JP7013233B2 - Hard surface treatment agent composition - Google Patents

Description

The present invention relates to a hard surface treatment agent composition and a method for treating a hard surface.

At sites where food is cooked, such as in kitchens such as restaurants and food factories, foodstuffs are processed using various cooking utensils including cutting boards. At the end of the work, wash with a detergent or a detergent containing a disinfectant. After that, if necessary, the cooking utensil is immersed in a sterilizing agent aqueous solution such as sodium hypochlorite aqueous solution, or the sterilizing agent aqueous solution such as sodium hypochlorite aqueous solution is wetted on the cooking utensil, or the alcohol preparation is cooked. Cooking utensils are sterilized, such as by spraying on the utensils.

However, if the sterilization process is not performed, of course, even if the sterilization process is performed, a large number of viable bacteria may be present at the time of reusing the cooking utensil. As a cause, for example, when washed with a detergent containing a bactericidal agent, the treatment time is short and a sufficient bactericidal effect cannot be obtained. Further, when immersed in an aqueous solution of a bactericidal agent typified by sodium hypochlorite, good bactericidal properties can be obtained immediately after the bactericidal treatment, but when such a bactericidal agent is used, a cooking utensil is usually used. It is necessary to rinse the cooking utensil, and after the bactericidal agent is rinsed, the bactericidal effect is significantly reduced. Is also a concern.

In order to avoid the re-growth of the fungus, it is conceivable to keep the cooking utensil in contact with the disinfectant until it is reused. There is a possibility that the bactericidal effect may be deactivated due to such factors, the bactericidal agent must be removed by rinsing before use, and the work may be complicated.
Patent Document 1 describes a disinfectant composition for food processing equipment or cooking utensils containing polylysine, protamine and benzyl alcohol.
Further, Patent Document 2 describes a liquid fungicide composition for a hard surface containing polylysine, protamine, sucrose fatty acid ester and water.
Further, Patent Document 3 describes a sterilizing and cleaning agent composition for food processing equipment or cooking utensils, which contains two or more kinds of basic polypeptides and a surfactant and has a pH of 10 or more at 20 ° C. Has been done.

JP-A-2015-127317 Japanese Patent Application Laid-Open No. 2015-113305 Japanese Unexamined Patent Publication No. 2016-160350

Detergents and treatment agents intended to impart a bactericidal effect on a hard surface are often rinsed with water after being applied to the hard surface. Promptly performing such rinsing is a desirable form in terms of work, and it is desired that the bactericidal activity does not decrease even in such a form of use.
The present invention provides a hard surface treatment agent composition that imparts excellent bactericidal activity to a hard surface even when it is applied to a hard surface and then rinsed with water.

The present invention relates to two or more of a basic polypeptide (A) [hereinafter referred to as a component (A)], and one or more compounds selected from an aminocarboxylic acid and a salt thereof (B1) and an inorganic polyvalent anion (B2). (B) [hereinafter referred to as the component (B)], and a hard surface treatment agent composition containing water and having a pH of 10 or more at 20 ° C.

Further, the present invention is a step 1 in which the hard surface treatment agent composition of the present invention is applied to a hard surface, and then a step 2 in which the hard surface to which the composition is applied is rinsed in step 1.
The present invention relates to a method for treating a hard surface.

According to the present invention, there is provided a hard surface treatment agent composition that imparts excellent bactericidal activity to a hard surface even when the treatment is performed by rinsing with water after being applied to the hard surface.

[Hard surface treatment agent composition]
<Ingredient (A)>
The component (A) is a basic polypeptide, and the composition of the present invention contains two or more different basic polypeptides. Hereinafter, the term (A) component may mean two or more basic polypeptides.

The component (A) is preferably a basic polypeptide selected from protamine, polylysine, lysozyme, nisin, and polyarginine. Two or more of these are used.

The protamine is not particularly limited, but for example, by acid-treating one or more fish milts obtained from a group consisting of about 50 or more kinds of fish such as salmon, herring, rainbow trout, and tuna. Examples include protamine purified from nucleoprotamine present in the sperm nucleus of each fish. Protamine is a protamine obtained from salmon, herring, rainbow trout, tuna, and bora milt, more preferably salmon milt, from the viewpoint of further improving bactericidal property, safety, economy, and availability. The resulting protamine. Further, protamine is a quality level protamine that can be preferably used as a food or a food additive from the viewpoint of safety.
Examples of protamine include free protamine, protamine or a salt thereof. Protamine is preferably one or more selected from protamine salt, more preferably protamine sulfate and protamine hydrochloride from the viewpoint of further improving bactericidal property and compoundability, and more preferably from the viewpoint of availability. Is a protamine hydrochloride.

Examples of polylysine include α-polylysine produced by chemical synthesis and ε-polylysine produced by fermentation, which are polyamino acids obtained by linearly polymerizing L-lysine, which is an essential amino acid. Polylysine is preferably ε-polylysine from the viewpoint of further improving the bactericidal property. The molecular weight of polylysine is preferably 3,000 or more, more preferably 4,000 or more, and preferably 10,000 or less, more preferably 8,000 or less, more preferably 8,000 or less, from the viewpoint of further improving the bactericidal property. Is 6,000 or less, more preferably 5,000 or less. This molecular weight is a weight average molecular weight measured by the GPC-LALLS method. Further, polylysine is preferably a polylysine of a quality level that can be used as a food additive from the viewpoint of safety.

The lysozyme is not particularly limited, and examples thereof include egg white lysozyme, which is a food additive separated and purified from chicken egg white, and lysozyme chloride.

Nisin is a 34 amino acid peptide produced by Lactococcus lactis subsp.lactis isolated from fermented milk. The nisin is not particularly limited, but a mixture of an antibacterial polypeptide obtained from a culture solution of Lactococcus lactis subsp. Lactis with sodium chloride can be used.

Examples of polyarginine include poly (L-arginine hydrochloride). As the polyarginine, those having a molecular weight of 5,000 or more and 15,000 or less can be used.

Basic polypeptides generally have different isoelectric points, polylysine below pH 10, protamine above pH 10, lysozyme 11.1-11.4, nisin pH 8.5, polyarginine above pH 10 isoelectric. It is known to have dots. In the present invention, it is preferable to select two types of basic polypeptides having a large difference in isoelectric points, that is, a basic polypeptide (A1) having an isoelectric point of 10 or more and a basic poly having an isoelectric point of less than 10. It is preferable to use the peptide (A2) in combination. It is more preferable that the hard surface treatment agent composition of the present invention contains protamine and / or polyarginine as a component (A1), preferably protamine, and polylysine as a component (A2) from the viewpoint of bactericidal effect. ..

When the component (A) contains (A1) protamine and / or polyarginine and (A2) polylysine, the mass ratio of (protamine and / or polyarginine) / polylysine is the mass ratio of the component (A) to the hard surface. From the viewpoint of improving the residual amount, it is preferably 2/8 or more, more preferably 4/6 or more, and preferably 8/2 or less, more preferably 7/3 or less. Further, when the component (A) contains (A1) protamine and (A2) polylysine, the mass ratio of protamine / polylysine is preferably 2/8 or more, more preferably 4/6 or more, and preferably 8 It is / 2 or less, more preferably 7/3 or less.

<Ingredient (B)>
The component (B) is one or more compounds selected from an aminocarboxylic acid and a salt thereof (B1) and an inorganic polyvalent anion (B2). In the present invention, the inorganic multivalent anion (B2) is conveniently referred to as a compound.

Examples of the aminocarboxylic acid and its salt (B1) include amino acids, ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA), glutamate diacetic acid (GLDA) and their respective salts. Examples of the salt include EDTA2 sodium, EDTA4 sodium, EDTA2 potassium, NTA3 sodium, NTA3 potassium, MGDA2 sodium and GLDA2 sodium.
The aminocarboxylic acid and its salt (B1) are preferably amino acids and salts thereof. Examples of the amino acid and its salt include glycine, L-leucine, valine, isoleucine, serine, aspartic acid, aspartic acid, glutamic acid, lysine, arginine and their respective salts. The amino acid and its salt are preferably one or more amino acids selected from glycine, L-leucine, glutamic acid, arginine and their respective salts and their salts, and more preferably selected from glycine and L-leucine and their respective salts. One or more amino acids and salts thereof. As the salt, an alkali metal salt, an alkaline earth metal salt, a sodium salt and a potassium salt are suitable.

Examples of the inorganic polyvalent anion (B2) include one or more inorganic polyvalent anions selected from borate ion, carbonate ion, sulfate ion, and phosphate ion. In the present invention, one or more inorganic polyvalent anions selected from borate ions and carbonate ions are preferable from the viewpoint of improving the residual amount of the component (A) on the hard surface.
In the present invention, it is preferable to add a water-soluble inorganic salt in order to generate an inorganic polyvalent anion in the composition, particularly in a composition containing water. In the present invention, an inorganic salt having a solubility in water at 20 ° C. of 5 g / 100 g or more is defined as water-soluble. Specifically, a salt of the inorganic polyvalent anion and an ion of an alkali metal selected from sodium and potassium, or an ion of an alkaline earth metal selected from calcium and magnesium is preferable, and a salt with sodium ion is preferable. However, it is suitable from the viewpoint of water solubility.

Examples of the water-soluble inorganic salt that produces borate ions in the composition include sodium tetraborate, sodium metaborate, sodium orthoborate, and the like, and sodium tetraborate is preferable.

Examples of the water-soluble inorganic salt that produces carbonate ions in the composition include sodium carbonate, potassium carbonate, sodium hydrogencarbonate, potassium hydrogencarbonate and the like, and sodium carbonate and potassium carbonate are preferable.

In the present invention, the effect of the aminocarboxylic acid and its salt (B1) is not clear, but it acts on the nitrogen-containing group and / or the carbonyl group of the two basic polypeptides which are the components (A) to form a base. By causing hydrogen-bonding or ionic cross-linking between sex polypeptides and making them pseudopolymerized, the adhesion of component (A) to the object is improved, and it remains without running off even after rinsing. It is presumed that the bactericidal effect can be maintained. Also, in the inorganic polyvalent anion (B2), two or more anions form hydrogen bonds or ionic bonds with the amide group, terminal amino group, and carbonyl group of the polypeptide which is the component (A). It is presumed that polymerization is occurring. That is, by combining the component (B) with the component (A), the component (A) sufficiently remains on the hard surface after the hard surface treatment agent composition of the present invention is applied to the hard surface and then rinsed. However, as one factor, it is presumed that it contributes to the manifestation of the effect of the present invention. The large amount of the component (A) remaining on the hard surface means that the bactericidal power is improved, the bactericidal power is sustained, and the bactericidal power is durable against external influences on the treated hard surface, such as water flow. It is considered to bring about a more preferable effect in improving the durability of the bactericidal power).

<Composition of hard surface treatment agent composition, optional components, etc.>
The hard surface treatment agent composition of the present invention contains the component (A) in an amount of preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, and preferably 0.02% by mass or more. It is contained in an amount of 1.0% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.3% by mass or less.

The hard surface treatment agent composition of the present invention contains the component (B) in an amount of preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, and preferably 0.02% by mass or more. It is contained in an amount of 0.5% by mass or less, more preferably 0.3% by mass or less, still more preferably 0.2% by mass or less. When the component (B) is the component (B1), it is based on the mass of both the carboxylic acid group and the amino group in a non-salt state, and when the component (B) is the component (B2). In, the mass%, mass ratio, etc. are calculated based on the mass as an inorganic polyvalent anion.

In the hard surface treatment agent composition of the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) is preferably 0.1 or more, more preferably 0.15 or more, still more preferably 0.15 or more. It is 0.2 or more, preferably 30 or less, more preferably 5 or less, still more preferably 1.5 or less.

The hard surface treatment agent composition of the present invention has a pH at 20 ° C. of 10 or more, preferably pH 10.5 or more, more preferably 11 or more, and preferably 14 or less, more preferably 13 or less.

The hard surface treatment agent composition of the present invention contains water. The hard surface treatment agent composition of the present invention is preferably a liquid. The hard surface treatment agent composition of the present invention is preferably a liquid composition containing water.

The hard surface treatment agent composition of the present invention preferably contains a surfactant (C) [hereinafter referred to as a component (C)]. Examples of the component (C) include one or more surfactants selected from nonionic surfactants, cationic surfactants and amphoteric surfactants. Further, examples of the component (C) include one or more surfactants selected from nonionic surfactants and cationic surfactants. Although an anionic surfactant may be contained, the content of the anionic surfactant is preferably small or absent from the viewpoint of effectively exhibiting the bactericidal property of the component (A). The content of the anionic surfactant may be 10% by mass or less, further 5% by mass or less, and substantially no content, further 0% by mass in the composition.

More specifically, as the component (C), (C1) polyoxyalkylene alkyl ether, (C2) alkyl glucoside, (C3) alkylamine oxide, (C4) sorbitan fatty acid ester, (C5) sucrose fatty acid ester, Examples thereof include one or more surfactants selected from (C6) fatty acid alkanolamide and (C7) quaternary ammonium salt. The hard surface treatment composition of the present invention is selected from (C1) polyoxyalkylene alkyl ether, (C2) alkyl glucoside, (C3) alkylamine oxide, and (C4) sorbitan fatty acid ester as the component (C) 1. It is preferable to contain more than a kind of surfactant.

Examples of the nonionic surfactant including the polyoxyalkylene alkyl ether of (C1) include a compound represented by the following general formula (c-1).
R ^11c -O- (AO) _q -H (c-1)
[In the formula, R ^11c is an alkyl group having 8 or more and 18 or less carbon atoms, AO is an alkyleneoxy group having 2 or 3 carbon atoms, and q is an average number of added moles, which is 1 or more and 30 or less. ]

From the viewpoint of detergency, the carbon number of R ^11c in the general formula (c-1) is preferably 10 or more and 18 or less. Further, examples of the alkyl group of R ^11c include a primary alkyl group and a secondary alkyl group. Here, the primary alkyl group refers to an alkyl group in which the carbon of R ^11c bonded to "O" in the general formula (c-1) is a primary carbon. Further, the secondary alkyl group refers to an alkyl group in which the carbon of R ^11c bonded to “O” in the general formula (c-1) is a secondary carbon. Examples of R ^11c include a linear alkyl group and a branched chain alkyl group.
The AO is preferably an ethyleneoxy group or a propyleneoxy group, and more preferably an ethyleneoxy group.
q is 1 or more, preferably 1.5 or more, more preferably 3 or more, still more preferably 5 or more, and preferably 30 or less, more preferably 25 or less, more preferably 22 or less, more preferably 20 or less. , More preferably 15 or less, more preferably 12 or less, more preferably 9 or less.

The alkyl glycoside of (C2) is a nonionic surfactant in which a reducing sugar and a higher alcohol are glycosidically bonded, and has the following general formula (c-) from the viewpoints of further improvement of viscosity and bactericidal property, cleanability and low temperature storage stability. Examples thereof include the compound represented by 2).
R ^21c- (OR ^22c ) _{x Gy} (c-2)
[In the formula, R ^21c is a linear alkyl group having 8 or more carbon atoms, preferably 10 or more and 16 or less, preferably 14 or less, and R ^22c is an alkylene group having 2 or more carbon atoms and 4 or less carbon atoms, preferably an ethylene group or. A propylene group, more preferably an ethylene group, G is a residue derived from a reducing sugar, x is a number having an average value of 0 or more and 6 or less, and y is an average value of 1 or more and 10 or less, preferably 5 or less, more preferably. Indicates a number of 2 or less. ]

In the compound of the general formula (c-2), G is a residue derived from a reducing sugar, and the reducing sugar as a raw material of G may be either aldose or ketose. Examples of the reducing sugar as the raw material of G include triose having 3 carbon atoms, tetrose having 4 carbon atoms, pentose having 5 carbon atoms, and hexose having 6 carbon atoms. Specific examples of the aldose include apiose, arabinose, galactose, glucose, lyxose, mannose, galulose, idose, talose, and xylose. In addition, ketose can specifically mention fructose. Among these, the reducing sugar as the raw material of G of the present invention is aldopentose, which is an aldose having 5 carbon atoms, or aldohexose, which is an aldose having 6 carbon atoms, from the viewpoints of viscosity, bactericidal property, cleanability and low temperature storage stability. And more preferably glucose.

The compound of the general formula (c-2) can be easily synthesized by carrying out an acetalization reaction or a ketalization reaction of the reducing sugar and R ^21c- (OR ^22c ) _x -OH using an acid catalyst. Further, in the case of an acetalization reaction, a hemiacetal structure may be used, or a normal acetal structure may be used.

The compound of the general formula (c-2) is also preferable from the viewpoint of viscosity, detergency and low temperature storage stability.

The alkylamine oxide of (C3) has a carbon number of preferably 8 or more, more preferably 10 or more, more preferably 12 or more, and from the viewpoint of further improvement of viscosity and bactericidal property, detergency and low temperature storage stability. It preferably has an alkyl group of 18 or less, more preferably 16 or less. More preferably, the amine oxide of (C3) has one alkyl group having preferably 8 or more carbon atoms, more preferably 10 or more, more preferably 12 or more, and preferably 18 or less, more preferably 16 or less. It has two alkyl groups having 1 or more carbon atoms and 3 or less carbon atoms. Specific preferred examples of the alkylamine oxide of (C3) include compounds of the following general formula (c-3).

[In the formula, R ^31c is an alkyl group having 7 or more carbon atoms, preferably 10 or more, more preferably 11 or more, still more preferably 12 or more, and preferably 18 or less, preferably 16 or less, and R ^33c , R. ^34c is an alkyl group or a hydroxyalkyl group having 1 or more and 3 or less carbon atoms. R ^32c is an alkylene group having 1 or more and 5 or less carbon atoms, preferably 2 or 3 carbon atoms. A is a group selected from -COO-, -CONH-, -OCO-, -NHCO-, -O-, n is a number of 0 or 1, n is 1 and A is -COO-,-. In the case of CONH-, R ^31c is an alkyl group having 7 or more carbon atoms and 15 or less carbon atoms. Preferably n is 0. ]

(C3) is preferably an alkyldimethylamine oxide having an alkyl group having 8 or more carbon atoms and 18 or less carbon atoms. That is, in (C3), R ^31c in the general formula (c-3) preferably has 8 or more carbon atoms, more preferably 10 or more, still more preferably 11 or more, and preferably 18 or less, more preferably 16 or less. The straight-chain alkyl group, R ^33c , R ^34c is an alkyl group having 1 carbon atom, and a compound having n is 0 is preferable.

The sorbitan fatty acid ester of (C4) is preferably a sorbitan fatty acid ester having 8 or more and 22 or less carbon atoms in the fatty acid. Such a compound is obtained by an esterification reaction of sorbitol and / or sorbitan and a fatty acid, and as the raw material sorbitol, a commercially available compound obtained by high-pressure hydrogen reduction of glucose can be used. Alternatively, sorbitan obtained by dehydration cyclization of sorbitol may be used. From the viewpoint of affecting quality such as color deterioration and odor, sorbitol, for example, one commercially available as 70% sorbitol can be used. The raw material fatty acid for the esterification reaction has 8 or more carbon atoms, preferably 12 or more, more preferably 14 or more, still more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, more preferably 18 or less. Examples include fatty acids. Examples of the raw material fatty acid include saturated or unsaturated linear fatty acids. As the raw material fatty acid, a mixed fatty acid can be used. In the present invention, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, palm oil composition fatty acid and beef fatty acid are preferable, and stearate, oleic acid, linoleic acid, palm oil composition fatty acid and beef fat fatty acid are more preferable. Preferably, oleic acid, linoleic acid, palm oil composition fatty acid, and beef fatty acid are more preferable, and oleic acid is even more preferable.

The fatty acid carbon number of the sucrose fatty acid ester of (C5) is preferably 8 or more, more preferably 10 or more, more preferably 12 or more from the viewpoint of bactericidal property, and from the viewpoint of solubility. It is preferably 14 or less.

The sucrose fatty acid ester is preferably one or more selected from sucrose lauric acid ester and sucrose myristic acid ester, more preferably sucrose myristic acid ester, from the viewpoint of bactericidal property and availability.

Sucrose fatty acid esters include monoesters, diesters, triesters, tetraesters, pentaesters, hexaesters, heptaesters and octaesters. Among these, from the viewpoint of bactericidal property and availability, one or more selected from monoesters, diesters and triesters is preferable, and one or more selected from monoesters and diesters is more preferable. And more preferably a monoester.
From the viewpoint of bactericidal properties, the sucrose fatty acid ester has a monoester ratio of preferably 60% by mass or more, more preferably 65% by mass or more, more preferably 70% by mass or more, and even more preferably 75% by mass or more. Yes, and from the viewpoint of availability, it is preferably 90% by mass or less, more preferably 85% by mass or less.
The monoester ratio of the sucrose lauric acid ester or the sucrose myristic acid ester is preferably the above ratio from the viewpoint of bactericidal property and availability.

Examples of the fatty acid alkanolamide of (C6) include fatty acid monoalkanolamide and fatty acid dialkanolamide, and fatty acid dialkanolamide is preferable. Fatty acid diethanolamide is particularly preferred. The number of carbon atoms of the fatty acid is preferably 8 or more, more preferably 10 or more, and preferably 20 or less, more preferably 18 or less, and more preferably 16 or less.

Examples of the quaternary ammonium salt of (C7) include a quaternary ammonium salt having one or more long-chain alkyl groups. Specific examples thereof include a dilong-chain alkyl-type quaternary ammonium salt, a mono-long-chain alkyl-type quaternary ammonium salt, and a benzalkonium-type quaternary ammonium salt. For (C7), a quaternary ammonium salt selected from a di-long-chain alkyl-type quaternary ammonium salt and a mono-long-chain alkyl-type quaternary ammonium salt is preferable, and a di-long-chain alkyl-type quaternary ammonium salt is more preferable. .. The long-chain alkyl group preferably has 8 or more carbon atoms, more preferably 9 or more carbon atoms, and preferably 20 or less, more preferably 18 or less, more preferably 15 or less, more preferably 12 or less, and more preferably 10 or less. It is as follows. Further, as the group other than the long-chain alkyl group contained in the quaternary ammonium salt, an alkyl group having 1 or more carbon atoms and 3 or less carbon atoms is preferable. Examples of the quaternary ammonium salt include those having a halogen ion as a counter ion, and those having a chloride ion are preferable.

When the hard surface treatment agent composition of the present invention contains the component (C), the composition contains the component (C) in an amount of preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and further. It is preferably contained in an amount of 0.05% by mass or more, preferably 5.0% by mass or less, more preferably 2.0% by mass or less, still more preferably 1.0% by mass or less.

A concentrated composition for obtaining the hard surface treatment agent composition of the present invention containing an optional component such as the component (A), the component (B), and the component (C) in the above range is prepared and used. Sometimes it may be diluted with water before use. For example, a concentrated composition containing an optional component such as (A) component, (B) component, (C) component, and water, for example, the concentration of (A) component and (B) component is doubled or more and 50 times or less. It is also possible to prepare a concentrated composition, dilute it with a solvent containing water at the time of use, and use it as the hard surface treatment agent composition of the present invention.

The hard surface treatment agent composition of the present invention further optionally has an organic solvent such as ethanol, propanol, benzyl alcohol, ethylene glycol and propylene glycol, and a component (A) such as polyhexamethylene guanidine, as long as the effect is not impaired. It can contain other cationic bactericides, fragrances, coloring agents and the like.

The hard surface treatment agent composition of the present invention is not particularly limited, but the content of a monohydric alcohol having 1 or more and 3 or less carbon atoms, and further, ethanol is preferably 20% by mass or less, more preferably 10. It is mass% or less, more preferably 5 mass% or less. Even when the content of monohydric alcohol having 1 or more and 3 or less carbon atoms and ethanol is in such a range, excellent bactericidal properties can be obtained, and bactericidal properties are maintained even after rinsing.

When the hard surface treatment agent composition of the present invention contains the component (A), the component (B), and a monovalent alcohol having 1 or more and 3 or less carbon atoms in the above range, the pH is preferably further in the above range. If so, the composition can be applied as it is to a hard surface, for example, a food processing facility or a cooking utensil. Further, after dilution, the content of the component (A), the content of the component (B), the content of the monovalent alcohol having 1 or more and 3 or less carbon atoms, and the pH are within the predetermined range. Two or more concentrated solutions may be diluted with water and mixed (when two or more concentrated solutions are used) to prepare a hard surface treatment agent composition of the present invention to be applied to food processing equipment or cooking utensils. In the present invention, it is preferable to apply the hard surface treatment agent composition of the present invention to a hard surface in the form of foam.

In the present invention, the component (B) is added to a hard surface treatment agent composition containing two or more kinds of the component (A) and water and having a pH of 10 or more at 20 ° C. to treat the hard surface. Provided is a method for increasing the amount of the component (A) adsorbed on a hard surface from the agent composition.
Further, in the present invention, the component (B) is added to a hard surface treatment agent composition containing two or more kinds of the component (A) and water and having a pH of 10 or more at 20 ° C. to obtain the hard substance. Provided is a method for improving the bactericidal activity of a surface treatment agent composition.
Further, in the present invention, (A) from the hard surface treatment agent composition after rinsing by applying the hard surface treatment agent composition of the present invention to a hard surface in the form of foam and then leaving it to stand for a predetermined time. Provided is a method for increasing the amount of a component adsorbed on a hard surface. The leaving time is preferably 15 minutes or more, preferably 120 minutes or less, more preferably 60 minutes or less, and more preferably 45 minutes or less.
The matters described in the hard surface treatment agent composition of the present invention and the method for treating a hard surface described later can be appropriately applied to these methods.

<Hard surface treatment method>
The hard surface treatment agent composition of the present invention is used in contact with a hard surface.
According to the present invention, the hard surface treatment agent composition of the present invention is applied to a hard surface, for example, a hard surface of a food processing facility or a cooking utensil, and then a hard surface to which the composition is applied in step 1, for example. Step 2 of rinsing the hard surface of food processing equipment or cooking utensils
A method for treating a hard surface is provided. Other steps may be included between the steps 1 and 2.

In step 1, the hard surface treatment agent composition of the present invention is applied to a hard surface of an article such as a food processing facility or a cooking utensil by a method such as coating, dipping, or spraying for treatment. As a result, the component (A) and the component (B) adhere to the hard surface, and the sterilization treatment is performed. In the treatment method of the present invention, the pH of the hard surface treatment agent composition before application to the hard surface is preferably 10 or more, more preferably pH 10.5 or more, still more preferably 11 or more, and preferably 11 or more. Is 14 or less, more preferably 13 or less. After application to a hard surface, the pH of the composition may vary.

The hard surface that is the subject of the present invention is preferably the hard surface of an article selected from food processing equipment and cooking utensils. Examples of food processing equipment include large equipment such as meat slicers, noodle making machines, fryer, and rice making machines. Moreover, the cooking utensil which is the object of this invention includes a cutting board, a kitchen knife, a colander and the like. The method for treating a hard surface of the present invention is more effective for situations in which minute spaces such as scratches, cracks or gaps such as net conveyors or belt conveyors installed in food processing equipment, cutting boards or colanders are present among them. It is a target. The food processing equipment or cooking utensil includes a member made of stainless steel, and it is preferable to apply the hard surface treatment agent composition of the present invention to the member made of stainless steel in step 1.

Examples of the method for applying the hard surface treatment agent composition of the present invention to a hard surface include methods such as spraying, foaming with a foamer or a former, and dipping. It is preferable that the hard surface treatment agent composition of the present invention is sprayed or applied and applied to a hard surface. In the present invention, the hard surface treatment agent composition of the present invention is applied to a hard surface in the form of foam or liquid, preferably in the form of foam. The operation of applying the hard surface treatment agent composition of the present invention to a hard surface can be performed once or more. In the present invention, it is preferable to apply the hard surface treatment agent composition of the present invention to a hard surface in the form of foam. When applied in the form of foam, the foam specific volume is preferably 0.01 g / mL or more, more preferably 0.02 g / mL or more, still more preferably 0.05 g / mL or more, and preferably 0.30 g / mL. Below, it is more preferably 0.20 g / mL or less, still more preferably 0.10 g / mL or less.

In order to sufficiently exhibit the bactericidal effect of the hard surface treatment agent composition of the present invention, in the treatment method of the present invention, it is preferable to apply the hard surface treatment agent composition in step 1 and then leave it for a predetermined time. That is, in the treatment method of the present invention, from the viewpoint of bactericidal properties, after applying the hard surface treatment agent composition to the hard surface and allowing it to stand for a predetermined time, it is preferably 15 minutes or more, and preferably 120 minutes or less. It is preferably left for 60 minutes or less, more preferably 45 minutes or less, and then rinsed (step 2).

The hard surface to which the hard surface treatment agent composition of the present invention is applied may be left in an open system or a closed system, but an open system is preferable. Further, the temperature at which the hard surface to which the hard surface treatment agent composition of the present invention is applied is left to stand is preferably 5 ° C. or higher, more preferably 10 ° C. or higher, and economically, from the viewpoint of further improving the bactericidal property. From the viewpoint of the above, it is preferably 50 ° C. or lower, more preferably 40 ° C. or lower, and more preferably 30 ° C. or lower.

In the treatment method of the present invention, the amount of the hard surface treatment agent composition of the present invention applied to the hard surface is preferably 0.02 g / cm ² or more, more preferably 0.03 g / from the viewpoint of further improving the antibacterial property. It is cm ² or more, more preferably 0.04 g / cm ² or more, and preferably 1.0 g / cm ² or less, more preferably 0.5 g / cm ² or less. This applied amount is the applied amount of the composition per unit area of the hard surface. In this application amount, when the hard surface to be applied includes a space portion that the composition does not contact, the area of the space portion is included in the unit area. That is, in the applied amount of the composition, for example, when the portion of the hard surface such as the food processing equipment or the cooking utensil to which the composition is applied is reticulated, the space portion is included in the area constituting the unit area. .. This applied amount is suitable for the hard surface treatment agent composition of the present invention containing the component (A) and the component (B) in the above range.

In the treatment method of the present invention, the hard surface to which the hard surface treatment agent composition of the present invention is applied can be scrubbed, if necessary. At that time, it is preferable to scrub with an elastic member containing the hard surface treatment agent composition of the present invention.

In step 2, the hard surface to which the hard surface treatment agent composition of the present invention is applied is rinsed in step 1. Preferably the hard surface is rinsed with water. The hard surface may be washed by rinsing.
The rinsing conditions are not particularly limited, but with a water force of 0.5 L / min or more and 25 L / min or less, 1 second or more, and 3 minutes or less, preferably 1 minute or less, more preferably 30 seconds or less. It is more preferable to rinse in 15 seconds or less.

In the treatment method of the present invention, after step 2, the residual amount of the component (A) on the hard surface is preferably 0.5 × ^10-6 g / cm ² or more, more preferably from the viewpoint of further improving the bactericidal property. Is 0.7 × 10 ^-6 g / cm ² or more, preferably 10.0 × 10 ^-6 g / cm ² or less, more preferably 8.0 × 10 ^-6 g / cm ² or less, more preferably. It is 5 × ^10-6 g / cm ² or less, more preferably 3 × ^10-6 g / cm ² or less.

The article having a hard surface after the step 2 can be used as it is for a predetermined purpose of the article. Further, after the step 2 is completed, the article having a hard surface is stored at, for example, 0 ° C. or higher and 50 ° C. or lower under the conditions of 30 minutes or more and 72 hours or less, and then for a predetermined purpose such as food processing or cooking. Can be used for.

The predetermined components shown in Tables 1 to 3 were mixed, and then the pH was adjusted with NaOH to prepare a hard surface treatment agent composition, which was evaluated as follows. The results are shown in Tables 1 to 3.

[I] Sterilization test (1) Preparation of bacteria / dirt solution (1-1) Bovine serum albumin (BSA) (manufactured by Sigma) was dissolved in ion-exchanged water to prepare a 4% aqueous solution.
(1-2) The liquid of (1-1) was filtered through a 0.2 μm filter.
(1-3) Mix 1 mL of the bacterial solution of Pseudomonas aeruginosa ATCC15692 adjusted to OD = 0.01, 1.25 mL of the aqueous solution of (1-2), and 7.75 mL of sterile water, and mix the bacteria / dirt. It was made into a liquid.

(2) Evaluation method of viable cell count [Step 1]
(2-1) 1 mL of the hard surface treatment agent composition shown in Tables 1 to 3 on one side of a 3 cm x 8 cm SUS test piece, using a pump former (for biore hand wash, manufactured by Kao Corporation) in the form of foam. Was applied evenly. As the test piece, a 3 cm × 8 cm SUS304 test piece was washed with a dishwashing detergent, rinsed with tap water, rinsed with ethanol, and then dried at room temperature.
(2-2) In an open system, the test piece after (2-1) was allowed to stand at 25 ° C. for 30 minutes.

[Step 2]
(2-3) After (2-2), the test piece was rinsed with 500 mL of tap water.

[Drying process]
(2-4) In an open system, the test piece was allowed to stand at 25 ° C. for 20 hours and dried.

[Sterilization evaluation method]
(2-5) 0.3 mL of fungus / dirt solution was applied to the dried test piece. The initial number of bacteria applied was 5.5 (cfu / 24 cm ² ]).
(2-6) A paper towel impregnated with 20 g of a 0.2 mass% benzalkonium chloride aqueous solution is laid inside a polypropylene sealed container (Tight Box No. 3, manufactured by Chopra Kogyo Co., Ltd.) and placed on the paper towel. A slide glass stand was placed on the surface, and the test piece was placed on it with the surface coated with the fungus / dirt liquid facing up. The container was closed and stored at 37 ° C. for 3 hours. Under this condition, the surface coated with the test piece bacteria / dirt liquid was kept in a moist state. Benzalkonium chloride was used just in case to eliminate the influence of environmental bacteria contained in water and the like.
(2-7) The bacteria / dirt liquid on the test piece was wiped off, and the wiped liquid was diluted 10 times by mass with physiological saline.
(2-8) By the same operation, a 100-mass-fold diluted solution, a 1000-mass-fold diluted solution and a 10000-mass-fold diluted solution were obtained.
(2-9) 0.1 mL of all the solutions obtained in (2-7) and (2-8) was applied to SMA (standard agar medium, manufactured by Nissui Pharmaceutical Co., Ltd.), and the temperature was 37 ° C. for 24 hours. It was cultured.
(2-10) The number of grown colonies was counted, and the number of bacteria per test piece [cfu / 24 cm ² ] was determined. The number of bacteria is a logarithm with a base of 10 and is shown in Tables 1 to 3. In the table, "<1.0" indicates that it was below the detection limit.

[II] Measurement of basic polypeptide adhesion (1) Treatment method The test piece is a 10 cm x 20 cm SUS304 test piece washed with a dishwashing detergent, rinsed with tap water, rinsed with ethanol, and then rinsed. The one dried at room temperature was used. Place the test piece horizontally and spray 8 mL of the hard surface treatment composition on it in the form of foam using a pump former (for biore hand wash, manufactured by Kao Corporation), and allow it to stand at 20 ° C for 20 minutes. Placed. Then rinsed with 500 mL of tap water.

(2) Measurement of residual amount of (A) component (μg / cm ² ) Sakura cut cotton (Yamato Plant Co., Ltd.) is cut into a size of 2 cm x 2 cm, and one piece is filled with 2 mL of ion-exchanged water using tweezers. It was immersed in a test tube and impregnated with water. The entire surface of the SUS test piece was wiped with water-impregnated cotton wool, and the cotton wool was rinsed in a test tube with 2 mL of water. This operation was repeated twice. In addition, the cotton wool after the operation was squeezed in the same test tube, and the impregnated liquid was recovered. The liquid in the test tube was filtered using a 0.2 μm filter. The amount of the component (A) in the liquid after filtration was measured using a protein assay Lowry kit (manufactured by Nacalai Tesque, Inc.). The measurement result was divided by the area of the SUS test piece (200 cm ² ) to calculate the residual amount (μg / cm ² ) of the component (A) per unit area. The results are shown in Tables 1 to 3. (A) The larger the residual amount of the component, the better the bactericidal activity. Further, it is considered that a large residual amount of the component (A) brings about more preferable effects in terms of sustainability of bactericidal activity and durability of bactericidal activity, as described above. In this evaluation, it is preferable that the residual amount of the component (A) is 0.5 μg / cm ² or more in the composition having a pH of 12.4. Further, the larger the value, the more preferable. Further, in the composition having a pH of 11.0, the residual amount of the component (A) is preferably 0.8 μg / cm ² or more. Further, the larger the value, the more preferable.

In Table 3, in the method of applying the composition, "foam-like" means application in the foam-like form shown in the above evaluation. This aspect corresponds to Example 2-1 in Table 2. Further, "liquid" means that the same composition was applied to the test piece in liquid form in the same amount as the applied amount in the form of foam shown in the above evaluation, and the test was performed.

The components in the table are as follows.
-Polylysine: ε-polylysine, food additive, manufactured by JNC Corporation, weight average molecular weight 4,700
・ Protamine: Protamine derived from salmon, protamine hydrochloride, processed food, manufactured by Maruhanichiro Foods Co., Ltd. ・ Polyarginine: poly (L-arginine hydrochloride) (molecular weight 5,000 to 15,000, manufactured by Sigma-Aldrich Japan)
・ Glycin: Glycin, manufactured by Wako Junyaku Co., Ltd. ・ L-leucine: L-leucine, manufactured by Wako Junyaku Co., Ltd. ・ Sodium carbonate: Sodium carbonate, manufactured by Sigma Aldrich Japan Co., Ltd., carbonate ion source ・ Sodium tetraborate: Sodium tetraborate decahydrate, manufactured by Sigma Aldrich Japan Co., Ltd., boric acid ion source / non-ionic surfactant 1: polyoxyethylene alkyl ether (HLB13.3, manufactured by Kao Co., Ltd. Emargen 709)
-Nonionic surfactant 2: Lauryldimethylamine oxide (Ancitor 20N manufactured by Kao Corporation)
-Nonionic surfactant 3: Myristyldimethylamine oxide (Ancitor 40N manufactured by Kao Corporation)

Implementation of Examples 1-1 to 1-6 and Comparative Examples 1-1 to 1-3 in Table 1, Examples 2-1 to 2-6 and Comparative Examples 2-1 to 2-2 and Table 3 in Table 2 In Example 3-1 the concentration of the component (A) was set to a relatively low concentration, and the composition was brought into contact with a test piece having a hard surface and then rinsed with water. Under such conditions, the pH of the composition using two kinds of the component (A) can be adjusted by using the component (B) in combination as in Examples 1-1 to 1-6 and 2-1 to 2-6. It can be seen that the number of bacteria is reduced and excellent bactericidal activity can be obtained at any pH regardless of whether the pH is 11.0 or 12.4. Further, it can be seen that in Examples 1-1 to 1-6, 2-1 to 2-6, the residual amount of the component (A) is larger than that in the comparative example at any of pH 11.0 and 12.4. On the other hand, in Comparative Examples 1-1 to 1-3, 2-1 to 2-2, the number of bacteria was larger than that of Examples in both pH 11.0 and 12.4, and the bactericidal activity was inferior. I understand. Further, it can be seen that in Comparative Examples 1-1 to 1-3 and 2-1 to 2-2, the residual amount of the component (A) is smaller than that in the examples at any of pH 11.0 and 12.4.
Among the examples, in Examples 1-6 and 2-6, fine bubbles are formed as compared with other examples, the foam adhesion is good, and even if the foam is allowed to stand for 20 minutes after application. The foam persistence was better.
Further, from the results in Table 3, it can be seen that when the hard surface treatment agent composition of the present invention is applied to a hard surface in the form of foam, the residual amount of the component (A) is further improved.

Claims (12)

One or more compounds (B) selected from two or more of basic polypeptides (A) [hereinafter referred to as (A) component], aminocarboxylic acid and a salt thereof (B1), and an inorganic polyvalent anion (B2). Hereinafter referred to as component (B)], and a hard surface treatment agent composition containing water and having a pH of 10 or more at 20 ° C.
The aminocarboxylic acid and its salt (B1) are amino acids and salts thereof.
Hard surface treatment agent composition. The hard surface treatment composition according to claim 1, wherein the component (A) is a basic polypeptide selected from protamine, polylysine, lysozyme, nisin, and polyarginine. The hard surface treatment agent composition according to claim 1 or 2 , wherein the inorganic polyvalent anion (B2) is one or more inorganic polyvalent anions selected from borate ions and carbonate ions. The hard surface treatment agent composition according to any one of claims 1 to 3 , which contains a surfactant (C) [hereinafter referred to as a component (C)]. The hard surface treatment agent composition according to claim 4 , wherein the component (C) is one or more surfactants selected from a nonionic surfactant and a cationic surfactant. The components (C) are (C1) polyoxyalkylene alkyl ether, (C2) alkyl glucoside, (C3) alkylamine oxide, (C4) sorbitan fatty acid ester, (C5) sucrose fatty acid ester, (C6) fatty acid alkanolamide and (C7) The hard surface treatment agent composition according to claim 4 or 5 , which is one or more surfactants selected from quaternary ammonium salts. Step 1 in which the hard surface treatment agent composition according to any one of claims 1 to 6 is applied to a hard surface, and then step 2 in which the hard surface to which the composition is applied is rinsed in step 1.
How to treat a hard surface. The method for treating a hard surface according to claim 7 , wherein in step 1, the composition is applied to a hard surface in the form of foam. The method for treating a hard surface according to claim 7 or 8 , wherein in step 1, the composition is applied to a hard surface and then left to stand for a predetermined time. Aminocarboxylic acid and a salt thereof in a hard surface treatment composition containing two or more types of basic polypeptide (A) [hereinafter referred to as (A) component] and water and having a pH of 10 or more at 20 ° C. (B1) and one or more compounds (B) selected from the inorganic polyvalent anion (B2) are added to increase the amount of the component (A) adsorbed on the hard surface from the hard surface treatment agent composition. Method. Aminocarboxylic acid and a salt thereof in a hard surface treatment composition containing two or more types of basic polypeptide (A) [hereinafter referred to as (A) component] and water and having a pH of 10 or more at 20 ° C. A method for improving the bactericidal activity of the hard surface treatment agent composition by adding one or more compounds (B) selected from (B1) and an inorganic polyvalent anion (B2). The hard surface treatment agent composition according to any one of claims 1 to 6 is applied to a hard surface in the form of foam and then left to stand for a predetermined time to be rinsed from the hard surface treatment agent composition. (A) A method for increasing the amount of a component adsorbed on a hard surface.