JPH06100048A - Partitioning material for food with antibacterial property - Google Patents

Abstract

PURPOSE:To assign antibacterial property, and improve the keeping quality by containing isothiocyannic ester in a porous base material to form a partitioning material, for a partitioning material of a container for sushi, etc. CONSTITUTION:A saw-blade shape 11 is formed by punching one edge of a porous base material 3 for which a paper or pulp, etc., is formed into a film form, sheet form or plate form, by a press, etc., and thus 'baran' 1 is formed. An antibacterial agent 2 is impregnated in the 'baran' 1 to make a 'baran' shape partitioning material 1. A pattern of 'baran' or tree leaf may be printed on the porous base material 3. For the antibacterial agent 2, liquid isothiocyanic ester is used, the base material 3 is simply impregnated by the antibacterial agent 2, and the impregnation ratio shall be approx. 0.5-15 pts.wt. to 100 pts.wt. of the porous base material 3. Also, a fragrance substance such as cinnamic acid, etc., may be blended with the antibacterial agent 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is used as a partition material for partitioning food by placing it between foods of different kinds when storing several kinds of foods in a packaging container such as sushi, bento and sashimi. The present invention relates to a food partitioning material having antibacterial properties.

[0002]

BACKGROUND OF THE INVENTION Partitioning materials for foods are such that when foods such as sushi, bento, and sashimi are stored in a packaging container, different foods come into contact with each other and the color, flavor, etc. are altered. It is to partition each food so that it is not done. As this food partitioning material, for example, one having a decorative function such as balun, large leaf, or maple formed of synthetic resin or the like is known.

Further, if the food stored in the packaging container is left to stand for several days, molds and bacteria grow. Therefore, isothiocyanate ester, which is known as a substance having an antibacterial effect, is used in order to prevent the generation of mold and the growth of bacteria in foods. This isothiocyanate is an extract component from wasabi root and mustard seeds, and is harmless to the human body, and thus is suitable as an antibacterial agent for food.

As a method of using the isothiocyanate ester to prevent the growth of fungi and suppress the growth of bacteria in foods, for example, JP-A-2-109962 and JP-A-3-224 are available.
Japanese Patent Laid-Open No. 437 proposes a method for preserving foods in which volatile gas of isothiocyanate ester is caused to exist during storage of foods to suppress the growth of mold and bacteria in the foods. Further, Japanese Utility Model Laid-Open No. 3-129083 proposes a freshness-keeping material for a refrigerator.
A gel-like substance or powder containing an isothiocyanate as an active ingredient is filled or held in a breathable package. By providing this refrigerator freshness-keeping material in the refrigerator, bacterial propagation is suppressed in the fresh food in the refrigerator by the isothiocyanate volatile gas.

However, with this freshness-keeping material for refrigerators, since the volatile gas of isothiocyanate does not reach the food stored in the hermetically sealed container, the antibacterial effect cannot be provided. In addition, Japanese Utility Model Laid-Open No. 3-112296 proposes an antibacterial pack material, and this antibacterial pack material is a cyclodextrin clathrate compound of isothiocyanates in a breathable and water-impervious bag. Is enclosed. Then, the antibacterial pack material is hermetically packaged together with the food, thereby suppressing the growth of bacteria adhered to the food.

[0006] However, in this antibacterial pack material, when several kinds of foods are used in a packaging container which is partitioned by a partition material and stored, a volatile gas of isothiocyanate which is gradually released from the pack material is partitioned. Blocked by material. For this reason, if it is partitioned by a partition material, it is sufficient for the food stored in the packaging container unless an antibacterial pack material is put in each partitioned partition to give an antibacterial effect to the food. Can not give an antibacterial effect.

Further, it is very troublesome to put the antibacterial pack material in each of the compartments partitioned by the partition material. Therefore, an object of the present invention is to provide a simple and sufficient antibacterial effect even when several kinds of foods are stored in a packaging container using a partitioning material, and foods having antibacterial properties capable of improving shelf life of foods. The purpose is to provide a partition material.

[0008]

In order to solve the above problems, an antibacterial food partitioning material of the present invention is a porous substrate for partitioning several kinds of foods contained in a hermetically sealed container. The porous substrate contains isothiocyanate as an antibacterial agent.

[0009]

According to the partition material for food having antibacterial properties of the present invention having the above-mentioned constitution, since the isothiocyanic acid ester as an antibacterial agent is contained in the porous substrate, the isothiocyanic acid ester of the antibacterial component is contained. Is gradually released as volatile gas. Thereby, the volatile gas is gradually released from the food partition material that partitions several types of food, and the volatile gas is spread over the entire food without being blocked by the partition material,
It is possible to exert an antibacterial effect.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a partially cutaway plan view of a food partitioning material having an antibacterial property according to an embodiment of the present invention, and FIG. 2 shows a sectional view thereof. The food partition material shown in FIG. 1 is a balun 1 in which one side of the porous substrate 3 is formed in a serrated shape 11. The balun 1 is formed by punching the green colored porous base material 3 with a press or the like.

As shown in FIG. 2, the antibacterial agent 2 is impregnated in the porous base material 3 forming the balun 1. As the antibacterial agent 2, isothiocyanic acid ester which is an antibacterial component is used. The isothiocyanate ester as the antibacterial agent 2 is gradually released from the porous substrate 3 as a volatile gas. As a result, the isothiocyanate ester is gradually released from the balun 1 formed on the porous substrate 3.

The above-mentioned porous substrate 3 is, for example, paper,
Pulp, wood, non-woven fabric, cloth or the like formed into a film, sheet or plate is used. Examples of the isothiocyanate ester include allyl isothiocyanate, methyl isothiocyanate, ethyl isothiocyanate, n-propyl isothiocyanate, isopropyl isothiocyanate, n-butyl isothiocyanate, isobutyl isothiocyanate, isoamyl isothiocyanate, and the like.
Phenyl isothiocyanate, benzyl isothiocyanate and the like are used, and among them, allyl isothiocyanate having an excellent antibacterial effect is preferably used. The isothiocyanic acid ester is volatilized to give an antibacterial effect such as antifungal and bacterial growth inhibition to foods. Further, isothiocyanates are usually liquid and oily and can be extracted from horseradish and mustard, but they can also be industrially produced, for example, as shown in the following formula (1), amine An intermediate obtained by reacting carbon sulfide can be produced by decomposing it with silver nitrate as shown in the following formula (2).

[0013]

[Chemical 1]

(In the formula, R represents a hydrocarbon group which may have a substituent.) Alternatively, it can be obtained by heat-treating a thiocyanate ester for isomerization. The isothiocyanic acid ester can be contained in the porous substrate 3 by various methods such as immersing the porous substrate 3 directly in a liquid isothiocyanate ester. The isothiocyanate ester is impregnated into the porous base material 3 in an amount of 0.5 to 15 parts by weight, preferably 2.5 to 10 parts by weight, based on 100 parts by weight of the porous base material. . If this ratio is less than 0.5 parts by weight, the duration of the antibacterial effect is shortened, and conversely if it is more than 15 parts by weight, it may be difficult to maintain the shape of the substrate.

Most of the isothiocyanate ester has an odor, so that it changes or eliminates the odor, so that an aromatic substance can be mixed into the porous substrate 3. As the aromatic substance, for example, aromatic substances added to foods such as cinnamic acid, vanillin, geranyl acetate, pepper oil, and ethyl acetate can be used.

Next, FIG. 3 shows a usage state of the partitioning material for food having the antibacterial property of the above-mentioned embodiment. As a usage state of the balun 1, three kinds of different foods stored in the packaging container 4 are shown. Each food A, so that A, B and C do not touch
It is arranged between B and C. Further, a polyvinylidene chloride film 5 (for example, a product name “Saran Wrap” manufactured by Asahi Kasei Co., Ltd.) is covered on the upper portion of the packaging container 4 and the inside thereof is sealed.

As described above, according to the balun 1 as the partitioning material for food of the above-mentioned embodiment, the volatile gas of the isothiocyanate ester as the antibacterial component is gradually released from the balun 1. The balun 1 can exert an antibacterial effect by spreading the volatile gas over the foods A, B, C stored in the packaging container 4. In addition, this packaging container 4
Since the inside is sealed with a film 5 made of polyvinylidene chloride, the atmosphere of the packaging container 4 is filled with the volatile gas of the isothiocyanate ester gradually released from the balun 1.

Therefore, it is possible to easily prevent the generation of mold and bacterial growth in the foods A, B, and C stored in the container 4 for a long period of time, and improve the shelf life of the foods A, B, and C. You can The partitioning material for foods having antibacterial properties according to the present invention is not limited to the above-mentioned embodiment, and may be, for example, a leaf shape such as a large leaf or a maple, or another shape other than the balun 1. Further, as shown in FIG. 4, the large leaf pattern 1 is formed on the porous substrate 3 forming the food partitioning material 1a.
Like baluns and leaves, like those printed on
Various design changes can be made without changing the gist of the present invention, such as printing on other patterns.

[0019]

As described above, according to the food partitioning material having antibacterial properties of the present invention, the porous substrate is impregnated with isothiocyanate as an antibacterial agent,
This isothiocyanate is gradually released as a volatile gas. As a result, the volatile gas can be spread over the entire food product without being blocked by the partition material, and an antibacterial effect can be exerted.

Therefore, even when several kinds of food are stored in a sealed container, the antibacterial effect can be easily and sufficiently exerted, mold and bacterial growth of the food can be prevented for a long time, and the shelf life of the food can be improved. You get what you can.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an antibacterial food partitioning material according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the food partition material of FIG.

FIG. 3 is a cross-sectional view showing a usage state of the food partitioning member of FIG. 1.

FIG. 4 is a partially cutaway plan view showing a food partitioning material having antibacterial properties according to another example of the present invention.

[Explanation of symbols]

 A, B, C Food 1 Balun (Partition material for food) 1a Partition material for food 2 Antibacterial agent 3 Porous substrate

Claims (3)

[Claims] 1. A porous base material for partitioning several kinds of foods contained in a hermetically sealed container, wherein the porous base material contains isothiocyanate as an antibacterial agent. A food partitioning material having antibacterial properties. 2. The partition material for food having antibacterial properties according to claim 1, wherein the porous base material is formed into a shape of balun, leaves or the like. 3. The food partitioning material having antibacterial properties according to claim 1, wherein a pattern such as balun or leaves is printed on the porous substrate.