JPH02265429A - Packaged sliced salmon - Google Patents

Abstract

PURPOSE:To prepare a packaged sliced salmon having excellent preservability, taste and flavor retainability by placing the sliced salmon in a high nitrile resin container and sealing the sliced salmon together with a deoxidizing agent in the container. CONSTITUTION:A sliced salmon is placed together with a deoxidizing agent in a high nitrile resin container (thickness is preferably 100-800mum) composed of a copolymer containing >=50wt.% of an unsaturated nitrile such as (meth) acrylonitrile and subsequently sealed with a top film comprising the monolayered or laminated film of a high nitrile resin to provide a packaged sliced salmon. An iron or organic compound based agent is employed as the deoxidizing agent and the residual oxygen amount in the package is preferably <=0.1% at 12hr after the sealing operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sliced salmon package made of a high nitrile resin, and more specifically to a sliced salmon package with excellent preservability, taste and flavor retention. It is related to.

[Conventional technology]

Various studies have been conducted to extend the shelf life of sliced salmon, and as a result, methods have been adopted in which the sliced salmon is stored in a bag with gas barrier properties and sealed or vacuum packed together with an oxygen absorber.

[Problem to be solved by the invention]

However, in the above packaging method, although the shelf life was extended, the most important problem of retention of taste and flavor remained unsolved. That is, when the conventional packaging material was used for sealed packaging together with an oxygen scavenger, the flavor was likely to dissipate, and the flavor deteriorated when stored for a long period of time. In addition, when vacuum packaging is used, the sliced salmon stick together, making it difficult to peel off each piece, easily losing its shape, and easily dissipating the flavor, but also because the sliced salmon is compressed. When eaten, the elasticity was lost and the taste became dull. In addition, the process of storing trays containing sliced salmon in bags is difficult to carry out using an automatic packaging machine, and productivity has also decreased.

An object of the present invention is to provide a sliced salmon package with excellent preservability, taste, and flavor retention.

[Means to solve the problem]

The inventors of the present invention have made extensive studies to solve these problems, and have solved these problems by using a high nitrile resin for packaging sliced salmon and sealing it together with an oxygen absorber, and have finally achieved the present invention. completed.

That is, the present invention is a sliced salmon package characterized by placing sliced salmon in a container made of high nitrile resin and sealing the container together with an oxygen absorber.

There are no restrictions on the type of sliced salmon used in the present invention.

The high nitrile resin used in the present invention is a copolymer mainly composed of unsaturated nitriles such as acrylonitrile and methacrylate, and has an unsaturated nitrile content of 501i1%.
This includes the above. Examples of monomers copolymerizable with unsaturated nitrile include styrene, butadiene, isoprene, methyl acrylate, ethyl acrylate, methyl methacrylate, and ethyl methacrylate, and one or more of these can be used.

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.

The container of the present invention is manufactured by vacuum forming or pressure forming a sheet obtained from the above-mentioned resin by a conventional extrusion molding method, calendar molding method, inflate molding method, or the like. When a high nitrile resin is used, deep drawing is easily possible, and containers of various shapes, such as circles, triangles, and squares, can be obtained.

The thickness of the container of the present invention is determined not only by the gas barrier property but also by the content capacity.
Although it varies depending on the required strength, etc., it is usually preferably 100 to 800 μm, and if it is less than 100 μm, the rigidity as a container will be insufficient, so it is not preferable.On the other hand, it may be more than 800 μm, but the workability will be poor and the cost will increase. Only.

As the top film in the present invention, a single layer film of a high nitrile resin having high gas barrier properties or a multilayer film obtained by laminating the above single layer film on a film of polypropylene, polyethylene, polyester, nylon, etc. can be used.

The film is sealed to the container body by a conventional heat sealing method, impulse sealing method, or the like. The film can also be printed if necessary to increase the commercial value of the package.

The thickness of the top film of the present invention varies depending on the content of unsaturated nitrile monomer, but usually the oxygen permeability is 20c.
c/rd-atm ・24! Preferably, it is less than Ir.

As the oxygen scavenger used in the present invention, any quick-acting oxygen scavenger can be used, but preferred examples include iron-based and organic-based oxygen scavengers that exhibit an oxygen scavenging effect within 12 hours. The oxygen absorber preferably reduces the amount of residual oxygen inside the package to 0.1% or less 12 hours after sealing. If the residual oxygen exceeds 0.1%, the quality of the sliced salmon will deteriorate, and furthermore, spoilage will likely occur.

In the present invention, sliced salmon and an oxygen absorber are placed in a container and sealed with a top film.

Compared to the conventional packaging process, the packaging process of the package according to the present invention makes it possible to omit the process of storing the tray in a bag, thereby improving productivity. Furthermore, by omitting this step, the packaging process can be automated, dramatically improving productivity.

〔Example〕

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

Production Example 1 High nitrile resin (acrylonitrile content, Approximately 70% by weight, based on nitrogen analysis value).
A sheet with a thickness of 300 μm was obtained by extrusion molding. The obtained sheet was vacuum formed to obtain a tray.

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 A laminate film of the film obtained in Production Example 2 and a polypropylene film was obtained.

Example 1 Arrange sliced salmon on the tray obtained in Production Example 1,
Ageless, a product manufactured by Mitsubishi Gas Chemical ■, was stored as an oxygen scavenger, heat-sealed with the film obtained in Production Example 2, and stored at 5''C for 4 weeks.When I ate the sliced salmon, the flavor started to change from the packaging. It held up well and had good elasticity.

Example 2 Example 1 was repeated except that the film obtained in Production Example 3 was used as the top film. When I ate the sliced salmon, I found that the flavor remained the same as when it was first packaged and had good elasticity.

Comparative Example 1 Example 1 was repeated except that no oxygen absorber was used and vacuum packaging was performed. When I ate the sliced salmon, the flavor remained the same as when it was first packaged, but it had lost its elasticity.

Comparative example 2 Example 1 was repeated except that no oxygen scavenger was used.

The results are shown in Table 1. After 4 weeks, the sliced salmon changed color and rotted, making it inedible.

Comparative Example 3 Arrange sliced salmon on a polypropylene tray,
It was stored in a nylon bag coated with vinylidene chloride together with an oxygen absorber and sealed. Thereafter, it was stored at 5°C for 4 weeks. When I ate sliced salmon, the flavor was dull and it was dry.

Comparative Example 4 Arrange sliced salmon on a polypropylene tray,
It was stored in a nylon bag coated with vinylidene chloride and vacuum packed. Thereafter, it was stored at 5°C. When I ate sliced salmon, it had lost its flavor and elasticity.

Comparative Example 5 Arrange sliced salmon on a polypropylene tray,
It was wrapped in polyethylene wrap. After that, 5
Stored at °C. Sliced salmon changes color after 4 weeks.
It rotted and was not edible.

〔Effect of the invention〕

The sliced salmon package of the present invention has extremely good storage stability, flavor, and taste retention, making it possible to provide sliced salmon with good taste and flavor to consumers, and promoting the distribution and sale of sliced salmon. It is a great contribution.

Patent applicant Mitsui Toatsu Chemical Co., Ltd.

Claims (1)

[Claims] 1. A sliced salmon package, characterized in that sliced salmon is placed in a container made of high nitrile resin and sealed together with an oxygen absorber. 2. The sliced salmon package according to claim 1, wherein the high nitrile resin contains 50% by weight or more of an unsaturated nitrile monomer.