30分、45分、60分、360分後の濃度を検知管を用いて測定し、下記の(I)式を用いて吸着率D(%)を算出した。(同様にアセドアルデヒド注入直後の濃度(初期n濃度)と15分、30分、45分、60分、360分後の濃度を検知管を用いて測定し、下記の(I)式を用いて吸着率D(%)を算出した。)その結果を表1に示す。
上記実施例1で得られた鮮度保持剤を用いて、アンモニアガス及びアセトアルデヒドに対する吸着能を、比較例と共に確認した。比較例としては、吸着剤無し(ブランク)の場合、及び竹炭のみの場合とした。
上記の実施例2と同様の手順で、アンモニアについては、アンモニア検知管3L(ガステック製)を12本使用して測定した(アセトアルデヒドについては、アセドアルデヒド検知管3L(ガステック製)を27本使用)。竹炭のみの比較例では竹炭15gを使用し、本鮮度保持剤は15gを使用した(アセトアルデヒドについては、竹炭のみの比較例では竹炭10gを使用し、本鮮度保持剤は9gを使用)。このガスバックに3リットルの空気を入れて、アンモニアガスを15ppmになるように注入し、吸引時間を45秒とした。(アセドアルデヒドの場合についても同様に3リットルの空気を入れ、アセドアルデヒドを30ppmになるように注入し、吸引時間を2分とした)。
上記実施例1で得られた鮮度保持剤を用いて、花卉に対する鮮度保持の効果を確認した。花卉としては、市販のカーネーション及びチューリップを用いた。
試験方法:市販カーネーション、チューリップを各々6本ずつ用意した。それぞれ透明の花瓶(A及びBは実施例1で得た鮮度保持剤、C及びDは比較品、E及びFは水のみ)に入れた。花瓶をこのままの状態として、室内温度20~25℃を設定し、湿度50%~70%の条件で2週間実験した。花色、縮れ、カビ発生の変化の結果について、下記表1に示す。実施例1で得た鮮度保持剤(A及びB)では、14日経過後にも色、縮れ、カビに対して全く変化が無かった。これに対して、比較品の鮮度保持剤(C及びD)では、既に3日を経過した時点で、特に色及び縮れの点で鮮度の劣化が見受けられ、7日の時点では鮮度の劣化が明らかとなった。また、水のみ(E及びF)の場合にも、比較品の鮮度保持剤(C及びD)と同様の劣化傾向が見受けられたが、特に10日経過後には、商品価値を失うまで鮮度が劣化した。この結果から、実施例1で得た鮮度保持剤は、従来にはない優れた鮮度保持の効能を発揮できることが確認された。
11 気体処理部
12 酸化チタン処理部
12a 通気孔
12b 酸化チタンボール
13 光源部
13a 通気孔
13b 上蓋部
14 電池部
15 光遮蔽部
16 ファン
2 液滴放散部
20 酸化チタン水溶液放散部
20a 超音波振動部
20b 減圧チャンバー
21 酸化チタン水溶液供給部
22 電源部
23 電力取得部
3 送風部
3a ファン
100 炭粉末
200 茶カテキン
300 バインダー水溶液
400 粘土類
500 混合液
510 液滴
600 カリウム又はカルシウム含有水溶液
700 ゲル状体
A 容器
B ビュレット
C ノズル
D 容器
Claims (19)
- 炭粉末の表面及び/又は内部に茶カテキンを付着させると共に、前記炭粉末間に粘土類を介在させて前記炭粉末間を付着して成ることを特徴とする
鮮度保持剤。 - 請求項1に記載の鮮度保持剤において、
前記炭粉末が、竹炭、木炭、又は活性炭のうち1又は複数から選択されることを特徴とする
鮮度保持剤。 - 請求項1又は請求項2に記載の鮮度保持剤において、
前記粘土類が、ベントナイト、モンモリロナイト、ヘクトライト、ラポナイト、シリカ、デンプン、ゼラチン、グアーガム、アラビアガム、メチルセルロース、又はエチルセルロースのうち1又は複数から選択されることを特徴とする
鮮度保持剤。 - 請求項1~3のいずれかの請求項に記載の鮮度保持剤において、
前記炭粉末の表面及び/又は内部に銀化合物を付着させることを特徴とする
鮮度保持剤。 - 請求項1~4のいずれかの請求項に記載の鮮度保持剤を用いて、対象気体に含有されるガス成分を吸着処理する気体処理部を備えることを特徴とする
気体浄化装置。 - 請求項5に記載の気体浄化装置において、
酸化チタンでコーティングされたコーティング面を有する酸化チタン処理部と、
前記酸化チタン処理部に光を照射する光源部とを備えることを特徴とする
気体浄化装置。 - 請求項6に記載の気体浄化装置において、
前記光源部が、前記酸化チタン処理部の前記コーティング面に対向して配設され、
前記酸化チタン処理部が、前記気体処理部の上部又は下部に配設されることを特徴とする
気体浄化装置。 - 請求項7に記載の気体浄化装置において、
前記気体処理部と前記光源部の間に配設され、光を遮蔽する光遮蔽部を備えることを特徴とする
気体浄化装置。 - 請求項5~8のいずれかの請求項に記載の気体浄化装置から構成される気体浄化システムにおいて、
酸化チタン水溶液を供給する酸化チタン水溶液供給部と、
前記酸化チタン水溶液供給部により供給された酸化チタン水溶液の液滴を放散させる酸化チタン水溶液放散部とを備え、
前記対象気体が、前記酸化チタン水溶液放散部を通過し、前記気体浄化装置に供給されることを特徴とする
気体浄化システム。 - 請求項9に記載の気体浄化システムにおいて、
前記酸化チタン水溶液放散部が、超音波振動により、少なくとも酸化チタン水溶液成分を含有する大きさの液滴を生成して放散することを特徴とする
気体浄化システム。 - 請求項9に記載の気体浄化システムにおいて、
前記酸化チタン水溶液放散部が、減圧チャンバーを用いるフラッシュ蒸発により、少なくとも酸化チタン水溶液成分を含有する大きさの液滴を生成して放散することを特徴とする
気体浄化システム。 - 請求項9に記載の気体浄化システムにおいて、
前記酸化チタン水溶液放散部が、前記酸化チタン水溶液供給部の酸化チタン水溶液に浸漬された網体により、少なくとも酸化チタン水溶液成分を含有する大きさの液滴を生成して放散することを特徴とする
気体浄化システム。 - 請求項9~12に記載の気体浄化システムにおいて、
外部で発生する電流に生じる磁界から、電力を取り出す電力取得部を備え、
前記電力取得部により取り出された電力が、前記光源部及び/又は前記酸化チタン水溶液放散部に供給されることを特徴とする
気体浄化システム。 - 茶カテキン、炭粉末、及び粘土類を混合して混合液を得る混合工程と、
前記混合工程により得られた混合液に対してゲル化剤を用いてゲル状体を得るゲル化工程と、
前記ゲル化工程により得られたゲル状体を乾燥させる乾燥工程を含むことを特徴とする
鮮度保持剤の製造方法。 - 請求項14に記載の鮮度保持剤の製造方法において、
前記混合工程が、水溶性高分子から成るバインダー水溶液に、茶カテキン、炭粉末、及び粘土類を混合して前記混合液を得て、
前記ゲル化工程が、前記混合工程により得られた混合液をカリウム又はカルシウム含有水溶液に滴下して前記ゲル状体を得ることを特徴とする
鮮度保持剤の製造方法。 - 請求項14又は15に記載の鮮度保持剤の製造方法において、
前記炭粉末が、竹炭、木炭、又は活性炭のうち1又は複数から選択されることを特徴とする鮮度保持剤の製造方法。 - 請求項14~16のいずれかに記載の鮮度保持剤の製造方法において、
前記粘土類が、ベントナイト、モンモリロナイト、ヘクトライト、ラポナイト、シリカ、デンプン、ゼラチン、グアーガム、アラビアガム、メチルセルロース、又はエチルセルロースのうち1又は複数から選択されることを特徴とする鮮度保持剤の製造方法。 - 請求項14~17のいずれかに記載の鮮度保持剤の製造方法において、
前記水溶性高分子が、アルギン酸ナトリウム、アルギン酸カリウム、又はアルギン酸アンモニウムのいずれか1つであり、
前記カリウム又はカルシウム含有水溶液が、塩化カリウム、又は塩化カルシウムのいずれか1つであることを特徴とする
鮮度保持剤の製造方法。 - 請求項14~18のいずれかに記載の鮮度保持剤の製造方法において、
前記乾燥工程の乾燥が、80℃~100℃の焼成によることを特徴とする
鮮度保持剤の製造方法。
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CN108854518B (zh) * | 2018-06-22 | 2021-01-26 | 中国科学院生态环境研究中心 | 一种光催化氧化氨气的方法 |
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