JPH07289218A - Sterilization and apparatus therefor - Google Patents
Sterilization and apparatus thereforInfo
- Publication number
- JPH07289218A JPH07289218A JP6083060A JP8306094A JPH07289218A JP H07289218 A JPH07289218 A JP H07289218A JP 6083060 A JP6083060 A JP 6083060A JP 8306094 A JP8306094 A JP 8306094A JP H07289218 A JPH07289218 A JP H07289218A
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- Prior art keywords
- pressure
- gas
- bag
- treated
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は食品や医薬品の殺菌に利
用される殺菌方法および装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing method and apparatus used for sterilizing foods and pharmaceuticals.
【０００２】[0002]
【従来の技術】従来、食品や医薬品の殺菌には、加熱、
薬品添加、放射線や紫外線の照射、超高圧、水中放電パ
ルス発生による衝撃波等を利用して行われてきた。しか
しながら、加熱による殺菌では熱による食品の変質、風
味劣化、ビタミン，アミノ酸等の栄養素の分解といった
製品価値の低下を引き起していた。また、薬品添加では
殺菌剤の使用条件が厳しく人体への有害性の観点から多
くの制約がある。さらに、放射線や紫外線照射など特殊
な装置を使用せねばならぬものは、その装置が高価にな
る。2. Description of the Related Art Conventionally, heating, sterilization of foods and pharmaceuticals
It has been carried out by using chemical waves, irradiation of radiation or ultraviolet rays, ultra-high pressure, and shock waves generated by discharge pulse in water. However, sterilization by heating causes deterioration in product value such as deterioration of food due to heat, deterioration of flavor, and decomposition of nutrients such as vitamins and amino acids. In addition, the use conditions of the bactericide are strict in addition of chemicals, and there are many restrictions from the viewpoint of harmfulness to the human body. In addition, the equipment that requires the use of special equipment such as radiation or ultraviolet irradiation is expensive.
【０００３】一方、近年では食品などの被処理物を高圧
ＣＯ２ガス中に置き、一定時間後、大気圧に解放するこ
とにより細菌等の微生物を死滅させたり、酵素の働きを
減少させたりする研究が進められている。On the other hand, in recent years, a substance to be treated such as food is placed in high-pressure CO 2 gas, and after a certain period of time, it is released to atmospheric pressure to kill microorganisms such as bacteria or reduce the action of enzymes. Research is ongoing.
【０００４】すなわち、図４は、従来の高圧ＣＯ２ガス
を利用した殺菌方法の概略を示すものであって、この殺
菌方法においては、耐圧容器５１内に被処理物５２を入
れ、ＣＯ２ガス供給装置５３より加圧ポンプ５４を介し
て耐圧容器５１内にＣＯ２ガス５５を供給し、被処理物
５２を４０ｋｇ／ｃｍ２以上に加圧し、一定時間後に、
圧力開放バルブ５６を開くことにより、微生物の細胞内
に溶解したＣＯ２ガスが減圧されて急膨脹し、そのエネ
ルギーで微生物の細胞壁を破砕し、殺菌するものであっ
た。これは、従来より行われている加熱による殺菌と異
なり、素材の持つ味・香り（風味）や栄養素を損うこと
がないので新しい殺菌法として極めて有望視されてい
る。That is, FIG. 4 shows an outline of a conventional sterilization method using high-pressure CO 2 gas. In this sterilization method, an object 52 to be treated is placed in a pressure vessel 51 and CO 2 gas is added. CO 2 gas 55 is supplied from the supply device 53 into the pressure resistant container 51 through the pressurizing pump 54 to pressurize the object 52 to be treated to 40 kg / cm 2 or more, and after a predetermined time,
By opening the pressure release valve 56, the CO 2 gas dissolved in the cells of the microorganism is decompressed and rapidly expanded, and the energy thereof crushes the cell wall of the microorganism to sterilize it. This is very promising as a new sterilization method because it does not impair the taste, aroma (flavor) and nutrients of the material unlike conventional sterilization by heating.
【０００５】[0005]
【発明が解決しようとする課題】ところで、上記したよ
うな高圧ＣＯ２ガスを急減圧する殺菌方法では、高圧ガ
スを使用するため、その取扱いには相当の注意を要す
る。By the way, in the sterilization method for rapidly depressurizing the high-pressure CO 2 gas as described above, since high-pressure gas is used, it must be handled with great care.
【０００６】例えば、１００ｋｇ／ｃｍ２の圧力下での
体積のものは大気圧下では１００倍に膨脹するものであ
るから、その取扱いは危険を伴い、また、装置本体のみ
ならず周囲の設備，建屋まで特別の仕様にしなければな
らず、さらに、設備の定期点検にも充分な監視を必要と
する。また、装置を運転するには、高圧ガス取締法に基
づく高圧ガス製造保安責任者の資格が必要であって、作
業者が限定されてしまうと言う問題点がある。また、こ
の方法では昇圧後の急速減圧をするのに、ガスの大量放
出を伴うので、圧力開放バルブを全開しても、大気圧に
下るまでに時間がかかり、殺菌効果が少なくなり、さら
に、高圧ガスが圧力開放バルブを通過するときの騒音に
も問題があった。これらは、高圧ＣＯ２ガスを利用した
殺菌法の実用化に大きな障害となるもので、これら障害
の排除が課題となっていた。[0006] For example, since a volume having a volume of 100 kg / cm 2 expands 100 times under atmospheric pressure, its handling is dangerous, and not only the apparatus main body but also surrounding facilities, The building must have special specifications, and sufficient monitoring is required for periodic inspection of equipment. Further, in order to operate the apparatus, there is a problem that a high-pressure gas production security officer qualification based on the High-pressure Gas Control Law is required, which limits the number of workers. Further, in this method, in order to perform rapid depressurization after pressurization, a large amount of gas is discharged, so even if the pressure release valve is fully opened, it takes time to fall to atmospheric pressure, and the sterilizing effect decreases, and further, There was also a problem with noise when high-pressure gas passed through the pressure relief valve. These are major obstacles to the practical application of the sterilization method using high-pressure CO 2 gas, and elimination of these obstacles has been a problem.
【０００７】[0007]
【発明の目的】本発明は、従来の高圧ガスを利用した減
圧殺菌法における上記課題に鑑みてなされたものであっ
て、設備費が安価であると共に安全性が高く、高圧ガス
取締法の規制を受けることなく誰でも作業に従事するこ
とができ、しかも極めて殺菌効果の高い殺菌方法および
装置を提供することを目的としている。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above problems in the conventional pressure sterilization method using high-pressure gas, and is low in equipment cost and high in safety, and regulated by the high-pressure gas control method. It is an object of the present invention to provide a sterilizing method and device which can be used by anyone without receiving the sterilization and which has an extremely high sterilizing effect.
【０００８】[0008]
【課題を解決するための手段】本発明に係わる殺菌方法
は被処理物をガスと共に封入した気密性袋体を耐圧容器
内に充填した加圧媒体用液体中に浸漬したのち、耐圧容
器を密閉し、密閉状態の耐圧容器内に加圧媒体用液体を
加圧注入することにより前記袋体内を所定圧力に保持す
ると共に、所定時間経過後に耐圧容器の加圧状態を急速
に解除することを構成としており、また、本発明の殺菌
装置は被処理物をガスと共に封入した気密性袋体を加圧
媒体用液体と共に収容する耐圧容器と、前記耐圧容器内
に加圧媒体用流体を加圧注入する加圧手段と、前記耐圧
容器の加圧状態を解除する圧力開放手段を備えたことを
構成としており、殺菌方法および装置における上記構成
を従来の課題を解決するための手段としたことを特徴と
している。According to the sterilization method of the present invention, a pressure-tight container is hermetically sealed after immersing an airtight bag in which an object to be treated is enclosed together with gas in a liquid for a pressurized medium filled in the pressure-resistant container. Then, by injecting a liquid for a pressurizing medium into the sealed pressure-resistant container under pressure, the inside of the bag is maintained at a predetermined pressure, and after a predetermined time elapses, the pressure-resistant state of the pressure-resistant container is rapidly released. Further, the sterilizing apparatus of the present invention is a pressure-resistant container for accommodating an object to be treated together with gas in an airtight bag together with a liquid for pressurized medium, and a fluid for pressurized medium is injected under pressure into the pressure-resistant container. And a pressure release means for releasing the pressurized state of the pressure resistant container, and the above-mentioned configuration in the sterilization method and device is a means for solving the conventional problems. I am trying.
【０００９】本発明に係わる殺菌方法は、とくに、肉，
魚，野菜等の食品類や、医薬品そして液体飲料物や粉体
食品の殺菌に適している。The sterilization method according to the present invention is particularly suitable for meat,
It is suitable for sterilizing foods such as fish and vegetables, pharmaceuticals, liquid drinks and powdered foods.
【００１０】本発明において、被処理物をガスと共に封
入する袋体としては、周囲から等方圧がかかるので可撓
性のもので、かつ、ガス不透過性と液体不透過性を備え
たものであればよく、プラスチック製、例えばポリエチ
レンフィルムからなる袋がよい。In the present invention, the bag for enclosing the object to be treated together with gas is flexible because it is subjected to isotropic pressure from the surroundings, and is also gas impermeable and liquid impermeable. Any bag may be used as long as it is made of plastic, for example, a bag made of polyethylene film.
【００１１】被処理物と共に封入するガスとしてはＣＯ
２ガス、Ｎ２ガス、Ｈｅガス等を使用できるが、ＣＯ２
ガスは被処理物に付着した微生物の細胞内の水分に多量
に溶解し易く、減圧時に多量のＣＯ２ガスが急膨脹する
ことによって高い殺菌効果が得られるので、より好まし
い。CO is used as a gas to be enclosed with the object to be treated.
2 gas, N 2 gas, He gas, etc. can be used, but CO 2
The gas is more preferable because it can be easily dissolved in a large amount in the intracellular water of the microorganisms attached to the object to be treated and a large amount of CO 2 gas is rapidly expanded at the time of depressurization to obtain a high sterilizing effect.
【００１２】加圧媒体用の液体は水，油が適している
が、特に水は安価であり、食品等に対して清潔で好まし
い。Water and oil are suitable as the liquid for the pressurizing medium, but water is particularly preferable because it is inexpensive and clean for foods and the like.
【００１３】加圧方法は直線的に加圧してもよいが袋体
内は断熱圧縮により温度が上昇していくので、食品等の
被処理物が変質しないように段階的に加圧して周囲の液
体に熱を逃すようにすることが好ましい。The pressurizing method may be linear pressurization, but since the temperature inside the bag rises due to adiabatic compression, stepwise pressurization is performed so that the object to be treated such as food is not deteriorated. It is preferable to let the heat escape.
【００１４】加圧時の最高圧力は保持時間、被処理体の
温度、減圧速度とも関連するが、６０ｋｇ／ｃｍ２以上
であると殺菌効果が大であり、また、５００ｋｇ／ｃｍ
２以下であると高圧ガス殺菌装置の構造が簡単な構造で
すむので好ましい。The maximum pressure at the time of pressurization is related to the holding time, the temperature of the object to be treated and the depressurization rate, but if it is 60 kg / cm 2 or more, the bactericidal effect is large, and 500 kg / cm.
It is preferable for it to be 2 or less because the structure of the high-pressure gas sterilizer can be simple.
【００１５】[0015]
【発明の作用】本発明に係わる殺菌方法は被処理物を高
圧ガスの下に置き、微生物の細胞内の水分に多量に高圧
ガスを溶解させ、しかる後に急速に減圧することによっ
て、微生物の細胞内のガスが急膨脹し、そのエネルギー
で細胞を囲む細胞壁を破砕し、殺菌する。また、同時に
微生物内で物質代謝に関与する酵素の働きを失わせて、
未だ細胞壁が破砕されていない微生物を死に至らせしむ
るものである。このとき、ガスを加圧するに際しては、
被処理物とガスを封入した気密性袋体の外側から加圧媒
体用の液体を介して行なわれ、危険性の高い高圧ガスを
使用しないので加圧手段やその周囲の設備、建屋に特別
の配慮が必要なく、通常の設備，建屋でよい。According to the sterilization method of the present invention, the substance to be treated is placed under a high-pressure gas, a large amount of the high-pressure gas is dissolved in the water in the cells of the microorganism, and then the pressure of the microorganism is rapidly reduced. The gas inside expands rapidly, and the energy crushes the cell walls surrounding the cells and kills them. At the same time, it causes the enzymes involved in metabolism in the microorganism to lose their function,
It kills microorganisms whose cell walls are not yet crushed. At this time, when pressurizing the gas,
It is carried out from the outside of the airtight bag that encloses the object to be treated and gas through the liquid for the pressurizing medium, and does not use high-risk high-pressure gas, so it is special for pressurizing means, surrounding equipment, and buildings. You don't need to worry about it, just use the normal equipment and building.
【００１６】さらに、圧力開放に際しても、高圧ガスの
射出とは異って、液体であるので広口径の圧力開放通路
が使用できるので、例えば圧力開放弁を単に切り換える
ことにより急速に圧力を低減でき、またこの際騒音も出
ない。Further, even when the pressure is released, unlike the injection of the high-pressure gas, since it is a liquid, a wide-diameter pressure release passage can be used, so that the pressure can be rapidly reduced by simply switching the pressure release valve, for example. Also, there is no noise at this time.
【００１７】また、本発明に係わる殺菌装置は、被処理
物をガスと共に封入した気密性袋体を液体と共に収容す
る耐圧容器と、液体を加圧注入する加圧手段と、耐圧容
器の加圧状態を解除する圧力解放手段とを備えているの
で上記殺菌方法を実施するのに適したものとなってい
る。Further, the sterilizing apparatus according to the present invention includes a pressure-resistant container for accommodating an object to be treated together with gas in an airtight bag together with a liquid, a pressurizing means for injecting the liquid under pressure, and a pressurization of the pressure-resistant container. Since it is provided with a pressure releasing means for releasing the state, it is suitable for carrying out the above sterilization method.
【００１８】[0018]
【実施例】本発明に係わる殺菌装置Ｓを図１に示す。耐
圧容器１は耐圧容器本体２と蓋体３とからなる。耐圧容
器本体２はステンレス鋼製の有底円筒形状をなし、上部
には外側方に突出したフランジ部２ｂを有している。FIG. 1 shows a sterilizing apparatus S according to the present invention. The pressure-resistant container 1 includes a pressure-resistant container body 2 and a lid 3. The pressure-resistant container main body 2 has a bottomed cylindrical shape made of stainless steel, and has a flange portion 2b protruding outward on the upper portion.
【００１９】耐圧容器本体２の上部にはステンレス鋼製
の蓋体３が載置され、ボルト４，４で耐圧容器本体２の
フランジ部２ｂと蓋体３の周辺部とを着脱自在に締結し
ている。A stainless steel lid 3 is placed on top of the pressure vessel body 2, and the flange portion 2b of the pressure vessel body 2 and the peripheral portion of the lid body 3 are detachably fastened with bolts 4 and 4. ing.
【００２０】耐圧容器本体２には加圧媒体用液体として
の水１０が充填され、この中にＣＯ２ガス７と共に被処
理物５を密封したポリエチレン製袋体６が浸漬されるよ
うになっており、袋体６には重り８，８を付けた位置決
め用のステンレス鋼線９，９が取付けられ、耐圧容器１
のほぼ中央に袋体６が位置するように構成されている。The pressure-resistant container main body 2 is filled with water 10 as a liquid for a pressurizing medium, and a polyethylene bag 6 in which the object to be treated 5 is sealed together with the CO 2 gas 7 is immersed therein. The stainless steel wires 9 and 9 with weights 8 attached to the bag body 6 are attached to the bag body 6, and the pressure-resistant container 1
The bag body 6 is located substantially in the center.
【００２１】耐圧容器本体２の側部下端には連通孔２ｃ
が穿設され、水１０を加圧注入する加圧手段である加圧
ポンプ１１が加圧通路１２を介して連結されている。A communication hole 2c is formed at the lower end of the side of the pressure-resistant container body 2.
A pressurizing pump 11 which is a pressurizing means for pressurizing and injecting the water 10 is connected via a pressurizing passage 12.
【００２２】一方、耐圧容器１の蓋体３の中央部には口
径の大きい連通孔３ｃが穿設され、加圧され、高圧とな
った水１０を速やかに逃がすことのできる口径の大きい
圧力開放通路１３に連結している。この圧力開放通路１
３の途中には圧力開放手段である圧力開放用切り換え弁
１４が設けられ、この弁を開放側に切り換えることによ
り耐圧容器１内の水１０を急激に外部に放出し、耐圧容
器１内の高圧状態を瞬時に大気圧に減圧することができ
るようになっている。On the other hand, a communication hole 3c having a large diameter is bored in the central portion of the lid 3 of the pressure-resistant container 1 to release the pressurized water 10 which has a high pressure and has a large diameter. It is connected to the passage 13. This pressure release passage 1
A pressure release switching valve 14 as a pressure release means is provided in the middle of 3, and by switching this valve to the opening side, the water 10 in the pressure resistant container 1 is rapidly discharged to the outside, and the high pressure inside the pressure resistant container 1 is increased. The state can be instantly reduced to atmospheric pressure.
【００２３】上記構成の殺菌装置Ｓを用いて食品等の殺
菌を行うには、まず被処理物５をポリエチレンフィルム
からなる袋体６に入れると共に、該袋体６の中にＣＯ２
ガスを封入する。そして、耐圧容器本体２の中に水１０
を入れ、この中に被処理物５と共にＣＯ２ガスを封入し
た前記袋体６を浸漬し、重り８，８とステンレス鋼線
９，９によりこの袋体６を耐圧容器１のほぼ中央に位置
させ、耐圧容器１の上部に蓋体３を載置し、ボルト４，
４で緊締することにより密閉する。In order to sterilize foods and the like using the sterilizing apparatus S having the above-mentioned structure, first, the object to be treated 5 is put in the bag body 6 made of polyethylene film, and CO 2 is put in the bag body 6.
Fill with gas. Then, water 10 is placed in the pressure-resistant container body 2.
Then, the bag body 6 in which CO 2 gas is enclosed together with the object to be treated 5 is dipped therein, and the bag body 6 is positioned substantially at the center of the pressure vessel 1 by the weights 8 and 8 and the stainless steel wires 9 and 9. Then, the lid 3 is placed on the pressure vessel 1 and the bolts 4,
Close by tightening with 4.
【００２４】次に、加圧ポンプ１１を作動させ、耐圧容
器本体２の連通孔２ｃより水１０を注入して耐圧容器１
内を加圧し、水１０を介して前記袋体６の内部の圧力を
上げる。このときの加圧は、温度上昇を防ぐ観点より、
段階的に昇圧して行くことが望ましい。Next, the pressurizing pump 11 is operated to inject the water 10 through the communication hole 2c of the pressure-resistant container main body 2 and the pressure-resistant container 1
The inside is pressurized, and the pressure inside the bag body 6 is increased through the water 10. Pressurization at this time, from the viewpoint of preventing the temperature rise,
It is desirable to increase the pressure stepwise.
【００２５】そして、所定の圧力に所定時間保持したの
ち、圧力開放用切換え弁１４を開き、耐圧容器１の加圧
状態を解除し、袋体６内の圧力を大気圧に戻す。このと
きの減圧は、殺菌効果を損うことのないように１秒以内
で行うことが望ましい。After the pressure is maintained at a predetermined pressure for a predetermined time, the pressure release switching valve 14 is opened to release the pressurization state of the pressure resistant container 1 to return the pressure in the bag body 6 to the atmospheric pressure. The pressure reduction at this time is preferably performed within 1 second so as not to impair the sterilization effect.
【００２６】表１は、本発明に係わる殺菌方法におい
て、殺菌処理条件の影響を調査した結果を示すものであ
る。Table 1 shows the results of investigations on the influence of sterilization conditions in the sterilization method according to the present invention.
【００２７】すなわち、被処理物としてナツメグ粉末を
用い、上記した方法に基づいて、最大圧力６０〜１００
ｋｇ／ｃｍ２，保持時間５〜６０分を組合わせた６種類
の処理条件Ａ〜Ｆにより殺菌したのち、大腸菌について
はデスオキコレート寒天培地を使用し、３７°Ｃ×１時
間培養したのち、一方、かびについてはポテトデキスト
ロース寒天培地を使用し、混釈平板法により、２５°Ｃ
×５日間培養したのち、サンプル１ｇあたりの生菌数を
出現したコロニー数により求め比較した。That is, using a nutmeg powder as the object to be processed, a maximum pressure of 60 to 100 was obtained based on the above method.
After sterilizing under 6 kinds of treatment conditions A to F, which are a combination of kg / cm 2 and a holding time of 5 to 60 minutes, for Escherichia coli, after using Desoxycholate agar medium and culturing at 37 ° C. for 1 hour, On the other hand, for mold, potato dextrose agar medium was used and the temperature was 25 ° C by the pour plate method.
After culturing for 5 days, the number of viable bacteria per 1 g of the sample was determined by the number of emerged colonies and compared.
【００２８】なお、この調査においては、圧力が４０ｋ
ｇ／ｃｍ２，６０ｋｇ／ｃｍ２，８０ｋｇ／ｃｍ２に到
達するごとに、加圧を中断し、その圧力にそれぞれ５分
間ずつ保持するようにした。加圧要領の一例として、処
理条件Ｆの圧力と時間の関係を図２に示す。In this investigation, the pressure was 40k.
Whenever g / cm 2 , 60 kg / cm 2 , or 80 kg / cm 2 was reached, the pressurization was stopped and the pressure was maintained for 5 minutes each. As an example of the pressurizing procedure, the relationship between the pressure of the processing condition F and time is shown in FIG.
【００２９】[0029]
【表１】 [Table 1]
【００３０】その結果、表１に示すように、大腸菌につ
いては本発明の殺菌処理前のものをデスオキコレート寒
天培養を使用し、混釈平板法により３７°Ｃ１日間培養
したものでは大腸菌群数が２．８×１０４存在したもの
が、本発明に係わる殺菌処理により処理条件Ａ〜Ｆのい
ずれにおいても大腸菌が陰性（＜１０／ｇ）を示し、殺
菌の効果が認められた。また、かびについては本発明の
殺菌処理前のものをポテトデキストロース寒天培地を使
用し、混釈平板法により２５°Ｃ５日間培養したもので
はかび数２．０×１０存在したものが、処理条件Ａ〜Ｅ
については陽性を示したものの、処理条件Ｆについては
陰性（＜１０／ｇ）となり、殺かびの効果が認められ
た。As a result, as shown in Table 1, for E. coli, the number of E. coli groups in the one before sterilization treatment of the present invention was used for desoccolate agar culture at 37 ° C for 1 day by the pour plate method. 2.8 × 10 4 were present, the Escherichia coli was negative (<10 / g) under any of the treatment conditions A to F by the sterilization treatment according to the present invention, and the sterilization effect was recognized. As for mold, the mold before sterilization treatment of the present invention was cultured on a potato dextrose agar medium at 25 ° C. for 5 days by the pour plate method, and the mold number was 2.0 × 10. ~ E
However, the treatment condition F was negative (<10 / g), and the fungicidal effect was recognized.
【００３１】図３は、本発明に係わる気密性の袋体の他
の形状例を示すものである。FIG. 3 shows another example of the shape of the airtight bag according to the present invention.
【００３２】すなわち、袋体３０は、肉厚容器３１と薄
肉容器３２とからなり、肉厚容器３１は高さｌ１＝１ｃ
ｍ，巾ｌ２＝１０ｃｍ，長さｌ３＝１０ｃｍ，肉厚０．
２ｍｍの中空直方体で一側面のみが開口３１ａを備えた
ポリエチレン製の容器である。That is, the bag body 30 comprises a thick container 31 and a thin container 32, and the thick container 31 has a height l 1 = 1c.
m, width l 2 = 10 cm, length l 3 = 10 cm, wall thickness 0.
It is a polyethylene container having a hollow rectangular parallelepiped of 2 mm and having an opening 31a on only one side surface.
【００３３】一方、薄肉容器３２は高さＬ１＝８ｃｍ，
巾Ｌ２＝１５ｃｍ，長さＬ３＝１５ｍｍ，厚さ０．０５
ｍｍの袋で一側面に開口３２ａを有し、一端部にＣＯ２
ガス注入口３２ｂを有するものである。On the other hand, the thin container 32 has a height L 1 = 8 cm,
Width L 2 = 15 cm, length L 3 = 15 mm, thickness 0.05
mm bag with an opening 32a on one side and CO 2 at one end
It has a gas inlet 32b.
【００３４】殺菌処理に際しては、被処理物を厚肉容器
３１の中に入れ、厚肉容器３１の開孔３１ａと薄肉容器
３２の開口３２ａとを合致させ連通させた後、両者を熱
融着により接合する。その後、薄肉容器３２のＣＯ２ガ
ス注入口３２ｂよりＣＯ２ガスを充満させた後、ＣＯ２
ガス注入口３２ｂを熱融着により閉じる。In the sterilization treatment, the object to be treated is put in the thick-walled container 31, the opening 31a of the thick-walled container 31 and the opening 32a of the thin-walled container 32 are aligned and communicated with each other, and then both are heat-sealed. To join. Then, after filling the CO 2 gas from the CO 2 gas inlet 32b of the thin container 32, CO 2
The gas inlet 32b is closed by heat fusion.
【００３５】これを耐圧容器１内に設置し、同様に高圧
をかけた後、急減圧をし、被処理物を殺菌する。This is placed in a pressure resistant container 1, and after similarly high pressure is applied, it is rapidly depressurized to sterilize the object to be treated.
【００３６】被処理物５を厚肉容器３１内に全て移動さ
せ、薄肉容器の開口３２ａを熱融着により閉じることに
より、厚肉容器３１内は殺菌された状態の被処理物５が
収納されており、また、厚肉容器３１は偏平な立方体形
状を保っていて持ち運び、移動に便利である。By moving all of the object 5 to be processed into the thick-walled container 31 and closing the opening 32a of the thin-walled container by heat fusion, the material 5 to be processed in a sterilized state is stored in the thick-walled container 31. In addition, the thick-walled container 31 has a flat cubic shape and is convenient to carry and move.
【００３７】[0037]
【発明の効果】以上説明したように、本発明に係わる殺
菌方法および装置は、上記構成としたことにより、被処
理物と共に袋体に封入されたガスが液体を介して加圧さ
れるので、高圧ガスを使用する場合にくらべ作業の安全
性が高く、耐圧容器や周辺設備に費用がかからず、低コ
ストの殺菌が可能となり、高圧ガスを使用しないので特
別な資格を必要とせず、誰にでも容易に作業することが
できる。As described above, the sterilizing method and apparatus according to the present invention are configured as described above, so that the gas enclosed in the bag together with the object to be treated is pressurized through the liquid, Compared to the case of using high pressure gas, the work safety is higher, the pressure container and peripheral equipment are less expensive, low cost sterilization is possible, and since high pressure gas is not used, no special qualification is required, You can easily work on it.
【００３８】さらに、高圧力を開放する際に、高圧ガス
でなく、液体であるので広口径の開放通路を使用できる
ので、急激に減圧でき、したがって、被処理物の殺菌効
果も大きい。また、圧力開放の際に騒音の心配もいらな
い。Further, when releasing the high pressure, since it is not a high-pressure gas but a liquid, a wide-diameter open passage can be used, so that the pressure can be rapidly reduced, and therefore the sterilizing effect of the object to be treated is great. Moreover, there is no need to worry about noise when the pressure is released.
【図１】本発明に係わる殺菌装置の一実施例を示す一部
断面概念説明図である。FIG. 1 is a partially sectional conceptual explanatory view showing an embodiment of a sterilizing apparatus according to the present invention.
【図２】本発明に係わる高圧ガス殺菌方法における加圧
時の圧力と時間との関係の一例を示すグラフである。FIG. 2 is a graph showing an example of the relationship between pressure and time during pressurization in the high-pressure gas sterilization method according to the present invention.
【図３】本発明に係わる殺菌方法に用いる袋体の他の形
状例を示す斜視図である。FIG. 3 is a perspective view showing another example of the shape of the bag body used in the sterilization method according to the present invention.
【図４】従来の殺菌装置の概念説明図である。FIG. 4 is a conceptual explanatory view of a conventional sterilizer.
Ｓ…殺菌装置 １…耐圧容器 ２…耐圧容器本体 ３…蓋体 ５…被処理物 ６…袋体 ７…ＣＯ２ガス １０…水（加圧媒体用液体） １１…加圧ポンプ（加圧手段） １４…圧力開放切り換え弁（圧力開放手段） ３０…袋体 ３１…厚肉容器 ３２…薄肉容器S ... Sterilizer 1 ... Pressure-resistant container 2 ... Pressure-resistant container body 3 ... Lid 5 ... Object 6 ... Bag 7 ... CO 2 gas 10 ... Water (liquid for pressurizing medium) 11 ... Pressurizing pump (pressurizing means) ) 14 ... Pressure release switching valve (pressure release means) 30 ... Bag 31 ... Thick container 32 ... Thin container
Claims (5)
体を耐圧容器内に充填した加圧媒体用液体中に浸漬した
のち、耐圧容器を密閉し、密閉状態の耐圧容器内に加圧
媒体用液体を加圧注入することにより前記袋体内を所定
圧力に保持すると共に、 所定時間経過後に耐圧容器の加圧状態を急速に解除する
ことを特徴とする殺菌方法。1. A pressure-tight container is sealed by immersing an airtight bag in which an object to be treated is sealed together with a gas in a liquid for a pressurized medium filled in the pressure-resistant container, and then pressurized in the sealed pressure-resistant container. A sterilization method characterized in that the medium for liquid is pressurized and injected to keep the inside of the bag at a predetermined pressure, and the pressurized state of the pressure-resistant container is rapidly released after a lapse of a predetermined time.
とする請求項１記載の殺菌方法。2. The sterilizing method according to claim 1, wherein the applied pressure is increased stepwise.
であることを特徴とする請求項１または２記載の殺菌方
法。3. The maximum applied pressure is 60 to 500 kg / cm 2.
The sterilization method according to claim 1 or 2, wherein
体を加圧媒体用液体と共に収容する耐圧容器と、 前記耐圧容器内に加圧媒体用液体を加圧注入する加圧手
段と、 前記耐圧容器の加圧状態を解除する圧力開放手段を備え
たことを特徴とする殺菌装置。4. A pressure resistant container for accommodating an airtight bag in which an object to be treated is enclosed together with gas together with a liquid for a pressure medium, and a pressure means for injecting a liquid for a pressure medium into the pressure container under pressure. A sterilizing apparatus comprising a pressure releasing means for releasing the pressurized state of the pressure resistant container.
の薄い薄肉容器とからなることを特徴とする請求項４記
載の殺菌装置。5. The sterilizer according to claim 4, wherein the airtight bag body comprises a thick container having a large wall thickness and a thin container having a thin wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08306094A JP3405587B2 (en) | 1994-04-21 | 1994-04-21 | Sterilization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08306094A JP3405587B2 (en) | 1994-04-21 | 1994-04-21 | Sterilization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07289218A true JPH07289218A (en) | 1995-11-07 |
| JP3405587B2 JP3405587B2 (en) | 2003-05-12 |
Family
ID=13791651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08306094A Expired - Fee Related JP3405587B2 (en) | 1994-04-21 | 1994-04-21 | Sterilization method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3405587B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247941A (en) * | 2008-04-02 | 2009-10-29 | Kumamoto Univ | Shock wave treatment method and treatment apparatus |
| JP2009247942A (en) * | 2008-04-02 | 2009-10-29 | Kumamoto Univ | Shock wave treatment apparatus |
| JP2019033703A (en) * | 2017-08-17 | 2019-03-07 | Ｈｉｇｈ−Ｐｒｅｓｓｕｒｅ Ｓｕｐｐｏｒｔ株式会社 | Method for storing food and container for storing food |
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| JPS59210873A (en) * | 1983-05-12 | 1984-11-29 | Reiji Futaki | Method for sterilization under high pressure |
| JPS6037964A (en) * | 1983-08-09 | 1985-02-27 | Mitsubishi Gas Chem Co Inc | Preservation of food |
| JPS6131084U (en) * | 1984-07-31 | 1986-02-25 | 桑野食品工業株式会社 | raw rice cake packaging |
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| JPH0383566A (en) * | 1989-08-25 | 1991-04-09 | Toppan Printing Co Ltd | Processing of food |
| JPH057479A (en) * | 1990-09-28 | 1993-01-19 | Toppan Printing Co Ltd | Method for high-pressure sterilizing treatment |
| JPH0576329A (en) * | 1991-09-19 | 1993-03-30 | Shokuhin Sangyo Chokoatsu Riyou Gijutsu Kenkyu Kumiai | Sterilization of fluid material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59210873A (en) * | 1983-05-12 | 1984-11-29 | Reiji Futaki | Method for sterilization under high pressure |
| JPS6037964A (en) * | 1983-08-09 | 1985-02-27 | Mitsubishi Gas Chem Co Inc | Preservation of food |
| JPS6131084U (en) * | 1984-07-31 | 1986-02-25 | 桑野食品工業株式会社 | raw rice cake packaging |
| JPS6269969A (en) * | 1985-09-24 | 1987-03-31 | Kobe Steel Ltd | High-pressure sterilization apparatus |
| JPH0383566A (en) * | 1989-08-25 | 1991-04-09 | Toppan Printing Co Ltd | Processing of food |
| JPH057479A (en) * | 1990-09-28 | 1993-01-19 | Toppan Printing Co Ltd | Method for high-pressure sterilizing treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247941A (en) * | 2008-04-02 | 2009-10-29 | Kumamoto Univ | Shock wave treatment method and treatment apparatus |
| JP2009247942A (en) * | 2008-04-02 | 2009-10-29 | Kumamoto Univ | Shock wave treatment apparatus |
| JP2019033703A (en) * | 2017-08-17 | 2019-03-07 | Ｈｉｇｈ−Ｐｒｅｓｓｕｒｅ Ｓｕｐｐｏｒｔ株式会社 | Method for storing food and container for storing food |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3405587B2 (en) | 2003-05-12 |
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