WO2019059162A1 - Method for sterilizing surface of bird egg - Google Patents

Method for sterilizing surface of bird egg Download PDF

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Publication number
WO2019059162A1
WO2019059162A1 PCT/JP2018/034398 JP2018034398W WO2019059162A1 WO 2019059162 A1 WO2019059162 A1 WO 2019059162A1 JP 2018034398 W JP2018034398 W JP 2018034398W WO 2019059162 A1 WO2019059162 A1 WO 2019059162A1
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Prior art keywords
egg
peracetic acid
acid solution
avian
eggs
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PCT/JP2018/034398
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French (fr)
Japanese (ja)
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英治 今枝
和也 塩釜
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エンビロテックジャパン株式会社
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Priority to JP2019543629A priority Critical patent/JPWO2019059162A1/en
Publication of WO2019059162A1 publication Critical patent/WO2019059162A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K43/00—Testing, sorting or cleaning eggs ; Conveying devices ; Pick-up devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/02—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group; Thio analogues thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B5/00—Preservation of eggs or egg products
    • A23B5/08—Preserving with chemicals
    • A23B5/12—Preserving with chemicals in the form of liquids or solids
    • A23B5/14—Organic compounds; Microorganisms; Enzymes

Definitions

  • the present invention relates to a method of sterilizing the surface of avian eggs.
  • Priority is claimed on Japanese Patent Application No. 2017-196406, filed September 21, 2017, the content of which is incorporated herein by reference.
  • Egg laying starts with ovulation performed after formation of mature follicles, and oviposition is performed from the total excretory opening through the funnel, the ampulla, the narrow part, the eggshell gland and the eggshell vagina.
  • a mucus of a protein containing sugar is secreted in the egg-shell vaginal area in order to facilitate the ovulation, and the surface is made smooth by adhering to the surface.
  • the total excretory port in this ovulation process it comes into contact with intestinal bacteria, and the bacteria adhere to the cuticular layer composed of proteins on the surface of the eggshell.
  • Patent Document 1 discloses an apparatus for washing an egg with acetic acid and then washing with weakly acidic electrolyzed water having a chlorine concentration of 200 ppm and a pH of 5.5.
  • Patent Document 2 discloses a method of spraying water and cleaning with a brush, followed by sterilization using strongly acidic electrolyzed water and strongly alkaline electrolyzed water.
  • an object of the present invention is to provide a method for sterilizing the surface of the avian egg which can efficiently sterilize the surface of the avian egg in a short time and has few problems of drainage standard.
  • the present inventors can efficiently disinfect the surface of the avian egg in a short time by using a peracetic acid solution to sterilize the surface of the avian egg such as a chicken egg, and also the problem of drainage standard It found out that there were few and completed this invention. That is, the present invention provides a method for sterilizing the surface of avian eggs having the following features.
  • a method for sterilizing the surface of avian eggs which comprises bringing the surface of the avian egg into contact with an aqueous solution of peracetic acid.
  • the method according to [1] wherein the concentration of the peracetic acid is 80 to 1000 ppm.
  • Peracetic acid has a strong oxidizing action, and its oxidizing power is said to be 10,000 times that of hydrogen peroxide, and the oxidizing power produces a strong bactericidal action.
  • This bactericidal activity has already been recognized, and is generally used for surface sterilization of foods such as vegetables, fruits, fish and meat in the US etc., and is approved as a food additive in Japan.
  • peracetic acid is used to sterilize foods such as vegetables, fruits, fish and meat, it has not been used so far to sterilize the surface of avian eggs, and it is unclear whether it is applicable. .
  • a method for sterilizing the surface of avian eggs which comprises bringing the surface of the avian egg into contact with an aqueous solution of peracetic acid.
  • the problem of drainage standard is also small, and the surface of avian eggs can be efficiently disinfected in a short time.
  • the method for sterilizing the surface of avian eggs of the present invention is characterized in that the surface of avian eggs and an aqueous peracetic acid solution are brought into contact with each other.
  • the avian eggs may be infertile or fertile. Fertile eggs can be used for production of raw birds such as uncooked chickens and vaccine production.
  • the concentration of peracetic acid used in the method for sterilizing the surface of avian eggs of the present invention is not particularly limited as long as it can sterilize the surface of avian eggs, but is preferably 50 to 1000 ppm, more preferably 80 to 500 ppm, still more preferably 80. It can be up to 200 ppm. The higher the concentration of peracetic acid, the shorter it is possible to sterilize the surface of the avian egg.
  • the peracetic acid solution used in the method for sterilizing the surface of avian eggs of the present invention is produced by an equilibrium reaction caused by mixing acetic acid and hydrogen peroxide, or irreversible caused by mixing triacetin and hydrogen peroxide.
  • acetic acid glacial acetic acid is preferably used because it is excellent in reactivity and can improve the bactericidal effect of the present invention.
  • the peracetic acid solution may optionally contain other components such as 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP).
  • HEDP has the effect of stabilizing peracetic acid in peracetic acid solution.
  • the concentration of HEDP in the peracetic acid solution is preferably less than 1%, more preferably 0.6 to 0.9%.
  • the contact between the egg surface and the peracetic acid solution is not particularly limited as long as the bird surface and the peracetic acid solution can be contacted, for example, a method of immersing the bird egg in a peracetic acid solution, spraying the peracetic acid solution onto the bird egg surface And a non-woven fabric containing a peracetic acid solution.
  • the avian egg when the avian egg is an infertile egg, a method of immersing the avian egg in a peracetic acid solution or a method of spraying a peracetic acid solution on the surface of avian egg is preferable, and when the avian egg is a fertilized egg, It is preferred to use a non-woven fabric containing a peracetic acid solution to boil the surface of the avian egg. This is because when the bird's egg is immersed in the peracetic acid solution or the peracetic acid solution is sprayed on the surface of the bird egg for a long time, the surface of the bird's egg may be covered with the peracetic acid solution. It is because it may inhibit the breathing that is performed through the hole and in some cases, the fertile egg may die.
  • FIG. 1 shows an example of a peracetic acid solution spraying apparatus for spraying a peracetic acid solution on the surface of avian eggs.
  • a peracetic acid solution spraying apparatus for spraying a peracetic acid solution on the surface of avian eggs.
  • the peracetic acid solution spraying apparatus 10 after the peracetic acid solution is sprayed from the upper spray nozzle 1 while rotating the bird eggs 4 on the belt conveyor 3, Let it pass.
  • a felt containing a peracetic acid solution may be used.
  • the peracetic acid solution spray device 10 the contact time between the surface of the avian egg and the peracetic acid solution can be extended, and the surface of the avian egg can be efficiently and automatically continuously disinfected. .
  • the surface of the avian egg can be disinfected by including the peracetic acid solution in the non-woven fabric and carefully squeezing in a sufficiently squeezed state.
  • the temperature at which the egg surface is brought into contact with the peracetic acid solution varies depending on the climate in the case of infertile eggs, but 10 to 40 ° C. is preferred, and according to the general hygiene standard, it is 30 ° C. or more, A temperature 5 ° C. or more higher than the temperature is more preferable. In the case of fertile eggs, 34 to 37 ° C. is preferable, and a temperature about 5 ° C. higher than the temperature of the surface of the avian egg before washing is more preferable.
  • the pH at the time of contacting the surface of the egg with the peracetic acid solution is not particularly limited, but is preferably pH 2 to 6, and more preferably pH 2 to 4.
  • the time for which the surface of the avian egg and the peracetic acid solution are in contact means the time for which the surface of the avian egg is wet with the peracetic acid solution, and the time is not particularly limited, but the case where the avian egg is immersed in the peracetic acid solution
  • a peracetic acid solution onto the surface of avian eggs preferably a nonwoven fabric containing peracetic acid solution, for 5 seconds to 20 minutes, more preferably for 1 minute to 10 minutes, and particularly preferably for 1 minute to 5 minutes
  • it is preferably 5 seconds to 5 minutes, more preferably 30 seconds to 3 minutes, and particularly preferably 1 minute to 3 minutes.
  • the higher the concentration of the peracetic acid solution the shorter the contact time between the surface of the avian egg and the peracetic acid solution can be.
  • the surface of the egg After contacting the surface of the egg with the peracetic acid solution, the surface of the egg is dried appropriately according to the general hygiene standards. Drying includes natural drying, drying with a clean blower, and the like. Peracetic acid is removed from the avian egg surface by drying of the avian egg surface.
  • the waste solution of the peracetic acid solution used to sterilize the egg surface can maintain the effect of peracetic acid for a long time, as described above, particularly in the case of the peracetic acid solution produced by the equilibrium reaction. It also contributes to the sterilization of the floor in the plant and the drainage ditch.
  • the problem on the sewage purification microbe in the treatment tank and the problem of drainage standard are also small.
  • a peracetic acid neutralizer such as sodium bisulfite preferable.
  • avian eggs there are no particular limitations on the avian eggs, but examples include chicken eggs, quail eggs, duck eggs and the like.
  • the contact time of the egg surface with the peracetic acid solution can be changed as appropriate depending on the size of the egg.
  • bacteria adhering to the surface of the avian egg and bacteria hiding inside the cuticular layer present on the surface of the avian egg can be disinfected and removed.
  • the cuticular layer on the surface of the egg can be removed by water flow or by washing with a brush, but the method of the present invention can improve the removal rate of bacteria.
  • Example 1 The contamination status of 100 non-washed chicken eggs was examined by the total number of bacteria, and the distribution was as shown in Table 1.
  • the minimum value (log) was 0.57 / ml
  • the maximum value (log) was 7.42 / ml
  • the graph of Table 1 is shown in FIG.
  • Table 2 The type and number of bacteria detected from the surface of the egg as shown in Table 1 are shown in Table 2. It can be seen from Table 2 that on the surface of the laid eggs, 3 to 5 bacteria are attached on a log scale.
  • the peracetic acid solution was produced by mixing glacial acetic acid and hydrogen peroxide.
  • Example 2 Instead of immersing the egg surface of Example 1 in the peracetic acid solution, 500 ppm peracetic acid solution was sprayed from above onto the moving eggs on the conveyor belt.
  • the moving speed of the egg in this case was 30 cm / min, and the spray distance was 1 m.
  • the peracetic acid solution is being sprayed for 3 minutes or more. By the spraying of the peracetic acid solution, the number of bacteria detected on the surface of the egg after spraying became zero.
  • Example 3 After randomly selecting 5 out of 100 non-washed chicken eggs of Example 1 and impregnating the non-woven fabric with a peracetic acid solution at a concentration of 350 ppm, one treatment for wiping the surface of the eggs under sufficient squeezing is carried out. It went for 3 minutes per egg. Thereafter, as a result of counting the number of bacteria on the surface of the egg, the number of detected bacteria was zero.
  • a method for sterilizing the surface of avian eggs which comprises contacting the surface of the avian egg with a peracetic acid solution.
  • a peracetic acid solution In Japan, there are many cases where chicken eggs are eaten raw. Therefore, it is necessary to completely eradicate bird eggs. Because the eggs are produced from the general excretion mouth, they are born contaminated with intestinal bacteria. Some of these bacteria cause poisoning and are dangerous.
  • the method for sterilizing the surface of avian eggs of the present invention can efficiently sterilize the surface of avian eggs in a short time. In addition, the method for sterilizing the surface of avian eggs of the present invention is also less prone to drainage problems.

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Abstract

Many bacteria are attached to the surface of a bird egg laid by a bird. Therefore, there is a demand for a method which is for sterilizing the surface of a bird egg, and which is capable of efficiently sterilizing the surface of a bird egg in a short period of time and has little problem in terms of drainage criteria. The present invention provides a method for sterilizing the surface of a bird egg, the method being characterized by bringing the surface of the bird egg into contact with a peracetic acid solution. The concentration of the peracetic acid solution is preferably 80 to 1000 ppm, and it is preferable to bring the surface of the bird egg into contact with the peracetic acid solution at 10-40°C for 5 seconds to 20 minutes.

Description

鳥卵表面の殺菌方法Method of sterilizing egg surface
　本発明は、鳥卵表面の殺菌方法に関する。
　本願は、２０１７年９月２１日に、日本に出願された特願２０１７－１９６４０６号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to a method of sterilizing the surface of avian eggs.
Priority is claimed on Japanese Patent Application No. 2017-196406, filed September 21, 2017, the content of which is incorporated herein by reference.
　鶏の産卵は成熟卵胞の形成後に行なわれる排卵に始まり、放卵は漏斗部、膨大部、狭部、卵殻腺部、および卵殻膣部を経て総排泄口から行なわれる。このとき放卵を円滑にするために卵殻膣部において糖を含むタンパク質の粘液が分泌され、表面に付着することによって表面を滑らかにする。この放卵過程で総排泄口を通ることによって、腸内細菌と接触することになり、卵殻表面のタンパク質で構成されるクチクラ層に細菌が付着することになる。 Egg laying starts with ovulation performed after formation of mature follicles, and oviposition is performed from the total excretory opening through the funnel, the ampulla, the narrow part, the eggshell gland and the eggshell vagina. At this time, a mucus of a protein containing sugar is secreted in the egg-shell vaginal area in order to facilitate the ovulation, and the surface is made smooth by adhering to the surface. By passing through the total excretory port in this ovulation process, it comes into contact with intestinal bacteria, and the bacteria adhere to the cuticular layer composed of proteins on the surface of the eggshell.
　このように肉眼では清潔であっても卵殻の表面は腸内細菌との接触の機会があることによって雑菌が付着している。大腸菌やブドウ球菌も問題であるが、特に問題視されているのはカンピロバクター、およびサルモネラ菌であり、これらの除去が課題である。 Thus, even though it is clean with the naked eye, the surface of the eggshell is attached with bacteria due to the opportunity for contact with intestinal bacteria. Although E. coli and staphylococcal bacteria are also problems, the particularly problematic ones are Campylobacter and Salmonella bacteria, and their removal is a problem.
　これまでに行なわれている洗浄殺菌方法として、次亜塩素酸ナトリウムを用いる方法、オゾンを用いる方法、電解質を用いる方法等が知られている。
　特許文献１には、卵を酢酸で洗浄した後に塩素濃度２００ｐｐｍ、ｐＨ５．５、の弱酸性電解水で洗浄する装置が開示されている。また、特許文献２には、水を噴射しブラシで洗浄後、強酸性電解水および強アルカリ電解水を使用して殺菌する方法が開示されている。 As methods for cleaning and disinfecting which have been performed up to now, methods using sodium hypochlorite, methods using ozone, methods using an electrolyte, and the like are known.
Patent Document 1 discloses an apparatus for washing an egg with acetic acid and then washing with weakly acidic electrolyzed water having a chlorine concentration of 200 ppm and a pH of 5.5. Patent Document 2 discloses a method of spraying water and cleaning with a brush, followed by sterilization using strongly acidic electrolyzed water and strongly alkaline electrolyzed water.
特開２００５－０２７６０９号公報JP, 2005-027609, A 特開２００３－０２３９０７号公報Unexamined-Japanese-Patent No. 2003-023907
　次亜塩素酸ナトリウムを使用する殺菌方法は、次亜塩素酸ナトリウムは残存性があることから、水洗工程が必要になるとともに人体への影響の問題、および排水基準の問題がある。また、オゾンを使用する殺菌方法も、人体への影響、腐食性の問題がある。電解水を用いる殺菌方法についても、電解質も塩素を用いていることから、排水基準の問題が残る。 In the sterilization method using sodium hypochlorite, since sodium hypochlorite is residual, a washing process is required, and there are problems with human effects and drainage standards. Moreover, the sterilization method using ozone also has the influence on the human body and the problem of corrosion. Also in the sterilization method using electrolyzed water, since the electrolyte also uses chlorine, the problem of drainage standard remains.
　また、鶏卵の増産のために、鶏を増やす必要がある。その場合には有精卵が必要になり、その鶏卵表面の殺菌が必要である。とくにサルモネラ菌の汚染が問題であり、汚染されたままに孵卵させることによって、生まれつき汚染状態の親鳥が生じることになる。しかし、通常の浸漬による洗浄方法を用いれば、鶏卵表面を水膜で覆ってしまうことになり、表面の微細な穴を通しておこなわれる呼吸作用を阻害してしまい、場合によっては鶏卵が死んでしまう事態を起こしかねない。このような場合には、不織布を用いこれに殺菌剤を染みこませた後に絞ってこれによって表面を拭き取る方法がとられている。またこの有精卵はワクチン製造にも使われることから、この作業は非常に重要な工程であるが、殺菌剤によっては、殺菌が不十分であったり、時間を要したりする場合がある。 In addition, it is necessary to increase chickens in order to increase production of chicken eggs. In that case, a fertilized egg is required, and the surface of the egg needs to be sterilized. In particular, the contamination of salmonella bacteria is a problem, and incubation as it is contaminated results in the generation of a naturally contaminated parent bird. However, when using the conventional washing method by immersion, the surface of the egg will be covered with a water film, which will inhibit the respiratory action carried out through the minute holes in the surface, and in some cases, the egg will die. Can cause In such a case, a non-woven fabric is impregnated with a germicide and then squeezed to wipe off the surface. In addition, this work is a very important step because this semen is also used for vaccine production, but depending on the bactericide, sterilization may be insufficient or time-consuming.
　そこで、本発明は、鳥卵表面を、短時間で、効率的に殺菌でき、且つ、排水基準の問題も少ない、鳥卵表面の殺菌方法を提供することを目的とする。 Then, an object of the present invention is to provide a method for sterilizing the surface of the avian egg which can efficiently sterilize the surface of the avian egg in a short time and has few problems of drainage standard.
　本発明者らは、鶏卵等の鳥卵表面を殺菌するために、過酢酸溶液を用いることにより、鳥卵表面を、短時間で、効率的に殺菌することでき、且つ、排水基準の問題も少ないことを見出し、本発明を完成させた。
　すなわち、本発明は、下記の特徴を有する鳥卵表面の殺菌方法を提供するものである。
［１］鳥卵表面と過酢酸水溶液とを接触させることを特徴とする鳥卵表面の殺菌方法。
［２］前記過酢酸の濃度が８０～１０００ｐｐｍである［１］に記載の方法。
［３］前記鳥卵表面と過酢酸溶液とを、１０～４０℃で５秒～２０分間接触させる［１］または［２］に記載の方法。
［４］前記過酢酸溶液が、氷酢酸と過酸化水素とからなる平衡状態の過酢酸溶液である［１］～［３］のいずれか一項に記載の方法。
［５］前記鳥卵表面と過酢酸溶液との接触が、鳥卵表面へ過酢酸溶液を噴霧することによる［１］～［４］のいずれか一項に記載の方法。
［６］前記鳥卵表面と過酢酸溶液との接触が、過酢酸溶液を含む不織布で鳥卵表面を撫でることによる［１］～［５］のいずれか一項に記載の方法。
［７］前記鳥卵が、無精卵又は有精卵である［１］～［６］のいずれか一項に記載の方法。
［８］前記鳥卵が、鶏卵、ウズラの卵、又はアヒルの卵である［１］～［７］のいずれか一項に記載の方法。 The present inventors can efficiently disinfect the surface of the avian egg in a short time by using a peracetic acid solution to sterilize the surface of the avian egg such as a chicken egg, and also the problem of drainage standard It found out that there were few and completed this invention.
That is, the present invention provides a method for sterilizing the surface of avian eggs having the following features.
[1] A method for sterilizing the surface of avian eggs, which comprises bringing the surface of the avian egg into contact with an aqueous solution of peracetic acid.
[2] The method according to [1], wherein the concentration of the peracetic acid is 80 to 1000 ppm.
[3] The method according to [1] or [2], wherein the surface of the avian egg and the peracetic acid solution are brought into contact at 10 to 40 ° C. for 5 seconds to 20 minutes.
[4] The method according to any one of [1] to [3], wherein the peracetic acid solution is an equilibrated peracetic acid solution consisting of glacial acetic acid and hydrogen peroxide.
[5] The method according to any one of [1] to [4], wherein the contact between the surface of the avian egg and the peracetic acid solution is by spraying the surface of the avian egg with the peracetic acid solution.
[6] The method according to any one of [1] to [5], wherein the contact between the surface of the avian egg and the peracetic acid solution is by rubbing the surface of the avian egg with a non-woven fabric containing a peracetic acid solution.
[7] The method according to any one of [1] to [6], wherein the avian egg is an infertile egg or a fertile egg.
[8] The method according to any one of [1] to [7], wherein the avian egg is a chicken egg, a quail egg, or a duck egg.
　過酢酸は、強い酸化作用を有しており、その酸化力は過酸化水素の１万倍と言われており、その酸化力によって強力な殺菌作用を生み出している。この殺菌力はすでに認識されており、米国などでは野菜、果物、魚、肉などの食品の表面殺菌に一般的に使用され、日本でも食品添加剤として認可されている。過酢酸による殺菌は、塩素は使用していないことと、揮散する成分とからなっていることから、一定程度乾燥放置すれば良いので残留性が無く、使用後の水洗の必要がないので、水の使用量を著しく低減化する。また、適正に希釈された過酢酸溶液の使用後の廃溶液は、流水洗浄方法に伴い、一定量ずつ排出されるが、排出された廃溶液は、平衡反応で製造された過酢酸溶液の場合、失活し難く工場内の床面、施設された排水溝等の殺菌にも寄与する。最終的には他の用途で排出される廃水と混合中和されることにより、処理槽内の汚水浄化微生物への影響や排水基準の問題も少ない。 Peracetic acid has a strong oxidizing action, and its oxidizing power is said to be 10,000 times that of hydrogen peroxide, and the oxidizing power produces a strong bactericidal action. This bactericidal activity has already been recognized, and is generally used for surface sterilization of foods such as vegetables, fruits, fish and meat in the US etc., and is approved as a food additive in Japan. Since sterilization with peracetic acid consists of not using chlorine and the components to be volatilized, there is no persistence since it should be left to a certain degree of drying and there is no need for washing after use, so water Significantly reduce the amount of Also, the waste solution after use of the properly diluted peracetic acid solution is discharged by a constant amount with the running water washing method, but the discharged waste solution is the case of the peracetic acid solution produced by the equilibrium reaction It is hard to be inactivated and contributes to the sterilization of the floor in the factory, the drainage ditch and the like. Ultimately, by mixing and neutralizing with the wastewater discharged in other applications, the problem on the sewage purification microbe in the treatment tank and the problem of drainage standard are also small.
　しかしながら、過酢酸は、野菜、果物、魚、肉などの食品の表面殺菌に使用されているが、これまで鳥卵表面の殺菌には使用されていないし、適用可能であるかについても不明である。 However, although peracetic acid is used to sterilize foods such as vegetables, fruits, fish and meat, it has not been used so far to sterilize the surface of avian eggs, and it is unclear whether it is applicable. .
　本発明によれば、鳥卵表面と過酢酸水溶液とを接触させることを特徴とする鳥卵表面の殺菌方法が提供される。本発明の鳥卵表面の殺菌方法により、排水基準の問題も少なく、鳥卵表面を短時間で、効率的に殺菌することができる。 According to the present invention, there is provided a method for sterilizing the surface of avian eggs, which comprises bringing the surface of the avian egg into contact with an aqueous solution of peracetic acid. According to the method of sterilizing the surface of avian eggs of the present invention, the problem of drainage standard is also small, and the surface of avian eggs can be efficiently disinfected in a short time.
鳥卵表面に過酢酸溶液を噴霧する装置の一例を示した図である。It is the figure which showed an example of the apparatus which sprays a peracetic acid solution on the surface of an egg. 産卵直後の卵殻表面に存在する細菌数の検出結果を示した図である。縦軸は、卵の個数を示し、横軸は、細菌の数のｌｏｇ値を示す。It is the figure which showed the detection result of the number of bacteria which exist in the eggshell surface immediately after egg laying. The vertical axis shows the number of eggs, and the horizontal axis shows the log value of the number of bacteria.
　本発明の鳥卵表面の殺菌方法は、鳥卵表面と過酢酸水溶液とを接触させることを特徴とする。鳥卵は、無精卵であっても有精卵であってもよい。有精卵は、素鶏等の素鳥の生産、ワクチン製造等に用いることができる。 The method for sterilizing the surface of avian eggs of the present invention is characterized in that the surface of avian eggs and an aqueous peracetic acid solution are brought into contact with each other. The avian eggs may be infertile or fertile. Fertile eggs can be used for production of raw birds such as uncooked chickens and vaccine production.
　本発明の鳥卵表面の殺菌方法に用いられる過酢酸の濃度は、鳥卵表面を殺菌することができれば特に制限はないが、好ましくは５０～１０００ｐｐｍ、より好ましくは８０～５００ｐｐｍ、さらに好ましくは８０～２００ｐｐｍとすることができる。過酢酸の濃度が高い程、短時間で鳥卵表面の殺菌を行うことができる。 The concentration of peracetic acid used in the method for sterilizing the surface of avian eggs of the present invention is not particularly limited as long as it can sterilize the surface of avian eggs, but is preferably 50 to 1000 ppm, more preferably 80 to 500 ppm, still more preferably 80. It can be up to 200 ppm. The higher the concentration of peracetic acid, the shorter it is possible to sterilize the surface of the avian egg.
　本発明の鳥卵表面の殺菌方法に用いられる過酢酸溶液は、酢酸と過酸化水素とを混合することによって起こる平衡反応で製造するか、又はトリアセチンと過酸化水素を混合することによって起こる非可逆的な反応で製造することができる。
　酢酸と過酸化水素とを混合させることにより製造される過酢酸は、平衡反応によっているため、過酢酸が本発明の鳥卵の殺菌方法に使用されても、平衡反応により、過酸化水素と酢酸が反応し、過酢酸の量が維持されるため、本発明の鳥卵の殺菌方法における過酢酸の効果を長期に維持することができる。酢酸としては、氷酢酸が、反応性に優れ、本発明の殺菌効果を向上させることができるため、好ましく用いられる。 The peracetic acid solution used in the method for sterilizing the surface of avian eggs of the present invention is produced by an equilibrium reaction caused by mixing acetic acid and hydrogen peroxide, or irreversible caused by mixing triacetin and hydrogen peroxide. Can be produced by
Since peracetic acid produced by mixing acetic acid and hydrogen peroxide is in equilibrium reaction, even if peracetic acid is used in the method of sterilizing avian eggs of the present invention, hydrogen peroxide and acetic acid are reacted by equilibrium reaction. React and maintain the amount of peracetic acid, so that the effect of peracetic acid in the method for sterilizing avian eggs of the present invention can be maintained for a long time. As acetic acid, glacial acetic acid is preferably used because it is excellent in reactivity and can improve the bactericidal effect of the present invention.
　過酢酸溶液には、必要に応じ、１－ヒドロキシエチリデン－１，１－ジホスホン酸（ＨＥＤＰ）等の他の成分を含んでいてもよい。ＨＥＤＰは、過酢酸溶液中の過酢酸を安定させる効果を有する。過酢酸溶液中のＨＥＤＰの濃度は、１％未満が好ましく、０．６～０．９％がより好ましい。 The peracetic acid solution may optionally contain other components such as 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP). HEDP has the effect of stabilizing peracetic acid in peracetic acid solution. The concentration of HEDP in the peracetic acid solution is preferably less than 1%, more preferably 0.6 to 0.9%.
　鳥卵表面と過酢酸溶液との接触は、鳥卵表面と過酢酸溶液が接触できれば特に制限はないが、例えば、鳥卵を過酢酸溶液に浸漬する方法、鳥卵表面へ過酢酸溶液を噴霧する方法、過酢酸溶液を含む不織布で鳥卵表面を撫でる方法等が挙げられる。特に、鳥卵が無精卵である場合は、鳥卵を過酢酸溶液に浸漬する方法、又は、鳥卵表面への過酢酸溶液の噴霧する方法が好ましく、鳥卵が有精卵である場合は、過酢酸溶液を含む不織布で鳥卵表面を撫でる方法が好ましい。これは、鳥卵を過酢酸溶液に浸漬したり、鳥卵表面へ過酢酸溶液を長時間噴霧したりすると、鳥卵表面を過酢酸溶液で覆ってしまう場合があり、鳥卵表面の微細な穴を通して行われる呼吸を阻害してしまい、場合によっては有精卵が死んでしまう恐れがあるからである。 The contact between the egg surface and the peracetic acid solution is not particularly limited as long as the bird surface and the peracetic acid solution can be contacted, for example, a method of immersing the bird egg in a peracetic acid solution, spraying the peracetic acid solution onto the bird egg surface And a non-woven fabric containing a peracetic acid solution. In particular, when the avian egg is an infertile egg, a method of immersing the avian egg in a peracetic acid solution or a method of spraying a peracetic acid solution on the surface of avian egg is preferable, and when the avian egg is a fertilized egg, It is preferred to use a non-woven fabric containing a peracetic acid solution to boil the surface of the avian egg. This is because when the bird's egg is immersed in the peracetic acid solution or the peracetic acid solution is sprayed on the surface of the bird egg for a long time, the surface of the bird's egg may be covered with the peracetic acid solution. It is because it may inhibit the breathing that is performed through the hole and in some cases, the fertile egg may die.
　図１に、鳥卵表面に過酢酸溶液を噴霧する、過酢酸溶液噴霧装置の一例を示す。図１に示したように、過酢酸溶液噴霧装置１０においては、鳥卵４をベルトコンベア３上で回転させながら、上部の噴霧ノズル１より過酢酸溶液を噴霧した後に、回転ブラシ２の下を通過させる。回転ブラシ２の代わりに、過酢酸溶液を含んだフェルト等を用いてもよい。
　前記過酢酸溶液噴霧装置１０を用いることによって、鳥卵表面と過酢酸溶液との接触時間を長くすることができ、効率的、且つ自動的に連続して鳥卵表面の殺菌を行うことができる。 FIG. 1 shows an example of a peracetic acid solution spraying apparatus for spraying a peracetic acid solution on the surface of avian eggs. As shown in FIG. 1, in the peracetic acid solution spraying apparatus 10, after the peracetic acid solution is sprayed from the upper spray nozzle 1 while rotating the bird eggs 4 on the belt conveyor 3, Let it pass. Instead of the rotating brush 2, a felt containing a peracetic acid solution may be used.
By using the peracetic acid solution spray device 10, the contact time between the surface of the avian egg and the peracetic acid solution can be extended, and the surface of the avian egg can be efficiently and automatically continuously disinfected. .
　過酢酸溶液を含む不織布で鳥卵表面を撫でる方法の場合は、不織布に過酢酸溶液を含ませ、十分に絞った状態で丁寧にふくことによって、鳥卵表面の殺菌を行うことができる。なお、前記不織布の代わりに、フェルト等を用いてもよい。 In the case of a method of rubbing the surface of the avian egg with a non-woven fabric containing a peracetic acid solution, the surface of the avian egg can be disinfected by including the peracetic acid solution in the non-woven fabric and carefully squeezing in a sufficiently squeezed state. In addition, you may use a felt etc. instead of the said nonwoven fabric.
　鳥卵表面と過酢酸溶液とを接触させる際の温度は、無精卵の場合は、気候により異なるが、１０～４０℃が好ましく、一般衛生基準に従い、３０℃以上で、洗浄前の鳥卵表面の温度より５℃以上高い温度がより好ましい。有精卵の場合は、３４～３７℃が好ましく、洗浄前の鳥卵表面の温度より５℃程度高い温度がより好ましい。 The temperature at which the egg surface is brought into contact with the peracetic acid solution varies depending on the climate in the case of infertile eggs, but 10 to 40 ° C. is preferred, and according to the general hygiene standard, it is 30 ° C. or more, A temperature 5 ° C. or more higher than the temperature is more preferable. In the case of fertile eggs, 34 to 37 ° C. is preferable, and a temperature about 5 ° C. higher than the temperature of the surface of the avian egg before washing is more preferable.
　鳥卵表面と過酢酸溶液を接触させる際のｐＨは、特に制限はないが、ｐＨ２～６が好ましく、ｐＨ２～４がより好ましい。 The pH at the time of contacting the surface of the egg with the peracetic acid solution is not particularly limited, but is preferably pH 2 to 6, and more preferably pH 2 to 4.
　鳥卵表面と過酢酸溶液とを接触させる時間は、鳥卵の表面が過酢酸溶液で濡れている時間を意味し、その時間は特に制限はないが、鳥卵を過酢酸溶液に浸漬する場合、及び過酢酸溶液を鳥卵表面に噴霧する場合は、好ましくは、５秒～２０分間、より好ましくは１分～１０分間、特に好ましくは１分～５分間であり、過酢酸溶液を含む不織布で鳥卵表面を撫でる場合は、好ましくは５秒～５分間、より好ましくは３０秒～３分間、特に好ましくは、１分～３分間である。過酢酸溶液の濃度が高い程、鳥卵表面と過酢酸溶液との接触時間は短くすることができる。 The time for which the surface of the avian egg and the peracetic acid solution are in contact means the time for which the surface of the avian egg is wet with the peracetic acid solution, and the time is not particularly limited, but the case where the avian egg is immersed in the peracetic acid solution When spraying a peracetic acid solution onto the surface of avian eggs, preferably a nonwoven fabric containing peracetic acid solution, for 5 seconds to 20 minutes, more preferably for 1 minute to 10 minutes, and particularly preferably for 1 minute to 5 minutes In the case where the surface of the avian egg is browsed, it is preferably 5 seconds to 5 minutes, more preferably 30 seconds to 3 minutes, and particularly preferably 1 minute to 3 minutes. The higher the concentration of the peracetic acid solution, the shorter the contact time between the surface of the avian egg and the peracetic acid solution can be.
　鳥卵表面と過酢酸溶液とを接触させた後は、鳥卵表面を一般衛生基準に従い、適切に乾燥させる。乾燥は、自然乾燥、清潔なブロアーによる乾燥等を挙げることができる。過酢酸は、鳥卵表面の乾燥により鳥卵表面から除去される。 After contacting the surface of the egg with the peracetic acid solution, the surface of the egg is dried appropriately according to the general hygiene standards. Drying includes natural drying, drying with a clean blower, and the like. Peracetic acid is removed from the avian egg surface by drying of the avian egg surface.
　鳥卵表面の殺菌に使用された過酢酸溶液の廃溶液は、平衡反応で製造された過酢酸溶液の場合は特に、上記に記載した通り、過酢酸の効果を長期に維持することができるため、工場内の床面、施設された排水溝等の殺菌にも寄与する。最終的には他の用途で排出される廃水と混合中和されることにより、処理槽内の汚水浄化微生物への影響や排水基準の問題も少ない。
　ただし、定期点検時等、多量の高濃度の過酢酸溶液が排出される場合は、二亜硫酸ナトリウム等の過酢酸中和剤を用いて、排水処理槽内内の汚水浄化微生物を保護することが好ましい。 The waste solution of the peracetic acid solution used to sterilize the egg surface can maintain the effect of peracetic acid for a long time, as described above, particularly in the case of the peracetic acid solution produced by the equilibrium reaction. It also contributes to the sterilization of the floor in the plant and the drainage ditch. Ultimately, by mixing and neutralizing with the wastewater discharged in other applications, the problem on the sewage purification microbe in the treatment tank and the problem of drainage standard are also small.
However, if a large amount of highly concentrated peracetic acid solution is discharged, such as at regular inspections, protect the sewage purification microbes in the wastewater treatment tank using a peracetic acid neutralizer such as sodium bisulfite preferable.
　鳥卵としては、特に制限はないが、鶏卵、ウズラの卵、アヒルの卵等が挙げられる。鳥卵表面と過酢酸溶液との接触時間は、鳥卵の大きさによって、適宜変更することができる。 There are no particular limitations on the avian eggs, but examples include chicken eggs, quail eggs, duck eggs and the like. The contact time of the egg surface with the peracetic acid solution can be changed as appropriate depending on the size of the egg.
　本発明の鳥卵表面の殺菌方法により、鳥卵表面に付着している細菌、及び鳥卵表面に存在するクチクラ層内部に潜り込んでいる細菌を殺菌除去することができる。鳥卵表面のクチクラ層は、水流により、あるいはブラシで洗浄することによって除去可能であるが、本発明の方法により細菌の除去率を向上させることができる。 According to the method of sterilizing the surface of the avian egg of the present invention, bacteria adhering to the surface of the avian egg and bacteria hiding inside the cuticular layer present on the surface of the avian egg can be disinfected and removed. The cuticular layer on the surface of the egg can be removed by water flow or by washing with a brush, but the method of the present invention can improve the removal rate of bacteria.
　以下、具体的実施例により、本発明についてより詳細に説明する。ただし、本発明は、以下に示す実施例に、何ら限定されるものではない。 Hereinafter, the present invention will be described in more detail by way of specific examples. However, the present invention is not limited at all to the examples shown below.
　［実施例１］
　無洗鶏卵１００個についてその汚染状況を総菌数で調べたところ、その分布は表１のようになった。最小値（ｌｏｇ）は０．５７／ｍｌ、最大値（ｌｏｇ）は７．４２／ｍｌであり、ｌｏｇ値で５付近に最大値があることが分かった。表１のグラフを図２に示す。 Example 1
The contamination status of 100 non-washed chicken eggs was examined by the total number of bacteria, and the distribution was as shown in Table 1. The minimum value (log) was 0.57 / ml, the maximum value (log) was 7.42 / ml, and it was found that there is a maximum value around 5 in the log value. The graph of Table 1 is shown in FIG.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示した鶏卵表面から検出された菌の種類および菌数を表２に示す。表２から産み落とされた鶏卵表面にはｌｏｇスケールで３～５の菌が付着していることが分かる。 The type and number of bacteria detected from the surface of the egg as shown in Table 1 are shown in Table 2. It can be seen from Table 2 that on the surface of the laid eggs, 3 to 5 bacteria are attached on a log scale.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　次に過酢酸溶液の鳥卵表面の殺菌効果の検証を行なった。事前に菌数を測定した鶏卵各５個をそれぞれ濃度の異なる過酢酸溶液に浸漬し、浸漬後の菌数の測定を行なった。その結果を表３に示す。なお、過酢酸溶液は、氷酢酸と過酸化水素を混合することにより製造した。 Next, the bactericidal effect of the peracetic acid surface of the avian egg was verified. Five chicken eggs whose number of bacteria were previously measured were immersed in peracetic acid solutions of different concentrations, and the number of bacteria after immersion was measured. The results are shown in Table 3. The peracetic acid solution was produced by mixing glacial acetic acid and hydrogen peroxide.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　表３に示したように、鶏卵を過酢酸溶液に浸漬することにより、鶏卵表面の存在する細菌を殺菌除去することができた。過酢酸溶液による鶏卵表面の殺菌効果は、過酢酸濃度が３５０ｐｐｍ以上の場合にはわずか１分間の浸漬で十分な効果が得られた。 As shown in Table 3, by immersing the chicken egg in a peracetic acid solution, bacteria present on the surface of the egg could be disinfected and removed. The bactericidal effect of the peracetic acid surface by the peracetic acid solution was sufficiently obtained by immersion for only 1 minute when the peracetic acid concentration was 350 ppm or more.
　［実施例２］
　実施例１の鶏卵表面を過酢酸溶液に浸漬する代わりに、５００ｐｐｍの過酢酸溶液を、ベルトコンベア上を移動する鶏卵に上部から噴霧した。この場合の鶏卵の移動速度は分速３０ｃｍで、噴霧距離は１ｍとした。この場合、３分間以上の間、過酢酸溶液が噴霧されていることになる。この過酢酸溶液の噴霧によって、噴霧後の鶏卵表面の細菌の検出数は０になっていた。 Example 2
Instead of immersing the egg surface of Example 1 in the peracetic acid solution, 500 ppm peracetic acid solution was sprayed from above onto the moving eggs on the conveyor belt. The moving speed of the egg in this case was 30 cm / min, and the spray distance was 1 m. In this case, the peracetic acid solution is being sprayed for 3 minutes or more. By the spraying of the peracetic acid solution, the number of bacteria detected on the surface of the egg after spraying became zero.
　［実施例３］
　実施例１の無洗鶏卵１００個から無作為に５個を選択し、不織布に３５０ｐｐｍの濃度の過酢酸溶液を染みこませた後、十分に絞った状態で鶏卵の表面を拭く処理を一個の鶏卵当たり、３分間行った。その後、鶏卵表面上の細菌数を計測した結果、細菌の検出数は０になっていた。 [Example 3]
After randomly selecting 5 out of 100 non-washed chicken eggs of Example 1 and impregnating the non-woven fabric with a peracetic acid solution at a concentration of 350 ppm, one treatment for wiping the surface of the eggs under sufficient squeezing is carried out. It went for 3 minutes per egg. Thereafter, as a result of counting the number of bacteria on the surface of the egg, the number of detected bacteria was zero.
　本発明により、鳥卵表面と過酢酸溶液とを接触させることを特徴とする鳥卵表面の殺菌方法が提供される。日本においては鳥卵を生で食する場合が多い。従って鳥卵の除菌が完全に行なわれている必要がある。鳥卵は総排泄口から生み出されるので、腸内細菌に汚染されて生まれる。この細菌のなかには中毒をおこすものもあり、危険である。本発明の鳥卵表面の殺菌方法は、短時間に効率的に鳥卵表面の殺菌を行うことができる。また、本発明の鳥卵表面の殺菌方法は、排水基準の問題も少ない。 According to the present invention, there is provided a method for sterilizing the surface of avian eggs, which comprises contacting the surface of the avian egg with a peracetic acid solution. In Japan, there are many cases where chicken eggs are eaten raw. Therefore, it is necessary to completely eradicate bird eggs. Because the eggs are produced from the general excretion mouth, they are born contaminated with intestinal bacteria. Some of these bacteria cause poisoning and are dangerous. The method for sterilizing the surface of avian eggs of the present invention can efficiently sterilize the surface of avian eggs in a short time. In addition, the method for sterilizing the surface of avian eggs of the present invention is also less prone to drainage problems.
１・・・噴霧ノズル
２・・・回転ブラシ
３・・・ベルトコンベア
４・・・鳥卵
１０・・・過酢酸溶液噴霧装置 DESCRIPTION OF SYMBOLS 1 · · · Spraying nozzle 2 · · · Rotating brush 3 · · · Belt conveyor 4 · · · Eggs · · · Peracetic acid solution spraying device

Claims (8)

  1. 　鳥卵表面と過酢酸溶液とを接触させることを特徴とする鳥卵表面の殺菌方法。 A method for sterilizing the surface of avian eggs, which comprises contacting the surface of the avian egg with a peracetic acid solution.
  2. 　前記過酢酸の濃度が８０～１０００ｐｐｍである請求項１に記載の方法。 The method according to claim 1, wherein the concentration of peracetic acid is 80 to 1000 ppm.
  3. 　前記鳥卵表面と過酢酸溶液とを、１０～４０℃で５秒～２０分間接触させる請求項１または２に記載の方法。 The method according to claim 1 or 2, wherein the surface of the avian egg and the peracetic acid solution are brought into contact at 10 to 40 ° C for 5 seconds to 20 minutes.
  4. 　前記過酢酸溶液が、氷酢酸と過酸化水素とからなる平衡状態の過酢酸溶液である請求項１～３のいずれか一項に記載の方法。 The method according to any one of claims 1 to 3, wherein the peracetic acid solution is an equilibrated peracetic acid solution consisting of glacial acetic acid and hydrogen peroxide.
  5. 　前記鳥卵表面と過酢酸溶液との接触が、鳥卵表面へ過酢酸溶液を噴霧することによる請求項１～４のいずれか一項に記載の方法。 The method according to any one of claims 1 to 4, wherein the contact between the surface of the avian egg and the peracetic acid solution is by spraying the surface of the avian egg with the peracetic acid solution.
  6. 　前記鳥卵表面と過酢酸溶液との接触が、過酢酸溶液を含む不織布で鳥卵表面を撫でることによる請求項１～５のいずれか一項に記載の方法。 The method according to any one of claims 1 to 5, wherein the contact between the surface of the avian egg and the peracetic acid solution is by rubbing the surface of the avian egg with a non-woven fabric containing a solution of peracetic acid.
  7. 　前記鳥卵が、無精卵又は有精卵である請求項１～６のいずれか一項に記載の方法。 The method according to any one of claims 1 to 6, wherein the avian egg is an infertile egg or a fertilized egg.
  8. 　前記鳥卵が、鶏卵、ウズラの卵、又はアヒルの卵である請求項１～７のいずれか一項に記載の方法。 The method according to any one of claims 1 to 7, wherein the avian egg is a chicken egg, a quail egg, or a duck egg.
PCT/JP2018/034398 2017-09-21 2018-09-18 Method for sterilizing surface of bird egg WO2019059162A1 (en)

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JP2022117244A (en) * 2021-01-29 2022-08-10 三州食品株式会社 Seasoned boiled shell egg and production method thereof

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Publication number Priority date Publication date Assignee Title
JP2021040736A (en) * 2019-09-06 2021-03-18 セッツ株式会社 Method for disinfecting article used in meat processing
JP2022117244A (en) * 2021-01-29 2022-08-10 三州食品株式会社 Seasoned boiled shell egg and production method thereof

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