GB2573007A - Improvements relating to cleaning - Google Patents
Improvements relating to cleaning Download PDFInfo
- Publication number
- GB2573007A GB2573007A GB1806416.2A GB201806416A GB2573007A GB 2573007 A GB2573007 A GB 2573007A GB 201806416 A GB201806416 A GB 201806416A GB 2573007 A GB2573007 A GB 2573007A
- Authority
- GB
- United Kingdom
- Prior art keywords
- composition
- acid
- suitably
- cleaning
- composition comprises
- 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- Withdrawn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
- 238000004140 cleaning Methods 0.000 title claims abstract description 152
- 230000006872 improvement Effects 0.000 title description 5
- 239000000203 mixture Substances 0.000 claims abstract description 372
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 140
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical class CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims abstract description 79
- 235000015165 citric acid Nutrition 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 43
- 235000014655 lactic acid Nutrition 0.000 claims abstract description 42
- 235000011054 acetic acid Nutrition 0.000 claims abstract description 41
- 150000002978 peroxides Chemical class 0.000 claims abstract description 40
- 239000002253 acid Substances 0.000 claims abstract description 38
- 230000000249 desinfective effect Effects 0.000 claims abstract description 38
- 150000007513 acids Chemical class 0.000 claims abstract description 34
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003381 stabilizer Substances 0.000 claims abstract description 25
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 19
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- 239000001361 adipic acid Substances 0.000 claims abstract description 11
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 11
- 239000001508 potassium citrate Substances 0.000 claims abstract description 10
- 229960002635 potassium citrate Drugs 0.000 claims abstract description 10
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims abstract description 10
- 235000011082 potassium citrates Nutrition 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 159000000011 group IA salts Chemical class 0.000 claims abstract description 5
- 150000005323 carbonate salts Chemical class 0.000 claims abstract description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 114
- 239000007788 liquid Substances 0.000 claims description 54
- 239000004310 lactic acid Substances 0.000 claims description 39
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 17
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 16
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 16
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 16
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 16
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 16
- 239000011976 maleic acid Substances 0.000 claims description 16
- 239000001630 malic acid Substances 0.000 claims description 16
- 235000011090 malic acid Nutrition 0.000 claims description 16
- 239000011975 tartaric acid Substances 0.000 claims description 16
- 235000002906 tartaric acid Nutrition 0.000 claims description 16
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 16
- 150000001447 alkali salts Chemical class 0.000 claims description 2
- 235000013361 beverage Nutrition 0.000 abstract description 61
- 150000001243 acetic acids Chemical class 0.000 abstract 2
- 229960004106 citric acid Drugs 0.000 description 34
- 239000000243 solution Substances 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 26
- 239000012528 membrane Substances 0.000 description 26
- 238000012360 testing method Methods 0.000 description 15
- 235000013405 beer Nutrition 0.000 description 14
- 230000008901 benefit Effects 0.000 description 14
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 13
- 235000017557 sodium bicarbonate Nutrition 0.000 description 13
- 239000001509 sodium citrate Substances 0.000 description 13
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 13
- 244000005700 microbiome Species 0.000 description 12
- -1 peracid compound Chemical class 0.000 description 11
- 238000005054 agglomeration Methods 0.000 description 8
- 229960000250 adipic acid Drugs 0.000 description 7
- 230000002776 aggregation Effects 0.000 description 7
- 150000001735 carboxylic acids Chemical class 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 150000001768 cations Chemical class 0.000 description 6
- 230000009931 harmful effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 235000019832 sodium triphosphate Nutrition 0.000 description 6
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000007865 diluting Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- 150000003627 tricarboxylic acid derivatives Chemical class 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 241001148470 aerobic bacillus Species 0.000 description 3
- 150000001734 carboxylic acid salts Chemical group 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 3
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- ZBJVLWIYKOAYQH-UHFFFAOYSA-N naphthalen-2-yl 2-hydroxybenzoate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=C(C=CC=C2)C2=C1 ZBJVLWIYKOAYQH-UHFFFAOYSA-N 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 235000011083 sodium citrates Nutrition 0.000 description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- YKYIFUROKBDHCY-ONEGZZNKSA-N (e)-4-ethoxy-1,1,1-trifluorobut-3-en-2-one Chemical group CCO\C=C\C(=O)C(F)(F)F YKYIFUROKBDHCY-ONEGZZNKSA-N 0.000 description 2
- QFMDFTQOJHFVNR-UHFFFAOYSA-N 1-[2,2-dichloro-1-(4-ethylphenyl)ethyl]-4-ethylbenzene Chemical compound C1=CC(CC)=CC=C1C(C(Cl)Cl)C1=CC=C(CC)C=C1 QFMDFTQOJHFVNR-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000001210 attenuated total reflectance infrared spectroscopy Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 230000009920 chelation Effects 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229960002163 hydrogen peroxide Drugs 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003019 stabilising effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000003442 weekly effect Effects 0.000 description 2
- 238000004483 ATR-FTIR spectroscopy Methods 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 238000005102 attenuated total reflection Methods 0.000 description 1
- 238000013124 brewing process Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229960002303 citric acid monohydrate Drugs 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000007983 food acid Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- YVSCCMNRWFOKDU-UHFFFAOYSA-N hexanedioic acid Chemical compound OC(=O)CCCCC(O)=O.OC(=O)CCCCC(O)=O YVSCCMNRWFOKDU-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000009771 scanning electron microscopy-energy dispersive analysis Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- OQDNHYVNKSVTFF-UHFFFAOYSA-K trisodium;cyanoformate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C#N.[O-]C(=O)C#N.[O-]C(=O)C#N OQDNHYVNKSVTFF-UHFFFAOYSA-K 0.000 description 1
- 238000011179 visual inspection Methods 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
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
-
- 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
- A01N37/36—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 at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
-
- 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
-
- 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
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
-
- 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
-
- 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
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3905—Bleach activators or bleach catalysts
- C11D3/3907—Organic 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
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3905—Bleach activators or bleach catalysts
- C11D3/3907—Organic compounds
- C11D3/391—Oxygen-containing 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
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3937—Stabilising agents
-
- 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
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3937—Stabilising agents
- C11D3/394—Organic 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
- C11D3/3945—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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
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- 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
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- 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
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- C11D3/2079—Monocarboxylic acids-salts thereof
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- 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
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2082—Polycarboxylic acids-salts thereof
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- 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
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
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Abstract
A kit for cleaning and disinfecting apparatus, preferably beverage dispensing apparatus, the kit comprising a first composition comprising a peroxide and a second composition comprising at least two acids selected from citric, tartaric, malic, maleic, lactic and acetic acids. Preferably the second composition comprises citric acid or both lactic and acetic acids. The composition may preferably comprise three acids. The peroxide may be hydrogen peroxide. The first composition may also contain a stabilizer, the stabilizer may be a carboxylic acid and/or a salt thereof, it may comprise adipic acid or may be a mixture of potassium citrate and citric acid. The second composition may also comprise a salt of a carboxylic acid and/or an alkaline salt, preferable a citric acid salt and/or a carbonate salt. The second composition may also comprise a surfactant. Claims are also included to a method of cleaning and disinfecting apparatus by contacting with a composition comprising a mixture of the two above compositions. Further claims relate to combined composition of compositions one and two. Final claims relate to a composition of hydrogen peroxide and adipic acid and a composition of citric, acetic and lactic acids.
Description
Improvements Relating to Cleaning
Field
The present invention relates to cleaning compositions for the cleaning of apparatus, for example beverage delivery systems, and to related methods and kits for cleaning said apparatus. In particular the invention relates to compositions for cleaning beer dispensing systems.
Background
Beverage delivery systems for dispensing alcoholic beverages such as beer and wine comprise tubes (known as lines) connecting the keg or barrel containing the beverage to be dispensed to a dispensing mechanism (tap) located remotely from the keg or barrel, for example at a serving area or bar. Some such beverage delivery systems are pressurised by gas, for example carbon dioxide or nitrogen. Other, older beverage delivery systems may work via a syphon mechanism, which draws the beverage up via a hand operated pump.
Beverage delivery systems of the types described above are commonly used in bars, public houses, restaurants, entertainment venues and other refreshment facilities.
Most beverages contain microorganisms such as algae, bacteria and fungi. They also contain compounds which provide nutrients and energy sources which promote growth of said microorganisms. In addition, known methods ofcleaning beverage delivery systems, such as chlorination or detergent products, may increase the availability of nutrient compounds. Therefore such beverage delivery systems can accumulate deposits of material from the dispensed beverage which can harbour said microorganisms, encourage their growth and adversely affect the flavour and quality of the beverage being dispensed. This problem is particularly acute in delivery systems used to dispense beer where “beer stone” (calcium oxalate deposits formed by reaction of oxalic acid produced during a brewing process and calcium from water hardness) and other deposits can readily accumulate and can harbour yeast, mould, bacteria and other material which affect the quality and safety of the beer. Therefore regular cleaning of beverage delivery systems, in particular the lines, is required to remove the deposits from the system and maintain the flavour and quality of the beverages dispensed by the system.
Known cleaning methods involve the use of harsh, fast-working chemicals, such as highly alkaline phosphate or silicate products, in order to minimise the amount of time the cleaning operation takes. Such harsh chemicals may cause damage to the beverage delivery system, for example to seals and connectors, may be inherently toxic and so require careful handling and may be harmful to the environment when discharged into wastewater systems.
To carry out cleaning of the beverage delivery system, the dispensing lines are disconnected from the keg or barrel containing the beverage, any beverage remaining in the lines is discarded and the lines are then connected to a cleaning tank to allow a cleaning solution containing the cleaning chemicals to be passed through. The lines are then flushed with water to remove the cleaning solution from the lines. Various types of pumps and valves are available to pump and control the flow of the cleaning solution and water used for rinsing. Apparatus which create a pulsed flow in the beer lines to help dislodge sediment are also known.
The problems associated with the use of harsh chemicals in cleaning solutions to clean the lines of beverage delivery systems are particularly acute where the distance from the location of the kegs or barrels to the serving area is relatively large and where many different beverages are dispensed at said serving area. Where the distance from the location of the kegs or barrels to the serving area is relatively large, relatively long the lines are required and these generally have a larger diameter than shorter lines in order to decrease liquid flow resistance. Therefore the volume inside such lines is larger than in normal sized lines and so the amount of cleaning solution required to clean the lines is increased. Also, the amount of cleaning solution required to clean a beverage delivery system increases with the number of different dispensing lines used to dispense different beverages at a single serving area. Therefore beverage delivery systems may require many litres of cleaning solution every time the lines need to be cleaned.
The overall cost in time and cleaning solution of the cleaning of a beverage delivery system, and the amount of harmful waste produced, is also related to the frequency with which the cleaning has to be carried out to maintain adequate cleanliness and beverage quality. Known methods of cleaning beverage delivery systems are typically carried out weekly.
Summary of the Invention
Due to the problems associated with known cleaning solutions for cleaning beverage delivery systems discussed herein and elsewhere, the inventors have identified a need for improved cleaning solutions for beverage delivery systems which can provide improved methods of cleaning beverage delivery systems.
It is one aim of the present invention, amongst others, to provide a cleaning composition, kit and/or method that addresses at least one disadvantage of the prior art, whether identified here or elsewhere, or to provide an alternative to existing cleaning compositions, kits and/or methods. For instance it may be an aim of the present invention to provide a cleaning composition, kit and/or method which allows less frequent cleaning and/or produces less harmful waste than known methods.
According to aspects of the present invention, there is provided a kit for cleaning and disinfecting an apparatus, a method of cleaning and disinfecting an apparatus and cleaning compositions as set forth in the appended claims. Other features of the invention will be apparent from the dependent claims, and the description which follows.
According to a first aspect of the present invention, there is provided a kit for cleaning and disinfecting an apparatus, the kit comprising a first composition and a second composition;
wherein the first composition comprises a peroxide; and wherein the second composition comprises at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
The kit comprises two separate compositions - the first composition and the second composition. Suitably the first composition and the second composition are separately packaged. The first composition and the second composition may be provided in separate containers, suitably sealed containers. Alternatively the first composition and the second composition may be provided in separate storage volumes within a single package, suitably separate sealed storage volumes within the single package. Suitably the first composition and the second composition are stable on storage under ambient conditions and may be considered “shelf stable”. Suitably the kit does not require any special storage or handling conditions in addition to being stored under ambient conditions. Suitably the kit can be safely transported without special handling conditions being required.
The first and second compositions provided in the kit are intended to be combined before use to produce a third composition. The third composition may be referred to as an active composition. Suitably the first composition and the second composition react with each other when they are combined to produce the third composition. Suitably the third composition comprises at least one reaction product of a component of the first composition and a component ofthe second composition. Suitably the third composition comprises a plurality of reaction products of one or more components of the first composition and one or more components of the second composition. Suitably, when the first composition and the second composition are combined, at least one peracid compound is produced. Suitably the third composition comprises at least one peracid compound, suitably produced by reaction of the peroxide of the first composition with an acid of the second composition. Suitably the third composition comprises a plurality of peracid compounds, suitably produced by reaction ofthe peroxide ofthe first composition with more than one acid ofthe second composition.
The third composition produced by the combination of the first composition and the second composition may not be stable on storage under ambient conditions and may not be considered “shelf stable”. The instability ofthe third composition may necessitate the provision of the kit comprising the first composition and the second composition as separate compositions intended for combination before use. Suitably the third composition is sufficiently stable during the period of a typical cleaning operation of an apparatus, for example stable for at least 30 minutes, suitably for at least an hour or for at least two hours.
Suitably the first composition is an aqueous composition. Suitably the second composition is an aqueous composition. Suitably the third composition is an aqueous composition. Suitably the first, second and third compositions are aqueous compositions.
Suitably on combination of the first composition and the second composition, the third composition is diluted in water before use.
The kit of this first aspect is intended and suitable for cleaning and disinfecting an apparatus. Cleaning may refer to the removal of visible deposits, dirt and debris from the apparatus. Disinfecting may refer to the removal and/or killing of microorganisms in the apparatus. Removal and/or killing of microorganisms may refer to reducing the number of detectable active microorganisms to a level considered acceptable, for example a level which means no viable colonies of microorganisms remain in the apparatus which might be able to proliferate after the cleaning/disinfecting process. Cleaning and disinfecting may include combatting biofilm present in the apparatus. The term “biofilm” refers to both a monocultured and a polymicrobial community of microorganisms enclosed in an extracellular polymeric matrix, and attached to a biotic or an abiotic surface. The kit of this first aspect may be useful in treating or combatting biofilms, for example disrupting and/or dispersing biofilms and providing an antimicrobial action on the microbes living on and within said biofilm and/or breaking down the biofilm. Suitably the kit removes any biofilm present in the apparatus.
The kit of this first aspect is intended and suitable for cleaning and disinfecting an apparatus, for example a food or beverage storage or delivery apparatus. In some embodiments, the apparatus is a beverage delivery system, for example a beverage delivery system adapted to deliver beer or wine from a storage area to a serving area through tubing (known as lines). Suitably the beverage delivery system is a beer delivery system.
The inventors have found that the kit of this first aspect provides, on combination of the first composition and the second composition, a third composition which is effective in cleaning and disinfecting apparatus such as beverage delivery systems, especially beer and wine delivery systems. The third (cleaning) composition is non-corrosive, unlike known cleaning compositions comprising sodium hydroxide, potassium hydroxide, trisodium nitriloacetate or sodium hypochlorite, and its use does not result in environmentally harmful waste which requires careful disposal or treatment. The effectiveness of the third composition advantageously allows the frequency ofcleaning of the apparatus to be reduced because the thorough cleaning and disinfection provided by the third composition means the apparatus stays clean and sanitary for longer than after the use of known cleaning compositions. This is particularly advantageous when there is a cost associated with the downtime of the apparatus during a cleaning operation.
Suitably the first and second compositions are substantially free of chlorine, suitably substantially free of halogens. Therefore the third composition is substantially free of chlorine, suitably substantially free of halogens.
Suitably the first and second compositions are free of chlorine, suitably free of halogens. Therefore the third composition is free of chlorine, suitably free of halogens.
The kit of this first aspect is particularly effective at removing “beer stone”, yeast, mould, bacteria and other agglomerations in beer delivery systems.
Without being bound by theory, the inventors believe that the combination of the first composition and the second composition provide a third composition comprising peracid compounds for cleaning and disinfecting the apparatus and comprising acid complexes for chelating metal cations in the water present in the cleaning composition and the apparatus during cleaning. Chelation of said metal cations “softens” the water which is believed to increase the efficacy of the peracid compounds in cleaning and disinfecting the apparatus. Chelation of said metals is also believed to break-up and remove agglomerations comprising metal cations within the apparatus to be cleaned.
The mixture of acids contained in the second composition is also believed to provide, in the third composition, such a mixture of acids which is effective at removing visible deposits, dirt and debris from the apparatus during cleaning. Such visible deposits, dirt and debris may otherwise reduce the effectiveness of the peracid compounds and therefore the mixture of acids may provide an advantageous improvement in cleaning and disinfecting compared to compositions lacking such a mixture of acids.
The first composition comprises a peroxide. The peroxide is suitably hydrogen peroxide (H2O2).
Suitably the first composition comprises a stabiliser, suitably for stabilising the peroxide. In some known cleaning/disinfecting solutions comprising peroxides and not comprising such a stabiliser, the addition of surfactants and/or carboxylic acids to provide a more effective cleaning/disinfecting solution would instead deactivate the peroxide and provide a less effective cleaning/disinfecting solution. The kit of this first aspect may provide the advantage over such known peroxide solutions that surfactants and/or carboxylic acids can be combined with the peroxide/stabiliser composition to provide an active cleaning/disinfecting composition which is more effective than known peroxide solutions.
Suitably the first composition comprises at least 0.5 wt% peroxide, suitably at least 1 wt%, for example at least 2 wt%.
Suitably the first composition comprises up to 15wt% peroxide, suitably up to 10wt%, for example up to 8 wt% or up to 6 wt%.
Suitably the first composition comprises from 1 to 10 wt% peroxide, suitably from 1 to 8 wt%, for example from 2 to 6 wt% or from 3 to 5 wt%.
The stabiliser is suitably an acid, suitably a carboxylic acid or a phosphoric acid or salt thereof. Suitably the stabiliser comprises a carboxylic acid and/or a salt of a carboxylic acid. Suitably the stabiliser is a carboxylic acid salt. Suitably the stabiliser is a citrate salt, for example potassium citrate. In some embodiments the stabiliser may be adipic acid (hexanedioic acid).
Suitably the first composition comprises at least 0.05 wt% stabiliser, suitably at least 0.1 wt%, suitably at least 0.2 wt%.
Suitably the first composition comprises up to 2.0 wt% stabiliser, suitably up to 1.0 wt%, suitably up to 0.5 wt%.
Suitably the first composition comprises from 0.05 to 1.0 wt% stabiliser, suitably from 0.1 to
0.5 wt%, suitably from 0.2 to 0.3 wt%.
In some embodiments, the stabiliser is a mixture of a carboxylic acid salt and a carboxylic acid, suitably a mixture of a carboxylic acid salt and the corresponding carboxylic acid. Suitably the stabiliser is a mixture of potassium citrate and citric acid.
In embodiments wherein the first composition comprises a carboxylic acid, suitably the first composition comprises at least 0.05 wt% carboxylic acid, suitably at least 0.1 wt%, suitably at least 0.2 wt%.
Suitably the first composition comprises up to 3.0 wt% carboxylic acid, suitably up to 2.0 wt%, suitably up to 1.0 wt%.
Suitably the first composition comprises from 0.1 to 2.0 wt% carboxylic acid, suitably from 0.15 to 1.0 wt%, suitably from 0.25 to 0.75 wt%.
Suitably the first composition is a homogeneous liquid composition. Suitably the first composition is an aqueous composition. Suitably the first composition comprises at least 80 wt% water, suitably at least 85 wt% water, suitably at least 90 wt%.
Suitably the first composition is acidic. Suitably the first composition has a pH in the range 3 to 6, suitably 4 to 5.
Suitably the first composition is an aqueous composition comprising:
from 1 and 10 wt% hydrogen peroxide;
from 0.05 to 1.0 wt% potassium citrate; and from 0.1 to 2.0 wt% citric acid.
Suitably the first composition is an aqueous composition comprising:
from 1 to 8 wt% hydrogen peroxide;
from 0.1 to 0.5 wt% potassium citrate; and from 0.25 to 0.75 wt% citric acid.
Suitably the first composition is an aqueous composition consisting essentially of hydrogen peroxide, potassium citrate, citric acid and water, in the amounts described above.
Suitably the first composition is an aqueous composition consisting of hydrogen peroxide, potassium citrate, citric acid and water, in the amounts described above.
In some embodiments, the stabiliser may be a dicarboxylic acid, suitably adipic acid. In such embodiments, the first composition suitably comprises at least 0.0001 wt% stabiliser, suitably at least 0.0005 wt%, suitably at least 0.001 wt%.
Suitably the first composition comprises up to 0.02 wt% stabiliser, suitably up to 0.01 wt%, suitably up to 0.005 wt%.
Suitably the first composition comprises from 0.0001 to 0.01 wt% stabiliser, suitably from 0.001 to 0.005 wt%, suitably from 0.001 to 0.003 wt%.
In such embodiments, the first composition is an aqueous composition comprising:
from 1 and 10 wt% hydrogen peroxide; and from 0.0001 to 0.01 wt% adipic acid.
Suitably the first composition is an aqueous composition comprising:
from 1 to 8 wt% hydrogen peroxide;
from 0.001 to 0.005 wt% adipic acid.
Suitably the first composition is an aqueous composition consisting essentially of hydrogen peroxide, adipic acid and water, in the amounts described above.
Suitably the first composition is an aqueous composition consisting of hydrogen peroxide, adipic acid and water, in the amounts described above.
The second composition comprises at least two different acids. Suitably the at least two different acids are both carboxylic acids. Suitably the second composition comprises at least two different carboxylic acids which are food acids. Suitably the second composition comprises at least two different carboxylic acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
Suitably, the second composition comprises at least three acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
Suitably the second composition comprises a tricarboxylic acid, for example citric acid. Suitably the second composition comprises citric acid. Therefore, suitably one of the at least two acids of the second composition is citric acid.
Suitably the second composition comprises an alpha-hydroxy carboxylic acid, for example lactic acid. Suitably the second composition comprises lactic acid. Therefore, suitably one of the at least two acids of the second composition is lactic acid.
Suitably the second composition comprises an aliphatic carboxylic acid, for example acetic acid. Suitably the second composition comprises acetic acid. Therefore, suitably one of the at least two acids of the second composition is acetic acid.
Suitably the second composition comprises lactic acid and acetic acid. Therefore, suitably two of the at least two carboxylic acids of the second composition are lactic acid and acetic acid.
Suitably the second composition comprises a tricarboxylic acid, an alpha-hydroxy carboxylic acid and an aliphatic carboxylic acid. Suitably the second composition comprises citric acid, lactic acid and acetic acid. Therefore, suitably the at least two acids of the second composition are provided by citric acid, lactic acid and acetic acid. The inventors have found that this combination of carboxylic acids provides a particularly effective cleaning and disinfecting composition, when combined with the first composition.
Suitably the second composition comprises at least 0.25 wt% of the acids, suitably at least 1.0 wt%, suitably at least 5.0 wt%.
Suitably the second composition comprises up to 50 wt% of the acids, suitably up to 40 wt%, suitably up to 30 wt%.
Suitably the second composition comprises at least 5 wt% of a tricarboxylic acid, suitably at least 10 wt%, suitably at least 15 wt%.
Suitably the second composition comprises up to 35 wt% of a tricarboxylic acid, suitably up to 30 wt%, suitably up to 25 wt%.
Suitably the second composition comprises at least 5 wt% citric acid, suitably at least 10 wt%, suitably at least 15 wt%.
Suitably the second composition comprises up to 35wt% citric acid, suitably up to 30 wt%, suitably up to 25 wt%.
Suitably the second composition comprises at least 0.5 wt% of an alpha-hydroxy carboxylic acid, suitably at least 1.0 wt%, suitably at least 1.5 wt%.
Suitably the second composition comprises up to 10 wt% of an alpha-hydroxy carboxylic acid, suitably up to 8 wt%, suitably up to 6 wt%.
Suitably the second composition comprises at least 0.5 wt% lactic acid, suitably at least 1.0 wt%, suitably at least 1.5 wt%.
Suitably the second composition comprises up to 10wt% lactic acid, suitably up to 8 wt%, suitably up to 6 wt%.
Suitably the second composition comprises at least 0.5 wt% of an aliphatic carboxylic acid, suitably at least 1.0 wt%, suitably at least 2.0 wt%.
Suitably the second composition comprises up to 10wt% of an aliphatic carboxylic acid, suitably up to 8 wt%, suitably up to 6 wt%.
Suitably the second composition comprises at least 0.5 wt% acetic acid, suitably at least 1.0 wt%, suitably at least 2.0 wt%.
Suitably the second composition comprises up to 10wt% acetic acid, suitably up to 8wt%, suitably up to 6 wt%.
Suitably the second composition is a homogeneous liquid composition. Suitably the second composition is an aqueous composition. Suitably the first composition comprises at least 40 wt% water, suitably at least 50 wt% water, suitably at least 60 wt%.
Suitably the first composition is acidic. Suitably the first composition has a pH in the range 3 to 6, suitably 3 to 4.
Suitably the second composition is an aqueous composition comprising:
from 10 to 35 wt% citric acid;
from 1 to 10 wt% acetic acid; and from 1 to 8 wt% lactic acid.
Suitably the second composition is an aqueous composition consisting essentially of:
from 10 to 35 wt% citric acid;
from 1 to 10 wt% acetic acid;
from 1 to 8 wt% lactic acid; and water.
Suitably the second composition comprises a salt of a carboxylic acid and/or an alkaline salt. The inventors have found that such salts may stabilise peracid compounds formed when the first composition and the second composition are combined to form the third composition, resulting in an improvement in the efficacy of said third composition in a method of cleaning and/or disinfecting. In particular, peracids derived from citric acid and/or lactic acid are known to be unstable and benefit from the stabilisation provided by the salt of a carboxylic acid and/or an alkaline salt. Furthermore, the inventors have found that the salt of a carboxylic acid and/or an alkaline salt prevent re-agglomeration of metal cations within the apparatus to be cleaned, once the metal ions have been taken up by said third composition.
Suitably the salt of a carboxylic acid is a citric acid salt and the alkali salt is a carbonate salt. Suitably the second composition comprises both a citric acid salt and a carbonate salt. Suitably the second composition comprises sodium citrate and sodium hydrogen carbonate. The inventors have found the combination of sodium citrate and sodium hydrogen carbonate to be particularly effective in stabilising the peracid compounds formed on combination of the first composition and the second composition and therefore improve the efficacy of the kit in cleaning and/or disinfecting.
Suitably the second composition comprises at least 0.1 wt% sodium hydrogen carbonate, suitably at least 0.25 wt%, suitably at least 1.0 wt%.
Suitably the second composition comprises up to 10.0wt% sodium hydrogen carbonate, suitably up to 5.0 wt%, suitably up to 3.0 wt%.
Suitably the second composition comprises at least 0.1 wt% sodium citrate, suitably at least 0.2 wt%, suitably at least 0.5 wt%.
Suitably the second composition comprises up to 5.0 wt% sodium citrate, suitably up to 3.0 wt%, suitably up to 2.0 wt%.
Suitably the second composition is an aqueous composition comprising:
from 10 to 35 wt% citric acid;
from 1 to 10 wt% acetic acid;
from 1 to 8 wt% lactic acid;
from 0.1 to 5.0 wt% sodium hydrogen carbonate; and/or from 0.1 to 3.0 wt% sodium citrate.
Suitably the second composition is an aqueous composition comprising:
from 20 to 25 wt% citric acid;
from 3 to 8 wt% acetic acid;
from 2 to 5 wt% lactic acid;
from 1.0 to 3.0 wt% sodium hydrogen carbonate; and/or from 0.5 to 2.5 wt% sodium citrate.
Suitably the second composition is an aqueous composition consisting essentially of citric acid, acetic acid, lactic acid, sodium hydrogen carbonate, sodium citrate and water, in the amounts described above.
In some embodiments, the second composition may comprise at least 0.01 wt% sodium hydrogen carbonate, suitably at least 0.05 wt%, suitably at least 0.1 wt%.
Suitably the second composition comprises up to 1.0 wt% sodium hydrogen carbonate, suitably up to 0.5 wt%, suitably up to 0.3 wt%.
In such embodiments, the second composition suitably comprises at least 0.01 wt% sodium citrate, suitably at least 0.05 wt%, suitably at least 0.1 wt%.
Suitably the second composition comprises up to 1.0 wt% sodium citrate, suitably up to 0.5 wt%, suitably up to 0.3 wt%.
In such embodiments, the second composition is an aqueous composition comprising:
from 10 to 35 wt% citric acid;
from 1 to 10 wt% acetic acid;
from 1 to 8 wt% lactic acid;
from 0.01 to 1.0 wt% sodium hydrogen carbonate; and/or from 0.01 to 1.0 wt% sodium citrate.
In such embodiments, the second composition is an aqueous composition comprising:
from 20 to 25 wt% citric acid;
from 2 to 8 wt% acetic acid;
from 2 to 5 wt% lactic acid;
from 0.1 to 0.5 wt% sodium hydrogen carbonate; and/or from 0.1 to 0.5 wt% sodium citrate.
Suitably the second composition is an aqueous composition consisting essentially of citric acid, acetic acid, lactic acid, sodium hydrogen carbonate, sodium citrate and water, in the amounts described above.
In some embodiments, the second composition comprises a surfactant. The presence of a surfactant may advantageously improve the ability of the cleaning composition to contact, break-up, remove and sanitise agglomerations inside the apparatus to be cleaned and disinfected. The surfactant may be a non-ionic surfactant, for example an alkoxylation product of a fatty alcohol (an alcohol ethoxylate), suitably an ethoxylation product of a fatty alcohol. A suitable alcohol ethoxylate may be selected from any one or more of Berol 260 (Cg-n alcohol + 4 ethoxy units), Berol 266 (Cg-n alcohol + 5.5 ethoxy units), Berol 840 (C8 + 4 ethoxy units), Ethylan 1003 (C10 alcohol + 3.5 ethoxy units) and Ethylan 1005 (C10 + 5 ethoxy units).
Suitably the second composition comprises at least 0.05 wt% surfactant, suitably at least 0.1 wt%, for example at least 0.2 wt%.
Suitably the second composition comprises up to 5 wt% surfactant, suitably up to 3 wt%, for example up to 2 wt% or up to 1 wt%.
Suitably the second composition is an aqueous composition consisting essentially of citric acid, acetic acid, lactic acid, sodium hydrogen carbonate, sodium citrate, a surfactant and water, in the amounts described above.
The first composition and the second composition of the kit are intended to be combined before use to produce a third composition and it is this third composition which is suitable for cleaning and disinfecting the said apparatus. Suitably said third composition is an aqueous composition. Suitably said third composition is acidic. Suitably said third composition has a pH in the range 3 to 5, suitably 3 to 4. Suitably said third composition is diluted in water before use in cleaning and disinfecting said apparatus.
Suitably the kit of this first aspect comprises an approximately equal volume of the first composition and the second composition. Suitably the first composition and the second composition are combined in a ratio of approximately 1:1 to provide said third composition. Suitably the entire contents of the packaging separately containing the first composition and the entire contents of the packaging separately containing the second composition are intended to be combined to provide said third composition, for use in said cleaning and disinfecting of said apparatus.
Suitably the first composition and the second composition are miscible. Suitably the first composition and the second composition completely mix and do not subsequently separate or produce a precipitate after mixing. Suitably said third composition is a homogeneous liquid composition.
According to a second aspect ofthe present invention, there is provided a method ofcleaning and disinfecting an apparatus, the method comprising contacting said apparatus with a liquid cleaning composition comprising a peroxide and at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
The liquid cleaning composition used in the method of this second aspect may have any ofthe features and advantages ofthe third composition described in relation to the first aspect. The liquid cleaning composition is suitably formed from a kit according to the first aspect.
The liquid cleaning composition is described as comprising a peroxide and at least two acids. By this we mean that these compounds were added to form the liquid cleaning composition. As described above, these compounds react with each other to form peracid compounds. Therefore the liquid cleaning composition may not comprise any actual peroxide or the at least two acids in their original form. Therefore the liquid composition may be alternatively defined as comprising reaction products ofthe peroxide and the at least two acids, i.e. as comprising peracid compounds.
Suitably the method of this second aspect comprises a step of combining a first composition and a second to form the liquid cleaning composition, wherein the first composition comprises the peroxide and the second composition comprises the at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
Suitably the first composition and the second composition may have any of the features and advantages of the first composition and the second composition described in relation to the first aspect.
The first composition and the second composition may be combined in a ratio of from 1:4 to 4:1, suitably in a ratio of from 1:3 to 3:1, suitably in a ratio of from 1:2 to 2:1, for example in a ratio of from 2:3 to 3:2. Suitably the first composition and the second composition are combined in a ratio of approximately 1:1.
The method of this second aspect may comprise a step of diluting in water the liquid cleaning composition before contacting the apparatus with the liquid cleaning composition to carry out the cleaning and disinfecting. The step of diluting in water may be carried out in a suitable holding vessel. The step of diluting in water the liquid cleaning composition may involve combining the liquid cleaning composition with water in a ratio of from 1:2 to 1:200, suitably a ratio of from 1:5 to 1:20 or in some embodiments in a ratio of 1:50 to 1:150, suitably in a ratio of approximately 1:99. The step of diluting in water the liquid cleaning composition may provide a liquid cleaning composition having from 0.1 to 1 wt% of peroxide (based on the amount of peroxide provided in the first composition).
The apparatus cleaned and disinfected by the method of this second aspect may be a food or beverage delivery system, suitably a beverage delivery system.
The method of this second aspect involves contacting the apparatus with the liquid cleaning composition. In embodiments wherein the apparatus is a beverage delivery system, the method may involve, after dilution, a step of passing the liquid cleaning composition from the holding vessel into the beverage delivery system, suitably to fill the lines and pumping equipment of the beverage delivery system. This step may leave some of the liquid cleaning composition in the holding vessel.
The liquid cleaning composition may then be kept in the beverage delivery system for a period of time sufficient for cleaning and disinfecting to be carried out by the action of the liquid cleaning composition. Suitably the liquid cleaning composition is kept in the beverage delivery system for at least 10 minutes, suitably at least 20 minutes. Suitably the liquid cleaning composition is kept in the beverage delivery system for up to 1 hour, suitably up to 45 minutes, for example approximately 30 minutes.
Any liquid cleaning composition remaining in the holding vessel may then be passed from the holding vessel into the beverage delivery system, whilst removing some of the liquid cleaning composition from the beverage delivery system to a collection vessel. This step may advantageously dislodge any agglomerations (for example agglomerations of metal cations, dirt, debris and/or biofilms) and/or further penetrate said agglomerations and/or further disinfect the beverage delivery system. The liquid cleaning composition may again be kept in the beverage system for a period of time sufficient for cleaning and disinfecting to be carried out by the action of the liquid cleaning composition. Suitably the liquid cleaning composition is kept in the beverage delivery system for at least 10 minutes, suitably for at least 20 minutes. Suitably the liquid cleaning composition is kept in the beverage delivery system for up to 1 hour, suitably up to 45 minutes, for example approximately 30 minutes.
The liquid cleaning composition is then removed from the beverage delivery system and into the collection vessel. The beverage delivery system is then optionally flushed with water to remove any traces of the liquid cleaning composition. The beverage delivery system is then brought back into normal use.
The inventors have found that the method of this second aspect completely removes all visible deposits, dirt and debris, including biofilms and agglomerations of metal cations, from the beverage delivery system. The method of this second aspect also reduces the number of microorganisms in the beverage delivery system to levels which cannot be detected in standard tests.
The method of this first aspect may be repeated after a period of time of at least one week, suitably at least two weeks, suitably at least three weeks, and of up to 8 weeks, suitably up to 6 weeks, suitably approximately 4 weeks.
Known methods for cleaning and disinfecting beverage delivery systems have to be carried out weekly in order to maintain the quality and safety of the beverages dispensed by the system. The method of this second aspect may need only be carried out every month in order to maintain the quality and safety of the beverages dispensed by the system, due to the increased efficacy of the liquid cleaning composition compared to known cleaning compositions.
The used liquid cleaning composition collected in the collection vessel may then be disposed of. The used liquid cleaning composition is not environmentally harmful and is suitably biodegradable. Therefore the used liquid cleaning composition can be disposed of in a normal wastewater disposal system, avoiding any harmful effects produced by known cleaning compositions and avoiding the expense of specialist disposal measures.
Other apparatus may be cleaned and disinfected by similar processes, adapted to account for the particular function of the apparatus in question.
According to a third aspect of the present invention, there is provided a liquid cleaning composition comprising a peroxide and at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
The cleaning composition of this third aspect may have any of the features and advantages of the third composition described in relation to the first aspect and/or the liquid cleaning composition described in relation to the second aspect.
According to a fourth aspect of the present invention, there is provided a liquid cleaning composition formed by the combination of a first composition and a second composition;
wherein the first composition comprises a peroxide; and wherein the second composition comprises at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
The liquid cleaning composition of this fourth aspect may have any of the features and advantages of the third composition described in relation to the first aspect and/or the liquid cleaning composition described in relation to the second aspect.
The first composition and the second composition of this fourth aspect may have any of the features and advantages described in relation to the first and second aspects.
Suitably the liquid cleaning composition of this fourth aspect comprises at least one peracid compound produced by reaction of the peroxide with at least one of the at least two acids.
According to a fifth aspect of the present invention, there is provided an aqueous composition comprising:
from 1 and 10 wt% hydrogen peroxide;
from 0.05 to 1.0 wt% potassium citrate; and from 0.1 to 2.0 wt% citric acid.
Alternatively, this fifth aspect may provide an aqueous composition comprising:
from 1 and 10 wt% hydrogen peroxide; and from 0.0001 to 0.01 wt% adipic acid.
The aqueous composition of this fifth aspect may have any of the features or advantages of the first composition described in relation to the first and second aspects.
According to a sixth aspect of the present invention, there is provided an aqueous composition comprising:
from 10 to 35 wt% citric acid;
from 1 to 10 wt% acetic acid; and from 1 to 8 wt% lactic acid.
The aqueous composition of this sixth aspect may have any of the features or advantages of the second composition described in relation to the first and second aspects.
According to a seventh aspect of the present invention, there is provided the use of a kit according to the first aspect for cleaning and disinfecting an apparatus.
The use of this seventh aspect may have any of the suitable features and advantages of the method of the second aspect.
According to a eighth aspect of the present invention, there is provided the use of a liquid cleaning composition according to the third aspect for cleaning and disinfecting an apparatus.
The use of this eighth aspect may have any of the suitable features and advantages of the method of the second aspect.
According to a ninth aspect of the present invention, there is provided a use of a composition comprising at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid for improving the effectiveness of a composition comprising a peroxide in the cleaning and disinfecting of an apparatus.
The composition comprising at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid may have any of the suitable features and advantages as described in relation to the second composition of the first aspect.
The composition comprising a peroxide may have any of the suitable features and advantages as described in relation to the first composition of the first aspect.
The use of this ninth aspect may have any of the suitable features and advantages of the method of the second aspect.
Examples
Example 1 - preparation of kit
A first composition comprising a peroxide and stabiliser (which may be termed a peroxide solution) was prepared by combining 540.5 ml of 37 wt% active hydrogen peroxide in water with 0.1 ml of adipic acid and 4,459.4 ml of demineralised water to provide 5,000 ml of the peroxide solution.
A second composition comprising the at least two acids (which may be termed an activator composition) was prepared by combining 1,148.75 g of citric acid monohydrate, 248.9 ml acetic acid, 148.85 ml of lactic acid, 8.3 g sodium bicarbonate, 8.75 g potassium citrate, 11.8 ml alcohol ethoxylate and 0.2 ml of FD&C blue no. 5 in 3,424.45 ml of demineralised waterto provide 5,000 ml of the activator solution.
Example 2 - preparation of liquid cleaning composition
Example 2, a liquid cleaning composition was prepared from the kit of Example 1 by combining the peroxide solution and the stabiliser solution and diluting the combined solution in demineralised water in a weight ratio of 1:99 of the combined solution to the demineralised water.
Cleaning efficiency - experimental set up and procedures
In order to establish the efficiency of the kit of Example 1 i the liquid cleaning composition of Example 2 in removing biofouling from a membrane surface, several cleaning tests were carried out In order to verify that the deposits on these delivery line membrane walls were observed (deposit morphology, moisture and organic matter content) the following techniques were used:
a) microbiological counts on membrane surface;
b) membrane surface/deposit inspection by Scanning-electron microscopy - Energy dispersive X-ray analysis (SEM-EDAX) is used to study the membrane surface and to verify the elemental composition of its foulant and deposits detected. Elemental determination with the SEM-EDXA system is based on analysis of X-rays produced via electron beam excitation of a sample area; and
c) foulant/membrane surface analysis by Attenuated Total Reflectance Infrared Spectrometry (ATR/IR). This technique can provide valuable information related to chemical structures and characterize the fouling layer from membrane surfaces. In the mid-infrared, absorption of radiation is related to fundamental vibrations of the chemical bonds. Internal reflection spectrometry provides information related to the presence or absence of specific functional groups. IR spectra were carried out for the foulant taken from the delivery line surface in all case studies. In all of the 3 cases the identified compounds are protein derivatives that are commonly related to the presence of microorganisms I biofilm (IR bands at 1639 and 5 1561 cm'1).
Data for membranes selected for this study are summarized in Table 1.
Table 1 - Summarized data for membrane samples used in laboratory scale tests
| Test membrane 1 | Test membrane 2 | Test membrane 3 | |
| Membrane type: (Characterization conditions) | Toray TM820E-400 (800psi, 32.000ppm NaCI, 1000ml/min) | Dow Filmtec BW30400 (225psi, 2000ppm NaCI, 1000ml/min) | Hydranautics ESPA2+ (150 psi, 1,500mg/l NaCI, 1000ml/min) |
| Foulant description: | A brown orange coloured deposit was observed all over the membrane surface | Dark brown deposit covering both membrane space and spacer. Aluminosilicates also detected. | Membrane surface was homogeneously covered by a brown and jelly deposit. |
| LOI: | Not performance (NaCI interference) | Moisture: 73.4 % Organic matter: 53,3% | Moisture: 94.2 % Organic matter: 86.3% |
| Microbe, counts: | Aerobic Bacteria 1.5x103 | Aerobic Bacteria 8.2x103 | Aerobic bacteria 3.1x 104 |
| Moulds and Yeasts 13 | Moulds and Yeasts 19 | 35 Moulds and Yeasts 9 | |
| ATR-FTIR: | Proteins derivatives related to biofilms presence confirmed (1639 and 1561 cm-1 bands) | Proteins derivatives related to biofilms presence confirmed (1639 and 1561 cm'1 bands) | Proteins derivatives related to biofilms presence confirmed (1639 and 1561 cm-1 bands) |
Cleaning experiments were performed with a laboratory scale cross-flow test rig unit.
Rectangular flat sheet membrane coupons from reverse osmosis elements were housed in a stainless-steel cell, with an effective membrane area of 231 cm . Feed liquid having a broth of commercially available beer (Boddingtons) was circulated under characterisation conditions (pressure) established by the membrane element manufacturer in order to establish a baseline for each membrane sample - a “before cleaning” flow rate of the beer (see Table 2 below).
The flow rate data was normalized to 25 °C conditions.
Three different cleaning solutions Example 2, CS2 and CS3 were prepared and used in each of the tests 1, 2 and 3. The different cleaning solutions were circulated at 40 psi in each of the three tests. The composition of each of the three cleaning solutions used in each test is described below in Table 2. After circulating the cleaning solution for two hours, the 5 membrane was rinsed with deionised water and characterised with the same conditions described above to obtain an “after cleaning” flow rate of the beer (see Table 2 below). The cleaning efficiency of the product is then evaluated in terms of flux and rejection variations. Additional analysis and visual inspection can be carried out to provide further evaluation.
Cleaning efficiency - results
The results obtained in the different cleaning tests 1-3 and the conditions applied (temperature, pH and contact time) are summarized in Table 2. Figure 1 depicts a graphical summary of the different tests 1-3 showing the percentage flux change of each membrane coupon section after the cleaning process with the cleaning solutions Example 2, CS1 and CS2.
Table 2 Summarized data for cleaning test conditions and results
| Test membrane no. | Cleaning solution | Temp. | pH | Time | Flow rate (l/m*h 25°C) | |
| Before cleaning | After cleaning | |||||
| 1 | Example 2 (1 wt%) | 35°C | 3.5 | 2hrs | 24.89 | 39.91 |
| CS1 Na4EDTA (1 wt%) + sodium tripolyphosphate STP (2 wt%) | 35°C | 11.5 | 2hrs | 26.19 | 30.51 | |
| CS2 Sodium dodecyl benzene sulfonate (0.25 wt%) + Na4EDTA (1 wt%) | 35°C | 11.5 | 2hrs | 28.80 | 33.98 | |
| 2 | Example 2 (1 wt%) | 35°C | 3.5 | 2hrs | 9.77 | 23.22 |
| CS1 Na4EDTA (1 wt%) + sodium tripolyphosphate STP (2 wt%) | 35°C | 11.5 | 2hrs | 10.98 | 23.84 | |
| CS2 Sodium dodecyl benzene sulfonate (0.25 wt%) + Na4EDTA (1 wt%) | 35°C | 11.5 | 2hrs | 12.92 | 17.58 | |
| 3 | Example 2 (1 wt%) | 35°C | 3.5 | 2hrs | 23.17 | 38.92 |
| CS1 Na4EDTA (1 wt%) + sodium tripolyphosphate | 35°C | 11.5 | 2hrs | 24.60 | 30.59 |
| STP (2 wt%) | |||||
| CS2 Sodium dodecyl benzene sulfonate (0.25 wt%) + Na4EDTA (1 wt%) | 35°C | 11.5 | 2hrs | 26.70 | 32.46 |
The data obtained shows that Example 2 is more efficient in removing the biological foulant than the other chemical blends in terms of flow improvements. In order to confirm foulant removal from the membrane surface, SEM inspection for membrane surface before and after cleaning was conducted. Results for Test Membrane 3 with Example 2 are shown in Figure 2.
In summary, the present invention provides a kit for cleaning and disinfecting an apparatus. The kit comprises a first composition and a second composition which are combined to provide a cleaning and disinfecting solution. The first composition comprises a peroxide; and the second composition comprises at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid. A liquid cleaning composition formed by the combination of a first composition and a second composition and a method of cleaning and disinfecting an apparatus using said kit or liquid cleaning composition is also provided. The kit may be particularly useful for cleaning and/or disinfecting a beverage delivery system. Using prior art cleaning solutions, microorganisms may not be completely removed from a beverage delivery system. The kit of the present invention may remove approximately 100% of microorganisms from a beverage delivery system, for example when added to a holding feed system at a suitable dosage rate. The examples above show that the kit of the present invention may be more effective at removing biofouling from beverage delivery systems than prior art cleaning solutions at a dosage rate of 1 wt%. This is significantly lower than prior art cleaning solutions.
Although a few preferred embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications might be made without departing from the scope of the invention, as defined in the appended claims.
Throughout this specification, the term “comprising” or “comprises” means including the component(s) specified but not to the exclusion of the presence of other components. The term “consisting essentially of’ or “consists essentially of” means including the components specified but excluding other components except for materials present as impurities, unavoidable materials present as a result of processes used to provide the components, and components added for a purpose other than achieving the technical effect of the invention. Typically, when referring to compositions, a composition consisting essentially of a set of components will comprise less than 5% by weight, typically less than 3% by weight, more typically less than 1% by weight of non-specified components.
The term “consisting of” or “consists of’ means including the components specified but excluding addition of other components.
Whenever appropriate, depending upon the context, the use of the term “comprises” or “comprising” may also be taken to encompass or include the meaning “consists essentially of’ or “consisting essentially of’, and may also be taken to include the meaning “consists of’ or “consisting of’.
For the avoidance of doubt, wherein amounts of components in a composition are described in wt%, this means the weight percentage of the specified component in relation to the whole composition referred to. For example the phrase “the first composition comprises at least 1.0 wt% peroxide” means that 1.0 wt% ofthe first composition is provided by hydrogen peroxide.
The optional features set out herein may be used either individually or in combination with each other where appropriate and particularly in the combinations as set out in the accompanying claims. The optional features for each aspect or exemplary embodiment ofthe invention as set out herein are also to be read as applicable to any other aspect or exemplary embodiments ofthe invention, where appropriate. In other words, the skilled person reading this specification should consider the optional features for each exemplary embodiment ofthe invention as interchangeable and combinable between different exemplary embodiments.
Attention is directed to all papers and documents which are filed concurrently with or previous to this specification in connection with this application and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference.
All of the features disclosed in this specification (including any accompanying claims, and drawings), and/or all ofthe steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
Each feature disclosed in this specification (including any accompanying claims, and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, and drawings), or to any novel one, or any novel combination, ofthe steps of any method or process so disclosed.
Claims (18)
1. A kit for cleaning and disinfecting an apparatus, the kit comprising a first composition and a second composition;
wherein the first composition comprises a peroxide; and wherein the second composition comprises at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
2. The kit according to claim 1, wherein the first composition comprises a stabiliser.
3. The kit according to claim 2, wherein the stabiliser comprises a carboxylic acid and/or a salt of a carboxylic acid.
4. The kit according to claim 2 or claim 3, wherein the stabiliser comprises adipic acid.
5. The kit according to claim 2 or claim 3, wherein the stabiliser is a mixture of potassium citrate and citric acid.
6. The kit according to any preceding claim, wherein the peroxide is hydrogen peroxide.
7. The kit according to any preceding claim, wherein the second composition comprises at least three acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
8. The kit according to any preceding claim, wherein the second composition comprises citric acid.
9. The kit according to claim 7, wherein the second composition comprises lactic acid and acetic acid.
10. The kit according to any preceding claim, wherein the second composition comprises a salt of a carboxylic acid and/or an alkaline salt.
11. The kit according to claim 10, wherein the salt of a carboxylic acid is a citric acid salt and the alkali salt is a carbonate salt.
12. The kit according to any preceding claim, wherein the second composition comprises a surfactant.
13. A method of cleaning and disinfecting an apparatus, the method comprising contacting said apparatus with a liquid cleaning composition comprising a peroxide and at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
14. The method of claim 13 comprising a step of combining a first composition and a second composition to form the liquid cleaning composition, wherein the first composition comprises the peroxide and the second composition comprises the at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
15. A liquid cleaning composition comprising a peroxide and at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
16. A liquid cleaning composition formed by the combination of a first composition and a second composition;
wherein the first composition comprises a peroxide; and wherein the second composition comprises at least two acids selected from citric acid, tartaric acid, malic acid, maleic acid, lactic acid and acetic acid.
17. An aqueous composition comprising:
from 1 and 10 wt% hydrogen peroxide; and from 0.0001 to 0.01 wt% adipic acid.
18. An aqueous composition comprising:
from 10 to 35 wt% citric acid;
from 1 to 10 wt% acetic acid; and from 1 to 8 wt% lactic acid.
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| GB1806416.2A GB2573007A (en) | 2018-04-19 | 2018-04-19 | Improvements relating to cleaning |
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| Application Number | Priority Date | Filing Date | Title |
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| GB1806416.2A GB2573007A (en) | 2018-04-19 | 2018-04-19 | Improvements relating to cleaning |
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| GB2573007A true GB2573007A (en) | 2019-10-23 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2276165A1 (en) * | 1998-06-30 | 1999-12-30 | Bernardus M. Tangelder | Cleaning composition for removing mildew, soap scum and hard water scale |
| EP1229107A1 (en) * | 2001-02-05 | 2002-08-07 | The Procter & Gamble Company | Process of cleaning carpets with a composition comprising a fluorinated compound |
| WO2010037219A1 (en) * | 2008-09-30 | 2010-04-08 | Virox Technologies Inc. | Concentrated hydrogen peroxide disinfecting solutions |
| US20150093425A1 (en) * | 2013-09-30 | 2015-04-02 | Chemlink Laboratories, Llc | Environmentally preferred antimicrobial compositions |
| US20160145547A1 (en) * | 2014-11-25 | 2016-05-26 | Milliken & Company | Film-Encased Cleaning Composition |
| CN106800984A (en) * | 2015-11-26 | 2017-06-06 | 瑞普（天津）生物药业有限公司 | A kind of acid pipeline cleaning agent and preparation method thereof |
-
2018
- 2018-04-19 GB GB1806416.2A patent/GB2573007A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2276165A1 (en) * | 1998-06-30 | 1999-12-30 | Bernardus M. Tangelder | Cleaning composition for removing mildew, soap scum and hard water scale |
| EP1229107A1 (en) * | 2001-02-05 | 2002-08-07 | The Procter & Gamble Company | Process of cleaning carpets with a composition comprising a fluorinated compound |
| WO2010037219A1 (en) * | 2008-09-30 | 2010-04-08 | Virox Technologies Inc. | Concentrated hydrogen peroxide disinfecting solutions |
| US20150093425A1 (en) * | 2013-09-30 | 2015-04-02 | Chemlink Laboratories, Llc | Environmentally preferred antimicrobial compositions |
| US20160145547A1 (en) * | 2014-11-25 | 2016-05-26 | Milliken & Company | Film-Encased Cleaning Composition |
| CN106800984A (en) * | 2015-11-26 | 2017-06-06 | 瑞普（天津）生物药业有限公司 | A kind of acid pipeline cleaning agent and preparation method thereof |
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| GB201806416D0 (en) | 2018-06-06 |
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