JP6728105B2 - Package of fruits and vegetables - Google Patents
Package of fruits and vegetables Download PDFInfo
- Publication number
- JP6728105B2 JP6728105B2 JP2017104858A JP2017104858A JP6728105B2 JP 6728105 B2 JP6728105 B2 JP 6728105B2 JP 2017104858 A JP2017104858 A JP 2017104858A JP 2017104858 A JP2017104858 A JP 2017104858A JP 6728105 B2 JP6728105 B2 JP 6728105B2
- Authority
- JP
- Japan
- Prior art keywords
- package
- film
- packaging
- fruits
- vegetables
- 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.)
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Landscapes
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
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Description
本発明は、食用キノコを含む青果物の鮮度保持性能に優れた包装体に関し、より具体的には、高分子フィルムを有する包装容器内に食用キノコを含む青果物を収納してなる包装体であって、包装体の封止後に特定の内部雰囲気を有し得る包装体に関する。 The present invention relates to a package excellent in freshness retention performance of fruits and vegetables containing edible mushrooms, and more specifically, a package containing fruits and vegetables containing edible mushrooms in a packaging container having a polymer film. , A package that can have a specific internal atmosphere after the package is sealed.
シメジ等の食用キノコを含む青果物の鮮度を長時間保つため、望ましい酸素濃度雰囲気を形成して収穫後の青果物の貯蔵・流通を行うことが従来から行われている。特に、食用キノコは、収穫後も活発に呼吸作用を持続するため、かかる呼吸作用のメカニズムを十分に検討した上で、貯蔵・流通過程における品質劣化を防止することが重要である。かかる品質劣化を防止し食用キノコの鮮度を保つ方法として、キノコを密封した有孔合成樹脂フィルムからなるキノコ入り包装体を用いることが種々提案されている。 In order to maintain the freshness of fruits and vegetables containing edible mushrooms such as shimeji mushrooms for a long time, it has been conventionally practiced to store and distribute the fruits and vegetables after harvesting by forming a desired oxygen concentration atmosphere. In particular, since edible mushrooms actively maintain their respiratory action even after harvesting, it is important to thoroughly study the mechanism of such respiratory action and prevent quality deterioration during the storage/distribution process. As a method of preventing such quality deterioration and maintaining the freshness of edible mushrooms, various proposals have been made to use a package containing mushrooms which is made of a synthetic resin film having a hole and in which mushrooms are sealed.
例えば、特許文献1には、有孔の開口面積比率が5×10−5〜7×10−4%であり、きのこ100g当たりの袋内表面積が400〜1000cm2であることを特徴とする有孔合成樹脂フィルムからなるきのこ入り包装体が開示されている。さらに特許文献1には、その孔の平均孔径が20μ〜150μであり、その孔の個数が1包装体当たり複数個であることが好ましいことが記載されている(段落[0005])。
また、特許文献2には、ブナシメジ等のシメジ類を合成樹脂フィルム製袋内に封入してなるシメジ類のキノコ包装体において、袋に互いに間隔を隔てて複数の微細孔を開けて袋内外の微量の通気性をもたせ、袋表面積に対する面積比率が4.60×10−5%以下となるように、直径100μの微細孔を1〜3個開けるのが好ましいことが記載されている(段落[0008][0009])。
For example, Patent Literature 1 is characterized in that the opening area ratio of perforations is 5×10 −5 to 7×10 −4 %, and the surface area in the bag per 100 g of mushrooms is 400 to 1000 cm 2. A package containing mushrooms made of a synthetic resin film having a hole is disclosed. Furthermore, Patent Document 1 describes that the average pore diameter of the holes is preferably 20 μ to 150 μ, and the number of the holes is preferably plural per package (paragraph [0005]).
Further, in Patent Document 2, in a mushroom package of shimeji mushrooms in which shimeji mushrooms such as beech shimeji are enclosed in a bag made of a synthetic resin film, a plurality of fine holes are formed in the bag at intervals to separate the inside and outside of the bag. It is described that it is preferable to form 1 to 3 micropores having a diameter of 100 μm so that a small amount of air permeability is provided and the area ratio to the bag surface area is 4.60×10 −5 % or less (paragraph [ [0008][0009]).
しかしながら、本発明者らの検討によれば、そのような有孔合成樹脂フィルムからなるキノコ入り包装体において、包装体の封止後から23℃で保管した場合に、色相、萎え、及びドリップの点で顕著に品質劣化が生じ得ることが判明していた。また、このような品質劣化は、たとえ包装体の封止後から5℃で冷蔵保管を開始した場合であっても生じ得ることが判明していたため、生鮮食品として食され、且つその流通が生きた状態で行われている食用キノコの取り扱いにおいて、食の安全の観点から、かかる品質劣化の課題の解決が急務となっていた。本発明は、かかる従来技術の限界に鑑み、包装容器内に食用キノコを含む青果物を収納してなる包装体であって、当該包装体内の食用キノコに特徴的且つ経時的な品質劣化を抑制し得る、該青果物の鮮度保持機能に優れた包装体を提供することを課題とする。 However, according to the study by the present inventors, in a mushroom-containing package made of such a perforated synthetic resin film, when stored at 23° C. after sealing the package, the hue, shrinkage, and drip In this respect, it has been found that quality deterioration can occur significantly. In addition, it has been found that such quality deterioration can occur even when cold storage is started at 5°C after the packaging is sealed, and therefore it is eaten as fresh food and its distribution is live. From the viewpoint of food safety, it has become an urgent task to solve the problem of such quality deterioration in the handling of edible mushrooms which is carried out under the condition. In view of the limitations of the conventional technique, the present invention is a package in which fruits and vegetables containing edible mushrooms are stored in a packaging container, which is characteristic of the edible mushrooms in the package and suppresses deterioration over time. It is an object of the present invention to provide a package which is excellent in the function of retaining the freshness of the fruits and vegetables.
本発明者らは、種々の観点から多数の試行錯誤を行い鋭意検討した結果、従来技術では抑制できなかった上記の品質劣化を、高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、包装体の封止後に特定の内部雰囲気を有し得る包装体を用いることにより解決可能であることを見出し、本発明に到達した。
すなわち、本発明の要旨は以下に存する。
[1]
高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、
5℃で冷蔵保管した場合に、
包装体の封止後11日から包装体の封止後32日までの少なくとも一部の期間で、内部二酸化炭素濃度が10%以上25%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が15%以上である、包装体。
[2]
高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、
5℃で冷蔵保管した場合に、
包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度がいずれも10%以上25%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が15%以上である、[1]に記載の包装体。
[3]
前記食用キノコの色相変化、萎え、ドリップ、及びカビのうち少なくともいずれか又は全部の発生を、包装体の封止後32日以上抑制することができる、[1]又は[2]に記載の包装体。
[4]
前記包装体の封止後5日から前記包装体の封止後11日にかけて内部酸素濃度が、0.0〜3.0%である、[1]から[3]のいずれか一項に記載の包装体。
[5]
前記包装容器内に窒素が封入されている、[1]から[4]のいずれか一項に記載の包装体。
[6]
前記高分子フィルムの酸素透過度が、20℃、90%RHにおいて、1100cc/m2・day・atm以下である、[1]から[5]のいずれか一項に記載の包装体。
[7]
前記高分子フィルムの厚みが、15から45μmである、[1]から[6]のいずれか一項に記載の包装体。
[8]
前記高分子フィルムが、延伸ポリプロピレンフィルム、ポリエチレン系フィルム、又は延伸フィルムとポリエチレン系フィルムとの積層体である、[1]から[7]のいずれか一項に記載の包装体。
[9]
前記高分子フィルムが、少なくとも1種の抗菌剤を含有し、又は少なくとも1種の抗菌剤が塗布されている、[1]から[8]のいずれか一項に記載の包装体。
[10]
更に吸湿剤、及び/又は抗菌剤を収納してなる、[1]から[9]のいずれか一項に記載の青果物鮮度保持用包装体。
[11]
前記食用キノコがシメジである、[1]から[10]のいずれか一項に記載の青果物鮮度保持用包装体。
The present inventors have conducted a number of trials and errors from various viewpoints, and as a result of extensive investigations, the above-mentioned quality deterioration, which could not be suppressed by the conventional technology, is caused by vegetables and fruits containing edible mushrooms in a packaging container containing a polymer film. The present invention has been completed, and it was found that the problem can be solved by using a packaging body containing the above, which can have a specific internal atmosphere after the packaging body is sealed.
That is, the gist of the present invention is as follows.
[1]
A package in which fruits and vegetables containing edible mushrooms are stored in a packaging container containing a polymer film,
When stored refrigerated at 5℃,
The internal carbon dioxide concentration is 10% or more and 25% or less for at least a part of the period from 11 days after the packaging is sealed to 32 days after the packaging is sealed, and the packaging is performed from 11 days after the packaging is sealed. A package in which the internal carbon dioxide concentration decreases over 32 days after the body is sealed and the absolute value of the change rate is 15% or more.
[2]
A package in which fruits and vegetables containing edible mushrooms are stored in a packaging container containing a polymer film,
When stored refrigerated at 5℃,
The internal carbon dioxide concentration on both the 11th day after the sealing of the package and the 32nd day after the sealing of the package is 10% or more and 25% or less. The package according to [1], wherein the internal carbon dioxide concentration decreases over the day, and the absolute value of the change rate is 15% or more.
[3]
The packaging according to [1] or [2], wherein generation of at least one or all of hue change, withering, drip, and mold of the edible mushroom can be suppressed for 32 days or more after the packaging body is sealed. body.
[4]
The internal oxygen concentration is 0.0 to 3.0% from 5 days after the packaging is sealed to 11 days after the packaging is sealed, according to any one of [1] to [3]. Packaging.
[5]
The package according to any one of [1] to [4], wherein nitrogen is enclosed in the packaging container.
[6]
The package according to any one of [1] to [5], wherein the oxygen permeability of the polymer film is 1100 cc/m 2 ·day·atm or less at 20° C. and 90% RH.
[7]
The package according to any one of [1] to [6], wherein the polymer film has a thickness of 15 to 45 μm.
[8]
The package according to any one of [1] to [7], wherein the polymer film is a stretched polypropylene film, a polyethylene film, or a laminate of a stretched film and a polyethylene film.
[9]
The package according to any one of [1] to [8], wherein the polymer film contains at least one antibacterial agent or is coated with at least one antibacterial agent.
[10]
The package for keeping freshness of fruits and vegetables according to any one of [1] to [9], which further contains a moisture absorbent and/or an antibacterial agent.
[11]
The package for freshness preservation of fruits and vegetables according to any one of [1] to [10], wherein the edible mushroom is shimeji mushroom.
本発明の好ましい一実施形態では、高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、5℃で冷蔵保管した場合に、包装体の封止後11日から包装体の封止後32日までの少なくとも一部の期間で、内部二酸化炭素濃度が5%以上40%以下であり、好ましくは8%以上35%以下であり、より好ましくは10%以上30%以下であり、さらにより好ましくは15%以上25%以下であり、なお一層好ましくは18%以上25%以下であるが、いずれも10%以上25%以下である場合も好適な態様である。また、包装体の封止後から11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が10%以上であり、好ましくは15%以上であり、より好ましくは18%以上であり、さらに好ましくは20%以上である。ここで上記変化率は、包装体の封止後11日後と包装体の封止後32日後との内部二酸化炭素濃度の差を、包装体の封止後11日後と包装体の封止後32日後との内部二酸化炭素濃度の平均値で除することによって計算される。
本発明の好ましい一実施形態では、高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、5℃で冷蔵保管した場合に、包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度が、いずれも5%以上40%以下であり、好ましくはいずれも8%以上35%以下であり、より好ましくはいずれも15%以上30%以下であり、さらに好ましくはいずれも15%以上25%以下であり、なお一層好ましくはいずれも18%以上25%以下であるが、いずれも10%以上25%以下である場合も好適な態様である。これらの内部二酸化炭素濃度は、包装体の封止後11日から包装体の封止後32日にかけて、上記範囲にあることが最も好ましい。
また、本発明の好ましい一実施形態では、高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、5℃で冷蔵保管した場合に、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が10%以上であり、好ましくは15%以上であり、より好ましくは18%以上であり、さらに好ましくは20%以上である。ここで上記変化率は、包装体の封止後11日後と包装体の封止後32日後との内部二酸化炭素濃度の差を、包装体の封止後11日後と包装体の封止後32日後との内部二酸化炭素濃度の平均値で除することによって計算される。
In a preferred embodiment of the present invention, a package comprising a polymer film-containing packaging container containing fruits and vegetables containing edible mushrooms, which seals the package when refrigerated at 5°C. The internal carbon dioxide concentration is 5% or more and 40% or less, preferably 8% or more and 35% or less, and more preferably 10% in at least a part of the period from the 11th day to the 32nd day after the package is sealed. % Or more and 30% or less, still more preferably 15% or more and 25% or less, and still more preferably 18% or more and 25% or less, and both are also preferably 10% or more and 25% or less. Is. In addition, the internal carbon dioxide concentration decreases from 11 days after the packaging is sealed to 32 days after the packaging is sealed, and the absolute value of the change rate is 10% or more, preferably 15% or more. , More preferably 18% or more, still more preferably 20% or more. Here, the above-mentioned rate of change is the difference in the internal carbon dioxide concentration between 11 days after the sealing of the package and 32 days after the sealing of the package, which is 32 days after the sealing of the package and 32 days after the sealing of the package. Calculated by dividing by the mean value of the internal carbon dioxide concentration after and after.
In a preferred embodiment of the present invention, a package comprising a polymer film-containing packaging container containing fruits and vegetables containing edible mushrooms, which seals the package when refrigerated at 5°C. After 11 days and 32 days after sealing the package, the internal carbon dioxide concentration was 5% or more and 40% or less, preferably 8% or more and 35% or less, and more preferably 15%. 30% or less, more preferably 15% or more and 25% or less, still more preferably 18% or more and 25% or less, and preferably 10% or more and 25% or less It is a mode. Most preferably, these internal carbon dioxide concentrations are in the above range from 11 days after the packaging is sealed to 32 days after the packaging is sealed.
Further, in a preferred embodiment of the present invention, a package in which fruits and vegetables containing edible mushrooms are stored in a packaging container containing a polymer film, which is The internal carbon dioxide concentration decreases from 11 days after the sealing to 32 days after the packaging is sealed, and the absolute value of the change rate is 10% or more, preferably 15% or more, and more preferably 18%. It is above, and more preferably 20% or more. Here, the above-mentioned rate of change is the difference in the internal carbon dioxide concentration between 11 days after the sealing of the package and 32 days after the sealing of the package, which is 32 days after the sealing of the package and 32 days after the sealing of the package. Calculated by dividing by the mean value of the internal carbon dioxide concentration after and after.
本発明の好ましい一実施形態では、前記食用キノコの色相変化、萎え、ドリップ、及び/又はカビのうち少なくともいずれか又は全部の発生を、包装体の封止後、11日以上、好ましくは24日以上、より好ましくは32日以上、さらに好ましくは40日以上抑制することができる。 In a preferred embodiment of the present invention, the occurrence of at least one or all of hue change, wilting, drip, and/or mold of the edible mushroom is 11 days or more, preferably 24 days after the packaging is sealed. As described above, it can be suppressed more preferably for 32 days or more, further preferably for 40 days or more.
本発明の好ましい一実施形態では、前記包装体の封止後5日から前記包装体の封止後11日にかけて内部酸素濃度が、下限値として0.0%であり、上限値として4.0%、好ましくは3.0%、より好ましくは2.5%、さらに好ましくは2.0%である。 In a preferred embodiment of the present invention, the internal oxygen concentration is 0.0% as a lower limit and 4.0 as an upper limit from 5 days after the packaging is sealed to 11 days after the packaging is sealed. %, preferably 3.0%, more preferably 2.5%, even more preferably 2.0%.
本発明の好ましい一実施形態では、前記高分子フィルムの酸素透過度が、20℃、90%RHにおいて、下限値として、好ましくは200cc/m2・day・atm、より好ましくは400cc/m2・day・atm、さらに好ましくは500cc/m2・day・atmであり、上限値として、好ましくは2000cc/m2・day・atm、より好ましくは1500cc/m2・day・atm、さらに好ましくは1200cc/m2・day・atm、さらにより好ましくは1100cc/m2・day・atm、さらにより一層好ましくは1000cc/m2・day・atm、なお一層好ましくは900cc/m2・day・atm、最も好ましくは800cc/m2・day・atmである。 In a preferred embodiment of the present invention, the oxygen permeability of the polymer film at 20° C. and 90% RH is, as a lower limit value, preferably 200 cc/m 2 ·day·atm, more preferably 400 cc/m 2 ·. day·atm, more preferably 500 cc/m 2 ·day·atm, and the upper limit value is preferably 2000 cc/m 2 ·day·atm, more preferably 1500 cc/m 2 ·day·atm, further preferably 1200 cc/ m 2 ·day·atm, even more preferably 1100 cc/m 2 ·day·atm, even more preferably 1000 cc/m 2 ·day·atm, even more preferably 900 cc/m 2 ·day·atm, most preferably It is 800 cc/m 2 ·day·atm.
上述したような本発明の好ましい各実施形態がもたらす技術的効果は、後述の試験例によって実証されている。 The technical effects brought about by the respective preferred embodiments of the present invention as described above are demonstrated by the test examples described later.
本発明によれば、シメジ等の食用キノコに特徴的且つ経時的な品質劣化、すなわち、色相変化、萎え、及びドリップの発生を、包装体の封止後、長期間にわたって抑制することが可能となる。 ADVANTAGE OF THE INVENTION According to this invention, characteristic deterioration with respect to edible mushrooms, such as shimeji mushrooms, and quality deterioration over time, namely, a hue change, withering, and generation|occurrence|production of drip can be suppressed over a long period after sealing a package. Become.
以下、本発明を実施するための形態を説明する。
本発明は、 高分子フィルムを含んでなる包装容器内に食用キノコを含む青果物を収納してなる包装体であって、
5℃で冷蔵保管した場合に、
包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度がいずれも15%以上25%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が15%以上である、包装体、である。すなわち、本発明の包装体は、少なくとも、包装容器と、そこに収納された青果物と、を有するものである。
Hereinafter, modes for carrying out the present invention will be described.
The present invention is a package in which fruits and vegetables containing edible mushrooms are stored in a packaging container comprising a polymer film,
When stored refrigerated at 5℃,
The internal carbon dioxide concentration on both the 11th day after the sealing of the package and the 32nd day after the sealing of the package is 15% or more and 25% or less. A package in which the internal carbon dioxide concentration decreases over the day and the absolute value of the change rate is 15% or more. That is, the package of the present invention has at least a packaging container and fruits and vegetables stored therein.
包装容器
本発明の包装体を構成する包装容器は、高分子フィルムを含んでなるものである。ここで「高分子フィルムを含んでなる」とは、包装容器の全部が高分子フィルムで構成されている場合、及び蓋材等包装容器の一部が高分子フィルムで構成されている場合、の双方を含む趣旨である。
従って、上記包装容器は、全部又は主要部が可撓性の高分子フィルムで構成された可撓性の包装容器、いわゆる包装袋であってもよく、可撓性の高分子フィルムとコーティング紙等のそれ以外の可撓性の部材を組み合わせた可撓性の包装容器であってもよく、あるいは可撓性の高分子フィルムと剛直な部材とを組み合わせた包装容器、例えば、蓋材としての高分子フィルムと、トレー、カップ等の剛直な部材とを組み合わせた形態のものであってもよい。
Packaging Container The packaging container that constitutes the package of the present invention comprises a polymer film. Here, "comprising a polymer film" refers to a case where the entire packaging container is made of a polymer film, and a case where a part of the packaging container such as the lid material is made of a polymer film. The purpose is to include both.
Therefore, the packaging container may be a flexible packaging container, a so-called packaging bag, which is wholly or principally composed of a flexible polymer film, such as a flexible polymer film and coated paper. It may be a flexible packaging container in which other flexible members other than the above are combined, or a packaging container in which a flexible polymer film and a rigid member are combined, for example, as a lid material. The molecular film may be combined with a rigid member such as a tray or a cup.
包装容器がいわゆる包装袋である実施形態においては、例えば、2枚の高分子フィルムを互いに重ね合わせた状態、または1枚の高分子フィルムを折り重ねた状態で、3辺または2辺を熱シールにより融着させる等して包装袋を形成することができる。残る1辺は、青果物等の内容物を包装袋内に配置した後、同様に熱シールにより融着させるなどして封止することができる。
なお、このような包装袋は、その平面視での形状は円形、三角形、四角形、四角形以上の多角形でもよいが、加工性や取扱いの容易さの観点から長方形をなすことが好ましい。
In an embodiment in which the packaging container is a so-called packaging bag, for example, two polymer films are superposed on each other, or one polymer film is folded, and three or two sides are heat-sealed. It is possible to form a packaging bag by fusing, for example. The remaining one side can be sealed by arranging the contents such as fruits and vegetables in the packaging bag and then similarly heat-sealing the contents.
The shape of such a packaging bag in a plan view may be a circle, a triangle, a quadrangle, or a polygon of a quadrangle or more, but it is preferably a rectangle from the viewpoint of workability and ease of handling.
本発明で用いる包装容器は、以上説明した高分子フィルムを含んでなるものであり、その酸素透過度は前述の範囲内であるものを好ましく使用することができ、収納される青果物の量、種類及び所望の内部酸素濃度等の各種ガス濃度に合わせて、最も好適な酸素透過度を選択することができる。 The packaging container used in the present invention comprises the above-described polymer film, and the oxygen permeability thereof is preferably within the above range, and the amount and type of fruits and vegetables to be stored can be preferably used. The most suitable oxygen permeability can be selected according to various gas concentrations such as the desired internal oxygen concentration.
青果物
本発明の包装体は、上記包装容器内に食用キノコを含む青果物を収納してなる。ここで、青果物が食用キノコを「含む」とは、当該青果物の全部が食用キノコで構成されている場合、及び当該青果物の一部が食用キノコ構成されている場合、の双方を包含する趣旨である。従って、包装容器内に収納される青果物は、食用キノコ以外の野菜、果物等を含んでいてもよく、含んでいなくともよい。更には、食用キノコを含んでいる限りにおいては、青果物以外の成分、例えば青果物以外の食品、調味料、食品添加物等を含んでいてもよい。
Fruits and vegetables The package of the present invention contains fruits and vegetables containing edible mushrooms in the packaging container. Here, the phrase "the fruit and vegetables include edible mushrooms" means that both of the case where all of the fruit and vegetables are composed of edible mushrooms and the case where part of the fruit and vegetables are composed of edible mushrooms. is there. Therefore, the fruits and vegetables stored in the packaging container may or may not include vegetables, fruits and the like other than edible mushrooms. Furthermore, as long as it contains edible mushrooms, it may contain components other than fruits and vegetables, for example, foods other than fruits and vegetables, seasonings, food additives and the like.
本発明の包装体を構成する(包装容器に収納される)食用キノコにおける「キノコ」は、菌類のうちで比較的大型の子実体を形成するもの、又はその子自体を包含する概念であり、「キノコ」の名称そのもので流通する青果物のみには限定されない。
すなわち、ここでいう食用キノコは、その好ましい例として、椎茸、シメジ、えのきたけ、エリンギ、松茸、等の全てを包含する概念であるが、これらには限定されない。特に好ましい例としては、シメジを挙げることができる。
The "mushroom" in the edible mushrooms (stored in the packaging container) that constitutes the package of the present invention is a concept that includes a relatively large fruiting body among fungi, or a child itself. It is not limited to fruits and vegetables distributed under the name "mushroom" itself.
That is, the edible mushrooms referred to herein are not limited to these, but include, as preferred examples, all of shiitake mushrooms, shimeji mushrooms, enokitake mushrooms, eryngii mushrooms, matsutake mushrooms, and the like. A particularly preferable example is shimeji.
食用キノコは所望の形状、大きさに切断したものでもよく、その形状、大きさに特に制限は無い。
食用キノコは、その鮮度や食味を保つために、殺菌処理されていてもよく、洗浄処理されていてもよい。
The edible mushroom may be cut into a desired shape and size, and the shape and size are not particularly limited.
The edible mushrooms may be sterilized or washed to maintain their freshness and taste.
本発明において包装容器内に、食用キノコとともに収納することができる食用キノコ以外の青果物には特に制限は無く、食用キノコとともに食用に供され得る、非加熱又は加熱の青果物を適宜収納することができる。その様な青果物の具体例としては、バナナ、マンゴー、ウメ、リンゴ、イチゴ、ミカン、ブドウ、和梨、西洋梨のような果実類、ダイコン、ニンジン、ナガイモ、ゴボウのような根菜類、トマト、キュウリ、ナス、ピーマン、エダマメ、オクラのような果菜類、緑豆モヤシ、大豆モヤシ、トウミョウのような芽物類、シイタケ、シメジ、エリンギ、マイタケ、マツタケのような菌茸類(キノコ類)、ブロッコリー、ホウレンソウ、コマツナ、チンゲンサイ、千切りではないキャベツ、レタス、アスパラガスのような葉茎菜類、花卉または苗を挙げることができるが、これらには限定されない。酸素濃度を制御し、これにより保持するという本実施形態の作用からは、実質的に呼吸を行っている形態の青果物の鮮度保持に特に有効である。 In the present invention, there is no particular limitation on fruits and vegetables other than edible mushrooms that can be stored together with edible mushrooms in the packaging container, and unheated or heated fruits and vegetables that can be edible with edible mushrooms can be stored as appropriate. .. Specific examples of such fruits and vegetables include fruits such as banana, mango, plum, apple, strawberry, mandarin orange, grape, Japanese pear, pear, Japanese radish, carrot, potato, root vegetables such as burdock, tomato, Fruit vegetables such as cucumber, eggplant, peppers, edamame, okra, mung bean sprouts, soybean bean sprouts, buds such as tokyo, mushrooms (mushrooms) such as shiitake, shimeji, eringi, maitake, matsutake, and broccoli. , Spinach, komatsuna, bok choy, non-shredded cabbage, lettuce, leafy vegetables such as asparagus, flowers or seedlings, but are not limited thereto. From the effect of the present embodiment of controlling and maintaining the oxygen concentration, it is particularly effective for maintaining the freshness of fruits and vegetables that are substantially breathing.
本発明において包装容器に収納され鮮度保持される食用キノコを含む青果物の形態にも特に制限は無い。また、青果物は、洗浄、冷却、脱水等の処理のいずれか又は全てを行ったものであってもよく、またこれらの処理のいずれも行わないものであってもよい。 In the present invention, the form of fruits and vegetables containing edible mushrooms stored in a packaging container and kept fresh is not particularly limited. The fruits and vegetables may have been subjected to any or all of the treatments such as washing, cooling and dehydration, or may be those without any of these treatments.
食用キノコは、栄養価が高く、薬効成分を有する場合もあることから、単に食用としてのみならず医薬用として消費されることができるので、特に高い経済的価値を有する。本実施形態は、この様な食用キノコの鮮度保持に有効に用いることができるので、特に高い経済的価値を有する。 Since edible mushrooms have a high nutritional value and may have medicinal components, they can be consumed not only as foods but also as medicines, and thus have a particularly high economic value. The present embodiment can be effectively used to maintain the freshness of such edible mushrooms, and thus has a particularly high economic value.
食用キノコ(及び存在する場合には食用キノコとともに収納される青果物)の種類及び形態により、鮮度保持に最も好ましい酸素濃度はある程度異なり、それに伴い最も好ましい酸素透過度、並びにその様な酸素透過度を与える高分子フィルムの態様も異なるが、これらを適切に設定することで、上記食用キノコ(及び存在する場合には食用キノコとともに収納される青果物)のいずれについても、本態様によってより一層有効に鮮度保持を行うことができる。 Depending on the type and form of edible mushrooms (and fruits and vegetables that are stored with the edible mushrooms, if present), the most preferable oxygen concentration for maintaining freshness will vary to some extent. The aspect of the polymer film to be given is also different, but by appropriately setting these, the freshness of the edible mushrooms (and fruits and vegetables stored together with the edible mushrooms, if any) is more effectively improved by this aspect. Hold can be done.
包装体
本発明の包装体の、好ましい二酸化炭素濃度及び酸素濃度とその経日変化は、前述のとおりである。かかる包装体を使用することにより、包装容器内に収容された青果物中の食用キノコの品質劣化を極めて有効に抑制することができる。
Package The preferable carbon dioxide concentration and oxygen concentration of the package of the present invention, and their daily changes are as described above. By using such a package, it is possible to extremely effectively suppress the quality deterioration of the edible mushrooms in the fruits and vegetables contained in the packaging container.
包装体の内部の酸素濃度は、例えば、包装体内部の気体を、サンプリング針チューブでサンプリングして、食品包装用ジルコニア酸素濃度計やガスクロマトグラフィーにて酸素濃度を測定することにより、特定することができる。
ここで、「包装後」とは、包装容器内に食用キノコを含む青果物を収納した後、包装容器を封止してからの経過時間をいい、「包装後8日」とは、包装容器内に食用キノコを含む青果物を収納した後、包装容器を封止してから8日(192時間)経過後の状態をいう。
The oxygen concentration inside the package is specified by, for example, sampling the gas inside the package with a sampling needle tube and measuring the oxygen concentration with a zirconia oxygen concentration meter for food packaging or gas chromatography. You can
Here, "after packaging" means the elapsed time after the packaging container is sealed after storing fruits and vegetables containing edible mushrooms in the packaging container, and "8 days after packaging" is in the packaging container. The state after 8 days (192 hours) have passed since the packaging container was sealed after storing fruits and vegetables containing edible mushrooms.
高分子フィルム
本発明の優れた特徴を実現するために、所定の酸素透過度を有する高分子フィルムを用いて包装容器を構成することが望ましいことは、前述のとおりである。
Polymer Film As described above, in order to realize the excellent features of the present invention, it is desirable to configure the packaging container using a polymer film having a predetermined oxygen permeability.
本発明で用いる高分子フィルムの酸素透過度は、例えば以下の方法によって測定することができる。
まず、次の方法で内寸a(cm)×b(cm)の袋を形成する。
1枚のフィルムをほぼ均等に2つ折りにし約5mm幅で、インパルスシーラー(富士インパルス社製、品番Fi−200−10WK)で加熱条件の目盛を3に設定してヒートシールを行い、当該ヒートシール辺がほぼ中央にくるようにヒートシール辺とほぼ垂直をなす辺の一方の全体を、他方の辺の一方の連通部となる端部約2cmを除く全体をヒートシールして、内寸220mm×240mmの袋を形成する。
次に前記連通部から窒素ガスを注入し、袋内が飽和状態になれば袋内のガスを連通部からほぼすべて排出する。この操作を5回繰り返した後、窒素ガスを注入して袋内を窒素ガスで飽和させて連通部を前記インパルスシーラーで同様の条件でヒートシールする。窒素ガスを飽和させた袋を22℃、相対湿度40%の空気中(1気圧、酸素濃度:21%、窒素濃度:79%)の室内に6時間放置する。
次にサンプリング針チューブで約20ccサンプリングして食品包装用ジルコニア酸素濃度計(東レエンジニアリング社製、型番LC−750F)にて袋中の酸素濃度を測定する。さらに、袋中の気体の体積を測定し、下記の式から酸素透過度を算出する。
(式) 酸素透過度=内部酸素濃度変化(%)/100×体積(cm3)×24×60/時間(360分)×10000cm2/面積(2×a×b cm2)/酸素の分圧(0.21atm)
The oxygen permeability of the polymer film used in the present invention can be measured, for example, by the following method.
First, a bag having an inner size of a (cm) x b (cm) is formed by the following method.
Fold one film into two almost evenly and set the scale of heating conditions to 3 with an impulse sealer (manufactured by Fuji Impulse Co., product number Fi-200-10WK) with a width of about 5 mm, and heat seal the film. Heat-seal one side approximately perpendicular to the heat-sealed side so that the side is almost in the center, and heat-seal the entire other side except for the end of about 2 cm which is the communicating part of the other side, and the inside dimension is 220 mm × Form a 240 mm bag.
Next, nitrogen gas is injected from the communication section, and when the inside of the bag becomes saturated, almost all the gas in the bag is discharged from the communication section. After repeating this operation 5 times, nitrogen gas is injected to saturate the inside of the bag with nitrogen gas, and the communication part is heat-sealed under the same conditions with the impulse sealer. The bag saturated with nitrogen gas is left for 6 hours in a room at 22° C. and 40% relative humidity in air (1 atm, oxygen concentration: 21%, nitrogen concentration: 79%).
Next, about 20 cc is sampled with a sampling needle tube, and the oxygen concentration in the bag is measured with a zirconia oxygen concentration meter for food packaging (Model No. LC-750F, manufactured by Toray Engineering Co., Ltd.). Further, the volume of gas in the bag is measured, and the oxygen permeability is calculated from the following formula.
(Formula) oxygen permeability = internal oxygen concentration change (%) / 100 × volume (cm 3) × 24 × 60 / time (360 minutes) × 10000 cm 2 / area (2 × a × b cm 2 ) / oxygen min Pressure (0.21 atm)
高分子フィルムの材質、厚さ、加工方法等を適宜選択することで、高分子フィルムの酸素透過度を適宜調節することができる。例えば、二軸延伸ポリプロピレン(OPP)フィルムの場合には、厚みを60μm以下、好ましくは55μm以下、より好ましくは50μm以下、さらに好ましくは45μm以下、最も好ましくは40μm以下とすることで、20℃、90%RHにおける酸素透過度を、500cc/m2・day・atm以上とすることができる。機械的強度、加工性等も併せて考慮すれば、高分子フィルムの厚みは、10〜60μmであることが好ましく、15〜55μmであることがより好ましく、20〜50μmであることがさらに好ましく、20〜45μmであることがより一層好ましく、15〜45μmであることが特に好ましい。 The oxygen permeability of the polymer film can be appropriately adjusted by appropriately selecting the material, thickness, processing method, and the like of the polymer film. For example, in the case of a biaxially oriented polypropylene (OPP) film, by setting the thickness to 60 μm or less, preferably 55 μm or less, more preferably 50 μm or less, still more preferably 45 μm or less, most preferably 40 μm or less, 20° C., The oxygen permeability at 90% RH can be 500 cc/m 2 ·day·atm or more. Considering mechanical strength and workability together, the thickness of the polymer film is preferably from 10 to 60 μm, more preferably from 15 to 55 μm, even more preferably from 20 to 50 μm, The thickness is more preferably 20 to 45 μm, and particularly preferably 15 to 45 μm.
上述の様に、高分子フィルムの酸素透過度は、高分子フィルムの材質、厚さ、加工方法等を適宜選択することで、調節することができるので、必ずしも、酸素透過度の調節のために高分子フィルムに開口部を設けることを要しない。
高分子フィルムに開口部を設けない場合には、製造プロセスがより簡便、低コストなものとなり、また開口部の大きさ、形状等を精密に制御することも不要となる。
高分子フィルム中に開口部が存在しないことは、例えば、包装容器を構成する高分子フィルムが、インク洩れチェッカーで確認できる貫通孔を有さないことにより、確認することができる。
As described above, the oxygen permeability of the polymer film can be adjusted by appropriately selecting the material, thickness, processing method, etc. of the polymer film, so that it is not always necessary to adjust the oxygen permeability. It is not necessary to provide an opening in the polymer film.
If the polymer film is not provided with openings, the manufacturing process becomes simpler and less expensive, and it is not necessary to precisely control the size, shape, etc. of the openings.
The absence of an opening in the polymer film can be confirmed by, for example, the polymer film forming the packaging container having no through hole which can be confirmed by an ink leakage checker.
一方で、本発明の一実施形態においては、厚い高分子フィルムや、酸素透過度の低い高分子素材を使用する必要がある場合等に、青果物の呼吸を維持するための所望の酸素透過度を実現するために、高分子フィルムに設けた開口部を併用しても良い。開口部の形状には特に限定は無く、円形、略円形であってもよく、スリット状であってもよい。円形、略円形の開口部は、加工が容易である点等において好ましく、スリット状での開口部は、異物の侵入を有効に防止できる点等において好ましい。
個々の開口部の大きさと、開口部の個数は、高分子フィルムの酸素透過度が適切な限りにおいて、適宜設定、変更可能であり、その際には、高分子フィルムの有効面積に占める開口部の数が指針となる。例えば2mmの長さのスリット状の開口部であって、閉じた状態では光学顕微鏡(オリンパス社製、型式SZH−131)にて倍率4倍による観察では貫通口としての幅は視認することができないものを設ける場合、200mm×200mmの包装容器に対して1つ存在するごとに約1000cc/m2・day・atmの酸素透過度を上げる効果があり、この様な知見に基づき必要とされる包装容器全体の酸素透過度からスリット開口部の数を決めることが好ましい。
On the other hand, in one embodiment of the present invention, a thick polymer film, or when it is necessary to use a polymer material having a low oxygen permeability, the desired oxygen permeability for maintaining the respiration of fruits and vegetables. To achieve this, an opening provided in the polymer film may be used together. The shape of the opening is not particularly limited, and may be circular, substantially circular, or slit-shaped. A circular or substantially circular opening is preferable because it is easy to process, and a slit-shaped opening is preferable because it can effectively prevent foreign matter from entering.
The size of each opening and the number of openings can be appropriately set and changed as long as the oxygen permeability of the polymer film is appropriate, and in that case, the openings occupying the effective area of the polymer film. The number of is a guide. For example, in the case of a slit-shaped opening having a length of 2 mm, the width as a through-hole cannot be visually recognized by observation with an optical microscope (manufactured by Olympus, model SZH-131) at a magnification of 4 times in a closed state. When one is provided, it has an effect of increasing the oxygen permeability of about 1000 cc/m 2 ·day·atm for each 200 mm×200 mm packaging container, and the packaging required based on such knowledge. It is preferable to determine the number of slit openings from the oxygen permeability of the entire container.
本発明で用いる高分子フィルムの厚みには特に制限は無く、好適な酸素透過度、包装容器を形成した際の可撓性、強度、透明性、経済性等、開口部を設ける場合には開口部の形成の際の精度や容易性、等の観点から、高分子フィルムを形成する材料との関係において適宜好適な厚みを選択すればよい。典型的には、開口部を設ける場合の高分子フィルムの厚みは、10〜60μmであることが好ましく、15〜55μmであることがより好ましく、20〜50μmであることがさらに好ましく、20〜45μmであることがより一層好ましく、15〜45μmであることが特に好ましい。 The thickness of the polymer film used in the present invention is not particularly limited, and suitable oxygen permeability, flexibility when forming a packaging container, strength, transparency, economical efficiency, etc. From the viewpoint of accuracy and easiness in forming the portion, etc., a suitable thickness may be appropriately selected in relation to the material forming the polymer film. Typically, the thickness of the polymer film when the opening is provided is preferably 10 to 60 μm, more preferably 15 to 55 μm, further preferably 20 to 50 μm, and further preferably 20 to 45 μm. Is more preferable, and 15 to 45 μm is particularly preferable.
上記高分子フィルムの材質には、特に制限は無いが、従来の青果物包装用のフィルムに用いられる高分子を適宜使用することができる。例えば、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、ポリスチレン、ナイロン(ポリアミド)、エチレン酢酸ビニル共重合体(EVA)、ポリブチレンサクシネート、ポリブチレンサクシネート・アジペート、ポリ乳酸等を挙げることができる。また、例えば、セロハン等の天然高分子を用いることもできる。更にこれらのうちのいずれかの材質を単独で用いても良く、これらの複数をブレンドして、及び/又はラミネートして用いてもよい。 The material of the polymer film is not particularly limited, but the polymer used in the conventional film for packaging fruits and vegetables can be appropriately used. Examples thereof include polyethylene, polypropylene, polyethylene terephthalate, polystyrene, nylon (polyamide), ethylene vinyl acetate copolymer (EVA), polybutylene succinate, polybutylene succinate adipate, and polylactic acid. Further, for example, a natural polymer such as cellophane can be used. Further, any one of these materials may be used alone, or a plurality of these materials may be blended and/or laminated.
加工の容易さやコストの観点からは、上記高分子フィルムの材質は、熱可塑性樹脂であることが好ましい。該熱可塑性樹脂としては、例えば、エチレン、プロピレン、1−ブテン、1−ヘキセン、4−メチル・1−ペンテン、1−オクテン等のα−オレフィンの単独重合体または共重合体が挙げられる。具体的には、高圧法低密度ポリエチレン、線状低密度ポリエチレン(LLDPE)、高密度ポリエチレンなどのエチレン系重合体、プロピレン単独重合体、プロピレン・α−オレフィンランダム共重合体、プロピレンブロック共重合体などのプロピレン系重合体、ポリ1−ブテン、ポリ4−メチル・1−ペンテンなどのポリオレフィンが挙げられる。また、該熱可塑性樹脂としては、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート等のポリエステル、ナイロン−6、ナイロン−66、ポリメタキシレンアジパミド等のポリアミド、ポリ塩化ビニル、ポリイミド、エチレン・酢酸ビニル共重合体またはその鹸化物、ポリビニルアルコール、ポリアクリロニトリル、ポリカーボネート、ポリスチレン、アイオノマー、ポリ乳酸、ポリブチレンサクシネート等の生分解性樹脂、あるいはこれらの混合物等が挙げられる。これらの熱可塑性樹脂は一種を用いてもよく、二種以上を併用してもよい。これらの中でも、該熱可塑性樹脂としては、ポリオレフィン、ポリエステル、ポリアミド等が剛性、透明性に優れるため好ましい。また、該熱可塑性樹脂としては、エチレン系重合体、プロピレン系重合体が軽量でフィルム加工性に優れるためより好ましく、柔軟性、透明性の観点からプロピレン系重合体がさらに好ましい。 From the viewpoint of ease of processing and cost, the material of the polymer film is preferably a thermoplastic resin. Examples of the thermoplastic resin include homopolymers or copolymers of α-olefins such as ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene and 1-octene. Specifically, high-pressure low density polyethylene, linear low density polyethylene (LLDPE), high density polyethylene and other ethylene polymers, propylene homopolymers, propylene/α-olefin random copolymers, propylene block copolymers. And propylene polymers such as poly-1-butene, and polyolefins such as poly-4-methyl/1-pentene. Examples of the thermoplastic resin include polyesters such as polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, polyamides such as nylon-6, nylon-66 and polymeta-xylene adipamide, polyvinyl chloride, polyimide, ethylene acetic acid. Examples thereof include vinyl copolymers or saponified products thereof, polyvinyl alcohol, polyacrylonitrile, polycarbonate, polystyrene, ionomers, polylactic acid, polybutylene succinate, and other biodegradable resins, or a mixture thereof. These thermoplastic resins may be used alone or in combination of two or more. Among these, as the thermoplastic resin, polyolefin, polyester, polyamide and the like are preferable because they have excellent rigidity and transparency. Further, as the thermoplastic resin, ethylene-based polymers and propylene-based polymers are more preferable because they are lightweight and have excellent film processability, and propylene-based polymers are more preferable from the viewpoint of flexibility and transparency.
<プロピレン系重合体>
前記プロピレン系重合体としては、ポリプロピレンの名称で製造、販売されているプロピレン単独重合体(ホモPPとも呼ばれている)、プロピレン・α−オレフィンランダム共重合体(ランダムPPとも呼ばれている)、プロピレン単独重合体と、低結晶性または非晶性のプロピレン・エチレンランダム共重合体との混合物(ブロックPPとも呼ばれている)などのプロピレンを主成分とする結晶性の重合体が挙げられる。また、プロピレン系重合体は、分子量が異なるプロピレン単独重合体の混合物であってもよく、プロピレン単独重合体と、プロピレンとエチレン又は炭素数4から10のα−オレフィンとのランダム共重合体との混合物であってもよい。
<Propylene polymer>
As the propylene-based polymer, propylene homopolymer (also called homo PP), which is manufactured and sold under the name of polypropylene, propylene/α-olefin random copolymer (also called random PP). , A crystalline polymer containing propylene as a main component, such as a mixture of a propylene homopolymer and a low crystalline or amorphous propylene/ethylene random copolymer (also referred to as block PP). .. The propylene-based polymer may be a mixture of propylene homopolymers having different molecular weights, and includes a propylene homopolymer and a random copolymer of propylene and ethylene or an α-olefin having 4 to 10 carbon atoms. It may be a mixture.
前記プロピレン系重合体としては、具体的には、ポリプロピレン、プロピレン・エチレン共重合体、プロピレン・エチレン・1−ブテン共重合体、プロピレン・1−ブテン共重合体、プロピレン・1−ペンテン共重合体、プロピレン・1−ヘキセン共重合体、プロピレン・1−オクテン共重合体などのプロピレンを主要モノマーとし、これとエチレン及び炭素数4から10のα−オレフィンから選ばれる少なくとも1種類以上との共重合体が挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。 Specific examples of the propylene-based polymer include polypropylene, propylene/ethylene copolymer, propylene/ethylene/1-butene copolymer, propylene/1-butene copolymer, propylene/1-pentene copolymer. , A propylene/1-hexene copolymer, a propylene/1-octene copolymer, etc. as a main monomer, and a copolymerization of this with at least one or more selected from ethylene and α-olefins having 4 to 10 carbon atoms. An example is coalescence. These may be used alone or in combination of two or more.
前記プロピレン系重合体の密度は、0.890〜0.930g/cm3であることが好ましく、0.900〜0.920g/cm3であることがより好ましい。また、前記プロピレン系重合体のMFR(ASTM D1238 荷重2160g、温度230℃)は、0.5〜60g/10分が好ましく、0.5〜10g/10分がより好ましく、1〜5g/10分がさらに好ましい。 The density of the propylene-based polymer is preferably 0.890 to 0.930 g/cm 3 , and more preferably 0.900 to 0.920 g/cm 3 . The MFR (ASTM D1238 load 2160 g, temperature 230° C.) of the propylene-based polymer is preferably 0.5 to 60 g/10 minutes, more preferably 0.5 to 10 g/10 minutes, and even more preferably 1 to 5 g/10 minutes. Is more preferable.
<エチレン系重合体>
前記エチレン系重合体としては、エチレンの単独重合体、エチレンを主要モノマーとし、それと炭素数3から8のα−オレフィンの少なくとも1種類以上との共重合体、エチレン・酢酸ビニル共重合体、そのケン化物及びアイオノマーが挙げられる。具体的には、ポリエチレン、エチレン・プロピレン共重合体、エチレン・1−ブテン共重合体、エチレン・1−ペンテン共重合体、エチレン・1−ヘキセン共重合体、エチレン・4−メチル−1−ペンテン共重合体、エチレン・1−オクテン共重合体などのエチレンを主要モノマーとし、これと炭素数3から8のα−オレフィンの少なくとも1種類以上との共重合体が挙げられる。これらの共重合体中のα−オレフィンの割合は、1〜15モル%であることが好ましい。
<Ethylene polymer>
As the ethylene-based polymer, a homopolymer of ethylene, a copolymer containing ethylene as a main monomer and at least one α-olefin having 3 to 8 carbon atoms, an ethylene-vinyl acetate copolymer, Saponified products and ionomers are mentioned. Specifically, polyethylene, ethylene/propylene copolymer, ethylene/1-butene copolymer, ethylene/1-pentene copolymer, ethylene/1-hexene copolymer, ethylene-4-methyl-1-pentene Examples of the copolymer include a copolymer and ethylene/1-octene copolymer as a main monomer, and a copolymer of ethylene and at least one or more α-olefin having 3 to 8 carbon atoms. The proportion of α-olefin in these copolymers is preferably 1 to 15 mol %.
また、前記エチレン系重合体としては、ポリエチレンの名称で製造・販売されているエチレンの重合体が挙げられる。具体的には、高圧法低密度ポリエチレン(LDPE)、直鎖状低密度ポリエチレン(LLDPE)、高密度ポリエチレン(HDPE)が好ましく、LLDPEがより好ましい。LLDPEは、エチレンと、少量のプロピレン、ブテン−1、ヘプテン−1、ヘキセン−1、オクテン−1、4−メチル−ペンテン−1等との共重合体である。また、前記エチレン系重合体は、エチレンの単独重合体であってもよく、LLDPE等のエチレンを主体とする重合体であってもよい。 Examples of the ethylene polymer include ethylene polymers manufactured and sold under the name of polyethylene. Specifically, high-pressure low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and high-density polyethylene (HDPE) are preferable, and LLDPE is more preferable. LLDPE is a copolymer of ethylene and a small amount of propylene, butene-1, heptene-1, hexene-1, octene-1, 4-methyl-pentene-1 and the like. The ethylene-based polymer may be a homopolymer of ethylene or a polymer mainly composed of ethylene such as LLDPE.
前記エチレン系重合体の密度は0.910〜0.940g/cm3が好ましく、0.920〜0.930g/cm3がより好ましい。該密度が0.910g/cm3以上であることにより、ヒートシール性が向上する。また、該密度が0.940g/cm3以下であることにより、加工性および透明性が向上する Density of the ethylene polymer is preferably 0.910~0.940g / cm 3, 0.920~0.930g / cm 3 is more preferable. When the density is 0.910 g/cm 3 or more, heat sealability is improved. Further, when the density is 0.940 g/cm 3 or less, workability and transparency are improved.
なお、ブレンド、及び/又はラミネートは、上記の高分子のうちのいずれか同士のブレンド、及び/又はラミネートであってもよく、また上記の高分子のうちのいずれかと、高分子以外の材料とのブレンド、及び/又はラミネートであってもよい。すなわち、高分子フィルムは、高分子以外の素材、例えば耐熱安定剤(酸化防止剤)、耐候安定剤、紫外線吸収剤、滑剤、スリップ剤、核剤、ブロッキング防止剤、帯電防止剤、防曇剤、顔料、染料等の他、タルク、シリカ、珪藻土などの各種フィラー類を含んでいてもよいし、高分子フィルムと金属箔、紙、不織布等とのラミネートであってもよい。 The blend and/or the laminate may be a blend and/or a laminate of any of the above-mentioned polymers, and any of the above-mentioned polymers and a material other than the polymer may be used. May be a blend and/or a laminate. That is, a polymer film is a material other than a polymer, for example, a heat stabilizer (antioxidant), a weather stabilizer, an ultraviolet absorber, a lubricant, a slip agent, a nucleating agent, an antiblocking agent, an antistatic agent, an antifogging agent. In addition to pigments, dyes, etc., it may contain various fillers such as talc, silica, diatomaceous earth, etc., or may be a laminate of a polymer film and metal foil, paper, nonwoven fabric, etc.
本発明において包装容器を構成する高分子フィルムは、無延伸フィルム、延伸フィルムのいずれであってもよい。
機械的強度等の観点からは、各種高分子の延伸フィルムを好適に用いることができる。
特に、プロピレン系重合体を用いた延伸フィルム(延伸ポリプロピレンフィルム)は、機械的強度、透明性、耐熱性等に優れるため、本発明に用いる包装容器において、特に好ましく使用することができる。
また、エチレン系重合体を用いたフィルム(ポリエチレン系フィルム)も、無延伸フィルム、延伸フィルムのいずれであってもよいが、ヒートシール性等の観点から、無延伸のものを、特に好ましく使用することができる。
本発明において包装容器を構成する高分子フィルムとして特に好適なものの例として、延伸ポリプロピレンフィルム、ポリエチレン系フィルム、及び延伸フィルムとポリエチレン系フィルムとの積層体を挙げることができる。
The polymer film forming the packaging container in the present invention may be either a non-stretched film or a stretched film.
From the viewpoint of mechanical strength and the like, stretched films of various polymers can be preferably used.
In particular, a stretched film using a propylene-based polymer (stretched polypropylene film) is excellent in mechanical strength, transparency, heat resistance and the like, and thus can be particularly preferably used in the packaging container used in the present invention.
Further, the film using an ethylene polymer (polyethylene film) may be either a non-stretched film or a stretched film, but from the viewpoint of heat sealability and the like, a non-stretched film is particularly preferably used. be able to.
Examples of particularly preferable polymer films constituting the packaging container in the present invention include a stretched polypropylene film, a polyethylene film, and a laminate of a stretched film and a polyethylene film.
<延伸ポリプロピレンフィルム>
本発明において好ましく用いられる延伸ポリプロピレンフィルムは少なくとも一方向に延伸されたフィルムから構成されていてもよいし、延伸ポリプロピレンフィルム自体が少なくとも一方向に延伸されていてもよい。また、延伸ポリプロピレンフィルムとして二軸延伸フィルムを得る場合には、例えば逐次、あるいは同時二軸延伸することにより容易に製造することも可能である。延伸ポリプロピレンフィルムとして二軸延伸フィルムを得る場合には、通常、縦方向に5〜8倍延伸し、続いて横方向にテンター機構を用いて8〜10倍延伸し、フィルムの厚さを最終的に20〜40μmとする方法、あるいは、縦方向及び横方向に夫々5〜10倍(面倍率で25〜100倍)延伸することにより製造することができる。
<ポリエチレン系フィルム>
本発明において好ましく用いられるポリエチレン系フィルムは、前記エチレン系重合体を含むフィルムである。ポリエチレン系フィルムは種々の公知の成型方法を用いることができるが、エクストルーダーによる押出によるキャスト成型が、生産効率の観点から好ましい。
<Stretched polypropylene film>
The stretched polypropylene film preferably used in the present invention may be composed of a film stretched in at least one direction, or the stretched polypropylene film itself may be stretched in at least one direction. When a biaxially stretched film is obtained as a stretched polypropylene film, it can be easily produced by, for example, sequential or simultaneous biaxial stretching. When a biaxially stretched film is obtained as a stretched polypropylene film, it is usually stretched 5 to 8 times in the machine direction and then 8 to 10 times in the transverse direction by using a tenter mechanism to obtain the final film thickness. 20 to 40 μm, or by stretching 5 to 10 times (25 to 100 times in area magnification) in the machine direction and the transverse direction, respectively.
<Polyethylene film>
The polyethylene film preferably used in the present invention is a film containing the ethylene polymer. Although various known molding methods can be used for the polyethylene-based film, cast molding by extrusion with an extruder is preferable from the viewpoint of production efficiency.
<延伸フィルム>
ナイロン6、ナイロン66等からなるポリアミドフィルム、ポリエチレンテレフタレート、ポリエチレンナフタレートに代表されるポリエステルからなるフィルム、ポリカーボネートフィルム、エチレン・ビニルアルコール共重合体フィルム、ポリビニルアルコールフィルム、ポリ塩化ビニルフィルム、ポリ塩化ビニリデンフィルム、ポリスチレンフィルム、ポリプロピレン等のポリオレフィン及びポリL乳酸、ポリD乳酸、またはポリL乳酸とポリD乳酸を精密に配位したステレオコンプレックス晶ポリ乳酸からなる一軸あるいは二軸延伸フィルムである。
<Stretched film>
Polyamide film made of nylon 6, nylon 66, etc., film made of polyester typified by polyethylene terephthalate, polyethylene naphthalate, polycarbonate film, ethylene/vinyl alcohol copolymer film, polyvinyl alcohol film, polyvinyl chloride film, polyvinylidene chloride A uniaxially or biaxially stretched film comprising a film, a polystyrene film, a polyolefin such as polypropylene, and poly L lactic acid, poly D lactic acid, or a stereocomplex polylactic acid in which poly L lactic acid and poly D lactic acid are precisely coordinated.
<延伸フィルムとポリエチレン系フィルムとの積層体>
本発明において好ましく用いられる延伸フィルムとポリエチレン系フィルムとの積層体は上記ポリエチレン系フィルムの層と延伸フィルムの層を積層して得られる。ポリエチレン系フィルムは一方向または二方向に延伸されていてもよいが、包装袋の機械的強度の安定性の観点から、無延伸フィルムであることが好ましい。
予め作製された延伸フィルムとポリエチレン系フィルムとを接着剤により貼着させるドライラミネーションを行うが、ここで接着剤を塗布する延伸フィルム表面にはコロナ処理をしておくことが接着安定性の観点から好ましい。具体的には、コロナ処理後のフィルム表面の表面張力が接着安定性の観点から、35mN/m以上が好ましく、40mN/m以上がより好ましい。
<Laminate of stretched film and polyethylene film>
The laminate of the stretched film and the polyethylene film preferably used in the present invention is obtained by laminating the layer of the polyethylene film and the layer of the stretched film. The polyethylene film may be stretched in one direction or in two directions, but it is preferably an unstretched film from the viewpoint of stability of mechanical strength of the packaging bag.
From the viewpoint of adhesion stability, it is necessary to perform a corona treatment on the surface of the stretched film on which the adhesive is applied. preferable. Specifically, the surface tension of the film surface after the corona treatment is preferably 35 mN/m or more, and more preferably 40 mN/m or more, from the viewpoint of adhesion stability.
また、これらの高分子フィルムは、延伸加工、防曇加工や印刷が施されていてもよく、銀、銅のような無機系抗菌剤や、キチン、キトサン、アリルイソチオシアネートのような有機系抗菌剤が塗布されたものであってもよいし、これらがフィルム中に練り込まれているものであってもよい。
青果物等の内容物の鮮度保持の観点からは、上記高分子フィルムが、少なくとも1種の抗菌剤を含有することが好ましい。
また、上記高分子フィルムの表面に特定の界面活性剤が特定量存在し、又は上記高分子フィルムが特定の界面活性剤を特定量含むことで、抗菌機能を有していてもよい。例えば、パルミチルジエタノールアミン、ステアリルジエタノールアミン、グリセリンモノラウレートおよびジグリセリンモノラウレートからなる群から選択される少なくとも一種の化合物が、上記高分子フィルムの少なくとも一方の表面に存在することが好ましく、当該少なくとも1種の化合物が0.002〜0.5g/m2存在することが特に好ましい。あるいは、上記高分子フィルムが、パルミチルジエタノールアミン、ステアリルジエタノールアミン、グリセリンモノラウレートおよびグリセリンモノカプレートからなる群から選択される少なくとも一種の化合物を含有していることが好ましく、0.001〜3質量部含有していることが特に好ましい。
上記高分子フィルムの表面に特定の界面活性剤が特定量存在し、又は上記高分子フィルムが特定の界面活性剤を特定量含むことで、該高分子フィルムの表面での結露が抑制され、雑菌の繁殖が抑制されることにより、結露(ドリップ)中での雑菌の増殖が抑制され、抗菌機能が発揮される。
In addition, these polymer films may be subjected to stretching processing, anti-fog processing or printing, and inorganic antibacterial agents such as silver and copper, and organic antibacterial agents such as chitin, chitosan and allyl isothiocyanate. The agent may be applied, or these may be kneaded into the film.
From the viewpoint of maintaining the freshness of contents such as fruits and vegetables, the polymer film preferably contains at least one antibacterial agent.
In addition, a specific amount of a specific surfactant is present on the surface of the polymer film, or the specific amount of the specific surfactant is included in the polymer film, so that the polymer film may have an antibacterial function. For example, at least one compound selected from the group consisting of palmityldiethanolamine, stearyldiethanolamine, glycerin monolaurate and diglycerin monolaurate is preferably present on at least one surface of the polymer film, It is particularly preferred that one compound is present in an amount of 0.002-0.5 g/m 2 . Alternatively, the polymer film preferably contains at least one compound selected from the group consisting of palmityldiethanolamine, stearyldiethanolamine, glycerin monolaurate and glycerin monocaprate, and 0.001 to 3 parts by mass. It is particularly preferable to contain.
There is a specific amount of a specific surfactant on the surface of the polymer film, or the polymer film contains a specific amount of a specific surfactant, dew condensation on the surface of the polymer film is suppressed, various bacteria By suppressing the reproduction of the bacteria, the growth of various bacteria in the dew condensation is suppressed and the antibacterial function is exerted.
透明性、可撓性、コスト等の観点からは、従来当該技術分野において広く用いられていた延伸ポリプロピレンフィルム、又は延伸ポリプロピレンフィルムとポリエチレン系フィルムとの積層体を高分子フィルムとして用いることが特に好ましい。これらのフィルムは一般にヒートシール性に優れるので、包装容器の製造において生産性が良好である。
この場合、延伸プロピレンフィルム単体で用いる場合は、その厚さが10〜100μmであることが好ましく、延伸ポリプロピレンフィルムとポリエチレン系フィルムとの積層体を用いる場合には、前者の厚さが10〜50μm、後者の厚さが10〜120μmであることが好ましい。
From the viewpoint of transparency, flexibility, cost, etc., it is particularly preferable to use a stretched polypropylene film, which has been widely used in the related art, or a laminate of a stretched polypropylene film and a polyethylene-based film as a polymer film. .. Since these films are generally excellent in heat sealability, they have good productivity in the production of packaging containers.
In this case, when the stretched propylene film is used alone, the thickness thereof is preferably 10 to 100 μm, and when the laminate of the stretched polypropylene film and the polyethylene-based film is used, the former thickness is 10 to 50 μm. The latter preferably has a thickness of 10 to 120 μm.
なお、ヒートシールに必ずしも適さない高分子フィルムを用いる場合には、該高分子フィルムの全部又は一部にシーラント層をラミネートあるいはコーティングすることで形成すればよい。例えば、アクリル樹脂をコーティングしたセロハンフィルム、ポリエチレンテレフタレート(PET)に線状低密度ポリエチレン(LLDPE)ポリスチレンとEVAをラミネートしたフィルムが挙げられ、これらを好適な高分子フィルムとして用いることができる。 When a polymer film that is not necessarily suitable for heat sealing is used, it may be formed by laminating or coating a sealant layer on all or part of the polymer film. For example, a cellophane film coated with an acrylic resin, a film obtained by laminating polyethylene terephthalate (PET) with linear low-density polyethylene (LLDPE) polystyrene and EVA can be used, and these can be used as suitable polymer films.
包装体の製造方法、及び鮮度保持方法
以下、本発明の包装体の製造方法を、食用キノコの鮮度保持用の包装体を例に説明する。
Method for Producing Package and Method for Retaining Freshness Hereinafter, a method for producing a package of the present invention will be described by taking a package for retaining freshness of edible mushrooms as an example.
食用キノコは、本実施形態で用いる高分子フィルムを含んでなる包装容器(一辺が封止されていないもの)に詰められ、計量後包装容器が封止され、食用キノコの鮮度保持用包装体が製造される。 The edible mushrooms are packed in a packaging container (one side of which is not sealed) containing the polymer film used in the present embodiment, the packaging container is sealed after weighing, and the packaging for keeping the freshness of the edible mushrooms is obtained. Manufactured.
なお、本実施形態の青果物鮮度保持用包装体は、食用キノコを含む青果物の収納及び包装容器の封止の際に、窒素封入及び/又は脱気を行ってもよい。窒素封入及び/又は脱気を行うことにより、臭気を抑制することができる場合がある。
また、流通の過程での効率向上やスペース節約、特定の気体の排除等の観点からも、包装容器の封止後に脱気を行ってもよい。
The package for freshness preservation of fruits and vegetables of the present embodiment may be filled with nitrogen and/or deaerated when storing fruits and vegetables containing edible mushrooms and sealing the packaging container. It may be possible to suppress the odor by performing nitrogen filling and/or deaeration.
In addition, degassing may be performed after sealing the packaging container from the viewpoints of improving efficiency in the distribution process, saving space, and eliminating a specific gas.
本発明の包装体は、包装容器中に食用キノコを含む青果物のみが収納されていてもよいし、更にそれ以外の部材が収納されていてもよい。
例えば、青果物に加えて、吸湿剤、及び/又は抗菌剤が包装容器中に収納されていてもよい。
吸湿剤には特に限定は無く、吸湿効果または調湿効果を有する公知又は市販の材料を使用することができる。吸湿剤として好適に用いられるものとしては、例えば、活性炭、シリカゲル、アルミナゲル、シリカアルミナゲル、無水硫酸マグネシウム、ゼオライト、合成ゼオライト、酸化カルシウム、塩化カルシウム、及び、焼ミョウバン、又はこれらの混合物等が挙げられるが、これらに限定されない。
これらの中でも、青果物への影響や食品である青果物等の近くで使用することに関する懸念の比較的少ない活性炭を用いることが特に好ましい。活性炭は粉末状、粒状どちらでも何ら差し支えなく、原料はヤシ殻、おがくず、木炭、竹炭、褐炭、泥炭、ほね、石油ピッチなどどんなものでも差し支えない。また活性炭は不織布、セロファン、紙などなどで使用単位毎に包装してあることが望ましいが、活性炭自体が繊維状になったものでも差し支えない。活性炭の包材としては、合成樹脂からなる不織布のように、ヒートシール性を有するものが好ましいが、水蒸気透過性を有しかつ活性炭がこぼれないもので有れば、紙、天然繊維などでも何ら問題ない。
In the package of the present invention, only fruits and vegetables containing edible mushrooms may be stored in the packaging container, or other members may be stored.
For example, in addition to fruits and vegetables, a hygroscopic agent and/or an antibacterial agent may be contained in the packaging container.
The hygroscopic agent is not particularly limited, and known or commercially available materials having a hygroscopic effect or a humidity adjusting effect can be used. Suitable examples of the hygroscopic agent include activated carbon, silica gel, alumina gel, silica alumina gel, anhydrous magnesium sulfate, zeolite, synthetic zeolite, calcium oxide, calcium chloride, and burnt alum, or a mixture thereof. Examples include, but are not limited to:
Among these, it is particularly preferable to use activated carbon, which has relatively little concern about effects on fruits and vegetables and use near fruits and vegetables as foods. The activated carbon may be powdery or granular, and the raw material may be coconut shell, sawdust, charcoal, bamboo charcoal, lignite, peat, rice, petroleum pitch, or any other material. It is desirable that the activated carbon be packed in a unit such as a non-woven fabric, cellophane, paper or the like, but the activated carbon itself may be in a fibrous form. As the wrapping material for the activated carbon, it is preferable to use one having a heat-sealing property, such as a nonwoven fabric made of a synthetic resin, but as long as it has water vapor permeability and the activated carbon does not spill, it may be paper, natural fiber, or the like. no problem.
抗菌剤には特に限定は無く、抗菌作用を有する物質を適宜使用することができるが、食用キノコを含む青果物への影響や食品である青果物等の近くで使用することに関する懸念の比較的少ない天然性抗菌剤を好ましく使用することができる。より具体的には、天然性抗菌剤であるキトサン、アリルイソチオシアネート、ヒノキチオール、リモネン等を、包装容器内に収納することができる。 There is no particular limitation on the antibacterial agent, and substances having an antibacterial effect can be appropriately used, but there is relatively little concern about the effects on fruits and vegetables including edible mushrooms and the use of them near foods such as fruits and vegetables. An antibacterial agent can be preferably used. More specifically, natural antibacterial agents such as chitosan, allyl isothiocyanate, hinokitiol, limonene can be stored in the packaging container.
以下、本出願人が実施した試験とその結果を参照しながら、本発明を具体的に説明する。なお、本発明はいかなる意味においても、以下の試験例によって限定されるものではない。 Hereinafter, the present invention will be specifically described with reference to the tests conducted by the applicant and the results thereof. The present invention is not limited to the following test examples in any sense.
本試験で使用した各包装体の酸素透過度及び製造方法は、以下のとおりである。
厚さ30μmの防曇性二軸延伸ポリプロピレン(防曇OPP)フィルムに熱針で約100μmの孔1個、3個の孔(210mmピッチ間隔内)を有するフィルムをそれぞれ作成した。
フィルムの酸素透過度を測定するため、孔開け加工を行っていない孔無しのフィルム及び、上記孔開けを行った各フィルムを用いて210mm×150mmサイズの各袋(包装体)をヒートシールして作製した。
そして、各袋に窒素を充填して初期酸素濃度を測定した。数時間放置後に再度酸素濃度を測定した。さらに袋内の空気量を測定し、酸素透過度を算出するための上記計算式に基づいて各フィルムの酸素透過度を見積もった。その結果、各フィルムの酸素透過度は、孔無しフィルムで1,081cc/m2・day・atm、孔1個フィルムで1,227cc/m2・day・atm、孔3個フィルムで1,623cc/m2・day・atmであった。
次に、上記の孔開け加工を行っていない孔無しのフィルムと孔開け加工を行ったフィルムを用い、サイズが200mm×380mm(最大容積:4.1L)の三方シール袋を作成し、各袋に食用キノコであるシメジを230g詰め、上部をヒートシールした。これら袋のうち、穴無しフィルムを用いた袋を包装体1、孔1個フィルムを用いた袋を包装体2、孔3個フィルムを用いた袋を包装体3とし、これらを測定試料とした。
なお、酸素濃度及び二酸化炭素濃度の測定にあたっては、株式会社島津製作所製ガスクロマトグラフ装置GC2014を用いて、各包装体内部の酸素濃度及び二酸化炭素濃度を測定した。
The oxygen permeability and manufacturing method of each package used in this test are as follows.
Films having one hole of about 100 μm and three holes (within 210 mm pitch interval) were formed on a 30 μm thick anti-fog biaxially oriented polypropylene (anti-fog OPP) film with a hot needle.
In order to measure the oxygen permeability of the film, heat-seal each bag (packaging body) of 210 mm x 150 mm size using a non-perforated film not perforated and each perforated film. It was made.
Then, each bag was filled with nitrogen and the initial oxygen concentration was measured. After being left for several hours, the oxygen concentration was measured again. Further, the amount of air in the bag was measured, and the oxygen permeability of each film was estimated based on the above calculation formula for calculating the oxygen permeability. As a result, the oxygen permeability of each film is 1,081 cc/m 2 ·day·atm for non-perforated film, 1,227 cc/m 2 ·day·atm for 1 perforated film, 1,623 cc for 3 perforated film. /M 2 ·day·atm.
Next, using the non-perforated film without perforation and the perforated film, a three-sided sealed bag with a size of 200 mm × 380 mm (maximum volume: 4.1 L) was prepared, and each bag was prepared. Then, 230 g of edible mushroom shimeji mushroom was packed and the upper part was heat-sealed. Among these bags, the bag using the film without holes was used as the packaging body 1, the bag using the film with 1 hole was used as the packaging body 2, and the bag using the film with 3 holes was used as the packaging body 3, and these were used as measurement samples. ..
In measuring the oxygen concentration and the carbon dioxide concentration, a gas chromatograph GC2014 manufactured by Shimadzu Corporation was used to measure the oxygen concentration and the carbon dioxide concentration inside each package.
(例1)
上記包装体1を測定試料として、5℃に設定した冷蔵庫内に保管し、経日で袋内部の酸素濃度及び二酸化炭素濃度を測定し、袋内部のシメジの外観(色相、萎え及びドリップ)を評価した。
なお、外観評価は、5段階の官能評価とし、具体的には、ランク5(商品性問題なし)、ランク4(商品性はあるが品質低下傾向)、ランク3(商品性はあるが品質低下が大きい)、ランク2(ほぼ商品性なし)、ランク1(商品性なし)とした。なお、評価結果の客観性を担保するため、官能評価は3名で実施し、評価結果を平均してランク付けした。
表1及び表2に、その結果を示す。
表1から、5℃で冷蔵保管した場合に、包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度がいずれも10%以上25%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が28.7%であり15%以上であることが読み取れる。
そして、このように、5℃で冷蔵保管した場合、表2から、後述の例2及び例3に比べて、色相、萎え、ドリップの点で、いずれも経時的な品質劣化が抑制されていることが読み取れる。
(Example 1)
The above-mentioned package 1 is stored as a measurement sample in a refrigerator set at 5° C., the oxygen concentration and carbon dioxide concentration inside the bag are measured over time, and the appearance (hue, wilting and drip) of the shimeji inside the bag is measured. evaluated.
It should be noted that the appearance evaluation is a 5-level sensory evaluation, and specifically, rank 5 (no commercial problem), rank 4 (commercial property but quality deterioration tendency), rank 3 (commercial property but quality deterioration). Is large), rank 2 (almost no commercial property), and rank 1 (no commercial property). In addition, in order to ensure the objectivity of the evaluation results, the sensory evaluation was performed by three people, and the evaluation results were averaged and ranked.
The results are shown in Tables 1 and 2.
From Table 1, when stored refrigerated at 5° C., the internal carbon dioxide concentration on the 11th day after sealing the packaging body and on the 32nd day after sealing the packaging body is 10% or more and 25% or less. It can be read that the internal carbon dioxide concentration decreases from 11 days after the sealing to 32 days after the sealing of the package, and the absolute value of the change rate is 28.7%, which is 15% or more.
In this way, in the case of refrigerated storage at 5° C., as shown in Table 2, as compared with Examples 2 and 3 described later, deterioration in quality over time is suppressed in terms of hue, shrinkage, and drip. Can be read.
(例2)
上記包装体2を測定試料として、例1と同様に、5℃に設定した冷蔵庫内に保管し、経日で袋内部の酸素濃度及び二酸化炭素濃度を測定し、袋内部のシメジの外観(色相、萎え及びドリップ)を評価した。
なお、外観評価は、例1と同様に、5段階の官能評価とし、具体的には、ランク5(商品性問題なし)、ランク4(商品性はあるが品質低下傾向)、ランク3(商品性はあるが品質低下が大きい)、ランク2(ほぼ商品性なし)、ランク1(商品性なし)とした。また、評価結果の客観性を担保するため、官能評価は3名で実施し、評価結果を平均してランク付けした。
表1及び表2に、その結果を示す。
表1から、5℃で冷蔵保管した場合に、包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度がいずれも10%以上25%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するが、その変化率の絶対値は10.8%であって、15%以上ではないことが読み取れる。
そして、このように、5℃で冷蔵保管した場合、表2から、前述の例1に比べて、色相、萎え、ドリップの点で、いずれも経時的な品質劣化が進行していることが読み取れる。
(Example 2)
The packaging 2 was used as a measurement sample and stored in a refrigerator set at 5° C. in the same manner as in Example 1, and the oxygen concentration and carbon dioxide concentration inside the bag were measured over time, and the appearance of the shimeji inside the bag (hue , Wilting and drip) were evaluated.
The appearance evaluation is a sensory evaluation of 5 levels as in Example 1, and specifically, rank 5 (no problem with commercial property), rank 4 (commercial property but quality deterioration tendency), rank 3 (product) Although there is a property, the quality deterioration is large), Rank 2 (almost no commercial property), and Rank 1 (no commercial property). Further, in order to ensure the objectivity of the evaluation results, the sensory evaluation was carried out by three persons, and the evaluation results were averaged and ranked.
The results are shown in Tables 1 and 2.
From Table 1, when stored refrigerated at 5° C., the internal carbon dioxide concentration on the 11th day after sealing the packaging body and on the 32nd day after sealing the packaging body is 10% or more and 25% or less. It can be read that the internal carbon dioxide concentration decreases from 11 days after the sealing to 32 days after the packaging is sealed, but the absolute value of the change rate is 10.8% and not 15% or more.
Then, in this way, when refrigerated and stored at 5° C., it can be seen from Table 2 that the deterioration of quality with time progresses in terms of hue, wilting, and drip in comparison with Example 1 described above. ..
(例3)
上記包装体3を測定試料として、例1と同様に、5℃に設定した冷蔵庫内に保管し、経日で袋内部の酸素濃度及び二酸化炭素濃度を測定し、袋内部のシメジの外観(色相、萎え及びドリップ)を評価した。
なお、外観評価は、例1と同様に、5段階の官能評価とし、具体的には、ランク5(商品性問題なし)、ランク4(商品性はあるが品質低下傾向)、ランク3(商品性はあるが品質低下が大きい)、ランク2(ほぼ商品性なし)、ランク1(商品性なし)とした。また、評価結果の客観性を担保するため、官能評価は3名で実施し、評価結果を平均してランク付けした。
表1及び表2に、その結果を示す。
表1から、5℃で冷蔵保管した場合に、包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度がいずれも15%以上25%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するが、その変化率の絶対値は6.4%であって、15%以上ではないことが読み取れる。
そして、このように、5℃で冷蔵保管した場合、表2から、前述の例1に比べて、色相、萎え、ドリップの点で、いずれも経時的な品質劣化が進行していることが読み取れる。
(Example 3)
The above-mentioned package 3 is used as a measurement sample and stored in a refrigerator set at 5° C. in the same manner as in Example 1, and the oxygen concentration and the carbon dioxide concentration inside the bag are measured over time, and the appearance of the shimeji inside the bag (hue , Wilting and drip) were evaluated.
The appearance evaluation is a sensory evaluation of 5 levels as in Example 1, and specifically, rank 5 (no problem with commercial property), rank 4 (commercial property but quality deterioration tendency), rank 3 (product) Although there is a property, the quality deterioration is large), Rank 2 (almost no commercial property), and Rank 1 (no commercial property). Further, in order to ensure the objectivity of the evaluation results, the sensory evaluation was carried out by three persons, and the evaluation results were averaged and ranked.
The results are shown in Tables 1 and 2.
From Table 1, when stored refrigerated at 5° C., the internal carbon dioxide concentration on the 11th day after sealing the package and on the 32nd day after sealing the package was 15% or more and 25% or less. The internal carbon dioxide concentration decreases from 11 days after the sealing to 32 days after the sealing of the package, but it can be read that the absolute value of the change rate is 6.4% and not 15% or more.
Then, in this way, when refrigerated and stored at 5° C., it can be seen from Table 2 that the deterioration of quality with time progresses in terms of hue, wilting, and drip in comparison with Example 1 described above. ..
本発明の包装体は、包装容器内にシメジ等の食用キノコを含む青果物を収納してなる包装体において、当該包装体内のシメジ等の食用キノコに特徴的且つ経時的な品質劣化、すなわち、色相変化、萎え、及びドリップの発生を、包装体の封止後、比較的長期間にわたって抑制できるなど、実用上高い価値を有する技術的効果を実現するものであり、食品加工、流通、外食などの産業の各分野において高い利用可能性を有する。 The package of the present invention is a package in which fruits and vegetables containing edible mushrooms such as shimeji mushrooms are stored in a packaging container, and characteristic deterioration with time of edible mushrooms such as shimeji mushrooms in the package, that is, hue, Achieves technical effects with high practical value, such as suppressing changes, shrinkage, and drip generation for a relatively long period after the packaging is sealed, such as food processing, distribution, and eating out. It has high availability in various fields of industry.
Claims (10)
5℃で冷蔵保管した場合に、
包装体の封止後11日から包装体の封止後32日までの少なくとも一部の期間で、内部二酸化炭素濃度が16.7%以上22.3%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が15%以上28.7%以下である、包装体。 A package in which fruits and vegetables containing edible mushrooms are stored in a packaging container formed by fusing two polymer films on top of each other or one polymer film in a folded state. ,
When stored refrigerated at 5℃,
The internal carbon dioxide concentration is 16.7% or more and 22.3% or less in at least a part of the period from 11 days after the packaging is sealed to 32 days after the packaging is sealed, and after the packaging is sealed. A package in which the internal carbon dioxide concentration decreases from 11 days to 32 days after the packaging is sealed, and the absolute value of the change rate is 15% or more and 28.7% or less.
5℃で冷蔵保管した場合に、
包装体の封止後11日と包装体の封止後32日の内部二酸化炭素濃度がいずれも16.7%以上22.3%以下であり、包装体の封止後11日から包装体の封止後32日にかけて内部二酸化炭素濃度が減少するとともに、その変化率の絶対値が15%以上28.7%以下である、請求項1に記載の包装体。 A package in which fruits and vegetables containing edible mushrooms are stored in a packaging container formed by fusing two polymer films on top of each other or one polymer film in a folded state. ,
When stored refrigerated at 5℃,
The internal carbon dioxide concentration on both the 11th day after the sealing of the package and the 32nd day after the sealing of the package was 16.7% or more and 22.3% or less. The package according to claim 1, wherein the internal carbon dioxide concentration decreases over 32 days after the sealing, and the absolute value of the change rate is 15% or more and 28.7% or less.
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JPS6094056A (en) * | 1983-10-27 | 1985-05-27 | Kuraray Chem Kk | Bag for preserving broccoli sprouts |
JP3090361B2 (en) * | 1991-12-05 | 2000-09-18 | 住友ベークライト株式会社 | Mushroom package |
JP3358268B2 (en) * | 1994-02-07 | 2002-12-16 | 凸版印刷株式会社 | Freshness preserving packaging material for mushrooms and method of preserving freshness |
JP4211017B2 (en) * | 1999-02-10 | 2009-01-21 | ホクト株式会社 | Shimeji mushroom packaging |
JP2005287434A (en) * | 2004-04-01 | 2005-10-20 | Chisso Corp | Method for circulating vegetable and fruit |
JP5007623B2 (en) * | 2007-08-04 | 2012-08-22 | 三菱化学株式会社 | Freshness preservation material |
JP2014208544A (en) * | 2012-12-28 | 2014-11-06 | 住友ベークライト株式会社 | Method of manufacturing packaging bag for keeping freshness of garden stuff |
MY182299A (en) * | 2012-12-28 | 2021-01-18 | Shubham Chandra | Breathable container for fruits and vegetables |
JP2015093694A (en) * | 2013-11-11 | 2015-05-18 | 住友ベークライト株式会社 | Garden stuff packing bag and garden stuff packing body |
CN103583670B (en) * | 2013-11-13 | 2016-04-20 | 中国农业科学院农产品加工研究所 | A kind of method for storing and refreshing of fresh white fungus |
JP6345440B2 (en) * | 2014-03-03 | 2018-06-20 | 東ソー株式会社 | Non-stretch antifogging laminated film and packaging bag comprising the same |
JP2017030806A (en) * | 2015-07-31 | 2017-02-09 | 有限会社中島工業 | Breathable film for packaging garden stuff, and breathable bag for packaging garden stuff |
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CN105767142A (en) * | 2016-03-17 | 2016-07-20 | 华南理工大学 | Preservation method of fresh plants by combination of vacuum pre-cooling and acidic electrolyzed oxidizing water |
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