JP2020193038A - Manufacturing method of freeze-dried product in packaging container - Google Patents

Manufacturing method of freeze-dried product in packaging container Download PDF

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JP2020193038A
JP2020193038A JP2020090243A JP2020090243A JP2020193038A JP 2020193038 A JP2020193038 A JP 2020193038A JP 2020090243 A JP2020090243 A JP 2020090243A JP 2020090243 A JP2020090243 A JP 2020090243A JP 2020193038 A JP2020193038 A JP 2020193038A
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freeze
dried
dried product
container
drying
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恵子 米屋
Keiko Yoneya
恵子 米屋
寛幸 香川
Hiroyuki Kagawa
寛幸 香川
吉松 明文
Akifumi Yoshimatsu
明文 吉松
太 田中
Futoshi Tanaka
太 田中
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Mc Freeze Drying Foods Co Ltd
Mitsubishi Corp Life Sciences Ltd
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Mc Freeze Drying Foods Co Ltd
Mitsubishi Corp Life Sciences Ltd
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Abstract

To provide a manufacturing method of a freeze-dried product in a packaging container using a vacuum freeze-drying method, which can manufacture a freeze-dried product of good quality in a controlled process by solving a problem of scattering of fine powder from a product to be freeze-dried or a problem of breakage of the freeze-dried product when the freeze-dried product is transferred from a vacuum freeze-drying tray to the packaging container, which occurs in freeze vacuum dry processing.SOLUTION: Provided is a manufacturing method of a freeze-dried product in a packaging container which solves the problem by: forming, with the packaging container itself storing the freeze-dried product, a vacuum freeze-drying tray used in a freeze vacuum dry processing process of a product to be freeze-dried in the manufacturing of the freeze-dried product in the packaging container so as to omit a process of transferring the freeze-dried object from the vacuum freeze-drying tray to the packaging container; and performing the freeze vacuum dry processing in a state in which an opening of the packaging container storing the product to be freeze-dried is sealed with a moisture-permeable film, in the freeze vacuum dry processing of the product to be freeze-dried.SELECTED DRAWING: None

Description

本発明は、容器入り凍結乾燥物の製造方法、特に、真空凍結乾燥法を用いた容器入り凍結乾燥物、該容器入り凍結乾燥物を用いた容器入り凍結乾燥製品の製造方法、及びそのための改良された真空凍結乾燥法に関する。 The present invention relates to a method for producing a lyophilized product in a container, particularly a lyophilized product in a container using the vacuum freeze-drying method, a method for producing a lyophilized product in a container using the freeze-dried product in a container, and an improvement therefor. Regarding the vacuum freeze-drying method.

飲食品や、薬品等の材料、製品の調製に際して、各種、乾燥方法が採用されている中で、凍結乾燥法(真空凍結乾燥法:freeze dry)は、乾燥のための加熱等による乾燥物の組織や成分の変質や、破壊を回避する乾燥方法として、広く利用されている。特に、飲食品のような分野においては、熱による有用成分や、味、色、香りの変化を極力回避する目的で、更には、真空凍結乾燥により得られる有用な物性(多孔質状)を利用する目的で、真空凍結乾燥法の利用が拡大している。また、薬品材料の調製に際しても、組織や、成分の劣化を回避する乾燥方法として、特に、熱的に不安定な物質等の有効な乾燥方法として、その利用が図られている。 Among various drying methods used in the preparation of foods and drinks, materials such as chemicals, and products, the freeze-drying method (vacuum freeze-drying method: freeze dry) is a dried product obtained by heating for drying. It is widely used as a drying method to avoid alteration and destruction of tissues and components. In particular, in fields such as food and drink, for the purpose of avoiding changes in taste, color, and aroma as much as possible, useful components due to heat, and useful physical properties (porous) obtained by vacuum freeze-drying are used. The use of the vacuum freeze-drying method is expanding for the purpose of doing so. Further, in the preparation of chemical materials, it is used as a drying method for avoiding deterioration of tissues and components, and particularly as an effective drying method for thermally unstable substances and the like.

真空凍結乾燥法を用いて、工業的に凍結乾燥飲食品のような凍結乾燥物を製造する場合には、真空凍結乾燥に際して、真空凍結乾燥用容器(真空凍結乾燥用トレー)に対象となる食品(被凍結乾燥物)を収容し、該真空凍結乾燥用容器に収容された被凍結乾燥物に凍結、真空乾燥処理を施した後、該真空凍結乾燥用容器から固体状となった凍結乾燥物を取出し、そのまま、又は、衝撃等による凍結乾燥物の破損防止のために合成樹脂などの包装容器に収容した後、該凍結乾燥物の乾燥状態の維持のために、ピロー包装等の外装手段により、密封包装されることが行われている。 When industrially producing freeze-dried products such as freeze-dried foods and drinks using the vacuum freeze-drying method, the target food in the vacuum freeze-drying container (vacuum freeze-drying tray) during vacuum freeze-drying. (Freeze-dried product) is contained, and the freeze-dried product contained in the vacuum freeze-drying container is freeze-dried and vacuum-dried, and then solidified from the vacuum freeze-drying container. After taking it out and storing it as it is or in a packaging container such as synthetic resin to prevent damage to the freeze-dried product due to impact, etc., in order to maintain the dry state of the freeze-dried product, use an exterior means such as pillow packaging. , Sealed packaging is performed.

しかし、従来の該方法では、凍結乾燥物を、凍結、真空乾燥後、真空凍結乾燥用容器(真空凍結乾燥用トレー)から取り出す場合の衝撃によって凍結乾燥物が破損してしまう恐れの問題があり、真空凍結乾燥法を用いた、凍結乾燥物の製造工程の管理や、凍結乾燥物の歩留まり等において、該問題の回避が重要な課題となっていた。また、真空凍結乾燥を行うに際して、真空凍結乾燥のために、凍結乾燥機内を真空にする際に、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際に、被凍結乾燥物から微粉が飛散し、凍結乾燥製品の品質の低下とともに、凍結乾燥機内が、微粉により汚染されるという問題があり、該問題への対策も重要な課題となっていた。特に、凍結乾燥装置では、多種類の製品を製造することもあるので、凍結乾燥物がアレルゲンを含む場合は、飛散した微粉を洗浄、除去するための手間がかかるという問題も発生する。 However, in the conventional method, there is a problem that the freeze-dried product may be damaged by the impact when the freeze-dried product is taken out from the vacuum freeze-drying container (vacuum freeze-drying tray) after freezing and vacuum drying. In the control of the production process of the freeze-dried product and the yield of the freeze-dried product using the vacuum freeze-drying method, avoidance of the problem has been an important issue. Further, when vacuum freeze-drying is performed, when the inside of the freeze-dryer is evacuated for vacuum freeze-drying, or when the inside of the freeze-dryer is returned to atmospheric pressure after freeze-drying treatment, the freeze-dried product There is a problem that the fine powder scatters from the freeze-dried product, the quality of the freeze-dried product deteriorates, and the inside of the freeze-dryer is contaminated by the fine powder, and countermeasures against this problem have also become an important issue. In particular, since the freeze-drying apparatus may produce many kinds of products, if the freeze-dried product contains an allergen, there is a problem that it takes time and effort to wash and remove the scattered fine powder.

そこで、従来より、真空凍結乾燥法により、凍結乾燥物を製造する際に発生する、上記のような問題を解決するための方法も開示されている。例えば、特許文献1には、喫食の際に、熱湯等を注加することによって復元することができる、ブロック状の凍結乾燥食品のような、凍結乾燥品の製造方法の発明について開示されており、該凍結乾燥品の製造方法においては、凍結乾燥に際して、凍結乾燥用トレーを、合成樹脂製シートに多数の収容凹部を凹設したトレー(包装容器からなるトレー)で形成し、該凍結乾燥用トレーを用いて、被凍結乾燥物を凍結乾燥処理した後、各収容凹部を切り離して、個別の包装容器に形成し、該包装容器をピロー包装により密封包装する、凍結乾燥品の製造方法が開示されている。該凍結乾燥品の製造方法では、凍結乾燥処理に際して、凍結乾燥用トレーを、凍結乾燥後、凍結乾燥物を収容する包装容器自体で形成することにより、凍結乾燥処理後、従来法のように、凍結乾燥物を凍結乾燥用トレーから、包装容器に移し替える必要がなくなり、凍結乾燥物の製造に際して、工程の省略ができるとともに、従来法で問題となっていた、凍結乾燥物を凍結乾燥用トレーから、包装容器に移し替える際の、凍結乾燥物の破損等の問題を回避できるという利点が示されている。しかしながら、該凍結乾燥品の製造方法においては、真空凍結乾燥を行うに際して、凍結乾燥機内を真空にする際に、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際に発生する、微粉の飛散の問題や、凍結乾燥製品の品質の低下の問題等に対する対策については、未解決のままになっている。 Therefore, conventionally, a method for solving the above-mentioned problems that occurs when a freeze-dried product is produced by the vacuum freeze-drying method has also been disclosed. For example, Patent Document 1 discloses an invention of a method for producing a freeze-dried product, such as a block-shaped freeze-dried food, which can be restored by pouring hot water or the like at the time of eating. In the method for producing the freeze-dried product, the freeze-drying tray is formed by forming a tray (tray made of a packaging container) in which a large number of storage recesses are recessed in a synthetic resin sheet, and the freeze-drying product is used. Disclosed is a method for producing a freeze-dried product, which comprises freeze-drying a freeze-dried product using a tray, separating each storage recess into individual packaging containers, and sealing and packaging the packaging containers by pillow packaging. Has been done. In the method for producing a freeze-dried product, during the freeze-drying treatment, the freeze-drying tray is formed by the packaging container itself that stores the freeze-dried product after the freeze-drying, so that after the freeze-drying treatment, as in the conventional method, It is no longer necessary to transfer the lyophilized product from the lyophilized tray to the packaging container, and when manufacturing the lyophilized product, the process can be omitted and the lyophilized product can be lyophilized, which has been a problem in the conventional method. Therefore, it is shown that it is possible to avoid problems such as breakage of freeze-dried products when transferring to a packaging container. However, in the method for producing a freeze-dried product, it occurs when vacuum freeze-drying is performed, when the inside of the freeze-dryer is evacuated, or when the inside of the freeze-dryer is returned to atmospheric pressure after freeze-drying treatment. Countermeasures for the problem of scattering of fine powder and the problem of deterioration of the quality of freeze-dried products remain unsolved.

一方で、特許文献2には、真空凍結乾燥に際して、真空凍結乾燥を行っても、凍結乾燥対象物が飛散せず、真空凍結乾燥機を汚染することのない、真空凍結乾燥方法が開示されている。該真空凍結乾燥方法では、被凍結乾燥物の凍結真空乾燥処理に際して、包装袋の平均孔径が10μm〜3mm、かつ開孔面積比率が2×10−6〜8×10−2%である、高分子フィルムのような特定のフィルムで形成された真空凍結乾燥用の包装袋を用いて、被凍結乾燥物を包装し、該包装被凍結乾燥物を凍結後、真空乾燥処理を行うことにより、従来法のように、凍結乾燥用トレーを用いて、被凍結乾燥物を凍結真空乾燥処理を行うに際して、凍結乾燥機内を真空にする際に、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際に、被凍結乾燥物から微粉が飛散し、凍結乾燥製品の品質の低下とともに、凍結乾燥機内が、微粉により汚染されるという問題を回避した真空凍結乾燥方法が開示されている。しかしながら、該真空凍結乾燥方法は、特定の包装袋を用いた、包装凍結乾燥物の製造の場合しか適用することができず、凍結乾燥物を包装容器に収納、包装した容器入り凍結乾燥製品の製造方法としては、適用できないものであり、かつ、容器入り凍結乾燥製品の製造における、凍結真空乾燥処理や、乾燥処理物の包装容器への移し替えにおいて発生する問題の回避には、繋がらないものである。 On the other hand, Patent Document 2 discloses a vacuum freeze-drying method in which the freeze-drying object does not scatter and does not contaminate the vacuum freeze-dryer even if the vacuum freeze-drying is performed. There is. The vacuum freeze-drying method, upon freeze-vacuum drying process of the freeze-dried product, the average pore size of the packaging bag is 10Myuemu~3mm, and opening area ratio of 2 × 10 -6 ~8 × 10 -2 %, high Conventionally, the freeze-dried product is packaged using a vacuum freeze-drying packaging bag formed of a specific film such as a molecular film, and the package freeze-dried product is frozen and then vacuum-dried. As in the method, when freeze-drying the freeze-dried material using a freeze-drying tray, when vacuum-drying the inside of the freeze-dryer, or after freezing and vacuum-drying, the inside of the freeze-dryer is large. A vacuum freeze-drying method is disclosed that avoids the problem that fine powder is scattered from the freeze-dried product when the pressure is returned to the pressure state, the quality of the freeze-dried product is deteriorated, and the inside of the freeze-dryer is contaminated by the fine powder. However, the vacuum freeze-drying method can be applied only in the case of producing a packaged freeze-dried product using a specific packaging bag, and the freeze-dried product in a container in which the freeze-dried product is stored and packaged in a packaging container. It is not applicable as a manufacturing method, and it does not lead to avoidance of problems that occur in freeze-vacuum drying treatment and transfer of dried processed products to packaging containers in the manufacture of freeze-dried products in containers. Is.

以上のとおり、従来、真空凍結乾燥方法による凍結乾燥物の製造方法において、真空凍結乾燥を行う際に、真空凍結乾燥のために、凍結乾燥機内を真空にする際に、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際に発生する、被凍結乾燥物からの微粉飛散の問題や、凍結真空乾燥後の凍結乾燥物を、真空凍結乾燥用容器(真空凍結乾燥用トレー)から取り出し、包装容器に移し替える際の工程管理や、凍結乾燥物の破損等による凍結乾燥物の劣化や、歩留まりの問題等、真空凍結乾燥方法により凍結乾燥物の製造を行う場合に発生する問題を有効に解決する真空凍結乾燥法は、提供されないできた。該問題の解決は、例えば、凍結乾燥装置では、装置稼働の効率上、多種類の製品を製造する必要も存在し、その場合に、真空凍結乾燥時の被凍結乾燥物からの微粉飛散の問題を解決することは、該問題解決による凍結乾燥物自体の品質保持にとどまらず、例えば、従来の真空凍結乾燥法、特に、多種類の製品を製造する場合に必要とされてきた、凍結乾燥物がアレルゲンを含むような場合を考慮して、飛散した微粉を洗浄、除去する処理のような工程の手間を省略できるという、工程管理上のメリットに繋げることもでき、したがって、上記問題の解決は、製造された凍結乾燥物の品質向上のみならず、効率的な工程管理の上で、重要な課題となるものである。 As described above, in the conventional method for producing a freeze-dried product by the vacuum freeze-drying method, when vacuum freeze-drying is performed, for vacuum freeze-drying, when the inside of the freeze-dryer is evacuated, or for freezing and vacuum drying. Vacuum freeze-drying container (vacuum freeze-drying tray) for the problem of fine powder scattering from the freeze-dried material that occurs when the inside of the freeze-dryer is returned to atmospheric pressure after processing, and for the freeze-dried product after freeze-vacuum drying. Problems that occur when the freeze-dried product is manufactured by the vacuum freeze-drying method, such as process control when taking it out from the oven and transferring it to a packaging container, deterioration of the freeze-dried product due to damage to the freeze-dried product, and yield problems. A vacuum freeze-drying method that effectively solves the problem could not be provided. To solve this problem, for example, in a freeze-drying device, it is necessary to manufacture a wide variety of products in order to improve the efficiency of device operation. In that case, there is a problem of fine powder scattering from the freeze-dried material during vacuum freeze-drying. Solving the problem is not limited to maintaining the quality of the freeze-dried product itself by solving the problem. For example, the conventional vacuum freeze-drying method, particularly, the freeze-dried product that has been required for producing various kinds of products. It can also lead to the merit of process control that the labor of the process such as the process of cleaning and removing the scattered fine powder can be omitted in consideration of the case where the powder contains allergens. Therefore, the solution of the above problem can be solved. This is an important issue not only for improving the quality of the produced freeze-dried product, but also for efficient process control.

特開2003−95228号公報Japanese Unexamined Patent Publication No. 2003-95228 特開2014−43280号公報Japanese Unexamined Patent Publication No. 2014-43280

本発明の課題は、真空凍結乾燥法を用いた容器入り凍結乾燥物の製造方法において、容器入り凍結乾燥物を製造する際に障害となる、真空凍結乾燥のために、凍結乾燥機内を真空にする際に、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際に発生する、被凍結乾燥物からの微粉の飛散の問題、或いは、凍結乾燥物を、凍結、真空乾燥後、真空凍結乾燥用容器(真空凍結乾燥用トレー)から取り出し、包装容器に移し替える際の衝撃によって凍結乾燥物が破損してしまう恐れの問題等、容器入り凍結乾燥物の製造工程において発生する問題を解決し、品質の良い凍結乾燥物を、管理された工程で製造できる、改良された真空凍結乾燥法による凍結乾燥物の製造方法を提供することにある。 An object of the present invention is to create a vacuum inside the freeze-dryer for vacuum freeze-drying, which is an obstacle in producing the freeze-dried product in a container in the method for producing a freeze-dried product in a container using the vacuum freeze-drying method. The problem of fine powder scattering from the freeze-dried product, which occurs when the freeze-drying machine is returned to atmospheric pressure after freeze-drying or vacuum-drying, or after the freeze-dried product is frozen and vacuum-dried. Problems that occur in the manufacturing process of freeze-dried products in containers, such as the problem that the freeze-dried products may be damaged by the impact when they are taken out from the vacuum freeze-drying container (vacuum freeze-drying tray) and transferred to the packaging container. It is an object of the present invention to provide a method for producing a freeze-dried product by an improved vacuum freeze-drying method, which can produce a high-quality freeze-dried product in a controlled process.

本発明者らは、上記課題を解決すべく、従来の真空凍結乾燥法を用いた包装容器入り凍結乾燥物の製造方法において問題となっている、凍結真空乾燥処理時の被凍結乾燥物からの微粉の飛散の問題、及び、容器入り凍結乾燥物の調製に際して、凍結乾燥物を、凍結、真空乾燥後、真空凍結乾燥用容器(真空凍結乾燥用トレー)から取り出し、包装容器に移し替える際の衝撃によって凍結乾燥物が破損する問題、を回避する、改良された真空凍結乾燥法の開発について、鋭意検討する中で、包装容器入り凍結乾燥物の製造における、被凍結乾燥物の凍結、真空乾燥処理工程において、該工程に用いられる真空凍結乾燥用トレーを、凍結乾燥物を包装容器自体で形成することにより、凍結乾燥物を、凍結、真空乾燥後、真空凍結乾燥用容器(真空凍結乾燥用トレー)から取り出し、包装容器に移し替える工程を省略して、該工程の際に発生する衝撃によって凍結乾燥物が破損する問題を解決することができ、更に、被凍結乾燥物の凍結、真空乾燥処理に際して、被凍結乾燥物を収容した包装容器の開口部を、透湿性のフィルム(透湿性フィルム及び非透湿性フィルムを穴あけ加工したフィルム)で密封した状態で、凍結、真空乾燥処理することにより、凍結真空乾燥処理時の被凍結乾燥物からの微粉の飛散の問題を解決することができることを見い出し、本発明を完成するに至った。 In order to solve the above problems, the present inventors have a problem in a method for producing a freeze-dried product in a packaging container using a conventional vacuum freeze-drying method, from a freeze-dried product during freeze-vacuum drying treatment. When the problem of fine powder scattering and when preparing the freeze-dried product in a container, the freeze-dried product is frozen, vacuum-dried, then taken out from the vacuum freeze-drying container (vacuum freeze-drying tray) and transferred to a packaging container. While diligently studying the development of an improved vacuum freeze-drying method that avoids the problem of damage to the freeze-dried product due to impact, freezing and vacuum-drying the freeze-dried product in the production of the freeze-dried product in a packaging container. In the treatment step, the vacuum freeze-drying tray used in the step is formed by forming the freeze-dried product in the packaging container itself, so that the freeze-dried product is frozen, vacuum-dried, and then the vacuum freeze-drying container (for vacuum freeze-drying). By omitting the step of taking out from the tray) and transferring it to the packaging container, it is possible to solve the problem that the freeze-dried product is damaged by the impact generated during the step, and further, the freeze-dried product is frozen and vacuum-dried. During the treatment, the opening of the packaging container containing the freeze-dried material is sealed with a moisture-permeable film (a film obtained by drilling a moisture-permeable film and a non-breathable film), and then freeze-dried and vacuum-dried. The present invention has been completed by finding that the problem of fine powder scattering from the freeze-dried material during the freeze-vacuum drying process can be solved.

すなわち、本発明は、凍結乾燥容器に、被凍結乾燥物を収容し、該凍結乾燥容器に収容された被凍結乾燥物を、凍結及び真空乾燥処理を行うことによって、真空凍結乾燥する凍結乾燥物の製造方法において、(A)凍結乾燥容器を、被凍結乾燥物を収容する凹部を有する、上面開口した包装容器で形成し、(B)該凍結乾燥容器に、被凍結乾燥物を収容した後、該凍結乾燥容器の上面開口部を、透湿性のフィルムで密封し、(C)該透湿性のフィルムで密封され、被凍結乾燥物を収容した、凍結乾燥容器を凍結及び真空乾燥処理を行うことにより、被凍結乾燥物の真空凍結乾燥処理時の粉塵の飛散を防止し、かつ、真空凍結乾燥容器からの凍結乾燥物の包装容器への入れ替えを省略して、該入れ替え時の手間の省略と、該入れ替え時の凍結真空乾燥物の破損を防止したことを特徴とする包装容器入り凍結乾燥物の製造方法からなる。 That is, in the present invention, the freeze-dried product is placed in a freeze-dried container, and the freeze-dried product contained in the freeze-dried container is freeze-dried and vacuum-dried to vacuum freeze-dry the product. In the production method of (A), the freeze-dried product is formed of a packaging container having an open top surface having a recess for storing the freeze-dried product, and (B) after the freeze-dried product is stored in the freeze-dried product. The upper surface opening of the freeze-drying container is sealed with a moisture-permeable film, and (C) the freeze-drying container that is sealed with the moisture-permeable film and contains the freeze-dried material is freeze-dried and vacuum-dried. This prevents the scattering of dust during the vacuum freeze-drying process of the freeze-dried material, and omits the replacement of the freeze-dried product from the vacuum freeze-dried container with the packaging container, thus eliminating the time and effort required for the replacement. The method comprises a method for producing a freeze-dried product in a packaging container, which is characterized in that damage to the freeze-dried product during the replacement is prevented.

本発明の包装容器入り凍結乾燥物の製造方法は、被凍結乾燥物の真空凍結乾燥処理時の凍結乾燥物の破損や、粉塵の飛散を防止し、かつ、真空凍結乾燥容器からの凍結乾燥物の包装容器への入れ替えを省略して、該入れ替え時の手間の省略と、該入れ替え時の凍結真空乾燥物の破損を防止することにより、管理された工程で、品質の保持された包装容器入り凍結乾燥物を製造することができる。特に、本発明の包装容器入り凍結乾燥物の製造方法は、被凍結乾燥物の凍結乾燥容器への収容又は充填から製品の包装までを一貫して、好ましくは自動化された設備にて行うことが可能であり、製造工程管理上、ライン等による多数の製品を製造することに適応する、工業的にも有利な包装容器入り凍結乾燥物の製造方法を提供する。 The method for producing a freeze-dried product in a packaging container of the present invention prevents the freeze-dried product from being damaged during the vacuum freeze-drying process of the freeze-dried product and dust from scattering, and also prevents the freeze-dried product from the vacuum freeze-dried product. By omitting the replacement of the lyophilized product with the lyophilized product and preventing the freeze-dried product from being damaged during the replacement, the lyophilized product can be put into a wrapping container whose quality is maintained in a controlled process. Freeze-dried products can be produced. In particular, in the method for producing a freeze-dried product in a packaging container of the present invention, the process from the storage or filling of the freeze-dried product in the freeze-drying container to the packaging of the product can be performed consistently, preferably in an automated facility. Provided is an industrially advantageous method for producing a freeze-dried product in a packaging container, which is possible and suitable for producing a large number of products by a line or the like in terms of manufacturing process control.

本発明の包装容器入り凍結乾燥物の製造方法においては、被凍結乾燥物の凍結、真空乾燥処理に際して、真空凍結乾燥用容器(真空凍結乾燥用トレー)として用いる、被凍結乾燥物を収容する凹部を有する、上面開口した包装容器で形成した凍結乾燥容器を、該容器の凹部の上面開口部周縁に、鍔部を形成し、該開口周縁に形成された鍔部に、被凍結乾燥物を収容した後の凍結乾燥容器の上面開口部を透湿性のフィルムを接着して、密封する構造として行うことができる。 In the method for producing a freeze-dried product in a packaging container of the present invention, a recess for accommodating a freeze-dried product used as a vacuum freeze-drying container (vacuum freeze-drying tray) during freeze-drying and vacuum-drying treatment of the freeze-dried product. A freeze-drying container formed of a packaging container having an open top surface has a flange formed on the peripheral edge of the upper surface opening of the recess of the container, and the freeze-dried product is contained in the flange formed on the peripheral edge of the opening. The upper surface opening of the freeze-drying container can be sealed with a moisture-permeable film.

また、該真空凍結乾燥用容器(真空凍結乾燥用トレー)として用いる、上面開口した包装容器で形成した凍結乾燥容器の上面開口した凹部を有する包装容器を、複数個設けた構造とし、各凹部を有する包装容器間に、切り離しできる構造を形成し、真空凍結乾燥終了後に、凍結乾燥物を収容した包装容器を分離可能とする構造とすることができる。 Further, a structure is provided in which a plurality of packaging containers having a recess with an open top surface of the freeze-drying container formed of a packaging container with an open top surface used as the container for vacuum freeze-drying (tray for vacuum freeze-drying) are provided, and each recess is provided. A separable structure can be formed between the packaging containers to be provided, and the packaging container containing the freeze-dried product can be separated after the vacuum freeze-drying is completed.

本発明の包装容器入り凍結乾燥物の製造方法は、以下の(a)〜(d)の工程を有する包装容器入り凍結乾燥物の製造方法として構築することができる。
(a)包装容器により形成され、上面開口した凹部を有し、かつ該凹部の開口周縁に鍔部を有する凍結乾燥容器を用意する工程、
(b)上記(a)の容器の凹部に被凍結乾燥物を収容する工程、
(c)上記(b)の工程の後、透湿性を有するフィルムを、凍結乾燥容器の上面開口した凹部の開口周縁の鍔部に接着して、該凹部を密閉する工程、
(d)上記(c)の工程の後、包装容器形成され、被凍結乾燥物を収容し、かつ、透湿性のフィルムで密封された凍結乾燥容器を真空凍結乾燥機に収容し、真空凍結乾燥処理を行う工程、
(e)上記(d)の工程の後、容器を真空凍結乾燥機から取り出す工程。
The method for producing a freeze-dried product in a packaging container of the present invention can be constructed as a method for producing a freeze-dried product in a packaging container having the following steps (a) to (d).
(A) A step of preparing a freeze-drying container formed of a packaging container, having a recess having an opening on the upper surface, and having a collar on the peripheral edge of the opening of the recess.
(B) The step of accommodating the freeze-dried product in the recess of the container of (a) above.
(C) After the step of (b) above, a step of adhering a moisture-permeable film to the collar portion of the opening peripheral edge of the recess opened on the upper surface of the freeze-drying container to seal the recess.
(D) After the step (c) above, a lyophilization container formed into a packaging container, containing the freeze-dried material, and sealed with a moisture-permeable film is housed in a vacuum freeze-dryer and vacuum freeze-dried. The process of processing,
(E) A step of removing the container from the vacuum freeze dryer after the step (d) above.

本発明は、本発明の包装容器入り凍結乾燥物の製造方法により製造された包装容器入り凍結乾燥物を、更に、非透湿性フィルムにより、密封、包装する工程を付加することにより、包装容器入り凍結乾燥物が、非透湿性フィルムにより、密封、包装され包装体入り凍結乾燥物製品の製造方法を包含する。 The present invention is contained in a packaging container by adding a step of sealing and packaging the frost-dried product in a packaging container produced by the method for producing a frost-dried product in a packaging container of the present invention with a non-moisture permeable film. The lyophilized product includes a method for producing a lyophilized product in a package, which is sealed and packaged by a non-breathable film.

本発明は、本発明の包装容器入り凍結乾燥物が、非透湿性フィルムにより、密封、包装された包装体入り凍結乾燥物製品の製造方法において、上記、(a)〜(e)の工程を有する、包装容器入り凍結乾燥物の製造工程に、更に、(f)上記(e)の工程により製造された包装容器入り凍結乾燥物を、更に、非透湿性フィルムにより、密封、包装する工程を付加することにより、包装容器入り凍結真空乾燥物が、非透湿性フィルムにより、密封、包装された包装体入り凍結乾燥物製品の製造方法を包含する。 In the present invention, in the method for producing a freeze-dried product in a package in which the freeze-dried product in a packaging container of the present invention is sealed and packaged with a non-breathable film, the steps (a) to (e) above are performed. In addition to the step of manufacturing the freeze-dried product in the packaging container, the step of (f) the freeze-dried product in the packaging container manufactured by the above step (e) is further sealed and packaged with a non-breathable film. By adding, the freeze-vacuum-dried product in a packaging container includes a method for producing a freeze-dried product in a package, which is sealed and packaged by a non-breathable film.

本発明は、本発明の包装容器入り凍結真空乾燥物が、非透湿性フィルムにより、密封、包装された包装体入り凍結乾燥物製品の製造方法において、包装容器入り凍結乾燥物の非透湿性フィルムによる密封、包装が、真空凍結乾燥後の包装容器入り凍結乾燥物を、非透湿性フィルムにより外装するか、或いは、凍結乾燥物を収容し、透湿性フィルムを接着して密封し、真空凍結乾燥した凍結乾燥物の包装容器の上面開口部を、更に、非透湿性フィルムを接着して、密封するかして、密封、包装した、包装体入り凍結乾燥物製品の製造方法の発明を包含する。 In the present invention, in the method for producing a frozen-dried product in a package in which the frozen-vacuum dried product in a packaging container of the present invention is sealed and packaged by a non-moisture-permeable film, the non-moisture-permeable film of the frozen-dried product in a packaging container The frost-dried product in the packaging container after vacuum freeze-drying is covered with a non-moisture-permeable film, or the frost-dried product is contained, the moisture-permeable film is adhered and sealed, and the product is vacuum-freeze-dried. Including the invention of a method for producing a frozen-dried product containing a package, in which the upper opening of the packaged container for the frozen-dried product is further sealed by adhering a non-breathable film and sealed. ..

本発明は、真空凍結乾燥法を用いた容器入り凍結乾燥物の製造方法において、容器入り凍結乾燥物を製造する際に障害となる、真空凍結乾燥のために、凍結乾燥機内を真空にする際に、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際に発生する、被凍結乾燥物からの微粉の飛散の問題、或いは、凍結乾燥物を、凍結、真空乾燥後、真空凍結乾燥用容器(真空凍結乾燥用トレー)から取り出し、包装容器に移し替える際の衝撃によって凍結乾燥物が破損してしまう恐れの問題等、容器入り凍結乾燥物の製造工程において発生する問題を解決し、品質の良い凍結乾燥物を、管理された工程で製造できる、改良された真空凍結乾燥法による凍結乾燥物の製造方法を提供する。本発明の真空凍結乾燥法による凍結乾燥物の製造方法において、容器への収容又は充填から製品の包装までを一貫して、好ましくは自動化された設備にて行うことが可能であり、製造工程管理上、ライン等による多数の製品を製造することに適応する、工業的にも有利な包装容器入り凍結乾燥物の製造方法を提供する。 According to the present invention, in the method for producing a freeze-dried product in a container using the vacuum freeze-drying method, when the inside of the freeze-dryer is evacuated for vacuum freeze-drying, which is an obstacle in producing the freeze-dried product in a container. Or, the problem of fine powder scattering from the freeze-dried material that occurs when the inside of the freeze-dryer is returned to atmospheric pressure after freeze-drying or vacuum-drying, or the freeze-dried product is frozen, vacuum-dried, and then vacuum-dried. Solves problems that occur in the manufacturing process of freeze-dried products in containers, such as the problem that the freeze-dried products may be damaged by the impact when they are taken out from the freeze-drying container (vacuum freeze-drying tray) and transferred to the packaging container. Provided is a method for producing a freeze-dried product by an improved vacuum freeze-drying method capable of producing a high-quality freeze-dried product in a controlled process. In the method for producing a freeze-dried product by the vacuum freeze-drying method of the present invention, it is possible to consistently perform from storage or filling in a container to packaging of a product, preferably in an automated facility, and control the manufacturing process. Above, to provide an industrially advantageous method for producing a freeze-dried product in a packaging container, which is suitable for producing a large number of products by a line or the like.

本発明の改良された包装容器入り凍結乾燥物の製造方法の利点について、列挙すると、
(1)本発明の包装容器入り凍結乾燥物の製造方法により、凍結真空乾燥処理時の凍結乾燥物の飛散による凍結乾燥装置内の汚染、凍結乾燥物の破片や微粉のトレー外壁への付着、該破片や微粉のピロー包装体の圧着部分への付着によるピロー包装体密封時の圧着不良等を回避して、凍結乾燥処理から製品の包装までを一貫して行うことのできる方法を提供することができる。
(2)本発明の包装容器入り凍結乾燥物の製造方法により製造された、凍結乾燥物の収容された包装体は、凍結乾燥物が該容器内に保持されるため、外装に密封された後、外部からの衝撃を受けにくく、破損が生じにくいという利点がある。
(3)本発明の包装容器入り凍結乾燥物の製造方法においては、複数の凍結乾燥用の容器の凹部に異なる種類の被凍結乾燥物を収容した場合であっても、容器の凹部を被覆する透湿性のフィルムによって凍結乾燥物からの微粉等の飛散が防止されるため、凍結乾燥物同士が混在する恐れがない。したがって、複数の凹部を有する凍結乾燥用容器に、異なる種類の凍結乾燥物の収容された包装体を調製することができ、しかも、切離の仕方によっては、種類の異なる凍結乾燥物を有する複数の容器を一つの外装に収容することも可能となる。
(4)本発明の包装容器入り凍結乾燥物の製造方法において、凍結真空乾燥処理に際して、容器の凹部を被覆する透湿性のフィルムは、容器内部からの微粉の飛散を防止するだけでなく、外部からの異物の混入も防ぐことができる。このため、製造を衛生的に行うことができる上、製造設備の自動化も、し易くなる。更に、微粉による容器内の汚染が少ないことから容器内の洗浄作業も容易になり、自動化における作業効率の向上が期待できる。
The advantages of the improved method for producing a lyophilized product in a packaging container of the present invention are listed below.
(1) According to the method for producing a freeze-dried product in a packaging container of the present invention, contamination in the freeze-drying apparatus due to scattering of the freeze-dried product during the freeze-vacuum drying process, adhesion of the freeze-dried product to the outer wall of the tray, and fine powder. To provide a method capable of consistently performing from freeze-drying treatment to product packaging while avoiding crimping defects at the time of sealing the pillow packaging due to adhesion of the fragments and fine powder to the crimping portion of the pillow packaging. Can be done.
(2) The package containing the freeze-dried product produced by the method for producing the freeze-dried product in a packaging container of the present invention is sealed on the exterior because the freeze-dried product is held in the container. It has the advantage of being less susceptible to external impact and less likely to be damaged.
(3) In the method for producing a freeze-dried product in a packaging container of the present invention, even when different types of freeze-dried products are contained in the recesses of a plurality of freeze-dried containers, the recesses of the container are covered. Since the moisture-permeable film prevents fine powder and the like from being scattered from the freeze-dried product, there is no risk of the freeze-dried products being mixed with each other. Therefore, it is possible to prepare a package containing different types of lyophilized products in a lyophilized container having a plurality of recesses, and moreover, a plurality of lyophilized products having different types depending on the cutting method. It is also possible to store the container in one exterior.
(4) In the method for producing a freeze-dried product in a packaging container of the present invention, the moisture-permeable film covering the concave portion of the container not only prevents the scattering of fine powder from the inside of the container but also the outside during the freeze-vacuum drying treatment. It is also possible to prevent foreign matter from being mixed in. Therefore, the manufacturing can be performed hygienically, and the automation of the manufacturing equipment can be facilitated. Further, since the inside of the container is less contaminated by fine powder, the cleaning work inside the container becomes easy, and improvement of work efficiency in automation can be expected.

図1は、本発明に用いられる凍結真空乾燥容器を上から見た図である。図中、「1」は容器の凹部を示し(本図はドーム状の場合を例示)、「2」は開口周縁部を示し、「3」は鍔部を示す。(以下、同じ)FIG. 1 is a top view of the freeze-vacuum drying container used in the present invention. In the figure, "1" indicates a concave portion of the container (this figure illustrates the case of a dome shape), "2" indicates an opening peripheral portion, and "3" indicates a flange portion. (same as below) 図2は、本発明に用いられる凍結真空乾燥容器を横から見た図である。FIG. 2 is a side view of the freeze-vacuum drying container used in the present invention. 図3は、本発明に用いられる凍結真空乾燥容器に、被凍結乾燥物4を充填し、透湿性のフィルム5で密封した状態を示す図である。FIG. 3 is a diagram showing a state in which the freeze-vacuum drying container used in the present invention is filled with the freeze-dried product 4 and sealed with a moisture-permeable film 5. 図4は、本発明に用いられる凍結真空乾燥容器であって、凹部を複数有する容器(本図は6個の場合を例示)を上から見た図である。FIG. 4 is a freeze-vacuum drying container used in the present invention, which is a top view of a container having a plurality of recesses (this figure illustrates the case of 6). 図5は、本発明に用いられる凍結真空乾燥容器であって、凹部を複数有する容器(本図は3列の場合を例示)を横から見た図である。FIG. 5 is a side view of the freeze-vacuum drying container used in the present invention, which has a plurality of recesses (this figure exemplifies the case of three rows).

本発明は、凍結乾燥容器に、被凍結乾燥物を収容し、該凍結乾燥容器に収容された被凍結乾燥物を、凍結及び真空乾燥処理を行うことによって、真空凍結乾燥する凍結乾燥物の製造方法において、(A)凍結乾燥容器を、被凍結乾燥物を収容する凹部を有する、上面開口した包装容器で形成し、(B)該凍結乾燥容器に、被凍結乾燥物を収容した後、該凍結乾燥容器の上面開口部を、透湿性のフィルムで密封し、(C)該透湿性のフィルムで密封され、被凍結乾燥物を収容した、凍結乾燥容器を凍結及び真空乾燥処理を行うことにより、被凍結乾燥物の真空凍結乾燥処理時の凍結乾燥物の破損や、粉塵の飛散を防止し、かつ、真空凍結乾燥容器からの凍結乾燥物の包装容器への入れ替えを省略して、該入れ替え時の手間の省略と、該入れ替え時の凍結真空乾燥物の破損を防止したことを特徴とする包装容器入り凍結乾燥物の製造方法からなる。 According to the present invention, a freeze-dried product is stored in a freeze-dried container, and the freeze-dried product contained in the freeze-dried container is freeze-dried and vacuum-dried to produce a freeze-dried product. In the method, (A) the freeze-dried container is formed of a packaging container having an open top surface having a recess for containing the freeze-dried product, and (B) the freeze-dried product is stored in the freeze-dried product, and then the freeze-dried product is contained. The upper surface opening of the freeze-drying container is sealed with a moisture-permeable film, and (C) the freeze-drying container which is sealed with the moisture-permeable film and contains the freeze-dried material is freeze-dried and vacuum-dried. , Prevents damage to the freeze-dried product and scattering of dust during the vacuum freeze-drying process of the freeze-dried product, and omits the replacement of the freeze-dried product from the vacuum freeze-dried container with the packaging container. It comprises a method for producing a freeze-dried product in a packaging container, which is characterized in that time and effort are omitted and damage to the freeze-dried product during the replacement is prevented.

(a)凹部を有し、かつ該凹部の開口周縁に鍔部を有する凍結乾燥容器
本発明に用いられる被凍結乾燥物を充填する凍結真空乾燥用の容器は、通常、凍結乾燥物を収納、包装するために用いられる包装容器を用いることができ、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等の通常、包装容器の形成材料として用いられている、合成樹脂製シートに、常法に準じて、単数又は複数の凹部1を設けたものを挙げることができる。凹部1を設ける際、凹部の開口周縁部2に鍔部3を設け、凍結真空乾燥に際して、透湿性のフィルムを貼着する構造とすることができる。図4及び図5のように、凹部1を複数設ける場合には、後の工程(工程e)でそれぞれの凹部1を有する容器を容易に切離できるように、鍔部3にはミシン目などの切離を容易にできる手段を設けておくことが好ましい(図示せず)。凹部1の形状は、直方体状、立方体状、円筒状、円錐状、ドーム状等いずれの形態でもよく、星形のようにデザイン性のある形状であってもよい。
(A) A freeze-drying container having a recess and a flange on the periphery of the opening of the recess The container for freeze-vacuum drying used in the present invention for filling the freeze-dried product usually stores the freeze-dried product. A packaging container used for packaging can be used, for example, a synthetic resin sheet usually used as a material for forming a packaging container such as polyethylene, polypropylene, polyethylene terephthalate, etc., according to a conventional method. Alternatively, those provided with a plurality of recesses 1 can be mentioned. When the recess 1 is provided, the flange 3 may be provided on the peripheral edge 2 of the opening of the recess, and a moisture-permeable film may be attached to the recess during freeze-vacuum drying. When a plurality of recesses 1 are provided as shown in FIGS. 4 and 5, the flange portion 3 has a perforation or the like so that the container having each recess 1 can be easily separated in a later step (step e). It is preferable to provide a means capable of facilitating the separation (not shown). The shape of the recess 1 may be any of a rectangular parallelepiped shape, a cube shape, a cylindrical shape, a conical shape, a dome shape, and the like, and may be a shape having a design such as a star shape.

凹部1の容積は、特に限定はないが、本発明の課題の一つとして、被凍結乾燥物の凍結乾燥処理から製品の包装までの一貫的な製造が可能とすることであることに鑑みると、通常の凍結乾燥飲食品1食分(1回分)に使用される凍結乾燥トレーの容積と同程度、すなわち、一つの凹部について約20〜300ml容量であることが好ましい。 The volume of the recess 1 is not particularly limited, but one of the problems of the present invention is to enable consistent production from freeze-drying treatment of the freeze-dried product to product packaging. It is preferable that the volume of the freeze-dried tray used for one serving (one serving) of a normal freeze-dried food or drink is about the same, that is, the volume of one recess is about 20 to 300 ml.

凹部1の開口周縁部に設ける鍔部3の幅は、凹部を一つ有する容器を一単位とした場合、凹部1の直径と合わせて該一単位を収容する外装に収容できる程度の幅であって、切離しにくくない程度の幅であればよい。通常、5〜30mm程度である。 The width of the flange portion 3 provided on the peripheral edge of the opening of the recess 1 is a width that can be accommodated in the exterior that accommodates the one unit together with the diameter of the recess 1 when the container having one recess is used as one unit. The width may be such that it is not difficult to separate. Usually, it is about 5 to 30 mm.

(b)凍結乾燥容器への被凍結乾燥物の収容
上記(a)の凹部に収容する被凍結乾燥物4としては、凍結乾燥可能な水を含有するものであればいずれの物でもよく、液状、半液状又は固体状の飲食品、医薬製剤等が例示される。飲食品としては、味噌汁、スープ、コーヒー等の液状物、野菜、果物、味噌、麺、米飯等の半液状又は固形状物等、特に制限はない。飲食品の中で、スープ、コーヒー、すまし汁等の固形分濃度が比較的低いものは、凍結乾燥後、飛散しやすい性質を示すため、飛散を効果的に防止できる本発明に好適に用いられる。被凍結乾燥物を容器に収容する際の量としては、該凍結乾燥容器の上面開口部の密封や製造中の移送を考慮し、容器の容量の7〜9割(70〜90%)程度の量が好ましい。
(B) Storage of freeze-dried product in freeze-drying container The freeze-dried product 4 to be stored in the recess of (a) above may be any product containing water that can be freeze-dried, and is liquid. , Semi-liquid or solid foods and drinks, pharmaceutical preparations and the like are exemplified. The food and drink is not particularly limited, such as liquid substances such as miso soup, soup and coffee, semi-liquid or solid substances such as vegetables, fruits, miso, noodles and cooked rice. Among foods and drinks, soups, coffees, sushi soups, and the like having a relatively low solid content concentration tend to scatter after freeze-drying, and are therefore preferably used in the present invention in which scattering can be effectively prevented. The amount of the freeze-dried material to be stored in the container is about 70 to 90% (70 to 90%) of the capacity of the container in consideration of sealing the upper surface opening of the freeze-dried container and transfer during manufacturing. The amount is preferred.

(c)容器の凹部部分の密閉
本発明の包装容器入り凍結乾燥物の製造方法においては、上記(b)の工程の後、凍結乾燥容器の凹部1の開口周縁部に形成した鍔部3に、透湿性のフィルム5を接着して被凍結乾燥物を容器とフィルムによって密封する。図4及び図5のように、複数の凹部を有する場合は、一枚の、又は複数の透湿性のフィルムにより各凹部を密封する。該フィルムは、被凍結乾燥物からの水分の蒸発の妨げとならない程度の透湿度を有していれば合成樹脂、天然樹脂等のいずれでもよい。また、透湿度が低いフィルムであっても、微粉が通過できない微小な孔を穿孔して透湿度を下記数値範囲に調整して用いてもよい。
(C) Sealing of the concave portion of the container In the method for producing a freeze-dried product in a packaging container of the present invention, after the step (b) above, the flange portion 3 formed on the peripheral edge of the opening of the concave portion 1 of the freeze-drying container , The moisture permeable film 5 is adhered and the lyophilized product is sealed with a container and a film. When having a plurality of recesses as shown in FIGS. 4 and 5, each recess is sealed with one or more breathable films. The film may be either a synthetic resin, a natural resin, or the like as long as it has a moisture permeability that does not hinder the evaporation of water from the freeze-dried product. Further, even if the film has a low moisture permeability, it may be used by perforating minute holes through which fine powder cannot pass and adjusting the moisture permeability within the following numerical range.

透湿性のフィルム自体は、ポリオレフィン系透湿性フィルムをはじめとして、樹脂製の透湿性フィルムなど、各種の透湿性フィルムが知られており(特開2002−316388号公報、特開2015−196529号公報、特開2015−229722号公報)、各種用途に用いられている。本発明においては、凍結真空乾燥処理に際して、包装容器の開口部を密封するために用いる透湿性のフィルムとして、該公知の透湿性フィルムから、適宜選択し用いることができる。また、非透湿性フィルムを穴あけ加工したフィルムを透湿性のフィルムとして用いることができる。透湿性フィルムの透湿度は、通常、透湿性フィルムとして用いられているものであれば、本発明で使用する透湿性のフィルムとして用いることができ、特に限定はないが、好ましくは、通気5,000(g/m2 ・24時間)以上であり、より好ましくは10,000(g/m2 ・24時間)以上、さらに好ましくは15,000(g/m2 ・24時間)以上(JIS Z 0208に準拠して、40℃、相対湿度90%の条件で測定される値)のものを用いることができる。 As the moisture-permeable film itself, various moisture-permeable films such as a polyolefin-based moisture-permeable film and a resin-made moisture-permeable film are known (Japanese Patent Laid-Open Nos. 2002-316388 and 2015-196529). , JP-A-2015-229722), and is used for various purposes. In the present invention, the moisture-permeable film used for sealing the opening of the packaging container in the freeze-vacuum drying process can be appropriately selected from the known moisture-permeable films. Further, a film obtained by drilling a non-moisture permeable film can be used as the moisture permeable film. The moisture permeability of the moisture-permeable film can be used as the moisture-permeable film used in the present invention as long as it is usually used as a moisture-permeable film, and is not particularly limited, but is preferably ventilated 5, 000 (g / m 2 · 24 hours) or more, more preferably 10,000 (g / m 2 · 24 hours) or more, more preferably 15,000 (g / m 2 · 24 hours) or more (JIS Z A value measured under the conditions of 40 ° C. and 90% relative humidity in accordance with 0208) can be used.

本発明で使用する「透湿性のフィルム」は、水蒸気が通過することができる孔を有している。かかる孔の大きさは、水蒸気が通過することができる大きさ(孔が円形である場合は直径約0.0004μm以上)である限り特に制限されず、例えば好ましくは200μm〜1mm、より好ましくは250μm〜900μm、さらに好ましくは300μm〜800μmが挙げられる。透湿性のフィルムが有する孔の大きさは、1種類であってもよいし、2種類以上であってもよい。また、孔の形状は特に制限されず、略円形、略楕円径、略三角形、略四角形、略五角形、略六角形、略八角形など、いずれであってもよいが、略円形、略楕円形が好ましく、円形、楕円形がより好ましく、円形がさらに好ましく挙げられる。透湿性のフィルムにおける孔の形状は、1種類であってもよいし、2種類以上であってもよい。また、透湿性のフィルムが有する孔の個数は特に制限されず、孔の大きさや後述の開孔率に基づいて当業者は適宜設定することができる。かかる孔の個数の具体例としては、凍結乾燥容器の上面開口部を覆う部分の透湿性のフィルムにおいて1個であっても2個以上であってもよいが、前述の部分の透湿性のフィルムの面積当たりの孔の個数として、例えば1〜96個/cm、3〜96個/cm、10〜70個/cmなどが挙げられる。また、透湿性のフィルムが有する孔は、かかるフィルムの全体に渡って存在していてもよいし、かかるフィルムの一部の範囲に存在していてもよい。 The "moisture permeable film" used in the present invention has holes through which water vapor can pass. The size of such a hole is not particularly limited as long as it is a size through which water vapor can pass (when the hole is circular, the diameter is about 0.0004 μm or more), and for example, it is preferably 200 μm to 1 mm, more preferably 250 μm. It is about 900 μm, more preferably 300 μm to 800 μm. The size of the pores of the moisture-permeable film may be one type or two or more types. The shape of the hole is not particularly limited, and may be any of substantially circular, substantially elliptical diameter, approximately triangle, approximately quadrangle, approximately pentagon, approximately hexagon, approximately octagon, etc., but is approximately circular or approximately elliptical. Is preferable, circular and elliptical shapes are more preferable, and circular shapes are even more preferable. The shape of the pores in the moisture-permeable film may be one type or two or more types. Further, the number of holes possessed by the moisture-permeable film is not particularly limited, and those skilled in the art can appropriately set the number of holes based on the size of the holes and the aperture ratio described later. As a specific example of the number of such holes, the moisture-permeable film in the portion covering the upper surface opening of the freeze-drying container may have one or two or more, but the moisture-permeable film in the above-mentioned portion. Examples of the number of holes per area of 1 to 96 holes / cm 2 , 3 to 96 holes / cm 2 , 10 to 70 holes / cm 2 and the like can be mentioned. Further, the pores of the moisture-permeable film may be present throughout the film, or may be present in a part of the film.

本発明における「透湿性のフィルムの開孔率(%)」とは、透湿性のフィルムのうち、凍結乾燥容器の凹部の空間に接する部分の面積(ただし、その部分のフィルムに孔が空いていないと仮定した場合の前述の部分の面積を意味する)に対する、前述の部分に実際に含まれている全ての孔の面積の合計の割合(%)を意味する。透湿性のフィルムの開孔率は、外観の良好な凍結乾燥物を得つつ、凍結真空乾燥処理時の被凍結乾燥物からの微粉の飛散を効果的に抑制する観点から、好ましくは2%以上、より好ましくは2.2%以上、さらに好ましくは3%以上、より好ましくは3.1%以上が挙げられる。また、前述の観点から、かかる開孔率の上限として例えば、70%以下が挙げられ、50%以下、30%以下、20%以下、15%以下が好ましく挙げられる。かかる開孔率の範囲として具体的には、2〜70%、2〜50%、2〜30%、2〜20%、2〜15%が好ましく挙げられ、2.2〜70%、2.2〜50%、2.2〜30%、2.2〜20%、2.2〜15%がより好ましく挙げられ、3〜70%、3〜50%、3〜30%、3〜20%、3〜15%がさらに好ましく挙げられ、3.1〜70%、3.1〜50%、3.1〜30%、3.1〜20%、3.1〜15%がさらにより好ましく挙げられる。 The "perforation ratio (%) of the moisture-permeable film" in the present invention is the area of the moisture-permeable film in contact with the space of the recess of the freeze-drying container (however, the film in that portion has holes). It means the ratio (%) of the total area of all the holes actually included in the above-mentioned part to the area of the above-mentioned part when it is assumed that there is no such part. The aperture ratio of the moisture-permeable film is preferably 2% or more from the viewpoint of effectively suppressing the scattering of fine powder from the freeze-dried product during the freeze-vacuum drying treatment while obtaining a freeze-dried product having a good appearance. , More preferably 2.2% or more, further preferably 3% or more, and even more preferably 3.1% or more. From the above viewpoint, the upper limit of the opening ratio is, for example, 70% or less, and preferably 50% or less, 30% or less, 20% or less, and 15% or less. Specifically, the range of the aperture ratio is preferably 2 to 70%, 2 to 50%, 2 to 30%, 2 to 20%, and 2 to 15%, and 2.2 to 70%, 2. 2 to 50%, 2.2 to 30%, 2.2 to 20%, 2.2 to 15% are more preferable, and 3 to 70%, 3 to 50%, 3 to 30%, 3 to 20%. 3 to 15% is more preferably mentioned, and 3.1 to 70%, 3.1 to 50%, 3.1 to 30%, 3.1 to 20%, and 3.1 to 15% are even more preferably mentioned. Be done.

本発明で使用する「透湿性のフィルム」は、所定の孔を有する、市販されている透湿性のフィルムをそのまま使用してもよいし、所定の孔を有していないフィルムに所定の方法で孔を設けたフィルムであってもよいし、所定の孔を有する透湿性のフィルムに所定の方法でさらに孔を設けたフィルムであってもよい。フィルムに孔を設ける方法としては、熱針方式、溶融方式、打抜き方式等、特に制限されず、孔を設ける際に発生する場合があるフィルムの焦げや糸引きが凍結乾燥物製品へ混入するリスクが低く、かつ、比較的均一な形状な孔を設けることができる方法であればいずれでもよい。 As the "moisture permeable film" used in the present invention, a commercially available moisture permeable film having predetermined holes may be used as it is, or a film having no predetermined holes may be used by a predetermined method. A film having holes may be used, or a moisture-permeable film having predetermined holes may be further provided with holes by a predetermined method. The method of providing holes in the film is not particularly limited to a hot needle method, a melting method, a punching method, etc., and there is a risk that charring or stringing of the film may occur when the holes are provided in the freeze-dried product. Any method can be used as long as it is low in size and can provide holes having a relatively uniform shape.

凍結乾燥容器に透湿性フィルムを接着する方法は、容器の口部に設けられた鍔部3に該フィルムを接着する方法を採用することができるが、該方法に限定されず、凍結乾燥容器の凹部1を密閉できる方法であれば、食品に使用可能なシール剤を用いる方法、熱圧着による方法、接着剤を用いる方法、両面テープを用いる方法等のいずれの方法を用いることができるが、凍結乾燥時には真空操作による膨張でも乖離することなく、かつ喫食時には手で簡単に容器からはがすことのできる程度の強度で接着できる方法が好ましい。 As a method of adhering the moisture-permeable film to the freeze-drying container, a method of adhering the film to the flange portion 3 provided at the mouth of the container can be adopted, but the method is not limited to this method, and the freeze-drying container is not limited to this method. As long as the recess 1 can be sealed, any method such as a method using a sealant that can be used for food, a method by thermocompression bonding, a method using an adhesive, a method using double-sided tape, etc. can be used, but freezing It is preferable to use a method in which the adhesive does not dissociate even when expanded by vacuum operation during drying and can be easily peeled off from the container by hand when eating.

(d)被凍結乾燥物の凍結乾燥処理
上記(c)で調製した、被凍結乾燥物が凍結乾燥容器内に密封された状態の容器(以下、被凍結乾燥物の包装体ともいう)は、そのまま真空凍結乾燥装置等による凍結真空乾燥処理に供することができる。凍結真空乾燥処理の方法や条件は、被凍結乾燥物の種類等により異なるので適宜設定するが、好ましくは−20℃以下で凍結し、真空凍結乾燥機を用いる常法により行う。被凍結乾燥物の包装体を凍結真空乾燥処理して得られた包装体は、凍結乾燥物の収容された包装体として、次の工程に供される。
(D) Freeze-drying treatment of the freeze-dried product The container in which the freeze-dried product is sealed in the freeze-dried product (hereinafter, also referred to as a package of the freeze-dried product) prepared in the above (c) is It can be directly subjected to freeze-vacuum drying treatment using a vacuum freeze-drying device or the like. The method and conditions of the freeze-vacuum drying treatment differ depending on the type of the freeze-dried material and the like, and are appropriately set. However, it is preferably frozen at −20 ° C. or lower and carried out by a conventional method using a vacuum freeze-dryer. The package obtained by freeze-vacuum drying the package of the freeze-dried product is subjected to the next step as a package containing the freeze-dried product.

(e)凍結乾燥物の収容された包装体の扱い
上記(d)の工程で得られた凍結乾燥物の収容された包装体は、凍結真空乾燥機から取り出した後、そのまま次の工程に供してもよいが、凍結乾燥物の収容された包装体が、複数の凹部1を有する容器を有する場合は、例えば、鍔部3の中央部分で、必要に応じて設けたミシン目等に沿って、個々の凍結乾燥物の収容された凹部を有する包装体となるよう切り離す。複数の凍結乾燥物の収容された包装体となるように切り離してもよい。
(E) Handling of the package containing the freeze-dried product The package containing the freeze-dried product obtained in the above step (d) is taken out from the freeze-vacuum dryer and then directly used in the next step. However, when the package containing the freeze-dried product has a container having a plurality of recesses 1, for example, in the central portion of the flange portion 3, along a perforation or the like provided as necessary. , Separate to form a package with recesses containing individual lyophilized products. It may be separated so as to form a package containing a plurality of freeze-dried products.

(f)凍結乾燥物の収容された包装体の外装への収容
上記(e)で調製した凍結乾燥物の収容された包装体は、凹部に接着されたフィルムは透湿性を有するものであるため、通常は、吸湿を避けるため、透湿性の低い(非透湿性)のフィルムで、熱圧着等の方法で密封、外装する。また、凍結乾燥物を収容し、透湿性フィルムを接着して密封し、真空凍結乾燥した凍結乾燥物の包装容器の上面開口部を、更に、非透湿性フィルムを接着して、密封する方法を用いることができる。該方法において、複数の凹部1を有する容器を有する場合は、個々の凍結乾燥物の収容された凹部を有する包装体に切り離す前に、真空凍結乾燥した凍結乾燥物の包装容器の上面開口部を、非透湿性フィルムを接着して、密封し、該密封後、個々の凍結乾燥物の収容された包装体に切り離すことができる。
(F) Containment of the freeze-dried product in the exterior of the package The package containing the freeze-dried product prepared in (e) above has a film adhered to the recess because the film has moisture permeability. Normally, in order to avoid moisture absorption, a film having low moisture permeability (non-moisture permeability) is used to seal and exterior by a method such as thermocompression bonding. Further, a method of accommodating a freeze-dried product, adhering and sealing a moisture-permeable film, and sealing the upper surface opening of the package container of the freeze-dried product vacuum-dried by further adhering a non-breathable film. Can be used. In the method, when the container has a plurality of recesses 1, the upper surface opening of the package container for the freeze-dried lyophilized product is opened before being separated into the package having the recesses containing the lyophilized products. , The non-breathable film can be adhered, sealed, and then separated into the packaging containing the individual lyophilized products.

凍結乾燥物の収容された包装体の外装や、包装体の凹部の口部を密封する、非透湿性のフィルムとしては、透湿性の低いフィルムであればいずれでもよく、アルミニウム箔単独、アルミニウム箔と高分子物質の多層構造を有するアルミシート、ポリ塩化ビニル、ポリプロピレン、ポリエチレンラミネート等、通常、乾燥食品等の密封、包装に用いられている、非透湿性のフィルムを用いることができる。 The non-breathable film that seals the exterior of the package containing the lyophilized material and the mouth of the recess of the package may be any film having low moisture permeability, and aluminum foil alone or aluminum foil. A non-moisture permeable film usually used for sealing and packaging dried foods and the like, such as an aluminum sheet having a multilayer structure of a polymer material and a polyvinyl chloride, polypropylene, and polyethylene laminate, can be used.

以上の方法で調製される、本発明における凍結乾燥物の収容された包装体(上記dで調製される包装体)は、凍結真空乾燥処理時や、凍結乾燥物の包装容器への収容に際して起こる問題を解消して、凍結乾燥物が包装容器内に保持された、品質の良い包装容器入り凍結乾燥物を調製することができ、かつ、上記(f)に示すように、該包装容器入り凍結乾燥物を、外装等により、密封製品化することができるため、品質の良い凍結乾燥物を収容し、更に、外部からの衝撃を受けにくく、破損が生じにくい、包装容器入り凍結乾燥物製品を提供することができる。また、本発明の包装容器入り凍結乾燥物の製造方法は、その製造工程の管理においても、ライン等による、多数の製品の製造処理に適しており、本発明は、工業的にも、性能に優れた、効率的な包装容器入り凍結乾燥物の製造方法を提供する。 The package containing the freeze-dried product of the present invention prepared by the above method (the package prepared in d above) occurs during freeze-vacuum drying treatment or when the freeze-dried product is stored in the packaging container. It is possible to solve the problem and prepare a high-quality freeze-dried product in a packaging container in which the freeze-dried product is held in the packaging container, and as shown in (f) above, freeze-drying in the packaging container. Since the dried product can be made into a sealed product by the exterior, etc., the freeze-dried product in a packaging container that can accommodate high-quality freeze-dried products and is less susceptible to external impact and damage is less likely to occur. Can be provided. Further, the method for producing a lyophilized product in a packaging container of the present invention is suitable for the production process of a large number of products by a line or the like in the control of the production process, and the present invention is industrially and performance-wise. It provides an excellent and efficient method for producing a lyophilized product in a packaging container.

以下、本発明を実施例により説明するが、本発明は該実施例により限定されるものではない。 Hereinafter, the present invention will be described with reference to Examples, but the present invention is not limited to these Examples.

[包装容器入り凍結乾燥物の調製]
本発明の方法にしたがって、包装容器入り凍結乾燥物を調製した:豚肉、ねぎ、人参を具材とした味噌汁を調製し、図1及び2に示したような、厚さ0.5mm、鍔部の幅30mmの樹脂にて成型された容器(以下、成型トレイという)に50ml充填した。
[Preparation of freeze-dried products in packaging]
A lyophilized product in a packaging container was prepared according to the method of the present invention: miso soup containing pork, green onions, and carrots was prepared, and a thickness of 0.5 mm and a collar as shown in FIGS. 50 ml was filled in a container (hereinafter referred to as a molding tray) molded with a resin having a width of 30 mm.

透湿性ポリエチレンフィルムを、味噌汁を充填した成型トレイを覆うように被せ、図3のように鍔部を熱圧着機により接着した。透湿性ポリエチレンフィルムを接着した成型トレイを、−30℃の冷凍庫に入れて12時間予備凍結した。予備凍結終了後、凍結乾燥前にフィルムに穴をあけ温度感知センサーを内容物に挿し、真空度を1Torr以下にしたうえで、内容物を加熱した。一方、フィルムを貼らないこと以外は同様の操作及び処理を行ったものをコントロールとした。凍結乾燥終了後、乾燥機内を緩やかに常圧にもどした。その結果、成型トレイから透湿性フィルムがはがれることもなく、成型トレイ中で乾燥され、凍結乾燥味噌汁を得ることができた。 A moisture-permeable polyethylene film was covered so as to cover the molding tray filled with miso soup, and the collar was bonded by a thermocompression bonding machine as shown in FIG. The molding tray to which the moisture-permeable polyethylene film was adhered was placed in a freezer at −30 ° C. and pre-frozen for 12 hours. After the completion of pre-freezing and before freeze-drying, a hole was made in the film, a temperature sensor was inserted into the contents, the degree of vacuum was set to 1 Torr or less, and the contents were heated. On the other hand, the control was the one that had been subjected to the same operation and processing except that the film was not attached. After the freeze-drying was completed, the inside of the dryer was gently returned to normal pressure. As a result, the moisture-permeable film was not peeled off from the molding tray, and the film was dried in the molding tray to obtain freeze-dried miso soup.

[評価]
透湿性フィルムを貼った試験区と、該フィルムを貼らなかったコントロール区からの微粉発生の有無を、予めトレイの下に敷いておいた紙上の微粉の飛散状況により目視で、観察したところ、透湿性フィルムを貼らなかったコントロール区からは微粉発生が確認されたが、フィルムを貼った試験区からは微粉発生が認められなかった。したがって、被凍結乾燥物の凍結真空乾燥の段階、及び、凍結乾燥物を包装容器に移し替える際に発生する、凍結乾燥物の粉砕や、粉塵の発生のような問題は生じないことが、確認された。
[Evaluation]
The presence or absence of fine powder generated from the test group to which the moisture-permeable film was attached and the control area to which the film was not attached was visually observed according to the scattering state of the fine powder on the paper laid under the tray in advance. The generation of fine powder was confirmed in the control group to which the wet film was not attached, but the generation of fine powder was not observed in the test group to which the film was attached. Therefore, it has been confirmed that there are no problems such as crushing of the freeze-dried product and generation of dust that occur at the stage of freeze-vacuum drying of the freeze-dried product and when the freeze-dried product is transferred to the packaging container. Was done.

次に、包装体の密閉フィルムをはがした後、凍結乾燥味噌汁を別の容器に移し、90℃以上の熱湯を160ml注ぎ、軽くかきまぜて復元させた。乾燥品及び復元後の状態を常法にて作製した凍結乾燥味噌汁と比較した結果を表1に示す。 Next, after peeling off the sealing film of the package, the freeze-dried miso soup was transferred to another container, 160 ml of boiling water at 90 ° C. or higher was poured, and the mixture was lightly stirred to restore it. Table 1 shows the results of comparing the dried product and the state after restoration with the freeze-dried miso soup prepared by a conventional method.

Figure 2020193038
Figure 2020193038

表1に示すとおり、本発明により作製された凍結乾燥味噌汁は、常法にて作製した凍結乾燥味噌汁と品質に差は認められなかった。 As shown in Table 1, the quality of the freeze-dried miso soup prepared by the present invention was not different from that of the freeze-dried miso soup prepared by a conventional method.

[包装容器入り凍結乾燥物の調製]
成形トレイに充填するスープとして、常法に準じて調製した、たまごスープを用いる以外は、実施例1と同様の操作を行い、透湿性フィルムを貼って調製した、たまごスープの凍結乾燥物を調製した。コントロールとして、フィルムを貼らずに調製した、たまごスープの凍結乾燥物を調製した。
[Preparation of freeze-dried products in packaging]
As the soup to be filled in the molding tray, the same operation as in Example 1 was carried out except that the egg soup prepared according to a conventional method was used, and a frozen and dried egg soup prepared by attaching a breathable film was prepared. did. As a control, a freeze-dried egg soup prepared without a film was prepared.

[評価]
それぞれの成形トレイの下に敷いた紙上の微粉を目視により観察したところ、フィルムを貼らなかったコントロール区からは微粉発生が確認されたが、透湿性フィルムを貼った試験区からは、微粉発生が認められなかった。
[Evaluation]
When the fine powder on the paper laid under each molding tray was visually observed, it was confirmed that the fine powder was generated from the control group where the film was not attached, but the fine powder was generated from the test group where the moisture permeable film was attached. I was not able to admit.

[透湿性のフィルムの好ましい開孔率の検討]
凍結乾燥容器の上面開口部を密封する透湿性のフィルムの好ましい開孔率を検討するために、以下の試験を行った。
[Examination of preferable aperture ratio of moisture permeable film]
The following tests were conducted to determine the preferred pore opening ratio of the moisture permeable film that seals the top opening of the freeze-drying container.

本発明の方法にしたがって、包装容器入り凍結乾燥物を調製した:トマト、ソテーオニオン、キャベツ、鶏肉、フライドガーリック及びパセリを具材としたトマトスープを調製し、図1及び2に示したような、厚さ0.5mm、鍔部の幅30mmの樹脂にて成型された容器(成型トレイ)に50mlのトマトスープを充填した。 Frozen and dried products in packaging containers were prepared according to the method of the present invention: tomato soups containing tomatoes, saute onions, cabbage, chicken, fried garlic and parsley were prepared and as shown in FIGS. 1 and 2. , 50 ml of tomato soup was filled in a container (molding tray) molded with a resin having a thickness of 0.5 mm and a flange width of 30 mm.

開孔率が異なる11種類の市販のシート状の有孔フィルムである透湿性樹脂製フィルムを用意した(後述の表3及び表4のA〜Kの透湿性フィルム)。透湿性フィルムを、トマトスープを充填した成型トレイを覆うように被せ、図3のように鍔部を両面テープにより接着して成型トレイを密封した。透湿性フィルムで密封した成型トレイを、−30℃の冷凍庫に入れて12時間予備凍結した。予備凍結終了後、真空度を1Torr以下にしたうえで、内容物を加熱した。一方、透湿性フィルムを成型トレイに接着させるのではなく、非透湿性のシート状の無孔フィルムを成型トレイに接着させずに単に覆ったこと以外は同様の操作及び処理を行ったものをコントロールとした。 Eleven types of commercially available sheet-shaped perforated films having different aperture ratios were prepared (moisture permeable films A to K in Tables 3 and 4 described later). A moisture-permeable film was placed over the molding tray filled with tomato soup, and the collar was adhered with double-sided tape as shown in FIG. 3 to seal the molding tray. Molded trays sealed with a moisture permeable film were placed in a freezer at −30 ° C. and pre-frozen for 12 hours. After the completion of the preliminary freezing, the vacuum degree was reduced to 1 Torr or less, and the contents were heated. On the other hand, instead of adhering the moisture-permeable film to the molding tray, the non-moisture-permeable sheet-like non-perforated film is simply covered without being adhered to the molding tray, and the same operation and treatment are performed to control the film. And said.

前述の各成型トレイの凍結乾燥終了後、乾燥機内を緩やかに常圧にもどした。その結果、透湿性フィルムで密封した成型トレイにおいて、成型トレイから透湿性フィルムがはがれることもなく、成型トレイ中でトマトスープが乾燥され、凍結乾燥トマトスープを得ることができた。 After the freeze-drying of each of the above-mentioned molding trays was completed, the inside of the dryer was gently returned to normal pressure. As a result, in the molding tray sealed with the moisture-permeable film, the tomato soup was dried in the molding tray without peeling the moisture-permeable film from the molding tray, and freeze-dried tomato soup could be obtained.

[評価]
透湿性フィルムで密封した各成型トレイの透湿性フィルムをはがして、各成型トレイから凍結乾燥トマトスープを取り出し、凍結乾燥トマトスープの外観を評価した。また、コントロールの凍結乾燥トマトスープの外観も評価した。外観の評価は、3名のパネラーが凍結乾燥トマトスープの外観を目視し、以下の表2の観点及び基準に照らして行った。評価結果は、パネラーの平均的な評価を採用した。
[Evaluation]
The moisture-permeable film of each molding tray sealed with the moisture-permeable film was peeled off, and the freeze-dried tomato soup was taken out from each molding tray, and the appearance of the freeze-dried tomato soup was evaluated. The appearance of the control freeze-dried tomato soup was also evaluated. The appearance was evaluated by three panelists who visually inspected the appearance of the freeze-dried tomato soup and compared with the viewpoints and criteria in Table 2 below. As the evaluation result, the average evaluation of the panelists was adopted.

Figure 2020193038
Figure 2020193038

このような凍結乾燥物の外観の評価の結果を表3及び表4に示す。 The results of evaluation of the appearance of such freeze-dried products are shown in Tables 3 and 4.

Figure 2020193038
Figure 2020193038

Figure 2020193038
Figure 2020193038

表3及び表4の結果から、外観の良好な凍結乾燥物を得る観点から、用いる透湿性フィルム(有孔フィルム)の開孔率は、約2%以上であることが好ましく、約3%以上であることがより好ましいことが示された。 From the results of Tables 3 and 4, from the viewpoint of obtaining a freeze-dried product having a good appearance, the pore size of the moisture-permeable film (perforated film) used is preferably about 2% or more, preferably about 3% or more. Was shown to be more preferable.

[成型トレイの凹部への被凍結乾燥物の好ましい充填率の検討]
成型トレイの凹部への被凍結乾燥物の好ましい充填率を検討するために、以下の試験を行った。
[Examination of preferable filling rate of freeze-dried material in recesses of molding tray]
The following tests were conducted to examine the preferable filling rate of the freeze-dried material in the recesses of the molding tray.

本発明の方法にしたがって、包装容器入り凍結乾燥物を調製した:トマト、ソテーオニオン、キャベツ、鶏肉、フライドガーリック及びパセリを具材としたトマトスープを調製し、図1及び2に示したような、厚さ0.5mm、鍔部の幅30mmの樹脂にて成型された容器(成型トレイ)に所定量のトマトスープを充填した。トマトスープの充填量は、成型トレイの凹部の容量に対して100%(満量)又は70%とした。 Frozen and dried products in packaging containers were prepared according to the method of the present invention: tomato soups containing tomatoes, saute onions, cabbage, chicken, fried garlic and parsley were prepared and as shown in FIGS. 1 and 2. A container (molding tray) molded with a resin having a thickness of 0.5 mm and a collar width of 30 mm was filled with a predetermined amount of tomato soup. The filling amount of the tomato soup was 100% (full amount) or 70% with respect to the capacity of the concave portion of the molding tray.

透湿性フィルムを、トマトスープを充填した成型トレイを覆うように被せ、図3のように鍔部を両面テープにより接着して成型トレイを密封した。透湿性フィルムで密封した成型トレイを、−30℃の冷凍庫に入れて12時間予備凍結した。予備凍結終了後、真空度を1Torr以下にしたうえで、内容物を加熱した。前述の各成型トレイの凍結乾燥終了後、乾燥機内を緩やかに常圧にもどした。 A moisture-permeable film was placed over the molding tray filled with tomato soup, and the collar was adhered with double-sided tape as shown in FIG. 3 to seal the molding tray. Molded trays sealed with a moisture permeable film were placed in a freezer at −30 ° C. and pre-frozen for 12 hours. After the completion of the preliminary freezing, the vacuum degree was reduced to 1 Torr or less, and the contents were heated. After the freeze-drying of each of the above-mentioned molding trays was completed, the inside of the dryer was gently returned to normal pressure.

[評価]
トマトスープを成型トレイの凹部の容量に対して70%充填した場合は、成型トレイから透湿性フィルムがはがれることもなく、良好な外観の凍結乾燥トマトスープを得ることができた。一方、トマトスープを成型トレイの凹部の容量に対して100%(満量)充填した場合は、凍結乾燥した際に成型トレイから透湿性フィルムが剥離してしまい、また、凍結乾燥トマトスープには発泡が観察された。100%充填した場合は、トマトスープが透湿性フィルムの孔を塞ぐため、凍結乾燥時のトマトスープに含まれる水分の昇華が阻害されて凍結乾燥物が発泡し、その結果、透湿性フィルムが成型トレイから剥離したと考えられる。
これらの結果から、成型トレイの凹部への被凍結乾燥物の充填率はおおよそ90%以下とすることが好ましいことが示された。なお、成型トレイに必要以上に空隙を設ける必要もないため、前記充填率の下限として70%以上が好ましく挙げられる。
[Evaluation]
When the tomato soup was filled with 70% of the volume of the recesses of the molding tray, the moisture-permeable film did not peel off from the molding tray, and a freeze-dried tomato soup having a good appearance could be obtained. On the other hand, when the tomato soup is filled 100% (full amount) with respect to the capacity of the concave portion of the molding tray, the moisture-permeable film peels off from the molding tray during freeze-drying, and the freeze-dried tomato soup Foaming was observed. When 100% filled, the tomato soup closes the pores of the moisture-permeable film, which hinders the sublimation of the water contained in the tomato soup during freeze-drying and foams the freeze-dried product, resulting in molding of the moisture-permeable film. It is probable that it was peeled off from the tray.
From these results, it was shown that the filling rate of the freeze-dried product in the recesses of the molding tray is preferably about 90% or less. Since it is not necessary to provide more voids in the molding tray than necessary, 70% or more is preferably used as the lower limit of the filling rate.

[成型トレイへ被凍結乾燥物を充填した後の、成型トレイの揺れの影響の検討]
成型トレイへ被凍結乾燥物を充填した後の、成型トレイの揺れの影響を検討するために、以下の試験を行った。
[Examination of the effect of shaking of the molding tray after filling the molding tray with freeze-dried material]
The following tests were conducted to examine the effect of shaking of the molding tray after filling the molding tray with the freeze-dried product.

本発明の方法にしたがって、包装容器入り凍結乾燥物を調製した:トマト、ソテーオニオン、キャベツ、鶏肉、フライドガーリック及びパセリを具材としたトマトスープを調製し、図1及び2に示したような、厚さ0.5mm、鍔部の幅30mmの樹脂にて成型された容器(成型トレイ)に所定量のトマトスープを充填した。トマトスープの充填量は、成型トレイの凹部の容量に対して70%とした。 Frozen and dried products in packaging containers were prepared according to the method of the present invention: tomato soups containing tomatoes, saute onions, cabbage, chicken, fried garlic and parsley were prepared and as shown in FIGS. 1 and 2. A predetermined amount of tomato soup was filled in a container (molding tray) molded from a resin having a thickness of 0.5 mm and a collar width of 30 mm. The filling amount of the tomato soup was 70% with respect to the capacity of the recesses of the molding tray.

透湿性フィルムを、トマトスープを充填した成型トレイを覆うように被せ、図3のように鍔部を両面テープにより接着して成型トレイを密封した。次いで、その成型トレイを手で揺らして、トマトスープを透湿性フィルム内側に付着させた。その後、その成型トレイを、−30℃の冷凍庫に入れて12時間予備凍結した。予備凍結終了後、真空度を1Torr以下にしたうえで、内容物を加熱した。前述の成型トレイの凍結乾燥終了後、乾燥機内を緩やかに常圧にもどした。 A moisture-permeable film was placed over the molding tray filled with tomato soup, and the collar was adhered with double-sided tape as shown in FIG. 3 to seal the molding tray. The molding tray was then shaken by hand to allow the tomato soup to adhere to the inside of the breathable film. Then, the molding tray was placed in a freezer at −30 ° C. and pre-frozen for 12 hours. After the completion of the preliminary freezing, the vacuum degree was reduced to 1 Torr or less, and the contents were heated. After the freeze-drying of the molding tray described above was completed, the inside of the dryer was gently returned to normal pressure.

[評価]
成型トレイの透湿性フィルムをはがして、成型トレイから凍結乾燥トマトスープを取り出し、凍結乾燥トマトスープの外観を評価した。トマトスープの一部が透湿性フィルムの内側に付着したまま、凍結乾燥トマトスープが調製されたため、凍結乾燥トマトスープの上部に余分な凍結乾燥トマトスープ片が付着しており、明らかに外観不良であった。
この結果から、凍結乾燥物を製造する際には、成型トレイへ被凍結乾燥物を充填した後に成型トレイが大きく揺れないようにすることや、被凍結乾燥物が透湿性フィルムの内側に付着しないようにすることが、凍結乾燥物の外観不良を抑制する観点から望ましいことが示された。
[Evaluation]
The breathable film of the molding tray was peeled off, and the freeze-dried tomato soup was taken out from the molding tray, and the appearance of the freeze-dried tomato soup was evaluated. Since the frost-dried tomato soup was prepared with a part of the tomato soup attached to the inside of the breathable film, extra frost-dried tomato soup pieces were attached to the top of the frost-dried tomato soup, and the appearance was clearly poor. there were.
From this result, when producing the freeze-dried product, the molding tray is not shaken significantly after the freeze-dried product is filled in the molding tray, and the freeze-dried product does not adhere to the inside of the moisture-permeable film. It has been shown that it is desirable from the viewpoint of suppressing the appearance deterioration of the freeze-dried product.

[凍結真空乾燥処理時の微粉の飛散の程度の比較]
成型トレイを非透湿性の無孔フィルムで単に覆った場合と、成型トレイを透湿性の有孔フィルムで密封した場合とで、凍結真空乾燥処理時(すなわち、凍結乾燥機内を真空にする際、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際)の被凍結乾燥物からの微粉の飛散の程度を比較するために、以下の試験を行った。
[Comparison of the degree of scattering of fine powder during freeze-vacuum drying]
When the molding tray is simply covered with a non-breathable non-perforated film, and when the molding tray is sealed with a breathable perforated film, during the freeze-vacuum drying process (that is, when the inside of the freeze-dryer is evacuated). Alternatively, the following tests were conducted to compare the degree of scattering of fine powder from the freeze-dried material (when the inside of the freeze-dryer is returned to atmospheric pressure after freeze-drying and vacuum-drying treatment).

被凍結乾燥物からの微粉の飛散の程度をより明確に比較するために、飛散しやすい粉末原料(355μmのメッシュを通過させたかつお粉末)を成型トレイ内に充填したものを真空凍結乾燥処理して、成型トレイからの粉末原料の飛散の程度を確認した。具体的には以下のような方法で行った。 In order to more clearly compare the degree of scattering of fine powder from the freeze-dried material, a powder raw material (bonito powder passed through a 355 μm mesh) filled in a molding tray is vacuum freeze-dried. The degree of scattering of the powder raw material from the molding tray was confirmed. Specifically, the method was as follows.

図1及び2に示したような、厚さ0.5mm、鍔部の幅30mmの樹脂にて成型された容器(成型トレイ)に50mlの前述の粉末原料を充填した。粉末原料を充填した各成型トレイに、実施例3で用いた透湿性フィルム(E、Kのいずれか)を覆うように被せ、図3のように鍔部を両面テープにより接着して成型トレイを密封した。透湿性フィルムで密封した成型トレイを、−30℃の冷凍庫に入れて12時間予備凍結した。予備凍結終了後、成型トレイを真空凍結乾燥機用のトレイ(41.5cm×30cm)の上に載せ、真空度を1Torr以下にしたうえで、内容物を加熱し、真空凍結乾燥処理を行った。凍結乾燥終了後、乾燥機内を緩やかに常圧にもどした。一方、透湿性フィルムを成型トレイに接着させるのではなく、非透湿性のシート状の無孔フィルムを成型トレイに接着させずに単に覆ったこと以外は同様の操作及び処理を行ったものをコントロールとした。 As shown in FIGS. 1 and 2, a container (molding tray) molded from a resin having a thickness of 0.5 mm and a collar width of 30 mm was filled with 50 ml of the above-mentioned powder raw material. Each molding tray filled with the powder raw material is covered with the moisture-permeable film (either E or K) used in Example 3, and the collar is adhered with double-sided tape as shown in FIG. Sealed. Molded trays sealed with a moisture permeable film were placed in a freezer at −30 ° C. and pre-frozen for 12 hours. After the pre-freezing was completed, the molding tray was placed on a tray (41.5 cm × 30 cm) for a vacuum freeze-dryer, the degree of vacuum was set to 1 Torr or less, and the contents were heated to perform vacuum freeze-drying treatment. .. After the freeze-drying was completed, the inside of the dryer was gently returned to normal pressure. On the other hand, instead of adhering the moisture-permeable film to the molding tray, the non-moisture-permeable sheet-like non-perforated film is simply covered without being adhered to the molding tray, and the same operation and treatment are performed to control the film. And said.

このような真空凍結乾燥処理後、真空凍結乾燥機用のトレイから成型トレイを取り外して、真空凍結乾燥機用のトレイの表面上への粉末原料の付着を確認した。 After such a vacuum freeze-drying treatment, the molding tray was removed from the tray for the vacuum freeze-dryer, and adhesion of the powder raw material on the surface of the tray for the vacuum freeze-dryer was confirmed.

[評価]
真空凍結乾燥機用のトレイの表面上への粉末原料の付着の程度を目視することにより、凍結真空乾燥処理時の微粉の飛散量の評価を以下の表5の基準に照らして行った。
[Evaluation]
By visually observing the degree of adhesion of the powder raw material on the surface of the tray for the vacuum freeze-dryer, the amount of fine powder scattered during the freeze-vacuum drying treatment was evaluated in light of the criteria shown in Table 5 below.

Figure 2020193038
Figure 2020193038

このような微粉の飛散量の評価の結果を表6に示す。 Table 6 shows the results of evaluation of the amount of such fine powder scattered.

Figure 2020193038
Figure 2020193038

表6の結果から、透湿性フィルムで密封した成型トレイを用いた場合は、無孔フィルムで被覆した成型トレイを用いた場合と比較して、凍結真空乾燥処理時の成型トレイ内からの微粉の飛散を顕著に抑制することができることが示された。 From the results in Table 6, when the molding tray sealed with the moisture permeable film was used, the fine powder from the inside of the molding tray during the freeze-vacuum drying process was compared with the case where the molding tray coated with the non-perforated film was used. It was shown that the scattering can be remarkably suppressed.

[凍結真空乾燥処理時の被凍結乾燥物からの微粉の飛散の抑制の確認]
本発明における「透湿性フィルムで密封された包装容器」を使用した場合の、凍結真空乾燥処理時(すなわち、凍結乾燥機内を真空にする際、又は、凍結、真空乾燥処理後に、凍結乾燥機内を大気圧に戻す際)の被凍結乾燥物からの微粉の飛散の抑制の程度が、実用上も顕著な効果に相当するかを確認するために、以下の試験を行った。
[Confirmation of suppression of scattering of fine powder from freeze-dried material during freeze-vacuum drying treatment]
When the "packaging container sealed with a moisture permeable film" in the present invention is used, the inside of the freeze dryer is evacuated during the freeze-vacuum drying process (that is, when the inside of the freeze dryer is evacuated, or after the freeze-drying process. The following tests were conducted to confirm whether the degree of suppression of the scattering of fine powder from the freeze-dried material (when returning to atmospheric pressure) corresponds to a remarkable effect in practical use.

本発明の方法にしたがって、包装容器入り凍結乾燥物を調製した:常法に準じてたまごスープを調製し、図1及び2に示したような、厚さ0.5mm、鍔部の幅30mmの樹脂にて成型された容器(成型トレイ)に所定量のたまごスープを充填した。たまごスープの充填量は、成型トレイの凹部の容量に対して70%とした。 A lyophilized product in a packaging container was prepared according to the method of the present invention: an egg soup was prepared according to a conventional method, and as shown in FIGS. 1 and 2, the thickness was 0.5 mm and the width of the collar was 30 mm. A predetermined amount of egg soup was filled in a container (molding tray) molded with resin. The filling amount of the egg soup was 70% with respect to the capacity of the concave portion of the molding tray.

たまごスープを充填した各成型トレイに、実施例3で用いた透湿性フィルム(A〜Kのいずれか)を覆うように被せ、図3のように鍔部を両面テープにより接着して成型トレイを密封した。透湿性フィルムで密封した成型トレイを、−30℃の冷凍庫に入れて12時間予備凍結した。予備凍結終了後、成型トレイを真空凍結乾燥機用のトレイ(41.5cm×30cm)の上に載せ、真空度を1Torr以下にしたうえで、内容物を加熱し、真空凍結乾燥処理を行った。凍結乾燥終了後、乾燥機内を緩やかに常圧にもどした。 Each molding tray filled with egg soup is covered with the breathable film (any of A to K) used in Example 3, and the collar is adhered with double-sided tape as shown in FIG. Sealed. Molded trays sealed with a moisture permeable film were placed in a freezer at −30 ° C. and pre-frozen for 12 hours. After the pre-freezing was completed, the molding tray was placed on a tray (41.5 cm × 30 cm) for a vacuum freeze-dryer, the degree of vacuum was set to 1 Torr or less, and the contents were heated to perform vacuum freeze-drying treatment. .. After the freeze-drying was completed, the inside of the dryer was gently returned to normal pressure.

このような真空凍結乾燥処理後、真空凍結乾燥機用のトレイから成型トレイを取り外した。真空凍結乾燥機用のトレイの表面上をタンパク残留測定キット(3M Science. Applied to Life.社製;商品名「クリーントレース」(登録商標);ふき取り範囲10cm×10cm、検出限界30〜50μg)のスワブでふき取って、タンパク質の有無を確認した。 After such a vacuum freeze-drying treatment, the molding tray was removed from the tray for the vacuum freeze-dryer. On the surface of the tray for the vacuum freeze dryer, a protein residue measurement kit (manufactured by 3M Science. Applied to Life.; Trade name "Clean Trace" (registered trademark); wiping range 10 cm x 10 cm, detection limit 30 to 50 μg) It was wiped off with a swab to check for protein.

その結果、A〜Kのいずれの透湿性フィルムを用いた場合であっても、透湿性フィルムで密封した成型トレイを真空凍結乾燥処理した場合は、真空凍結乾燥機用のトレイの表面上にタンパク質は検出されなかった。これらの結果から、透湿性フィルムで密封した成型トレイを用いた場合の、凍結真空乾燥処理時の被凍結乾燥物からの微粉の飛散の抑制の程度は、実用上も顕著な効果に相当する水準であることが示された。 As a result, regardless of which of the moisture permeable films A to K is used, when the molded tray sealed with the moisture permeable film is vacuum freeze-dried, the protein is placed on the surface of the tray for the vacuum freeze dryer. Was not detected. From these results, the degree of suppression of the scattering of fine powder from the freeze-dried material during the freeze-vacuum drying process when using a molded tray sealed with a moisture-permeable film is at a level corresponding to a remarkable effect in practical use. Was shown to be.

Claims (8)

凍結乾燥容器に、被凍結乾燥物を収容し、該凍結乾燥容器に収容された被凍結乾燥物を、凍結及び真空乾燥処理を行うことによって、真空凍結乾燥する凍結乾燥物の製造方法において、(A)凍結乾燥容器を、被凍結乾燥物を収容する凹部を有する、上面開口した包装容器で形成し、(B)該凍結乾燥容器に、被凍結乾燥物を収容した後、該凍結乾燥容器の上面開口部を、透湿性のフィルムで密封し、(C)該透湿性のフィルムで密封され、被凍結乾燥物を収容した、凍結乾燥容器を凍結及び真空乾燥処理を行うことにより、被凍結乾燥物の真空凍結乾燥処理時の凍結乾燥物の破損や、粉塵の飛散を防止し、かつ、真空凍結乾燥容器からの凍結乾燥物の包装容器への入れ替えを省略して、該入れ替え時の手間の省略と、該入れ替え時の凍結真空乾燥物の破損を防止したことを特徴とする包装容器入り凍結乾燥物の製造方法。 In a method for producing a freeze-dried product, which contains the freeze-dried product in a freeze-dried container and vacuum freeze-drys the freeze-dried product contained in the freeze-dried container by performing freeze-drying and vacuum-drying treatment. A) The freeze-dried container is formed of a packaging container having an open top surface having a recess for storing the freeze-dried product, and (B) the freeze-dried product is stored in the freeze-dried product, and then the freeze-dried product is placed. The upper surface opening is sealed with a breathable film, and (C) the freeze-dried container containing the freeze-dried material, which is sealed with the breathable film, is freeze-dried and vacuum-dried. Prevents damage to the freeze-dried material during the vacuum freeze-drying process and scattering of dust, and omits the replacement of the freeze-dried product from the vacuum freeze-drying container with the packaging container, which is troublesome at the time of the replacement. A method for producing a freeze-dried product in a packaging container, which is omitted and prevents damage to the freeze-dried product during the replacement. 被凍結乾燥物を収容する凹部を有する、上面開口した包装容器で形成した凍結乾燥容器を、該容器の凹部の上面開口部周縁に、鍔部を形成し、該開口周縁に形成された鍔部に、被凍結乾燥物を収容した後の凍結乾燥容器の上面開口部を透湿性のフィルムを接着して、密封する構造としたことを特徴とする、請求項1に記載の包装容器入り凍結乾燥物の製造方法。 A freeze-dried container formed of a packaging container having an open top surface, which has a recess for accommodating the freeze-dried material, has a flange formed on the peripheral edge of the upper surface opening of the concave portion of the container, and the flange formed on the peripheral edge of the opening. The freeze-drying in a packaging container according to claim 1, wherein the upper surface opening of the freeze-drying container after containing the freeze-dried material is sealed with a moisture-permeable film. How to make things. 上面開口した包装容器で形成した凍結乾燥容器の上面開口した凹部を有する包装容器を、複数個設けた構造とし、各凹部を有する包装容器間に、切り離しできる構造を形成し、真空凍結乾燥終了後に、凍結乾燥物を収容した包装容器を分離可能としたことを特徴とする請求項1又は2に記載の包装容器入り凍結乾燥物の製造方法。 A structure is provided in which a plurality of packaging containers having recesses opened on the upper surface of the freeze-drying container formed of the packaging containers having an open top surface are provided, and a structure that can be separated is formed between the packaging containers having the recesses, and after the vacuum freeze-drying is completed. The method for producing a freeze-dried product in a packaging container according to claim 1 or 2, wherein the packaging container containing the freeze-dried product can be separated. 透湿性のフィルムの開孔率が2〜70%であることを特徴とする請求項1〜3のいずれかに記載の包装容器入り凍結乾燥物の製造方法。 The method for producing a freeze-dried product in a packaging container according to any one of claims 1 to 3, wherein the moisture-permeable film has an aperture ratio of 2 to 70%. 以下の(a)〜(d)の工程を有する、請求項1〜4のいずれかに記載の包装容器入り凍結乾燥物の製造方法。
(a)包装容器により形成され、上面開口した凹部を有し、かつ該凹部の開口周縁に鍔部を有する凍結乾燥容器を用意する工程、
(b)上記(a)の容器の凹部に被凍結乾燥物を収容する工程、
(c)上記(b)の工程の後、透湿性を有するフィルムを、凍結乾燥容器の上面開口した凹部の開口周縁の鍔部に接着して、該凹部を密閉する工程、
(d)上記(c)の工程の後、包装容器形成され、被凍結乾燥物を収容し、かつ、透湿性のフィルムで密封された凍結乾燥容器を真空凍結乾燥機に収容し、真空凍結乾燥処理を行う工程、
(e)上記(d)の工程の後、容器を真空凍結乾燥機から取り出す工程。
The method for producing a freeze-dried product in a packaging container according to any one of claims 1 to 4, which comprises the following steps (a) to (d).
(A) A step of preparing a freeze-drying container formed of a packaging container, having a recess having an opening on the upper surface, and having a collar on the peripheral edge of the opening of the recess.
(B) The step of accommodating the freeze-dried product in the recess of the container of (a) above.
(C) After the step of (b) above, a step of adhering a moisture-permeable film to the collar portion of the opening peripheral edge of the recess opened on the upper surface of the freeze-drying container to seal the recess.
(D) After the step (c) above, a lyophilization container formed into a packaging container, containing the freeze-dried material, and sealed with a moisture-permeable film is housed in a vacuum freeze-dryer and vacuum freeze-dried. The process of processing,
(E) A step of removing the container from the vacuum freeze dryer after the step (d) above.
請求項1〜5のいずれかに記載の包装容器入り凍結乾燥物の製造方法において、該製造方法により製造された包装容器入り凍結乾燥物を、更に、非透湿性フィルムにより、密封、包装する工程を付加することにより、包装容器入り凍結乾燥物が、非透湿性フィルムにより、密封、包装されたことを特徴とする包装体入り凍結乾燥物製品の製造方法。 In the method for producing a frozen-dried product in a packaging container according to any one of claims 1 to 5, a step of further sealing and packaging the frozen-dried product in a packaging container produced by the manufacturing method with a non-breathable film. A method for producing a frozen-dried product in a package, wherein the frozen-dried product in a packaging container is sealed and packaged with a non-moisture-permeable film. 請求項5に記載の(a)〜(e)の工程を有する、包装容器入り凍結乾燥物の製造工程に、更に、(f)上記(e)の工程により製造された包装容器入り凍結乾燥物を、更に、非透湿性フィルムにより、密封、包装する工程を付加することにより、包装容器入り凍結真空乾燥物が、非透湿性フィルムにより、密封、包装されたことを特徴とする包装体入り凍結乾燥物製品の製造方法。 In addition to the process for producing a freeze-dried product in a packaging container having the steps (a) to (e) according to claim 5, (f) the freeze-dried product in a packaging container produced by the step (e) above. Further, by adding a step of sealing and packaging with a non-breathable film, the freeze-dried product in a packaging container is sealed and packaged with a non-breathable film. How to make dried products. 包装容器入り凍結乾燥物の非透湿性フィルムによる密封、包装が、真空凍結乾燥後の包装容器入り凍結乾燥物を、非透湿性フィルムにより外装するか、或いは、凍結乾燥物を収容し、透湿性フィルムを接着して密封し、真空凍結乾燥した凍結乾燥物の包装容器の上面開口部を、更に、非透湿性フィルムを接着して、密封するかして、密封、包装することを特徴とする請求項6又は7に記載の包装体入り凍結乾燥物製品の製造方法。 The freeze-dried product in the packaging container is sealed and packaged with a non-breathable film, and the freeze-dried product in the packaging container after vacuum freeze-drying is covered with a non-breathable film, or the freeze-dried product is contained and moisture-permeable. It is characterized in that the upper surface opening of the packaging container of the freeze-dried product which has been vacuum freeze-dried by adhering and sealing the film is further adhered and sealed by attaching a non-breathable film, and then sealed and packaged. The method for producing a freeze-dried product in a package according to claim 6 or 7.
JP2020090243A 2019-05-23 2020-05-25 Manufacturing method of freeze-dried product in packaging container Pending JP2020193038A (en)

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