GB2551639A - Formulation - Google Patents
Formulation Download PDFInfo
- Publication number
- GB2551639A GB2551639A GB1707615.9A GB201707615A GB2551639A GB 2551639 A GB2551639 A GB 2551639A GB 201707615 A GB201707615 A GB 201707615A GB 2551639 A GB2551639 A GB 2551639A
- Authority
- GB
- United Kingdom
- Prior art keywords
- range
- aqueous formulation
- aqueous
- hydrogen peroxide
- nitric acid
- 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.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 10
- 238000009472 formulation Methods 0.000 title abstract description 3
- 239000013011 aqueous formulation Substances 0.000 claims abstract description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 235000013405 beer Nutrition 0.000 claims abstract description 25
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000012895 dilution Substances 0.000 claims description 9
- 238000010790 dilution Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 description 5
- 241001534756 Mungos Species 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 241000589248 Legionella Species 0.000 description 1
- 208000007764 Legionnaires' Disease Diseases 0.000 description 1
- 241000862969 Stella Species 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/042—Acids
-
- 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
- C11D3/0005—Other compounding ingredients characterised by their effect
-
- 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
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3945—Organic per-compounds
-
- 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
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3947—Liquid compositions
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/08—Acids
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
-
- 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
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Detergent Compositions (AREA)
Abstract
An aqueous formulation for cleaning beer dispensing equipment comprises hydrogen peroxide in the range 3 to 8wt% and nitric acid in the range 2 to 6wt%. Also shown is a method of cleaning beer dispensing equipment using the formulation.
Description
FORMULATION
The present invention relates to an aqueous formulation for cleaning beer dispensing equipment, to a dilution obtainable therefrom and to the method and use thereof.
The cause of unwanted deposits in a beer line is not widely understood even by brewers. Most bar owners still refer to yeast deposits in the line and many hold this responsible for poor beer quality, smells and fobbing.
There are two main causes of fouling in a beer line. Firstly bacteria and the polysaccharides they produce are responsible for forming biofilm which serves as a matrix which binds other microorganisms including yeasts in a bacterial ecosystem. Secondly beerstone residues persist even after kegs used to transfer beer from a brewery to a pub are subjected to rigorous cleaning. Beerstone is primarily calcium oxalate which breaks off as white or dark brown flakes which host bacteria. The bacteria enter the beer line and start the formation of biofilm.
The present invention seeks to improve the cleaning of beer dispensing equipment using a specific aqueous formulation of hydrogen peroxide and nitric acid.
Thus viewed from a first aspect the present invention provides an aqueous formulation for cleaning beer dispensing equipment comprising: hydrogen peroxide in the range 3 to 8wt%; and nitric acid in the range 2 to 6wt%.
The aqueous formulation of the present invention has efficacy in the removal and prevention of biofilm whilst effectively descaling beer dispensing equipment. The aqueous formulation is non-corrosive, non-toxic and non-hazardous whilst being odourless, tasteless and colourless.
Preferably the aqueous formulation consists essentially of (eg is): hydrogen peroxide in the range 3 to 8wt%; and nitric acid in the range 2 to 6wt%.
Preferably hydrogen peroxide is present in the range 3 to 6wt%, particularly preferably in the range 4 to 5wt%, more preferably about 4.6wt%.
Preferably nitric acid is present in the range 2 to 5wt%, particularly preferably in the range 3 to 4wt%, more preferably about 3.8wt%.
The aqueous formulation may further comprise a detergent. The detergent may be one or more alkylbenzenesulfonates.
The aqueous formulation may further comprise a removal agent for removing deposits of calcium oxalate. The removal agent may be phosphoric acid.
The beer dispensing equipment is typically keg beer dispensing equipment such as (for example) couplings, sockets, nozzles, taps and beer lines.
The water in the aqueous formulation is preferably demineralised water.
Preferably the aqueous formulation is a mixture of an aqueous hydrogen peroxide solution having a concentration in the range 3 to 8wt% and an aqueous nitric acid solution having a concentration in the range 60 to 80wt% in a volume ratio in the range 30:1 to 18:1 or a molar equivalent of the mixture.
Preferably the aqueous hydrogen peroxide solution has a concentration in the range 4 to 6wt%, particularly preferably in the range 4.5 to 5.5wt%, more preferably about 4.9wt%.
Preferably the aqueous nitric acid solution has a concentration in the range 65 to 75wt%, particularly preferably in the range 68 to 72wt%, more preferably about 70wt%.
Preferably the volume ratio is in the range 28:1 to 20:1, particularly preferably in the range 26:1 to 22:1, more preferably about 24:1.
By "molar equivalent of the mixture" is meant a mixture of aqueous hydrogen peroxide solution and aqueous nitric acid solution having respective molarities equivalent to the molarities in the mixture stated hereinbefore.
Viewed from a further aspect the present invention provides a dilution obtainable by mixing an aqueous formulation as hereinbefore defined and water.
Preferably the dilution is obtainable by mixing the aqueous formulation and water in a volume ratio in the range 1:1 to 1:20, particularly preferably in the range 1:4 to 1:16, more preferably about 1:10.
Viewed from a yet further aspect the present invention provides a method for cleaning beer dispensing equipment comprising: applying an aqueous formulation or a dilution as hereinbefore defined to the beer dispensing equipment.
Viewed from an even yet further aspect the present invention provides the use of an aqueous formulation or a dilution as hereinbefore defined in cleaning beer dispensing equipment.
The present invention will now be described in a non-limitative sense with reference to an Example.
Example 2.4 litres of hydrogen peroxide at a concentration of 4.9wt% was mixed with 100ml of nitric acid at a concentration of 70wt% and stirred to make the aqueous formulation.
At various locations, samples were taken of beers before and after beer lines were cleaned according to current cleaning methods using 2.5 litres of the aqueous formulation. Samples were taken each week for four weeks after cleaning to prove that bacteria build up was low enough not to affect the drinker or the beer quality.
The results presented below for the stated beer samples are a measure of the quality of the sample (as received by a test agency) before and after cleaning. This may not be a true measure of the quality at the point of origin if prescribed sampling and transportation protocols were not adhered to. Legionella results are a theoretical value calculated from 500ml sample (excluding uncertainty). All tests were carried out to a schedule of accreditation (unless indicated otherwise by * or #). Counts marked E are estimated. 98% of samples taken after the clean are marked NONE DETECTED which means that absolutely no bacteria was found within the samples after a single clean with the aqueous formulation. RESULT 1
Sample description: Blue Moon (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 2
Sample description: San Miguel (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 3
Sample description: West St Mungos (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 4
Sample description: Belhaven Best (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 5
Sample description: Carling Extra Cold (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 6
Sample description: Blue Moon (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 7
Sample description: West St Mungos (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 8
Sample description: San Miguel (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 9
Sample description: Belhaven Best (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 10
Sample description: 1A Schiellion (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 11
Sample description: IB Tennents Ember (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 12
Sample description: 1C Tennents (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 13
Sample description: ID Stella (before)
Grade Key: 'G' = within specification
Microbiologically acceptable ? PASS RESULT 14
Sample description: 2A Schiellion (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 15
Sample description: 2B Tennents Ember (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 16
Sample description: 2C Tennents (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 17
Sample description: 2D Stella (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 18
Sample description: 1A St Mungo (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 19
Sample description: IB Peroni (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 20
Sample description: 1C Becks (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 21
Sample description: ID Inn's & Gunn (before)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 22
Sample description: 2A St Mungo (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 23
Sample description: 2B Peroni (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 24
Sample description: 2C Becks (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS RESULT 25
Sample description: 2D Inn's & Gunn (after)
Grade Key: 'G' = within specification Microbiologically acceptable ? PASS
Claims (17)
1. An aqueous formulation for cleaning beer dispensing equipment comprising: hydrogen peroxide in the range 3 to 8wt%; and nitric acid in the range 2 to 6wt%.
2. An aqueous formulation as claimed in claim 1 consisting essentially of: hydrogen peroxide in the range 3 to 8wt%; and nitric acid in the range 2 to 6wt%.
3. An aqueous formulation as claimed in claim 1 or 2 wherein hydrogen peroxide is present in the range 3 to 6wt%.
4. An aqueous formulation as claimed in any preceding claim wherein hydrogen peroxide is present in the range 4 to 5wt%.
5. An aqueous formulation as claimed in any preceding claim wherein nitric acid is present in the range 2 to 5wt%,
6. An aqueous formulation as claimed in any preceding claim wherein nitric acid is present in the range 3 to 4wt%.
7. An aqueous formulation as claimed in any preceding claim being a mixture of an aqueous hydrogen peroxide solution having a concentration in the range 3 to 8wt% and an aqueous nitric acid solution having a concentration in the range 60 to 80wt% in a volume ratio in the range 30:1 to 18:1 or a molar equivalent of the mixture.
8. An aqueous formulation as claimed in claim 7 wherein the aqueous hydrogen peroxide solution has a concentration in the range 4 to 6wt%
9. An aqueous formulation as claimed in claim 7 or 8 wherein the aqueous hydrogen peroxide solution has a concentration in the range 4.5 to 5.5wt%.
10. An aqueous formulation as claimed in any of claims 7 to 9 wherein the aqueous nitric acid solution has a concentration in the range 65 to 75wt%;
11. An aqueous formulation as claimed in any of claims 7 to 10 wherein the aqueous nitric acid solution has a concentration in the range 68 to 72wt%.
12. An aqueous formulation as claimed in any of claims 7 to 11 wherein the volume ratio is in the range 28:1 to 20:1
13. An aqueous formulation as claimed in any of claims 7 to 12 wherein the volume ratio is in the range 26:1 to 22:1.
14. A dilution obtainable by mixing an aqueous formulation as defined in any preceding claim and water.
15. A dilution as claimed in claim 14 obtainable by mixing the aqueous formulation and water in a volume ratio in the range 1:1 to 1:20, particularly preferably in the range 1:4 to 1:16, more preferably about 1:10.
16. A method for cleaning beer dispensing equipment comprising applying an aqueous formulation as defined in any of claims 1 to 13 or a dilution as defined in claim 14 or 15 to the beer dispensing equipment.
17. The use of an aqueous formulation as defined in any of claims 1 to 13 or a dilution as defined in claim 14 or 15 for cleaning beer dispensing equipment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB1608342.0A GB201608342D0 (en) | 2016-05-12 | 2016-05-12 | Formulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201707615D0 GB201707615D0 (en) | 2017-06-28 |
| GB2551639A true GB2551639A (en) | 2017-12-27 |
Family
ID=56320280
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB1608342.0A Ceased GB201608342D0 (en) | 2016-05-12 | 2016-05-12 | Formulation |
| GB1707615.9A Withdrawn GB2551639A (en) | 2016-05-12 | 2017-05-12 | Formulation |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB1608342.0A Ceased GB201608342D0 (en) | 2016-05-12 | 2016-05-12 | Formulation |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB201608342D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170203340A1 (en) * | 2014-07-28 | 2017-07-20 | General Electric Company | Rapid cleaning method for ultrapure water piping system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0808212A1 (en) * | 1995-02-01 | 1997-11-26 | HENKEL-ECOLAB GmbH & CO. OHG | Method of cleaning membrane filters |
| US5821211A (en) * | 1993-04-05 | 1998-10-13 | Active Environmental Technologies, Inc. | De-scaling solution and methods of use |
| JP2000319695A (en) * | 1999-05-12 | 2000-11-21 | Daisan Kogyo Kk | Beer dispenser cleaning aqueous solution |
| US20130000681A1 (en) * | 2008-09-19 | 2013-01-03 | Birko Corporation | Method of cleaning beer kegs, brewery, winery and dairy process equipment |
| CN105505627A (en) * | 2014-09-25 | 2016-04-20 | 武汉凌科达科技有限公司 | Preparation method of scale remover |
-
2016
- 2016-05-12 GB GBGB1608342.0A patent/GB201608342D0/en not_active Ceased
-
2017
- 2017-05-12 GB GB1707615.9A patent/GB2551639A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5821211A (en) * | 1993-04-05 | 1998-10-13 | Active Environmental Technologies, Inc. | De-scaling solution and methods of use |
| EP0808212A1 (en) * | 1995-02-01 | 1997-11-26 | HENKEL-ECOLAB GmbH & CO. OHG | Method of cleaning membrane filters |
| JP2000319695A (en) * | 1999-05-12 | 2000-11-21 | Daisan Kogyo Kk | Beer dispenser cleaning aqueous solution |
| US20130000681A1 (en) * | 2008-09-19 | 2013-01-03 | Birko Corporation | Method of cleaning beer kegs, brewery, winery and dairy process equipment |
| CN105505627A (en) * | 2014-09-25 | 2016-04-20 | 武汉凌科达科技有限公司 | Preparation method of scale remover |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170203340A1 (en) * | 2014-07-28 | 2017-07-20 | General Electric Company | Rapid cleaning method for ultrapure water piping system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201608342D0 (en) | 2016-06-29 |
| GB201707615D0 (en) | 2017-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |