EP1148955A1 - Verfahren zur reinigung von mehrwegflaschen - Google Patents
Verfahren zur reinigung von mehrwegflaschenInfo
- Publication number
- EP1148955A1 EP1148955A1 EP00902629A EP00902629A EP1148955A1 EP 1148955 A1 EP1148955 A1 EP 1148955A1 EP 00902629 A EP00902629 A EP 00902629A EP 00902629 A EP00902629 A EP 00902629A EP 1148955 A1 EP1148955 A1 EP 1148955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- cleaning solution
- bottles
- enzyme
- weight
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38618—Protease or amylase in liquid compositions only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/18—Glass; Plastics
Definitions
- the invention described below lies in the field of commercial cleaning and relates to an automatic, gentle method for cleaning reusable bottles and other reusable containers which serve to hold food.
- the reusable containers can consist of a wide variety of materials, in particular glass or plastics, such as polycarbonate (PC), polyvinyl chloride (PVC), polyester (for example polyethylene terephthalate, PET or polyethylene naphthenate, PEN) and polyethylene (PE).
- PC polycarbonate
- PVC polyvinyl chloride
- PET polyethylene terephthalate
- PEN polyethylene naphthenate
- PE polyethylene
- Bottles are preferably used for liquids, while cups or cans are preferably used for foods with pasty, gel-like or solid consistency.
- bottles or bottle cleaning we will only speak of bottles or bottle cleaning in the following, meaning that the other containers to be cleaned in this way or their cleaning are also meant.
- zones for pre-rinsing, cleaning and post-rinsing there can be several separate zones for pre-rinsing, cleaning and post-rinsing, and depending on the intended use, additional zones, such as an upstream emptying of the bottles, are provided.
- the contacting of the bottles with the cleaning liquids can take place differently in each zone and is usually designed as a spraying or dipping process.
- the bottles are first slowly warmed up in the pre-cleaning area, treated in the lye area at a significantly higher temperature and then cooled down again in the subsequent rinsing zones.
- the division into different baths and zones means that cleaning agents, water and thermal energy are used economically and effectively.
- This area comprises at least one zone in which the bottles are treated with a cleaning solution at high temperatures of usually about 60 to 90 ° C., depending on the bottle material. Particularly good cleaning effects are achieved when 1 to 3 caustic baths are combined with a subsequent caustic spray zone.
- a cleaning solution is used as the lye, which contains approx. 1-3% sodium hydroxide as well as additives to sequestering agents, surfactants and other cleaning-active components. Only with such highly alkaline alkalis has it previously been believed that the bottles can be cleaned satisfactorily in a short time.
- the object of the present invention was to develop an improved method for cleaning bottles, with which the disadvantages of the previously customary methods are avoided as far as possible without having to accept compromises in the cleaning result.
- the invention therefore relates to a method for cleaning reusable bottles and similar containers which serve to hold food, in which the used bottles are transported in a bottle washing machine through a plurality of cleaning zones, of which at least one zone of pre-rinsing and at least one subsequent zone of treatment serve with a cleaning solution at elevated temperature and at least one further zone of rinsing with water, at least one enzyme being added to the cleaning solution to enhance the cleaning performance.
- Enzymes from the group of proteases, amylases, cellulases, lipases, oxidoreductases and mixtures of these enzymes are preferably used.
- the use of proteases, in particular highly alkaline proteases, alone or together with other enzymes is particularly preferred.
- Another object of the invention is the use of a corresponding solution in a method mentioned above.
- all those enzymes can be used as enzymes which have a degrading effect on the food residues and impurities to be removed.
- the above-mentioned enzymes from the group of proteases, amylases, cellulases, glycosidases, lipases and oxidoreductases are particularly preferred.
- the cleaning process can be specifically adapted to the food residues to be removed.
- proteases are preferably used to remove protein-containing impurities
- lipases are used for starch-containing impurities, preferably amylases and for the removal of fatty impurities.
- the combination of several enzymes for different substrates is recommended if mixed impurities are present.
- Proteases are therefore primarily used for the preferred application of the method according to the invention in the area of bottles for dairy products, in particular for milk bottles.
- Particularly preferred is the use of so-called highly alkaline proteases which have an isoelectric point in the range above pH 10 and whose optimum activity lies in the pH range from approximately 9 to approximately 12.
- This enzyme group includes certain representatives of the serine proteases obtained from bacteria, known as subtilisins, which as a subgroup in scientific literature have been given the common name I-S2.
- This group includes, for example, the enzymes referred to as Subtilisin 147, Subtilisin 309 and Subtilisin PB92 (see also RJ Siezen et al, Protein Engineering Vol.
- Highly alkaline proteases are also commercially available as enzyme preparations, for example under the names Savinase ® , Esperase ® , Durazym ® , Maxacal ® , Plurafect ® , Opticlean ® and BLAP ® . In addition to the actual active enzyme, these preparations usually contain large amounts of stabilizing agents and carriers.
- the enzyme content is usually not given as a percentage by weight, but in a standardized manner in the form of activity units; for the proteases, therefore, the available protein-splitting activity in the respective enzyme preparation or in the enzyme-containing solution.
- the KNPU Koreano Novo Protease Units
- the enzyme solution used according to the invention should preferably contain about 0.16 KNPU to about 160 KNPU, in particular about 0.8 KNPU to about 80 KNPU per liter. The range from about 1.6 KNPU to about 16 KNPU per liter of application solution is particularly preferred.
- the content of the other enzymes is measured in a similar manner: Unit for amylase: MWU (Modified Wohlgemut Unit) Unit for lipase: KLU (Kilo Lipolase Unit
- the preparation of the cleaning solution used according to the invention is preferably based on the highly concentrated liquid or powdery enzyme preparations which are offered by various manufacturers. The blending agents, auxiliaries or solvents added to these enzyme preparations then also become part of the cleaning solution.
- the preparations of highly alkaline proteases offered under the name Savinase ®, Maxacal ® and BLAP ® are particularly preferred for the novel process.
- the finished enzyme-containing cleaning solutions intended to act on the bottles generally have a weakly alkaline pH, which is preferably between about 8 and about 12 and in particular between about 8.5 and about 9.5 (measured at 20 ° C.) .
- a pH value significantly below the value in the activity maximum of the enzyme is chosen especially when it is important to maintain the activity of the enzyme in the application solution for as long as possible.
- the pH can be adjusted by methods known per se, for example by using substances with a buffering action or also by a device for automatically metering the necessary amount of alkali.
- the cleaning solution is to act on the bottles at elevated temperature, with significantly lower temperatures than with the previously known cleaning with highly alkaline solutions being sufficient.
- the exposure temperatures are preferably between approximately 30 and approximately 70 ° C., in particular between approximately 40 and approximately 55 ° C. Despite these low exposure temperatures, no longer exposure times than with conventional cleaning processes are necessary to achieve a perfect cleaning result.
- the enzyme-containing cleaning solutions used according to the invention can contain further active ingredients and auxiliaries.
- surfactants for strengthening the cleaning action are to be mentioned here, whereby in principle surfactants from all known classes can be used.
- nonionic, cationic and amphoteric surfactants are preferred which in turn have the most important nonionic surfactants.
- further auxiliaries and additives are enzyme stabilizers, such as soluble calcium salts and borates, compounds with a threshold effect, complexing agents, builders, thickeners, antioxidants, foam inhibitors and preservatives. When choosing all auxiliaries and additives, care must be taken to ensure that there are no interfering interactions with one another and with the enzymes.
- Suitable nonionic surfactants are in particular the addition products of long-chain alcohols, alkylphenols, amides and carboxylic acids with ethylene oxide (EO), if appropriate together with propylene oxide (PO).
- EO ethylene oxide
- PO propylene oxide
- these include, for example, the addition products of long-chain primary and secondary alcohols with 12 to 18 carbon atoms in the chain, in particular of fatty alcohols and oxoalcohols of this chain length with 1 to 20 mol of EO, and the addition products of fatty acids with 12 to 18 carbon atoms in the chain with preferably 2 to 8 moles of ethylene oxide.
- the mixed addition products of ethylene and propylene oxide and fatty alcohols having 12 to 18 carbon atoms are particularly preferred, in particular those which contain about 2 mol of EO and about 4 mol of PO in the molecule.
- the open terminal functional alcohol group can also be closed by an alkyl group. Methyl or butyl is preferably used as the alkyl group.
- nonionic surfactants examples include alcohol alkoxylates about the fat supplied under the names Dehypon® ® LS24, LS54 Dehypon® ®, Eumulgin ® 05, Dehydrol® ® LT8, Dehydrol® ® LT8, Dehydrol® ® LT 6, Dehydrol® ® LS6 and Dehydrol® ® LT104 by Henkel KGaA .
- Other suitable nonionic surfactants are the esters of fatty acids with 6 to 12 carbon atoms and polyols, especially carbohydrates, eg glucose. If nonionic surfactants are present in the cleaning solutions used according to the invention, their content there is preferably about 0.001 to about 0.08% by weight, in particular about 0.01 to about 0.05% by weight, based on the ready-to-use solution.
- Suitable cationic surfactants are, in particular, aliphatic and heterocyclic quaternary ammonium compounds and quaternary phosphonium compounds, which am - o -
- quaternary center have at least one long-chain C 8 to C 18 alkyl radical.
- cationic surfactants are cocoalkyl-benzyl-dimethylammonium chloride, dioctyl-dimethylammonium chloride and tributyl-tetradecylphosphonium chloride.
- Suitable amphoteric surfactants are, in particular, C ⁇ to cis fatty acid amide derivatives with a betaine structure, in particular derivatives of glycine, for example cocoalkyldimethylammonium betaine.
- Cationic or amphoteric surfactants are preferably used in amounts of not more than 0.08% by weight, in particular between 0.001 and 0.02% by weight, in the cleaning solution.
- Suitable compounds with a threshold effect are polyphosphates, phosphonic acids and polycarboxylates.
- Suitable polyphosphates are in particular orthophosphate, pyrophosphate, tripolyphosphate, tetrapolyphosphate, hexametaphosphate.
- Suitable phosphonic acids are primarily nitrilotrimethylenephosphonic acid, hydroxyethane diphosphonic acid, phosphonobutane tricarboxylic acid and other derivatives of phosphonic acid.
- Suitable polycarboxylates preferably come from the class of polyacrylates, polysuccinates, polyasparaginates or other salts of polyorganic acids.
- Suitable builders are the polyphosphates, phosphonates, gluconates, citrates, EDTA, NTA and other complexing agents suitable as builders. Compounds with a threshold effect are preferably used in amounts of about 0.002 to about 0.05% by weight, in particular about 0.004 to about 0.02% by weight, based on the finished application solution.
- the individual components of the solution can in principle be metered separately and dissolved in the water. It is more expedient, however, to start from prefabricated concentrates which contain several or preferably all of the constituents in the correct mixing ratio, so that only a few metering steps or only one are required. Liquid concentrates are particularly easy to dose, but concentrated formulations also come in the form of powder, tablets or WO 00/45969 _ g _ PCT / EP00 / 0 ⁇ 532
- Solubilizers such as cumene sulfonate, xylene sulfonate and octyl sulfonate can be considered as additional constituents of liquid concentrates, but other conventional solubilizers can of course also be used.
- the content of solubilizers is selected as required and is preferably about 1 to about 10% by weight, in particular about 2 to about 5% by weight, based on the concentrate as a whole.
- Liquid concentrates can also contain large amounts of organic solvents, especially polyols, such as propylene glycol or glycerin.
- a general formulation for a liquid and a solid detergent concentrate is given:
- Liquid cleaning concentrate
- Enzyme in particular protease 1 to 10% by weight, preferably 3 to 6% by weight
- Glycerol 5 to 20% by weight, preferably 5 to 8% by weight nonionic surfactant 2 to 40% by weight, preferably 5 to 25% by weight
- Quaternary ammonium compounds e.g. Dioctyldimethylammonium chloride 1 to 40% by weight, preferably 2 to 5% by weight
- Enzyme in particular protease 1 to 10% by weight, preferably 3 to 6% by weight
- Nonionic surfactant 2 to 40% by weight, preferably 5 to 25% by weight
- Quaternary ammonium compound eg dioctyldimethylammonium chloride 1 to 40% by weight, preferably 2 to 10% by weight
- Potassium triphosphate 1 to 30% by weight, preferably 3 to 10% by weight
- Phosphonate 0.5 to 5% by weight, preferably 1 to 3% by weight
- the cleaning agent concentrates are usually added to the water in amounts of about 0.05 to about 0.5% by weight, preferably 0.1 to 0.2% by weight, in order to obtain a ready-to-use cleaning solution for the process according to the invention.
- the cleaning test was carried out in a one-end bottle washer, which is often found in practice and is sold by machine manufacturers such as Krones, KHS or Simonazzi.
- the treatment sequence in the machine included two pre-soak stages, an alkali softening zone, two alkali sprayings, a post-alkali, two warm water baths with spray for rinsing out the cleaning solution and a cold water zone with fresh water spray.
- the aim of the cleaning attempt was to clean heavily soiled glass milk bubbles, which the consumer returned to the milk filling area as normal return material, within a caustic treatment time (caustic soak, caustic spray and post-caustic) of approx. 8 minutes.
- the test was carried out with 50,000 dirty bottles in a conventional cleaning solution.
- the liquor contained an aqueous solution of about 2% NaOH, 0.02% sodium gluconate, 0.02% sodium citrate, 0.04% Dehypon LT 104 ®, 0.02% NTA in detail.
- the total exposure time including dipping and spraying was approx. 8 minutes and the exposure temperature was around 85 ° C. After visual inspection, 258 bottles out of 50,000 bottles were not completely cleaned.
- the new cleaning solution contained in particular an aqueous solution of approx. 0.005% Esperase, 0.036% butylglycol, 0.020 Dehypon ® LT 104.
- the total contact time was also approx. 8 minutes and the contact temperature was around 50 ° C.
- 26 bottles with residues were identified by visual inspection after the cleaning process.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904512 | 1999-02-04 | ||
| DE19904512A DE19904512A1 (de) | 1999-02-04 | 1999-02-04 | Verfahren zur Reinigung von Mehrwegflaschen |
| PCT/EP2000/000532 WO2000045969A1 (de) | 1999-02-04 | 2000-01-25 | Verfahren zur reinigung von mehrwegflaschen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1148955A1 true EP1148955A1 (de) | 2001-10-31 |
| EP1148955B1 EP1148955B1 (de) | 2005-03-09 |
Family
ID=7896419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00902629A Expired - Lifetime EP1148955B1 (de) | 1999-02-04 | 2000-01-25 | Verfahren zur reinigung von mehrwegflaschen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6530386B1 (de) |
| EP (1) | EP1148955B1 (de) |
| AT (1) | ATE290439T1 (de) |
| AU (1) | AU2439800A (de) |
| DE (2) | DE19904512A1 (de) |
| PL (1) | PL350164A1 (de) |
| WO (1) | WO2000045969A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7125204B2 (en) | 2003-10-31 | 2006-10-24 | Finn Corporation | Portable pneumatic blower |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10141239C2 (de) * | 2001-08-23 | 2003-12-18 | Korn Gmbh | Verwendung flüssiger, wasserverdünnbarer Pre-Rinsing Zusammensetzungen und Verfahren zum Aufbringen derselben |
| US20040235680A1 (en) * | 2002-09-18 | 2004-11-25 | Ecolab Inc. | Conveyor lubricant with corrosion inhibition |
| MXPA05002890A (es) * | 2002-09-18 | 2005-06-22 | Ecolab Inc | Aditivo para utilizarse en composiciones de lavado de botellas. |
| US9487735B2 (en) | 2012-05-14 | 2016-11-08 | Ecolab Usa Inc. | Label removal solution for low temperature and low alkaline conditions |
| RU2632882C2 (ru) | 2012-05-14 | 2017-10-11 | ЭКОЛАБ ЮЭсЭй ИНК. | Раствор для удаления этикеток с многоразовых бутылок для напитков |
| WO2014200657A1 (en) | 2013-06-13 | 2014-12-18 | Danisco Us Inc. | Alpha-amylase from streptomyces xiamenensis |
| WO2014200656A1 (en) | 2013-06-13 | 2014-12-18 | Danisco Us Inc. | Alpha-amylase from streptomyces umbrinus |
| WO2014200658A1 (en) | 2013-06-13 | 2014-12-18 | Danisco Us Inc. | Alpha-amylase from promicromonospora vindobonensis |
| US20160130571A1 (en) | 2013-06-17 | 2016-05-12 | Danisco Us Inc. | Alpha-Amylase from Bacillaceae Family Member |
| US20160160199A1 (en) | 2013-10-03 | 2016-06-09 | Danisco Us Inc. | Alpha-amylases from exiguobacterium, and methods of use, thereof |
| US20160186102A1 (en) | 2013-10-03 | 2016-06-30 | Danisco Us Inc. | Alpha-amylases from exiguobacterium, and methods of use, thereof |
| JP6560214B2 (ja) | 2013-11-20 | 2019-08-14 | ダニスコ・ユーエス・インク | プロテアーゼ開裂に対する感受性を低減した変異体α−アミラーゼ、及びその使用方法 |
| DE102015008314A1 (de) | 2015-06-30 | 2017-01-05 | Krones Ag | Behandlungsmaschine zum Behandlen von Behältnissen und/oder Lebensmitteln mit Zuführung eines Arbeitsmediums |
| BR112018015267B1 (pt) | 2016-02-18 | 2023-03-07 | Ecolab Usa Inc | Método e composição para remover sujeiras, rótulos e outro material adesivo de uma superfície |
| WO2017173190A2 (en) | 2016-04-01 | 2017-10-05 | Danisco Us Inc. | Alpha-amylases, compositions & methods |
| WO2017173324A2 (en) | 2016-04-01 | 2017-10-05 | Danisco Us Inc. | Alpha-amylases, compositions & methods |
| WO2023014663A1 (en) | 2021-08-02 | 2023-02-09 | Ecolab Usa Inc. | Booster composition for cleaning fermentation equipment and methods of use |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2259201A1 (de) * | 1972-12-02 | 1974-06-20 | Kali Chemie Ag | Mittelalkalische enzymatische reinigungsmittel |
| DE3205956A1 (de) | 1982-02-19 | 1983-09-15 | Robert 6141 Einhausen Becker | Vorrichtung zur flaschenreinigung, bei der waerme zurueckgewonnen und frischwasser eingespart wird |
| EP0110472B1 (de) * | 1982-11-26 | 1988-06-22 | Unilever N.V. | Flüssige Detergens-Zusammensetzungen |
| DE4014747A1 (de) * | 1990-05-08 | 1991-11-14 | Henkel Kgaa | Reinigungsmittel fuer kunststoff-mehrweggebinde oder kunststoffbeschichtete mehrwegglasgebinde sowie verfahren zu deren reinigung |
| DE4411223A1 (de) * | 1994-03-31 | 1995-10-05 | Solvay Enzymes Gmbh & Co Kg | Verwendung alkalischer Proteasen in gewerblichen Textilwaschverfahren |
| CA2190349A1 (en) * | 1994-06-23 | 1996-01-04 | James William Gordon | Dishwashing compositions |
| US5861366A (en) * | 1994-08-31 | 1999-01-19 | Ecolab Inc. | Proteolytic enzyme cleaner |
| US5858117A (en) * | 1994-08-31 | 1999-01-12 | Ecolab Inc. | Proteolytic enzyme cleaner |
| DE19717329A1 (de) * | 1997-04-24 | 1998-10-29 | Henkel Ecolab Gmbh & Co Ohg | Flüssige Enzymzubereitung und ihre Verwendung |
| DE19838939A1 (de) * | 1998-08-27 | 2000-03-09 | Henkel Ecolab Gmbh & Co Ohg | Verfahren zur Reinigung von Milcherhitzern |
| AU5635300A (en) * | 1999-06-25 | 2001-01-31 | Clorox Company, The | Stain removing composition containing particular isolated and pure proteolytic enzymes |
-
1999
- 1999-02-04 DE DE19904512A patent/DE19904512A1/de not_active Ceased
-
2000
- 2000-01-25 AU AU24398/00A patent/AU2439800A/en not_active Abandoned
- 2000-01-25 DE DE50009724T patent/DE50009724D1/de not_active Expired - Fee Related
- 2000-01-25 AT AT00902629T patent/ATE290439T1/de not_active IP Right Cessation
- 2000-01-25 PL PL00350164A patent/PL350164A1/xx unknown
- 2000-01-25 EP EP00902629A patent/EP1148955B1/de not_active Expired - Lifetime
- 2000-01-25 WO PCT/EP2000/000532 patent/WO2000045969A1/de not_active Ceased
- 2000-01-25 US US09/890,612 patent/US6530386B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0045969A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7125204B2 (en) | 2003-10-31 | 2006-10-24 | Finn Corporation | Portable pneumatic blower |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2439800A (en) | 2000-08-25 |
| DE19904512A1 (de) | 2000-08-17 |
| PL350164A1 (en) | 2002-11-18 |
| EP1148955B1 (de) | 2005-03-09 |
| ATE290439T1 (de) | 2005-03-15 |
| US6530386B1 (en) | 2003-03-11 |
| DE50009724D1 (de) | 2005-04-14 |
| WO2000045969A1 (de) | 2000-08-10 |
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