JPH1149247A - Package for maitake (hen of the woods) - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a Maitake (hen of the woods) package keeping the quality of housed Maitake and not generating chlorine type harmful gas such as dioxine or the like at the time of the incineration treatment of a waste container. SOLUTION: In a Maitake package wherein a Maitake housing cup-shaped container is covered with a polyolefin film, an opening part having a size corresponding to a circular hole with a diameter of 10-20 mm per 100 g of Maitake is provided to the polyolefin film and a sheet made of an air permeable material is bonded to the polyethylene film so as to cover the opening part. As the sheet made of the air permeable material, paper, a nonwoven fabric or a microporous film is designated. Moisture or gas generated from Maitake is discharged through the sheet made of the air permeable material bonded to the opening part and the open air also flows through the sheet made of the air permeable material and, therefore, even if the opening part is made large, air passing quantity is controlled to a proper value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package of Maitake mushrooms which maintains the quality of stored Maitake mushrooms and which does not generate chlorine-based harmful gas such as dioxin when incinerating waste containers. .

[0002]

2. Description of the Related Art Fresh food packages in which fresh food is stored in a tray and covered with a plastic film are widely used. In general, the lower the breathability of the packaging film, the less the weight of the packaged food during transportation, storage and display at the store is reduced.
However, metabolism of mushrooms such as shiitake mushrooms and maitake mushrooms is maintained, and if the air permeability of the packaging film is low, a bad smell or discoloration occurs in a short period of time, losing commercial value. This tendency is particularly remarkable for mushrooms among mushrooms.

In general, the air permeability of a polyolefin film is far inferior to that of a vinyl chloride film. Therefore, a vinyl chloride film having good air permeability has been frequently used as a packaging film for mushrooms. However, plastic packaging materials containing chlorine, such as vinyl chloride film and vinylidene chloride film, generate harmful chlorine gas such as chlorine gas and dioxin in the incineration of waste containers. ing.

As a means for improving the air permeability of a package of mushrooms, a hole of a specific size (0.1 mm in diameter per 500 g of mushrooms) is formed in a synthetic resin film which covers the mushrooms in a substantially sealed state.
(A hole having an area equivalent to a 5.0 mm circular hole) (JP-A-62-235086), and an opening having a total opening area ratio of 0.0002 to 0.010% based on the total surface area of the film. Provided (JP-A-4-53445), the total opening area is 0.4 to 4.0 based on the weight of vegetables and fruits such as raw shiitake.
mm ² / kg aperture (Japanese Unexamined Patent Publication No. 5-1689)
No. 38), a film using a film having a specific gas permeability having a specific value (JP-A-4-57763, JP-A-8-253269), a porous synthetic resin film (pore size 2).
A device using a microporous film of 0 to 150 μm (Japanese Patent Laid-Open No. 5-153907) has been proposed, but these are mainly intended for shiitake mushrooms.

However, since artificial mushrooms, which have recently become widely available on the market, are more active in metabolism than shiitake mushrooms, in order to prevent odors from being trapped in the packaging, the above opening area is not sufficient. I found enough. However, increasing the open area and allowing the air to flow freely is, on the other hand, a more active metabolism of Maitake mushrooms. Satisfactory results cannot be obtained by simply increasing the pore diameter.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, maintains the quality of stored mushrooms, and incinerates waste containers, incurs harmful chlorine-based gases such as dioxin. It is an object of the present invention to provide a package of Maitake mushrooms that does not cause sprouts.

[0007]

SUMMARY OF THE INVENTION A Maitake mushroom package according to the present invention is a Maitake mushroom package in which a cup-shaped container containing Maitake mushrooms is covered with a polyolefin film. An opening having a size corresponding to a circular hole having a diameter of 10 to 20 mm per hit is provided, and a sheet made of a breathable material is attached so as to cover the opening.

The water and gas generated from the mushrooms are discharged through the sheet made of a breathable material attached to the opening, and the outside air also flows through the sheet made of the breathable material. The ventilation rate is also controlled to an appropriate value.

As a sheet made of a breathable material, paper (Western paper,
Washi), nonwoven fabric or microporous membrane are preferred. If printed on the surface of the sheet and used also as a trademark label or a quality label, there is no sense of incongruity even when affixed to the film portion on the upper surface of the container.

The material of the cup-shaped container may be a foamed plastic generally used for the packaging of fresh food, but a pulp molded product is preferable in view of the problem of incineration of waste containers.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to FIG. 1. A package of Maitake mushrooms in which a cup-shaped container 1 containing Maitake mushrooms 5 is covered with a polyolefin film 2 is shown. And 10 m diameter per 100g of mushroom
An opening 3 having a size corresponding to a circular hole of about 20 mm is provided,
A sheet 4 made of a breathable material larger than the size of the opening is attached so as to cover the opening.

Hereinafter, embodiments and effects of the present invention will be described specifically with reference to Examples, but the present invention is not limited to the following Examples.

[0013]

Comparative Example 1 100 g of Maitake mushrooms were stored in a cup-shaped container made of expanded polystyrene, shrink-packed with a polyolefin film (Sekisui Chemical wrap film PW-1: manufactured by Sekisui Chemical Co., Ltd.), and substantially sealed. A package of dried mushrooms was produced.

[0014]

Comparative Example 2 100 g of Maitake mushrooms were placed in a cup-shaped container made of expanded polystyrene, shrink-packed with a polyolefin film (Sekisui Chemical wrap film PW-1: manufactured by Sekisui Chemical Co., Ltd.), and substantially sealed. Then, a package of Maitake mushroom having a circular hole having a diameter of 5 mm in the upper part of the film was produced.

[0015]

[Comparative Examples 3 to 5] The diameter of the circular hole was 10 mm (Comparative Example 3).
A package of Maitake mushrooms was produced in the same manner as in Comparative Example 2 except that the thickness was changed to 5 mm (Comparative Example 4) and 20 mm (Comparative Example 3).

[0016]

Comparative Example 6 100 g of Maitake mushroom was placed in a cup-shaped container made of expanded polystyrene, shrink-packed with a polyolefin film (Sekisui Chemical wrap film PW-1: manufactured by Sekisui Chemical Co., Ltd.), and substantially sealed. A laminated product of a microporous polypropylene membrane and a non-woven fabric, with a 4.5 mm long x 8.0 cm wide adhesive layer provided on the back side, covering the hole with a 5 mm diameter circular hole at the top of the film (Trade name Sekisui Serpore: manufactured by Sekisui Chemical Co., Ltd.) was produced to prepare a package of Maitake mushrooms.

[0017]

EXAMPLE 1 100 g of Maitake mushrooms were placed in a cup-shaped container made of expanded polystyrene, shrink-packed with a polyolefin film (Sekisui Chemical wrap film PW-1: manufactured by Sekisui Chemical Co., Ltd.), and substantially sealed. A laminated product of a microporous polypropylene membrane and a non-woven fabric with an adhesive layer on the back with a size of 4.5 x 8.0 cm covering a hole with a diameter of 10 mm at the top of the film and covering this hole (Trade name Sekisui Serpore: manufactured by Sekisui Chemical Co., Ltd.) was produced to prepare a package of Maitake mushrooms.

[0018]

Embodiments 2-3 The diameter of the circular hole is 15 mm (Example 2), 2
A package of Maitake mushrooms was produced in the same manner as in Example 1 except that the thickness was set to 0 mm (Example 3).

[0019]

Comparative Example 7 Film packaging was not performed with 100 g of Maitake mushrooms kept in a cup-shaped container made of expanded polystyrene.

[0020]

[Freshness test] The mushroom packages of Examples 1 to 3 and Comparative Examples 1 to 7 were packaged at room temperature (average about 22 ° C, relative humidity 70 to 85%) for 3 days or at low temperature (average about 5 ° C, relative humidity). 90-95%)
Table 1 shows the results of an odor determination test performed by a plurality of subjects on the sample stored for 6 days. The numbers in the table indicate the order when ten samples are arranged in the order in which the odor is low and the freshness is good, and the smaller the numerical value, the better the freshness. Table 1 shows the results.

The package of Maitake mushrooms (Comparative Example 1) shrink-packed with a polyolefin film to make them substantially closed had the strongest odor. Odor was also observed in Maitake mushroom packages (Comparative Examples 2 to 5) in which circular holes having diameters of 5, 10, 15, and 20 mm were formed in the upper part of the polyolefin film. An opening of a size corresponding to a circular hole having a diameter of 10 to 20 mm is provided on the upper part of the polyolefin film, and a package made of Maitake mushrooms is attached with a sheet made of a breathable material so as to cover the opening (Example 1).
~ 3) had the least odor. Even when a sheet made of a breathable material was adhered, a desired result was not obtained when the pore diameter was 5 mm (Comparative Example 6).

[0022]

[Table 1]

[0023]

[Weight Loss Test] Table 2 shows the weight loss rate of the Maitake mushrooms when the packaged Maitake mushrooms of Examples 1 to 3 and Comparative Examples 1 to 7 were stored at room temperature for 3 days or at a low temperature for 6 days.

[0024]

[Table 2]

It is inevitable that the weight loss will increase if the pore diameter increases, but the weight loss is reduced by attaching a sheet made of a breathable material so as to cover the opening.

A package of maitake mushrooms similar to that of Example 2 was manufactured using paper (high quality paper) as a sheet made of a breathable material, and a freshness test and a weight loss test were performed. Similar results were obtained.

[0027]

According to the present invention, while maintaining the quality of the stored mushrooms,
Does not generate chlorine-based harmful gases such as chlorine and dioxin when incinerating waste containers.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an example of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cup-shaped container 2 Polyolefin film 3 Film opening 4 Sheet made of air-permeable material 5 Maitake

Claims (2)

[Claims] 1. A package of Maitake mushrooms in which a cup-shaped container containing Maitake mushrooms is covered with a polyolefin film, wherein the polyolefin film has a diameter of 10 to 20 per 100 g of Maitake mushrooms.
A package of Maitake mushrooms, which is provided with an opening having a size corresponding to a circular hole of mm, and a sheet made of a breathable material attached to cover the opening. 2. The package for Maitake mushrooms according to claim 1, wherein the sheet made of a breathable material is paper, a nonwoven fabric, or a microporous membrane.