JPS62186941A - Deoxidizer containing alcohol - Google Patents

Abstract

PURPOSE:To reduce the generation of aldehydes when the titled deoxidizer is enclosed in a food packaging vessel by mixing an iron component having deoxidizing capability, an ethyl alcohol adsorbent, and a high molecular amine to prepare the deoxidizer. CONSTITUTION:An iron component having deoxidizing capability, an ethyl alcohol adsorbent, and a high molecular amine are mixed, and the mixture is enclosed in a gas-permeable bag to prepare the alcohol-contg. deoxidizer. The deoxidizer is composed of 100pts.wt. iron component having deoxidizing capability, 10-150pts.wt., preferably 20-130pts.wt., alcohol adsorbent, and >=0.1pt.wt., preferably 0.2-50pts.wt., high molecular amine. Reduced iron powder, electrolytic iron powder, sprayed iron powder, etc., can be used as the component having deoxidizing capability. The ethyl alcohol-contg. adsorbent is obtained by adsorbing ethyl alcohol on a porous substance.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to ether alcohol-containing oxygen scavengers.

[Prior art]

When an oxygen absorber is used in packaged foods, the inside of the package is kept anaerobic, thereby significantly inhibiting the growth of aerobic microorganisms such as mold. However, it has been found that many microorganisms proliferate vigorously even under anaerobic conditions, and it is often not possible to ensure substantial preservation by using oxygen scavengers alone.

Therefore, the method of combining ether alcohol and oxygen scavenger is extremely effective in improving the preservability of packaged foods. , On the other hand, when ether alcohol vapor comes into contact with iron-based oxygen scavenger, ether alcohol is oxidized.

It turned out that there is a serious problem of conversion to acetaldehyde. This generation of acetaldehyde is undesirable because it causes discoloration of foods and the generation of off-flavors.

[Means for solving problems]

As a result of various studies, the present inventors found that if a food packaging container is sealed with an oxygen scavenger containing a polymeric amine and an iron-based component with oxygen scavenging ability and an ether alcohol adsorbent, the amount of aldehyde in the container will be reduced. It has been found that the reduction is significantly greater than when using an oxygen scavenger that does not contain a polymeric amine.

The present invention was completed based on the above findings.

That is, the present invention relates to an oxygen scavenger containing an iron-based component having oxygen scavenging ability, an ether alcohol adsorbent, and a polymeric amine.

As the iron-based component having an oxygen scavenging ability used in the present invention, for example, reduced iron powder, electrolytic iron powder, atomized iron powder, etc. are preferable, and the particle size thereof is usually 10 MTS or less.

Preferably it is about 50 meshes or less. In addition, the iron powder does not need to be pure; for example, in order to increase the oxygen scavenging ability,
The surface may be treated with a solution of a metal chloride such as sodium chloride or potassium chloride. or,
Either granular products or molded granular products can be used.

Ether alcohol adsorbent C. Ethyl alcohol is adsorbed onto a porous material, and its adsorption amount is 0.1 to 250 W/W%, preferably 1 to 200%, based on the porous material.
Approximately W/W% is good. Examples of the porous materials used here include 9 zeolite, kaolin, cinnabar earth, talc, bentonite, chestnut, alumina, phosphoric acid gel, silicon dioxide, aluminum silicate, talc, starch, sugar, dextrin, cellulose powder, methyl cellulose, Examples include ethyl cellulose and carboxyvinyl polymer.

Polymer amines include primary amines in polymers.

There are no particular restrictions on the materials as long as they contain secondary amines, 5th amines, and/or quaternary ammonium, but weakly basic anion exchange resins and polyamino acids are preferred.

Examples include polymers having amino sugars. Here, as the anion exchange resin, for example, Amberlite RA4
5 (manufactured by Rohm and Haas).

Examples include Duolite A-565 (manufactured by Diamond Jamrock Co., Ltd.), and it is preferable that the stone has a polyamine as an exchange group.

There are no particular restrictions on the polyamino acid, and examples include polylysine, polyalanine, and polyglutamic acid.

Examples include homopolymers such as polyglycine and polyarginine, and copolymers such as poly(alanine-glycine) and glutamic acid-1-methyl-urethane copolymers.
Those having basic amino acids such as lysine and arginine as constituents are preferred. There is no particular restriction on the average molecular weight, but a practical range is, for example, about 1,000 to 10,000 degrees. The particle size is 10 mesh or less, preferably 5 mesh.
It is preferably 0 mesh or less, more preferably about 100 to 250 meshes.

Examples of polymers containing amino sugars include polysaccharides made of amino sugars such as chitin and gitosan.

These polymeric amines may be free.

In addition, part or all of it may be a salt with an organic or inorganic acid such as an acetate or a hydrochloride. In particular, when using an untreated surface such as reduced iron powder as a component with oxygen scavenging ability, in order to increase the oxygen scavenging ability, it is treated with acid so that part or all of the polymeric amine is in the form of an acid salt. It is preferable to use the one that has become available. The polymeric amine is a dry product,
Both wet products can be used.

The ratio of each component used in the oxygen scavenger of the present invention is 1 part by weight of the alcohol adsorbent for 100 parts by weight of the iron-based component having oxygen scavenging ability.
0 to 150 parts by weight, preferably 20 to 130 parts by weight, 0.1 parts by weight or more of polymeric amine, preferably 0.2 to 50 parts by weight
It is about parts by weight. In addition, for the entire oxygen scavenger of the present invention, 30 to 90 W/W% of iron-based components having oxygen scavenging ability,
Preferably 50 to 80 w/w%, alcohol adsorbent 7 to
50 W/W, preferably 10 to 30 W/W%, polymeric acid 72-20 W/W%, preferably t L < I
d, s ~ 1o W/W % is preferable.

The oxygen scavenger of the present invention may be produced, for example, as follows. That is, the components ether alcohol adsorbent having iron-based oxygen scavenging ability and a polymeric amine may be mixed and sealed in a breathable bag.

〔Effect of the invention〕

Next, the effects of the oxygen scavenger of the present invention will be explained using experimental examples.

Experimental Example [Sample] The oxygen scavengers obtained by the methods of Experimental Examples 1, 2, and 3 were used as Samples 1, 2, and 5 of the present invention, and in Examples 1.2 and 3, Amperite RA-45, chitosan and an oxygen absorber produced without using polylysine was used as a control sample.

〔experimental method〕

The sample and absorbent cotton impregnated with 4 d of water were sealed in an oxygen-impermeable nylon laminated bag, and the air volume in each bag was about 3 aocc.

Then, after being left at room temperature for a predetermined number of days, the amount of acetaldehyde in each bag was measured by gas chromatography. In addition, the oxygen concentration was measured using an oxygen meter.

[Results]

The results are shown in Table-1. Since it is difficult to express the amount of aldehyde as a quantitative value, it is shown as a relative value, with the amount of aldehyde in the bag containing the control sample taken as 100.

Table 1 As is clear from these tables, when the oxygen scavenger of the present invention is used, the amount of aldehyde in the container is lower than when it is not used.
It decreases considerably.

Therefore, the oxygen scavenger of the present invention is particularly suitable for use as a food preservative.

The method for producing the oxygen scavenger of the present invention will be explained below with reference to Examples.

[Example 1] Electrolytic iron powder 100? 2 d of saturated saline solution is added to the mixture, followed by drying under reduced pressure to obtain a deoxidizing composition.

Further, ether alcohol 631 is adsorbed onto fine powder silica gel 372 to obtain an alcohol adsorbent.

The above deoxidizing component 31 and alcohol adsorbent 1? and Amberlite RA-45 (washed with deionized water and dried (60
℃, somin)l, tamono]o, sy are uniformly mixed,
This product was sealed in a paper bag lined with a 4 ctn x 7 cm perforated polyethylene film.

An oxygen scavenger of the present invention was obtained.

[Example 2] An oxygen scavenger of the present invention was obtained in the same manner as in Example 1 except that Chitosan 0.3f was used instead of Amberlite RA-45.

[Example 5] An oxygen scavenger of the present invention was obtained in the same manner as in Example 1 except that polylysine 0.32 having an average molecular weight of too much and a particle size of 150 mesh was used instead of Amperlite RA-45.

Claims (1)

[Claims] An oxygen scavenger containing an iron-based component with oxygen scavenging ability, an ether alcohol adsorbent, and a polymeric amine.