JPH10147380A - Food storage sheet and food storage container - Google Patents

Abstract

(57) [Problem] A conventional food preservation sheet or the like has a drawback that an active ingredient is deteriorated and volatilized by heating during sheet production.
Provided are a food preservation sheet and a food preservation container in which this point is improved. An isothiocyanate is provided in each of a plurality of independent sections obtained by laminating a sheet having a gas barrier property and a sheet having a gas permeability and partially bonding or fusing each other. This problem has been solved by carrying an antibacterial agent composed of a compound in which a compound or a terpene compound is included in cyclodextrin, an antioxidant, and an adsorbent in a separated state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food storage sheet and a food storage container used for transporting and storing foods, for example, fresh foods and processed foods.

[0002]

2. Description of the Related Art Conventionally, microorganisms adhering to fresh foods and processed foods multiply in an enormous number in a short time, and often cause food poisoning. Therefore, a method is known in which the propagation of microorganisms is suppressed by imparting antibacterial properties to packaging materials and containers used when transporting and storing fresh foods and processed foods. As a method for imparting antibacterial properties to such packaging materials and containers, for example, Japanese Utility Model Application Laid-Open No. 3-111984 discloses a method in which a compound in which an isothiocyanate ester or a monoterpene compound is included in cyclodextrin is added to a synthetic resin film. An antibacterial packaging film characterized by being dispersed and contained is disclosed.

[0003]

However, in such an antibacterial packaging film, a compound in which an isothiocyanate ester or a monoterpene compound having an antibacterial property is included in cyclodextrin is dispersed in a synthetic resin film. Due to the heating at the time of the heat treatment, there is a problem that the isothiocyanate or the monoterpene compound exhibiting antibacterial properties is altered or the above-mentioned components are volatilized from the cyclodextrin. Furthermore, since most of the antibacterial compounds contained in the antibacterial packaging film are confined in the synthetic resin film, it is difficult to efficiently volatilize the active ingredient having antibacterial properties, which is expensive. The antibacterial compound had to be contained in a large amount. In addition, such an antibacterial packaging film is inefficient because the active ingredient having antibacterial properties volatilizes from both sides without distinction between the front and back sides, which is inefficient. For such a reason, it is necessary to contain a large amount of the antibacterial compound. Was. In addition, deterioration of fresh foods and processed foods due to oxidation cannot be prevented, and in addition, a function of adsorbing microorganisms adhering to fresh foods and processed foods is not provided.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a plurality of independent sheets obtained by laminating a sheet having gas barrier properties and a sheet having air permeability and partially bonding or fusing each other. A food characterized in that an antibacterial agent comprising a compound in which an isothiocyanate compound or a terpene compound is included in cyclodextrin, an antioxidant, and an adsorbent are separately supported on each of the divided compartments. The above-mentioned problems have been solved by a storage sheet and a food storage container molded so that the air-permeable sheet becomes an inner surface.

That is, in the present invention, an antibacterial agent comprising an isothiocyanate compound or a compound in which a terpene compound is included in cyclodextrin is used between a sheet having gas barrier properties and a sheet having air permeability. Since the plurality of independent sections obtained by partially adhering or fusing the sheets to each other are supported and integrated into each of the plurality of independent sections, the above-mentioned active ingredient volatilizes efficiently through the air-permeable sheet. As a result, deterioration due to heating does not occur, and the active ingredient is not trapped in the resin.

In the food storage container of the present invention, the air-permeable sheet is formed so as to form an inner surface, and a sheet having a gas barrier property is provided on the outer side. There is no leakage to the outside, and the effect can be exhibited more efficiently. In addition, an antioxidant can prevent deterioration of fresh foods and processed foods due to oxidation, and an adsorbent can efficiently adsorb microorganisms adhering to fresh foods and processed foods.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In FIG. 1, the food preservation sheet 1 is
A sheet 2 having gas barrier properties and a sheet 3 having air permeability are laminated, and an isothiocyanate is added to each of a plurality of independent sections obtained by partially adhering or fusing between sheets. It is a food preservation sheet in which a compound 6 in which a compound or a terpene compound is included in cyclodextrin, a powder 6, an antioxidant 7, and an adsorbent 8 are supported in a separated state. Also, that A
FIG. 3 is a cross-sectional view taken along the line A-A.

FIG. 4 is a cross-sectional view of an example in which a bag-shaped food storage container is formed. As shown in FIG. 1, a gas permeable sheet 3 is laminated on an outer peripheral portion of a gas barrier sheet 2. An unsealed seal portion 10 is provided. By folding the food storage sheet 1 such that the seal portions 10 are overlapped with each other and heating this portion, heat sealing can be easily performed. In addition, it is also possible to use an adhesive to seal as required.

The sheet having gas barrier properties used in the present invention is a resin having low permeability to gas, mainly oxygen gas, such as polyvinylidene chloride, saponified ethylene-vinyl acetate copolymer resin, and nylon resin. And a resin such as a polyethylene terephthalate resin alone or a mixture of these resins appropriately formed into a sheet. In addition, a sheet-like resin made of the above resin can be appropriately laminated and used.

The air-permeable sheet used in the present invention is preferably paper or non-woven fabric. For example, paper made of cellulose fiber or non-woven fabric made of synthetic fiber such as polyester, acrylonitrile, and polypropylene is preferable. Also, a watting paper or the like which is excellent in moisture absorption as well as air permeability can be preferably used. In the present invention, after laminating the sheet 2 having gas barrier properties and the sheet 3 having air permeability, by partially bonding the sheets to each other, when forming a plurality of sections where the periphery is bonded,
Alternatively, when the food storage sheet 1 is sealed in a bag shape or another shape, an adhesive can be appropriately used as needed. As the adhesive, an ethylene-vinyl acetate copolymer resin, an acrylic resin, a urethane resin or the like is preferable, and an ethylene-vinyl acetate copolymer resin is particularly preferably used.

The compound in which the isothiocyanate compound or terpene compound is included in cyclodextrin used in the present invention can be used particularly in a high-temperature and high-humidity environment.
By isovoluting the isothiocyanate compound or the terpene compound included in the cyclodextrin, the growth of fungi and bacteria is suppressed, that is, an antibacterial effect is exhibited. Examples of the isothiocyanate compounds include allyl isothiocyanate, isoallyl isothiocyanate, isobutyl isothiocyanate, isopropyl isothiocyanate, ethyl isothiocyanate, nitrophenyl isothiocyanate, phenyl isothiocyanate, butyl isothiocyanate, propyl isothiocyanate, benzyl isothiocyanate, and isothiocyanate. Methyl and the like are preferably used, and allyl isothiocyanate is particularly preferred. Further, as the terpene compound, a-pinene, l
-Limonene, d-limonene, hydrocarbons such as monoterpenes and sesquiterpenes, terpene alcohols, terpene aldehydes and the like can be suitably used. The antioxidant used in the present invention also includes an oxygen scavenger, and is preferably, for example, an inorganic type containing iron powder or the like as a main material or an organic type containing ascorbic acid or catechol as a main material. Can be used for

The adsorbent used in the present invention includes calcium phosphate ceramics such as hydroxyapatite,
Examples include calcium phosphate-based ceramics including amorphous calcium phosphate, tricalcium phosphate, tetracalcium phosphate, octacalcium phosphate, hydrogenated apatite, fluorinated apatite, and the like. In addition, activity and powder thereof can also be used.

An antibacterial agent 6, an antioxidant 7, and an adsorbent 8, each of which is a compound in which these isothiocyanate compounds or terpene compounds are included in cyclodextrin, are separated from each other. It is necessary to be assigned to a section provided between the sheet 2 having barrier properties and the sheet 3 having air permeability, that is, a plurality of independent sections obtained by partially bonding or fusing. The reason for this is that in the antibacterial agent 6 composed of a compound in which the isothiocyanate compound or the terpene compound is included in cyclodextrin, the effective antibacterial component is efficiently volatilized. In addition, it is intended to prevent deterioration due to heating and to prevent the active ingredient from being trapped in the resin.

[0014] Another object of the antioxidant is to prevent the function of preventing the deterioration of fresh foods and processed foods due to oxidation from being lowered by heating or from being trapped in a resin. In the case of an adsorbent, the adsorbent is trapped in the resin,
This is to prevent the adsorption performance of microorganisms adhering to fresh foods and processed foods from decreasing.

FIG. 2 shows another embodiment of the food preserving sheet 1 in which a sheet 2 having gas barrier properties and a sheet 3 having air permeability are laminated, and the sheets are partially fused to each other. A food preservation sheet in which a powder 6 of a compound in which an isothiocyanate compound or a terpene compound is included in cyclodextrin, an antioxidant 7, and an adsorbent 8 are separately supported in a plurality of independent compartments. In addition, portions other than the sections are almost fusion-bonded.

A food storage container formed by using the food storage sheet of the present invention so that the air permeable sheet 3 is formed on the inner surface is formed such that the air permeable sheet is formed on the inner surface and the gas storage property is formed on the outside. Since the sheet having the sheet is arranged, the volatile active ingredient does not leak out of the container and works more efficiently. Further, by using a sheet having particularly excellent oxygen barrier properties as a sheet having gas barrier properties, it is possible to effectively prevent deterioration of food stored in the food storage container 11 of the present invention due to oxidation. Furthermore, since the food storage container 11 of the present invention is also provided with an adsorbent, it is possible to effectively adsorb microorganisms adhering to fresh foods and processed foods.

[0017]

As described above, the food preservation sheet of the present invention is characterized in that the antibacterial agent, the antioxidant, and the adsorbent comprising a compound in which an isothiocyanate compound or a terpene compound is included in cyclodextrin are gaseous. Since a sheet having a barrier property and a sheet having air permeability are independently supported in a plurality of independent sections obtained by partially bonding or fusing between the sheets, In the above antibacterial agent, an isothiocyanate compound or terpene compound as an active ingredient can be volatilized efficiently. In addition, antioxidants can prevent deterioration of fresh and processed foods due to oxidation, and adsorbents can efficiently adsorb microorganisms adhering to fresh and processed foods. it can. Further, unlike the conventional case, there is no deterioration due to heating during the molding process, and no effective component is trapped in the resin. The food storage container of the present invention is formed such that the air permeable sheet is formed on the inner surface, and a sheet having a gas barrier property is disposed on the outer side, so that the characteristics of the food storage sheet described above can be more efficiently used.・ It can be used effectively.

[Brief description of the drawings]

FIG. 1 shows one embodiment of the food storage sheet of the present invention.

FIG. 2 shows another embodiment of the food storage sheet of the present invention.

FIG. 3 is a sectional view of the food storage sheet taken along line AA shown in FIG. 1;

FIG. 4 is a reference sectional view of a food storage container using the food storage sheet shown in FIG. 1;

[Explanation of symbols]

1: food preservation sheet 2: sheet having gas barrier properties 3: sheet having air permeability 4: bonding surface 5:
Fused surface 6: Antibacterial agent 7: Antioxidant 8: Adsorbent 9: Food

Claims (2)

[Claims] An isothiocyanate is provided in each of a plurality of independent compartments obtained by laminating a sheet having a gas barrier property and a sheet having a gas permeability and partially adhering or fusing each other between the sheets. A food preservation sheet comprising an antibacterial agent comprising a compound in which a cyclodextrin is compounded with a compound or a terpene compound, an antioxidant, and an adsorbent in a separated state. 2. An isothiocyanate is provided in each of a plurality of independent compartments obtained by laminating a sheet having a gas barrier property and a sheet having a gas permeability and partially adhering or fusing each other between the sheets. An antibacterial agent consisting of a compound in which a cyclodextrin is compounded with a compound or a terpene compound, an antioxidant, and a sheet carrying the adsorbent in a separated state were formed so that the air-permeable sheet became the inner surface. A food storage container, characterized by that: