JP4879387B2 - Spore killing agent composition - Google Patents
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- JP4879387B2 JP4879387B2 JP2000197985A JP2000197985A JP4879387B2 JP 4879387 B2 JP4879387 B2 JP 4879387B2 JP 2000197985 A JP2000197985 A JP 2000197985A JP 2000197985 A JP2000197985 A JP 2000197985A JP 4879387 B2 JP4879387 B2 JP 4879387B2
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Description
【0001】
【発明の属する技術分野】
本発明は殺芽胞剤組成物に関する。
【0002】
【従来の技術】
ある種の桿菌は、芽胞と称される強靱な胞子(内生胞子)を形成する。芽胞は高熱、乾燥、薬剤その他の有害作用に対して高度の抵抗性を有し、数年ないし数十年に亘って休眠したものも再生能力を有することが知られている。このため、医学、食品工業等の分野では、芽胞を完全に死滅させることが滅菌の基準の一つとなっている。特に、病院、養護施設等で用いられる医療器具や備品は、内部感染防止等の観点から十分な殺菌洗浄処理を行う必要がある。このような殺菌洗浄処理を行うための殺菌剤、消毒剤等が種々知られている。例えば、特開昭62−63504号には、陽イオン界面活性剤、無機過酸化物及び無機過酸化物の活性化剤を含有する殺菌剤組成物が開示されている。しかし通常の殺菌剤では、薬品耐性の強い芽胞の処理には不十分であり、抗菌スペクトルの広いグルタルアルデヒドや過酢酸が用いられている。
【0003】
グルタルアルデヒドや過酢酸を用いた殺菌洗浄処理の例として、例えば内視鏡の殺菌洗浄では、第4級アンモニウム塩系殺菌剤、アルコール、酸性水、両性界面活性剤等を用いた一次消毒、酵素製剤や中性洗剤等を用いた洗浄工程を経た後、グルタルアルデヒドや過酢酸による滅菌処理が行われ、必要に応じてオートクレーブ消毒、乾熱滅菌が行われる。
【0004】
【発明が解決しようとする課題】
しかしながら、上記のような処理は非常に時間がかかるため、更なる工程の短縮化・簡略化が望まれている。その際、確実な殺芽胞効果が得られることが必要である。また、グルタルアルデヒドは、アルデヒドの有毒ガスが発生し作業環境を低下させ、また医療器具等に付着したタンパク質と反応して固着物を形成し、洗浄を困難にするという問題がある。一方、過酢酸は刺激臭が強く、また酸化力が強いため素材によっては包装容器や被処理物等を腐食してしまうおそれがある。
【0005】
本発明は、簡易な処理により確実な殺芽胞効果が得られ、且つ安全性、作業性に優れた殺芽胞剤組成物を得ることを目的とする。
【0006】
【課題を解決するための手段】
本発明は、無機過酸化物(a)と、テトラアセチルエチレンジアミン(b)と、無機酸のアルカリ金属塩及び/又は無機酸のアルカリ土類金属塩(c)とを含有し、且つ(a)/(b)重量比が10/1〜1/2である殺芽胞剤組成物に関する。
【0007】
また、本発明は、上記本発明の殺芽胞剤組成物を含有するpH2〜9の水溶液を芽胞と接触させることからなる殺芽胞方法に関する。
【0008】
【発明の実施の形態】
本発明に用いられる無機過酸化物(a)としては、過炭酸ナトリウム、過ホウ酸ナトリウム等が挙げられ、過炭酸ナトリウムが好ましい。また、無機過酸化物(a)とテトラアセチルエチレンジアミン(b)の重量比は、殺芽胞効果の観点から、(a)/(b)=10/1〜1/2、好ましくは3/1〜1/1、特に好ましくは2/1〜1/1である。
【0009】
また、本発明に用いられる無機酸のアルカリ金属塩及び/又は無機酸のアルカリ土類金属塩(c)としては、硫酸ナトリウム、硝酸ナトリウム、塩化ナトリウム、炭酸ナトリウム、炭酸水素ナトリウム、硫酸マグネシウム、硝酸マグネシウム、塩化マグネシウム、炭酸マグネシウム等が挙げられ、硫酸ナトリウム、硫酸マグネシウムが好ましい。無機酸のアルカリ金属塩及び/又は無機酸のアルカリ土類金属塩(c)は、無機過酸化物(a)に対して(a)/(c)=1/1〜4/1の重量比で用いられるのが好ましい。無機酸のアルカリ金属塩や無機酸のアルカリ土類金属塩は、それぞれ単独で用いられるが、無機過酸化物の乾燥及び殺芽胞活性向上の観点から併用して用いるのが好ましい。
【0010】
また、本発明の殺芽胞剤組成物には、更に界面活性剤(d)を配合することが好ましく、特に非イオン界面活性剤、陰イオン界面活性剤、両性界面活性剤及び陽イオン界面活性剤から選ばれる一種以上の界面活性剤を配合することが好ましい。
【0011】
非イオン界面活性剤としては、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキレンエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、アルキルポリグリコシド、ショ糖脂肪酸エステル、アルキルポリグリセリンエーテルが挙げられ、なかでもポリオキシエチレン(エチレンオキサイド平均付加モル数3〜200)アルキル(炭素数12〜18)エーテルが好ましい。
【0012】
陰イオン界面活性剤としては、高級脂肪酸塩、高級アルコール硫酸エステル塩、高級アルコールスルホン酸塩、硫酸化脂肪酸塩、スルホン化脂肪酸塩、リン酸エステル塩、脂肪酸エステルの硫酸エステル塩、脂肪酸エステルのスルホン酸エステル塩、高級アルコールエーテルの硫酸エステル塩、高級アルコールエーテルのスルホン酸エステル塩、高級アルコールエーテル置換の酢酸塩、脂肪酸とアミノ酸の縮合物、脂肪酸アミドのアルキロール化硫酸エステル塩、脂肪酸アミドのアルキル化スルホン酸塩、スルホコハク酸エステル塩、アルキルベンゼンスルホン酸塩、アルキルフェノールスルホン酸塩、アルキルナフタレンスルホン酸塩、アルキルベンゾイミダゾールスルホン酸塩、アミドエーテルカルボン酸又はその塩、エーテルカルボン酸又はその塩、N−アシル−N−メチルタウリン又はその塩、アミドエーテル硫酸又はその塩、N−アシルグルタミン酸又はその塩、N−アミドエチル−N−ヒドロキシエチル酢酸又はその塩、アシルオキシエタンスルホン酸又はその塩、N−アシル−β−アラニン又はその塩、N−アシル−N−カルボキシエチルタウリン又はその塩、N−アシル−N−カルボキシエチルグリシン又はその塩、及びアルキル又はアルケニルアミノカルボニルメチル硫酸又はその塩等が挙げられる。なかでも高級アルコール硫酸エステル塩が好ましい。
【0013】
両性界面活性剤としては、アルキルジメチルアミンオキサイド等のアミンオキサイド、アルキルジメチルアミノ脂肪酸ベタイン、アルキルカルボキシメチルヒドロキシエチルイミダゾリウムベタイン等のベタインなどが挙げられ、ベタインが好ましい。
【0014】
陽イオン界面活性剤としては、ラウリルトリメチルアンモニウムクロライド、ステアリルトリメチルアンモニウムクロライド、セチルトリメチルアンモニウムクロライド等のアルキルトリメチルアンモニウム塩;ジステアリルジメチルアンモニウムクロライド、ジアルキル(炭素数12〜18)ジメチルアンモニウムクロライド等のジアルキルジメチルアンモニウム塩;アルキル(炭素数12〜14)ジメチルベンジルアンモニウムクロライド等のアルキルジメチルベンジルアンモニウム塩;置換ベンザルコニウム塩;ベンゼトニウム塩等のモノカチオン化合物の他、N−アルキル−N,N,N’,N’,N’−ペンタメチル−プロピレンアンモニウム塩等のポリカチオン化合物が挙げられ、アルキルトリメチルアンモニウム塩、ジアルキルジメチルアンモニウム塩、アルキルジメチルベンジルアンモニウム塩、置換ベンザルコニウム塩が好ましく、特に、ラウリルトリメチルアンモニウムクロライド、ステアリルトリメチルアンモニウムクロライド、セチルトリメチルアンモニウムクロライド、ジステアリルジメチルアンモニウムクロライド、ジアルキル(炭素数12〜18)ジメチルアンモニウムクロライド、アルキル(炭素数12〜18)ジメチルベンジルアンモニウムクロライドが好ましい。
【0015】
界面活性剤(d)は、テトラアセチルエチレンジアミン(b)に対して(b)/(d)=20/1〜2/1の重量比で用いられるのが好ましい。
【0016】
本発明の殺芽胞剤組成物は、粉体、顆粒、錠剤等の固形物の形態であるときは使用時に水溶液として用いられる。本発明の殺芽胞剤組成物は、有機過酸濃度が250〜2000ppmとなるような濃度とすることが好ましい。また、水溶液のpHは好ましくは2〜9、より好ましくは4〜9、更に好ましくは6〜8、特に好ましくは6.5〜7.5である。水溶液のpHの調整は無機酸もしくは有機酸により達成でき、予め固形組成物に無機酸もしくは有機酸を添加しておいても、水溶液に無機酸もしくは有機酸を添加してもよい。前者のように予め固形組成物に酸を添加しておく場合、酸を水溶性無機塩等の水溶性物質でコーティングしておくことで、酸の溶解速度を調節することができる。コーティングを無機酸のアルカリ金属塩及び/又は無機酸のアルカリ土類金属塩(c)により行うこともできる。
【0017】
本発明の殺芽胞剤組成物は、医療施設等で用いられる器具や備品の殺芽胞に好適であり、特にメス、ハサミ、鉗子等の手術用機械器具、内視鏡等の診断用機械器具、輸血器具、透析機等の治療用機械器具等の医療用機械器具用の殺芽胞剤組成物として有用である。
【0018】
なお、本発明において「殺芽胞」とは、芽胞を形成し休止あるいは耐久形体状態にある細菌を完全に死滅させることをいう。
【0019】
【発明の効果】
本発明によれば、殺芽胞効果が高く、且つ安全性、作業性に優れた殺芽胞剤組成物が得られる。
【0020】
【実施例】
≪組成物の調製≫
表1に示す組成物を調製した。
【0021】
【表1】
【0022】
(注)
*1:商品名エマール0〔花王(株)製〕
*2:商品名エマルゲン109P〔花王(株)製〕
*3:商品名アンヒトール20BS〔花王(株)製〕
*4:商品名コータミンD2345P〔花王(株)製〕
*5:過酢酸7重量%、過酸化水素8重量%、酢酸34重量%及び残部の水からなる。
【0023】
≪殺芽胞性試験≫
表1に示す組成物を用いて以下の殺芽胞性試験を行った。結果を表2に示す。
【0024】
<試験芽胞>
Bacillus cereus(IFO13494、list of culture, microorganisms 第10版 1996年、財団法人 発酵研究所 発行、〒532 大阪市淀川区十三本町2丁目17番85号)を定法により熱処理し、得た芽胞を試験に供した。
【0025】
<試験方法>
表1の殺芽胞剤組成物を滅菌水で5〜0.1重量%まで段階的に希釈した製剤を調製し、各製剤中に上記芽胞を1.0×107個/mLの濃度で添加する。なお、実施例1〜5及び比較例3は、何れもクエン酸により、pHを7.0に調整した。30分間25℃で放置した後、この溶液を100μL取り1%チオ硫酸ナトリウム水溶液0.9mLを加え、製剤を不活化し、培養培地(SCDLP培地200μL)に5μL接種し、35℃で培養し、最小殺菌濃度(MLC)を求めた。なお、各製剤の有機過酸の生成濃度は150〜8000ppmであったが、表2にはMLCを示す製剤の有機過酸生成濃度を示した。ここで、有機過酸濃度の定量方法は次の通りである。
【0026】
<有機過酸濃度の定量方法>
(a)過酸化水素の定量法
200mLのコニカルビーカーに、希釈した製剤約2gを精秤し、20%硫酸10mLと氷片2〜3個を加えて溶液を冷却し、触媒として飽和硫酸マンガン水溶液を1〜2滴加えた後、N/2−過マンガン酸カリウムで滴定する。溶液が淡いピンク色を1〜10秒間呈するところを終点とする。過酸化水素濃度は下記式(1−1)により算出される。
【0027】
【数1】
【0028】
(b)有機過酸の定量法
300mL共栓付三角フラスコに、希釈した製剤約1gを精秤し、20%硫酸10mL、純水20mL及び飽和ヨウ化カリウム水溶液2mLを加えて密栓した後、フラスコを軽く振盪する。これを冷暗所に5分間静置した後、N/5−チオ硫酸ソーダで滴定する。液が淡黄色を示したところで2%澱粉溶液を数滴加えて滴定を続ける。溶液の青紫色が消失したところを終点とする。有機過酸濃度は過酢酸濃度として下記式(1−2)により算出される。
【0029】
【数2】
【0030】
【表2】
【0031】
表2の結果から、実施例1〜5の製剤は比較例1〜3の製剤より殺芽胞効果に優れていることがわかる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sporicidal composition.
[0002]
[Prior art]
Certain gonococci form strong spores (endospores) called spores. It is known that spores are highly resistant to high heat, dryness, drugs and other harmful effects, and those that have been dormant for several years to several decades are also capable of regenerating. For this reason, in the fields of medicine, food industry, etc., it is one of the standards for sterilization to completely kill spores. In particular, medical instruments and equipment used in hospitals, nursing homes and the like need to be sufficiently sterilized and washed from the viewpoint of preventing internal infection. Various disinfectants, disinfectants, and the like for performing such disinfection and cleaning treatment are known. For example, Japanese Patent Application Laid-Open No. 62-63504 discloses a bactericide composition containing a cationic surfactant, an inorganic peroxide and an inorganic peroxide activator. However, ordinary disinfectants are insufficient for the treatment of highly chemical-resistant spores, and glutaraldehyde and peracetic acid having a broad antibacterial spectrum are used.
[0003]
As an example of sterilization cleaning treatment using glutaraldehyde or peracetic acid, for example, in sterilization cleaning of an endoscope, primary disinfection using quaternary ammonium salt-based disinfectant, alcohol, acidic water, amphoteric surfactant, etc., enzyme After a washing process using a preparation, neutral detergent, etc., sterilization with glutaraldehyde or peracetic acid is performed, and autoclave disinfection and dry heat sterilization are performed as necessary.
[0004]
[Problems to be solved by the invention]
However, since the processing as described above is very time-consuming, further shortening and simplification of the process is desired. At that time, it is necessary to obtain a certain sporicidal effect. In addition, glutaraldehyde has a problem that a toxic aldehyde gas is generated, lowers the working environment, and reacts with proteins adhering to a medical instrument to form a fixed substance, which makes cleaning difficult. On the other hand, peracetic acid has a strong irritating odor and strong oxidizing power, so that depending on the material, there is a risk of corroding the packaging container or the object to be treated.
[0005]
An object of the present invention is to obtain a spore killing agent composition that can provide a certain spore killing effect by simple treatment and is excellent in safety and workability.
[0006]
[Means for Solving the Problems]
The present invention comprises an inorganic peroxide (a), tetraacetylethylenediamine (b), an alkali metal salt of an inorganic acid and / or an alkaline earth metal salt (c) of an inorganic acid, and (a) / (B) relates to a sporicidal composition having a weight ratio of 10/1 to 1/2.
[0007]
Moreover, this invention relates to the spore killing method which contacts the spore with the aqueous solution of pH 2-9 containing the said spore killing agent composition of this invention.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the inorganic peroxide (a) used in the present invention include sodium percarbonate and sodium perborate, and sodium percarbonate is preferred. The weight ratio of the inorganic peroxide (a) to the tetraacetylethylenediamine (b) is (a) / (b) = 10/1 to 1/2, preferably 3/1 to 1, from the viewpoint of sporicidal effect. 1/1, particularly preferably 2/1 to 1/1.
[0009]
The alkali metal salt of inorganic acid and / or alkaline earth metal salt (c) of inorganic acid used in the present invention includes sodium sulfate, sodium nitrate, sodium chloride, sodium carbonate, sodium bicarbonate, magnesium sulfate, nitric acid. Examples thereof include magnesium, magnesium chloride, magnesium carbonate, and sodium sulfate and magnesium sulfate are preferable. Alkali metal salt of inorganic acid and / or alkaline earth metal salt of inorganic acid (c) is a weight ratio of (a) / (c) = 1/1 to 4/1 with respect to inorganic peroxide (a). Is preferably used. An alkali metal salt of an inorganic acid and an alkaline earth metal salt of an inorganic acid are each used alone, but are preferably used in combination from the viewpoint of drying the inorganic peroxide and improving the sporicidal activity.
[0010]
Further, the sporicidal composition of the present invention preferably further contains a surfactant (d), and in particular, a nonionic surfactant, an anionic surfactant, an amphoteric surfactant and a cationic surfactant. It is preferable to blend one or more surfactants selected from:
[0011]
Nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkylene ethers, polyoxyethylene sorbitan fatty acid esters, alkyl polyglycosides, sucrose fatty acid esters, alkyl polyglycerin ethers, among which polyoxyethylene ( Ethylene oxide average addition mole number 3 to 200) alkyl (carbon number 12 to 18) ether is preferable.
[0012]
Anionic surfactants include higher fatty acid salts, higher alcohol sulfates, higher alcohol sulfonates, sulfated fatty acid salts, sulfonated fatty acid salts, phosphate ester salts, sulfate esters of fatty acid esters, and sulfones of fatty acid esters. Acid ester salt, sulfate ester salt of higher alcohol ether, sulfonate ester salt of higher alcohol ether, acetate salt of higher alcohol ether substitution, condensate of fatty acid and amino acid, alkylolated sulfate ester of fatty acid amide, alkyl of fatty acid amide Sulfonates, sulfosuccinic acid ester salts, alkylbenzene sulfonates, alkylphenol sulfonates, alkylnaphthalene sulfonates, alkylbenzimidazole sulfonates, amide ether carboxylic acids or their salts, ether carboxylic acids Or a salt thereof, N-acyl-N-methyltaurine or a salt thereof, amide ether sulfuric acid or a salt thereof, N-acyl glutamic acid or a salt thereof, N-amidoethyl-N-hydroxyethyl acetic acid or a salt thereof, acyloxyethanesulfonic acid or a salt thereof Salt, N-acyl-β-alanine or salt thereof, N-acyl-N-carboxyethyltaurine or salt thereof, N-acyl-N-carboxyethylglycine or salt thereof, and alkyl or alkenylaminocarbonylmethylsulfuric acid or salt thereof Etc. Of these, higher alcohol sulfates are preferred.
[0013]
Examples of amphoteric surfactants include amine oxides such as alkyldimethylamine oxide, betaines such as alkyldimethylamino fatty acid betaines, alkylcarboxymethylhydroxyethylimidazolium betaines, and the like is preferred.
[0014]
Examples of cationic surfactants include alkyltrimethylammonium salts such as lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, and cetyltrimethylammonium chloride; Ammonium salt; alkyl (C12-14) alkyldimethylbenzylammonium salt such as dimethylbenzylammonium chloride; substituted benzalkonium salt; monocationic compound such as benzethonium salt, N-alkyl-N, N, N ′, And polycation compounds such as N ′, N′-pentamethyl-propyleneammonium salt, alkyltrimethylammonium salt, dialkyldimethyl Luammonium salt, alkyldimethylbenzylammonium salt, and substituted benzalkonium salt are preferable, and in particular, lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, distearyldimethylammonium chloride, dialkyl (carbon number 12-18) dimethyl. Ammonium chloride and alkyl (C12-18) dimethylbenzylammonium chloride are preferred.
[0015]
The surfactant (d) is preferably used in a weight ratio of (b) / (d) = 20/1 to 2/1 with respect to the tetraacetylethylenediamine (b).
[0016]
The sporicidal composition of the present invention is used as an aqueous solution at the time of use when it is in the form of a solid such as a powder, granule or tablet. The sporicidal composition of the present invention preferably has a concentration such that the organic peracid concentration is 250 to 2000 ppm. Further, the pH of the aqueous solution is preferably 2 to 9, more preferably 4 to 9, further preferably 6 to 8, and particularly preferably 6.5 to 7.5. Adjustment of the pH of the aqueous solution can be achieved with an inorganic acid or an organic acid, and either an inorganic acid or an organic acid may be added to the solid composition in advance, or an inorganic acid or an organic acid may be added to the aqueous solution. When the acid is previously added to the solid composition as in the former, the acid dissolution rate can be adjusted by coating the acid with a water-soluble substance such as a water-soluble inorganic salt. The coating can also be carried out with an alkali metal salt of an inorganic acid and / or an alkaline earth metal salt (c) of an inorganic acid.
[0017]
The sporicidal composition of the present invention is suitable for spores of instruments and equipment used in medical facilities and the like, and in particular, surgical instrument such as scalpel, scissors, forceps, diagnostic instrument such as endoscope, It is useful as a sporicidal agent composition for medical equipment such as blood transfusion equipment and therapeutic equipment such as dialysis machines.
[0018]
In the present invention, the term “spore killing” refers to the complete killing of bacteria that form spores and are in a dormant or durable form.
[0019]
【Effect of the invention】
According to the present invention, a sporicidal composition having a high sporicidal effect and excellent safety and workability can be obtained.
[0020]
【Example】
<Preparation of composition>
The compositions shown in Table 1 were prepared.
[0021]
[Table 1]
[0022]
(note)
* 1: Brand name Emar 0 [manufactured by Kao Corporation]
* 2: Product name Emulgen 109P (manufactured by Kao Corporation)
* 3: Product name Anhitoal 20BS [manufactured by Kao Corporation]
* 4: Product name Cotamine D2345P [manufactured by Kao Corporation]
* 5: Consists of 7% by weight of peracetic acid, 8% by weight of hydrogen peroxide, 34% by weight of acetic acid and the balance water.
[0023]
≪Spore killing test≫
The following sporicidal test was conducted using the composition shown in Table 1. The results are shown in Table 2.
[0024]
<Test spores>
Bacillus cereus (IFO 13494, list of culture, microorganisms, 10th edition, 1996, published by Fermentation Research Institute, Inc., 2-17-85, Juzan-cho, Sasankawa-cho, Osaka, 532) It was used for.
[0025]
<Test method>
Preparations were prepared by gradually diluting the sporicidal composition of Table 1 to 5 to 0.1% by weight with sterilized water, and the above spores were added to each preparation at a concentration of 1.0 × 10 7 cells / mL. To do. In Examples 1 to 5 and Comparative Example 3, the pH was adjusted to 7.0 with citric acid. After leaving at 25 ° C. for 30 minutes, 100 μL of this solution was taken and 0.9 mL of 1% sodium thiosulfate aqueous solution was added to inactivate the preparation, 5 μL was inoculated into the culture medium (SCDLP medium 200 μL), and cultured at 35 ° C. The minimum bactericidal concentration (MLC) was determined. In addition, although the production | generation density | concentration of the organic peracid of each formulation was 150-8000 ppm, Table 2 showed the organic peracid production | generation density | concentration of the formulation which shows MLC. Here, the method for quantifying the organic peracid concentration is as follows.
[0026]
<Method for quantifying organic peracid concentration>
(A) Quantitative determination method of hydrogen peroxide About 2 g of diluted preparation is accurately weighed in a 200 mL conical beaker, 10 mL of 20% sulfuric acid and 2 to 3 pieces of ice are added, the solution is cooled, and a saturated manganese sulfate aqueous solution as a catalyst After adding 1 to 2 drops, titrate with potassium N / 2-permanganate. The end point is where the solution exhibits a light pink color for 1 to 10 seconds. The hydrogen peroxide concentration is calculated by the following formula (1-1).
[0027]
[Expression 1]
[0028]
(B) Quantitative method of organic peracid Weigh accurately about 1 g of diluted preparation into a 300 mL conical flask with a stopper, add 20 mL of 20% sulfuric acid, 20 mL of pure water and 2 mL of saturated potassium iodide aqueous solution, and seal tightly. Shake gently. This is left to stand in a cool dark place for 5 minutes, and then titrated with N / 5-sodium thiosulfate. When the liquid shows a pale yellow color, add several drops of 2% starch solution and continue titration. The point where the blue-violet color of the solution disappears is taken as the end point. The organic peracid concentration is calculated by the following formula (1-2) as the peracetic acid concentration.
[0029]
[Expression 2]
[0030]
[Table 2]
[0031]
From the results in Table 2, it can be seen that the preparations of Examples 1 to 5 are more excellent in sporicidal effect than the preparations of Comparative Examples 1 to 3.
Claims (2)
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