JP2017008318A - Sterilization detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sterilization detergent composition excellent in sterilization of spore forming bacterium, high in detergency and low in risk of firing of the sterilization detergent composition itself and a method for sterilization of spore forming bacterium using the same.SOLUTION: There is provided a sterilization detergent composition containing (A) a surfactant of 5 mass% or less, (B) sodium percarbonate and/or sodium perborate of 3 to 10 mass%, (C) tetraacetylethylenediamine and/or decanoyloxybenzoic acid of 3.3 to 17 mass% with (C)/(B) of 1.1 to 1.7 and having pH of a dilution of the sterilization detergent composition of 9.6 or less and alkalinity with pH 8.0 as an endpoint of 6% or less in terms of KOH.SELECTED DRAWING: None

Description

  The present invention relates to a sterilizing detergent composition.

  One of the difficulties in hygiene management measures at food manufacturing and cooking facilities, medical facilities, and nursing homes is the response to spore-forming bacteria. This is because spore-forming bacteria produce spores when placed in an environment that is unfavorable for growth due to nutrition, temperature, etc., and the spores have high heat resistance and chemical resistance, and are cationic interfaces that are the main components of commonly used bactericides. This is because it is difficult to inactivate with an active agent. In the medical field, glutaral and liquid peracetic acid preparations, which are the strongest disinfectants, are used to ensure the sterilization of medical devices, but glutaral is highly toxic, and liquid peracetic acid preparations contain acetic acid. Because of its strong irritating odor of acetic acid, there is a problem that its use is avoided in fields other than medical workers such as food manufacturing, cooking facilities, and linen washing factories.

  In recent years, powdered peracetic acid preparations with little irritating odor and easy handling have been developed. For example, in Japanese Patent No. 4879387, percarbonate and tetraacetylethylenediamine are blended and diluted at the time of use. A powdered peracetic acid formulation that generates peracetic acid is disclosed.

  However, the above patent does not consider the heat storage property (self-heating property) which is a concern with the combination of percarbonate and tetraacetylethylenediamine. In percarbonate, hydrogen peroxide is added to the carbonate in a molar ratio of 2: 3. When hydrogen peroxide is decomposed by heat, water and oxygen are generated, and the water and percarbonate come into contact with each other. This accelerates the decomposition of hydrogen peroxide in the percarbonate. The generation of heat of decomposition in the process further promotes decomposition. As a result, the temperature of the composition containing the percarbonate increases rapidly, and if there is combustible material in the composition, there is a risk of fire. There is concern about sex. For these reasons, it is essential to conduct a heat storage test even when tetraacetylethylenediamine is not blended. However, when tetraacetylethylenediamine is blended, hydrolysis due to contact between tetraacetylethylenediamine and percarbonate is added. In particular, it is necessary to pay attention to the self-heating property.

  Japanese Patent Publication No. 8-919 is a composition containing a percarbonate and a bleach activator and taking into account the suppression of self-heating, and includes sodium percarbonate not subjected to heat treatment, a bleach activator, and an alkali metal. A bleaching composition comprising bicarbonate, alkali metal sesquicarbonate or alkali metal dihydrogen orthophosphate is disclosed.

  However, the composition of this publication does not contain a surfactant and requires a separate cleaning composition. The absence of a surfactant reduces the risk of self-heating, but the cleaning property is poor, and the separate use of the bleaching composition and the cleaning agent is bothersome for the user, and cleaning. Therefore, there has been a demand for a sterilizing detergent that can be sterilized simultaneously.

Japanese Patent No. 4879387 Japanese Patent Publication No. 8-919

Problems to be solved by the invention

  The present invention has been made in view of such circumstances, is excellent in bactericidal properties of bacteria adhering to an object, can be sterilized in a short time against spore-forming bacteria, sebum, oil stains, protein stains The purpose of the present invention is to provide a sterilizing detergent composition that has a high cleaning effect on water, has a low risk of ignition of the sterilizing detergent composition itself, and has a good stability of the ability to generate organic peracid even when stored at high temperatures.

Means for solving the problem

  As a result of intensive studies to achieve the above object, (A) 5% by mass or less of surfactant, (B) 3-10% by mass of sodium percarbonate and / or sodium perborate, (C) It is a composition containing 3.3 to 17% by mass of tetraacetylethylenediamine (TAED) and / or decanoyloxybenzoic acid (DOBA), and (C) / (B) is 1.1 to 1.7. The pH of the diluted solution of the composition is 9.6 or less, and the alkalinity of the composition when the end point is pH 8.0 is 6% or less in terms of KOH. A cleaning composition was completed.

Effect of the invention

  According to the present invention, the surfactant (A) is contained in a specific amount, sodium percarbonate and / or sodium perborate (B) is blended, and tetraacetylethylenediamine (TAED) and / or as an organic peracid source. Decanoyloxybenzoic acid (DOBA) (C) is an essential component, and the ratio of component (B) and component (C) is specified, and the pH of the sterilizing detergent composition dilution and the alkalinity of the composition are specified. By doing so, it has excellent bactericidal properties and low self-heating, so it can be handled safely and has the effect of exerting excellent cleaning power against oily stains and protein stains on tableware and clothing. It is done.

  In addition, the present invention is particularly excellent in detergency when the (A) surfactant is one or more surfactants selected from anionic surfactants and nonionic surfactants.

  Furthermore, the sterilizing detergent composition is diluted with water so as to be 0.05 to 1.0% by mass at a temperature of 60 to less than 80 ° C., and the diluted solution and the object are contacted for 5 to 20 minutes. When it is made, the bactericidal effect with respect to a spore formation microbe is acquired notably.

  Moreover, when the temperature at the time of diluting a sterilization cleaning composition is 35 degreeC or more and less than 60 degreeC, by adding hydrogen peroxide water to the dilution liquid of a sterilization cleaning composition, with respect to a spore formation microbe A high bactericidal effect is obtained.

  Next, embodiments of the present invention will be described in detail.

  The surfactant (A) used in the sterilizing and cleaning composition of the present invention is necessary to increase the cleaning effect on sebum and oil stains. Examples of the surfactant include an anionic surfactant and a nonionic interface. An activator, a cationic surfactant, and an amphoteric surfactant are mentioned. Only one kind of these surfactants may be blended, or one or more kinds may be blended in combination. An anionic surfactant and a nonionic surfactant are preferred.

  Examples of anionic surfactants include alkylbenzene sulfonates, fatty acid salts, higher alcohol sulfates, polyoxyethylene alkyl ether sulfates, α-sulfo fatty acid esters, α-olefin sulfonates, monoalkyl phosphate esters, alkanes. Examples thereof include sulfonates. Of these, alkylbenzene sulfonates, fatty acid salts, and higher alcohol sulfates are preferred.

  Nonionic surfactants include polyoxyethylene alkyl ether, polyoxyethylene / polyoxypropylene alkyl ether, polyoxyethylene / polyoxybutylene alkyl ether, alkylamine ethoxylate, alkylamine alkoxylate, pluronic block polymer, reverse Examples include pluronic block polymers, polyhydric alcohol ethylene oxide / propylene oxide adducts, alkyl glucosides, and fatty acid alkanolamides. Of these, polyoxyethylene alkyl ether, polyoxyethylene / polyoxypropylene alkyl ether, alkylamine ethoxylate, and alkylamine alkoxylate are preferable.

  Examples of the cationic surfactant include alkyl trimethyl ammonium salt, dialkyl dimethyl ammonium salt, alkyl dimethyl benzyl ammonium salt, polyhexamethylene biguanide, benzethonium chloride and the like. Of these, dialkyldimethylammonium salt, alkyldimethylbenzylammonium salt, and polyhexamethylene biguanide are preferable.

  Examples of amphoteric surfactants include alkylamino fatty acid salts, alkylbetaines, and alkylamine oxides. Of these, alkylamine oxide is preferable.

  The content of the surfactant is preferably 5% by mass or less, and more preferably 0.1 to 4% by mass. Although the stability of effective oxygen is better when the surfactant is not included, it is preferable to contain 0.1% by mass or more in consideration of the cleaning performance. In addition, the cleaning performance is improved by adding as much surfactant as possible, but less than 5% by mass maintains the stability of effective oxygen in the oxidizing agent of sodium percarbonate or sodium perborate. Is preferable.

  (B) component sodium percarbonate and / or sodium perborate and (C) component tetraacetylethylenediamine and / or decanoyloxybenzoic acid used in the germicidal cleaning composition of the present invention are peracetic acid and It is essential for generating organic peracids. And it is preferable to make the compounding ratio of (B) component and (C) component into (C) / (B) = 1.1-1.7. A value exceeding 1.1 is preferable because a bactericidal effect can be obtained in a short time, and a value of 1.7 or less is preferable in terms of cost effectiveness.

  (B) About the sodium percarbonate and / or sodium perborate of a component, the direction which is 3 mass% or more is preferable at the point of the washing | cleaning effect with the bactericidal effect. Further, since tetraacetylethylenediamine and / or decanoyloxybenzoic acid is contained, the heat storage stability of the composition containing sodium percarbonate and / or sodium perborate is taken into consideration, and the content is preferably 10% by mass or less.

  (C) About tetraacetylethylenediamine and / or decanoyloxybenzoic acid as the component, the amount of 3.3% by mass or more can generate sufficient peracetic acid and / or organic peracid, and has a bactericidal effect. This is preferable. Further, from the viewpoint of cost effectiveness, it is preferably 17% by mass or less.

  Further, the pH of the diluted solution of the sterilizing detergent composition of the present invention is 9.6 or less, and the alkalinity of the composition when the end point is pH 8.0 is 6% or less in terms of KOH. It is preferable. As disclosed in Patent Document 1, an invention is characterized in that the pH of a diluted solution of a composition containing sodium percarbonate and tetraacetylethylenediamine is suppressed to 9 or less. It has been found that even if the pH of the composition is suppressed to 9 or less, if the alkalinity of the composition is high, the bactericidal effect against spore-forming bacteria decreases. That is, in neutralization titration using 0.5 mol / L hydrochloric acid, the alkalinity of the composition when pH 8.0 is the end point needs to be 6% or less in terms of KOH. Although the elucidation of the mechanism is not clear, when the alkalinity of the composition exceeds 6%, among the generated peracetic acid, the rate of change to peracetate is increased by the alkaline agent in the diluted solution, This is presumably due to a decrease in the ratio of peracetic acid. It is also assumed that the same applies to organic peracids generated from decanoyloxybenzoic acid. Considering such a mechanism, from the viewpoint of bactericidal properties, the alkalinity of the composition is more preferably 5.0% or less in terms of KOH. Moreover, it is preferable that pH of the dilution liquid of a composition is 9 or less. A lower pH is advantageous in terms of bactericidal efficacy, but considering the detergency, the pH of the diluted solution is more preferably 6-9.

  If the blending conditions of the above components (B) and (C) are satisfied and the other components are neutral, no special pH adjuster is required, but the alkalinity of the composition is within the range satisfying the above conditions. Thus, a component exhibiting pH buffering properties in a low alkaline region such as sodium hydrogen carbonate, or a combination of citrate and citric acid may be blended so that a buffer solution is obtained upon dilution. In view of effective oxygen stability of the component (B), it is preferable to blend sodium hydrogen carbonate.

  The bactericidal properties of the composition against bacteria that do not form spores such as E. coli and Staphylococcus aureus are effective even at room temperature of 20 ° C., but for spore-forming bacteria, the bactericidal detergent composition is dissolved at a high temperature, It is more effective to use after sufficiently generating acetic acid. That is, when using the above-mentioned sterilizing detergent composition for the purpose of sterilizing spore-forming bacteria, the composition is made from 0.05 to 1.0 mass% at a temperature of 60 to 80 ° C. with water. A method of diluting and bringing the diluted solution into contact with the object for 5 to 20 minutes is preferable. When the temperature is 60 ° C. or higher, a sufficient amount of organic peracid generated by dissolution of an organic peracid source of tetraacetylethylenediamine or decanoyloxybenzoic acid and an oxidizing agent of sodium percarbonate or sodium perborate can be obtained. , Because an excellent bactericidal effect is exhibited even in a short time of 5 to 20 minutes. In addition, the higher the temperature, the higher the sterilizing effect, but a temperature lower than 80 ° C. is preferable in terms of energy cost.

  If it is the said temperature range, it can sterilize in the short time of 5 to 20 minutes, and the dilution density | concentration of a composition is as low as 0.05-1.0 mass%. More preferably, the dilution concentration of the composition is 0.1 to 0.5% by mass. Surprisingly, if the composition is diluted at a temperature range of 60 to less than 80 ° C., the temperature of the diluted solution is lowered thereafter, and the spore can be obtained even at a normal temperature of 20 ° C. during the sterilization process in which the object is brought into contact with the diluted solution. A bactericidal effect against the forming bacteria is obtained.

  Furthermore, when the temperature at the time of dilution of a composition is 35 degreeC or more and less than 60 degreeC, the bactericidal property with respect to a spore-forming microbe can be improved by adding hydrogen peroxide water to the dilution liquid of a composition. The amount of hydrogen peroxide solution added is arbitrary, but if it is added in the range of 0.05 to 0.3% by mass, the spore-forming bacteria equivalent to the case where the composition is diluted at 60 ° C. or higher even at a low temperature Since the bactericidal property is obtained, the energy consumed for heating can be reduced.

  The sterilizing and cleaning composition of the present invention is for the purpose of cleaning and sterilization, and there is no limitation on the object, but there are tableware in the kitchen, cooking utensils, the interior of the dishwasher, clothes, towels, sheets, etc. It can be used preferably on clothing, washing tubs, cooking equipment such as food factories and food processing factories, facility floors, containers such as glass bottles for beverages, and metal surfaces, and cleans and sterilizes medical instruments such as forceps and scissors It is also suitable to do.

  The above sterilizing and cleaning composition can be used to wash and sterilize objects in the dipping process, and is used in automatic dishwashers, washing machines, and washing machines for medical equipment that automatically perform everything from washing to rinsing. It is also preferable to do.

  In the case of immersion, once the composition is diluted at 60 ° C. or more and less than 80 ° C., the bactericidal effect against spore bacteria is sufficiently exerted even if the temperature of the diluted solution is lowered thereafter. When used in a washing machine or washing machine, the washing or sterilization process is performed with the diluted solution heated to 60 ° C or more and less than 80 ° C by the heater in the washing machine or washing machine. In order to reduce the energy used to suppress the heating to 35 ° C. or more and less than 60 ° C., bactericidal properties against spore-forming bacteria equivalent to 60 ° C. or more can be obtained by adding hydrogen peroxide water separately. .

  Examples of water used for diluting the sterilizing detergent composition of the present invention include tap water, soft water, ion exchange water, pure water, and purified water, preferably soft water, ion exchange water, and pure water. It is. These may be used alone or in combination of two or more.

  Furthermore, the sterilizing detergent composition of the present invention includes, as other optional components, enzymes, polyelectrolyte polymers, solvents, dyes, fragrances, metal corrosion inhibitors, bactericides, deodorants, antistatic agents, anti-oxidants, A foaming agent etc. can be used.

  Next, examples of the present invention will be described in detail together with comparative examples. However, the present invention is not limited to the following examples.

[Examples 1 to 10, Comparative Examples 1 to 8]
A sterilizing detergent composition having the composition shown in Tables 1 and 2 below is prepared, pH, alkalinity, bactericidal power against spore-forming bacteria, bactericidal power against general bacteria, detergency 1: detergency against food stains, detergency 2: Detergency to model sebum soil, storage stability 1: organic peracid generation amount stability, storage stability 2: Thermal storage properties were evaluated by the following methods. The results are shown in Tables 1 and 2. In addition, the detail of each component in a table | surface is as follows, and the numerical value which shows the composition in a table | surface is shown by the effective content (mass%, pure part conversion) of each component.

[PH]
Measurement method 0.10% by weight diluted with ion-exchanged water of various bactericidal detergent compositions according to JIS Z-8802: 1984 using a pH meter (pH METER F-12, manufactured by HORIBA, Ltd.) The pH value of the liquid at 25 ° C. was measured.
-Judgment criteria A: 9.6 or less.
X: Over 9.6.

[Alkalinity]
・ Measuring method Diluting various sterilizing detergent compositions with distilled water to 0.5% by mass, using 0.5 mol / L hydrochloric acid solution, automatic titrator (COM-980win, manufactured by Hiranuma Sangyo Co., Ltd.) ) To measure the tee in the alkali. After the measurement, the alkalinity at pH 8 was calculated in terms of KOH.
・ Criteria ◎: 6% or less ×: Over 6%

[Bactericidal power against spore-forming bacteria]
-Test strain A Bacillus subtilis spore solution (Eiken Chemical Co., Ltd.) in which Bacillus subtilis spore was adjusted to 10 ⁷ CFU / ml was used for the test.
Test Method Various sterilizing detergent compositions were diluted with sterilized distilled water at 60 ° C. to a concentration of 1% by mass and stirred for 10 minutes to dissolve the sterilizing detergent composition. The diluted solution dissolved by the above method was further diluted with sterilized distilled water to 0.1 mass% and adjusted to a liquid temperature of 25 ° C. 9.9 mL of the bactericide diluted solution was collected in a sterilized test tube, and 0.1 mL of the Bacillus subtilis spore solution was added thereto and mixed to bring the drug into contact with the bacteria. After 10 minutes, 1 mL of the contact solution was taken out, inactivated by adding it to 9 mL of 5% by mass sodium thiosulfate solution, 1 mL of the contact solution was added to 9 mL of phosphate buffer, and the same operation was performed to dilute stepwise. Thereafter, the cells were mixed in SCD-LP medium and cultured at 37 ° C. for 48 hours, and the number of viable bacteria was measured. The Log Reduction of the number of bacteria was calculated from the number of contact bacteria and the number of living bacteria, and evaluated according to the following criteria.
LogReduction = -Log (Number of surviving bacteria / number of contacting bacteria)
・ Criteria ◎: Log Reduction is 4 or more ○: Log Reduction is 3 or more and less than 4 ×: Log Reduction is less than 3

[Bactericidal power against general bacteria]
-Test strain E. coli and Staphylococcus aureus were selected as representatives of general bacteria, and the bacterial solution was prepared as follows.
(1) E. coli (ATCC11229 strain) adjusted to 10 ⁸ CFU / ml was used for the test.
{Circle around (2)} S. aureus (ATCC 6538 strain) adjusted to 10 ⁸ CFU / ml was used for the test.
-Test method The same test was performed by replacing the Bacillus subtilis spore solution of the above-mentioned sporicidal test with an Escherichia coli solution and a Staphylococcus aureus solution, and evaluation was performed based on the same criteria.

[Detergency 1: Detergency against food stains]
・ Adjustment of test pieces (1) Oil stains A clean slide glass (76 mm x 26 mm) was coated with 0.1 g / sheet of oil stains (beef tallow: soybean oil = 1: 1) at room temperature for 24 hours. Dried.
(2) Protein stain An egg yolk equivalent amount of 0.4 g / sheet was applied to a clean slide glass (76 mm × 26 mm) and dried at room temperature for 5 hours.
-Operation method The said test piece was immersed for 5 minutes in the cleaning agent dilution liquid (it heated at 30 degreeC) which diluted various bactericidal cleaning composition to 0.3 mass% with tap water, and stirring washing was performed. The change in the mass of the test piece before and after cleaning at this time was measured, the cleaning rate was calculated by the following formula, and the cleaning performance of each soil was determined according to the following evaluation criteria.
Cleaning rate (%) = ((mass of test piece before washing−mass of test piece after washing) / (mass of test piece before washing−mass of clean glass slide)) × 100
・ Evaluation criteria A: Cleaning rate of 90 to 100%,
○: Cleaning rate of 70 to 90%
X: The cleaning rate is less than 70%,

[Detergency 2: Detergency against model sebum dirt]
・ Test method Prepare an aqueous solution of various sterilizing detergent compositions adjusted to 0.3% by mass in a stirring type detergency tester (model: TM4 Targotometer, manufactured by Daiei Kagaku Seisakusho Co., Ltd.). (Wet Artificial Contaminated Cloth, Laundry Science Association) was put in and the detergency at 30 ° C. was evaluated according to the following criteria. The detergency is calculated from the following equation by measuring the object to be cleaned with a differential meter (model: TC-1800MKII, manufactured by Tokyo Denshoku).
Detergency (%) = (Rw−Rs) / (R0−Rs) × 100
R0: reflectance of white cloth,
Rs: Reflectivity of wet artificially contaminated cloth before washing Rw: Reflectivity and operating conditions of wet artificially contaminated cloth after washing Detergent concentration: 0.3%
Washing temperature: 30 ° C
Washing time: 10 minutes Rinsing temperature: 30 ° C
Rinsing time: 3 minutes x 2 times Tap water hardness: (as CaCO ₃ ) about 50 ppm
Object to be cleaned: Wet artificial contamination cloth (manufactured by Laundry Science Association) of 5 cm long x 5 cm wide was used.
・ Evaluation criteria A: Removal of dirt of 60% or more ○: Removal of dirt of 40% or more and less than 60% ×: Removal of dirt of less than 40%

[Storage stability 1: Organic peracid generation amount stability]
Test method 200 g of various sterilizing detergent compositions are sealed in a 200 ml capacity polyethylene container and stored at 40 ° C. for 4 weeks, and then the concentration of peracetic acid or organic peracid in the various sterilizing detergent compositions is determined. Measurement and comparison with the pre-storage were made according to the following evaluation criteria.
・ Evaluation criteria ◎: Reduction rate is less than 35%,
X: The decrease rate is 35% or more,

[Storage stability 2: Thermal storage]
・ Test method 400ml of various sterilizing detergent compositions were placed in a 500ml Dewar bottle and sealed, and the maximum temperature of the test detergent composition when placed at 50 ° C for 3 days was measured. Judged.
・ Evaluation criteria ◎: Less than 55 ° C ○: Less than 60 ° C
X: 60 or more

  In Tables 1 and 2 below, details of the components used and their effective pure content (%) are as follows, and the numerical values in the table indicate the effective pure content of each component. .

[Component (A)]
Nonionic surfactant 1:
Polyoxyethylene (P = 8) polyoxypropylene (q = 6) linear alkyl (C = 12,13) ether Trade name: Pepol AS-054C (manufactured by Toho Chemical Industry Co., Ltd.)

Nonionic surfactant 2:
Polyoxyethylene alkyl ether product name: Softanol 90 (manufactured by Nippon Shokubai Co., Ltd.)

Anionic surfactant:
Sodium lauryl sulfate trade name: Monogen Y-500T (Daiichi Kogyo Seiyaku Co., Ltd.)

[(B) component]
Sodium percarbonate 1:
Sodium percarbonate, sodium polyhydroxyacrylate coating Product name: PC-PHAS (Hodogaya Chemical Co., Ltd.)

Sodium percarbonate 2:
Sodium percarbonate Product name: PC-A (Hodogaya Chemical Co., Ltd.)

Sodium perborate:
Product name: Perbon (Hishoe Chemical Co., Ltd.)

[Component (C)]
TAED:
Tetraacetylethylenediamine (effective net content: 86%)
Product name: Peractive AN (Azeris Japan)

DOBA:
Decanoyloxybenzoic acid Trade name: Peractive DOBA (Azeris Japan)

Sodium bicarbonate:
Product name: Sodium bicarbonate (manufactured by Tokuyama)

sodium carbonate:
Product name: Soda ash (light) (manufactured by Tokuyama)

Sodium sulfate:
Product name: Neutral anhydrous sodium sulfate (Nippon Chemical Co., Ltd.)

[Bactericidal power against spore-forming bacteria when dissolution temperature is less than 60 ° C]
The temperature when diluting the sterilizing detergent composition to a concentration of 1% by mass is 40 ° C. The sterilizing detergent composition and hydrogen peroxide solution are mixed under the following conditions and then contacted with the bacterial solution Except for the above, both the test strain and the test method were carried out in the same manner as the test for bactericidal activity against the spore-forming bacteria.

The composition of Example 5 was used as the sterilizing detergent composition. The results are shown in the table below.

    The temperature when diluting the sterilizing detergent composition to a concentration of 1% by mass is 35 ° C. or 40 ° C., the sterilizing detergent composition and hydrogen peroxide solution are mixed under the following conditions, The temperature at which the mixture is brought into contact with the mixed solution is the same as that at the time of dilution of the bactericidal detergent composition, and other than that, both the test strain and the test method are performed in the same manner as the test for bactericidal activity against the spore-forming bacteria described above. It was.

The results are shown in the table below.

  As described above, the present bactericidal cleaning composition has a high bactericidal effect and not only can be sterilized in a short time even if it is a spore-forming bacterium, but also has a high cleaning effect on sebum, oil stains and protein stains. The risk of ignition of the sterilizing detergent composition itself is low, and the stability of the organic peracid generating ability is good even when stored at high temperatures. In particular, if the sterilizing detergent composition is diluted at 60 ° C. or more and less than 80 ° C., an excellent sterilizing effect against spore-forming bacteria can be obtained, and the temperature during dilution of the sterilizing detergent composition is 35 ° C. or more. When the temperature is lower than 60 ° C., it can be seen that by adding hydrogen peroxide water separately, a high bactericidal effect equivalent to that at high temperature dilution can be obtained against spore-forming bacteria.

  The sterilizing and cleaning composition of the present invention is suitable for sterilizing and cleaning dishes, cooking utensils, clothes, linens, medical instruments, and the like.

Claims (4)

  (A) 5% by mass or less of surfactant, (B) 3 to 10% by mass of sodium percarbonate and / or sodium perborate, (C) 3.3% of tetraacetylethylenediamine and / or decanoyloxybenzoic acid -17% by mass, (C) / (B) is 1.1-1.7, the pH of the diluted solution of the composition is 9.6 or less, and pH 8.0 is the end point A sterilizing detergent composition, wherein the alkalinity of the composition is 6% or less in terms of KOH.   (A) Surfactant is 1 or more types of surfactant chosen from anionic surfactant and nonionic surfactant, The bactericidal cleaning composition of Claim 1 characterized by the above-mentioned.   The sterilizing detergent composition according to claim 1 or 2 is diluted to 0.05 to 1.0% by mass at a temperature of 60 ° C. or higher and lower than 80 ° C. A method of spore-forming bacteria performed by contact between minutes.   The liquid mixture which added the hydrogen peroxide solution separately to the liquid which diluted the disinfection cleaning composition of Claim 1 or 2 to 0.05-1.0 mass% at the temperature of 35 degreeC or more and less than 60 degreeC And a method for spore-forming bacteria which is performed by bringing a non-human object into contact for 5 to 20 minutes.