EP4176034A1 - Composition - Google Patents
CompositionInfo
- Publication number
- EP4176034A1 EP4176034A1 EP21732328.6A EP21732328A EP4176034A1 EP 4176034 A1 EP4176034 A1 EP 4176034A1 EP 21732328 A EP21732328 A EP 21732328A EP 4176034 A1 EP4176034 A1 EP 4176034A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- diol
- quaternary ammonium
- composition according
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 81
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 21
- 150000002009 diols Chemical group 0.000 claims abstract description 21
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000003242 quaternary ammonium salts Chemical group 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000007865 diluting Methods 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract 2
- 239000003752 hydrotrope Substances 0.000 claims description 7
- QUCDWLYKDRVKMI-UHFFFAOYSA-M sodium;3,4-dimethylbenzenesulfonate Chemical compound [Na+].CC1=CC=C(S([O-])(=O)=O)C=C1C QUCDWLYKDRVKMI-UHFFFAOYSA-M 0.000 claims description 7
- 229960000686 benzalkonium chloride Drugs 0.000 claims description 5
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical group [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 claims description 5
- 150000001860 citric acid derivatives Chemical class 0.000 claims description 4
- 229940031723 1,2-octanediol Drugs 0.000 claims description 3
- 229960001927 cetylpyridinium chloride Drugs 0.000 claims description 3
- YMKDRGPMQRFJGP-UHFFFAOYSA-M cetylpyridinium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 YMKDRGPMQRFJGP-UHFFFAOYSA-M 0.000 claims description 3
- AEIJTFQOBWATKX-UHFFFAOYSA-N octane-1,2-diol Chemical compound CCCCCCC(O)CO AEIJTFQOBWATKX-UHFFFAOYSA-N 0.000 claims description 3
- UREZNYTWGJKWBI-UHFFFAOYSA-M benzethonium chloride Chemical compound [Cl-].C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 UREZNYTWGJKWBI-UHFFFAOYSA-M 0.000 claims description 2
- 229960001950 benzethonium chloride Drugs 0.000 claims description 2
- 229960000228 cetalkonium chloride Drugs 0.000 claims description 2
- SXPWTBGAZSPLHA-UHFFFAOYSA-M cetalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SXPWTBGAZSPLHA-UHFFFAOYSA-M 0.000 claims description 2
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 claims description 2
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 4
- 125000000217 alkyl group Chemical group 0.000 description 12
- 241000894006 Bacteria Species 0.000 description 10
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 9
- -1 amino poly-carboxylic acid Chemical class 0.000 description 9
- 239000004094 surface-active agent Substances 0.000 description 9
- 238000009472 formulation Methods 0.000 description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 7
- 150000002191 fatty alcohols Chemical class 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000845 anti-microbial effect Effects 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical class CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000003093 cationic surfactant Substances 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 125000001453 quaternary ammonium group Chemical group 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- DWANEFRJKWXRSG-UHFFFAOYSA-N 1,2-tetradecanediol Chemical compound CCCCCCCCCCCCC(O)CO DWANEFRJKWXRSG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 description 2
- 150000001449 anionic compounds Chemical group 0.000 description 2
- 239000004599 antimicrobial Substances 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 description 2
- 230000001332 colony forming effect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229910001412 inorganic anion Inorganic materials 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- NHGXDBSUJJNIRV-UHFFFAOYSA-M tetrabutylammonium chloride Chemical compound [Cl-].CCCC[N+](CCCC)(CCCC)CCCC NHGXDBSUJJNIRV-UHFFFAOYSA-M 0.000 description 2
- 239000006150 trypticase soy agar Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- ORUDEUCNYHCHPB-OUUBHVDSSA-N (2r,3s,4s,5r,6r)-2-(hydroxymethyl)-6-tetradecoxyoxane-3,4,5-triol Chemical compound CCCCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O ORUDEUCNYHCHPB-OUUBHVDSSA-N 0.000 description 1
- GKQHIYSTBXDYNQ-UHFFFAOYSA-M 1-dodecylpyridin-1-ium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+]1=CC=CC=C1 GKQHIYSTBXDYNQ-UHFFFAOYSA-M 0.000 description 1
- ZCPPLZJPPBIWRU-UHFFFAOYSA-M 1-hexadecyl-3-methylimidazol-3-ium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCN1C=C[N+](C)=C1 ZCPPLZJPPBIWRU-UHFFFAOYSA-M 0.000 description 1
- XZIIFPSPUDAGJM-UHFFFAOYSA-N 6-chloro-2-n,2-n-diethylpyrimidine-2,4-diamine Chemical compound CCN(CC)C1=NC(N)=CC(Cl)=N1 XZIIFPSPUDAGJM-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JDRSMPFHFNXQRB-CMTNHCDUSA-N Decyl beta-D-threo-hexopyranoside Chemical compound CCCCCCCCCCO[C@@H]1O[C@H](CO)C(O)[C@H](O)C1O JDRSMPFHFNXQRB-CMTNHCDUSA-N 0.000 description 1
- RUPBZQFQVRMKDG-UHFFFAOYSA-M Didecyldimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC RUPBZQFQVRMKDG-UHFFFAOYSA-M 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 241001103617 Pseudomonas aeruginosa ATCC 15442 Species 0.000 description 1
- 239000004147 Sorbitan trioleate Substances 0.000 description 1
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical class OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- IJCWFDPJFXGQBN-RYNSOKOISA-N [(2R)-2-[(2R,3R,4S)-4-hydroxy-3-octadecanoyloxyoxolan-2-yl]-2-octadecanoyloxyethyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCCCCCCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCCCCCCCCCCCC IJCWFDPJFXGQBN-RYNSOKOISA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-M bisulphate group Chemical group S([O-])(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 1
- 229940098773 bovine serum albumin Drugs 0.000 description 1
- 150000001720 carbohydrates Chemical group 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- YSRSBDQINUMTIF-UHFFFAOYSA-N decane-1,2-diol Chemical compound CCCCCCCCC(O)CO YSRSBDQINUMTIF-UHFFFAOYSA-N 0.000 description 1
- 229940073499 decyl glucoside Drugs 0.000 description 1
- UMGXUWVIJIQANV-UHFFFAOYSA-M didecyl(dimethyl)azanium;bromide Chemical compound [Br-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC UMGXUWVIJIQANV-UHFFFAOYSA-M 0.000 description 1
- 229960004670 didecyldimethylammonium chloride Drugs 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- ZITKDVFRMRXIJQ-UHFFFAOYSA-N dodecane-1,2-diol Chemical compound CCCCCCCCCCC(O)CO ZITKDVFRMRXIJQ-UHFFFAOYSA-N 0.000 description 1
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- GCXZDAKFJKCPGK-UHFFFAOYSA-N heptane-1,2-diol Chemical compound CCCCCC(O)CO GCXZDAKFJKCPGK-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- PYIDGJJWBIBVIA-UYTYNIKBSA-N lauryl glucoside Chemical compound CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O PYIDGJJWBIBVIA-UYTYNIKBSA-N 0.000 description 1
- 229940048848 lauryl glucoside Drugs 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LJZULWUXNKDPCG-UHFFFAOYSA-N nonane-1,2-diol Chemical compound CCCCCCCC(O)CO LJZULWUXNKDPCG-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 235000019337 sorbitan trioleate Nutrition 0.000 description 1
- 229960000391 sorbitan trioleate Drugs 0.000 description 1
- 239000001589 sorbitan tristearate Substances 0.000 description 1
- 235000011078 sorbitan tristearate Nutrition 0.000 description 1
- 229960004129 sorbitan tristearate Drugs 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- VMJQVRWCDVLJSI-UHFFFAOYSA-M tetraheptylazanium;chloride Chemical compound [Cl-].CCCCCCC[N+](CCCCCCC)(CCCCCCC)CCCCCCC VMJQVRWCDVLJSI-UHFFFAOYSA-M 0.000 description 1
- CEYYIKYYFSTQRU-UHFFFAOYSA-M trimethyl(tetradecyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCC[N+](C)(C)C CEYYIKYYFSTQRU-UHFFFAOYSA-M 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000008096 xylene Substances 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
- C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic 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
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2041—Dihydric alcohols
-
- 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
- C11D3/26—Organic compounds containing nitrogen
- C11D3/30—Amines; Substituted amines ; Quaternized amines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
Definitions
- the present invention relates to a composition for cleaning comestibles, in particular, fruit and vegetables.
- WO 2018/044840 discloses a method of reducing microbes on a food surface and a hard surface. It discloses antimicrobial composition comprising two cationic surfactant and one of the cationic surfactants is a quaternary ammonium cation. It further discloses that the composition may have a second cationic surfactant, an antibiotic and an amino poly-carboxylic acid.
- composition comprising 0.1 to 2% wt. non-ionic surfactant, a vicinal diol and a quaternary ammonium salt, for cleaning comestibles wherein the diol has 7 to 14 carbon atoms.
- compositions Often efficacy of such compositions depends on the amount of actives, i.e., surfactant, antimicrobial agents etc. present in the composition. Low amount of the actives may lead to insufficient cleaning. Whereas excess amount of the actives may leave residue of the actives on the comestibles, which is not preferred by the consumers. Therefore, it is also desired that the cleaning compositions provide enhanced antimicrobial efficacy, yet do not leave residue on the comestibles.
- actives i.e., surfactant, antimicrobial agents etc.
- compositions also comprising a diol and a quaternary ammonium salt.
- the composition comprises 0.1 to 2% wt. non-ionic surfactant.
- the surfactant is present at from 0.5 to 1.8% wt. , more preferably 0.5 to 1.5% wt. of the composition.
- Non-ionic surfactants generate less foam than anionic surfactants.
- Non-ionic surfactants are characterized by the presence of a hydrophobic group and an organic hydrophilic group and are typically produced by condensation of an organic aliphatic or alkyl aromatic hydrophobic compound with ethylene oxide.
- the non-ionic surfactant comprises alkoxylated alkanols in which the alkanol is of 9 to 20 carbon atoms and wherein the number of molecules of alkylene oxide (of 2 or 3 carbon atoms) is from 5 to 20.
- the alkanol is a fatty alcohol of 9 to 11 or 12 to 15 carbon atoms and which contain from 5 to 8 or 5 to 9 alkoxy groups per mole.
- paraffin-based alcohols e.g. non-ionic surfactants from Huntsman or Sassol.
- non-ionic surfactant is selected from an alkoxylated linear alcohol, more preferably an ethoxylated linear alcohol.
- Exemplary of such compounds are those in which the alkanol is of 10 to 15 carbon atoms and which contain about 5 to 12 ethylene oxide groups per mole, e.g. NeodolTM family, Tergitol 15-S-7 etc. These are condensation products of a mixture of higher fatty alcohols averaging about 12 to 15 carbon atoms with about 9 moles of ethylene oxide.
- the higher alcohols are primary alkanols.
- alkoxylated surfactants which may be used contain a precise alkyl chain length rather than an alkyl chain distribution of the alkoxylated surfactants.
- these are referred to as narrow range alkoxylates.
- these include the NeodolTM-1 series of surfactants.
- Non-ionic surfactants are represented by the commercially well-known class of nonionic surfactants sold under the trademark PlurafacTM from BASF.
- the PlurafacTM are the reaction products of a higher linear alcohol and a mixture of ethylene and propylene oxides, containing a mixed chain of ethylene oxide and propylene oxide, terminated by a hydroxyl group. Examples include C13 to C15 fatty alcohols condensed with 6 moles ethylene oxide and 3 moles propylene oxide, C13 to C15 fatty alcohol condensed with 7 moles propylene oxide and 4 moles ethylene oxide, C13 to C15 fatty alcohol condensed with 5 moles propylene oxide and 10 moles ethylene oxide or mixtures of any of the above.
- Another group of non-ionic surfactants are commercially available as DobanolTM which is an ethoxylated C fatty alcohol with an average of 7 moles ethylene oxide per mole of fatty alcohol.
- the non-ionic surfactant comprises alkyl polyglycosides (APG).
- Alkyl polyglycosides are compounds having formula: R10(R20)b(Z)a, wherein R1 is a alkyl radical, having from about 1 to about 30 carbon atoms; R2 is an alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; and a is a number having a value from 1 to about 6 (the degree of polymerization).
- alkyl polyglycosides are generally present as mixtures of alkyl polyglycosides having varying amounts of carbon atoms in the alkyl radical and varying degrees of polymerization.
- the alkyl radical is generally referred to as having a range of carbon atoms (e.g. C4/22 referring to a range of alkyl radicals having from 4 to 22 carbon atoms) and the degree of polymerization is generally referred to as the average degree of polymerization of the mixture.
- the non-ionic surfactant comprises alkyl polyglucoside surfactant.
- alkyl polyglucoside surfactant examples include decyl glucoside, lauryl glucoside, myristyl glucoside.
- non-ionic surfactants are sorbitan mono and tri alkanoic acid containing 10 to 20 carbon atoms condensed with ethylene oxide.
- suitable non-ionic surfactants are polyoxyethylene (4) sorbitan monolaurate, polyoxyethylene (20) sorbitan trioleate and polyoxyethylene (20) sorbitan tristearate.
- non-ionic surfactant is polyethylene glycol derivative of hydrogenated castor oil.
- the composition comprises a vicinal diol.
- a vicinal diol has a pair of hydroxy groups in the 1 and 2 position on a carbon chain.
- the diol has from 7 to 14 carbon atoms.
- the diol is selected from 1 ,2 heptanediol, 1 , 2 octanediol, 1 ,2 nonanediol, 1 ,2 decanediol, 1 ,2 dodecandiol, 1 ,2 tetradecanediol and combination thereof.
- the diol has from 8 to 10 carbon atoms.
- the most preferred diol is 1 , 2-octanediol.
- the diol is present at from 0.01 to 3.0% wt. of the composition. More preferably, the diol is present at from 0.1 to 1.0% wt. of the composition and most preferably from 0.3 to 0.8% wt. of the composition.
- the composition comprises a quaternary ammonium salt.
- the quaternary ammonium salt is present at from 0.05 to 5.0% wt. of the composition. More preferably the ammonium salt is present at from 0.1 to 4.0% wt. , even more preferably 0.5 to 3.0 % wt. of the composition.
- Quaternary ammonium salts have the general formula: R1 R2R3R4N+X- wherein R1 is a C12 to C18 alkyl group, each of R2, R3 and R4 independently is a C1 to C3 alkyl group and X is an inorganic anion.
- R1 is preferably a C14 to C16 straight chain alkyl group, more preferably C16.
- R2, R3 and R4 are preferably methyl groups.
- the inorganic anion (X-) is preferably chosen from halide, sulphate, bisulphate or hydroxide.
- a quaternary ammonium hydroxide is considered to be a quaternary ammonium salt. More preferably the anion is a halide ion or sulphate, most preferably a chloride or sulphate. Cetyl-trimethylammonium chloride is a specific example of a suitable compound and commercially abundantly available.
- Suitable quaternary ammonium cationic surfactant is the class of benzalkonium halides, also known as alkyl dimethyl benzyl ammonium halides. The most common type being benzalkonium chloride, also known as alkyl dimethyl benzyl ammonium chloride (or ADBAC)
- Example of suitable quaternary ammonium includes Cetyl-trimethyl-ammonium Chloride, Cetyl- trimethyl-ammonium Bromide, Tetradecyl-trimethyl-ammonium Chloride, Dodecyl-trimethyl- ammonium Chloride, Stearyl-trimethyl-ammonium Chloride, Octadecyltrimethyl- ammonium Chloride, Dodecylpyridinium Chloride, Cetylpyridinium Chloride, Benzalkonium Chloride, Tetrabutyl- ammonium Chloride, Tetraheptyl-ammonium Chloride, 1,3-Decyl-2-methyl-imidazolium Chloride, 1- Hexadecyl-3-methyl-imidazolium Chloride, Didecyl-dimethyl-ammonium Bromide, Didecyl-dimethyl- ammonium Chloride.
- the quaternary ammonium salt selected from benzalkonium chloride, benzethonium chloride, cetalkonium chloride, cetylpyridinium chloride and tetraethyl ammonium bromide and mixtures thereof.
- Most preferred quaternary ammonium salt is benzalkonium chloride.
- the composition comprises a citrate salt.
- the citrate salt is present at from 0.5 to 5.0% wt. of the composition, more preferably from 0.75 to 4% wt., even more preferably 1.0 to 3.0% wt. by weight of the composition.
- a preferred citrate salt is sodium citrate.
- the composition may comprise a hydrotrope.
- the hydrotrope is present at from 0.1 to 5.0% wt. of the composition. More preferably the hydrotrope is present at from 1.0 to 3.0% wt.
- Hydrotrope are typically low molecular weight, water-soluble or water-miscible organic compounds such as C1 to C5 monohydric alcohols (such as ethanol and n- or i-propanol); C2 to C6 diols (such as monopropylene glycol and dipropylene glycol); C3 to C9 triols (such as glycerol); polyethylene glycols having a weight average molecular weight (Mw) ranging from about 200 to 600; C1 to C3 alkanolamines such as mono-, di- and triethanolamines; and alkyl aryl sulfonates having up to 3 carbon atoms in the lower alkyl group (such as the sodium and potassium xylene, toluene, ethylbenzene and isopropyl benzene (cumene) sulfonates).
- C1 to C5 monohydric alcohols such as ethanol and n- or i-propanol
- Suitable hydrotrope include short carbon chain glycol like ethylene glycol, mono propylene glycol, di propylene glycol.
- the most preferred hydrotrope is 1-2, propanediol.
- the composition is an aqueous composition and comprises from 50 to 95% wt. water, more preferably from 60 to 90% wt., even more preferably 70 to 85% wt. water.
- the composition is in a single dose format.
- Single dose formats include compositions stored and packaged in sachets.
- the composition is contained in a water-soluble pouch, which dissolve in contact with water releasing the composition in water.
- a method for cleaning a comestible by diluting a composition according to the first aspect in water, washing said comestible in the diluted mixture of the composition in water, and then rinsing.
- the composition is diluted from 1 :5 to 1 : 200 in water.
- the diluted composition is used to wash the edible object and it is preferred that the edible object is not cut before putting into the wash composition.
- the edible object is left in the wash composition for from 5 minutes to 2 hours before being removed, optionally rinsed and drained.
- the composition may be packed in a bottle with a spray-head. In such case, a consumer directly sprays the composition on comestibles and wipe it with a tissue or a piece of cloth.
- the following formulations are prepared for cleaning fruit and vegetables.
- Formulation 1 is a composition according to the invention, whereas formulation A is a comparative.
- CFU/ml colony forming units/ml
- This neutralized buffer solution was diluted to get a countable bacterial number and plated on tryptic soy agar in duplicates for a statistically valid 30 to 300 colonies of bacteria on a single plate.
- test culture 1 ml of the test culture was mixed with 1 ml of 0.3% BSA and 1 ml of 3.0% BSA added to 8 ml hard water and were serially diluted and plated on TSA. The plates were incubated at 37°C for 48 hours, and the residual colonies were counted.
- the reduction of bacteria was calculated in log colony forming units/ml (Log CFU/ml).
- a log of the “Control” or input level of bacteria was calculated, and similarly a log value of the number of bacteria residuals in the samples containing the formulations under test was calculated.
- the log reduction value was calculated by subtracting the residual bacteria of each formulation from the input value. The higher the value means more reduction of bacteria
- composition 1 removes bacteria more efficiently compared to formulation A. From the examples it is evident that contrary to expectations, the use of a lower amount of a nonionic surfactant meant better cleaning of the food products.
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Abstract
The present invention relates to a composition for cleaning comestibles, in particular, fruit and vegetables. It discloses a composition for cleaning comestibles comprising 0.1 to 2% wt. non-ionic surfactant, a vicinal diol, and a quaternary ammonium salt, wherein the diol has 7 to 14 carbon atoms. It further discloses a method for cleaning a comestible by diluting a composition comprising 0.1 to 2% wt. non-ionic surfactant, a vicinal diol having 7 to 14 carbon atom and a quaternary ammonium salt in water, washing the comestibles in the diluted mixture of the composition in water, and then rinsing.
Description
COMPOSITION
The present invention relates to a composition for cleaning comestibles, in particular, fruit and vegetables.
WO 2018/044840 discloses a method of reducing microbes on a food surface and a hard surface. It discloses antimicrobial composition comprising two cationic surfactant and one of the cationic surfactants is a quaternary ammonium cation. It further discloses that the composition may have a second cationic surfactant, an antibiotic and an amino poly-carboxylic acid.
Despite the prior art, there remains a need for improved compositions for cleaning comestibles such as fruit and vegetables. In particular, there is a need to have a composition which can clean uncut fruit or vegetables of bacteria and viruses or such like without leaving any residues.
Accordingly, and in a first aspect, there is provided a composition comprising 0.1 to 2% wt. non-ionic surfactant, a vicinal diol and a quaternary ammonium salt, for cleaning comestibles wherein the diol has 7 to 14 carbon atoms.
Typically, consumers procure comestibles from a market and wash them with water before consumption. However, washing with water alone does not remove microbes efficiently. One way to improve cleaning efficacy, in particular, by removing microbes, is to use a cleaning composition comprising surfactant and antimicrobial agent. It is always desired to have improved cleaning compositions for providing enhanced antimicrobial efficacy.
Often efficacy of such compositions depends on the amount of actives, i.e., surfactant, antimicrobial agents etc. present in the composition. Low amount of the actives may lead to insufficient cleaning. Whereas excess amount of the actives may leave residue of the actives on the comestibles, which is not preferred by the consumers. Therefore, it is also desired that the cleaning compositions provide enhanced antimicrobial efficacy, yet do not leave residue on the comestibles.
We have surprisingly found that lowering the amount of surfactant can provide better antimicrobial efficacy in compositions also comprising a diol and a quaternary ammonium salt.
The composition comprises 0.1 to 2% wt. non-ionic surfactant. Preferably, the surfactant is present at from 0.5 to 1.8% wt. , more preferably 0.5 to 1.5% wt. of the composition.
Non-ionic surfactants generate less foam than anionic surfactants. Non-ionic surfactants are characterized by the presence of a hydrophobic group and an organic hydrophilic group and are typically produced by condensation of an organic aliphatic or alkyl aromatic hydrophobic compound with ethylene oxide.
Preferably, the non-ionic surfactant comprises alkoxylated alkanols in which the alkanol is of 9 to 20 carbon atoms and wherein the number of molecules of alkylene oxide (of 2 or 3 carbon atoms) is from 5 to 20. Of such materials, it is preferred to use those wherein the alkanol is a fatty alcohol of 9 to 11 or 12 to 15 carbon atoms and which contain from 5 to 8 or 5 to 9 alkoxy groups per mole.
Also preferred are paraffin-based alcohols (e.g. non-ionic surfactants from Huntsman or Sassol). Preferably the non-ionic surfactant is selected from an alkoxylated linear alcohol, more preferably an ethoxylated linear alcohol.
Exemplary of such compounds are those in which the alkanol is of 10 to 15 carbon atoms and which contain about 5 to 12 ethylene oxide groups per mole, e.g. Neodol™ family, Tergitol 15-S-7 etc. These are condensation products of a mixture of higher fatty alcohols averaging about 12 to 15 carbon atoms with about 9 moles of ethylene oxide. The higher alcohols are primary alkanols.
Another subclass of alkoxylated surfactants which may be used contain a precise alkyl chain length rather than an alkyl chain distribution of the alkoxylated surfactants.
Typically, these are referred to as narrow range alkoxylates. Examples of these include the Neodol™-1 series of surfactants.
Other useful non-ionic surfactants are represented by the commercially well-known class of nonionic surfactants sold under the trademark Plurafac™ from BASF. The Plurafac™ are the reaction products of a higher linear alcohol and a mixture of ethylene and propylene oxides, containing a mixed chain of ethylene oxide and propylene oxide, terminated by a hydroxyl group. Examples include C13 to C15 fatty alcohols condensed with 6 moles ethylene oxide and 3 moles propylene oxide, C13 to C15 fatty alcohol condensed with 7 moles propylene oxide and 4 moles ethylene oxide, C13 to C15 fatty alcohol condensed with 5 moles propylene oxide and 10 moles ethylene oxide or mixtures of any of the above.
Another group of non-ionic surfactants are commercially available as Dobanol™ which is an ethoxylated C fatty alcohol with an average of 7 moles ethylene oxide per mole of fatty alcohol.
Preferably the non-ionic surfactant comprises alkyl polyglycosides (APG). Alkyl polyglycosides are compounds having formula: R10(R20)b(Z)a, wherein R1 is a alkyl radical, having from about 1 to about 30 carbon atoms; R2 is an alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; and a is a number having a value from 1 to about 6 (the degree of polymerization). Due to the method by which they are synthesized, alkyl polyglycosides are generally present as mixtures of alkyl polyglycosides having varying amounts of carbon atoms in the alkyl radical and varying degrees of polymerization. Thus, when referring to alkyl polyglycosides, the alkyl radical is generally referred to as having a range of carbon atoms (e.g. C4/22 referring to a range of alkyl radicals having from 4 to 22 carbon atoms) and the degree of polymerization is generally referred to as the average degree of polymerization of the mixture.
Preferably the non-ionic surfactant comprises alkyl polyglucoside surfactant. Example of such surfactants are decyl glucoside, lauryl glucoside, myristyl glucoside.
Other suitable non-ionic surfactants are sorbitan mono and tri alkanoic acid containing 10 to 20 carbon atoms condensed with ethylene oxide. Examples of such compounds are polyoxyethylene (4) sorbitan monolaurate, polyoxyethylene (20) sorbitan trioleate and polyoxyethylene (20) sorbitan tristearate.
Another example of suitable non-ionic surfactant is polyethylene glycol derivative of hydrogenated castor oil.
The composition comprises a vicinal diol. A vicinal diol has a pair of hydroxy groups in the 1 and 2 position on a carbon chain. The diol has from 7 to 14 carbon atoms.
Preferably the diol is selected from 1 ,2 heptanediol, 1 , 2 octanediol, 1 ,2 nonanediol, 1 ,2 decanediol, 1 ,2 dodecandiol, 1 ,2 tetradecanediol and combination thereof. Preferably, the diol has from 8 to 10 carbon atoms. The most preferred diol is 1 , 2-octanediol.
Preferably, the diol is present at from 0.01 to 3.0% wt. of the composition. More preferably, the diol is present at from 0.1 to 1.0% wt. of the composition and most preferably from 0.3 to 0.8% wt. of the composition.
The composition comprises a quaternary ammonium salt. Preferably the quaternary ammonium salt is present at from 0.05 to 5.0% wt. of the composition. More preferably the ammonium salt is present at from 0.1 to 4.0% wt. , even more preferably 0.5 to 3.0 % wt. of the composition.
Quaternary ammonium salts have the general formula: R1 R2R3R4N+X- wherein R1 is a C12 to C18 alkyl group, each of R2, R3 and R4 independently is a C1 to C3 alkyl group and X is an inorganic anion. R1 is preferably a C14 to C16 straight chain alkyl group, more preferably C16. R2, R3 and R4 are preferably methyl groups. The inorganic anion (X-) is preferably chosen from halide, sulphate, bisulphate or hydroxide.
For the purposes of this invention, a quaternary ammonium hydroxide is considered to be a quaternary ammonium salt. More preferably the anion is a halide ion or sulphate, most preferably a chloride or sulphate. Cetyl-trimethylammonium chloride is a specific example of a suitable compound and commercially abundantly available.
Suitable quaternary ammonium cationic surfactant is the class of benzalkonium halides, also known as alkyl dimethyl benzyl ammonium halides. The most common type being benzalkonium chloride, also known as alkyl dimethyl benzyl ammonium chloride (or ADBAC)
Example of suitable quaternary ammonium includes Cetyl-trimethyl-ammonium Chloride, Cetyl- trimethyl-ammonium Bromide, Tetradecyl-trimethyl-ammonium Chloride, Dodecyl-trimethyl- ammonium Chloride, Stearyl-trimethyl-ammonium Chloride, Octadecyltrimethyl- ammonium Chloride, Dodecylpyridinium Chloride, Cetylpyridinium Chloride, Benzalkonium Chloride, Tetrabutyl- ammonium Chloride, Tetraheptyl-ammonium Chloride, 1,3-Decyl-2-methyl-imidazolium Chloride, 1- Hexadecyl-3-methyl-imidazolium Chloride, Didecyl-dimethyl-ammonium Bromide, Didecyl-dimethyl- ammonium Chloride.
Preferably, the quaternary ammonium salt selected from benzalkonium chloride, benzethonium chloride, cetalkonium chloride, cetylpyridinium chloride and tetraethyl ammonium bromide and mixtures thereof. Most preferred quaternary ammonium salt is benzalkonium chloride.
Preferably, the composition comprises a citrate salt. Preferably, the citrate salt is present at from 0.5 to 5.0% wt. of the composition, more preferably from 0.75 to 4% wt., even more preferably 1.0 to 3.0% wt. by weight of the composition. A preferred citrate salt is sodium citrate.
The composition may comprise a hydrotrope. Preferably, the hydrotrope is present at from 0.1 to 5.0% wt. of the composition. More preferably the hydrotrope is present at from 1.0 to 3.0% wt.
Hydrotrope are typically low molecular weight, water-soluble or water-miscible organic compounds such as C1 to C5 monohydric alcohols (such as ethanol and n- or i-propanol); C2 to C6 diols (such as monopropylene glycol and dipropylene glycol); C3 to C9 triols (such as glycerol); polyethylene glycols having a weight average molecular weight (Mw) ranging from about 200 to 600; C1 to C3 alkanolamines such as mono-, di- and triethanolamines; and alkyl aryl sulfonates having up to 3 carbon atoms in the lower alkyl group (such as the sodium and potassium xylene, toluene, ethylbenzene and isopropyl benzene (cumene) sulfonates).
Suitable hydrotrope include short carbon chain glycol like ethylene glycol, mono propylene glycol, di propylene glycol. The most preferred hydrotrope is 1-2, propanediol.
Preferably the composition is an aqueous composition and comprises from 50 to 95% wt. water, more preferably from 60 to 90% wt., even more preferably 70 to 85% wt. water.
Preferably, the composition is in a single dose format. Single dose formats include compositions stored and packaged in sachets. In single dose format, preferably, the composition is contained in a water-soluble pouch, which dissolve in contact with water releasing the composition in water.
In a second aspect there is provided a method for cleaning a comestible by diluting a composition according to the first aspect in water, washing said comestible in the diluted mixture of the composition in water, and then rinsing.
Preferably, the composition is diluted from 1 :5 to 1 : 200 in water.
The diluted composition is used to wash the edible object and it is preferred that the edible object is not cut before putting into the wash composition. Preferably, the edible object is left in the wash composition for from 5 minutes to 2 hours before being removed, optionally rinsed and drained.
Alternatively, the composition may be packed in a bottle with a spray-head. In such case, a consumer directly sprays the composition on comestibles and wipe it with a tissue or a piece of cloth.
EXAMPLES
The following formulations are prepared for cleaning fruit and vegetables.
Table 1
Formulation 1 is a composition according to the invention, whereas formulation A is a comparative.
Test method for evaluating antimicrobial efficacy:
Antimicrobial efficacy was tested following European Suspension Test (EST) or EN 1276 B.
The tests were conducted on following bacteria:
Escherichia coli ATCC 10536 (Gram-negative)
Pseudomonas aeruginosa ATCC 15442 (Gram-negative)
A 24-hour old growth or culture of bacteria was taken, and the bacterial cells were suspended in a solution to obtain 108 colony forming units/ml (CFU/ml), based on a 620 nm optical density (OD) calibration chart (0.8 OD at 620 nm for Escherichia coli and 0.5 OD at 620 nm for Pseudomonas aemginosa).
For testing a formulation, it was diluted to the required concentrations in water at 37°C.
Eight millilitres (ml) of the diluted formulation was mixed with a previously mixed 1 ml of test bacterial culture with 1 ml of 0.3% or 3.0% (w/v) BSA or bovine serum albumin (protein, also called as soil load). The contact time was monitored by a stopwatch.
After the specified contact time, 1 ml of the above mixture (of total volume 10 ml) was immediately neutralized in with suitable buffer solutions containing neutralizers as specified in the protocol.
This neutralized buffer solution was diluted to get a countable bacterial number and plated on tryptic soy agar in duplicates for a statistically valid 30 to 300 colonies of bacteria on a single plate.
In case of control, 1 ml of the test culture was mixed with 1 ml of 0.3% BSA and 1 ml of 3.0% BSA added to 8 ml hard water and were serially diluted and plated on TSA. The plates were incubated at 37°C for 48 hours, and the residual colonies were counted.
The reduction of bacteria was calculated in log colony forming units/ml (Log CFU/ml). A log of the “Control” or input level of bacteria was calculated, and similarly a log value of the number of bacteria residuals in the samples containing the formulations under test was calculated. The log reduction value was calculated by subtracting the residual bacteria of each formulation from the input value. The higher the value means more reduction of bacteria
Test results are summarized in below table:
Table 2
Table 2 shows that composition 1 removes bacteria more efficiently compared to formulation A. From the examples it is evident that contrary to expectations, the use of a lower amount of a nonionic surfactant meant better cleaning of the food products.
Claims
1. A composition for cleaning comestibles comprising 0.1 to 2% wt. non-ionic surfactant, a vicinal diol and a quaternary ammonium salt, wherein the diol has 7 to 14 carbon atoms.
2. A composition according to claim 1 or 2 wherein the diol is present at from 0.01 to 3.0% wt. of the composition.
3. A composition according to any preceding claim wherein the diol has from 7 to 10 carbon atoms.
4. A composition according to any preceding claim wherein the diol is 1 , 2-octanediol.
5. A composition according to any preceding claim wherein the quaternary ammonium salt is present at from 0.05 to 5.0% wt. of the composition.
6. A composition according to any preceding claim wherein the quaternary ammonium salt is selected from benzalkonium chloride, benzethonium chloride, cetalkonium chloride, cetylpyridinium chloride and tetraethyl ammonium bromide and mixtures thereof.
7. A composition according to any preceding claim comprising a citrate salt.
8. A composition according to any preceding claim comprising a hydrotrope.
9. A composition according to any preceding claim in a single dose format.
10. A method for cleaning a comestible by diluting a composition comprising 0.1 to 2% wt. nonionic surfactant, a vicinal diol having 7 to 14 carbon atom and a quaternary ammonium salt in water, washing said comestible in the diluted mixture of the composition in water, and then rinsing.
11. A method according to claim 12 wherein the composition is diluted from 1 : 5 to 1 :200 in water.
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WO2008135085A1 (en) * | 2007-05-04 | 2008-11-13 | Symrise Gmbh & Co. Kg | Synergistic active preparations comprising 1,2-decanediol and further antimicrobial active compounds |
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WO2018044840A1 (en) * | 2016-08-31 | 2018-03-08 | Cryovac, Inc. | Synergistic cationic surfactants resulting in microbial inhibition on food surfaces and hard surfaces |
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