JPH03112441A - Packaged material of asazuke - Google Patents

Abstract

PURPOSE:To make possible to preserve ASAZUKE (fresh radish preserved with salt and malt) for a long period of time without deterioration of color, taste and flavor, etc., by storing ASAZUKE together with oxygen scavenger using a vessel or a bag composed of a high nitrile-based resin derived from copolymerization of a specific amount of an unsaturated nitrile. CONSTITUTION:Unsaturated nitrile such as (meth)acrylonitrile is copolymerized with copolymerizable monomer (e.g. styrene or butadiene) to obtain a high nitrile-based resin containing >=50% unsaturated nitrile monomer and molded to obtain a vessel or a bag 3. Next, ASAZUKE 1 (e.g. ASAZUKE of eggplant or cucumber) is received in the resultant vessel or bag 3 together with an oxygen scavenger 2 (e.g. iron-based oxygen scavenger) and sealed with a top film 4 to produce packaging material of ASAZUKE. By said method, ASAZUKE having excellent freshness is able to be preserved for a long period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a package for light pickled vegetables, and more particularly, it relates to a package for light pickled vegetables that is excellent in color and flavor retention.

[Conventional technology]

Traditionally, lightly pickled vegetables are stored in polyethylene bags, etc.
Alternatively, gas filling was used as a preservation method, but with the former, the taste and color fading are significant, and the commercial value of eggplants and the like in particular decreases in a short period of time.

The latter had problems such as high machine costs. In other words, the problem of preserving the color and taste of lightly pickled vegetables remains unsolved.

(Problems to be Solved by the Invention) An object of the present invention is to provide a package that retains the color and flavor of lightly pickled vegetables, which was not possible with conventional packaging methods.

[Means to solve the problem]

In order to achieve the above object, the present inventors have made extensive studies,
The present invention was achieved step by step.

That is, the present invention provides pickled vegetables in a container made of a high nitrile resin containing 50% or more of unsaturated nitrile monomer;
Alternatively, it is a packaged product for lightly pickled vegetables, which is characterized by being stored together with an oxygen absorber in a bag.

There are no restrictions on the type or form of pickled vegetables used in the present invention.

The high nitrile resin used in the present invention is a copolymer mainly composed of unsaturated nitrile such as acrylonitrile and methacrylonitrile, and contains 50% by weight or more of unsaturated nitrile. Examples of monomers copolymerizable with unsaturated nitrile include styrene, butadiene, isoprene, methyl acrylate, ethyl acrylate, methyl meccrylate, ethyl methacrylate, etc., and one or more of these may be used. I can do it.

In addition, mixtures of rubber-like polymers such as butadiene-acrylonitrile copolymers, isoprene-acrylonitrile copolymers, butadiene-styrene copolymers, polybutadiene, polyisoprene, etc. and copolymers mainly composed of unsaturated nitriles, and copolymers of these It is also possible to use a product obtained by graft polymerizing an unsaturated nitrile and the above copolymerizable monomer in the presence of a rubbery polymer.

Examples of packaging bodies used in the present invention include containers, bags, and the like.

The container used in the present invention is manufactured by obtaining a sheet of the resin by a conventional extrusion molding method, calendar molding method, inflation molding method, etc., and then vacuum forming or pressure forming the sheet.

High nitrile resins can be easily deep-drawn to produce containers of various shapes, such as circles, ovals, squares, and hexagons.

The thickness of the container made of high nitrile resin used in the present invention is determined by the required gas barrier properties and rigidity, but is preferably 0.1 to 0.8 mm. 0.11
If it is less than that, the rigidity will be insufficient, which is not preferable. Also, 0.
Although it is possible to exceed 8 m+m, this will only result in poor workability or increase in cost.

The top film (lid) of the container in the present invention includes:
A single layer film of high nitrile resin, polycarbonate resin or polyester resin, or a multilayer film obtained by laminating the above single layer film or ethylene-vinyl alcohol copolymer film on a film made of other thermoplastic resin, etc. can be used.

The top film is sealed to the container body using the usual heat sealing method, impulse sealing method, etc.

The film can also be printed if desired to increase the commercial value of the package.

For the bag used in the present invention, a film is obtained from the above resin by a conventional extrusion molding method, a calendar molding method, an inflation molding method, etc., and the film is made into a bag by a heat sealing method, an impulse sealing method, a high frequency welding method, etc.

The thickness of the bag made of high nitrile resin used in the present invention is
The thickness is determined depending on the required gas barrier properties, but is preferably 10 to 100 μm. If the steel is less than 10μ, the gas barrier properties will be insufficient, which is not preferable. Also, 100μ
It is okay to exceed m, but on the other hand, workability may become poor,
It just becomes a cost amplifier.

[Effect]

An example of implementation of the present invention will be described based on the drawings.

FIGS. 1 and 2 are cross-sectional views of the pickled vegetables package of the present invention. The lightly pickled vegetables 1 are placed together with the oxygen absorber 2 in a container 3 made of high nitrile resin, and the top film 4 is used, or the lightly pickled vegetables are stored together with the oxygen absorber 2 in a bag 5 also made of high nitrile resin. By sealing, it is possible to prevent the color and taste of pickled vegetables from deteriorating.

(Example〕 The present invention will be explained below with reference to Examples.

Production Example 1 Using Valex (trade name manufactured by Mitsui Toatsu Chemical Co., Ltd.) as a high nitrile resin, a product with a thickness of 300 μm was extruded.
A sheet of I was obtained. The obtained sheet was vacuum formed to obtain a container with a capacity of 500 cc.

Production Example 2 Using the same high nitrile resin as in Production Example 1, a film with a thickness of 40 μm was obtained by inflation molding.

Production Example 3 The film obtained in Production Example 2 was processed into a bag by a known method to obtain a bag with a capacity of 500 cc.

Example 1 Lightly pickled eggplants were placed in the container obtained in Production Example 1, heat-sealed and sealed with the film obtained in Production Example 2 together with an oxygen absorber, and stored at 5°C for 10 days. Changes in appearance, odor,
Sensory evaluations such as taste were conducted. The results are shown in Table 1.

Example 2 Lightly pickled eggplant was placed in the bag obtained in Production Example 3, heat-sealed with an oxygen absorber, and stored at 5°C for IO days. The results are shown in Table 1.

Comparative Example 1 Example 1 was repeated except that no oxygen scavenger was used. The results are shown in Table 1.

Comparative Example 2 Example 1 was repeated except that a polyethylene container was used instead of the high nitrile resin container.

The results are shown in Table 1.

Comparative Example 3 Example 1 was repeated except that a polyethylene bag was used instead of the high nitrile resin bag. The results are shown in Table 1.

Comparative Example 4 Lightly pickled eggplant was placed in a polystyrene paper molded tray, wrapped in plastic wrap, and heated with an oxygen absorber at 5°C for 10 days.
Saved for days. The results are shown in Table 1.

Table 1 [Effects of the Invention] The pickled vegetables package of the present invention retains extremely good color and flavor, and allows the fresh pickled vegetables to be stored for a long period of time. This makes it possible to provide excellent lightly pickled vegetables, which will greatly contribute to a wide range of food distribution and sales.

4. Description of the Drawings FIGS. 1 and 2 are sectional views showing the package for lightly pickled vegetables of the present invention.

1 pickled vegetables 2 Oxygen absorber 3 containers top film 5 bags

Claims (1)

[Claims] 1. A package for light pickled vegetables, characterized in that the light pickled vegetables are stored in a container or bag made of a high nitrile resin containing 50% or more of unsaturated nitrile monomers, together with an oxygen absorber.