KR20200006806A - Multifunctional sheet for maintaining freshness of food, and preparing method of the same - Google Patents

Abstract

The present invention relates to a multifunctional sheet for maintaining freshness of various foods including agricultural products such as fruits and vegetables, and a preparing method thereof. According to the present invention, the multifunctional sheet comprises: a base material; and a porous material particle layer coated on one surface or both surfaces of the base material.

Description

MULTIFUNCTIONAL SHEET FOR MAINTAINING FRESHNESS OF FOOD, AND PREPARING METHOD OF THE SAME

The present application relates to a multifunctional sheet for maintaining freshness of various foods including agricultural products such as fruits and vegetables, and a manufacturing method thereof.

At present, as the lifestyle changes, the amount of food packaging materials used for distribution, storage and exhibition sales of food is increasing.

In addition, as consumers' interest in the environment increases and a feeling of rejection of harmful chemicals such as environmental hormones occurs, interest in not only the production management of food but also the stability and rationality of packaging for storage and distribution is increasing.

Among foods, agricultural products such as vegetables and fruits continue to breathe even after being harvested. Through this respiration, agricultural products wither or dry, and ethylene, aldehyde or alcohol occurs during storage or distribution. Since the gas causes the ripening of vegetables or fruits, the quality gradually changes due to the softening caused by the natural ripening and decays due to the action of microorganisms.

In this regard, although functional corrugated cardboard is used as one of the packaging for maintaining the freshness of food, such functional corrugated sheet is easily lost in functionality by the adhesive because the adhesive is used to coat the functional material, It is difficult to control the degree of, there is a problem that the manufacturing cost of the cardboard is too large.

In addition, when packaging the fruit and the like, a synthetic plastic film such as polypropylene or polyethylene is mostly used. They are generally known to increase fruit freshness in containers by permeating oxygen and blocking moisture, but have a disadvantage in that they cannot cope with the overgrowth caused by the generation of ethylene gas, a plant overgrowth hormone.

[Preceding technical literature]

International Patent Publication No. 2007-147744.

The present application is to provide a multi-functional sheet for maintaining the freshness of various foods, including agricultural products, such as fruits, vegetables, and a method of manufacturing the same.

However, the problem to be solved by the present application is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description.

A first aspect of the present application, the substrate; And it provides a multi-functional sheet for maintaining the freshness of food, comprising a layer of porous material particles coated on one or both sides of the substrate.

A second aspect of the present application provides a roll of multifunctional sheet for maintaining the freshness of food according to the first aspect of the present application.

A third aspect of the present application provides a method of making a multifunctional sheet for maintaining the freshness of a food product according to the first aspect of the present application, comprising coating and then drying a porous material particle-containing solution on a substrate.

According to the embodiments of the present disclosure, by coating the porous material particles including the zeolite crystal particles on one or both sides of the substrate, a multifunctional sheet capable of maintaining the freshness of the food may be prepared.

1 is a photograph after about 12 hours of the banana and the control banana using the multifunctional sheet in one embodiment of the present application.
2 is a photograph after about 5 days of the banana and the control banana using the multifunctional sheet in one embodiment of the present application.
3 is a photograph after about 5 days of the banana and the control banana using the multifunctional sheet in one embodiment of the present application.
4 is a photograph after about 5 days of the banana and the control banana using the multifunctional sheet in one embodiment of the present application.
5 is a photograph after about 5 days of the banana and the control banana using the multifunctional sheet in one embodiment of the present application.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present disclosure. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout this specification, when a part is said to be "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another element in between. do.

Throughout this specification, when a member is located “on” another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

Throughout this specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding the other components unless otherwise stated. As used throughout this specification, the terms “about”, “substantially”, and the like, are used at, or in close proximity to, numerical values when manufacturing and material tolerances inherent in the meanings indicated are provided, and an understanding of the present application may occur. Accurate or absolute figures are used to assist in the prevention of unfair use by unscrupulous infringers. As used throughout this specification, the term “step of” or “step of” does not mean “step for”.

Throughout this specification, the term “combination (s) thereof” included in the expression of a makushi form refers to one or more mixtures or combinations selected from the group consisting of the components described in the expression of makushi form, It means to include one or more selected from the group consisting of the above components.

Throughout this specification, the description of “A and / or B” means “A or B, or A and B”.

Hereinafter, with reference to the accompanying drawings will be described in detail the embodiments and embodiments of the present application. However, the present disclosure may not be limited to these embodiments, examples, and drawings.

A first aspect of the present application, the substrate; And it provides a multi-functional sheet for maintaining the freshness of food, comprising a layer of porous material particles coated on one or both sides of the substrate.

In one embodiment of the present disclosure, the substrate may be a woven fabric, a nonwoven fabric, a paper, or an aluminum foil, but may not be limited thereto.

In one embodiment of the present application, the substrate may be, but may not be limited to contain fibers, wallpaper, closet products, blinds, curtains, plastics, or polymers.

In one embodiment of the present application, the food may include agricultural products, but may not be limited thereto.

In one embodiment of the present application, the food may include fruits or vegetables, but may not be limited thereto.

In one embodiment of the present disclosure, the porous material particles may be particles of nanometer size to micrometer size level, but may not be limited thereto.

In one embodiment of the present application, the porous material particles may include one or more materials selected from the group consisting of, but may not be limited thereto:

1. zeolite;

2. Zeolite, ZSM-5, Silicalite-1, TS-1 or Metallo-Silicalite-1 with MFI structure;

3. Zeolite, ZSM-11, Silicalite-2, TS-2 or Metallo-Silicalite-2 with MEL structure;

4. Zeolite A, X, Y, L or Beta, Mordenite, Ferrierite, ETS-4 or ETS-10;

5. MCM series, SBA series, MSU series or KIT series mesoporous silica;

6. organic-inorganic composite mesoporous structures or layered materials;

7. Organic zeolite, organometallic zeolite or coordination compound zeolite in which metal ion and ligand are three-dimensionally bound;

8. complexes containing organic dyes, inorganic dyes, organic-inorganic mixed dyes, luminescent dyes or pigments within the pores of a porous material or between layers of a layered material;

9. A porous material selected from the group consisting of Metal Organic Framework (MOF) materials, Covalent Organic Framework (COF), and composites thereof; And

10. Metals, metal oxides, and complexes of metals and metal oxides.

11. Carbonaceous material.

In one embodiment of the present application, the metal may be one selected from the group consisting of Cu, Ag, Au, Pd, Pt, Ni, and combinations thereof, wherein the metal oxide is Ti, Zr, Si And, and may include an oxide of the element selected from the group consisting of, but may not be limited thereto.

In one embodiment of the present application, the carbonaceous material may include activated carbon, but may not be limited thereto.

In one embodiment of the present application, the porous material particles may contain a functional group that can be attached to the surface of the substrate, but may not be limited thereto.

In one embodiment of the present application, the porous material particles may include zeolite crystal particles, but may not be limited thereto.

In one embodiment of the present application, the zeolite crystal particles may be ion-exchanged by metal ions of silver, copper, iron, nickel, cobalt, palladium or platinum, but may not be limited thereto.

In one embodiment of the present application, the porous material particle layer may be one containing no additives, but may not be limited thereto.

In one embodiment of the present application, the substrate may be a woven or nonwoven fabric formed by natural fibers or synthetic fibers, but may not be limited thereto.

In one embodiment of the present application, the sheet may be stored as the food in a sealed container or a sealed space in which the food is stored, but may not be limited thereto.

In one embodiment of the present application, (a) a first linking compound connected to the surface of the substrate, or (b) an intermediate linking to the first linking compound and the first linking compound connected to the surface of the substrate. Pretreated to include a third linking compound as a compound;

The porous particles are used without pretreatment, or (c) comprise a second linking compound connected to the surface of the porous particles, or (d) a second linking compound connected to the surface of the porous particles and linked to the second linking compound. As intermediate linking compound, it is pretreated with the fourth linking compound,

By coating the substrate with the porous particle-containing solution,

The untreated substrate is bonded to the non-precipitated porous particles or the second linking compound connected to the surface of the porous particles,

The first connecting compound connected to the surface of the pretreated substrate is bonded to the unpretreated porous particles or the second connecting compound connected to the surface of the porous particles,

A third linking compound connected to the first linking compound and the first linking compound connected to the surface of the substrate, and a third linking compound linked to the surface of the microparticle, and an intermediate linking linking to the second linking compound As a compound, bound to the fourth linking compound.

The linking compounds each independently include a compound derived from one or two or more organic compounds selected from the group consisting of:

[Formula 1]

Z-L1-X;

[Formula 2]

MR'4;

[Formula 3]

R ₃ Si-L1-Y;

[Formula 4]

HS-L1-X;

[Formula 5]

HS-L1-SiR ₃ ;

[Formula 6]

HS-L1-Y;

[Formula 7]

Z-L2 (+) L3 (−)-Y or Z-L3 (−) L2 (+)-Y;

In the above formula,

Z is R ₃ Si or an isocyanate group (-NCO), where R represents a halogen group, an alkoxy group of C ₁ -C ₄ or an alkyl group of C ₁ -C ₄ and at least one of the three Rs is a halogen group or an alkoxy group ,

L _{1 is a} hydrocarbon moiety such as a substituted or unsubstituted C ₁ -C ₁₇ alkyl, aralkyl or aryl group which may comprise one or more oxygen, nitrogen or sulfur atoms, X being a halogen group, an isocyanate (-NCO) group , A tosyl group or an azide group, R 'is the same as R, at least two of the four R's are halogen or alkoxy groups, M is silicon, titanium or zirconium,

Y is a hydroxy group, thiol group, amine group, ammonium group, sulfone group and salts thereof, carboxylic acid and salts thereof, acid anhydride, epoxy group, aldehyde group, ester group, acrylic group, isocyanate group (-NCO), sugar residues, It is a coordination compound capable of double bond, triple bond, diene, diyne, alkyl phosphine, alkyl acin and ligand exchange, Y may be located at the end of the linking compound as well as in the middle, and L2 ( +) Represents a functional group having at least one positive charge (+) at the terminal, straight or side chain of a substituted or unsubstituted C ₁ -C ₁₇ hydrocarbon compound which may include one or more oxygen, nitrogen or sulfur atoms, and L 3 (-) Means a functional group having at least one negative charge (-) at the terminal, straight or side chain of a substituted or unsubstituted C ₁ -C ₁₇ hydrocarbon compound which may contain one or more oxygen, nitrogen or sulfur atoms. .

A second aspect of the present application provides a roll of multifunctional sheet for maintaining freshness of food according to the first aspect of the present application.

With respect to the roll of the multi-functional sheet for maintaining the freshness of the food according to the second aspect of the present application, detailed descriptions of portions overlapping with the first aspect of the present application have been omitted, but even if the description is omitted, The disclosure is equally applicable to the second aspect of the present application.

A third aspect of the present application provides a method of making a multifunctional sheet for maintaining the freshness of a food product according to the first aspect of the present application, comprising coating and then drying a porous material particle-containing solution on a substrate.

With respect to the manufacturing method of the multi-functional sheet for maintaining the freshness of the food according to the third aspect of the present application, the detailed description of the overlapping parts of the first aspect of the present application is omitted, even if the description is omitted the first aspect of the present application The content described in may apply equally to the third aspect of the present application.

In one embodiment of the present application, the manufacturing method may include coating a porous material particle-containing solution on a substrate and then drying, but may not be limited thereto.

In one embodiment of the present application, the manufacturing method may include, but is not limited to, an additional process of drying the substrate on which the porous material particle coating is completed or after drying, such as foaming and embossing.

In one embodiment of the present application, the porous material particles may further include a plasma treatment to remove impurities remaining on the surface of the substrate coated, but may not be limited thereto. For example, a plasma treatment may be performed to dry the substrate coated with the porous material particles, or to remove impurities remaining on the surface of the substrate on which the additional process such as foaming and embossing is completed after drying, but is not limited thereto. You may not.

In one embodiment of the present application, the plasma treatment may be an oxygen plasma or an Ar plasma, but may not be limited thereto.

In one embodiment of the present application, by uniformly spraying the porous material particle-containing solution to apply translational kinetic energy and vibration energy, the porous material particles can be adhered to the substrate strongly, uniformly and quickly, but the coating It may not be limited.

In one embodiment of the present application, the temperature of the porous material particle-containing solution may be adjusted to about 0 ℃ to about 100 ℃, but may not be limited thereto. For example, the temperature of the porous material particle-containing solution may be from about 0 ° C. to about 100 ° C., from about 0 ° C. to about 80 ° C., from about 0 ° C. to about 60 ° C., from about 0 ° C. to about 40 ° C., from about 0 ° C. About 20 ° C, about 20 ° C to about 100 ° C, about 20 ° C to about 80 ° C, about 20 ° C to about 60 ° C, about 20 ° C to about 40 ° C, about 40 ° C to about 100 ° C, about 40 ° C to about 80 ° C, about 40 ° C to about 60 ° C, about 60 ° C to about 100 ° C, about 60 ° C to about 80 ° C, or about 80 ° C to about 100 ° C, but may not be limited thereto.

In one embodiment of the present application, the porous material particles by an external reservoir for supplying the porous material particle-containing solution into a container containing the porous material particle-containing solution and recovering the used porous material particle-containing solution. -The containing solution may be circulated, but may not be limited thereto.

In one embodiment of the present application, the temperature of the vessel containing the porous material particle-containing solution and the external storage may be adjusted to about 0 ℃ to about 100 ℃, but may not be limited thereto. For example, the temperature of the vessel and the external reservoir is about 0 ° C to about 100 ° C, about 0 ° C to about 80 ° C, about 0 ° C to about 60 ° C, about 0 ° C to about 40 ° C, about 0 ° C to about 20 ° C, about 20 ° C to about 100 ° C, about 20 ° C to about 80 ° C, about 20 ° C to about 60 ° C, about 20 ° C to about 40 ° C, about 40 ° C to about 100 ° C, about 40 ° C to about 80 ° C , About 40 ° C. to about 60 ° C., about 60 ° C. to about 100 ° C., about 60 ° C. to about 80 ° C., or about 80 ° C. to about 100 ° C., but may not be limited thereto.

According to embodiments of the present invention, by uniformly and strongly binding the porous material particles such as zeolite on one or both sides of the substrate, it is possible to maintain the freshness of agricultural products, including food, for example, fruit or vegetables have.

In one embodiment of the present invention, the manufacturing method, the porous material particles in the liquid injection process by bonding a linking compound that does not bind to the porous material particles to a portion of the substrate according to the type of the connecting compounds It can be adjusted so that only a portion of the adhesion coating, but may not be limited thereto.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

EXAMPLE

Preparation of Multifunctional Sheet

For the preparation of the multifunctional sheet, the substrate and porous material particles were first prepared. The prepared substrate was coated with a porous material particle-containing solution. After coating, plasma treatment was performed to remove impurities remaining on the coated substrate surface, thereby preparing a multifunctional sheet.

Maintain food freshness in multifunctional sheets

Using the multifunctional sheet prepared in the above embodiment, the freshness maintaining ability of the food was confirmed. First, a banana, which is a kind of fruit, was prepared as a food. The prepared multifunctional sheet was cut into a size of about 20 cm ⅹ 15 cm, and sealed in a zipper bag with the prepared banana. Along with this, only bananas were put together and sealed as a control without using a multifunctional sheet in another zipper bag.

Figure 1 shows a photograph after 12 hours of the banana and the control banana using the multifunctional sheet. No signs of discoloration were observed in both bananas, but in the case of the control bananas, moisture generated by the respiration and transpiration of the fruit was formed on the surface of the zipper bag.

2 to 5 show a photograph after about 5 days of the banana and the control banana using the multifunctional sheet. In the case of a banana using a multifunctional sheet, it was confirmed that ethylene gas, active oxygen, and water generated by the respiration and transpiration of the fruit were effectively removed through the porous material on the surface of the sheet. That is, fruit overheating and decay can be prevented through this, and the freshness of the fruit can be maintained for a longer period of time. On the other hand, in the case of the control banana not using the multifunctional sheet, moisture generated on the surface of the zipper bag, and due to the generation of ethylene gas, fruit discoloration occurred, and freshness was confirmed to decrease.

The above description of the present application is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present application. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present application is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present application.

Claims (14)

materials; And
Porous material particle layer coated on one or both sides of the substrate
Multifunctional sheet for maintaining the freshness of the food, including.
The method of claim 1,
The substrate is a multi-functional sheet for maintaining the freshness of food, comprising a woven fabric, non-woven, paper, or aluminum foil.
The method of claim 1,
The food is a multi-functional sheet for maintaining the freshness of the food, including agricultural products.
The method of claim 1,
The food is a multi-functional sheet for maintaining the freshness of the food, including fruits or vegetables.
The method of claim 1,
The porous material particles are particles of the nanometer size to micrometer size level, multifunctional sheet for maintaining the freshness of food.
The method of claim 1,
Multi-functional sheet for maintaining the freshness of the food, wherein the porous material particles include one or more materials selected from the group consisting of:
1. zeolite;
2. Zeolite, ZSM-5, Silicalite-1, TS-1 or Metallo-Silicalite-1 with MFI structure;
3. Zeolite, ZSM-11, Silicalite-2, TS-2 or Metallo-Silicalite-2 with MEL structure;
4. Zeolite A, X, Y, L or Beta, Mordenite, Ferrierite, ETS-4 or ETS-10;
5. MCM series, SBA series, MSU series or KIT series mesoporous silica;
6. organic-inorganic composite mesoporous structures or layered materials;
7. Organic zeolite, organometallic zeolite or coordination compound zeolite in which metal ion and ligand are three-dimensionally bound;
8. complexes containing organic dyes, inorganic dyes, organic-inorganic mixed dyes, luminescent dyes or pigments within the pores of a porous material or between layers of a layered material;
9. A porous material selected from the group consisting of Metal Organic Framework (MOF) materials, Covalent Organic Framework (COF), and composites thereof; And
10. Metals, metal oxides, and complexes of metals and metal oxides.
11. Carbonaceous material.
The method of claim 1,
The porous material particles will include zeolite crystal particles, multifunctional sheet for maintaining the freshness of food.
The method of claim 7, wherein
Wherein the zeolite crystal particles are ion-exchanged by metal ions of silver, copper, iron, nickel, cobalt, palladium or platinum, multifunctional sheet for maintaining the freshness of food.
The method of claim 1,
The porous material particle layer does not include an additive, multifunctional sheet for maintaining the freshness of food.
The method of claim 1,
The base material is a woven or non-woven fabric formed by natural fibers or synthetic fibers, multifunctional sheet for maintaining the freshness of food.
The method of claim 1,
The sheet is a multifunctional sheet for maintaining the freshness of the food is to be stored together with the food in a sealed container or a closed space in which the food is stored.
A roll of multifunctional sheet for maintaining the freshness of the food of claim 1.
Coating porous substrate particle-containing solution on substrate and then drying
A method for producing a multifunctional sheet for maintaining the freshness of the food of any one of claims 1 to 11 comprising a.
The method of claim 13,
12. The method of manufacturing a multifunctional sheet for maintaining the freshness of the food of any one of claims 1 to 11, further comprising plasma treatment to remove impurities remaining on the surface of the substrate coated with the porous material particles.

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