JP2007119593A - Deodorant composition for cip cleaning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a deodorant composition for CIP (Cleaning in place) cleaning, which efficiently removes a remaining flavor in CIP cleaning, in which a solvent smell hardly remains after cleaning and which easily removes foams in a rinsing process. <P>SOLUTION: The deodorant composition for CIP cleaning comprises (A) a solvent having 6-9 SP value at 25°C, (B) a surfactant and (C) a compound represented by formula (C1): (RCOO)nX (C1) (n is an integer of 1-3; R is a 11-23C hydrocarbon group; X is a hydrogen atom, an alkaline earth metal or R' (R' is a residue after removal of a hydroxy group from a 1-12C monohydric-trihydric alcohol)). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a deodorant composition for CIP cleaning and a CIP cleaning method. Specifically, the present invention relates to a CIP cleaning deodorant composition and a CIP cleaning method used for cleaning manufacturing equipment and manufacturing equipment such as food and beverage factories.

  In food factories, beverage factories, etc., the production equipment and equipment are cleaned when the production type is switched or at the end of the operation, etc., but it is CIP cleaning (fixed cleaning) for places where piping and tanks are difficult to remove and clean. )It is carried out. This CIP cleaning is a method of cleaning by flowing a cleaning agent without disassembling the apparatus with the word “Cleaning in place”.

  CIP is widely used in food factories and beverage factories. Especially in beverage factories, when switching production varieties, etc., thoroughly wash so that the previous filling does not remain on the production line and that the flavor blended in the previous filling does not enter the next filling. is important. For this reason, in food factories, etc., CIP cleaning is carried out over time. In particular, flavors tend to remain in the packing parts (seal parts) such as pipe connection parts in the production line in order to sufficiently remove the flavors. Takes a lot of effort.

  In recent years, with the increase in production speed and the increase in beverage varieties, the frequency of switching is increased, and the time loss of the CIP process is a cause of remarkably reducing productivity.

  Conventionally, in CIP cleaning, alkali cleaning, acid cleaning, and cleaning using a combination of these are appropriately performed in accordance with dirt inside manufacturing equipment and piping of manufacturing equipment, but in order to increase cleaning efficiency, In some cases, an oxidizing agent such as chlorate, isocyanurate, percarbonate, or perborate is used. However, a sufficient deodorizing effect is still not obtained, and damage to the device may occur depending on the use situation.

Under these circumstances, techniques for further improving the cleaning efficiency and flavor removal efficiency in CIP cleaning have been proposed. For example, Patent Document 1 discloses a technique for performing deodorization cleaning using a nonionic surfactant, but even with this method, flavor removal is not sufficient. Patent Document 2 discloses a technique for deodorizing and cleaning using a solvent having a SP value of 6 to 9 and a surfactant. Although the deodorizing performance is good, the foam during rinsing is highly rinsed. Take time.
JP 2003-49193 A Japanese Patent Laying-Open No. 2005-200467

  In view of the above situation, the object of the present invention is for CIP cleaning, which can efficiently remove the remaining flavor in the currently performed CIP process, has almost no solvent odor after cleaning, and is easy to blow out in the rinsing process. It is to provide a deodorant.

The present invention relates to a solvent (A) having an SP value at 25 ° C. of 6 to 9 (hereinafter referred to as “component (A)”), a surfactant (B) [hereinafter referred to as “component (B)”) and the following formula (C1 ) -Containing deodorant composition containing the compound (C) [hereinafter referred to as component (C)].
(RCOO) _n X (C1)
[In the formula, n is an integer of 1 to 3, R is a hydrocarbon group having 11 to 23 carbon atoms, X is a hydrogen atom, an alkaline earth metal, or R ′ (R ′ is 1 to 3 having 1 to 12 carbon atoms). It is a residue excluding the hydroxyl group of the monohydric alcohol). ]

  The present invention also relates to a CIP cleaning method including a step (1) of bringing the cleaning medium (I) containing the component (A), the component (B) and the component (C) into contact with an object to be cleaned.

  According to the present invention, in CIP cleaning, flavor can be efficiently removed, there is almost no solvent odor after cleaning, rinsing is easy, and cleaning time can be shortened compared to the conventional method. The present invention is particularly suitable for cleaning food industry plants.

<(A) component>
As (A) component of this invention, a C5-C20 aliphatic hydrocarbon is preferable from a base odor and a deodorizing viewpoint, and a C8-C14 aliphatic hydrocarbon is more preferable. In particular, an aliphatic hydrocarbon having 10 to 14 carbon atoms is preferable. Specifically, pentane, isopentane, hexane, isohexane, cyclohexane, heptane, isoheptane, octane, isooctane, nonane, isononane, decane, isodecane, undecane, isoundecane, dodecane, isododecane, tridecane, isotridecane, tetradecane, isotetradecane, pentadecane , iso pentadecane, hexadecane, isohexadecane, heptadecane, Isoheputadekan, octadecane, iso-octadecane, nonadecane, Isononadekan, C _{10-.alpha.-olefins,} C _{12-.alpha.-olefins,} but C _{14-.alpha.-olefins,} and the like, preferably , decane, isodecane, undecane, isoundecanoic, dodecane, isododecane, tridecane, isotridecanoic, tetradecane, iso tetradecane, C _12-.alpha. Olefins, and the like.

The SP value indicates a solubility parameter δ ((cal / cc) ^1/2 ) that is generally used as a measure of compatibility between substances. As the component (A) of the present invention, from the viewpoint of deodorization. Those having an SP value of 6 to 9 are used, and 7 to 8.5 are more preferable. 7-8 are particularly preferable.

<(B) component>
Examples of the component (B) include nonionic surfactants, anionic surfactants, amphoteric surfactants, and cationic surfactants. From the viewpoint of assisting the emulsifying dispersibility of the component (A), nonionic surfactants are included. And anionic surfactants are preferred.

  Nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene alkylamine, polyoxyalkylene fatty acid ester, alkyl polyglycoside, alkyl glyceryl ether, glycerin fatty acid mono- or diester, polyglycerin fatty acid ester, sucrose fatty acid ester, Polyoxyethylene-polyoxypropylene block polymers, polyoxyalkylene polyhydric alcohol fatty acid esters and the like can be mentioned, and polyoxyalkylene fatty acid esters, alkyl polyglycosides, alkyl glyceryl ethers, polyoxyalkylene alkyl ethers and the like are preferable. The polyoxyalkylene alkyl ether preferably has an HLB value of 3 or more and less than 8 according to the Griffin calculation formula.

  Anionic surfactants include fatty acid alkali metal salts, alkyl sulfonates, alkyl benzene sulfonates, alcohol sulfate esters, alkyl phosphate esters, polyoxyalkylene alkyl sulfates, polyoxyalkylene alkyl carboxylates, alkyls. Examples include sulfosuccinate.

  Examples of the amphoteric surfactant include alkylamine oxide, alkyldimethylaminoacetic acid betaine, alkylamidopropyl betaine, alkylhydroxysulfobetaine, alkylcarboxymethylhydroxyethylimidazolinium betaine and the like.

  Examples of the cationic surfactant include alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, and benzalkonium chloride.

<(C) component>
In the formula (C1) of the component (C), the carbon number of R is preferably 11 to 19, and more preferably 11 to 17. R is preferably an alkyl group, more preferably a saturated alkyl group.

  Examples of the component (C) include fatty acids, fatty acid alkaline earth metal salts, and fatty acid esters, but fatty acids and fatty acid esters are preferable from the viewpoints of the stability of the blending system and the defoaming effect.

  Fatty acids are those having 12 to 24 carbon atoms, preferably fatty acids having 12 to 20 carbon atoms, and more preferably 12 to 18 carbon atoms. As for fatty acids, R in the formula (C1) is preferably an alkyl group, and more preferably a saturated alkyl group. Specific examples include lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid, linoleic acid, linolenic acid, eicosanoic acid, behenic acid, tetracosanoic acid and the like. Examples of fatty acid alkaline earth metal salts include Ca salts and Mg salts of the above fatty acids.

  Examples of fatty acid esters include lauryl stearate, lauryl oleate, stearyl oleate, methyl stearate, butyl stearate, oleyl stearate, stearyl stearate, 2-ethylhexyl stearate, oleyl oleate, glycerol trilaurate, glycerol tristearic acid Examples include esters.

<Deodorant composition for CIP cleaning>
In the deodorant composition for CIP cleaning of the present invention, the weight ratio of the component (A), the component (B), and the component (C) is 0.001 / 99.999-50 (C) / [(A) + (B)]. / 50, more preferably 0.002 / 99.998 to 30/70, and particularly preferably 0.004 / 99.996 to 10/90 from the viewpoint of rinsing properties and deodorizing properties.

  In the present invention, the component (A) is an aliphatic hydrocarbon having 10 to 14 carbon atoms, the component (B) is an alkyl polyglycoside, an alkyl glyceryl ether, a polyoxyalkylene fatty acid ester, a polyoxyl having an HLB of 3 or more and less than 8. A combination which is a surfactant selected from alkylene alkyl ethers and the component (C) is a compound selected from stearic acid and stearic acid ester is more preferable in terms of cleaning effect and rinsing properties.

  In addition to the (A) component, the (B) component, and the (C) component, an antifoaming agent, a rust preventive agent, a chelating agent, a water-soluble solvent, and the like are added to the CIP cleaning deodorant composition of the present invention as necessary. Can be used.

  The deodorant composition for CIP cleaning of the present invention is used for CIP cleaning as a cleaning liquid diluted with a non-aqueous solvent, an aqueous solvent, water or the like. The dilution medium is preferably water from the viewpoint of economy and safety. The diluted cleaning liquid has a total effective concentration of the component (A), the component (B), and the component (C) of 0.01 to 50% by weight, and further 0.1 to 30% by weight from the viewpoint of economy and deodorization. %, Particularly 0.2 to 10% by weight is preferred.

<CIP cleaning method>
As described above, the CIP cleaning deodorant composition of the present invention is preferably used as a diluted cleaning liquid for CIP cleaning. The cleaning liquid is preferably circulated and cleaned in a range of 10 ° C. to 98 ° C. so as to come into contact with the piping and various devices that are the objects to be cleaned in CIP cleaning. Further, the flow rate of the cleaning liquid flowing in the pipe is preferably 0.5 to 5 m / second, and more preferably 1 to 3 m / second.

  Moreover, in this invention, the CIP washing | cleaning method including the process (1) which makes the washing | cleaning medium (I) containing (A) component, (B) component, and (C) component contact to-be-washed | cleaned material can be performed. As the component (A), the component (B), and the component (C), those described above are used.

  In this case, the medium (I) is preferably a cleaning liquid obtained by diluting the deodorant composition of the present invention. In the medium (I), the total effective concentration of the component (A), the component (B) and the component (C) is 0.01 to 50% by weight, more preferably 0.1 to 30% by weight, particularly 0.2 to 10%. % By weight is preferred. The deodorant composition for CIP cleaning containing the components (A), (B) and (C) at such concentrations can be used as the cleaning medium (I) as it is.

  For example, CIP washing in a beverage plant is performed by (a) hot water washing → (b) alkali washing → (c) hot water washing → (d) acid washing → (e) hot water washing. Later, if necessary, further washing with hypochlorite and hot water may be performed. The step (1) may be performed in any one of such cleaning steps, specifically, before and / or after any of the steps (a) to (e), or any step. It can be performed with substitution or simultaneously with any step. The step (1) can be performed alone or simultaneously with each step as long as it is between the steps (a) to (e), but considering the total CIP time, simultaneously with any of the steps (a) to (e) It is preferable to carry out, and it is more preferable to carry out simultaneously with any one of the steps (a) to (d) from the viewpoints of solvent odor reduction and deodorization. Furthermore, from the viewpoint of reducing the solvent odor, it is preferably performed simultaneously with any of the steps (a), (c), and (d). From the viewpoint of deodorizing properties, it is simultaneously performed with the step (b) or (d). Preferably it is done. Note that a plurality of steps (1) may be performed.

Examples 1-6 and Comparative Examples 1-4
A deodorant composition for CIP cleaning was prepared with the composition shown in Table 1 (the concentration of each component represents% by weight as an effective component). Using them, tests of deodorization (flavor odor), base odor, and foam suppression were conducted by the following methods. The results are shown in Table 1.

(1) Deodorization (1-1) DUT 1S EPDM (Ethylene / Propylene / Diene / Rubber) Packing (Osaka Sanitary Metal Industry Cooperative) is put on a commercial drink (peach natural water: manufactured by JT) at 70 ° C. A test object was immersed for 2 hours.

(1-2) Cleaning method A predetermined amount of the CIP cleaning deodorant composition (total amount of 6 g) in Table 1 is weighed into a 300 mL beaker used in the following cleaning step (b), and water and NaOH aqueous solution are put in total. The amount was 300 g (NaOH concentration 2 wt%). One test object scented by the above method was put into each 300 mL beaker, and the washing steps (a) to (e) were performed. Thereafter, the test object was dried. The sample was transferred to 13 standard bottles (glass container having a diameter of 4.8 cm and a height of 8.5 cm), and then stored at room temperature for 12 hours as an evaluation sample.

(Washing process)
(A) Hot water washing 1: 80 ° C., 20 minutes immersion stirring (b) Alkali cleaning: 2 wt% NaOH aqueous solution, 80 ° C., 20 minutes immersion stirring (c) Hot water washing 2: 80 ° C., 20 minutes immersion stirring (d) Acid cleaning: 0.6 wt% HNO ₃ aqueous solution, 20 minutes immersion stirring (e) Hot water washing 3: 80 ° C., 20 minutes immersion stirring

(1-3) Evaluation method Five-stage evaluation was implemented about the flavor odor derived from the said commercial drink of a test piece, and the base odor derived from the deodorizer composition for CIP washing | cleaning by the four panelists. It can be said that the smaller the score, the better the deodorizing effect. The average value of the evaluation points by the four panelists was evaluated as “odor residual”. Judgment criteria are as follows.
* Judgment criteria 5: Strong smell 4: Strong smell 3: Slight smell 2: Slight smell 1: No smell

(2) Antifoaming A dilute solution (NaOH concentration 2% by weight) with a total amount of 200 g of deodorant composition for CIP cleaning (total amount of 4 g as effective component) in Table 1 was prepared with water and NaOH aqueous solution and stirred by a stirrer. Heat treatment is performed at 80 ° C. for 40 minutes in a water bath. Thereafter, 4 g of the liquid is weighed, and 396 g of tap water is added to prepare a 100-fold diluted solution. Use a circulation system (flow rate 0.5 L / min) in which 300 mL of the 100-fold diluted solution is placed in a glass tube with a capacity of 1100 mL so that the liquid can escape from the bottom, and the liquid is extracted from the bottom and dropped from the top using a pump. The foam test was conducted. The amount of foam when the 100-fold diluted solution was circulated for 3 minutes and the amount of foam 1 minute after the circulation was stopped were measured.

* 1: Reagent product (purity 99%), SP value 7.6 at 25 ° C, melting point 20 ° C or less * 2: Reagent product (purity 99%), SP value 7.7 at 25 ° C, melting point 20 ° C or less * 3: Reagent product (purity 99%), SP value 7.8 at 25 ° C., melting point 20 ° C. or lower * 4: Alkyl polyglycoside (manufactured by Kao Corporation, “AG124”)
* 5: Alkyl glyceryl ether (“GE-EH (S)” manufactured by Kao Corporation)
* 6: Lunac S-98, manufactured by Kao Corporation
* 7: Kanto Chemical (Deer Class 1)
* 8: EXOPARL EH-S manufactured by Kao Corporation

Claims (6)

A deodorant composition for CIP cleaning containing a solvent (A) having a SP value of 6 to 9 at 25 ° C., a surfactant (B), and a compound (C) represented by the following formula (C1).
(RCOO) _n X (C1)
[In the formula, n is an integer of 1 to 3, R is a hydrocarbon group having 11 to 23 carbon atoms, X is a hydrogen atom, an alkaline earth metal, or R ′ (R ′ is 1 to 3 having 1 to 12 carbon atoms). It is a residue excluding the hydroxyl group of the monohydric alcohol). ]   The deodorization for CIP cleaning according to claim 1, wherein the weight ratio of (A), (B), (C) is in the range of 0.001 / 99.999 to 50/50 as (C) / [(A) + (B)]. Agent composition.   The deodorant composition for CIP cleaning according to claim 1 or 2, wherein (A) is at least one selected from hydrocarbon compounds having 5 to 24 carbon atoms.   The deodorant composition for CIP cleaning according to any one of claims 1 to 3, wherein (B) is at least one selected from nonionic surfactants.   The deodorant composition for CIP cleaning according to any one of claims 1 to 4, wherein (C) is at least one selected from saturated fatty acids, alkaline earth metal salts thereof, and esters thereof. A cleaning medium (I) containing a solvent (A) having an SP value of 6 to 9 at 25 ° C., a surfactant (B) and a compound (C) represented by the following formula (C1) is brought into contact with the object to be cleaned. CIP cleaning method including the process (1) to make.
(RCOO) _n X (C1)
[In the formula, n is an integer of 1 to 3, R is a hydrocarbon group having 11 to 23 carbon atoms, X is a hydrogen atom, an alkaline earth metal, or R ′ (R ′ is 1 to 3 having 1 to 12 carbon atoms). It is a residue excluding the hydroxyl group of the monohydric alcohol). ]