JP2980687B2 - Water-absorbing paper or non-woven fabric for preventing discoloration of cut surface of lettuce - Google Patents
Water-absorbing paper or non-woven fabric for preventing discoloration of cut surface of lettuceInfo
- Publication number
- JP2980687B2 JP2980687B2 JP8502997A JP50299796A JP2980687B2 JP 2980687 B2 JP2980687 B2 JP 2980687B2 JP 8502997 A JP8502997 A JP 8502997A JP 50299796 A JP50299796 A JP 50299796A JP 2980687 B2 JP2980687 B2 JP 2980687B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- lettuce
- absorbing paper
- nonwoven fabric
- cut surface
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 技術分野 本発明はレタスの切断面の変色防止用吸水性紙又は不
織布及び変色防止方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a water-absorbing paper or nonwoven fabric for preventing discoloration of cut surfaces of lettuce and a method for preventing discoloration.
背景技術 これまで青果物の鮮度を保持或いはかびの発生を防止
するために種々の方法が検討されている。例えば、特開
平２−303469号公報にはわさび又はからしの加工品を保
存物と共存させる方法が開示されている。特開昭58−51
842号公報には増容剤を含む、リンゴ酸、酒石酸、クエ
ン酸などの有機酸に、酸化物、過酸化物、多糖類、糊、
金属塩、ホルムアルデヒドやウルトラピン等を混合し
た、粉末、水溶液、グライコール液やアルコール液を青
果物の根部切口や切支枝部に微量塗布し、ポリスチレン
フィルム等で包着する青果物の鮮度保持方法が開示され
ている。特開昭64−6034号公報には５−ハイドロオキシ
−２−ハイドロオキシメチル−γ−ピロンを塗布したプ
ラスチックシート（又はフィルム）で青果物を包装する
青果物、切花の鮮度保持方法が開示されている。BACKGROUND ART Various methods have been studied so far to maintain the freshness of fruits and vegetables or to prevent the occurrence of mold. For example, JP-A-2-303469 discloses a method in which a processed product of wasabi or mustard coexists with a preserved material. JP-A-58-51
No. 842 contains a bulking agent, malic acid, tartaric acid, organic acids such as citric acid, oxides, peroxides, polysaccharides, paste,
A method of preserving the freshness of fruits and vegetables by applying a small amount of powder, aqueous solution, glycol solution or alcohol solution mixed with metal salt, formaldehyde, ultrapine, etc. It has been disclosed. JP-A-64-6034 discloses a method for preserving the freshness of fruits and vegetables, in which fruits and vegetables are packaged in a plastic sheet (or film) coated with 5-hydroxy-2-hydroxymethyl-γ-pyrone. .
しかしながら、上記の従来方法ではレタスの切断面の
変色を防止するのに充分ではない。本発明はレタスの切
断面における変色を改善することを目的とする。However, the above-mentioned conventional method is not enough to prevent discoloration of the cut surface of the lettuce. An object of the present invention is to improve the discoloration of a cut surface of a lettuce.
発明の開示 本発明者らは上記従来技術の欠点を克服するために鋭
意研究を行った結果、本発明に到達した。DISCLOSURE OF THE INVENTION The present inventors have made intensive studies to overcome the above-mentioned drawbacks of the prior art, and have reached the present invention.
すなわち本発明は５−ハイドロオキシ−２−ハイドロ
オキシメチル−γ−ピロンを含有する変色防止用吸水性
紙又は不織布及びそれを用いた変色防止方法を提供す
る。That is, the present invention provides a water-absorbing paper or nonwoven fabric for discoloration prevention containing 5-hydroxy-2-hydroxymethyl-γ-pyrone and a discoloration prevention method using the same.
本発明で用いられる５−ハイドロオキシ−２−ハイド
ロオキシメチル−γ−ピロン（以下本化合物と略記す
る）は下記（１）式で示される化合物であって、麹酸と
も呼ばれている。本化合物は微生物によっても各種炭水
化合物から生成されるが、市販品があるのでこれを使用
すればよい。5-Hydroxy-2-hydroxymethyl-γ-pyrone (hereinafter abbreviated as the present compound) used in the present invention is a compound represented by the following formula (1), and is also called kojic acid. The present compound is also produced from various carbohydrate compounds by microorganisms, but commercially available products may be used.
本発明において吸水性紙又は不織布とは、後で説明す
る測定法による吸水率が60％以上の紙又は不織布をい
う。好ましくは、吸水率が80％以上の紙又は不織布であ
る。 In the present invention, the water-absorbing paper or nonwoven fabric refers to a paper or nonwoven fabric having a water absorption of 60% or more according to a measurement method described later. Preferably, it is paper or nonwoven fabric having a water absorption of 80% or more.
本発明においては上記本化合物が吸水性紙又は不織布
に含有されていることが必要である。吸水性紙又は不織
布に含有されることによって、上記本化合物がプラスチ
ックフィルムやシートなどの吸水率が60％未満のものに
含有される場合や上記本化合物を直接レタスに塗布する
場合に比べて、葉のしおれ、腐敗の防止等の鮮度保持効
果を維持あるい向上させ、さらに切断面における変色を
防止することができる。かかる変色防止効果が生ずる理
由は定かではないが、５−ハイドロオキシ−２−ハイド
ロオキシメチル−γ−ピロンの抗菌力及び吸水性紙又は
不織布による褐変酵素の吸収除去作用の相乗効果による
ものと推定される。In the present invention, the present compound needs to be contained in water-absorbing paper or nonwoven fabric. By being contained in water-absorbing paper or nonwoven fabric, compared to the case where the present compound is contained in a plastic film or sheet having a water absorption of less than 60% or the case where the present compound is directly applied to lettuce, The effect of maintaining freshness such as leaf wilting and rot prevention can be maintained or improved, and further, discoloration on the cut surface can be prevented. The reason why such a discoloration preventing effect occurs is not clear, but is presumed to be due to the synergistic effect of the antibacterial activity of 5-hydroxy-2-hydroxymethyl-γ-pyrone and the effect of absorbing and removing browning enzymes by water-absorbing paper or nonwoven fabric. Is done.
本化合物の含有量は8g/m2未満が好ましく、0.05〜5g/
m2がさらに好ましい。The content of the compound is preferably less than 8g / m 2, 0.05~5g /
m 2 is more preferred.
本発明に用いられる不織布は綿、レーヨン、アセテー
ト、ナイロン、ポリエステル等の短繊維又は長繊維から
なるもので本発明の吸水率を有するものであれば糸密
度、製造方法を問わない。The nonwoven fabric used in the present invention is made of short fibers or long fibers such as cotton, rayon, acetate, nylon, polyester and the like, regardless of the yarn density and production method as long as it has the water absorption of the present invention.
本化合物を吸水性紙又は不織布に含有させる方法とし
ては、本化合物を、水、アルコール、酢酸エステル等の
ような溶媒に溶解又は分散して塗布する方法が好まし
い。また塗布は刷毛等による通常の塗布の他、吸水物を
該溶液中に浸漬するか、又は液中に通過させて付着させ
る方法も採用できる。As a method for incorporating the present compound into water-absorbing paper or nonwoven fabric, a method in which the present compound is dissolved or dispersed in a solvent such as water, alcohol, acetate, or the like and applied is preferable. In addition to the usual coating method using a brush or the like, a method of immersing a water-absorbing material in the solution or passing the water-absorbing material through the solution to adhere the solution can also be adopted.
鮮度保持の効果を一層向上させるため、５−ハイドロ
オキシ−２−ハイドロオキシメチル−γ−ピロンに加え
て他の有機酸及び／又は保水剤を吸水性紙又は不織布に
含有させることが好ましい。含有方法は、本化合物を溶
解又は分散させた溶液に他の有機酸及び／又は保水剤を
添加すればいい。In order to further improve the effect of maintaining freshness, it is preferable to add other organic acids and / or water retention agents to the water-absorbing paper or nonwoven fabric in addition to 5-hydroxy-2-hydroxymethyl-γ-pyrone. The containing method may be such that another organic acid and / or a water retention agent are added to a solution in which the present compound is dissolved or dispersed.
ここで、他の有機酸としては炭素数２〜10のものが用
いられる。有機酸は食品衛生上の観点から食品添加物の
中から選ばれるのが望ましく、例えばアジピン酸、クエ
ン酸、酒石酸、ビタミンＣなどが好ましい。他の有機酸
の含有量は0.03〜8g/m2が好ましく、さらに好ましく
は、0.1〜5g/m2である。Here, an organic acid having 2 to 10 carbon atoms is used. The organic acid is preferably selected from food additives from the viewpoint of food hygiene, and for example, adipic acid, citric acid, tartaric acid, vitamin C and the like are preferable. The content of other organic acids is preferably from 0.03~8g / m 2, more preferably 0.1-5 g / m 2.
保水剤としては塩化カルシウム、塩化マグネシウム、
食塩などの吸湿性のある塩、デキストリンなどが用いら
れる。吸水性紙又は不織布への固着性の点から保水剤と
してはデキストリンが特に好ましい。保水剤の含有量は
0.03〜8g/m2が好ましく、さらに好ましくは、0.1〜5g/m
2である。Calcium chloride, magnesium chloride,
A hygroscopic salt such as salt, dextrin, or the like is used. Dextrin is particularly preferred as the water retention agent from the viewpoint of sticking to water-absorbing paper or nonwoven fabric. The content of water retention agent is
Preferably 0.03~8g / m 2, more preferably, 0.1-5 g / m
2
本発明の吸水性紙又は不織布を用いてレタスの切断面
の変色を防止する方法としては、切断面が覆われるよう
に吸水性紙又は不織布を実質的に接触させる方法が最も
効率的な方法である。実質的に接触させるとは変色防止
効果がえられる程度に切断面を覆うか、又は切断面の全
面又は一部に接触させることをいう。As a method for preventing discoloration of the cut surface of the lettuce using the water-absorbent paper or nonwoven fabric of the present invention, a method of substantially contacting the water-absorbent paper or nonwoven fabric so that the cut surface is covered is the most efficient method. is there. The term “substantially contact” means that the cut surface is covered or the whole cut surface is brought into contact with the cut surface to the extent that the discoloration preventing effect is obtained.
発明を実施するための最良の形態 （実施例） 以下、実施例を用いて本発明を具体的に説明する。BEST MODE FOR CARRYING OUT THE INVENTION (Examples) Hereinafter, the present invention will be specifically described using examples.
吸水率は以下の方法により測定する。 The water absorption is measured by the following method.
20cm×25cm角片の吸水性紙又は不織布を20℃の水に１
分間浸漬した後、取り出し、表面の遊離水を除去する。
吸水率は次の式より求める。20cm x 25cm square piece of water-absorbing paper or non-woven fabric in 20 ℃ water
After immersion for a minute, remove and remove free water on the surface.
The water absorption is determined by the following equation.
吸水率＝（Ｂ−Ａ）×100/A A:吸水前の吸水物の重さ（ｇ） B:吸水後の吸水物の重さ（ｇ） （実施例１〜４および比較例１〜３） 表１に示す化合物の水溶液を該化合物が各々に示す量
となるように塗布した紙、レーヨン不織布又はプラスチ
ックフィルムをレタスの切口をおおって貼り、ポリスチ
レンフィルムで包装し25℃、相対湿度70％に放置してレ
タスの切口の鮮度の経時変化を評価した。その結果を表
１に示す。なお、評価は各々10個のサンプルについて下
記基準で行ったものの平均値である。Water absorption = (BA) × 100 / AA: Weight of water-absorbing material before water absorption (g) B: Weight of water-absorbing material after water absorption (g) (Examples 1-4 and Comparative Examples 1-3) A paper, rayon non-woven fabric or plastic film coated with an aqueous solution of the compound shown in Table 1 so that the amount of the compound is as shown in each of the above is applied over a cutout of lettuce, packaged with a polystyrene film, and kept at 25 ° C. and 70% relative humidity. The lettuce was allowed to stand, and the change over time in the freshness of the cut was evaluated. Table 1 shows the results. The evaluation is the average value of the results obtained for each of the ten samples based on the following criteria.
（評価基準） 5:包装時と変わらず 4:包装時とほとんど変わらず 3:少し変化しているが、市場性十分あり 2:明らかに変化し、市場性の限界ぎりぎり 1:著しく変化し、市場性を喪失 産業上の利用分野 本発明は、従来技術に比べ、レタスの葉のしおれ、腐
敗の防止等の鮮度保持効果を維持あるいは向上させ、さ
らに切断面における変色を防止するという効果を有す
る。(Evaluation criteria) 5: Same as when packaging 4: Almost same as when packaging 3: Slightly changed, but with sufficient marketability 2: Clearly changed, at the very limit of marketability 1: Remarkably changed, The present invention has the effect of maintaining or improving the freshness maintaining effect such as wilting of lettuce leaves and preventing rot, and preventing discoloration on a cut surface, as compared with the prior art. .
フロントページの続き (56)参考文献 特開 昭62−198372（ＪＰ，Ａ) 特開 昭61−108359（ＪＰ，Ａ) 特開 昭64−34241（ＪＰ，Ａ) 特開 平２−273140（ＪＰ，Ａ) 特開 平５−153906（ＪＰ，Ａ) 特開 昭64−6034（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) A01N 3/00 A23B 7/00 A23L 3/34 B65D 81/28 Continuation of front page (56) References JP-A-62-198372 (JP, A) JP-A-61-108359 (JP, A) JP-A-64-34241 (JP, A) JP-A-2-273140 (JP) JP-A-5-153906 (JP, A) JP-A-64-6034 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) A01N 3/00 A23B 7/00 A23L 3/34 B65D 81/28
Claims (3)
メチル−γ−ピロンを0.05〜5g/m2含有し、かつ吸水率
が60％以上であるレタスの切断面の変色防止用吸水紙又
は不織布。1. A water-absorbing paper or nonwoven fabric for preventing discoloration of cut surfaces of lettuce containing 5-hydroxy-2-hydroxymethyl-γ-pyrone in an amount of 0.05 to 5 g / m 2 and a water absorption of 60% or more. .
水剤を含有する請求の範囲第１項の吸水性紙又は不織
布。2. The water-absorbing paper or nonwoven fabric according to claim 1, further comprising an organic acid having 2 to 10 carbon atoms and / or a water retention agent.
メチル−γ−ピロンを含有する吸水性紙又は不織布をレ
タスの切断面に実質的に接触させるレタスの切断面の変
色防止方法。3. A method for preventing discoloration of a cut face of a lettuce, wherein a water-absorbing paper or nonwoven fabric containing 5-hydroxy-2-hydroxymethyl-γ-pyrone is substantially brought into contact with the cut face of the lettuce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8502997A JP2980687B2 (en) | 1994-06-27 | 1995-06-12 | Water-absorbing paper or non-woven fabric for preventing discoloration of cut surface of lettuce |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14456194 | 1994-06-27 | ||
| JP6-144561 | 1994-06-27 | ||
| JP8502997A JP2980687B2 (en) | 1994-06-27 | 1995-06-12 | Water-absorbing paper or non-woven fabric for preventing discoloration of cut surface of lettuce |
| PCT/JP1995/001170 WO1996000004A1 (en) | 1994-06-27 | 1995-06-12 | Water-absorbent sheet for preventing discoloration of vegetable, fruit or cut flower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2980687B2 true JP2980687B2 (en) | 1999-11-22 |
Family
ID=26475941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8502997A Expired - Fee Related JP2980687B2 (en) | 1994-06-27 | 1995-06-12 | Water-absorbing paper or non-woven fabric for preventing discoloration of cut surface of lettuce |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2980687B2 (en) |
-
1995
- 1995-06-12 JP JP8502997A patent/JP2980687B2/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3270559B2 (en) | Composition containing allyl isothiocyanate and use thereof | |
| US5376391A (en) | Method of increasing the stability of fruits, vegetables or fungi and composition thereof | |
| EP0350275B1 (en) | Preservative composition for wet wipes | |
| US4148891A (en) | Antifungal preparations | |
| US5814568A (en) | Water-absorbent paper of nonwoven fabic for preventing discoloration of a lettuce stem cut surface | |
| JP2980687B2 (en) | Water-absorbing paper or non-woven fabric for preventing discoloration of cut surface of lettuce | |
| JPH0416173A (en) | Freshness-keeping agent for vegetable and fruit | |
| EP0030226B1 (en) | A composition containing a thixotropic aluminium derivative for use in agricultural application, a process for producing it and a process for the protection of agricultural products and agricultural products obtained thereby | |
| HU223971B1 (en) | Antifungal compositions and use thereof | |
| JP3269950B2 (en) | Water-absorbing cut surface contact paper for maintaining freshness | |
| JPH02222645A (en) | Freshness retaining agent for vegetables and fruits | |
| JPH0697943B2 (en) | How to prevent discoloration of fruits | |
| US2567010A (en) | Fungistatic wrapper | |
| MXPA96006263A (en) | Absorbent paper of water not texted to prevent the discoloration of a cutted surface of lech stem | |
| JP4230755B2 (en) | Freshness preservation sheet | |
| JP2730497B2 (en) | Freshness preservation method | |
| US3041184A (en) | Meat wrapper containing antibiotic | |
| US2474228A (en) | Making proteinaceous and fatty foods resistant to microorganisms | |
| JPH02117343A (en) | Freshness preservative of vegetables and fruits | |
| JPS5864966A (en) | Resin packing bag for antisepsis and mold prevention | |
| JPS6136912B2 (en) | ||
| JP3576505B2 (en) | Freshness retention sheet | |
| JPH0453887B2 (en) | ||
| US3563770A (en) | Preservation of fish | |
| JPH0812502A (en) | Treating liquid for keeping freshness of vegetable, fruit and cut flower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |