CA2285045A1 - Sanitizing composition and method - Google Patents
Sanitizing composition and method Download PDFInfo
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- CA2285045A1 CA2285045A1 CA002285045A CA2285045A CA2285045A1 CA 2285045 A1 CA2285045 A1 CA 2285045A1 CA 002285045 A CA002285045 A CA 002285045A CA 2285045 A CA2285045 A CA 2285045A CA 2285045 A1 CA2285045 A1 CA 2285045A1
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- acid
- composition
- sulfonated
- sanitizing composition
- sanitizing
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- 239000000203 mixture Substances 0.000 title claims description 63
- 238000011012 sanitization Methods 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 18
- 239000002904 solvent Substances 0.000 claims abstract description 41
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 27
- 239000000194 fatty acid Substances 0.000 claims abstract description 27
- 229930195729 fatty acid Natural products 0.000 claims abstract description 27
- 150000001875 compounds Chemical class 0.000 claims abstract description 25
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 25
- 239000004599 antimicrobial Substances 0.000 claims abstract description 24
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 150000002148 esters Chemical class 0.000 claims abstract description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 42
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 30
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 27
- 235000019441 ethanol Nutrition 0.000 claims description 22
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 21
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- 150000002888 oleic acid derivatives Chemical class 0.000 claims description 19
- 229940006295 sulfonated oleic acid Drugs 0.000 claims description 19
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 18
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000004310 lactic acid Substances 0.000 claims description 7
- 235000014655 lactic acid Nutrition 0.000 claims description 7
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 claims description 6
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 claims description 3
- 235000019439 ethyl acetate Nutrition 0.000 claims description 3
- 229960004275 glycolic acid Drugs 0.000 claims description 3
- 229940051250 hexylene glycol Drugs 0.000 claims description 3
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical class C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 claims description 2
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical class CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 claims description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims 1
- 230000000845 anti-microbial effect Effects 0.000 claims 1
- 229910052740 iodine Inorganic materials 0.000 claims 1
- 239000011630 iodine Substances 0.000 claims 1
- 241000894006 Bacteria Species 0.000 description 21
- 239000000243 solution Substances 0.000 description 12
- 239000008233 hard water Substances 0.000 description 9
- 230000000844 anti-bacterial effect Effects 0.000 description 6
- 239000003899 bactericide agent Substances 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000005187 foaming Methods 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
- 239000000796 flavoring agent Substances 0.000 description 4
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 235000019634 flavors Nutrition 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000004155 Chlorine dioxide Substances 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 235000019398 chlorine dioxide Nutrition 0.000 description 2
- -1 fatty acid salts Chemical class 0.000 description 2
- 150000002194 fatty esters Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- 101100172879 Caenorhabditis elegans sec-5 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000192125 Firmicutes Species 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 150000002497 iodine compounds Chemical class 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N linoleic acid group Chemical group C(CCCCCCC\C=C/C\C=C/CCCCC)(=O)O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 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
- 150000002889 oleic acids Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-N tetradecanoic acid Chemical class CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/04—Sulfonic acids; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/26—Phosphorus; Compounds thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention is directed to a sanitizer that includes (a) a sulfonated compound selected from the group consisting of a fatty acid and esters and salts thereof; (b) a solvent for the sulfonated compound; (c) a solubilizing agent for the sulfonated compound; and (d) an antimicrobial agent. The steps used to prepare the sanitizer include: (a) contacting the sulfonated compound with the solvent; and (b) contacting the solubilizing agent with the solvent. The time between the two contacting steps is preferably no more than about 20 minutes.
Description
2 PCT/US99/03091 SANITIZING COMPOSITION AND METHOD
FIELD OF THE INVENTION
The present invention is generally directed to compositions and methods for sanitizing articles and specifically to compositions and methods for sanitizing using fatty acids and antimicrobial agents.
BACKGROUND OF THE INVENTION
Final rinse sanitizers are used by food processors, beverage producers, dairy processors, fermented products, and the pharmaceutical industry, among others, to kill bacteria found on equipment. This has always been of primary importance to ensue a bacteria-free environment on the processing equipment to reduce the chance of contamination of food or pharmaceutical items being distributed to the general public.
Common sanitizers used in this process range in types and effectiveness. Sanitizers using chlorine compounds have been the standard in the industry; however, such sanitizers have a number of drawbacks. Chlorine-based sanitizers can be corrosive to equipment, decompose at high temperatures, be adversely affected by organic soil loads, and impart undesirable flavors to food or pharmaceutical items at high temperatures. Sanitizers using iodine compounds can have many,, if not all, of the same drawbacks as chlorine-based sanitizers as well as the'additional drawback of staining the item being sanitized. Sanitizers using peroxyacetic acid have become widely used in food processing but are falling out of favor due to their corrosiveness on metal articles, such as stainless steel and gasket material. Peroxyacetic acid-based sanitizers are considered by many to be one of the most hazardous sanitizers on the market. Sanitizers using quaternary ammonium compounds have found only limited use due to their inability to kill certain types of bacteria. Such sanitizers are very active against gram positives, yeast, and molds but have limited effectiveness in killing gram negative bacteria. The sanitizers are relatively high foaming, thereby causing many problems in CIP Equipment.
Sanitizers using chlorine dioxide require an activation step and long dwell time after activation before chlorine dioxide becomes an effective bactericide. Sanitizers using dodecylbenzene, sulfonic acid, or other similar compounds produce excessive foam or produce off-odors, causing CIP
problems and/or off-flavors.
SUI~lARY OF THE INVENTION
Objectives of the present invention include providing a sanitizer that is highly efficacious in killing a wide' variety of bacteria including both gram positive and negative bacteria, has a relatively low degree of corrosiveness to metals, is stable at relatively high temperatures, is not impacted by organic soil loads, imparts no flavor to the sanitized item, does not stain the sanitized item, is relatively nonhazardous, is relatively low foaming or nonfoaming, requires no activation or dwell time after activation to be effective in killing bacteria, has effective killing power, leaves surfaces film-free, and/or produces no off-odors after sanitization is completed.
These and other objectives are addressed by the sanitizing composition of the present invention. In one embodiment, a liquid sanitizing composition is provided that includes:
(a) no more than about 14.0 wt.~ (and more preferably no more than about 11.5 wt.$) of at least one of a sulfonated compound selected from the group consisting of a fatty acid and esters and salts thereof (b) a solubilizin~ agent for the sulfonated compound:
and (c) an antimicrobial agent.
FIELD OF THE INVENTION
The present invention is generally directed to compositions and methods for sanitizing articles and specifically to compositions and methods for sanitizing using fatty acids and antimicrobial agents.
BACKGROUND OF THE INVENTION
Final rinse sanitizers are used by food processors, beverage producers, dairy processors, fermented products, and the pharmaceutical industry, among others, to kill bacteria found on equipment. This has always been of primary importance to ensue a bacteria-free environment on the processing equipment to reduce the chance of contamination of food or pharmaceutical items being distributed to the general public.
Common sanitizers used in this process range in types and effectiveness. Sanitizers using chlorine compounds have been the standard in the industry; however, such sanitizers have a number of drawbacks. Chlorine-based sanitizers can be corrosive to equipment, decompose at high temperatures, be adversely affected by organic soil loads, and impart undesirable flavors to food or pharmaceutical items at high temperatures. Sanitizers using iodine compounds can have many,, if not all, of the same drawbacks as chlorine-based sanitizers as well as the'additional drawback of staining the item being sanitized. Sanitizers using peroxyacetic acid have become widely used in food processing but are falling out of favor due to their corrosiveness on metal articles, such as stainless steel and gasket material. Peroxyacetic acid-based sanitizers are considered by many to be one of the most hazardous sanitizers on the market. Sanitizers using quaternary ammonium compounds have found only limited use due to their inability to kill certain types of bacteria. Such sanitizers are very active against gram positives, yeast, and molds but have limited effectiveness in killing gram negative bacteria. The sanitizers are relatively high foaming, thereby causing many problems in CIP Equipment.
Sanitizers using chlorine dioxide require an activation step and long dwell time after activation before chlorine dioxide becomes an effective bactericide. Sanitizers using dodecylbenzene, sulfonic acid, or other similar compounds produce excessive foam or produce off-odors, causing CIP
problems and/or off-flavors.
SUI~lARY OF THE INVENTION
Objectives of the present invention include providing a sanitizer that is highly efficacious in killing a wide' variety of bacteria including both gram positive and negative bacteria, has a relatively low degree of corrosiveness to metals, is stable at relatively high temperatures, is not impacted by organic soil loads, imparts no flavor to the sanitized item, does not stain the sanitized item, is relatively nonhazardous, is relatively low foaming or nonfoaming, requires no activation or dwell time after activation to be effective in killing bacteria, has effective killing power, leaves surfaces film-free, and/or produces no off-odors after sanitization is completed.
These and other objectives are addressed by the sanitizing composition of the present invention. In one embodiment, a liquid sanitizing composition is provided that includes:
(a) no more than about 14.0 wt.~ (and more preferably no more than about 11.5 wt.$) of at least one of a sulfonated compound selected from the group consisting of a fatty acid and esters and salts thereof (b) a solubilizin~ agent for the sulfonated compound:
and (c) an antimicrobial agent.
3 To provide an effective environment for the killing of bacteria, the liquid sanitizing composition has a pH of no more than about 3Ø
The sanitizer is not only highly efficacious in killing bacteria but also can be relatively low foaming, noncorrosive, stable at relatively high temperatures, unaffected by organic soil loads, flavor neutral, nonstaining, and nonhazardous to users. The sanitizer can also have effective killing power, leave surfaces film free, and yield few, if any, off-odors.
The sulfonated fatty acid is preferably selected from the group consisting of sulfonated oleic acids, sulfonated linoleic acids, sulfonated myristic acids, and mixtures thereof. The sulfonated fatty acid preferably has a concentration in the sanitizing composition of no more than about 11.5 grams/liter.
The antimicrobial agent can be any of a variety of bactericides, including phosphoric acid, citric acid, lactic acid, hydrochloric acid, hydroxyacetic acid, acetic acid, and esters and salts and mixtures thereof, with phosphoric acid, citric acid, and lactic acid being most preferred. The antimicrobial agent has a preferred concentration in the sanitizing composition ranging from about 0.4 to about 400 grams/liter. The preferred antimicrobial agents require no activation step or swell time to make the agent an effective bactericide.
The solubilizing agent is preferably an alcohol, such as propylene glycol, ethyl alcohol, isopropyl alcohol, hexylene glycol, and mixtures thereof. The preferred concentration of the alcohol in the sanitizing composition ranges from about 0.02 to about 80 grams/liter.
The sanitizing composition preferably does not include deleterious compounds found in other sanitizers. By way of example, the composition is preferably substantially free
The sanitizer is not only highly efficacious in killing bacteria but also can be relatively low foaming, noncorrosive, stable at relatively high temperatures, unaffected by organic soil loads, flavor neutral, nonstaining, and nonhazardous to users. The sanitizer can also have effective killing power, leave surfaces film free, and yield few, if any, off-odors.
The sulfonated fatty acid is preferably selected from the group consisting of sulfonated oleic acids, sulfonated linoleic acids, sulfonated myristic acids, and mixtures thereof. The sulfonated fatty acid preferably has a concentration in the sanitizing composition of no more than about 11.5 grams/liter.
The antimicrobial agent can be any of a variety of bactericides, including phosphoric acid, citric acid, lactic acid, hydrochloric acid, hydroxyacetic acid, acetic acid, and esters and salts and mixtures thereof, with phosphoric acid, citric acid, and lactic acid being most preferred. The antimicrobial agent has a preferred concentration in the sanitizing composition ranging from about 0.4 to about 400 grams/liter. The preferred antimicrobial agents require no activation step or swell time to make the agent an effective bactericide.
The solubilizing agent is preferably an alcohol, such as propylene glycol, ethyl alcohol, isopropyl alcohol, hexylene glycol, and mixtures thereof. The preferred concentration of the alcohol in the sanitizing composition ranges from about 0.02 to about 80 grams/liter.
The sanitizing composition preferably does not include deleterious compounds found in other sanitizers. By way of example, the composition is preferably substantially free
4 of iodine, chlorine, peroxyacetic acid, dodecylbenzene, sulfonic acid, and quaternary ammonium compounds.
The sanitizing composition can further include a solvent for the above-noted components. The solvent is preferably selected from the group consisting of water, hydrogen peroxide, ethoxylated alcohols, and mixtures thereof.
The steps used to prepare the sanitizing composition are important to the effectiveness of the composition. The method includes the steps of:
(a) contacting the sulfonated fatty acid with a solvent for the sulfonated fatty acid:
(b) contacting the alcohol with the solvent to form an intermediate sanitizing composition, wherein the time between contacting step (a) and contacting step (b) is preferably no more than about 20 minutes. The intermediate sanitizing composition can be contacted with the antimicrobial agent at an acidic pH. If too long a period of time passes between the additions of the sulfonated fatty acid and the alcohol, the sulfonated fatty acid can "wax out" of the solvent.
DETAILED DESCRIPTION
The low foaming sanitizer of the present invention preferably includes a solvent, a sulfonated fatty acid and/or esters and/or salts thereof, a solubilizing agent for the sulfonated fatty acid in the solvent, and an antimicrobial agent. The pH of the sanitizer preferably is acidic, more preferably is no more than about pH 3 and more preferably ranges from about pH 1 to about pH 2.
The solvent (or carrier) can be any solvent (or carrier), preferably nontoxic and nonhazardous, for the sulfonated fatty acid and the antimicrobial agent.
Preferred solvents (and/or carriers) include water, hydrogen peroxide, propylene glycol, isopropyl alcohol, and mixtures thereof with water and propylene glycol being most preferred.
The sulfonated fatty acid can be any low foaming compound having one or more sulfo groups connected to a
The sanitizing composition can further include a solvent for the above-noted components. The solvent is preferably selected from the group consisting of water, hydrogen peroxide, ethoxylated alcohols, and mixtures thereof.
The steps used to prepare the sanitizing composition are important to the effectiveness of the composition. The method includes the steps of:
(a) contacting the sulfonated fatty acid with a solvent for the sulfonated fatty acid:
(b) contacting the alcohol with the solvent to form an intermediate sanitizing composition, wherein the time between contacting step (a) and contacting step (b) is preferably no more than about 20 minutes. The intermediate sanitizing composition can be contacted with the antimicrobial agent at an acidic pH. If too long a period of time passes between the additions of the sulfonated fatty acid and the alcohol, the sulfonated fatty acid can "wax out" of the solvent.
DETAILED DESCRIPTION
The low foaming sanitizer of the present invention preferably includes a solvent, a sulfonated fatty acid and/or esters and/or salts thereof, a solubilizing agent for the sulfonated fatty acid in the solvent, and an antimicrobial agent. The pH of the sanitizer preferably is acidic, more preferably is no more than about pH 3 and more preferably ranges from about pH 1 to about pH 2.
The solvent (or carrier) can be any solvent (or carrier), preferably nontoxic and nonhazardous, for the sulfonated fatty acid and the antimicrobial agent.
Preferred solvents (and/or carriers) include water, hydrogen peroxide, propylene glycol, isopropyl alcohol, and mixtures thereof with water and propylene glycol being most preferred.
The sulfonated fatty acid can be any low foaming compound having one or more sulfo groups connected to a
5 carbon or nitrogen atom. The chain length of the sulfonated compound is preferably relatively short to permit the sulfonated compound to pass through the cell wall of the bacteria. Most preferably, the chain length is short enough to produce a molecular weight of the sulfonated compound of about 172 daltons or less.
Preferred sulfonated fatty acids include sulfonated oleic acid, sulfonated linoleic acid, sulfonated myristic acid, toluene sulfonic acid, and mixtures thereof. Although the sanitizer can include esters and/or salts of sulfonated fatty acids in lieu of a sulfonated fatty acid, sulfonated fatty acids and salts thereof are most preferred.
The total concentration of the sulfonated fatty acid, fatty esters, and fatty acid salts is important to the performance of the sanitizer. The concentration (before dilution for use) is preferably no more than about 14.0 wt.$ and more preferably ranges from about 6 to about 12 wt.~ and most preferably from about 9 to about 11.5 wt.~ or preferably no more than about 14.0 g/1 and more preferably ranges from about 6 to about 12 g/1 and most preferably from about 10.0 to about 11.5 g/1. The final use concentration is preferably no more than about 0.07 wt.$
(i.e., no more than about 0.7 g/1) and more preferably ranges from about 0.01 to about 0.03 wt.$ (i.e.,ranging from about 0.01 to about 0.03 g/1). As will be appreciated, the "final use" concentration refers to the concentration of the selected component during sanitization. In some applications, the sanitizer is diluted with additional solvent or carrier (e. g., water) prior to sanitization. The common dilution ratio of the
Preferred sulfonated fatty acids include sulfonated oleic acid, sulfonated linoleic acid, sulfonated myristic acid, toluene sulfonic acid, and mixtures thereof. Although the sanitizer can include esters and/or salts of sulfonated fatty acids in lieu of a sulfonated fatty acid, sulfonated fatty acids and salts thereof are most preferred.
The total concentration of the sulfonated fatty acid, fatty esters, and fatty acid salts is important to the performance of the sanitizer. The concentration (before dilution for use) is preferably no more than about 14.0 wt.$ and more preferably ranges from about 6 to about 12 wt.~ and most preferably from about 9 to about 11.5 wt.~ or preferably no more than about 14.0 g/1 and more preferably ranges from about 6 to about 12 g/1 and most preferably from about 10.0 to about 11.5 g/1. The final use concentration is preferably no more than about 0.07 wt.$
(i.e., no more than about 0.7 g/1) and more preferably ranges from about 0.01 to about 0.03 wt.$ (i.e.,ranging from about 0.01 to about 0.03 g/1). As will be appreciated, the "final use" concentration refers to the concentration of the selected component during sanitization. In some applications, the sanitizer is diluted with additional solvent or carrier (e. g., water) prior to sanitization. The common dilution ratio of the
6 sanitizes to the solvent or carrier is at least about 0.2~
and more commonly ranges from about 0.3$ to about 0.5$.
The solubilizing agent can be any compound that renders the fatty acid, fatty ester, or fatty acid salt more soluble in the solvent. Preferred solubilizing agents are short chained alcohols having a molecular weight of no more than about 46 daltons. The most preferred agents include propylene glycol, ethyl alcohol, isopropyl alcohol, hexylene glycol, and mixtures thereof. The molar ratio of the solubilizing agent to the sulfonated compound preferably ranges from about 4:1 to about 2:1 and more preferably from about 3:1 to about 2.2:1. Such molar ratios yield a preferred concentration (before dilution for use) of the solubilizing agent in the sanitizes that ranges from about 10 to about 80 g/1 and more preferably from about 30 to about 60 g/1 or from about 1 to about 8 wt.$, more preferably from about 3.5 wt.~ to about 6.5 wt.~, and most preferably from about 4.5 wt.~ to about 5.5 wt.~., The final use concentration preferably ranges from about 0.02 to about 0.40 g/1 (i.e., from about 0.001 to about 0.04 wt.$) and more preferably from about 0.06 to about 0.30 g/1 (i.e., from about 0.001 to about 0.03 wt.~).
The antimicrobial agent can be any of a variety of bactericides. Preferred bactericides include phosphoric acid, citric acid, lactic acid, hydrochloric acid, hydroxyacetic acid, acetic acid, and esters and salts thereof, with food grade bactericides such as phosphoric acid, citric acid, and lactic acid and esters and salts thereof being most preferred. While not wishing to be bound by any theory, it is believed that the antimicrobial agent and fatty compound operate synergistically to cause bacterial death. The fatty compound is believed to penetrate and cause swelling of the cell wall. The antimicrobial agent is able to pass through the swollen
and more commonly ranges from about 0.3$ to about 0.5$.
The solubilizing agent can be any compound that renders the fatty acid, fatty ester, or fatty acid salt more soluble in the solvent. Preferred solubilizing agents are short chained alcohols having a molecular weight of no more than about 46 daltons. The most preferred agents include propylene glycol, ethyl alcohol, isopropyl alcohol, hexylene glycol, and mixtures thereof. The molar ratio of the solubilizing agent to the sulfonated compound preferably ranges from about 4:1 to about 2:1 and more preferably from about 3:1 to about 2.2:1. Such molar ratios yield a preferred concentration (before dilution for use) of the solubilizing agent in the sanitizes that ranges from about 10 to about 80 g/1 and more preferably from about 30 to about 60 g/1 or from about 1 to about 8 wt.$, more preferably from about 3.5 wt.~ to about 6.5 wt.~, and most preferably from about 4.5 wt.~ to about 5.5 wt.~., The final use concentration preferably ranges from about 0.02 to about 0.40 g/1 (i.e., from about 0.001 to about 0.04 wt.$) and more preferably from about 0.06 to about 0.30 g/1 (i.e., from about 0.001 to about 0.03 wt.~).
The antimicrobial agent can be any of a variety of bactericides. Preferred bactericides include phosphoric acid, citric acid, lactic acid, hydrochloric acid, hydroxyacetic acid, acetic acid, and esters and salts thereof, with food grade bactericides such as phosphoric acid, citric acid, and lactic acid and esters and salts thereof being most preferred. While not wishing to be bound by any theory, it is believed that the antimicrobial agent and fatty compound operate synergistically to cause bacterial death. The fatty compound is believed to penetrate and cause swelling of the cell wall. The antimicrobial agent is able to pass through the swollen
7 cell wall, thereby causing rupturing of the cell wall and death of the bacteria.
The final use concentration of the antimicrobial agent is important to the efficacy of the sanitizer. Preferably, the molar ratio between the sulfonated compound and the antimicrobial agent ranges from about 1:1 to about 3:1 and more preferably from about 1.5:1 to about 2:1, which yields a preferred concentration (before dilution for use) ranging from about 20 to about 40 wt.$ (or from about 200 to about 400 g/1) and a more preferred concentration ranging from about 25 to about 35 wt.$ (or from about 250 to about 350 g/1). The final use concentration preferably ranges from about 0.04 to about 0.2 wt.$ (or from about 0.40 to about 2 g/1) and more preferably from about 0.05 to about 0.18 wt.~ (or from about 0.5 to about 1.75 g/1).
The timing of the steps to prepare the sanitizer are important to the effectiveness of the sanitizer in killing microbes. The various components can be added to the solvent in any sequence (e.g., the sulfonated compound can be added before or after or at the same time as the solubilizing agent) so long as the sulfonated compound and the solubilizing agent are added in close temporal proximity to one another. Preferably, the sulfonated compound and the solubilizing agent are added within about 20 minutes of one another, more preferably within about 10 minutes, and most preferably within about 5 minutes. If too long a period of time elapses between the addition of the sulfonated compound and the solubilizing agent, the sulfonated compound can "wax out" (or precipitate out) of the solvent over time. The antimicrobial agent can be added at any time during preparation of the sanitizer. The concentrated sanitizer can thereafter be diluted prior to use.
WO 99!40792 PCT/US99/03091
The final use concentration of the antimicrobial agent is important to the efficacy of the sanitizer. Preferably, the molar ratio between the sulfonated compound and the antimicrobial agent ranges from about 1:1 to about 3:1 and more preferably from about 1.5:1 to about 2:1, which yields a preferred concentration (before dilution for use) ranging from about 20 to about 40 wt.$ (or from about 200 to about 400 g/1) and a more preferred concentration ranging from about 25 to about 35 wt.$ (or from about 250 to about 350 g/1). The final use concentration preferably ranges from about 0.04 to about 0.2 wt.$ (or from about 0.40 to about 2 g/1) and more preferably from about 0.05 to about 0.18 wt.~ (or from about 0.5 to about 1.75 g/1).
The timing of the steps to prepare the sanitizer are important to the effectiveness of the sanitizer in killing microbes. The various components can be added to the solvent in any sequence (e.g., the sulfonated compound can be added before or after or at the same time as the solubilizing agent) so long as the sulfonated compound and the solubilizing agent are added in close temporal proximity to one another. Preferably, the sulfonated compound and the solubilizing agent are added within about 20 minutes of one another, more preferably within about 10 minutes, and most preferably within about 5 minutes. If too long a period of time elapses between the addition of the sulfonated compound and the solubilizing agent, the sulfonated compound can "wax out" (or precipitate out) of the solvent over time. The antimicrobial agent can be added at any time during preparation of the sanitizer. The concentrated sanitizer can thereafter be diluted prior to use.
WO 99!40792 PCT/US99/03091
8 An experiment was performed to determine the effectiveness of a sanitizes according to the present invention in killing bacteria. A sanitizes was prepared using the following components: (a) 25 wt.$ of aqueous phosphoric acid (75 wt.$ solution) (b) 5 wt.$ propylene glycol (c) 2 wt.$ ethanol (100 proof): (d) 6 wt.$
sulfonated oleic acid: and (e) 62 wt.$ water.
Staphy.Iococcus aureus and pseudomonas aeruginosa were added to hard water in varying concentrations. A use concentration of 1 ounce of the sanitizes for 3 gallons of hard water was employed. At a bacteria concentration of 150 ppm in the hard water, the sanitizes had a 99.999$ kill rate and, at a bacteria concentration of 250 ppm in the hard water, the sanitizes had a kill rate of 99.9 $.
Another experiment was performed to determine the effectiveness of a sanitizes using higher concentrations of phosphoric acid and sulfonated oleic acid in killing bacteria. A sanitizes was prepared using the following components: (a) 40 wt.$ of aqueous phosphoric acid (75 wt.$ solution); (b) 5 wt.$ propylene glycol (c) 2 wt.$
ethanol (100 proof); (d) 19 wt.$ sulfonated oleic acid: and (e) 39 wt.$ water. Staphylococcus aureus and pseudomonas aeruginosa were added to separate batches of hard water at concentrations of 150 ppm and 250 ppm. A use concentration of 1 ounce of the sanitizes for 3 gallons of hard water was employed. At both concentrations, the bacteria kill rate was approximately 99.999$. After two weeks, the preparation became unstable at 100°F storage and the experiment was discontinued.
WO 99/40792 PCf/US99/03091
sulfonated oleic acid: and (e) 62 wt.$ water.
Staphy.Iococcus aureus and pseudomonas aeruginosa were added to hard water in varying concentrations. A use concentration of 1 ounce of the sanitizes for 3 gallons of hard water was employed. At a bacteria concentration of 150 ppm in the hard water, the sanitizes had a 99.999$ kill rate and, at a bacteria concentration of 250 ppm in the hard water, the sanitizes had a kill rate of 99.9 $.
Another experiment was performed to determine the effectiveness of a sanitizes using higher concentrations of phosphoric acid and sulfonated oleic acid in killing bacteria. A sanitizes was prepared using the following components: (a) 40 wt.$ of aqueous phosphoric acid (75 wt.$ solution); (b) 5 wt.$ propylene glycol (c) 2 wt.$
ethanol (100 proof); (d) 19 wt.$ sulfonated oleic acid: and (e) 39 wt.$ water. Staphylococcus aureus and pseudomonas aeruginosa were added to separate batches of hard water at concentrations of 150 ppm and 250 ppm. A use concentration of 1 ounce of the sanitizes for 3 gallons of hard water was employed. At both concentrations, the bacteria kill rate was approximately 99.999$. After two weeks, the preparation became unstable at 100°F storage and the experiment was discontinued.
WO 99/40792 PCf/US99/03091
9 Another experiment was performed to determine the effectiveness of a sanitizes using higher concentrations of phosphoric acid and sulfonated oleic acid in killing bacteria. A sanitizes was prepared using the following components: (a) 35 wt.% of aqueous phosphoric acid (75 wt.% solution); (b) 5 wt.% propylene glycolt (c) 2 wt.%
ethanol (100 proof); (d) 10 wt.% sulfonated oleic acid; and (e) 48 wt.% water. Staphylococcus aureus and pseudomonas aeruginosa were added to hard water in varying concentrations. A use concentration of 1 ounce of the sanitizes for 3 gallons of hard water was employed. At bacteria concentrations of 150 and 250 ppm in the hard water, the sanitizes had a 99.999% kill rate.
The following experiments were run against a standard Gram positive and Gram negative bacteria to demonstrate the synergistic effect of phosphoric acid and sulfonated oleic acid in killing such bacteria. Each organism was grown up to 2-6 x 106 organisms per cc of broth. The kill rates were run using a standard "AOATC" Weber & Black Chalange method.
Specifically, one cc of bacteria is placed in 99 mls of sanitize solution (200 ppms) held in solution for 30, 60, 120 seconds. At each interval a 1 cc sample was taken and then neutralized in 9 mls of 1% sodium bicarbonate solution. One cc was then withdrawn from the neutralizing solution and plated. After 48 hrs of incubation the results were read. The sanitize solutions included 200 ppm of phosphoric acid alone, 200 ppm of sulfonated oleic acid alone, and 200 ppm each of phosphoric acid and sulfonated oleic acid. The results are presented below.
IO
GRAM NEGATTVE
., Solution 200 ppms 30 sec 60 sec 120 sec Phosphoric Acid 6 x 106 4 x 10' 4 x 10' Sulfonated Oleic Acid 6 x 106 6 x 106 6 x 106 Sulfonated Oleic Acid & 6 x 106 2 x 102 1 x 101 Phosphoric Acid (Mixture Splits) SANITIZING COMPOSITION AND METHOD
GRAM POSITIVE
Solution 200 ppms 30 sec 60 sec 120 sec 5 Phosphoric Acid 2 x 105 2 x 10' 2 x 10' Sulfonated Oleic Acid 2 x 106 2 x 106 2 x 106 Sulfonated Acid and 2 x .104 2 x 10z 2 x 10 Sulfonated Oleic Acid As can be seen from the above tables, the sanitize solutions containing either phosphoric acid alone or sulfonated oleic acid alone had significantly lower kill rates against both gram negative and gram positive bacteria than a sanitize solution containing both sulfonated oleic acid and phosphoric acid. Accordingly, the joint use of sulfonated oleic acid and phosphoric acid provide surprising and unexpected synergistic results in killing bacteria.
While various embodiments of the present invention have been described in detail, it is apparent that modifications and adaptations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and adaptations are within the scope of the present invention, as set forth in the following claims.
ethanol (100 proof); (d) 10 wt.% sulfonated oleic acid; and (e) 48 wt.% water. Staphylococcus aureus and pseudomonas aeruginosa were added to hard water in varying concentrations. A use concentration of 1 ounce of the sanitizes for 3 gallons of hard water was employed. At bacteria concentrations of 150 and 250 ppm in the hard water, the sanitizes had a 99.999% kill rate.
The following experiments were run against a standard Gram positive and Gram negative bacteria to demonstrate the synergistic effect of phosphoric acid and sulfonated oleic acid in killing such bacteria. Each organism was grown up to 2-6 x 106 organisms per cc of broth. The kill rates were run using a standard "AOATC" Weber & Black Chalange method.
Specifically, one cc of bacteria is placed in 99 mls of sanitize solution (200 ppms) held in solution for 30, 60, 120 seconds. At each interval a 1 cc sample was taken and then neutralized in 9 mls of 1% sodium bicarbonate solution. One cc was then withdrawn from the neutralizing solution and plated. After 48 hrs of incubation the results were read. The sanitize solutions included 200 ppm of phosphoric acid alone, 200 ppm of sulfonated oleic acid alone, and 200 ppm each of phosphoric acid and sulfonated oleic acid. The results are presented below.
IO
GRAM NEGATTVE
., Solution 200 ppms 30 sec 60 sec 120 sec Phosphoric Acid 6 x 106 4 x 10' 4 x 10' Sulfonated Oleic Acid 6 x 106 6 x 106 6 x 106 Sulfonated Oleic Acid & 6 x 106 2 x 102 1 x 101 Phosphoric Acid (Mixture Splits) SANITIZING COMPOSITION AND METHOD
GRAM POSITIVE
Solution 200 ppms 30 sec 60 sec 120 sec 5 Phosphoric Acid 2 x 105 2 x 10' 2 x 10' Sulfonated Oleic Acid 2 x 106 2 x 106 2 x 106 Sulfonated Acid and 2 x .104 2 x 10z 2 x 10 Sulfonated Oleic Acid As can be seen from the above tables, the sanitize solutions containing either phosphoric acid alone or sulfonated oleic acid alone had significantly lower kill rates against both gram negative and gram positive bacteria than a sanitize solution containing both sulfonated oleic acid and phosphoric acid. Accordingly, the joint use of sulfonated oleic acid and phosphoric acid provide surprising and unexpected synergistic results in killing bacteria.
While various embodiments of the present invention have been described in detail, it is apparent that modifications and adaptations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and adaptations are within the scope of the present invention, as set forth in the following claims.
Claims (25)
1. A liquid sanitizing composition, comprising:
(a) a solvent;
(b) no more than about 14 wt.% of a sulfonated compound that is at least one of a sulfonated fatty acid and esters and salts thereof;
(c) a solubilizing agent for the sulfonated compound in the solvent; and (d) an antimicrobial agent, wherein the liquid sanitizing composition has a pH of no more than about 3Ø
(a) a solvent;
(b) no more than about 14 wt.% of a sulfonated compound that is at least one of a sulfonated fatty acid and esters and salts thereof;
(c) a solubilizing agent for the sulfonated compound in the solvent; and (d) an antimicrobial agent, wherein the liquid sanitizing composition has a pH of no more than about 3Ø
2. The sanitizing composition of Claim 1, wherein the sulfonated fatty acid is selected from the group consisting of a sulfonated oleic acid, a sulfonated linoleic acid, and a sulfonated myristic acid, and mixtures thereof.
3. The sanitizing composition of Claim 1, wherein the concentration of the sulfonated compound in the solvent is no more than about 11.5 g/l.
4. The sanitizing composition of Claim 1, wherein the antimicrobial agent is selected from the group consisting of phosphoric acid, citric acid, lactic acid, hydrochloric acid, hydroxyacetic acid, acetic acid, and esters and salts and mixtures thereof.
5. The sanitizing composition of Claim 1, wherein the concentration of the antimicrobial agent in the composition is at least about 0.4 g/l.
6. The sanitizing composition of Claim 1, wherein the composition comprises at least about 0.04 wt.% of the antimicrobial agent.
7. The sanitizing composition of Claim 1, wherein the solubilizing agent comprises an alcohol.
8. The sanitizing composition of Claim 6, wherein the alcohol is selected from the group consisting of propylene glycol, ethyl alcohol, isopropyl alcohol, hexylene glycol, and mixtures thereof.
9. The sanitizing composition of Claim 6, wherein the concentration of the alcohol in the solvent ranges from about 0.02 to about 80 g/l.
10. The sanitizing composition of Claim 1, wherein the composition comprises from about 0.001 to about 8 wt.%
of the solubilizing agent.
of the solubilizing agent.
11. The sanitizing composition of Claim 1, wherein the composition is substantially free of iodine.
12. The sanitizing composition of Claim 1, wherein the composition is substantially free of chlorine.
13. The sanitizing composition of Claim 1, wherein the composition is substantially free of peroxyacetic acid.
14. The sanitizing composition of Claim 1, wherein the composition is substantially free of dodecylbenzene and sulfonic acid.
15. A sanitizing composition, comprising:
(a) no more than about 14 wt.% of a sulfonated oleic acid:
(b) a solubilizing agent selected from the group consisting of propylene glycol, ethyl alcohol, isopropyl alcohol and mixtures thereof: and (c) an antimicrobial agent selected from the group consisting of phosphoric acid, citric acid, lactic acid, and esters and salts and mixtures thereof.
(a) no more than about 14 wt.% of a sulfonated oleic acid:
(b) a solubilizing agent selected from the group consisting of propylene glycol, ethyl alcohol, isopropyl alcohol and mixtures thereof: and (c) an antimicrobial agent selected from the group consisting of phosphoric acid, citric acid, lactic acid, and esters and salts and mixtures thereof.
16. A method for sanitizing an object, comprising:
contacting the object with an acidic, antimicrobial composition comprising no more than about 14 wt.% of a sulfonated fatty acid or ester or salt thereof, an antimicrobial agent, and an alcohol.
contacting the object with an acidic, antimicrobial composition comprising no more than about 14 wt.% of a sulfonated fatty acid or ester or salt thereof, an antimicrobial agent, and an alcohol.
17. The method of Claim 16, wherein the fatty acid is sulfonated oleic acid.
18. The method of Claim 16, wherein the antimicrobial agent is selected from the group consisting of phosphoric acid, citric acid, lactic acid, and esters and salts and mixtures thereof.
19. The method of Claim 16, wherein the aqueous composition comprises from about 0.04 to about 40 wt.% of the antimicrobial agent.
20. The method of Claim 16, wherein the alcohol is selected from the group consisting of propylene glycol, ethyl alcohol, isopropyl alcohol and mixtures thereof.
21. The method of Claim 16, wherein the aqueous composition comprises from about 0.001 to about 8 wt% of the alcohol.
22. A method for preparing a sanitizing composition, comprising:
(a) contacting a sulfonated fatty acid or ester or salt thereof with a solvent for the sulfonated fatty acid;
(b) contacting an alcohol with the solvent to form an intermediate sanitizing composition, wherein the time between contacting step (a) and contacting step (b) is no more than about 20 minutes.
(a) contacting a sulfonated fatty acid or ester or salt thereof with a solvent for the sulfonated fatty acid;
(b) contacting an alcohol with the solvent to form an intermediate sanitizing composition, wherein the time between contacting step (a) and contacting step (b) is no more than about 20 minutes.
23. The method of Claim 13, further comprising:
(c) contacting the intermediate sanitizing composition with an antimicrobial agent at an acidic pH.
(c) contacting the intermediate sanitizing composition with an antimicrobial agent at an acidic pH.
24. The method of Claim 14, wherein the solvent is selected from the group consisting of water, hydrogen peroxide, ethoxylated alcohols, and mixtures thereof.
25. The method of Claim 14, wherein the time between the contacting step (a) and the contacting step (c) is no more than about 10 minutes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2334798A | 1998-02-13 | 1998-02-13 | |
US09/023,347 | 1998-02-13 | ||
PCT/US1999/003091 WO1999040792A1 (en) | 1998-02-13 | 1999-02-12 | Sanitizing composition and method |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2285045A1 true CA2285045A1 (en) | 1999-08-19 |
Family
ID=21814561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002285045A Abandoned CA2285045A1 (en) | 1998-02-13 | 1999-02-12 | Sanitizing composition and method |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2764399A (en) |
CA (1) | CA2285045A1 (en) |
GB (1) | GB2338416A (en) |
WO (1) | WO1999040792A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2397496C (en) * | 2000-02-28 | 2007-07-24 | The Procter & Gamble Company | Acidic antimicrobial compositions for treating food and food contact surfaces and methods of use thereof |
US9259006B2 (en) * | 2008-01-30 | 2016-02-16 | Smartwash Solutions, Llc | Antimicrobial compositions and methods of use thereof |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US5441723A (en) * | 1989-01-31 | 1995-08-15 | Rost, Incorporated | Non-toxic hypocompatible biodegradable germicide |
-
1999
- 1999-02-12 AU AU27643/99A patent/AU2764399A/en not_active Abandoned
- 1999-02-12 GB GB9923979A patent/GB2338416A/en not_active Withdrawn
- 1999-02-12 WO PCT/US1999/003091 patent/WO1999040792A1/en active Application Filing
- 1999-02-12 CA CA002285045A patent/CA2285045A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
GB9923979D0 (en) | 1999-12-15 |
GB2338416A (en) | 1999-12-22 |
AU2764399A (en) | 1999-08-30 |
WO1999040792A1 (en) | 1999-08-19 |
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