JP2840331B2 - How to keep leafy vegetables fresh - Google Patents

How to keep leafy vegetables fresh

Info

Publication number
JP2840331B2
JP2840331B2 JP27712589A JP27712589A JP2840331B2 JP 2840331 B2 JP2840331 B2 JP 2840331B2 JP 27712589 A JP27712589 A JP 27712589A JP 27712589 A JP27712589 A JP 27712589A JP 2840331 B2 JP2840331 B2 JP 2840331B2
Authority
JP
Japan
Prior art keywords
water
leafy vegetables
sheet
freshness
maintaining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP27712589A
Other languages
Japanese (ja)
Other versions
JPH03148470A (en
Inventor
潤一 黒木
浩三 三田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP27712589A priority Critical patent/JP2840331B2/en
Publication of JPH03148470A publication Critical patent/JPH03148470A/en
Application granted granted Critical
Publication of JP2840331B2 publication Critical patent/JP2840331B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はシートを用いた葉菜類の鮮度保持方法に関す
る。The present invention relates to a method for maintaining freshness of leafy vegetables using a sheet.

〔従来の技術〕[Conventional technology]

青果物の中でも葉菜類は水分蒸散に起因する枯れ、萎
れ等が特に激しく、現在では、ポリエチレンからなる袋
での包装または水に濡らした新聞紙で根や茎を包装し、
高湿度環境下とし蒸散を抑制する方法が一般的である。Among the fruits and vegetables, leafy vegetables wither due to water evaporation and wither, especially wilting, etc.Currently, the roots and stems are wrapped in polyethylene bags or wrapped in newsprint wet with water,
A method of suppressing transpiration under a high humidity environment is generally used.

しかし、ポリエチレンからなる袋に入れる包装方法で
は、夏の高温時に袋内に蒸散した水分が結露し、カビの
発生による腐敗が大きな問題であり、また、作業性が悪
いという欠点を有していた。However, in the packaging method of putting in a bag made of polyethylene, moisture evaporated in the bag is condensed at the time of high temperature in summer, and there is a serious problem that rot due to the generation of mold is a serious problem, and the workability is poor. .

また、水に濡らした新聞紙等で根あるいは茎を包装す
る方法は、パルプの物理的吸水性を利用しているため、
水分の絶対的な保持量が少ないため、産地から消費地ま
で輸送する間に、新聞紙はほとんど乾いてしまい、枯
れ、萎れ等を防止することはできなかった。また、新聞
紙に発生するカビも大きな問題であった。Also, the method of packaging the roots or stems with newsprint etc. wet with water uses the physical water absorption of pulp,
Due to the low absolute holding amount of water, the newspaper was almost dried during transportation from the producing area to the consuming area, and it was not possible to prevent withering and withering. In addition, mold generated on newspapers was also a major problem.

以上の様な問題点を解決するため、特開昭58−40035
に示されるような、葉菜類の鮮度保持方法が提示されて
いるが、上記の方法では、吸水・保水量の点では問題な
いが、吸水・保水シートに抗菌性が無いため、葉菜類に
付着しているカビ等の微生物により吸水・保水シートが
カビに代表される微生物の温床となる欠点を有してい
た。また、上記方法には吸水される水の中に青果物の栄
養剤、防ばい剤等の添加物を含有する場合についても使
用可能であると付記してあるが、栄養剤を使用すること
は吸水・保水シートがかえって有害微生物の増殖を促進
させることになる恐れがある点で食品衛生上問題があ
り、また、防ばい剤を使用する場合においても、わざわ
ざ防ばい剤を所定量添加した水を用意しなければならな
い点で簡便でなく、またかかる防ばい剤が青果物と直接
接触するのは食品衛生の上からも好ましいものではなか
った。To solve the above problems, Japanese Patent Application Laid-Open No. 58-40035
As shown in the above, a method for maintaining the freshness of leaf vegetables has been proposed, but in the above method, there is no problem in terms of water absorption and water retention, but since the water absorption and water retention sheet has no antibacterial properties, it adheres to leaf vegetables. There is a drawback that the water absorption / water retention sheet becomes a hotbed of microorganisms represented by mold by microorganisms such as mold. In addition, the above-mentioned method states that it is possible to use nutrients for fruits and vegetables and additives such as sunscreens in the water to be absorbed. -There is a problem in food hygiene in that the water retention sheet may instead promote the growth of harmful microorganisms.In addition, when using a deodorant, use water with a predetermined amount of deodorant added. It was not convenient in that it had to be prepared, and it was not preferable from the viewpoint of food hygiene that such a protective agent would come into direct contact with fruits and vegetables.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

本発明の課題は、上記従来技術の問題点を解決するこ
とにあり、葉菜類を収容した包装体内を高湿度環境下に
保持して、枯れ・腐れを防止しつつ高湿度環境下で問題
となるカビの発生を効果的に抑制し、かつ包装時の作業
能率の向上にも寄与する葉菜類の鮮度保持手段を新たに
開発することにある。An object of the present invention is to solve the above-described problems of the related art, and it is a problem in a high-humidity environment while keeping a package containing leafy vegetables in a high-humidity environment while preventing withering and decay. An object of the present invention is to newly develop means for maintaining freshness of leafy vegetables, which effectively suppresses the occurrence of mold and contributes to an improvement in work efficiency at the time of packaging.

〔課題を解決するための手段〕[Means for solving the problem]

本発明者らは上記課題を解決すべく鋭意研究の結果、
100〜600g/m2の吸水・保水能を有し、かつ抗菌剤を含有
せしめた葉菜類の鮮度保持用シートを新たに開発し、本
発明を完成するに至ったものである。The present inventors have conducted intensive studies to solve the above problems,
A sheet for keeping freshness of leafy vegetables having an antibacterial agent and having a water absorption / water retention capacity of 100 to 600 g / m 2 has been newly developed, and the present invention has been completed.

すなわち、本発明の構成は以下（１）〜（10）の通り
である。That is, the configuration of the present invention is as follows (1) to (10).

1.100〜600g/m2吸水・保水能を有する吸水材と抗菌剤と
を含有せしめたシートを用意し、葉菜類を包装するに際
し、包装体内に吸水・保水せしめられた前記シートを葉
菜類とともに収容せしめることを特徴とする葉菜類の鮮
度保持方法。1.100~600g / m the sheet for the additional inclusion of a water absorbent material and the antimicrobial agent was prepared having 2 water-water retention capacity, when packaging the leaf vegetables, the sheet was allowed to water-water retention in the packaging body that allowed to accommodate with leaf vegetables A method for maintaining the freshness of leafy vegetables, characterized by the following.

2.抗菌剤が抗菌性物質を担体に担持せしめたものである
葉菜類の鮮度保持方法。2. A method for maintaining the freshness of leafy vegetables, in which the antibacterial agent has an antibacterial substance carried on a carrier.

3.担体がゼオライトまたは活性炭である葉菜類の鮮度保
持方法。3. A method for maintaining the freshness of leafy vegetables whose carrier is zeolite or activated carbon.

4.抗菌性物質が重金属である葉菜類の鮮度保持方法。4. A method for maintaining freshness of leafy vegetables whose antibacterial substance is heavy metal.

5.重金属が銀、銅、亜鉛から選ばれる１種以上である葉
菜類の鮮度保持方法。5. A method for maintaining the freshness of leafy vegetables wherein the heavy metal is at least one selected from silver, copper and zinc.

6.シートが吸水材と抗菌剤とを含む層を中間層としてそ
の上下面を被覆材で被覆し一体化したものである葉菜類
の鮮度保持方法。6. A method for maintaining freshness of leafy vegetables, wherein the sheet is formed by integrating a layer containing a water-absorbing material and an antibacterial agent as an intermediate layer and covering the upper and lower surfaces with a coating material.

7.シートが更に包装材で被包後一体化したものである葉
菜類の鮮度保持方法。7. A method for maintaining the freshness of leafy vegetables, wherein the sheet is further integrated after being wrapped with a wrapping material.

8.シートが少なくとも一方の面における被覆材または被
覆材と包装材が通気性及び透水性を有するものである葉
菜類の鮮度保持方法。8. A method for maintaining freshness of leafy vegetables, wherein the covering material on at least one surface of the sheet or the covering material and the packaging material have air permeability and water permeability.

9.シートの一方の面における被覆材および／または包装
材が防水性を有するものである葉菜類の鮮度保持方法。9. A method for maintaining the freshness of leafy vegetables, wherein the covering material and / or the wrapping material on one surface of the sheet is waterproof.

10.吸水材が吸水性高分子材料からなる葉菜類の鮮度保
持方法。10. A method for maintaining the freshness of leafy vegetables whose water-absorbing material is made of a water-absorbing polymer material.

以下に本発明をさらに詳細に説明する。 Hereinafter, the present invention will be described in more detail.

本発明における葉菜類の鮮度保持方法は、その実施に
際し、シートを吸水・保水させ、これを葉菜類とともに
包装するもので、シート1m2あたりの吸水・保水量が100
g〜600gの範囲で吸水する能力を有することが必要であ
って、かつ抗菌剤を該シート中に含有するものである。
そのシートの構造は、本発明の鮮度保持用シートの使用
形態により種々変更し得るので特に制限はないが、例え
ばダンボール箱に直接葉菜類を箱詰めする場合には、鮮
度保持用シートとダンボールとの接触部分からの水分移
行によるダンボールの強度劣化を防止するため、鮮度保
持用シートのダンボールと接触する層を防水性にするの
が好ましく、また熱可塑性樹脂等からなるトレーを用い
て包装する場合には、トレー外への水分の移行はほとん
ど無いため、防水性は特に必要とされない。Leafy vegetables method of preserving freshness of the present invention, upon its implementation, the sheet is water-water retention, which intended to packaged with leaf vegetables, water-water capacity per sheet 1 m 2 is 100
It is necessary to have the ability to absorb water in the range of g to 600 g, and an antibacterial agent is contained in the sheet.
The structure of the sheet is not particularly limited since it can be variously changed depending on the use form of the freshness retaining sheet of the present invention.For example, when packing leafy vegetables directly in a cardboard box, contact between the freshness retaining sheet and cardboard In order to prevent the deterioration of the strength of the cardboard due to the migration of water from the part, it is preferable to make the layer in contact with the cardboard of the sheet for keeping freshness waterproof, and when packaging using a tray made of thermoplastic resin or the like, Since there is almost no transfer of water to the outside of the tray, waterproofness is not particularly required.

このため、本発明で使用するシートは葉菜類を高湿度
環境下におくため及びシートを使用する際のシートへの
吸水のため少なくとも一方の面が通気性及び透水性を有
するものであれば良く、他方の面は必要に応じて防水性
を付与するものである。For this reason, the sheet used in the present invention may be any as long as at least one surface has air permeability and water permeability for keeping the leafy vegetables under a high humidity environment and for absorbing water when the sheet is used. The other surface is provided with waterproofness as needed.

さらに具体的には、例えば、吸水材と抗菌剤とを含有
する層を中間層として、その上下面を例えば、紙、不織
布、セロハン、微細孔のあいたフィルム等の透水性材料
や、ポリオレフィン、ポリエステル、ポリアミド等から
なるプラスチックフィルム、金属箔等の非透水性の材
料、およびそれらの貼合体からなる被覆材料で被覆し、
一体化したシートを例示でき、このうち少なくとも一方
は透水性の被覆材で被覆することが必要となる。さら
に、この被覆シートの補強のためこの被覆シートをさら
に任意の包装材料、例えば紙、不織布、プラスチックフ
ィルム、金属箔、あるいはそれらの貼合体で被覆後、一
体化することも可能である。この場合においてはシート
の少なくとも一方の面における被覆材と包装材の両者が
通気性及び透水性を有していることが必要となる。More specifically, for example, a layer containing a water-absorbing material and an antibacterial agent as an intermediate layer, the upper and lower surfaces thereof, for example, paper, nonwoven fabric, cellophane, water-permeable material such as a film with fine pores, polyolefin, polyester , A plastic film made of polyamide or the like, a water-impermeable material such as a metal foil, and coated with a coating material made of their bonded body,
An integrated sheet can be exemplified, and at least one of them needs to be covered with a water-permeable covering material. Furthermore, it is also possible to further integrate the coated sheet after covering it with an arbitrary packaging material, for example, paper, nonwoven fabric, plastic film, metal foil, or a bonded body thereof, for reinforcing the coated sheet. In this case, it is necessary that both the covering material and the packaging material on at least one surface of the sheet have air permeability and water permeability.

また、シートの一方の面を防水性にするためには、シ
ートの一方の面を構成する被覆材をプラスチックフィル
ム、金属箔、あるいはそれらの貼合体等の防水性の材料
で構成するか、あるいは透水性の材料に、エクストルー
ジョンコーティング、コーティング等の手段で防水層を
付与するか、あるいはエクストルージョンラミネート、
ドライラミネート等の手段で防水性の材料と貼り合わす
ことにより、防水性を付与してもよい。Further, in order to make one surface of the sheet waterproof, the covering material forming one surface of the sheet is made of a waterproof material such as a plastic film, a metal foil, or a laminate thereof, or A water-permeable material is provided with a waterproof layer by means of extrusion coating, coating or the like, or an extrusion laminate,
Waterproofing may be imparted by laminating with a waterproofing material by means such as dry lamination.

また更に包装材で包装するものにおいてはシートの一
方の面を構成する被覆材および包装材の両者を防水性に
してもよいが、そのうち被覆材あるいは包装材のいずれ
か一方のみを防水性にして構成することも可能である。
包装材を防水性にするには、例えばプラスチックフィル
ム、金属箔、あるいはそれらの貼合体等の防水性の材料
で構成するか、あるいは透水性の材料に、エクストルー
ジョンコーティング、コーティング等の手段で防水層を
付与するか、あるいはエクストルージョンラミネート、
ドライラミネート等の手段で防水性の材料と貼り合わす
ことにより、防水性を付与してもよい。Further, in the case of packaging with a packaging material, both the coating material and the packaging material constituting one surface of the sheet may be made waterproof, but only one of the coating material and the packaging material is made waterproof. It is also possible to configure.
To make the packaging material waterproof, for example, it is made of a waterproof material such as a plastic film, a metal foil, or a laminate thereof, or a waterproof material is waterproofed by means of extrusion coating or coating. A layer or extrusion lamination,
Waterproofing may be imparted by laminating with a waterproofing material by means such as dry lamination.

本発明で使用される吸水材としては、デンプン・アク
リル酸塩のグラフト重合体、カルボキシメチルセルロー
ス架橋体、ビニルアルコール・アクリル酸塩共重合体、
ポリアクリルニトリル加水分解物、架橋ポリアクリル酸
塩、変性ポリビニルアルコール、アクリル酸塩重合体、
アクリル酸塩・アクリルアミド共重合体又はイソブチレ
ン・無水マレイン酸共重合体等が考えられるが、本発明
の鮮度保持用シートとして構成した場合に100g〜600g/m
2の吸水・保水能力を有するものであれば、上記のもの
に限定されるものではない。Examples of the water-absorbing material used in the present invention include starch / acrylate graft polymer, carboxymethylcellulose crosslinked product, vinyl alcohol / acrylate copolymer,
Polyacrylonitrile hydrolyzate, cross-linked polyacrylate, modified polyvinyl alcohol, acrylate polymer,
Acrylates / acrylamide copolymers or isobutylene / maleic anhydride copolymers are conceivable, but when configured as a sheet for keeping freshness of the present invention, 100 g to 600 g / m
It is not limited to the above as long as it has a water absorption / water retention capacity of 2 .

抗菌性物質としては、加工時の安定性、吸水時の溶出
を防止するため、好ましくは担体に担持せしめられた形
態で、前記シートに含有せしめられる。使用する担体と
しては、ゼオライト、活性炭、シリカゲル、活性白土、
酸性白土、アルミナ、活性ボーキサイト、骨炭、モレキ
ュラーシーブ等を挙げることができるが、ゼオライト、
活性炭が安定性の面で好ましい。The antibacterial substance is contained in the sheet, preferably in a form supported on a carrier, in order to prevent stability during processing and prevent elution during water absorption. Carriers used include zeolite, activated carbon, silica gel, activated clay,
Acid clay, alumina, activated bauxite, bone charcoal, molecular sieves, etc.
Activated carbon is preferred in terms of stability.

また、抗菌性物質としては重金属、例えば銀、銅、亜
鉛、錫、鉛、ニッケル、カドミウム、クロム及び水銀等
であって、その中で銀、銅、または亜鉛の１種以上が抗
菌性の点で望ましい。その使用量は抗菌効果を奏するに
必要な量であって、特に限定されない。Antibacterial substances include heavy metals such as silver, copper, zinc, tin, lead, nickel, cadmium, chromium, and mercury, among which one or more of silver, copper, and zinc have antibacterial properties. Is desirable. The amount used is an amount necessary for exhibiting an antibacterial effect, and is not particularly limited.

本発明で使用するシートに吸収させる水分量は、鮮度
保持を目的とする青果物により異なるが、1m2あたり100
g〜600gが望ましく、特に1m2あたり200g〜500gが好まし
い。Amount of water to be absorbed by the sheet to be used in the present invention varies depending on the fruits or vegetables for the purpose of preserving freshness, 1 m 2 per 100
g to 600 g is desirable, and particularly preferably 200 g to 500 g per 1 m 2 .

本発明の葉菜類の鮮度保持方法は、シートに水を散布
して吸水・保水せしめ、該吸水・保水せしめたシートが
葉菜類の上部あるいは下部に接触するようにして、包装
体内に該シートを葉菜類とともに収容して行うものであ
る。この鮮度保持に使用する包装体は段ボール箱、プラ
スチックフィルム、プラスチックトレー、紙カートン等
いずれも使用可能であり、特に限定されるものではな
い。The method for maintaining the freshness of leafy vegetables according to the present invention comprises spraying water on a sheet to absorb and retain water, and contacting the upper or lower part of the leafy vegetable with the water-absorbed and water-retained sheet, so that the sheet and the leafy vegetables are packed in a package. It is to be accommodated. The package used for maintaining the freshness may be any of a cardboard box, a plastic film, a plastic tray, a paper carton, etc., and is not particularly limited.

以下に、本発明の実施例および比較例を記載する。 Hereinafter, Examples and Comparative Examples of the present invention will be described.

実施例１ 秤量25g/m2の紙（メーテル社製MSP25）の上に、抗菌
剤として銀−銅置換ゼオライト（鐘紡社製バクテキラー
BM501A）を1g/m2、高吸水性高分子材料（製鉄化学社
製 アクアキープ10SHP）を5g/m2、バインダー（東レ社
製 ケミットR272S）を1g/m2の量で均一に散布し、当該
混合物層を秤量25g/m2の紙で挟み、加熱エンボスロール
を通し、挟着一体化した。Example 1 Weighing 25 g / mTwoAntibacterial on a piece of paper (MSP25 manufactured by MATEL)
Silver-copper substituted zeolite (Bakte Killer manufactured by Kanebo Co., Ltd.)
BM501A) 1g / mTwo, Super absorbent polymer materials (Steel Chemical Company
Aqua Keep 10SHP) 5g / mTwo, Binder (Toraysha
Chemit R272S) 1g / mTwoSpray evenly with the amount of
Weigh the mixture layer 25g / mTwoSandwiched between paper and heated embossing roll
, And sandwiched and integrated.

上記原紙を320mm×200mmにカッティングし、不織布
（クラレ社製NA240JP2096）に載せ、下部の不織布を原
紙サイドに折り込んだ。さらに上部より不織布を給紙
し、サイド部をギアロールにより、ヒートシールした。
エンド部はシールバーによりヒートシールし、更に全体
を加熱エンボスロールに通し、挟着一体化した。一体化
後、エンド部において330mm×210mmにカッティングし、
水を散布して、吸水・保水量が400g/m2の吸水・保水シ
ートを得た。The base paper was cut into a size of 320 mm × 200 mm, placed on a nonwoven fabric (NA240JP2096, manufactured by Kuraray Co., Ltd.), and the lower nonwoven fabric was folded into the base paper side. Further, the nonwoven fabric was fed from the upper part, and the side part was heat-sealed with a gear roll.
The end portion was heat-sealed with a seal bar, and the whole was further passed through a heated embossing roll to be sandwiched and integrated. After integration, cut to 330mm x 210mm at the end,
Water was sprayed to obtain a water absorption / water retention sheet having a water absorption / water retention amount of 400 g / m 2 .

上記シートをプラスチック製トレーに入った大葉（10
枚１束、10束入り１パック）の下部に敷き、鮮度保持輸
送テストを行った。Large leaves (10
(1 pack of 10 sheets, 1 pack of 10 sheets), and a freshness keeping transport test was performed.

輸送条件は、高知県より東京都まで常温（25〜30℃）
輸送である。Transport conditions are from Kochi Prefecture to Tokyo at room temperature (25-30 ℃)
Transport.

比較例１ トレーのみを使用し、大葉に霧吹きし、実施例１と同
条件で、高知県から東京都まで輸送した。Comparative Example 1 Using only the tray, the large leaves were sprayed and transported from Kochi Prefecture to Tokyo under the same conditions as in Example 1.

比較例２ 実施例と同様の方法により、抗菌剤を含有しない吸水
・保水シートを作製し、実施例１と同条件で高知県から
東京都まで輸送した。Comparative Example 2 A water-absorbing / water-retaining sheet containing no antibacterial agent was prepared in the same manner as in the example, and transported from Kochi prefecture to Tokyo under the same conditions as in example 1.

上記の第１表の如く、本発明で輸送したものは、東京
着後２日経過しても鮮度劣化が全くなく、また、カビの
発生も皆無であった。 As shown in Table 1 above, those transported according to the present invention showed no deterioration in freshness even after 2 days from arrival in Tokyo, and no mold was generated.

〔発明の効果〕〔The invention's effect〕

本発明の葉菜類の鮮度保持方法は、前記実施例及び比
較例の結果からも明らかなように、長時間葉菜類の黄変
及びカビの発生を抑制することができ葉菜類の鮮度保持
に極めて有効なものであった。また、その実施に際して
はシートに単に水を散布すれば良く、従来のように防ば
い剤を添加した水をわざわざ調製する手間もいらず、簡
便であって作業能率の向上にも大いに寄与するものであ
った。As is clear from the results of the above Examples and Comparative Examples, the method for preserving freshness of leafy vegetables of the present invention can suppress yellowing and mold generation of leafy vegetables for a long time and is extremely effective in keeping freshness of leafy vegetables. Met. In addition, water can be simply sprayed on the sheet when carrying out the operation, and there is no need to separately prepare water with a deterring agent as in the past, which is simple and greatly contributes to improvement of work efficiency. Met.

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B65D 81/28 B65D 81/24──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B65D 81/28 B65D 81/24

Claims (10)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】100〜600g/m2吸水・保水能を有する吸水材
と抗菌剤とを含有せしめたシートを用意し、葉菜類を包
装するに際し、包装体内に吸水・保水せしめられた前記
シートを葉菜類とともに収容せしめることを特徴とする
葉菜類の鮮度保持方法。1. A sheet containing a water-absorbing material having an ability to absorb and retain water of 100 to 600 g / m 2 and an antibacterial agent are prepared, and when wrapping leafy vegetables, the sheet absorbed and retained by water in the package is prepared. A method for preserving the freshness of leafy vegetables, characterized by being housed together with the leafy vegetables. 【請求項２】抗菌剤が抗菌性物質を担体に担持せしめた
ものである請求項１記載の葉菜類の鮮度保持方法。2. The method for maintaining the freshness of leafy vegetables according to claim 1, wherein the antibacterial agent is obtained by supporting an antibacterial substance on a carrier. 【請求項３】担体がゼオライトまたは活性炭である請求
項２記載の葉菜類の鮮度保持方法。3. The method for maintaining freshness of leafy vegetables according to claim 2, wherein the carrier is zeolite or activated carbon. 【請求項４】抗菌性物質が重金属である請求項２記載の
葉菜類の鮮度保持方法。4. The method for maintaining freshness of leafy vegetables according to claim 2, wherein the antibacterial substance is a heavy metal. 【請求項５】重金属が銀、銅、亜鉛から選ばれる１種以
上である請求項４記載の葉菜類の鮮度保持方法。5. The method for maintaining freshness of leafy vegetables according to claim 4, wherein the heavy metal is at least one selected from silver, copper and zinc. 【請求項６】シートが吸水材と抗菌剤とを含む層を中間
層としてその上下面を被覆材で被覆し一体化したもので
ある請求項１〜５いずれか記載の葉菜類の鮮度保持方
法。6. A method for preserving freshness of leafy vegetables according to claim 1, wherein the sheet comprises a layer containing a water-absorbing material and an antibacterial agent as an intermediate layer, and the upper and lower surfaces thereof are covered with a covering material and integrated. 【請求項７】シートが更に包装材で被包後一体化したも
のである請求項６記載の葉菜類の鮮度保持方法。7. The method for maintaining freshness of leafy vegetables according to claim 6, wherein the sheet is further integrated after being wrapped with a wrapping material. 【請求項８】シートが少なくとも一方の面における被覆
材または被覆材と包装材が通気性及び透水性を有するも
のである請求項６または７記載の葉菜類の鮮度保持方
法。8. The method for preserving freshness of leafy vegetables according to claim 6, wherein the sheet has a coating material on at least one surface or the coating material and the packaging material have air permeability and water permeability. 【請求項９】シートの一方の面における被覆材および／
または包装材が防水性を有するものである請求項８記載
の葉菜類の鮮度保持方法。9. A coating material on one side of a sheet and / or
9. The method for maintaining freshness of leafy vegetables according to claim 8, wherein the packaging material has waterproofness. 【請求項１０】吸水材が吸水性高分子材料からなる請求
項１〜９いずれか記載の葉菜類の鮮度保持方法。10. The method for maintaining freshness of leafy vegetables according to claim 1, wherein the water-absorbing material comprises a water-absorbing polymer material.
JP27712589A 1989-10-26 1989-10-26 How to keep leafy vegetables fresh Expired - Lifetime JP2840331B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27712589A JP2840331B2 (en) 1989-10-26 1989-10-26 How to keep leafy vegetables fresh

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27712589A JP2840331B2 (en) 1989-10-26 1989-10-26 How to keep leafy vegetables fresh

Publications (2)

Publication Number Publication Date
JPH03148470A JPH03148470A (en) 1991-06-25
JP2840331B2 true JP2840331B2 (en) 1998-12-24

Family

ID=17579142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27712589A Expired - Lifetime JP2840331B2 (en) 1989-10-26 1989-10-26 How to keep leafy vegetables fresh

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Country Link
JP (1) JP2840331B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3121503B2 (en) 1994-10-18 2001-01-09 レンゴー株式会社 Antibacterial agent
EP3022127B1 (en) 2013-07-16 2021-04-07 Graphic Packaging International, LLC Antimicrobial packaging material

Also Published As

Publication number Publication date
JPH03148470A (en) 1991-06-25

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