WO2022190894A1 - 殺菌用過酸化水素水溶液並びにこれを用いた対象物の殺菌方法および殺菌された対象物の製造方法 - Google Patents
殺菌用過酸化水素水溶液並びにこれを用いた対象物の殺菌方法および殺菌された対象物の製造方法 Download PDFInfo
- Publication number
- WO2022190894A1 WO2022190894A1 PCT/JP2022/007815 JP2022007815W WO2022190894A1 WO 2022190894 A1 WO2022190894 A1 WO 2022190894A1 JP 2022007815 W JP2022007815 W JP 2022007815W WO 2022190894 A1 WO2022190894 A1 WO 2022190894A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrogen peroxide
- peroxide solution
- sterilization
- aqueous hydrogen
- potassium
- Prior art date
Links
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 92
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910001414 potassium ion Inorganic materials 0.000 claims abstract description 35
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 21
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 claims description 17
- 239000003595 mist Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- 239000003206 sterilizing agent Substances 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 abstract description 36
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 19
- 238000000151 deposition Methods 0.000 description 18
- 150000002500 ions Chemical class 0.000 description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 14
- -1 potassium phosphate compound Chemical class 0.000 description 14
- 239000007921 spray Substances 0.000 description 14
- 238000005406 washing Methods 0.000 description 14
- 230000008021 deposition Effects 0.000 description 12
- 229940085991 phosphate ion Drugs 0.000 description 12
- 239000007864 aqueous solution Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 7
- 235000011007 phosphoric acid Nutrition 0.000 description 7
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical class [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 7
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 6
- 229920000388 Polyphosphate Polymers 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- 239000001205 polyphosphate Substances 0.000 description 6
- 235000011176 polyphosphates Nutrition 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical class O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 4
- 239000000645 desinfectant Substances 0.000 description 4
- YXXXKCDYKKSZHL-UHFFFAOYSA-M dipotassium;dioxido(oxo)phosphanium Chemical compound [K+].[K+].[O-][P+]([O-])=O YXXXKCDYKKSZHL-UHFFFAOYSA-M 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000005819 Potassium phosphonate Substances 0.000 description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- 125000000962 organic group Chemical group 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 2
- MGRVRXRGTBOSHW-UHFFFAOYSA-N (aminomethyl)phosphonic acid Chemical compound NCP(O)(O)=O MGRVRXRGTBOSHW-UHFFFAOYSA-N 0.000 description 2
- CIEZZGWIJBXOTE-UHFFFAOYSA-N 2-[bis(carboxymethyl)amino]propanoic acid Chemical compound OC(=O)C(C)N(CC(O)=O)CC(O)=O CIEZZGWIJBXOTE-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- ZCLVNIZJEKLGFA-UHFFFAOYSA-H bis(4,5-dioxo-1,3,2-dioxalumolan-2-yl) oxalate Chemical class [Al+3].[Al+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O ZCLVNIZJEKLGFA-UHFFFAOYSA-H 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- RPUZVWKKWXPKIP-UHFFFAOYSA-H dialuminum;hydrogen phosphate Chemical compound [Al+3].[Al+3].OP([O-])([O-])=O.OP([O-])([O-])=O.OP([O-])([O-])=O RPUZVWKKWXPKIP-UHFFFAOYSA-H 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical class [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 2
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 150000003009 phosphonic acids Chemical class 0.000 description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 2
- AGYXQBQICUSMFP-UHFFFAOYSA-J potassium 2-[(4,5-dioxo-1,3,2-dioxalumolan-2-yl)oxy]-2-oxoacetate Chemical compound C(C(=O)[O-])(=O)[O-].[Al+3].[K+].C(C(=O)[O-])(=O)[O-] AGYXQBQICUSMFP-UHFFFAOYSA-J 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910000160 potassium phosphate Inorganic materials 0.000 description 2
- 235000011009 potassium phosphates Nutrition 0.000 description 2
- 159000000001 potassium salts Chemical class 0.000 description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- XGFPOHQJFNFBKA-UHFFFAOYSA-B tetraaluminum;phosphonato phosphate Chemical class [Al+3].[Al+3].[Al+3].[Al+3].[O-]P([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])([O-])=O XGFPOHQJFNFBKA-UHFFFAOYSA-B 0.000 description 2
- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical class [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 description 2
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 2
- 235000019798 tripotassium phosphate Nutrition 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical class [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 description 1
- HNSDLXPSAYFUHK-UHFFFAOYSA-N 1,4-bis(2-ethylhexyl) sulfosuccinate Chemical compound CCCCC(CC)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(CC)CCCC HNSDLXPSAYFUHK-UHFFFAOYSA-N 0.000 description 1
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 239000005763 Disodium phosphonate Substances 0.000 description 1
- 229940120146 EDTMP Drugs 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KIDJHPQACZGFTI-UHFFFAOYSA-N [6-[bis(phosphonomethyl)amino]hexyl-(phosphonomethyl)amino]methylphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCCCCCN(CP(O)(O)=O)CP(O)(O)=O KIDJHPQACZGFTI-UHFFFAOYSA-N 0.000 description 1
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 1
- YWMWZKYVGNWJPU-UHFFFAOYSA-N [bis[6-[bis(phosphonomethyl)amino]hexyl]amino]methylphosphonic acid Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCCCCCN(CP(O)(=O)O)CCCCCCN(CP(O)(O)=O)CP(O)(O)=O YWMWZKYVGNWJPU-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- VRAIHTAYLFXSJJ-UHFFFAOYSA-N alumane Chemical compound [AlH3].[AlH3] VRAIHTAYLFXSJJ-UHFFFAOYSA-N 0.000 description 1
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical class [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 description 1
- DNEHKUCSURWDGO-UHFFFAOYSA-N aluminum sodium Chemical compound [Na].[Al] DNEHKUCSURWDGO-UHFFFAOYSA-N 0.000 description 1
- SXQXMCWCWVCFPC-UHFFFAOYSA-N aluminum;potassium;dioxido(oxo)silane Chemical compound [Al+3].[K+].[O-][Si]([O-])=O.[O-][Si]([O-])=O SXQXMCWCWVCFPC-UHFFFAOYSA-N 0.000 description 1
- LCQXXBOSCBRNNT-UHFFFAOYSA-K ammonium aluminium sulfate Chemical compound [NH4+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O LCQXXBOSCBRNNT-UHFFFAOYSA-K 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000006701 autoxidation reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 229940090960 diethylenetriamine pentamethylene phosphonic acid Drugs 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- ZWKKRUNHAVNSFW-UHFFFAOYSA-N dimethyl 2-methylpentanedioate Chemical compound COC(=O)CCC(C)C(=O)OC ZWKKRUNHAVNSFW-UHFFFAOYSA-N 0.000 description 1
- 239000001177 diphosphate Substances 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- OZYJVQJGKRFVHQ-UHFFFAOYSA-L dipotassium trioxidophosphanium Chemical class [K+].[K+].[O-]P([O-])=O OZYJVQJGKRFVHQ-UHFFFAOYSA-L 0.000 description 1
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical class [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- IIRVGTWONXBBAW-UHFFFAOYSA-M disodium;dioxido(oxo)phosphanium Chemical compound [Na+].[Na+].[O-][P+]([O-])=O IIRVGTWONXBBAW-UHFFFAOYSA-M 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- BPLYVSYSBPLDOA-GYOJGHLZSA-N n-[(2r,3r)-1,3-dihydroxyoctadecan-2-yl]tetracosanamide Chemical compound CCCCCCCCCCCCCCCCCCCCCCCC(=O)N[C@H](CO)[C@H](O)CCCCCCCCCCCCCCC BPLYVSYSBPLDOA-GYOJGHLZSA-N 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical class [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- YPPQYORGOMWNMX-UHFFFAOYSA-L sodium phosphonate pentahydrate Chemical compound [Na+].[Na+].[O-]P([O-])=O YPPQYORGOMWNMX-UHFFFAOYSA-L 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- SPOMEWBVWWDQBC-UHFFFAOYSA-K tripotassium;dihydrogen phosphate;hydrogen phosphate Chemical class [K+].[K+].[K+].OP(O)([O-])=O.OP([O-])([O-])=O SPOMEWBVWWDQBC-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 239000007102 tryptic soy broth medium Substances 0.000 description 1
- 239000002699 waste material Substances 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
Definitions
- the present invention relates to an aqueous hydrogen peroxide solution for sterilization, a method for sterilizing an object using the same, and a method for producing a sterilized object.
- an aqueous solution containing hydrogen peroxide has been used as a disinfectant.
- the aqueous hydrogen peroxide solution for sterilization is usually brought into contact with the object in the form of mist or vapor to sterilize the object.
- a hydrogen peroxide stabilizer is usually added to the aqueous hydrogen peroxide solution for sterilization.
- US Pat. No. 6,200,000 discloses an aqueous solution suitable for chemical sterilization of packaging materials, the solution comprising hydrogen peroxide and at least one food-compatible stabilizer, excluding said food-compatible stabilizer, said solution containing PO
- An aqueous solution is described which is characterized by a maximum phosphorus content of 10 mg/kg expressed as 4 3- and a dry residue at 105° C. of up to 10 mg/kg.
- Patent Document 1 in the method of sterilizing the packaging material by spraying it with an aqueous hydrogen peroxide solution, deposits remain on the spray nozzle and evaporator due to the dry residue derived from the stabilizer contained in the aqueous hydrogen peroxide solution. , stating that the stabilizer must be reduced to avoid this. Moreover, Patent Document 1 describes that the amount of the food-compatible stabilizer to be added can be reduced by using an aqueous hydrogen peroxide solution containing few impurities.
- the present invention provides an aqueous hydrogen peroxide solution for sterilization that can be suitably used even when deposits derived from a stabilizer are present.
- the present inventors have conducted intensive research to solve the above problems. As a result, the present inventors have found that the above problems can be solved by adjusting the content of potassium ions in the aqueous hydrogen peroxide solution for sterilization to a predetermined range, and have completed the present invention. That is, the present invention is, for example, as follows.
- An aqueous hydrogen peroxide solution for sterilization containing hydrogen peroxide, potassium ions, and water
- An aqueous hydrogen peroxide solution for sterilization, wherein the potassium ion content is 95 to 310 mass ppb with respect to the total mass of the aqueous hydrogen peroxide solution for sterilization.
- a method of sterilizing an object comprising contacting the object with a sterilizing agent containing at least one of mist and gas of the aqueous hydrogen peroxide solution for sterilization according to any one of [1] to [3] above.
- a sterilized object comprising contacting the object with a sterilizing agent containing at least one of mist and gas of the aqueous hydrogen peroxide solution for sterilization according to any one of [1] to [3] above. manufacturing method.
- an aqueous hydrogen peroxide solution for sterilization that can be suitably used even when deposits derived from the stabilizer are present.
- the sterilizing aqueous hydrogen peroxide solution contains hydrogen peroxide, potassium ions, and water. At this time, the content of potassium ions is 95 to 310 mass ppb with respect to the total mass of the sterilizing hydrogen peroxide aqueous solution.
- the sterilization effect of the aqueous hydrogen peroxide solution for sterilization is enhanced by setting the content of potassium ions within a predetermined range in the aqueous hydrogen peroxide solution containing potassium ions.
- a predetermined content of potassium ions contained in the aqueous hydrogen peroxide solution for sterilization interacts with deposits on the spray nozzle or the like.
- the aqueous hydrogen peroxide solution for sterilization can be suitably used even when there are deposits derived from the stabilizer.
- the sterilizing aqueous hydrogen peroxide solution may further contain aluminum, phosphate ions, sulfate ions, other ions, additives, and the like.
- Hydrogen peroxide Hydrogen peroxide (H 2 O 2 ) has a function of sterilizing objects.
- Hydrogen peroxide is not particularly limited and is produced by a known method as appropriate. Among these, the method by autoxidation of an anthraquinone derivative is preferred.
- the content of hydrogen peroxide is preferably 20% by mass or more, more preferably 25% by mass or more, and 25 to 45% by mass with respect to the total mass of the aqueous hydrogen peroxide solution for sterilization. is more preferable, and 25 to 40% by mass is particularly preferable.
- a hydrogen peroxide content of 20% by mass or more is preferable because the object can be suitably sterilized.
- Potassium ions (K + ) have functions such as interacting with deposits such as spray nozzles to enhance the sterilizing effect of the aqueous hydrogen peroxide solution.
- the content of potassium ions is 95 to 310 mass ppb with respect to the total mass of the aqueous hydrogen peroxide solution for sterilization, and from the viewpoint of increasing the washing removal rate, it is preferably 95 to 250 mass ppb, more preferably. It is 125 to 250 mass ppb, more preferably 125 to 175 mass ppb.
- the “potassium ion content” is measured by the method described in Examples.
- Potassium ion sources are not particularly limited, but potassium sulfate, potassium aluminum sulfate and other potassium sulfate compounds; potassium nitrate and other potassium nitrate compounds; potassium aluminum silicate and other potassium silicate compounds; and aluminum potassium oxalate and other potassium oxalate compounds.
- Potassium phosphate compounds such as potassium dihydrogen phosphate, dipotassium hydrogen phosphate and tripotassium phosphate; Potassium phosphonate compounds such as potassium phosphonate and dipotassium phosphonate; Potassium pyrophosphate compounds such as tetrapotassium pyrophosphate; Potassium chloride; potassium hydroxide; potassium carbonate and the like.
- the potassium ion source is preferably potassium aluminum sulfate, a potassium phosphate compound, or a potassium phosphonate compound, and more preferably potassium aluminum sulfate. That is, in one embodiment, at least a portion of the potassium ions are preferably derived from potassium aluminum sulfate, and more preferably the potassium ions are derived from potassium aluminum sulfate.
- the potassium ion sources described above may be used singly or in combination of two or more.
- Aluminum has a function of preventing or suppressing the decomposition of hydrogen peroxide (function as a stabilizer).
- Aluminum is usually present in the form of aluminum ions (Al 3+ ) in the aqueous hydrogen peroxide solution for sterilization.
- the content of aluminum is preferably 10 to 500 mass ppb, more preferably 70 to 215 mass ppb, and 70 to 200 mass ppb with respect to the total mass of the aqueous hydrogen peroxide solution for sterilization. is more preferred, 80 to 200 mass ppb is particularly preferred, and 80 to 120 mass ppb is most preferred.
- An aluminum content of 10 mass ppb or more is preferable because decomposition of hydrogen peroxide can be suitably prevented or suppressed.
- the aluminum content is 500 mass ppb or less, dry residue can be reduced, and deposition of deposits on the spray nozzle or the like can be prevented or suppressed, which is preferable.
- the "aluminum content” is measured by the method described in Examples.
- the aluminum source is not particularly limited, but aluminum sulfate compounds such as aluminum sulfate, potassium aluminum sulfate, sodium aluminum sulfate and ammonium aluminum sulfate; aluminum nitrate compounds such as aluminum nitrate; aluminum silicate, sodium aluminum silicate and aluminum silicate.
- aluminum silicate compounds such as potassium; aluminum oxalate compounds such as aluminum oxalate and aluminum potassium oxalate; aluminum phosphate compounds such as aluminum phosphate and aluminum hydrogen phosphate; aluminum pyrophosphate compounds such as aluminum pyrophosphate; aluminum; aluminum oxide and the like.
- the aluminum source is preferably potassium aluminum sulfate, aluminum sulfate, or aluminum nitrate, and more preferably potassium aluminum sulfate.
- the above-mentioned aluminum sources may be used alone or in combination of two or more.
- Phosphate ions (orthophosphate ions) have a function of preventing or suppressing the decomposition of hydrogen peroxide (function as a stabilizer).
- the phosphate ion means an ion represented by "HPO 4 2 ⁇ " or "H 2 PO 4 ⁇ ".
- Phosphate ions may include phosphoric acid (H 3 PO 4 ) depending on the pH of the hydrogen peroxide solution for sterilization.
- the content of phosphate ions is preferably 1 to 10 mass ppm (1000 to 10000 mass ppb), and 1.5 to 8 mass ppm, relative to the total mass of the aqueous hydrogen peroxide solution for sterilization. More preferably, it is 2 to 5 ppm by mass.
- a phosphate ion content of 1 ppm by mass or more is preferable because decomposition of hydrogen peroxide can be suitably prevented or suppressed.
- the content of phosphate ions is 10 mass ppm or less, dry residue can be reduced, and deposition of deposits on spray nozzles and the like can be prevented or suppressed, which is preferable.
- the "phosphate ion content” is measured by the method described in Examples.
- the phosphate ion source is not particularly limited, but phosphoric acid; diphosphoric acid; sodium phosphate compounds such as sodium dihydrogen phosphate, disodium hydrogen phosphate, and trisodium phosphate; potassium dihydrogen phosphate, phosphoric acid potassium phosphate compounds such as dipotassium hydrogen and tripotassium phosphate; ammonium phosphate compounds such as ammonium dihydrogen phosphate and diammonium hydrogen phosphate; aluminum phosphate compounds such as aluminum phosphate and aluminum hydrogen phosphate; be done.
- the phosphoric acid source is preferably phosphoric acid, diphosphoric acid, sodium phosphate compound, potassium phosphate compound, or aluminum phosphate compound. , diphosphate.
- the above-mentioned phosphoric acid sources may be used alone, or two or more of them may be used in combination.
- sulfate ion Sulfate ions have the function of improving washability.
- a sulfate ion means an ion represented by “SO 4 2 ⁇ ” or “HSO 4 ⁇ ”.
- the content of sulfate ions is preferably 100 to 5000 mass ppb, more preferably 450 to 1500 mass ppb, and 450 to 1000 mass ppb with respect to the total mass of the aqueous hydrogen peroxide solution for sterilization. is more preferred, 700 to 1000 mass ppb is particularly preferred, and 750 to 1000 mass ppb is most preferred.
- a sulfate ion content of 100 mass ppb or more is preferable because the removal rate of deposits by washing with water can be improved.
- a sulfate ion content of 5000 mass ppb or less is preferable because a high sterilizing effect can be maintained.
- the "sulfate ion content" is measured by the method described in Examples.
- the content of sulfate ions is 10% with respect to the content of aluminum (sulfate ion content/aluminum content). It is preferably less than twice, more preferably 6 to 8 times. When the content ratio is less than 10 times, it is preferable because the amount of deposits on the spray nozzle or the like can be reduced.
- stabilizer examples include phosphonate ions, polyphosphate ions, and the like.
- the phosphonate ion source is not particularly limited, but phosphonic acid, sodium phosphonate, disodium phosphonate, potassium phosphonate, dipotassium phosphonate, phosphonate inorganic phosphonic acids such as ammonium acid;
- the phosphonate ion source is not particularly limited, but aminomethylphosphonic acid, hydroxyethylidene diphosphonic acid, aminotrimethylene phosphonic acid, ethylenediaminetetramethylene phosphonic acid. , diethylenetriaminepentamethylenephosphonic acid, hexamethylenediaminetetramethylenephosphonic acid, bishexamethylenetriaminepentamethylenephosphonic acid, propylenediaminetetramethylenephosphonic acid, and organic phosphonic acids such as sodium salts, potassium salts and ammonium salts thereof. .
- the phosphonic acid source is preferably organic phosphonic acid, more preferably aminomethylphosphonic acid.
- the above-mentioned phosphonic acid sources may be used alone or in combination of two or more.
- R is a hydrogen atom or an organic group
- n is an integer of 2 or more, preferably 2-6, more preferably 2-5.
- Polyphosphate ion sources include, but are not limited to, 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), ethylenediaminetetra(methylenephosphonic acid), diethylenetriaminepenta(methylenephosphonic acid) (DTPMPA), bis(hexamethylene triamine penta(methylene phosphonic acid)), and their sodium salts, potassium salts, ammonium salts and the like. These polyphosphate ion sources may be used alone or in combination of two or more.
- HEDP 1-hydroxyethylidene-1,1-diphosphonic acid
- DTPMPA diethylenetriaminepenta(methylenephosphonic acid)
- bis(hexamethylene triamine penta(methylene phosphonic acid) bis(hexamethylene triamine penta(methylene phosphonic acid)
- sodium salts potassium salts, ammonium salts and the like.
- counter ions for the above stabilizers include sodium ions, ammonium ions, nitrate ions, oxalate ions, and the like. These counterions may be contained singly or in combination of two or more.
- heavy metal impurity ions examples include iron ions, chromium ions, nickel ions, and palladium ions. These heavy metal impurity ions may be contained singly or in combination of two or more.
- heavy metal impurity ions are preferably not included because they promote the decomposition of hydrogen peroxide.
- the content of heavy metal impurity ions is preferably 10 mass ppb or less, preferably 5 ppb or less, relative to the total mass of the aqueous hydrogen peroxide solution for sterilization. It is more preferably 1 mass ppb or less, and particularly preferably 0.1 mass ppb or less.
- the water content is preferably 80% by mass or less, more preferably 75% by mass or less, more preferably 55 to 75% by mass, relative to the total mass of the aqueous hydrogen peroxide solution for sterilization. Preferably, 60 to 75% by mass is particularly preferable.
- a water content of 80% by mass or less is preferable because the hydrogen peroxide content can be increased and a sterilizing aqueous hydrogen peroxide solution with a high sterilizing effect can be obtained.
- Additives include chelating agents such as ethylenediaminetetraacetic acid (EDTA) and methylglycine diacetic acid (MGDA); disulfonates such as disodium hexadecyldiphenyloxide disulfonate, dihexadecyldiphenyloxide disulfonate, and decyldiphenyloxide disulfonate Surfactants; diester solvents such as dimethyl 2-methylglutarate; alcohol diluents such as methanol, ethanol and propanol; glycol ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether and diethylene glycol butyl ether. These additives may be used alone or in combination of two or more.
- EDTA ethylenediaminetetraacetic acid
- MGDA methylglycine diacetic acid
- disulfonates such as disodium hexadecyldiphenyloxide dis
- the pH of the aqueous hydrogen peroxide solution for sterilization is preferably 3.5 or less, more preferably 2.9 to 3.3.
- the pH of the aqueous hydrogen peroxide solution for sterilization is 3.5 or less, it is preferable because it can be stabilized for a long period of time under acidic conditions.
- the evaporation residue amount of the aqueous hydrogen peroxide solution for sterilization is preferably 10 ppm or less, more preferably 8 ppm or less.
- the "evaporation residue amount of the aqueous hydrogen peroxide solution for sterilization" is measured by the method described in JIS K1463:2007.
- the logarithmic reduction value of the aqueous hydrogen peroxide solution for sterilization is preferably 6.1 or more, more preferably 6.4 or more, and even more preferably 6.8 or more. .
- a logarithmic reduction value of 6.1 or more is preferable because the bactericidal effect is excellent.
- the "logarithmic reduction value of the aqueous hydrogen peroxide solution for sterilization" is measured by the method described in Examples.
- the aqueous hydrogen peroxide solution for sterilization has an excellent washing removal rate. Specifically, when there is a deposit derived from the stabilizer on the spray nozzle or the like, the deposit can be removed, so the aqueous hydrogen peroxide solution for sterilization can be used more preferably.
- the washing removal rate of the aqueous hydrogen peroxide solution for sterilization is preferably 66% or more, more preferably 70% or more, and even more preferably 74% or more.
- "washing removal rate of aqueous hydrogen peroxide solution for sterilization” is measured by the method described in Examples.
- a method of sterilizing an object includes contacting the object with a sterilizing agent containing at least one of mist and gas of the hydrogen peroxide aqueous solution for sterilization described above.
- the sterilant includes at least one of the mist and gas of the aqueous hydrogen peroxide solution for sterilization described above.
- the sterilant may further contain a carrier gas.
- Mist and gas Mist and gas can be prepared by, for example, a method of ultrasonically treating an aqueous hydrogen peroxide solution for sterilization, a method of heating an aqueous hydrogen peroxide solution for sterilization, or the like. At this time, at least part of the components contained in the aqueous hydrogen peroxide solution for sterilization, such as water, can be removed by volatilization.
- the disinfectant may contain only mist, only gas, or both mist and gas.
- Carrier Gas Carrier gases include, but are not limited to, air, nitrogen, oxygen, ozone, helium, argon, krypton, and the like. Among these, air is preferable from the viewpoint of low cost.
- the above carrier gases may be used alone or in combination of two or more.
- the temperature of the disinfectant varies depending on the application, but is preferably 30 to 250°C, more preferably 50 to 200°C, and even more preferably 100 to 150°C.
- the object may be a tangible object or an intangible object.
- the tangible objects include, but are not particularly limited to, packaging containers, food machinery, PET bottles, PET bottle preforms, laboratory instruments, medical instruments, sanitary instruments, cooking utensils, and food.
- Examples of the intangible objects include spaces such as the inside of automobiles, clean rooms for the electronics industry, living spaces, medical spaces, kitchens, kitchens, the inside of aircraft, toiletry facilities, waste disposal facilities, and livestock barns.
- the above-mentioned hydrogen peroxide aqueous solution for sterilization can be suitably used even when there are deposits derived from the stabilizer on the spray nozzle or the like, and the sterilization effect is particularly high. Therefore, sterilization can be effectively carried out with a small amount of the aqueous hydrogen peroxide solution for sterilization.
- a method for manufacturing a sterilized object includes contacting the object with a sterilizing agent containing at least one of mist and gas of the hydrogen peroxide aqueous solution for sterilization described above.
- the disinfectant and the object are the same as the method for sterilizing the object above.
- the object is preferably a tangible object.
- Example 1 Hydrogen peroxide obtained by distillation and purification is dissolved in pure water to prepare a 35 mass% hydrogen peroxide aqueous solution, and then 3 mass ppm of orthophosphoric acid and 0.7 mass ppm of potassium aluminum sulfate are added. to prepare an aqueous hydrogen peroxide solution.
- the potassium ion concentration and aluminum concentration in the aqueous hydrogen peroxide solution were measured using an ICP emission spectrometer iCAP6000 (manufactured by Thermo Fisher Scientific) and found to be 100 mass ppb and 73 mass ppb, respectively. Further, the sulfate ion concentration and the phosphate ion concentration were measured using ion chromatography DX-500 (manufactured by Dionex) and found to be 521 mass ppb and 2907 mass ppb, respectively. The results obtained are shown in Table 1 below.
- Example 2 An aqueous hydrogen peroxide solution was produced in the same manner as in Example 1, except that the amount of potassium aluminum sulfate added was changed to 1 mass ppm.
- Example 3 An aqueous hydrogen peroxide solution was produced in the same manner as in Example 1, except that the amount of potassium aluminum sulfate added was changed to 1.3 mass ppm.
- Example 4 An aqueous hydrogen peroxide solution was produced in the same manner as in Example 1, except that the amount of potassium aluminum sulfate added was changed to 2.0 mass ppm.
- hydrogen peroxide obtained by distillation and purification is dissolved in pure water to prepare a 35% by mass aqueous hydrogen peroxide solution, and then 501 mass ppm of orthophosphoric acid and 167 mass ppm of potassium aluminum sulfate are added.
- a hydrogen peroxide aqueous solution for producing a stabilizer depositing nozzle was produced by adding these.
- an aqueous hydrogen peroxide solution for fabricating a stabilizer depositing nozzle was fed to a nozzle heated to 300° C. at a flow rate of 5.0 g/min for about 24 hours to evaporate, thereby depositing the stabilizer on the inner surface of the nozzle. .
- the weight of the nozzle after depositing the stabilizer was measured, and the weight difference from the weight of the nozzle before depositing the stabilizer was defined as the amount of adhesion (g).
- the nozzle structure used is as follows.
- Nozzle structure Material SUS316 Size: 2S x 220mmH
- PET bottles 500 mL PET bottles were prepared to which 10 4 , 10 5 and 10 6 Bacillus subtilis spores were adhered.
- the produced aqueous hydrogen peroxide solution is mixed with air to the stabilizer deposition nozzle heated to 120° C. and sent at a constant rate (flow rate of aqueous hydrogen peroxide solution: 60 mL/min, air flow rate: 100 L/min).
- the inside of the bottle was sterilized by blowing into the inside of the bottle at an air volume of 0.1 m 3 /min for 0.6 seconds.
- the tryptic soy broth medium was aseptically dispensed into the sterilized bottle and cultured to evaluate the presence or absence of sterilization. Specifically, the number of surviving bacteria was calculated from the most probable number (MPN) probabilistically, and the logarithmic reduction value was obtained from the following equation.
- the bactericidal effect was determined according to the following criteria. The results obtained are shown in Table 2 below.
- the weight of the stabilizer deposition nozzle after washing and drying was measured again, and the weight difference from the nozzle weight before stabilizer deposition was taken as the residual amount (g).
- the washing removal rate (%) was calculated based on the following formula from the adhesion amount (g) of the stabilizer deposition nozzle and the residual amount (g) of the stabilizer deposition nozzle after cleaning. It can be said that the higher the water washing removal rate, the higher the water washing removal rate of the deposits derived from the stabilizer adhering to the stabilizer depositing nozzle by using the aqueous hydrogen peroxide solution.
- the washing removal rate was determined according to the following criteria. The results obtained are shown in Table 2 below.
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Abstract
Description
前記カリウムイオンの含有率が、前記殺菌用過酸化水素水溶液の全質量に対して、95~310質量ppbである、殺菌用過酸化水素水溶液。
[2]前記カリウムイオンが、硫酸カリウムアルミニウム由来である、上記[1]に記載の殺菌用過酸化水素水溶液。
[3]硫酸イオンおよびアルミニウムをさらに含み、
硫酸イオンの含有率が、アルミニウムの含有率に対して、10倍未満である、上記[1または[2]に記載の殺菌用過酸化水素水溶液。
[4]上記[1]~[3]のいずれかに記載の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む殺菌剤を対象物に接触させることを含む、対象物の殺菌方法。
[5]上記[1]~[3]のいずれかに記載の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む殺菌剤を対象物に接触させることを含む、殺菌された対象物の製造方法。
殺菌用過酸化水素水溶液は、過酸化水素、カリウムイオン、および水を含む。この際、カリウムイオンの含有率が、前記殺菌用過酸化水素水溶液の全質量に対して、95~310質量ppbである。
過酸化水素(H2O2)は対象物を殺菌する機能等を有する。
カリウムイオン(K+)は、噴霧ノズル等の付着物と相互作用して過酸化水素水溶液の殺菌効果を高める機能等を有する。
アルミニウムは、過酸化水素の分解を防止または抑制する機能(安定化剤としての機能)等を有する。なお、アルミニウムは、殺菌用過酸化水素水溶液中では、通常、アルミニウムイオン(Al3+)の形態で存在する。
リン酸イオン(オルトリン酸イオン)は、過酸化水素の分解を防止または抑制する機能(安定化剤としての機能)等を有する。なお、本明細書において、リン酸イオンは、「HPO4 2-」または「H2PO4 -」で表されるイオンを意味する。なお、殺菌用過酸化水素水のpH等によっては、リン酸イオンには、リン酸(H3PO4)が含まれることがある。
硫酸イオンは、水洗性向上の機能を有する。本明細書において、硫酸イオンは、「SO4 2-」または「HSO4 -」で表されるイオンを意味する。
殺菌用過酸化水素水が含有しうる他のイオンとしては、安定化剤、上述の安定化剤(アルミニウムおよびリン酸イオン)の対イオン、重金属不純物イオン等が挙げられる。
水の含有率は、殺菌用過酸化水素水溶液の全質量に対して、80質量%以下であることが好ましく、75質量%以下であることがより好ましく、55~75質量%であることがさらに好ましく、60~75質量%であることが特に好ましい。水の含有率が80質量%以下であると、過酸化水素の含有率を高くすることができ、殺菌効果の高い殺菌用過酸化水素水溶液が得られることから好ましい。
添加剤としては、エチレンジアミン四酢酸(EDTA)、メチルグリシン二酢酸(MGDA)等のキレート剤;ヘキサデシルジフェニルオキシドジスルホン酸二ナトリウム、ジヘキサデシルジフェニルオキシドジスルホネート、デシルジフェニルオキシドジスルホネート等のジスルホネート界面活性剤;2-メチルグルタル酸ジメチル等のジエステル溶媒;メタノール、エタノール、プロパノール等のアルコール系希釈剤;エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、ジエチレングリコールブチルエーテル等のグリコールエーテル等が挙げられる。これらの添加剤は単独で用いても、2種以上を組み合わせて用いてもよい。
殺菌用過酸化水素水溶液のpHは、3.5以下であることが好ましく、2.9~3.3であることがより好ましい。殺菌用過酸化水素水溶液のpHが3.5以下であると、酸性条件下で長期に安定できることから好ましい。
本発明の一形態によれば、対象物の殺菌方法が提供される。当該対象物の殺菌方法は、上述の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む殺菌剤を対象物に接触させることを含む。
殺菌剤は、上述の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む。殺菌剤はキャリアガスをさらに含んでいてもよい。
ミストおよび気体は、例えば、殺菌用過酸化水素水溶液を超音波処理する方法、殺菌用過酸化水素水溶液を加熱する方法等により調製することができる。この際、殺菌用過酸化水素水溶液中に含まれる成分、例えば、水の少なくとも一部は揮発によって除去されうる。
キャリアガスは、特に制限されないが、空気、窒素、酸素、オゾン、ヘリウム、アルゴン、クリプトン等が挙げられる。これらのうち、低コストである観点から、空気であることが好ましい。なお、上述のキャリアガスは単独で用いても、2種以上を組み合わせて用いてもよい。
対象物は有体物であっても無体物であってもよい。
本発明の一形態によれば、殺菌された対象物の製造方法が提供される。前記殺菌された対象物の製造方法は、上述の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む殺菌剤を対象物に接触させることを含む。
蒸留精製して得られた過酸化水素を純水に溶解して35質量%の過酸化水素水溶液を調製し、次いで3質量ppmのオルトリン酸、0.7質量ppmの硫酸カリウムアルミニウムを添加することで、過酸化水素水溶液を製造した。
硫酸カリウムアルミニウムの添加量を1質量ppmに変更したことを除いては、実施例1と同様の方法で過酸化水素水溶液を製造した。
硫酸カリウムアルミニウムの添加量を1.3質量ppmに変更したことを除いては、実施例1と同様の方法で過酸化水素水溶液を製造した。
硫酸カリウムアルミニウムの添加量を2.0質量ppmに変更したことを除いては、実施例1と同様の方法で過酸化水素水溶液を製造した。
硫酸カリウムアルミニウムの添加量を0.6質量ppmに変更したことを除いては、実施例1と同様の方法で過酸化水素水溶液を製造した。
硫酸カリウムアルミニウムの添加量を2.1質量ppmに変更したことを除いては、実施例1と同様の方法で過酸化水素水溶液を製造した。
実施例1~4および比較例1~2で製造した過酸化水素水溶液の評価を行った。
模擬的に長期使用状態を再現したノズルを作製した。
材質:SUS316
サイズ:2S×220mmH
104、105、および106の枯草菌芽胞を各々付着させた500mLのPET製ボトルを用意した。120℃に加熱した前記安定剤堆積ノズルに、製造した過酸化水素水溶液を空気と混合させながら一定速度(過酸化水素水溶液の送液流量:60mL/min、空気流量:100L/min)で送液して気化させ、ボトルの内部に毎分0.1m3の風量で0.6秒間吹き込むことにより、ボトル内面を殺菌した。
B:対数減少値が6.4以上6.8未満
C:対数減少値が6.1以上6.4未満
D:対数減少値が6.1未満
上記殺菌試験後の安定剤堆積ノズルを、純水を用いて以下の条件で洗浄した。
洗浄圧力:0.17MPa
洗浄時間:6min
B:70%以上74%未満
C:66%以上70%未満
D:66%未満
Claims (5)
- 過酸化水素、カリウムイオン、および水を含む、殺菌用過酸化水素水溶液であって、
前記カリウムイオンの含有率が、前記殺菌用過酸化水素水溶液の全質量に対して、95~310ppbである、殺菌用過酸化水素水溶液。 - 前記カリウムイオンが、硫酸カリウムアルミニウム由来である、請求項1に記載の殺菌用過酸化水素水溶液。
- 硫酸イオンおよびアルミニウムをさらに含み、
硫酸イオンの含有率が、アルミニウムの含有率に対して、10倍未満である、請求項1または2に記載の殺菌用過酸化水素水溶液。 - 請求項1~3のいずれか1項に記載の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む殺菌剤を対象物に接触させることを含む、対象物の殺菌方法。
- 請求項1~3のいずれか1項に記載の殺菌用過酸化水素水溶液のミストおよび気体の少なくとも1つを含む殺菌剤を対象物に接触させることを含む、殺菌された対象物の製造方法。
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