JP2011252160A - Cip cleaning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CIP (cleaning in place) cleaning method using a deodorant composition for CIP, hardly injuring a production installation, and having low foamability and excellent deodorant properties.SOLUTION: The CIP cleaning method includes (i) carrying out a cleaning step by an alkali detergent, (ii) carrying out a deodorant cleaning step by the deodorant composition for the CIP cleaning, and (iii) carrying out a cleaning step by an acid detergent. The deodorant composition for the CIP cleaning contains 0.01-30.0 wt.% of one or more kinds of nonionic surfactants selected from the group consisting of a fatty acid ester of a polyoxyalkylene, a fatty acid ester of a polyoxyalkylene sorbitan, a fatty acid ester of sorbitan, a fatty acid ester of a polyoxyalkylene sorbitol, a fatty acid ester of glycerol, a fatty acid ester of a polyglycerol, a fatty acid ester of a polyoxyalkylene glycerol, a polyoxyethylene-polyoxypropylene block polymer, a reverse-type polyoxyethylene-polyoxypropylene block polymer, a fatty acid ester of a polyethylene glycol, a fatty acid ester of propylene glycol, a polyoxyalkylene alkyl ether, a fatty acid ester of sucrose and the like as a component (A), water as a component (B) and 0.09-10.0 wt.% of a defoaming agent as a component (C).

Description

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

In food factories, beverage factories, etc., cleaning is performed by CIP cleaning (stationary circulation cleaning) for manufacturing equipment and manufacturing equipment. Here, CIP cleaning is an acronym for “cleaning in place”. Without disassembling the manufacturing equipment and equipment, the cleaning fluid is circulated as it is to clean the inside. This cleaning method is also called stationary cleaning or stationary circulation cleaning, and is widely used for cleaning manufacturing facilities such as food factories and beverage factories.
However, with the recent increase in varieties such as various beverage products, the unique flavors of various beverages remain inside the manufacturing equipment, and the conventional CIP cleaning cannot always remove them effectively. There is a problem of scenting (adherence of odor) to the next manufactured product after switching. Therefore, the remaining odors are removed by adding oxidizing agents such as hypochlorite, isocyanurate, percarbonate and perborate in the washing and deodorizing process when switching products. . However, these methods still do not provide a sufficiently satisfactory deodorizing effect, and therefore measures are taken by repeating the deodorizing process or increasing the concentration of the oxidizing agent. The problem is that the cost for the treatment is high and the production equipment is damaged by the oxidizing agent used.

  Another problem when performing CIP cleaning is the foamability of the circulating fluid during CIP cleaning. In the cleaning of tanks, what is called spray balls are installed, and the circulating fluid is actually sprayed into the tank in the form of a spray. There is a place of conditions. In manufacturing facilities, there are other places where foaming is very easy. In CIP cleaning, if a large amount of bubbles are generated in such a place, there may be a problem that the amount of circulating liquid decreases and cleaning cannot be continued. For this reason, there has been a demand for a CIP cleaning deodorant or a CIP cleaning deodorization method that does not use an oxidant or the like that causes damage to manufacturing facilities, and has a low foaming property and an excellent deodorizing effect.

  Accordingly, an object of the present invention is to provide a CIP cleaning method using a deodorant composition for CIP cleaning that has little damage to manufacturing equipment, has low foaming properties, and has excellent deodorizing performance.

  As a result of intensive studies to solve these problems, the present inventors have completed the present invention. That is, the present invention includes (i) a cleaning step with an alkaline cleaner, (ii) a deodorizing and cleaning step with a deodorant composition for CIP cleaning, and then (iii) a cleaning step with an acid cleaner. The deodorant composition for CIP cleaning comprises, as component (A), a polyoxyalkylene fatty acid ester, a polyoxyalkylene sorbitan fatty acid ester, a sorbitan fatty acid ester, a polyoxyalkylene sorbite fatty acid ester, Polyoxyalkylene sorbitol fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyalkylene glycerin fatty acid ester, polyoxyethylene-polyoxypropylene block polymer, reverse type polyoxyethylene-polyoxypropylene Lock polymer, polyethylene glycol fatty acid ester, propylene glycol fatty acid ester, polyoxyalkylene alkyl ether, sucrose fatty acid ester, ethylenediamine type polyoxyethylene-polyoxypropylene block polymer, reverse type ethylenediamine type polyoxyethylene-polyoxypropylene block polymer One to one or more nonionic surfactants selected from the group consisting of 0.01 to 30.0 wt%, water as component (B), and 0.09 to 10.0 as component (C) A CIP cleaning method is provided which contains a wt% content.

Moreover, this invention provides the said CIP washing | cleaning method whose nonionic surfactant of (A) component is HLB8-18.
Moreover, this invention provides the said CIP washing | cleaning method whose antifoamer of (C) component is HLB7 or less.
Moreover, this invention provides the said CIP washing | cleaning method whose to-be-washed | cleaned material is a manufacturing facility of a drink.

  ADVANTAGE OF THE INVENTION According to this invention, the deodorizer composition for CIP washing | cleaning which has little deodorizing performance with respect to the smell of the manufactured product which has little damage to manufacturing equipment and manufacturing equipment, has low foamability, and remains in manufacturing equipment A CIP cleaning method using can be provided.

  In the deodorant composition for CIP cleaning of the present invention, the component (A) is a polyoxyalkylene fatty acid ester, a polyoxyalkylene sorbitan fatty acid ester, a sorbitan fatty acid ester, a polyoxyalkylene sorbit fatty acid ester, a polyoxyalkylene sorbitol fatty acid ester, glycerin. Fatty acid ester, polyglycerin fatty acid ester, polyoxyalkylene glycerin fatty acid ester, polyoxyethylene-polyoxypropylene block polymer, reverse type polyoxyethylene-polyoxypropylene block polymer, polyethylene glycol fatty acid ester, propylene glycol fatty acid ester, polyoxy Alkylene alkyl ether, sucrose fatty acid ester, ethylenediamine type polyoxyethylene-polyoxy Propylene block polymer, a reverse type of ethylenediamine-type polyoxyethylene-polyoxypropylene block nonionic surfactant of one or more kinds selected from the group consisting of polymer, it is preferable used in the emulsification of the normal oil component. Among these, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, and polyoxyethylene sorbit fatty acid ester are particularly preferable because they have excellent deodorizing performance.

  In addition, as the nonionic surfactant (A), those having an HLB in the range of 8 to 18 are preferable because they have excellent deodorizing performance, and those having an HLB in the range of 10 to 15 are more preferable. If the HLB is less than 8, the dissolving power of flavors and odorous components in the deodorant composition is undesirably reduced.

  Specific examples of the preferred nonionic surfactant of component (A) used in the present invention include, for example, polyethylene glycol monolaurate, sorbitan monooleate, polyoxyethylene sorbitan monooleate, glyceryl monostearate, Polyoxyethylene glyceryl monostearate, polyoxyethylene sorbitol tetraoleate, hexaglyceryl monostearate, hexaglyceryl monooleate, propylene glycol monostearate, polyoxyethylene-polyoxypropylene block polymers (for example, Asahi Denka Kogyo ( Adeka Pluronic P-85), reverse type polyoxyethylene-polyoxypropylene block polymer (for example, Adeka Pluronic 17R-2, manufactured by Asahi Denka Kogyo Co., Ltd.) Polyethylene glycol monooleate, polyoxyethylene oleyl ether, sucrose stearate, ethylenediamine type polyoxyethylene-polyoxypropylene block polymer (for example, Adeka Pluronic TR-702, manufactured by Asahi Denka Kogyo Co., Ltd.), reverse type And ethylenediamine type polyoxyethylene-polyoxypropylene block polymer (for example, Adeka Pluronic TR-913R, manufactured by Asahi Denka Kogyo Co., Ltd.).

  (A) Content of the nonionic surfactant of a component is 0.01-30.0 weight% with respect to the whole quantity of a deodorizing composition, Preferably it is 0.1-10 weight%, More preferably, it is 0. .5 to 5.0% by weight. If it is less than 0.01% by weight, a sufficient deodorizing effect cannot be obtained, and even if it exceeds 30.0% by weight, the deodorizing effect is not further improved.

  The component (B) of the present invention is water, and the other components blended as necessary together with the component (A) are dissolved to provide the deodorant composition of the present invention in the form of an aqueous solution.

Furthermore, the deodorant composition for CIP cleaning of the present invention contains 0.09 to 10.0% by weight of an antifoaming agent as the component (C).
Examples of the antifoaming agent of the present invention include polyoxyalkylene alkyl ethers (for example, Adecanol B series manufactured by Asahi Denka Kogyo Co., Ltd.); polyether type / mineral oil / silicon Polyoxyalkylene alkyl ether (for example, Adecanol LG series and PA series manufactured by Asahi Denka Kogyo Co., Ltd.); polyoxyalkylene glycol antifoaming agent; monool block type Antifoaming agents of aliphatic alcohol alkoxylates (for example, Plurafac LF series manufactured by BASF); Polyoxyalkylene alkyl ethers (for example, Sanyo) as special non-ionic surfactant-based antifoaming agents Cedran series manufactured by Kasei Kogyo Co., Ltd.); polyoxyethylene nonylphenyl ether type or Polyoxyethylene derivatives based defoaming agent and the like. Two or more of these antifoaming agents may be used in combination.

(C) The preferable content in the case of containing an antifoamer of a component is 0.09 to 10.0 weight% with respect to the whole quantity of a deodorizer composition, Preferably it is 0.1 to 5.0 weight% The most preferable content is 0.5 to 3.0% by weight. When the component (C) is less than 0.09% by weight, a sufficient defoaming effect may not be obtained. Even if the content exceeds 10.0% by weight, a further defoaming effect is obtained. In addition, the deodorizing effect may be adversely affected.
Further, the antifoaming agent of component (C) preferably has an HLB of 7 or less.

  The deodorant composition for CIP cleaning of the present invention cleans the equipment by flowing a cleaning fluid without disassembling the equipment in manufacturing equipment such as foods, beverages and pharmaceuticals, and cleaning production equipment. By using so-called CIP cleaning, it is possible to sufficiently remove odors such as remaining flavors, and since no oxidizing agent is used, it is safe for manufacturing equipment. In particular, it is preferable to use CIP cleaning of production facilities in food factories and beverage product factories.

  The deodorant composition for CIP cleaning of the present invention is particularly excellent in deodorizing rubber or the like used for packing or the like in manufacturing equipment where odors and flavors tend to remain in food and beverage product manufacturing equipment. . Examples of such rubbers used in such facilities of food factories include NBR (nitrile rubber), EPDM (ethylene propylene rubber), silicone rubber, FKM (fluoro rubber) and the like. In particular, the product of the present invention has an excellent effect on cleaning of EPDM and NBR in which odor is likely to remain.

  Examples of beverage products manufactured in a beverage product factory using the CIP cleaning deodorant composition of the present invention include fruit juice beverages such as orange, apple and grape, carbonated beverages such as cola and cider, and sake. And alcoholic beverages such as whiskey, beer, shochu and cocktail, tea beverages such as green tea, black tea and oolong tea, vegetable juice, sports beverages, near water, health beverages, nutrient beverages, and soft drinks. By using the deodorant composition of the present invention in CIP cleaning, it is excellent in removing and cleaning the odors and scents of these products themselves or the odors and scents of fragrances contained therein. .

  The deodorant composition of the present invention is used in CIP cleaning. In the CIP cleaning method of the present invention, a cleaning process using an alkaline cleaning agent mainly containing an aqueous solution of sodium hydroxide, potassium hydroxide, etc., and a cleaning using an acidic cleaning agent mainly containing an aqueous solution of nitric acid, phosphoric acid, sulfamic acid, etc. And a deodorizing and cleaning step using the deodorant composition of the present invention. In the CIP cleaning method of the present invention, a deodorization cleaning process using the deodorizing composition of the present invention is performed between the cleaning process using an alkali cleaning agent and the cleaning process using an acid cleaning agent.

  An example of a CIP cleaning method using the deodorant composition for CIP cleaning of the present invention is as follows. First, pre-rinsing with room temperature water or warm water (about 90 ° C. or less) is performed for about 10 minutes. Then, as an alkali cleaning step, an alkaline cleaning agent (for example, Adeka Cycle NZ manufactured by Adeka Clean Aid, etc.) is used in an aqueous solution having a concentration of 2.0% by weight at a cleaning temperature of about 90 ° C. or less for about 20 minutes. The deodorizing cleaning is performed at a cleaning temperature of about 90 ° C. or less for about 20 minutes with the CIP cleaning deodorant composition of the present invention with an intermediate rinse for about 10 minutes. In addition, with an intermediate rinse for about 10 minutes, the acid cleaning step is followed by an acid cleaning agent (for example, Adeka Clean Aid Co., Ltd., Adeka 3 etc.) with a 1.5 wt% aqueous solution, and a cleaning temperature of about 90 ° C. The following is performed for about 20 minutes. Then, after intermediate rinsing for about 10 minutes, the sterilization process is performed using hot water at a washing temperature of 90 ° C. or more for about 20 minutes.

  Examples of alkaline detergents include alkaline detergents based on sodium hydroxide or potassium hydroxide, surfactants and chelating agents, and commercially available ones include Adeka Cycle NZ, Adeka Cycle V7, Adeka Cycle. NP (both manufactured by Adeka Clean Aid) and the like can be mentioned. Examples of acid detergents include phosphoric acid and a surfactant as main components, for example, commercially available products such as Adeka US and Adeka 3 (both manufactured by Adeka Clean Aid), and nitric acid and surfactant. Examples of commercially available products include Adeka N100 (manufactured by Adeka Clean Aid Co., Ltd.).

  By using the deodorant composition of the present invention in the CIP cleaning method, that is, without decomposing the manufacturing equipment, production equipment, etc., the cleaning liquid is circulated here to perform cleaning / deodorization, thereby manufacturing equipment. The odor adhering to the production facility can be efficiently removed.

  The deodorant composition for CIP cleaning of the present invention can be blended with other optional components as long as the effects of the present invention are not impaired. Examples of other components include anionic surfactants, cationic surfactants, other nonionic surfactants, amphoteric surfactants, chlorine agents, solvents, enzymes, and lecithin (phosphatidylcholine) derivatives.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited by these. In the examples, “%” and “parts” are respectively “% by weight” and “parts by weight” unless otherwise specified.

Examples 1-14:
Deodorant compositions 1 to 14 of the present invention were prepared at the blending ratios and conditions shown in Table 1 or Table 2. About these deodorant compositions 1-14, the following method performed the deodorization test, the corrosiveness test, and the foaming property test, and evaluated these deodorizer compositions. Furthermore, the deodorizer of the oxidizing agent system composition described in Table 3 was prepared, and it evaluated similarly as the comparative products 1-3.
Inventive products 1 to 8 and 12 are reference products.

( I) Deodorization test :
(1) Preparation of test specimen:
DUT: EPDM packing (a square with a side of 5.0 cm, thickness 5 mm)
NBR packing (5.0cm square, 5mm thickness)
Beverage used: Orange beverage, apple beverage Any of the above packings was fully immersed in the beverage used and allowed to stand at 100 ° C. for 8 hours.

(2) Test method:
Table 1 or Table 2 deodorant composition of the present invention or comparative product deodorant composition of Table 3 was placed in a 300 mL beaker, and then the test specimen was aromatized by the above method. Was put into each beaker and immersed at 75 ° C. for 30 minutes. The subsequent packing was sufficiently rinsed with water, and the dried one was used as a sample for evaluation.

(3) Evaluation method:
Five panel evaluations were performed on the odor of the packing of the specimen by 10 panelists. It can be said that the smaller the score, the better the deodorizing effect. The average value of the evaluation points by 10 panelists was evaluated as “odor residual degree”. Judgment criteria are as follows.
Evaluation criteria 5 The beverage smells strongly.
4 The beverage smells quite a bit.
3 Slightly smells of beverage.
2 The beverage smells faintly.
1 There is no smell of beverage.

(Ii) Corrosion test :
(1) Preparation of DUT EPDM packing (50 mm x 25 mm x 5 mm thick rectangle)
(2) Test method After putting 200 mL of each deodorant composition of Table 1 or Table 2 or the comparative product of Table 3 into a 300 mL beaker, the above test piece packing is put into each beaker. And soaked at 25 ° C. for 1 week.
(3) Evaluation method After one week, the packing of the test specimen was taken out, washed with water, air-dried, visually observed on the surface of the packing, and evaluated according to the following criteria.
Evaluation criteria ○: The surface of the park was glossy, and there was no change.
X: The gloss of the surface of the park disappears and it is considered that it has been corroded.

(Iii) Foamability test :
(1) Test method: Each deodorant composition was foamed at 60 ° C. by the Ross-Miles method, and the foam height at the start of measurement and after 5 minutes was measured.
(2) Evaluation method: The foam height at the start of measurement was compared with the foam height after 5 minutes, and the reduction rate of the foam height after 5 minutes relative to the foam height at the start of measurement was evaluated according to the following criteria. When it decreases by 10% or more, it can be said to have low foaming properties.
○: Reduced by 10% or more and low foaming property.
(Triangle | delta): It reduces 5-10% and is a little low-foaming property.
X: It is a reduction of 5% or less and is not low-foaming.
These evaluation results are shown in Tables 1 to 3.

* 1: Polyoxyethylene sorbitan trioleate (Sorbon T85 manufactured by Toho Chemical Industry Co., Ltd.)
* 2: Polyoxyethylene tetraoleate (30E.O.) (Sorbon TR-843 manufactured by Toho Chemical Industry Co., Ltd.)
* 3: Polyoxyethylene sorbitan monolaurate (Reodol TW-L120 manufactured by Kao Corporation)
* 4: Aliphatic alcohol alkoxylate (Plurafac LF231 manufactured by BASF)
* 5: Special engineered non-ionic surfactant type antifoaming agent (Sedran FF200 manufactured by Sanyo Chemical Industries, Ltd.)

Examples 15-27:
The deodorant compositions 15 to 27 of the present invention were prepared with the compositions shown in Table 4, and the deodorizing test was performed on the packings of the test objects perfumed with various beverage products shown in Table 5. The deodorization test method was performed by the same method as Examples 1-14. These results are shown in Table 5.

* 6: Polyoxyethylene alkyl ether taroate (Adeka Estor TL-162, manufactured by Asahi Denka Kogyo Co., Ltd.)
* 7: Polyoxyethylene-polyoxypropylene block polymer (reverse type) (Adeka Pluronic 17R-2, manufactured by Asahi Denka Kogyo Co., Ltd.)
* 8: Polyoxyethylene-polyoxypropylene block polymer (Adeka Pluronic P-85, manufactured by Asahi Denka Kogyo Co., Ltd.)
* 9: Aliphatic alcohol alkoxylate (Plurafac LF231, manufactured by BASF)
* 10: Polyoxyalkylene alkyl ether (Cedran FF200, manufactured by Sanyo Chemical Industries, Ltd.)
* 11: Polyoxyethylene nonyl phenyl ether (Emulgen 903, manufactured by Kao Corporation)

Example 28
Using the deodorant composition for CIP having the composition of the product 9 of the present invention in Table 1 as the deodorant composition in the deodorization washing process, the orange beverage production facility is washed with a spray ball of the tank, and the following abcdefgh order steps CIP cleaning was performed. After cleaning, the odor in the tank was evaluated according to the same evaluation criteria as in Example 1.
On the other hand, as a comparison, the same deodorant composition was used as the deodorant composition in the deodorizing and cleaning process, and the cleaning process was partially omitted or changed as follows. That is, as Comparative Example 4, the cleaning of only the abch alkali cleaning step is performed, as Comparative Example 5, the cleaning of only the afgh acid cleaning step is performed, and as Comparative Example 6, the alkaline cleaning step and the acid cleaning step are performed in the order of abcgh As Comparative Example 7, the cleaning was performed by an acid cleaning step and an alkali cleaning step in the order of afgbch .

<CIP cleaning process>
a. After the orange beverage is manufactured, first, pre-rinsing is performed with room temperature water for 10 minutes.
b. The alkali cleaning step is performed with an aqueous solution having an alkali cleaning solution (Adeka Cycle NZ manufactured by Adeka Clean Aid Co., Ltd.) having a concentration of 2.0% by weight at a temperature of 75 ° C. for 20 minutes.
c. An intermediate rinsing step with room temperature water is performed for 10 minutes.
d. The deodorizing and cleaning step is performed with the above deodorant composition at a temperature of 75 ° C. for 20 minutes.
e. An intermediate rinsing step with room temperature water is performed for 10 minutes.
f. The acid cleaning step is performed with an acid cleaning solution (Adeka 3 manufactured by Adeka Clean Aid Co., Ltd.) in an aqueous solution having a concentration of 1.5% by weight at a temperature of 75 ° C. for 20 minutes.
g. An intermediate rinsing step with room temperature water is performed for 10 minutes.
h. The sterilization process is performed using hot water at a washing temperature of 90 ° C. or higher for 20 minutes.
Table 6 shows the odor evaluation results after the CIP cleaning.

Claims (4)

  (I) After the cleaning step with the alkaline cleaner, (ii) after performing the deodorizing and cleaning step with the deodorant composition for CIP cleaning, and further (iii) performing the cleaning step with the acid cleaner. The deodorant composition for CIP cleaning is a polyoxyalkylene fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, sorbitan fatty acid ester, polyoxyalkylene sorbite fatty acid ester, polyoxyalkylene sorbitol fatty acid as component (A) Ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyalkylene glycerin fatty acid ester, polyoxyethylene-polyoxypropylene block polymer, reverse type polyoxyethylene-polyoxypropylene block polymer, Group consisting of reethylene glycol fatty acid ester, propylene glycol fatty acid ester, polyoxyalkylene alkyl ether, sucrose fatty acid ester, ethylenediamine type polyoxyethylene-polyoxypropylene block polymer, reverse type ethylenediamine type polyoxyethylene-polyoxypropylene block polymer One to one or more nonionic surfactants selected from: 0.01 to 30.0% by weight, water as component (B), and 0.09 to 10.0% by weight of defoamer as component (C) A CIP cleaning method comprising:   The CIP cleaning method according to claim 1, wherein the nonionic surfactant of the component (A) is HLB 8-18.   The CIP cleaning method according to claim 1 or 2, wherein the antifoaming agent of the component (C) is HLB7 or less.   The CIP cleaning method according to claim 1, wherein the object to be cleaned is a beverage manufacturing facility.