JPS6326017B2 - - Google Patents
Info
- Publication number
- JPS6326017B2 JPS6326017B2 JP13615880A JP13615880A JPS6326017B2 JP S6326017 B2 JPS6326017 B2 JP S6326017B2 JP 13615880 A JP13615880 A JP 13615880A JP 13615880 A JP13615880 A JP 13615880A JP S6326017 B2 JPS6326017 B2 JP S6326017B2
- Authority
- JP
- Japan
- Prior art keywords
- organic acid
- sterilization
- ultraviolet
- tank
- sterilized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001954 sterilising effect Effects 0.000 claims description 75
- 238000004659 sterilization and disinfection Methods 0.000 claims description 58
- 150000007524 organic acids Chemical class 0.000 claims description 42
- 239000005022 packaging material Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 16
- 235000005985 organic acids Nutrition 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 235000013305 food Nutrition 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 235000014469 Bacillus subtilis Nutrition 0.000 description 4
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 4
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004310 lactic acid Substances 0.000 description 4
- 235000014655 lactic acid Nutrition 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 241000228245 Aspergillus niger Species 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 210000004666 bacterial spore Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000011045 prefiltration Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- 101000765308 Aspergillus niger N-(5'-phosphoribosyl)anthranilate isomerase Proteins 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- PHOQVHQSTUBQQK-SQOUGZDYSA-N D-glucono-1,5-lactone Chemical compound OC[C@H]1OC(=O)[C@H](O)[C@@H](O)[C@@H]1O PHOQVHQSTUBQQK-SQOUGZDYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 240000001929 Lactobacillus brevis Species 0.000 description 1
- 241000235070 Saccharomyces Species 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 230000000172 allergic effect Effects 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 235000015197 apple juice Nutrition 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 238000004388 gamma ray sterilization Methods 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 235000012209 glucono delta-lactone Nutrition 0.000 description 1
- 239000000182 glucono-delta-lactone Substances 0.000 description 1
- 229960003681 gluconolactone Drugs 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000015205 orange juice Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000004215 spore Anatomy 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Description
（産業上の利用分野）
本発明は有機酸類と紫外線とを併用することに
より相乗的殺菌効果をもたせることのできる包装
材料の殺菌方法および装置に関する。
（従来の技術）
従来の包装材料の殺菌方法のうち化学殺菌方法
としては、過酸化水素殺菌、エチレンオキサイド
ガス殺菌、プロピレンオキサイドガス殺菌等があ
る。
また、化学殺菌法以外の殺菌法としては物理的
な殺菌法がある。この殺菌法では、例えばγ線、
紫外線等が用いられる。
また、特開昭50−50187号公報に記載のように、
包装材料を過酸化水素やアルコール等の殺菌液に
浸漬した後それに紫外線および電子線を放射して
殺菌を行なうことも知られている。
（発明が解決しようとする問題点）
前記したもののうちのエチレンオキサイドガス
殺菌およびプロピレンオキサイドガス殺菌による
包装材料の殺菌は有効な手段であり、とくに包装
材料作製の最終段階で殺菌できるという点で利点
が多いが、これらのガスは有毒ガスであるために
包装材料中の残留ガスが問題となることが多い。
また、過酸化水素についてもその発ガス性が発
見され、これまでのように殺菌剤として利用する
ことは困難となつてきている。
また、前記したγ線殺菌はプラスチツク包材を
透過するので、ガス殺菌と同様に最終工程で殺菌
でき有効な殺菌方法である。しかし、この方法に
もγ線照射後のヒートシール強度の低下ならびに
プラスチツクフイルムの黄変等の物性での劣化が
みられる。またγ線は日本人特有の放射線アレル
ギーのため、社会的に受入れられにくいという難
点がある。一方、紫外線殺菌は紫外線そのものが
他の放射線に比較して人体に対し影響が少なく取
扱いが容易であり、しかも化学殺菌に比較して残
留物が残らずその点での問題は少ない。しかし、
紫外線は包装材料の表面のみにしか作用しないた
めに塵埃等が付着しているとその部分は殺菌でき
ず完全殺菌は望めない。
一方、前記特開昭50−50187号公報に記載の殺
菌方法では、過酸化水素の使用は前述の理由によ
り好ましくなく、またアルコールの使用は害がな
いとは言え、包装材料をそれに浸漬する工程が進
むにつれアルコール中に細菌、塵埃等が含まれる
ようになり、その殺菌能力が急激に低下し、しか
もアルコール中の塵埃が付着した状態で包材が紫
外線等の照射を受けるので、その付着部分は殺菌
されずに残つてしまう。
本発明は従来技術の上述の問題点を解決するた
めになされたもので、その目的は、人体に無害な
殺菌液を用い、しかも紫外線照射と殺菌液による
相乗殺菌効果を利用し、さらに常に殺菌液の殺菌
能力の低下を防いで、完全な殺菌効果を得ること
にある。
（問題点を解決するための手段）
本発明の包装材料の殺菌方法は、酸性食品を包
装する包装材料を加温された有機酸に接触させて
殺菌するとともに、該有機酸を循環され、循環す
る有機酸をフイルタに通す工程および循環する有
機酸に紫外線を照射する工程の少なくとも一方に
よつて上記有機酸を無菌化し、この無菌化された
有機酸によつて殺菌された包装材料に紫外線を照
射して、さらに殺菌を行うことを特徴とする。
本発明では、包装材料をまず有機酸に浸漬して
殺菌する。酸性食品の場合に増殖する細菌は、カ
ビ類、酵母、乳酸菌であるが、有機酸はこの三者
を殆んど死滅させることができるばかりでなく、
酸性食品の味を変化させることがない。本発明で
用いる有機酸としては、クエン酸、グルコノデル
タラクトングルコン酸、コハク酸、酒石酸、乳
酸、酢酸、フマル酸、リンゴ酸等が望ましいが、
これらに限定されるものではない。また、殺菌力
の点からpHを3.0以下にして使用し、さらに液温
を65℃以上にして利用する事により著しい効果を
奏しうる。
有機酸による殺菌の効果を示すためにその一例
を次に示す。
ポリエチレンとポリスチレンを貼合せたフイル
ムを100cm2の大きさに切り、カビ類として106個の
菌数のAspergillus niger、酵母類として
Saccharomyces cerevisiae、乳酸菌類として
Lactobacillus brevisおよび細菌胞子として102個
のBacillus Subtilisを各々噴霧し乾燥させ検体と
し、この検体をクエン酸の0.01重量％水溶液（pH
2.6）中に５秒から30秒間浸漬した。そしてクエ
ン酸水溶液の温度を45℃から70℃まで変化させて
処理を行なつた。検体を浸漬処理後乾燥させ無菌
的に培地を流し込み、結果を判定した。この時の
培養条件は次の表１に示す通りであり、培養結果
は表２に示す通りであつた。
(Industrial Application Field) The present invention relates to a packaging material sterilization method and apparatus that can provide a synergistic sterilization effect by using organic acids and ultraviolet rays in combination. (Prior Art) Among conventional methods for sterilizing packaging materials, chemical sterilization methods include hydrogen peroxide sterilization, ethylene oxide gas sterilization, and propylene oxide gas sterilization. Moreover, as a sterilization method other than the chemical sterilization method, there is a physical sterilization method. In this sterilization method, for example, gamma rays,
Ultraviolet light or the like is used. Also, as described in Japanese Patent Application Laid-Open No. 50-50187,
It is also known to sterilize packaging materials by immersing them in a sterilizing liquid such as hydrogen peroxide or alcohol and then irradiating them with ultraviolet light and electron beams. (Problems to be Solved by the Invention) Among the above-mentioned methods, sterilization of packaging materials by ethylene oxide gas sterilization and propylene oxide gas sterilization is an effective means, and is particularly advantageous in that it can be sterilized at the final stage of packaging material production. However, since these gases are toxic, residual gases in packaging materials often become a problem. Furthermore, gas-emitting properties of hydrogen peroxide have been discovered, making it difficult to use it as a disinfectant as before. Furthermore, since the above-mentioned γ-ray sterilization penetrates through plastic packaging materials, it is an effective sterilization method that can sterilize in the final step, similar to gas sterilization. However, even with this method, deterioration in physical properties such as a decrease in heat sealing strength and yellowing of the plastic film after irradiation with gamma rays is observed. Another drawback is that gamma rays are difficult to accept socially because Japanese people are allergic to radiation. On the other hand, in ultraviolet sterilization, the ultraviolet rays themselves have less of an effect on the human body than other radiations, and are easier to handle.Moreover, compared to chemical sterilization, they leave no residue and are less problematic in this respect. but,
Since ultraviolet rays act only on the surface of the packaging material, if dust or the like is attached, that part cannot be sterilized and complete sterilization cannot be expected. On the other hand, in the sterilization method described in JP-A-50-50187, the use of hydrogen peroxide is not preferable for the reasons mentioned above, and although the use of alcohol is harmless, there is a step of immersing the packaging material in it. As alcohol progresses, bacteria, dust, etc. are included in the alcohol, and its sterilizing ability rapidly decreases.Moreover, the packaging material is exposed to ultraviolet rays, etc. while the dust in the alcohol is still attached, so the attached parts remain unsterilized. The present invention was made in order to solve the above-mentioned problems of the prior art.The purpose of the present invention is to use a sterilizing liquid that is harmless to the human body, and to utilize the synergistic sterilizing effect of ultraviolet irradiation and the sterilizing liquid, and to constantly sterilize the body. The objective is to prevent the deterioration of the sterilizing ability of the liquid and obtain a complete sterilizing effect. (Means for Solving the Problems) The packaging material sterilization method of the present invention sterilizes the packaging material for packaging acidic foods by bringing it into contact with a heated organic acid, and at the same time, the organic acid is circulated. The organic acid is sterilized by at least one of passing the organic acid through a filter and irradiating the circulating organic acid with ultraviolet rays, and the packaging material sterilized by the sterilized organic acid is irradiated with ultraviolet rays. It is characterized by further sterilization by irradiation. In the present invention, the packaging material is first sterilized by soaking it in an organic acid. The bacteria that grow in acidic foods are mold, yeast, and lactic acid bacteria, but organic acids can not only kill most of these three, but also
Does not change the taste of acidic foods. Desirable organic acids used in the present invention include citric acid, gluconodelta-lactone gluconic acid, succinic acid, tartaric acid, lactic acid, acetic acid, fumaric acid, malic acid, etc.
It is not limited to these. In addition, from the viewpoint of bactericidal power, remarkable effects can be achieved by using the solution at a pH of 3.0 or lower and at a liquid temperature of 65°C or higher. An example is shown below to demonstrate the sterilizing effect of organic acids. A film made by laminating polyethylene and polystyrene was cut into 100cm2 pieces, and 106 Aspergillus niger bacteria were added as molds, and Aspergillus niger as yeast.
Saccharomyces cerevisiae, as lactic acid bacteria
Lactobacillus brevis and 102 Bacillus subtilis as bacterial spores were each sprayed and dried to serve as a specimen, and this specimen was mixed with a 0.01% by weight aqueous solution of citric acid (pH
2.6) for 5 to 30 seconds. The temperature of the citric acid aqueous solution was then varied from 45°C to 70°C. After the specimen was immersed, it was dried, a medium was poured into it aseptically, and the results were determined. The culture conditions at this time were as shown in Table 1 below, and the culture results were as shown in Table 2.
【表】【table】
【表】
以上の結果かるわかるように、65℃以上にてク
エン酸を使用することにより、細菌胞子を除き、
カビ、酵母、乳酸菌を完全死滅させる事ができ
た。
前記条件にてPE（ポリエチレン）／PS（ポリエ
チレン）製の容積250mlパウチを殺菌し、通常の
加熱殺菌処理をほどこしたオレンジジユースとリ
ンドジユースを各100袋ずつ15℃の状態で無菌的
に充填密封した。さらに、殺菌処理をしない同様
のパウチに通常の加熱殺菌処理をほどこしたオレ
ンジジユースとリンゴジユースを15℃の状態で各
100袋ずつ充填密封した。該殺菌処理済みのパウチ
入りジユースと、未処理パウチ入りジユースを30
℃の状態で１カ月間保存テストを行ない、比較検
討を行なつた所、未処理パウチのものは総て腐敗
が認められた。殺菌処理済みのものは全てがなん
の変化を認められず、賞味を維持していた。
以上に述べた結果から明らかなように、有機酸
の一例としてのクエン酸は特に65℃以上において
優れた殺菌作用を呈するが、殺菌胞子については
その殺菌力は十分でない。本発明では、有機酸を
無菌化装置内を循環させて無菌化することによつ
て、その殺菌力を十分に発揮させるものである。
有機酸の無菌化のためには、有機酸をフイルター
を通して過するか、紫外線によつて無菌化する
か、またはフイルターによる過および紫外線に
よる無菌化の両方の手段を採る。
このように、包装材料の殺菌のための有機酸自
体を無菌化装置を通して無菌化しつつ包装材料の
殺菌を行なつたところ、次の結果を得た。
すなわち、ポリエチレンとポリスチレンを貼合
せたフイルムのポリエチレンの側に、100cm2あた
り、それぞれ102個のB.subtilis、106個の
Aspergillus nigerおよび106個のSaccharomyces
cerevisiaeを噴霧して乾燥させた材料をクエン酸
を満した殺菌槽に通し、同時にフイルターおよび
紫外線殺菌装置によつてクエン酸の無菌化を行つ
た。この場合、殺菌槽の容量は50リツトルとし、
クエン酸を１／minの流量で循環させるととも
に、紫外線ランプとしてBBC UV−C13を用い、
プレフイルターにて18μ以上のものを100％除去
した後、メインフイルターにて0.2μ以上のものを
100％除去した。そして、２時間の運転後次の表
３に示す結果を得た。[Table] As can be seen from the above results, using citric acid at temperatures above 65℃ removes bacterial spores.
We were able to completely kill mold, yeast, and lactic acid bacteria. Sterilize 250ml PE (polyethylene)/PS (polyethylene) pouches under the above conditions, and aseptically fill and seal 100 bags each of Orange Youth and Lindo Youth, which have undergone normal heat sterilization treatment, at 15℃. did. In addition, orange juice and apple juice that had been subjected to normal heat sterilization were placed in similar pouches without sterilization at 15°C.
100 bags each were filled and sealed. 30 sterilized youth in pouches and 30 untreated youth in pouches
A storage test was carried out for one month at ℃ and a comparative study revealed that all untreated pouches had rotted. No changes were observed in all of the sterilized products, which maintained their delicious taste. As is clear from the results described above, citric acid, which is an example of an organic acid, exhibits an excellent bactericidal effect particularly at temperatures above 65°C, but its bactericidal activity is not sufficient against bactericidal spores. In the present invention, by circulating an organic acid in a sterilization device for sterilization, the sterilizing power is fully exhibited.
In order to sterilize the organic acid, the organic acid is passed through a filter, sterilized by ultraviolet rays, or both sterilized by passing through a filter and sterilized by ultraviolet rays. In this way, when the packaging material was sterilized while the organic acid itself was passed through the sterilization device to sterilize the packaging material, the following results were obtained. That is, on the polyethylene side of a film made by laminating polyethylene and polystyrene, 10 2 B. subtilis and 10 6 B. subtilis were planted per 100 cm 2 respectively.
Aspergillus niger and 10 6 Saccharomyces
The material sprayed with E. cerevisiae and dried was passed through a sterilization tank filled with citric acid, and at the same time the citric acid was sterilized using a filter and an ultraviolet sterilizer. In this case, the capacity of the sterilization tank is 50 liters,
While circulating citric acid at a flow rate of 1/min, a BBC UV-C13 was used as an ultraviolet lamp.
After removing 100% of things over 18μ with the pre-filter, things over 0.2μ are removed with the main filter.
100% removed. After 2 hours of operation, the results shown in Table 3 below were obtained.
【表】
表３から明らかなように、フイルターのみ、ま
たは紫外線殺菌器のみ、またはその両者を用いる
ことによつて、B.subtilisが完全に除去されるこ
とがわかる。
以上に述べたように、本発明によれば、有機酸
により包装材料を殺菌するとともに、殺菌用有機
酸を少くともフイルターを含む無菌化装置内を循
環させることによつて、優れた殺菌を行なうこと
ができる。
本発明によれば、上述の無菌化に加えて、さら
に紫外線が殺菌のために用いられる。
紫外線自在の殺菌効果は次の表４に示す通りで
ある。[Table] As is clear from Table 3, B. subtilis is completely removed by using only a filter, only an ultraviolet sterilizer, or both. As described above, according to the present invention, excellent sterilization is achieved by sterilizing packaging materials with an organic acid and by circulating the sterilizing organic acid through a sterilization device that includes at least a filter. be able to. According to the invention, in addition to the sterilization described above, ultraviolet light is also used for sterilization. The sterilizing effect of UV rays is shown in Table 4 below.
以上に実施例について述べたように、本発明に
よれば、有機酸による殺菌と紫外線照射による相
乗効果によつて短時間で強力な殺菌を行なうこと
ができ、しかも殺菌用の有機酸を循環させつつ無
菌化することによつて一層完全な殺菌をすること
が可能となる。
As described above with respect to the embodiments, according to the present invention, strong sterilization can be carried out in a short time due to the synergistic effect of sterilization by organic acid and ultraviolet irradiation, and moreover, the organic acid for sterilization can be circulated. By doing so, it becomes possible to perform more complete sterilization.
第１図および第２図は、有機酸への浸漬と紫外
線照射の片方のみを用いた場合および両方を併用
した場合における殺菌状態を比較して示す異なる
２つの例を示すグラフ、第３図は本発明の包装材
料殺菌装置の一例を示す図である。
２……殺菌槽、４……有機酸、６，……２４
……ヒータ、Ｐ……包装材料、１２……送りロー
ラ、１４……循環路、２０……貯留槽、３０……
ポンプ、３４……プレフイルター、３６……メイ
ンフイルター、３８……紫外線殺菌装置、４０…
…紫外線発生器、４２……隔壁、４４……流路、
５０……有機酸吹付け用ノズル、５８……紫外線
殺菌装置、６２……紫外線ランプ、８４……巻取
りスプール。
Figures 1 and 2 are graphs showing two different examples comparing the sterilization status when using only one of organic acid immersion and ultraviolet irradiation and when both are used together. It is a figure showing an example of a packaging material sterilization device of the present invention. 2...Sterilization tank, 4...Organic acid, 6,...24
... Heater, P ... Packaging material, 12 ... Feed roller, 14 ... Circulation path, 20 ... Storage tank, 30 ...
Pump, 34... Prefilter, 36... Main filter, 38... Ultraviolet sterilizer, 40...
... Ultraviolet generator, 42 ... Partition wall, 44 ... Channel,
50... Organic acid spraying nozzle, 58... Ultraviolet sterilizer, 62... Ultraviolet lamp, 84... Winding spool.
Claims (1)
機酸に接触させて殺菌するとともに、該有機酸を
循環させ、循環する有機酸をフイルタに通す工程
および循環する有機酸に紫外線を照射する工程の
少なくとも一方によつて上記有機酸を無菌化し、
この無菌化された有機酸によつて殺菌された包装
材料に紫外線を照射して、さらに殺菌を行うこと
を特徴とする包装材料の殺菌方法。 ２ 有機酸を65℃以上に加温して使用する特許請
求の範囲第１項記載の殺菌方法。 ３ 有機酸をpH3.0以下で使用する特許請求の範
囲第１項記載の殺菌方法。 ４ 有機酸を貯留する殺菌槽と、この殺菌槽内の
有機酸内に包装材料を通過させる装置と、殺菌槽
内の有機酸を該殺菌槽から出て殺菌槽に戻る循環
路を経て循環させる装置と、有機酸を過するフ
イルタおよび紫外線殺菌装置の少なくとも一方を
有し上記循環路に設けられた無菌化装置と、殺菌
槽内の有機酸に触れて殺菌され殺菌槽外へ送り出
された包装材料に、該包装材料の通路に沿つてそ
の両側に設けられた紫外線ランプにより紫外線を
照射する紫外線照射装置とを有することを特徴と
する包装材料の殺菌装置。 ５ 殺菌槽に有機酸加熱装置を設けてなる特許請
求の範囲第４項記載の殺菌装置。 ６ 有機酸の循環路に有機酸貯留槽を設け、この
貯留槽の下流側にフイルタを設けてなる特許請求
の範囲第４項記載の殺菌装置。 ７ 貯留槽に有機酸加熱装置を設けてなる特許請
求の範囲第６項記載の殺菌装置。 ８ 紫外線殺菌装置を、紫外線発生装置と、この
紫外線発生装置に対し透明な隔壁を介して隣接す
る有機酸流路とによつて構成してなる特許請求の
範囲第４項記載の殺菌装置。 ９ 紫外線照射装置の紫外線ランプを、包装材料
の通路に対して進退自在に支持してなる特許請求
の範囲第４項記載の殺菌装置。 １０ 循環路内で無菌化装置によつて無菌化され
た有機酸を殺菌槽から送り出される包装材料の面
に吹きつける装置を設けた特許請求の範囲第４項
記載の殺菌装置。[Claims] 1. A process of sterilizing packaging materials for packaging acidic foods by contacting them with a heated organic acid, circulating the organic acid, and passing the circulating organic acid through a filter, and a process of circulating the organic acid. sterilizing the organic acid by at least one of the steps of irradiating it with ultraviolet rays,
A method for sterilizing packaging materials, which comprises irradiating the packaging materials sterilized with the sterilized organic acid with ultraviolet rays to further sterilize them. 2. The sterilization method according to claim 1, which uses an organic acid heated to 65°C or higher. 3. The sterilization method according to claim 1, wherein the organic acid is used at a pH of 3.0 or less. 4. A sterilization tank for storing an organic acid, a device for passing the packaging material through the organic acid in the sterilization tank, and a circulation path for the organic acid in the sterilization tank to exit from the sterilization tank and return to the sterilization tank. a sterilization device having at least one of a filter for passing organic acids and an ultraviolet sterilization device and provided in the circulation path; and a package sterilized by contact with the organic acid in the sterilization tank and sent out of the sterilization tank. An apparatus for sterilizing packaging materials, comprising an ultraviolet irradiation device that irradiates the materials with ultraviolet rays using ultraviolet lamps provided on both sides along the path of the packaging materials. 5. The sterilization device according to claim 4, wherein the sterilization tank is provided with an organic acid heating device. 6. The sterilizer according to claim 4, wherein an organic acid storage tank is provided in the organic acid circulation path, and a filter is provided on the downstream side of this storage tank. 7. The sterilization device according to claim 6, wherein the storage tank is provided with an organic acid heating device. 8. The sterilizer according to claim 4, wherein the ultraviolet sterilizer is constituted by an ultraviolet generator and an organic acid flow path adjacent to the ultraviolet generator via a transparent partition. 9. The sterilization device according to claim 4, wherein the ultraviolet lamp of the ultraviolet irradiation device is supported so as to be movable forward and backward with respect to the passage of the packaging material. 10. The sterilization device according to claim 4, further comprising a device for spraying the organic acid sterilized by the sterilization device in the circulation path onto the surface of the packaging material sent out from the sterilization tank.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13615880A JPS5768328A (en) | 1980-09-30 | 1980-09-30 | Method and apparatus for sterilizing packing material |
| US06/247,209 US4396582A (en) | 1980-03-31 | 1981-03-24 | Method and apparatus for sterilizing food packages or the like |
| CA000373730A CA1155271A (en) | 1980-03-31 | 1981-03-24 | Method and apparatus for sterilizing food packages or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13615880A JPS5768328A (en) | 1980-09-30 | 1980-09-30 | Method and apparatus for sterilizing packing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5768328A JPS5768328A (en) | 1982-04-26 |
| JPS6326017B2 true JPS6326017B2 (en) | 1988-05-27 |
Family
ID=15168664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13615880A Granted JPS5768328A (en) | 1980-03-31 | 1980-09-30 | Method and apparatus for sterilizing packing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5768328A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05178334A (en) * | 1990-10-23 | 1993-07-20 | Aichi Pref Gov | Method and device for sterilizing packing material |
-
1980
- 1980-09-30 JP JP13615880A patent/JPS5768328A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5768328A (en) | 1982-04-26 |
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