JP2010004971A - Method for suppressing malodor generated from waste, drain outlet and the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for suppressing a malodor generated from raw garbage and the like. <P>SOLUTION: The method suppresses the generation of malodor by making (a) one or more compounds selected from 6-12C saturated aliphatic aldehyde, terpene aldehyde, aromatic aldehyde, sesquiterpene ketone, methyl nonyl acetaldehyde, undecylenic aldehyde, lyral, myrac aldehyde, dupical, triplal, methyl dihydro jasmonate, cis-jasmone and nerolidol and (b) aqueous composition containing phenoxy glycol-based solvent, come into contact with an object to be treated existing sulfur-containing amino acid or protein containing sulfur-containing amino acid. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a method for suppressing the generation of malodor containing a volatile sulfur compound from a malodor source such as waste or drainage in which a sulfur-containing amino acid such as garbage and / or a protein containing a sulfur-containing amino acid is present, The present invention relates to an odor generation inhibitor for waste or drainage.

  Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-206882) can be referred to for a technique for imparting slow solubility to the drain outlet cleaning agent. In addition, a technique using a surfactant is disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-220600) as a technique for suppressing generation of slime and bad odor around a sink such as a drain outlet and a triangular corner. Many are described. Furthermore, it is disclosed by patent document 3 (Unexamined-Japanese-Patent No. 2001-348308) that the specific fragrance | flavor component can suppress generation | occurrence | production of the malodor derived from a microbe.

JP 2006-206882 A JP 2002-220600 A JP 2001-348308 A

  Wastes such as wastewater outlets and kitchen waste produce volatile sulfur compounds such as hydrogen sulfide and methyl mercaptan as they decay by bacteria, which are offensive odor components that cause discomfort even at very low concentrations. is there. These malodorous components are considered to contain volatile sulfur compounds generated by decomposition of sulfur-containing amino acids such as cysteine and methionine and / or proteins containing sulfur-containing amino acids by the action of methionine lyase and cysteine lyase.

  As a method for suppressing the generation of volatile sulfur compounds, Patent Document 3 proposes a method in which a fragrance component is brought into contact. However, these fragrance components are brought into contact with an object having a large load of dirt such as a drain outlet or garbage. However, since the fragrance component has high volatility and is volatilized after the treatment, the effect is temporary, and there is a problem that the generation of malodor immediately reoccurs.

  Patent Document 1 discloses a technique for gradually dissolving an active ingredient, but it is used in a form close to a gel, as can be seen from the fact that 10% of a thickener with a very high 1% viscosity is used. Although it is a technique and a technique that applies mint oil is shown as a specific example, it does not show any effect in terms of suppressing the generation of volatile sulfur compounds.

  Furthermore, Patent Document 2 discloses a method for suppressing slime / bad odor around a sink, such as a drain outlet or a triangular corner, containing a surfactant as an active ingredient. There is no suggestion that an effect of suppressing generation of a high volatile sulfur compound can be obtained.

  The subject of this invention is providing the method of suppressing generation | occurrence | production of the malodor containing a volatile sulfur compound from the malodor generating source, such as a waste material in which the protein containing a sulfur-containing amino acid and / or sulfur-containing amino acid exists.

  Another object of the present invention is to provide a malodor generation inhibitor for waste or drainage.

  The present invention provides, as means for solving the problems, (a) a saturated aliphatic aldehyde having 6 to 12 carbon atoms, a terpene aldehyde, an aromatic aldehyde, a sesquiterpene ketone, methylnonylacetaldehyde, undecylene aldehyde, rilal, mylacaldehyde, A sulfur-containing amino acid and / or sulfur-containing amino acid comprising an aqueous composition containing one or more compounds selected from dupical, tripral, methyl dihydrojasmonate, cis-jasmon and nerolidol, and (b) a phenoxyglycol solvent Provided is a method for suppressing the generation of malodor which is brought into contact with a processing object containing a protein containing.

The present invention also provides: (a) a saturated aliphatic aldehyde having 6 to 12 carbon atoms, a terpene aldehyde, an aromatic aldehyde, a sesquiterpene ketone, methylnonylacetaldehyde, undecylenaldehyde, rilal, mylacaldehyde One or more compounds selected from Dupicar, Tripral, Methyl dihydrojasmonate, cis-jasmon and nerolidol,
(B) a phenoxy glycol solvent,
(C) To provide a malodor generating inhibitor for waste or drainage, which contains a surfactant and water and has a viscosity at 20 ° C. of 15 to 300 mPa · s.

  According to the method for suppressing the generation of malodor of the present invention, a high effect of suppressing the generation of malodor can be obtained by the action of the active ingredient having a low concentration.

<Aqueous composition used in the method of the present invention>
[(A) component]
The fragrance component of the component (a) used in the present invention is an inhibitor of the generation of volatile sulfur compounds by facultative anaerobic microorganisms and aerobic bacteria living in the home, or an enzyme that generates hydrogen sulfide from cysteine or methionine to methyl They can be used as inhibitors of enzymes that produce mercaptans, and at the same time, they can be used as perfuming and deodorizing agents that suppress the generation of unpleasant odors in the home environment.

  The fragrance | flavor of (a) component is a C6-C12 saturated aliphatic aldehyde, terpene aldehyde, aromatic aldehyde, sesquiterpene ketone, methylnonyl acetaldehyde, undecylene aldehyde, laral, mylac aldehyde, dupical, triplar, methyl One selected from dihydrojasmonate, cis-jasmon and nerolidol.

  (A) The fragrance of the component is the isolation of essential oils such as lemongrass oil, celery herb oil, lemon oil, lime oil, orange Valencia, coriander oil, basil oil, jasmine oil, thyme oil, laurel oil, grapefruit oil It is an ingredient.

The saturated aliphatic aldehyde having 6 to 12 carbon atoms is preferably a straight chain, and examples thereof include hexanal, octanal, nonanal, decanal, undecanal, and dodecanal;
Examples of terpene aldehydes include citral, citronellal, and hydroxycitronellal;
Examples of aromatic aldehydes include heliotropin, phenylpropyl aldehyde, anisaldehyde, vanillin, cyclamen aldehyde, ethyl vanillin, helional, phenylacetaldehyde, cinnamic aldehyde, amyl cinnamamic aldehyde, hexyl cinnamamic aldehyde;
Examples of sesquiterpene ketones include α-ionone, β-ionone, α-damascone, β-damascone, α-methylionone, α-isomethylionone, and nootkatone.

  These compounds may be used in the form of essential oils or may be chemically synthesized for their economic efficiency. You may use these fragrance | flavors in combination of 2 or more types.

  In the present invention, it is particularly preferable to use 1, 2 or 3 or more selected from octanal, decanal, citral, citronellal, β-damascone, methyldihydrojasmonate and cis-jasmon as essential components, particularly in combination of two or more. In this case, it is more preferable to use at least one selected from octanal and decanal in combination with at least one selected from methyl dihydrojasmonate, cis-jasmon and β-damascon.

[Component (b)]
The component (b) used in the present invention is a phenoxy glycol solvent and has an effect of further improving the enzyme inhibitory activity of the component (a). Specific examples of the compound include compounds represented by the following general formula (1).

[In formula, R is an ethylene group or a propylene group, n is a number of 1-3. ]
Among these, R is an ethylene group, n is a compound having 1 to 3 or 1-phenoxy-2-propanol, and phenoxyethanol (a compound in which R is an ethylene group and n is 1) is particularly preferable. In addition, the compound of general formula (1) may be a mixture of n = 1 to 3 compounds and may also contain n = 4 or more compounds, but 100 parts by weight of n = 1 to 3 compounds. On the other hand, it is desirable that the compound of n = 4 is 10 parts by mass or less.

The aqueous composition of the present invention contains water in order to exhibit the effects of the present invention. Water is contained at least 30% by mass in the composition.
<Other ingredients>
The aqueous composition used in the method of the present invention comprises a surfactant that acts as a penetrant [hereinafter referred to as component (c)] for the purpose of effectively penetrating the component (a) and component (b) into the object to be treated. It is preferable to contain.

  The component (c) surfactant is a compound having one or more hydrocarbon groups having 9 to 18 carbon atoms and having cmc (critical micelle concentration) in water, an anionic surfactant, a cation interface An activator, a nonionic surfactant, and an amphoteric surfactant can be mentioned.

  Examples of the anionic surfactant include alkylbenzene sulfonates having 9 to 15 carbon atoms, soaps having 10 to 16 carbon atoms, alkyl sulfates having 10 to 16 carbon atoms, and oxyalkylene groups having 1 to 4 average addition moles (alkylenes). Group is ethylene group or propylene group), polyoxyalkylene alkyl ether sulfate having 10 to 16 carbon atoms of alkyl group, sulfosuccinic acid diester salt of alcohol having 10 to 14 carbon atoms, α-sulfo fatty acid (10 to 10 carbon atoms) 18) Lower alkyl (carbon number 1 or 2) ester salts can be mentioned.

  Examples of the nonionic surfactant include an oxyalkylene group having an average addition mole number of 4 to 30 (an alkylene group is an ethylene group or a propylene group), a polyoxyethylene alkyl ether having an alkyl group of 10 to 16 carbon atoms, and an 8 to 8 carbon atoms. 16 alkyl glycosides (average condensation degree of glucose is 1 to 2), one alkyl group having 10 to 18 carbon atoms which may be divided by an amide group, an ester group or an amide group, and the remainder having 1 to 3 carbon atoms The tertiary amine oxide which is an alkyl group or a hydroxyalkyl group can be mentioned.

  Examples of the cationic surfactant include tetraalkylammonium salts having 1 to 2 alkyl groups having 8 to 14 carbon atoms and the remaining alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, or benzyl group. it can.

  As the amphoteric surfactant, one alkyl group having 10 to 18 carbon atoms which may be separated by an amide group, an ester group or an amide group and a 2-hydroxysulfopropyl group, a sulfopropyl group or a carboxymethyl group are selected. One group includes hydroxysulfobetaine, sulfobetaine, and carbobetaine, the remaining being an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group.

As the component (c),
(C1): Alkyl benzene sulfonate having 9 to 15 carbon atoms, soap having 10 to 16 carbon atoms, alkyl sulfate having 10 to 16 carbon atoms, oxyalkylene group having an average addition mole number of 1 to 4 (the alkylene group is an ethylene group) Or a propylene group) and an anionic surfactant selected from polyoxyalkylene alkyl ether sulfates having 10 to 16 carbon atoms in the alkyl group,
(C2): one alkyl group having 10 to 18 carbon atoms which may be interrupted by an amide group, an ester group or an amide group, one 2-hydroxysulfopropyl group and the remaining alkyl group having 1 to 3 carbon atoms Or an amphoteric surfactant selected from sulfobetaines that are hydroxyalkyl groups, and (c3): an oxyalkylene group having an average addition mole number of 4 to 30 (the alkylene group is an ethylene group or a propylene group), and the carbon number of the alkyl group 10 to 16 polyoxyethylene alkyl ether, alkyl glycoside having 8 to 16 carbon atoms (average condensation degree of glucose is 1 to 2), an amide group, an ester group or an amide group which may be interrupted by 10 to 18 carbon atoms Selected from tertiary amine oxides, one alkyl group and the remaining being an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group Nonionic surfactants,
A combination of two or more surfactants selected from the above is preferable from the viewpoint of increasing the permeability and adjusting the preferable viscosity described later. When the surfactant is contained, it is preferable to always include the component (c3).

  The aqueous composition used in the method of the present invention is obtained by dissolving the components (a) and (b) and, if necessary, the component (c) in water. The water to be used can be water from which metal components dissolved in a trace amount such as ion-exchanged water are removed, and sterilized water in which 0.1 to 3 ppm of a disinfectant such as hypochlorous acid is dissolved. Although it can be used, the bactericidal agent is for imparting a preservative effect to the aqueous composition, and the bactericidal agent is not necessary for the expression of the malodor control effect of the present invention.

  The content ratio of each component in the aqueous composition used in the method of the present invention is as follows.

  (A) component becomes like this. Preferably it is 0.001-1 mass%, More preferably, it is 0.001-0.5 mass%, Most preferably, it is 0.005-0.5 mass%, (b) component is Preferably it is 0.2-10 mass%, More preferably, it is 0.3-10 mass%, Most preferably, it is 0.3-5 mass%. In consideration of the case where the aqueous composition is used as a stock solution, the component (a) and the component (b) are preferably contained in a proportion not less than the lower limit, and the aqueous composition after treatment when used as a stock solution is stable. Considering that the odor of itself is not a concern, it is preferably less than or equal to the upper limit.

  The mass ratio [(a) / (b)] of the component (a) and the component (b) is preferably 0.0001 to 0.5, particularly preferably 0.001 to 0.5.

  The proportion when the component (c) is contained is preferably 1 to 60% by mass, more preferably 10 to 60% by mass, and particularly preferably 15 to 60% by mass.

  The aqueous composition used in the method of the present invention preferably contains a metal sequestering agent [component (d)] for the purpose of further improving the effects of the components (a) and (b). The compound of (7) can be illustrated.

(1) Phosphate compounds such as phytic acid or alkali metal salts or alkanolamine salts thereof;
(2) ethane-1,1-diphosphonic acid, ethane-1,1,2-triphosphonic acid, ethane-1-hydroxy-1,1-diphosphonic acid and its derivatives, ethanehydroxy-1,1,2-triphosphonic acid Phosphonic acids such as ethane-1,2-dicarboxy-1,2-diphosphonic acid, methanehydroxyphosphonic acid, or alkali metal salts or alkanolamine salts thereof;
(3) Phosphonocarboxylic acids such as 2-phosphonobutane-1,2-dicarboxylic acid, 1-phosphonobutane-2,3,4-tricarboxylic acid, α-methylphosphonosuccinic acid, or alkali metal salts or alkanolamine salts thereof ;
(4) amino acids such as aspartic acid, glutamic acid and glycine, or alkali metal salts or alkanolamine salts thereof;
(5) Nitrilotriacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, glycol etherdiaminetetraacetic acid, hydroxyethyliminodiacetic acid, triethylenetetraaminehexaacetic acid, diencoric acid, alkylglycine-N, N-diacetic acid Aminopolyacetic acid such as aspartic acid-N, N-diacetic acid, serine-N, N-diacetic acid, glutamic acid diacetic acid, ethylenediamine succinic acid, or a salt thereof, preferably an alkali metal salt or an alkanolamine salt;
(6) Organic acids such as diglycolic acid, oxydisuccinic acid, carboxymethyloxysuccinic acid, citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, gluconic acid, carboxymethylsuccinic acid, carboxymethyltartaric acid, or alkali metal salts thereof Or an alkanolamine salt;
(7) Amino poly (methylene phosphonic acid), its alkali metal salt or alkanolamine salt, polyethylene polyamine poly (methylene phosphonic acid) or alkali metal salt or alkanolamine salt.

  Among these, at least one selected from the group consisting of (2), (5), and (6) is preferable, and at least one selected from the group consisting of (5) and (6) is more preferable. . The most preferred component (d) is citric acid or a salt thereof.

  The content ratio of the component (d) in the aqueous composition used in the method of the present invention is preferably 0.1 to 10% by mass, more preferably 0.3 to 7% by mass, and particularly preferably 0.7 to 7% by mass. %.

  The aqueous composition used in the method of the present invention can optionally contain, as a stabilizer, a lower alcohol such as ethanol or propanol, a hydrotrope such as p-toluenesulfonate, a preservative, and a colorant.

  From the viewpoint of malodor control, the aqueous composition used in the method of the present invention is effective to keep the volatile component (a) in the treatment target for a long time, and the viscosity at 20 ° C. is 15 to 300 mPa · s. Is more preferable, 20 to 300 mPa · s is more preferable, and 20 to 250 mPa · s is particularly preferable.

  Although a thickener etc. can also be used for adjustment of a viscosity, it is preferable to adjust by containing (c) component. Specifically, the component (c1), the component (c2), and the component (c3) are divided into (c1) component / [(c2) component + (c3) component] = 0.05 to 5.0, preferably 0.05. It is preferable to adjust to the said viscosity range by containing by mass ratio of -3.0, especially preferably 0.05-2.0.

  The aqueous composition used in the method of the present invention preferably has a pH at 20 ° C. of 5.5 to 7.4, more preferably 6.0 to 7.4. The pH can be adjusted using an acid agent such as hydrochloric acid, sulfuric acid or phosphoric acid and an inorganic base such as sodium carbonate, sodium hydroxide, potassium carbonate or potassium hydroxide.

  An aqueous composition used in the method of the present invention, which contains components (a) to (c) and water and is adjusted to the above viscosity range, contains a sulfur-containing amino acid and / or a protein containing a sulfur-containing amino acid as it is. It can also be used as an odor generation inhibitor for waste or drain outlets.

<Method for suppressing the generation of malodor (bad odor suppression method)>
The malodor control method of the present invention suppresses the generation of malodor generated from the protein by bringing the aqueous composition into contact with a treatment target containing a sulfur-containing amino acid and / or a protein containing a sulfur-containing amino acid. Is the method.

  The bad odor is considered to be a large source of volatile sulfur compounds generated by the degradation of the protein by the action of methionine lyase or cysteine lyase. Of the volatile sulfur compounds that are unpleasant odor components, hydrogen sulfide is produced from cysteine, which is a sulfur-containing amino acid, by cysteine desulfurase, and methyl mercaptan is produced from methionine by the action of methioninase (methionine-γ-lyase). Furthermore, dimethyl sulfide, dimethyl disulfide, and dimethyl trisulfide are generated enzymatically or oxidatively from methyl mercaptan or hydrogen sulfide.

  In the malodor control method of this invention, said aqueous composition is made to contact with respect to a process target.

  The processing target to which the malodor control method of the present invention is applied is waste such as garbage, drainage ports where sewage flows or adheres and stays.

  As a method of bringing the aqueous composition into contact with the treatment target, a spraying method, a spraying method, or the like is suitable. After contact, it is preferably left for 30 minutes or longer, more preferably for 1 hour or longer.

  In the malodor control method of the present invention, when the aqueous composition is brought into contact with waste such as garbage, the amount of the component (a) in contact with the waste is preferably 1 to 10,000 ppm (mass basis) in order to enhance the suppression effect. ), More preferably 1 to 5000 ppm, particularly preferably 5 to 5000 ppm. The amount of component (b) is preferably 200 ppm (mass basis) to 100,000 ppm, more preferably 300 ppm to 100,000 ppm, and particularly preferably 300 ppm to 50,000 ppm.

  In the malodor control method of the present invention, when bringing the aqueous composition into contact with the drain outlet, in order to increase the suppression effect, the stock solution of the aqueous composition may be applied as it is, or may be diluted and used. In that case, it is desirable to be within the above-mentioned concentration range. In addition, as a coating method, in addition to the method of pouring the liquid as it is, when the viscosity is 60 mPa · s or less, it may be sprayed using a sprayer or attached as a foam from a container equipped with a foaming device. You can also.

  By applying the malodor control method of the present invention to an object to be treated such as waste, malodor is suppressed by the following action.

  A typical example of an amino acid contained in a sulfur-containing amino acid and / or a protein containing a sulfur-containing amino acid is methionine, and a typical example of a protein is cysteine. Such compounds generate volatile sulfur compounds by the action of bacteria-derived methioninase, cysteine desulfurase, and the like, and cause malodor. The component (a) contained in the aqueous composition used in the malodor control method of the present invention (or contained in the malodor generation inhibitor for waste or drainage) has an action of inhibiting the activity of such an enzyme. The component (b) is considered to act to enhance the inhibitory action of the component (a). Therefore, it is not necessary for the aqueous composition used in the malodor control method of the present invention to contain an antibacterial agent, a bactericidal agent, or the like to exert an antibacterial / bactericidal effect. An effect can be obtained.

<Odor generation suppression effect>
[Method for preparing test bacterial solution]
10 mL of sewage in 8 kitchen sink drain traps was collected. The collected sewage was transported to the laboratory at room temperature. Immediately after transportation, 0.1 mL of the sewage was added to a sterile centrifuge tube (50 mL) containing 5 mL of Mueller Hinton medium (Becton Dickinson) and stirred with a vortex mixer. The sterilized centrifuge tube was placed in a thermostatic bath at 25 ° C. and cultured for 24 hours to obtain a test bacterial solution.

  10 μL of the above test bacterial solution is placed in a sterilized 110 mL screw mouth bottle, 50 μL of a test sample diluted to 36% with 3.5 ° DH hard water is added to the bacterial solution, sealed, and then allowed to stand at 25 ° C. for 6 hours. did.

  After standing for 6 hours, deodorization evaluation was performed in the following five stages using a panel of 5 persons including 2 persons of odor judgment, and the average score was obtained.

0: Odorless 1: Slightly odor 2: Smell 3: Very odor 4: Smells unacceptably Examples 1-14, Comparative Examples 1-3
The aqueous composition shown in Table 1 was prepared, and the test for confirming the above-mentioned malodor control effect was performed using them. The pH was adjusted with a 0.1 N sulfuric acid aqueous solution and a 0.1 N sodium hydroxide aqueous solution. The results are shown in Table 1. In addition, the aqueous composition shown to a table | surface is a thing with the viscosity in 20 degreeC of the range of 20-40 mPa * s.

(B)
PHG30: Polyoxyethylene (3 mol) phenyl ether (manufactured by Nippon Emulsifier Co., Ltd.)
(C1)
ES: Sodium polyoxyethylene alkyl ether sulfate ester [The raw material alcohol is an alcohol obtained by hydroformylation using 1-decene and 1-dodecene 50/50 (mass ratio) as raw materials. After adding an average of 2 moles of ethylene oxide to this alcohol, it was sulfated with sulfur trioxide and neutralized with sodium hydroxide. The ratio of the total polyoxyethylene branched chain alkyl ether sulfate sodium in the total polyoxyethylene alkyl ether sulfate sodium was 42% by mass. ]
(C2)
AO: N-lauryl-N, N-dimethylamine oxide (c3)
Nonion: 12- and 13-carbon mixed alkyl secondary alcohol with an average of 7 mol of EO (Softanol 70H, manufactured by Nippon Shokubai Co., Ltd.)
(Other)
PPG1000: Polypropylene glycol having a weight average molecular weight of 1000 Preservative: Proxel BDN (manufactured by Avicia Co., Ltd.)
p-TS: sodium p-toluenesulfonate

Claims (5)

  (A) C6-C12 saturated aliphatic aldehyde, terpene aldehyde, aromatic aldehyde, sesquiterpene ketone, methylnonylacetaldehyde, undecylene aldehyde, laral, mylacaldehyde, dupical, tripral, methyl dihydrojasmonate, An aqueous composition containing at least one compound selected from cis-jasmon and nerolidol and (b) a phenoxyglycol solvent is used as a treatment object containing a sulfur-containing amino acid and / or a protein containing a sulfur-containing amino acid. A method of suppressing the generation of malodors that is brought into contact.   The method according to claim 1, wherein the aqueous composition has a viscosity at 20 ° C. of 15 to 300 mPa · s.   When the aqueous composition is brought into contact with the waste to be treated, the component (a) is contacted at a rate of 1 to 10,000 ppm (mass basis), and the component (b) is contacted at a rate of 200 ppm to 100,000 ppm (mass basis). The method to suppress generation | occurrence | production of the volatile sulfur compound in any one of Claim 1 or 2.   The method for suppressing the generation of malodor according to any one of claims 1 to 3, wherein the aqueous composition further contains (c) a surfactant. (A) C6-C12 saturated aliphatic aldehyde, terpene aldehyde, aromatic aldehyde, sesquiterpene ketone, methylnonylacetaldehyde, undecylene aldehyde, laral, mylacaldehyde, dupical, tripral, methyl dihydrojasmonate, One or more compounds selected from cis-jasmon and nerolidol,
(B) a phenoxy glycol solvent,
(C) A malodor generation inhibitor for waste or drainage, which contains a surfactant and water and has a viscosity at 20 ° C. of 15 to 300 mPa · s.