GB2457057A - Sterilisation of food contained within a sealed receptacle - Google Patents
Sterilisation of food contained within a sealed receptacle Download PDFInfo
- Publication number
- GB2457057A GB2457057A GB0801775A GB0801775A GB2457057A GB 2457057 A GB2457057 A GB 2457057A GB 0801775 A GB0801775 A GB 0801775A GB 0801775 A GB0801775 A GB 0801775A GB 2457057 A GB2457057 A GB 2457057A
- Authority
- GB
- United Kingdom
- Prior art keywords
- package
- food
- ultra
- radiation
- violet
- 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.)
- Pending
Links
- 235000013305 food Nutrition 0.000 title claims abstract description 65
- 238000004659 sterilization and disinfection Methods 0.000 title description 9
- 230000005855 radiation Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 31
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000004806 packaging method and process Methods 0.000 claims abstract description 17
- 230000001954 sterilising effect Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000001678 irradiating effect Effects 0.000 claims abstract description 8
- 229920002313 fluoropolymer Polymers 0.000 claims abstract description 7
- 239000004811 fluoropolymer Substances 0.000 claims abstract description 7
- 239000012466 permeate Substances 0.000 claims abstract description 3
- 239000004698 Polyethylene Substances 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000002211 ultraviolet spectrum Methods 0.000 claims description 2
- 244000005700 microbiome Species 0.000 abstract description 16
- 239000000047 product Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 235000021485 packed food Nutrition 0.000 description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 230000002070 germicidal effect Effects 0.000 description 3
- 235000013351 cheese Nutrition 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000009928 pasteurization Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229920006129 ethylene fluorinated ethylene propylene Polymers 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- A23B2/00—Preservation of foods or foodstuffs, in general
- A23B2/50—Preservation of foods or foodstuffs, in general by irradiation without heating
- A23B2/53—Preservation of foods or foodstuffs, in general by irradiation without heating with ultraviolet light
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- A23B2/00—Preservation of foods or foodstuffs, in general
- A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
- A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B2/721—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O
-
- A23L3/28—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
- B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
- B65B55/08—Sterilising wrappers or receptacles prior to, or during, packaging by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
- B65B55/12—Sterilising contents prior to, or during, packaging
- B65B55/16—Sterilising contents prior to, or during, packaging by irradiation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
A method of sterilising food comprises providing a sealed package 11 containing the food F to be sterilised, irradiating the package with UV radiation from lamps 14,16 and allowing the UV radiation to at least partially permeate the package 11. The food package can be agitated whilst being irradiated. The UV radiation has the effect of killing micro-organisms on the food product F and in the air trapped within the package 11. In a preferred embodiment, the food package 11 is irradiated with UV radiation having a wavelength of less than 240nm, which creates ozone inside the package 11 that helps to kill micro-organisms and substantially increases the self life of the product. The article of packaging 11 preferably has at least one wall 13 formed of a material such as a fluoropolymer which is transparent to UV radiation having a wavelength of less than 240nm. A radiation apparatus for use in the method comprises a fan 29 for creating an airflow away from the lamp 25 and means 30 for treating the airflow to reduce the quantity of any harmful ozone in the surrounding atmosphere.
Description
Sterilisatiori of packaged food This invention relates to the sterilisation of packaged food, to a method of packaging food and to an article of food packaging for use in the method.
The shelf life of food is substantially shortened due to the presence of micro-organisms in the food, which can cause the food to deteriorate. Furthermore, the presence of certain micro-organisms in food can be hazardous if the food is ingested.
These problems can be exacerbated if the food is not kept sufficiently refrigerated, since the micro-organisms in the food can multiply rapidly.
In order to overcome the above-mentioned problems, it has been proposed to pasteurise food. However, a disadvantage of pasteurisation is that the process is lengthy and can only be used on certain types of food. Furthermore, the pasteurisation process affects the taste of the food and is costly to perform, since it uses a substantial amount of energy, a great deal of which is discharged into the working environment.
We have now devised a method of sterilising food which alleviates the above-mentioned problems.
In accordance wfth the present invention, there is provided a method of sterilising food comprising providing a sealed package containing the food to be sterilised, irradiating the package with ultra-violet radiation and allowing the ultra-violet radiation to at least partially permeate said sealed package.
Ultra-violet radiation has germicidal properties which can kill micro-organisms in the food if a sufficient dose of radiation is applied. Most food packaging is formed of a plastics material, such as polyethylene, which is substantially transparent to ultra-violet light having a germicidal wavelength of 250 to 260 nm and most preferably 254 nm: mercury discharge ultra-violet lamps having a high spectral output of 254 nm are widely available and these are found to be ideal at killing micro-organisms.
The ultra-violet fight has the effect of killing micro-organisms on the food product itself and in the air trapped within the sealed package.
Preferably the package is exposed to the ultra-violet radiation by passing it in front of a tamp which emits a substantial part of its spectral output in the ultra-violet spectrum.
Preferably the package is passed in front of a plurality of ultra-violet lamps, in order to increase the dose of radiation.
Preferably the package is passed between a pair of oppositely-directed lamps, in order to radiate the package on more than one side.
It is known that ultra-violet light has the effect of splitting oxygen molecules into oxygen atoms, which then combine with other oxygen molecules to form ozone.
Ozone is a powerful oxidising allotropic form of the element oxygen, the ozone molecule containing three atoms of oxygen. The bonds in the oxygen molecules are disassociated at an energy level of 5.61 ev, which occurs when the molecules are radiated by radiation having a wavelength of less than 240 nm.
Ozone is a strong oxidising agent, which is known to kill micro-organisms. The effect of the ultra-violet and/or the ozone inside the packaging substantially kills all of the micro-organisms and substantially increases the self life of the food product.
Preferably the food package is irradiated with UV light having a wavelength of less than 240nm in order to create ozone inside the food package.
Preferably the food package is agitated, preferably whilst being exposed to ultra-violet radiation. The agitation disturbs and separates the food product and any micro-organisms thereon become airborne. Furthermore, any ozone within the sealed package flows between and around the individual food products (such as slices of meat or cheese) within the package.
A disadvantage of conventional food packaging materials, such as polyethylene, is that are substantially opaque to radiation having wavelengths of 240 nm.
Thus, in accordance with this invention, there is also provided an article of food packaging, the article comprising a container having at least one side wall formed of material having a high (ie greater than 30%) optical transmissivity to UV light having a wavelength shorter than 240 nm.
We have found that fluoropolymers have a high transmassivity (i.e. greater than 30%), to ultra-violet light having wavelengths of less than 240 nm, being the wavelengths at which ozone is generated.
Preferably the material is a fluoropolymer, such as FEP, EFEP or MFA.
Preferably the package comprises a body having a base and one or more upstanding side walls and a closure sealed to the upper edge of the or each side wall, said closure being formed of said fluoropolymer. The body may be formed of a conventional packaging material such as polyethylene. In use, ozone is generated inside the package by directing ultra-violet light having a wavelength of less 240 nm or through the closure.
Also in accordance with this invention, there is provided a method of packaging food comprising sealing the food inside an article of food packaging as hereinbefore defined.
Preferably the method comprises radiating the package with ultra-violet light, the ultra-violet light preferably having a wavelength of less than 240 nm.
Preferably the method comprises radiating the package with ultra-violet fight through a closure thereof.
The presence of ozone in The atmosphere presents a health hazard and a disadvantage of radiating the food product with high-intensity ultra-violet light having a wavelength of less than 240 nm is that the light also turns the air in the surrounding environment into ozone.
Thus, also in accordance with this invention there is provided a radiation apparatus for use in the above-mentioned method, the apparatus comprising a source of radiation arranged to generate ultra-violet light having a wavelength of less than 240 nm, means for creating an airflow away from The source ouiadiation and -means for treating the airflow to reduce the quantity of any ozone therein.
Preferably the treating means comprises a source of radiation arranged to generate ultra-violet light having a wavelength of 240 nm or more: ozone molecules are converted back to oxygen molecules when radiated by ultra-violet having a wavelength of greater than 240 nm, such as 254 nm.
Embodiments of the present invention will now be described by way of examples only and with reference to the accompanying drawings, in which: Figure 1 is a side view of a food sterilisation apparatus utilising a method of sterilising food in accordance with this invention; and Figure 2 is a side view of an altemative embodiment of food sterilisation apparatus utilising an alternative method of sterilising food in accordance with this invention.
Referring to Figure 1 of the drawings, there is shown a food sterilisation apparatus comprising a conveyor 10, which is arranged to convey a succession of packaged food products 11 through a sterilising station 19.
The packaged food product 11 comprise a shallow tray 12 having a base and upstanding side walls. A plurality of items of food F, such as slices of cheese or meat, are placed in the tray 12 upstream of the sterilising station 19. A transparent film 13 is then sealed to the upper edges of the tray 12, in order to form a hermetic seal around the food items F. The packaged food product 11 is then advanced on the conveyor 10 to the sterilising station 19, which comprises an array of elongate ultra-violet lamps 14, which respectively extend perpendicular to the direction of travel of the conveyor 10. The lamps 14 are arranged in a series which extends longitudinally of the conveyor 10. A reflector 15 is disposed below the lamps 14 and is arranged to reflect the light upwardly through the conveyor 10 and onto the packaged food product 11. A similar array of ultra-violet lamps 16 are arranged over the conveyor below a reflector 17, which is arranged to direct the ultra-violet light downwardly onto the packaged food product 11.
The tray 12 and the covering film 13 of the packaged food product 11 are formed of polyethylene or another material, which is substantially transparent to ultra-violet light having a germicidal wavelength. By the term substantially transparent, it is meant that the material allows more than 30% of the radiation to pass through.
The ultra-violet lamps 14, 16 may comprise mercury arc lamps, which have a high spectral output at 254 nm. The light emitted by the lamps 14, 16 iSermeates into the interior of the packaged food product 11, thereby exposing any micro-organisms on the food product F, or in the air within the product 11, to ultra-violet radiation. This radiation effectively kills all of the micro-organisms that receive a sufficient dose of radiation. The dose can be controlled by controlling the intensity of the lamps, the speed of the conveyor 10, and/or the number of lamps.
In order to enhance the effect, means 18 may be provided for agitating the conveyor 10: this lifts and disturbs the food F, thereby causing any micro-organisms thereon to become airborne and therefore exposed to the ultra-violet radiation.
Referring to Figure 2 of the drawings, there is shown an alternative embodiment of food sterilisation apparatus comprising a conveyor 20 for conveying a packaged food product 21 from a packaging station (not shown) to a sterilising station 22. The packaged food product 21 comprises a shallow tray 23 having a base and upstanding side walls. A film 24 of a material having a high (ie greater than 30%) optical transniissivity to wavelengths shorter than 240 nm, such as fluoropolymer, is sealed to the upper edges of the or each upstanding side wall in order to hermetically seal the food product P. The sterilising station 22 comprises a lamp 25, which produces a high output at 200 to 240 nm. The lamp 25 is arranged inside an enclosure 26, which is directed downwardly towards the conveyor 20. The enclosure 26 comprises a reflective top wall 27 and a bottom wall 28 formed of a material, such as quartz, which is optically transparent to UV light. A plurality of fans 29 draw air from the atmosphere surrounding the sterilisation station 22 into the enclosure 26. The air then flows over a further ultra-violet lamp 29, arranged in a separate enclosure 30 of the sterilisation: station 22. The ultra-violet lamp 30 is arranged to output a substantial amount of radiation at 254 nm, the radiation being shielded from the lamp 25 in the enclosure 26, The airthenfiows out of the chamber 30 into the atmosphere.
In use, the lamp 25 is energised to produce a high output pulse of ultra-violet light having a wavelength of 200 -240 nm. The pulse of light is directed downwardly onto the packaged food product 21, the light passing through the film 24 and into the interior of the packaging. The light converts a substantial amount of the oxygen trapped within the packaged food product 21 into ozone. The ozone is highly oxidising and serves to kill any micro-organisms that are contained within the product 21.
The lamp 25 also produces some light having wavelengths of greater than 240 nm, which can undesirably change some of the ozone within the packaged food item 21 back into oxygen. In order to overcome this problem a filter (not shown) may filter the emitted light of wavelengths of greater than 240 nm prior to reaching the packaged food item 21.
The ozone remains trapped inside the packaged food item 21 and is thus harmless to personnel in the surrounding environment. The ozone reverts back to oxygen within approximately 20 minutes following exposure to the ultra-violet radiation. Any ozone that is generated within the surrounding environment is drawn by the fans 29 into the sterilisation station 22, where it is passed over the ultra-violet lamp 29. The lamp 29 is operating at 254 nm, which converts the ozone back into oxygen so that it can be safely discharged into the environment.
The conveyor 20 may also comprise means for agitating the packaged food item 21, so that the ozone is disbursed inside the package and so that the ozone can flow between individual food products contained within the package.
A method of sterilising food in accordance with the present invention is relatively straightforward and inexpensive to perform, yet reliably sterilises the food products without affecting taste. The treated food products have a greater shelf life and are less likely to contain harmful micro-organisms.
Claims (22)
1. A method of sterilising food comprising providing a sealed package containing the food to be sterilised, irradiating the package with ultra-violet radiation and allowing the ultra-violet radiation to at least partially permeate said sealed package.
2. A method as claimed in claim 1, in which said providing step comprises providing a sealed package formed of a plastics material which is substantially transparent to ultra-violet light having a wavelength of 250 to 260 nm.
3. A method as claimed in claims 1 or 2, in which said irradiating step comprises irradiating the package with ultra-violet radiation having a wavelength of 250 to 260 nm.
4. A method as claimed in any preceding claim, in which the package is exposed to the ultra-violet radiation by passing it in front of a lamp which emits a substantial part of its spectral output in the ultra-violet spectrum.
5. A method as claimed in claim 4, in which the package is passed in front of a plurality of ultra-violet lamps.
6. A method as claimed in claim 5, in which the package is passed between a pair of oppositely-directed lamps. * * S...
7. A method as claimed in any preceding claim, in which the food package is irradiated with UV light having a wavelength of less than 240nm in order to . create ozone inside the food package. S...
8. A method as claimed in any preceding claim, in which the food package is : agitated.
9. A method as claimed in claim 8, in which the food package is agitated whilst being exposed to ultra-violet radiation.
10. A method of sterilising food, the method being substantially as herein described with reference to the accompanying drawings.
11 An article of food packaging, the article comprising a container having at least one side wall formed of material having a high optical transmissivity to UV light having a wavelength shorter than 240 nm.
12.An article of food packaging as claimed in claim 11, in which said material comprises a fluoropolymer.
13. An article of food packaging as claimed in claim 12, in which the package comprises a body having a base and one or more upstanding side walls and a closure sealed to the upper edge of the or each side wall, said closure being formed of said fluoropolymer.
14. An article of food packaging as claimed in claim 13, in which said body is formed of polyethylene.
15. An article of food packaging substantially as herein described with reference to the accompanying drawings.
16. A method of packaging food comprising sealing the food inside an article of food packaging as claimed in any of claims 11 to 14.
*: 25
17. A method as claimed in claim 16, comprising irradiating the package with ultra-violet light I...
18. A method as claimed in claim 17, comprising irradiating the package with ultra-violet light having a wavelength of less than 240 nm.
19. A method as claimed in claims 17 or 18, comprising irradiating the package with ultra-violet light through a closure thereof.
20. A radiation apparatus for use in the method of claims 1 to 11, the apparatus comprising a source of radiation arranged to generate ultra-violet light having a wavelength of less than 240 nm, means for creating an airflow away from the source of radiation and means for treating the airflow to reduce the quantity of any ozone therein.
21 An apparatus as claimed in claim 20, in which the treating means comprises a source of radiation arranged to generate ultra-violet light having a wavelength of 240 nm or more.
22. An apparatus substantially as herein described with reference to the accompanying drawings. * * * ** * **** * . S.,.
St.... * . S... * I I... S... * I S
II I * I * S I * I,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0801775A GB2457057A (en) | 2008-01-31 | 2008-01-31 | Sterilisation of food contained within a sealed receptacle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0801775A GB2457057A (en) | 2008-01-31 | 2008-01-31 | Sterilisation of food contained within a sealed receptacle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0801775D0 GB0801775D0 (en) | 2008-03-05 |
| GB2457057A true GB2457057A (en) | 2009-08-05 |
Family
ID=39186645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0801775A Pending GB2457057A (en) | 2008-01-31 | 2008-01-31 | Sterilisation of food contained within a sealed receptacle |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2457057A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011105978A1 (en) * | 2010-02-26 | 2011-09-01 | Mehmet Ali Topo | Antibacterial package for solid and liquid food and method of manufacturing thereof |
| ITVI20100120A1 (en) * | 2010-04-30 | 2011-10-31 | Renova S R L | SANITIZATION SYSTEM OF DIVIDED MATERIAL IN AGGLOMERATES AND SANITIZATION PROCEDURE. |
| CN102438661A (en) * | 2009-04-07 | 2012-05-02 | 奥唑尼卡有限公司 | Sterilization of packaged articles |
| WO2012153134A2 (en) | 2011-05-09 | 2012-11-15 | Ozonica Limited | Disinfection of packaged articles |
| WO2016186068A1 (en) * | 2015-05-19 | 2016-11-24 | 株式会社トクヤマ | Ultraviolet sterilization method, method for manufacturing container-packaged product, and ultraviolet sterilization device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128500A (en) * | 2017-12-20 | 2018-06-08 | 杭州加包装技术有限责任公司 | A kind of online sterilizing unit of packaging film |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139737A (en) * | 1976-05-19 | 1977-11-21 | Mitsubishi Plastics Ind | Method of packing food |
| JPS58112929A (en) * | 1981-12-12 | 1983-07-05 | 名古屋製酪株式会社 | Sealing method which can preserve food for prolonged term by using baggy packing vessel |
| US4983411A (en) * | 1988-08-29 | 1991-01-08 | Kureha Chemical Industry Co., Ltd. | Sterilization of vacuum packaged raw meat |
| DE4403795A1 (en) * | 1994-02-03 | 1995-08-10 | Fouad Dipl Ing Khalil | Modification of a food mixer for sterilising |
| US5675153A (en) * | 1993-10-06 | 1997-10-07 | Snowball; Malcolm Robert | UV apparatus for fluid treatment |
| US20030155531A1 (en) * | 1996-05-22 | 2003-08-21 | Clark Reginald Wayne | Sterilization of packages and their contents using light |
| WO2005077121A2 (en) * | 2004-02-10 | 2005-08-25 | Swift & Company | Methods of controlling microorganisms in packaged foods |
| CN1742620A (en) * | 2004-09-02 | 2006-03-08 | 涂振仲 | Method for processing cooked bamboo shoots and preservation and fresh-keeping method |
-
2008
- 2008-01-31 GB GB0801775A patent/GB2457057A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139737A (en) * | 1976-05-19 | 1977-11-21 | Mitsubishi Plastics Ind | Method of packing food |
| JPS58112929A (en) * | 1981-12-12 | 1983-07-05 | 名古屋製酪株式会社 | Sealing method which can preserve food for prolonged term by using baggy packing vessel |
| US4983411A (en) * | 1988-08-29 | 1991-01-08 | Kureha Chemical Industry Co., Ltd. | Sterilization of vacuum packaged raw meat |
| US5675153A (en) * | 1993-10-06 | 1997-10-07 | Snowball; Malcolm Robert | UV apparatus for fluid treatment |
| DE4403795A1 (en) * | 1994-02-03 | 1995-08-10 | Fouad Dipl Ing Khalil | Modification of a food mixer for sterilising |
| US20030155531A1 (en) * | 1996-05-22 | 2003-08-21 | Clark Reginald Wayne | Sterilization of packages and their contents using light |
| WO2005077121A2 (en) * | 2004-02-10 | 2005-08-25 | Swift & Company | Methods of controlling microorganisms in packaged foods |
| CN1742620A (en) * | 2004-09-02 | 2006-03-08 | 涂振仲 | Method for processing cooked bamboo shoots and preservation and fresh-keeping method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438661A (en) * | 2009-04-07 | 2012-05-02 | 奥唑尼卡有限公司 | Sterilization of packaged articles |
| WO2011105978A1 (en) * | 2010-02-26 | 2011-09-01 | Mehmet Ali Topo | Antibacterial package for solid and liquid food and method of manufacturing thereof |
| ITVI20100120A1 (en) * | 2010-04-30 | 2011-10-31 | Renova S R L | SANITIZATION SYSTEM OF DIVIDED MATERIAL IN AGGLOMERATES AND SANITIZATION PROCEDURE. |
| WO2012153134A2 (en) | 2011-05-09 | 2012-11-15 | Ozonica Limited | Disinfection of packaged articles |
| US8641977B2 (en) | 2011-05-09 | 2014-02-04 | Ozonica Limited | Disinfection of packaged articles |
| US9597422B2 (en) | 2011-05-09 | 2017-03-21 | Ozonica Limited | Disinfection of packaged articles |
| WO2016186068A1 (en) * | 2015-05-19 | 2016-11-24 | 株式会社トクヤマ | Ultraviolet sterilization method, method for manufacturing container-packaged product, and ultraviolet sterilization device |
| JP2016216078A (en) * | 2015-05-19 | 2016-12-22 | 株式会社トクヤマ | UV sterilization method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0801775D0 (en) | 2008-03-05 |
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