JP2017024748A - Heat sterilization method for food packaged in aerosol container - Google Patents

Heat sterilization method for food packaged in aerosol container Download PDF

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JP2017024748A
JP2017024748A JP2015144709A JP2015144709A JP2017024748A JP 2017024748 A JP2017024748 A JP 2017024748A JP 2015144709 A JP2015144709 A JP 2015144709A JP 2015144709 A JP2015144709 A JP 2015144709A JP 2017024748 A JP2017024748 A JP 2017024748A
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food
aerosol container
container
liquid content
discharge mechanism
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千本　克己
Katsumi Senbon
克己 千本
正義 兼田
Masayoshi Kaneda
正義 兼田
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Toyo Seikan Group Holdings Ltd
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Toyo Seikan Kaisha Ltd
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Abstract

PROBLEM TO BE SOLVED: To perform efficient and secured heat sterilization treatment for a food packaged in an aerosol container, without spoiling the quality of the food.SOLUTION: A heat sterilization method for a food 100 packaged in an aerosol container, obtained by filling and sealing a food as a liquid content 4 in an aerosol container 1 including a discharge mechanism 30 for discharging the liquid content 4 by the pressure of press fitting gas P includes: holding an orientation of the food 100 packaged in the aerosol container so as to bring the liquid content 4 into contact with a container inside part 30S of the discharge mechanism 30; and applying a heat medium of a temperature required for sterilization treatment to the entire outer surface of the aerosol container 1 in the orientation.SELECTED DRAWING: Figure 1

Description

本発明は、エアゾール容器入り食品の加熱殺菌方法に関するものである。   The present invention relates to a method for heat sterilization of food in an aerosol container.

金属材料からなるエアゾール缶などのエアゾール容器は、容器内に充填される液状の内容物を容器内のヘッドスペースに圧入されるガスの圧力を利用して霧状或いは泡状にして吐出させる容器であり、薬剤や塗料などの容器として広く普及している。このようなエアゾール容器は、その吐出機能を効果的に利用した食品容器としても用いられており、液状の香味料や調味料、その他の液状食品を、霧状や泡状にして吐出させるエアゾール容器入り食品が従来から知られている（下記特許文献１参照）。   An aerosol container such as an aerosol can made of a metal material is a container that discharges the liquid content filled in the container in the form of a mist or foam using the pressure of the gas that is press-fitted into the head space in the container. It is widely used as a container for drugs and paints. Such an aerosol container is also used as a food container that effectively uses its discharge function, and is an aerosol container that discharges liquid flavorings, seasonings, and other liquid foods in the form of mist or foam. Foods containing food are conventionally known (see Patent Document 1 below).

特開平１１−２５５２７８号公報JP-A-11-255278

容器内に食品を充填密封した製品は、容器に食品を充填して密封した後に加熱殺菌処理を行うことが一般になされている。長期保存性を高めるためには、容器の内側とその容器に充填される食品の両方を殺菌処理することが必要になるが、容器に食品を充填して密封した状態で加熱殺菌処理を行うと、充填前に容器と食品を個別に殺菌処理する場合と比べて効率的且つ確実な殺菌が可能になる。   A product in which food is filled and sealed in a container is generally subjected to heat sterilization after filling the container with the food and sealing. In order to improve long-term storage, it is necessary to sterilize both the inside of the container and the food filled in the container. However, if heat sterilization is performed with the container filled with food and sealed, As compared with the case where the container and the food are individually sterilized before filling, efficient and reliable sterilization is possible.

このような容器入り食品の加熱殺菌処理では、食品に対する過剰な加熱を避けることが不可欠であり、殺菌処理に必要な温度に昇温させて所定時間保持した後は、速やかに食品の温度を下げて、食品の品質維持を図ることが必要になる。   In such heat sterilization treatment of food in a container, it is essential to avoid excessive heating of the food, and after raising the temperature to the temperature necessary for sterilization treatment and holding it for a predetermined time, the temperature of the food is quickly lowered. Therefore, it is necessary to maintain the quality of food.

これに対して、エアゾール容器に食品を充填密封した製品（以下、エアゾール容器入り食品という）は、容器に食品を充填した状態で加熱殺菌処理を行おうとすると、エアゾール容器が、ハウジング，バネ，ガスケットなど、部品点数の多い吐出機構を備えており、この吐出機構が熱伝導性の低い圧入気体で覆われているので、容器外部からの加熱によって容器内の食品が殺菌に必要な温度に昇温された状態であっても、吐出機構を含むエアゾール容器の内部が殺菌に必要な温度まで昇温しないという状態が生じる。当然ながら、エアゾール容器入り食品の加熱殺菌処理では、エアゾール容器の内部と容器内の食品を共に殺菌に必要な温度まで昇温させることが必要になるので、エアゾール容器の内部が全て殺菌に必要な温度まで上昇した状態で所定時間の処理を行うと、容器内の食品が過剰に加熱されてしまい、食品の品質が損ねられてしまう問題が生じる。   On the other hand, if an aerosol container is filled with food and sealed (hereinafter referred to as food in an aerosol container), when the container is filled with food, the aerosol container will have a housing, spring, and gasket. This is equipped with a discharge mechanism with a large number of parts, and this discharge mechanism is covered with a pressurized gas with low thermal conductivity, so that the food in the container is heated to the temperature required for sterilization by heating from the outside of the container. Even in such a state, the inside of the aerosol container including the discharge mechanism does not rise to the temperature necessary for sterilization. Naturally, in the heat sterilization treatment of food in aerosol containers, it is necessary to raise the temperature of both the inside of the aerosol container and the food in the container to a temperature necessary for sterilization, so all the inside of the aerosol container is necessary for sterilization. When the treatment for a predetermined time is performed in a state where the temperature has risen, the food in the container is excessively heated, which causes a problem that the quality of the food is impaired.

これを避けるためには、エアゾール容器と食品を別に殺菌する充填前殺菌を行わざるを得ないが、充填前殺菌では、充填時の食品と容器の無菌化だけでなく、容器内に圧入する気体の無菌化が必要になり、エアゾール容器入り食品の充填前殺菌は、非常に煩雑な処理が伴い、効率的且つ確実な殺菌処理が困難になる問題が生じる。   In order to avoid this, sterilization before filling must be performed to sterilize the aerosol container and food separately. In sterilization before filling, not only sterilization of the food and container at the time of filling, but also gas injected into the container. The sterilization before filling of the food in an aerosol container is accompanied by a very complicated process, and there arises a problem that an efficient and reliable sterilization process becomes difficult.

本発明は、このような問題に対処することを課題の一例とするものである。すなわち、エアゾール容器入り食品において、食品の品質を損なうこと無く、効率的且つ確実な加熱殺菌処理を行うことが本発明の目的である。   This invention makes it an example of a subject to cope with such a problem. That is, it is an object of the present invention to perform an efficient and reliable heat sterilization process in a food in an aerosol container without impairing the quality of the food.

このような目的を達成するために、本発明によるエアゾール容器入り食品の加熱殺菌処理方法は、以下の構成を具備するものである。
圧入気体の圧力で液状内容物を吐出させる吐出機構を備えたエアゾール容器に、液状内容物として食品を充填密封したエアゾール容器入り食品の加熱殺菌方法であって、前記液状内容物が前記吐出機構の容器内部分に接液するように、前記エアゾール容器入り食品の姿勢を保持し、該姿勢にて前記エアゾール容器の外表面全体に殺菌処理に必要な温度の熱媒体を当てることを特徴とする。 In order to achieve such an object, the method for heat sterilization of food in an aerosol container according to the present invention has the following configuration.
A method for heat sterilization of food in an aerosol container in which food is filled and sealed as a liquid content in an aerosol container provided with a discharge mechanism that discharges the liquid content with the pressure of the injected gas, wherein the liquid content is The posture of the food in the aerosol container is maintained so as to come into contact with the inner portion of the container, and a heat medium having a temperature necessary for sterilization treatment is applied to the entire outer surface of the aerosol container in this posture.

このような特徴を有する本発明は、液状内容物を吐出機構の容器内部分に接液させることで、液状内容物を介して吐出機構の容器内部分を加熱することができる。これによって、充填密封後の加熱殺菌処理であっても、液状内容物と吐出機構を含んだエアゾール容器の内部が略均一に加熱されることになり、液状内容物である食品の品質を損ねることなく、エアゾール容器入り食品を効率的且つ確実に加熱殺菌処理することができる。   In the present invention having such characteristics, the liquid content is brought into contact with the inner portion of the container of the discharge mechanism, so that the inner portion of the discharge mechanism can be heated via the liquid content. As a result, even in the heat sterilization treatment after filling and sealing, the inside of the aerosol container including the liquid content and the discharge mechanism is heated substantially uniformly, and the quality of the food that is the liquid content is impaired. In addition, it is possible to heat and sterilize food in an aerosol container efficiently and reliably.

本発明の実施形態に係るエアゾール容器入り食品の加熱殺菌方法を示した説明図（（ａ）が横置きに保持した例、（ｂ）が吐出機構を下向きに保持した例）である。It is explanatory drawing which showed the heat sterilization method of the foodstuffs containing an aerosol container which concerns on embodiment of this invention ((a) held horizontally, example (b) held the discharge mechanism downward). エアゾール容器のバルブ部の基本構成を示した説明図である。It is explanatory drawing which showed the basic composition of the valve | bulb part of an aerosol container. 本発明の実施形態に係るエアゾール容器入り食品の加熱殺菌方法の他の例を示した説明図（（ａ）が殺菌前に液状内容物を吐出させる工程を示しており、（ｂ）が横置き姿勢で殺菌処理する工程を示している。）である。Explanatory drawing which showed the other example of the heat sterilization method of the foodstuffs containing the aerosol container which concerns on embodiment of this invention ((a) has shown the process of discharging a liquid content before sterilization, (b) is set horizontally) It shows a process of sterilizing in a posture.). 本発明のエアゾール容器入り食品の加熱殺菌方法を実施する装置の一例を示した説明図である。It is explanatory drawing which showed an example of the apparatus which enforces the heat sterilization method of the foodstuffs containing an aerosol container of this invention.

以下、図面を参照して本発明の実施形態を説明する。図１は、本発明の実施形態に係るエアゾール容器入り食品の加熱殺菌方法を示している。エアゾール容器１は、その上に目金蓋が巻き締められた容器部２とバルブ部３を備えており、容器部２内に食品である液状内容物４を入れて、バルブ部３を容器部２の上端にカシメ・巻き締めなどで接合し、バルブ部３の吐出機構３０を介して、エアゾール容器１内のヘッドスペース内に圧入気体Ｐを充填することでエアゾール容器入り食品１００が得られる。すなわち、エアゾール容器入り食品１００とは、エアゾール容器１に食品である液状内容物４と圧入気体Ｐを充填して密封した製品である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a heat sterilization method for food in an aerosol container according to an embodiment of the present invention. The aerosol container 1 includes a container part 2 and a valve part 3 around which a lid for eyelids is wound, and a liquid content 4 that is a food is placed in the container part 2 so that the valve part 3 is placed in the container part. The food container 100 in an aerosol container is obtained by joining the upper end of 2 by caulking, winding, or the like, and filling the head space in the aerosol container 1 with the pressurized gas P via the discharge mechanism 30 of the valve unit 3. In other words, the food in the aerosol container 100 is a product in which the aerosol container 1 is filled with the liquid content 4 as the food and the pressurized gas P and sealed.

図２は、エアゾール容器１のバルブ部３の基本構成を示している。バルブ部３は、マウンティングカップ３１とそれに取り付けられる吐出機構３０を備えている。吐出機構３０は、ハウジング３２、ステムガスケット３３、ステム３４、スプリング３５、アクチュエータ３６を備えている。ハウジング３２は、その一端側が、容器部２の底付近まで一端が延びるディップチューブ３７の他端に接続されている。また、ハウジング３２の他端側にはステムガスケット３３が取り付けられている。ステム３４は、その一部がハウジング３２内に収められ、他部がステムガスケット３３を介してハウジング３２の外側に突出している。スプリング３５は、ガスケット３３内のステム３４をステムガスケット３３側に付勢している。アクチュエータ３６は、ステム３４におけるハウジング３２からの吐出部分に取り付けられており、ステム３４に連通するノズル３６Ａを備えている。   FIG. 2 shows a basic configuration of the valve unit 3 of the aerosol container 1. The valve unit 3 includes a mounting cup 31 and a discharge mechanism 30 attached thereto. The discharge mechanism 30 includes a housing 32, a stem gasket 33, a stem 34, a spring 35, and an actuator 36. One end side of the housing 32 is connected to the other end of the dip tube 37 whose one end extends to the vicinity of the bottom of the container part 2. A stem gasket 33 is attached to the other end side of the housing 32. A part of the stem 34 is accommodated in the housing 32, and the other part protrudes outside the housing 32 via the stem gasket 33. The spring 35 biases the stem 34 in the gasket 33 toward the stem gasket 33 side. The actuator 36 is attached to a discharge portion from the housing 32 in the stem 34 and includes a nozzle 36 </ b> A communicating with the stem 34.

このような吐出機構３０においては、ステムガスケット３３より容器部２側の部分が、吐出機構３０の容器内部分３０Ｓになる。すなわち、図示の例では、吐出機構３０の容器内部分３０Ｓは、ハウジング３２の全体、ハウジング３２内のステム３４の一部、ハウジング３２内のスプリング３５を指している。   In such a discharge mechanism 30, a portion on the container portion 2 side from the stem gasket 33 becomes an in-container portion 30 </ b> S of the discharge mechanism 30. That is, in the illustrated example, the container inner portion 30 </ b> S of the discharge mechanism 30 indicates the entire housing 32, a part of the stem 34 in the housing 32, and the spring 35 in the housing 32.

このようなエアゾール容器入り食品１００は、エアゾール容器１の外表面全体に熱媒体Ｍを当ててエアゾール容器１の内部と食品である液状内容物４の両方を加熱殺菌処理する際に、吐出機構３０の容器内部分３０Ｓが常時圧入気体Ｐに接触していると、その容器内部分３０Ｓを殺菌処理に必要な温度まで上昇させるのに時間を要し、液状内容物４の温度が既に殺菌処理に必要な温度まで上昇しているにも拘わらず、吐出機構３０の容器内部分３０Ｓの温度が殺菌処理に必要な温度まで上昇していない状態になる。   The food container 100 with such an aerosol container is provided with a discharge mechanism 30 when the heat medium M is applied to the entire outer surface of the aerosol container 1 to heat and sterilize both the inside of the aerosol container 1 and the liquid content 4 that is food. If the in-container portion 30S is constantly in contact with the pressurized gas P, it takes time to raise the in-container portion 30S to the temperature required for the sterilization treatment, and the temperature of the liquid content 4 is already in the sterilization treatment. Although the temperature has risen to the necessary temperature, the temperature of the in-container portion 30S of the discharge mechanism 30 has not risen to the temperature necessary for the sterilization process.

このような状態を解消するために、本発明の実施形態は、図１に示すように、液状内容物４が吐出機構３０の容器内部分３０Ｓに接液するように、エアゾール容器入り食品１００の姿勢を保持し、この姿勢にてエアゾール容器１の外表面全体に殺菌処理に必要な温度の熱媒体Ｍを当てている。図１の例では、熱媒体Ｍを溜めた加熱殺菌槽５内に保持部６を設けることで、エアゾール容器入り食品１００の姿勢を保持している。この際、特に図示はしないが、加熱殺菌槽５内のエアゾール容器１の浮き上がりを防止しつつ、エアゾール容器入り食品１００の姿勢を保持する目的で、押さえ蓋状の保持部材などを用いてもよい。   In order to eliminate such a state, as shown in FIG. 1, the embodiment of the present invention is configured so that the liquid content 4 comes into contact with the in-container portion 30 </ b> S of the discharge mechanism 30. The posture is maintained, and the heat medium M having a temperature necessary for the sterilization treatment is applied to the entire outer surface of the aerosol container 1 in this posture. In the example of FIG. 1, the posture of the food 100 in an aerosol container is held by providing the holding unit 6 in the heat sterilization tank 5 in which the heat medium M is stored. At this time, although not particularly illustrated, a holding member in the form of a pressing lid may be used for the purpose of maintaining the posture of the food 100 in the aerosol container while preventing the aerosol container 1 in the heat sterilization tank 5 from being lifted. .

図１（ａ）は、液状内容物４が吐出機構３０の容器内部分３０Ｓに接液する姿勢として、エアゾール容器入り食品１００を横置き姿勢にしている。この例では、液状内容物４の充填量をエアゾール容器１における内容積の半分以上にすることで、吐出機構３０の容器内部分３０Ｓを液状内容物４で接液させることができる。この際には、容器内部分３０Ｓの全体が接液する必要があるが、容器内部分３０Ｓの一部が気相に露出している場合には、加熱殺菌処理中にエアゾール容器入り食品１００を容器軸周りに回転させるなどして全体を接液させる必要がある。   In FIG. 1A, the aerosol-contained food 100 is placed in a horizontal posture as a posture in which the liquid content 4 comes into contact with the in-container portion 30 </ b> S of the discharge mechanism 30. In this example, the container content 30 </ b> S of the discharge mechanism 30 can be brought into contact with the liquid content 4 by making the filling amount of the liquid content 4 more than half of the internal volume in the aerosol container 1. At this time, the entire container inner part 30S needs to come into contact with the liquid. However, when a part of the container inner part 30S is exposed to the gas phase, the food 100 in the aerosol container is removed during the heat sterilization process. It is necessary to wet the whole by rotating around the container axis.

図１（ｂ）は、液状内容物４が吐出機構３０の容器内部分３０Ｓに接液する姿勢として、エアゾール容器入り食品１００の吐出機構３０を下向きにした姿勢にしている。この例では、液状内容物４の充填量がエアゾール容器１の内容積に対して半分より少ない場合であっても、吐出機構３０の容器内部分３０Ｓを液状内容物４で接液させることができる。   In FIG. 1B, the posture in which the liquid contents 4 are in contact with the in-container portion 30 </ b> S of the discharge mechanism 30 is the posture in which the discharge mechanism 30 of the food 100 in the aerosol container is directed downward. In this example, even if the filling amount of the liquid content 4 is less than half of the inner volume of the aerosol container 1, the in-container portion 30 </ b> S of the discharge mechanism 30 can be in contact with the liquid content 4. .

以下に、本発明の実施形態における効果を確認する試験例を示す。図１（ａ）に示すようにエアゾール容器入り食品１００を横置き姿勢にして、液状内容物４の接液部となるエアゾール容器１の底部（図示Ｔ１）と、エアゾール容器１内のヘッドスペース（図示Ｔ２）と、吐出機構３０の容器内部分３０Ｓ（図示Ｔ３）の３箇所に熱電対温度センサを設置し、エアゾール容器１内の密封状態を維持したまま、図１に示すようなウォータバス式の加熱殺菌装置を用いて、前記３箇所の温度が２０℃（常温）から７５℃（連続低温殺菌温度）まで上昇するのに要する時間（到達時間）を計測した。   Below, the test example which confirms the effect in embodiment of this invention is shown. As shown in FIG. 1 (a), the food container 100 in an aerosol container is placed in a horizontal position, and the bottom part (illustrated T1) of the aerosol container 1 serving as a liquid contact part of the liquid content 4 and the head space ( A water bath type as shown in FIG. 1 is provided with thermocouple temperature sensors installed at three locations, T2 in the drawing and in-container portion 30S (T3 in the drawing) of the discharge mechanism 30, and the sealed state in the aerosol container 1 is maintained. Was used to measure the time (arrival time) required for the temperature at the three locations to rise from 20 ° C. (room temperature) to 75 ° C. (continuous pasteurization temperature).

試験条件としては、圧入気体を０．１０ＭＰａのＮ2ガスとし、液状内容物（水）４の充填量が満注充填量に対して４５％，５５％，６０％の３例において、前記の計測を行った。その計測結果を下記の表に示す。 As test conditions, the injecting gas was N 2 gas of 0.10 MPa, and the filling amount of the liquid content (water) 4 was 45%, 55%, and 60% with respect to the full filling amount. Measurement was performed. The measurement results are shown in the following table.

Figure 2017024748
Figure 2017024748

この実験結果から明らかなように、例１は、充填量が満注充填量に対して４５％の場合であって、図１（ａ）に示すように横置き姿勢にしても、吐出機構３０の容器内部分３０Ｓの全体が液状内容物４で接液される状態にはならない。この場合には、温度計測箇所Ｔ１とＴ３で到達時間の差が大きくなり（２８分８秒）、温度計測箇所Ｔ３を十分に加熱殺菌処理しようとすると、その間に液状内容物４が過加熱状態になり、液状内容物４の品質が損なわれることになる。   As is apparent from the experimental results, Example 1 is a case where the filling amount is 45% with respect to the full filling amount, and the discharge mechanism 30 is also in the horizontal orientation as shown in FIG. The entire container inner portion 30S is not in contact with the liquid content 4. In this case, the difference in arrival time between the temperature measurement points T1 and T3 becomes large (28 minutes and 8 seconds), and if the temperature measurement point T3 is sufficiently heated and sterilized, the liquid content 4 is overheated in the meantime. As a result, the quality of the liquid content 4 is impaired.

これに対して、例２及び例３は、充填量が満注充填量の半分以上になっている場合であり、図１（ａ）に示すように横置き姿勢にすることで、吐出機構３０の容器内部分３０Ｓの全体が液状内容物４で接液される状態になる。この場合には、温度計測箇所Ｔ１とＴ３で到達時間の差が比較的小さくなり（例２では６分２８秒、例３では１分６秒）、温度計測箇所Ｔ３を十分に加熱殺菌処理した場合にも、その間に液状内容物４が過加熱状態にはならず、液状内容物４の品質が損なわれることはない。   On the other hand, Example 2 and Example 3 are cases where the filling amount is more than half of the full filling amount, and the discharge mechanism 30 is set to the horizontal orientation as shown in FIG. The entire container inner portion 30 </ b> S comes into contact with the liquid content 4. In this case, the difference in arrival time between the temperature measurement points T1 and T3 is relatively small (6 minutes 28 seconds in Example 2, 1 minute 6 seconds in Example 3), and the temperature measurement point T3 is sufficiently heat-sterilized. Even in this case, the liquid content 4 is not overheated in the meantime, and the quality of the liquid content 4 is not impaired.

図３は、エアゾール容器入り食品の加熱殺菌方法の他の例を示している。この例では、先ず、図３（ａ）に示すように、殺菌処理を行う前に、吐出機構３０を介して液状内容物４をエアゾール容器１の外に少量吐出させる工程を実行する。そして、その後に図３（ｂ）に示すように、エアゾール容器入り食品１００を横置き姿勢にして、熱媒体Ｍをエアゾール容器１の全体に当てる殺菌処理を行う。このように、殺菌処理を行う前に吐出機構３０を介して液状内容物４を少量吐出させることで、吐出機構３０の容器内部分３０Ｓやディップチューブ３４内に液状内容物４が充填された状態になる。これによって、加熱殺菌処理時に温度計測箇所Ｔ１とＴ３で到達時間の差が更に小さくなり、液状内容物４の品質を損ねること無く、エアゾール容器入り食品１００全体を適正に加熱殺菌処理することができる。   FIG. 3 shows another example of a method for heat sterilization of food in aerosol containers. In this example, first, as shown in FIG. 3A, a step of discharging a small amount of the liquid content 4 out of the aerosol container 1 through the discharge mechanism 30 is performed before the sterilization process. Then, as shown in FIG. 3 (b), the food container 100 in an aerosol container is placed in a horizontal position, and a sterilization process is performed in which the heat medium M is applied to the entire aerosol container 1. As described above, the liquid content 4 is discharged into the container 30S and the dip tube 34 of the discharge mechanism 30 by discharging a small amount of the liquid content 4 through the discharge mechanism 30 before the sterilization process. become. Thereby, the difference in arrival time is further reduced at the temperature measurement locations T1 and T3 during the heat sterilization process, and the entire food 100 in the aerosol container can be appropriately heat sterilized without deteriorating the quality of the liquid contents 4. .

図４は、本発明のエアゾール容器入り食品の加熱殺菌方法を実施するための装置例を示している。本発明の実施形態に係る加熱殺菌方法は、従来から知られた加熱殺菌処理装置を用いることができる。図示の例は、ウォータバス式の連続低温殺菌装置を示している。この例は、エアゾール容器入り食品１００を横置きにした状態で搬送する搬送コンベヤ１０１と、加熱殺菌槽１０２と、冷却槽１０３を備えている。供給コンベヤ１０４にて順次供給される未処理のエアゾール容器入り食品１００は、搬送コンベヤ１０１で搬送されて、加熱殺菌槽１０２を通過する所定時間内で７５℃程度の熱媒体Ｍに浸漬されて加熱殺菌され、その後、冷却槽１０３の冷却媒体Ｃに浸漬されることで、速やかに冷却処理がなされる。ここでは、ウォータバス式の連続低温殺菌装置を例示したが、これに限らず、シャワー式など既知の加熱殺菌装置を用いることができる。   FIG. 4 shows an example of an apparatus for carrying out the method for heat sterilization of food in an aerosol container according to the present invention. For the heat sterilization method according to the embodiment of the present invention, a conventionally known heat sterilization apparatus can be used. The illustrated example shows a water bath type continuous pasteurization apparatus. This example includes a conveyor 101 for transporting food 100 in an aerosol container in a horizontal state, a heat sterilization tank 102, and a cooling tank 103. The untreated aerosol-contained food 100 sequentially supplied by the supply conveyor 104 is transported by the transport conveyor 101 and immersed in the heat medium M at about 75 ° C. within a predetermined time passing through the heat sterilization tank 102 and heated. By being sterilized and then immersed in the cooling medium C of the cooling tank 103, the cooling process is promptly performed. Here, the water bath type continuous pasteurization apparatus is illustrated, but not limited to this, a known heat sterilization apparatus such as a shower type can be used.

このように、本発明の実施形態に係るエアゾール容器入り食品１００の加熱殺菌方法は、従来知られた装置を利用することで実施可能ではあるが、エアゾール容器入り食品１００を充填密封後に加熱殺菌処理する際の新規な課題を解決するものである。すなわち、エアゾール容器入り食品１００は、エアゾール容器１内に圧入気体Ｐを充填するので、エアゾール容器１を正立した状態では、吐出機構３０の容器内部分３０Ｓが気相に接することになり、液状内容物４と吐出機構３０の容器内部分３０Ｓとの間で加熱処理による温度上昇履歴に大きな差が生じてしまう。この差によって、吐出機構３０の容器内部分３０Ｓを十分に加熱殺菌処理しようとすると、液状内容物４が過加熱状態になり、液状内容物４が食品の場合には、その過加熱状態によって食品の品質低下を招くことになる。   As described above, the heat sterilization method for the aerosol-contained food 100 according to the embodiment of the present invention can be performed by using a conventionally known apparatus. It solves a new problem when doing. That is, the food 100 in the aerosol container fills the aerosol container 1 with the pressurized gas P, and therefore, when the aerosol container 1 is in an upright state, the in-container portion 30S of the discharge mechanism 30 is in contact with the gas phase, and is liquid. A large difference occurs in the temperature rise history due to the heat treatment between the contents 4 and the in-container portion 30S of the discharge mechanism 30. Due to this difference, when the inner portion 30S of the discharge mechanism 30 is sufficiently heated and sterilized, the liquid content 4 is overheated, and when the liquid content 4 is food, the food is caused by the overheated state. The quality of the product will be reduced.

この際、液状内容物４が食品であることから、圧入される気体は、窒素（Ｎ2）ガス、炭酸ガス、亜酸化窒素ガスなどに限定されることなり、特に、液状内容物４である食品の味などに影響が無く安価に入手可能な気体となると、Ｎ2ガスが一般に採用されることになる。Ｎ2ガスは液体に溶け難いので、圧入ガスの圧力を利用した吐出効果を十分に得るためには、エアゾール容器１内のヘッドスペースを比較的大きく取らざるをなくなり、前述した課題が顕在化することになる。 At this time, since the liquid content 4 is a food, the injected gas is limited to nitrogen (N 2 ) gas, carbon dioxide gas, nitrous oxide gas, and the like, and in particular, the liquid content 4. If it becomes a gas that is not affected by the taste of food and can be obtained at low cost, N 2 gas is generally adopted. Since N 2 gas is difficult to dissolve in a liquid, in order to obtain a sufficient discharge effect using the pressure of the injected gas, the head space in the aerosol container 1 must be made relatively large, and the above-described problems become apparent. It will be.

本発明の実施形態に係るエアゾール容器入り食品１００の加熱殺菌処理方法は、エアゾール容器１における吐出機構３０の容器内部分３０Ｓを液状内容物４で接液することで、エアゾール容器入り食品１００の全体を外部から均一に加熱することができるという新たな知見によって、前述したエアゾール容器入り食品特有の課題を解決するものである。これによって、本発明の実施形態に係るエアゾール容器入り食品１００の加熱殺菌処理方法は、充填前殺菌時に生じる圧入気体の無菌化などの煩雑な工程を省くことでき、液状内容物である食品の品質を損ねることなく、エアゾール容器入り食品を効率的且つ確実に加熱殺菌処理することができる有利な効果を得ることができる。   In the method for heat sterilization of the aerosol-contained food 100 according to the embodiment of the present invention, the in-container portion 30 </ b> S of the discharge mechanism 30 in the aerosol container 1 is in contact with the liquid content 4, thereby The new knowledge that can be heated uniformly from the outside solves the above-mentioned problems inherent to foods in aerosol containers. Thereby, the heat sterilization processing method of the foodstuff 100 with the aerosol container according to the embodiment of the present invention can omit a complicated process such as sterilization of the pressurization gas generated at the time of sterilization before filling, and the quality of the food which is a liquid content An advantageous effect of efficiently and surely heat-sterilizing the food in an aerosol container can be obtained without detracting from the condition.

１：エアゾール容器，２：容器部，３：バルブ部，４：液状内容物，
５：加熱殺菌槽，
３０：吐出機構，３０Ｓ：容器内部分，
３１：マウンティングカップ，３２：ハウジング，
３３：ステムガスケット，３４：ステム，３５：スプリング，
３６：アクチュエータ，３６Ａ：ノズル，３７：ディップチューブ
Ｐ：圧入気体，Ｍ：熱媒体，Ｃ：冷却媒体，
１００：エアゾール容器入り食品，１０１：搬送コンベヤ，
１０２：加熱殺菌槽，１０３：冷却槽，１０４：供給コンベヤ 1: aerosol container, 2: container part, 3: valve part, 4: liquid content,
5: Heat sterilization tank,
30: Discharge mechanism, 30S: Container inner part,
31: Mounting cup, 32: Housing
33: Stem gasket, 34: Stem, 35: Spring,
36: Actuator, 36A: Nozzle, 37: Dip tube P: Press-in gas, M: Heat medium, C: Cooling medium,
100: Food in aerosol container, 101: Conveyor,
102: Heat sterilization tank, 103: Cooling tank, 104: Supply conveyor

Claims (5)

圧入気体の圧力で液状内容物を吐出させる吐出機構を備えたエアゾール容器に、液状内容物として食品を充填密封したエアゾール容器入り食品の加熱殺菌方法であって、
前記液状内容物が前記吐出機構の容器内部分に接液するように、前記エアゾール容器入り食品の姿勢を保持し、該姿勢にて前記エアゾール容器の外表面全体に殺菌処理に必要な温度の熱媒体を当てることを特徴とするエアゾール容器入り食品の加熱殺菌方法。 A method for heat sterilization of food in an aerosol container filled with food as a liquid content in an aerosol container equipped with a discharge mechanism that discharges the liquid content with the pressure of the pressurized gas,
Maintain the posture of the food in the aerosol container so that the liquid content comes into contact with the inner part of the discharge mechanism, and heat the heat of the temperature necessary for sterilization to the entire outer surface of the aerosol container in the posture. A method for heat sterilization of food in an aerosol container, characterized by applying a medium. 前記姿勢は、横置き姿勢であることを特徴とする請求項１記載のエアゾール容器入り食品の加熱殺菌方法。   The method for heat sterilization of food in an aerosol container according to claim 1, wherein the posture is a horizontal posture. 前記姿勢は、前記吐出機構を下向きにした姿勢であることを特徴とする請求項１記載のエアゾール容器入り食品の加熱殺菌方法。   The said attitude | position is an attitude | position which turned the said discharge mechanism downward, The heat sterilization method of the foodstuffs containing an aerosol container of Claim 1 characterized by the above-mentioned. 前記液状内容物の充填量が、前記エアゾール容器における内容積の半分以上であることを特徴とする請求項１〜３のいずれか1項に記載されたエアゾール容器入り食品の加熱殺菌方法。   The method for heat sterilizing food in an aerosol container according to any one of claims 1 to 3, wherein a filling amount of the liquid content is half or more of an internal volume in the aerosol container. 前記姿勢が横置き姿勢であり、前記エアゾール容器入り食品を横置きに保持する前に、前記吐出機構を介して前記液状内容物を前記エアゾール容器外に吐出させることを特徴とする請求項１記載のエアゾール容器入り食品の加熱殺菌方法。   2. The liquid content is discharged out of the aerosol container through the discharge mechanism before the food in the aerosol container is held in the horizontal position. Of heat sterilizing food in aerosol containers.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH062041B2 (en) * 1985-02-20 1994-01-12 東洋製罐株式会社 Method for producing food containing canned aerosol
JP2003079353A (en) * 2001-09-10 2003-03-18 Toyo Seikan Kaisha Ltd Container-pushing-in device in retort apparatus
JP2010189034A (en) * 2009-02-18 2010-09-02 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd Method of sterilizing chamber of aseptic filling machine
US20120060445A1 (en) * 2010-09-10 2012-03-15 Pepsico, Inc. Prevention of agglomeration of particles during sterilization processes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH062041B2 (en) * 1985-02-20 1994-01-12 東洋製罐株式会社 Method for producing food containing canned aerosol
JP2003079353A (en) * 2001-09-10 2003-03-18 Toyo Seikan Kaisha Ltd Container-pushing-in device in retort apparatus
JP2010189034A (en) * 2009-02-18 2010-09-02 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd Method of sterilizing chamber of aseptic filling machine
US20120060445A1 (en) * 2010-09-10 2012-03-15 Pepsico, Inc. Prevention of agglomeration of particles during sterilization processes

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