JP6945281B2 - Detergent composition for aeration-type foreign matter removal and cleaning of vegetables and foreign matter removal and cleaning method for vegetables - Google Patents

Description

The present invention relates to a detergent composition for removing and cleaning foreign substances in vegetables.

In recent years, there are pre-cut vegetables and fruits that are cut to the size of eating and are stored in containers and sold (hereinafter, vegetables and fruits are collectively referred to as vegetables, and pre-cut vegetables are sometimes referred to as cut vegetables). ..
Examples of the method for producing cut vegetables include the following methods. First, the vegetables in the whole state are washed with running water (primary washing), and then the vegetables in the whole state or in half are immersed in the washing liquid to remove foreign substances such as insects (secondary washing), and then the vegetables. Examples thereof include a method in which the vegetables are cut to a size to be eaten and the surface of the cut vegetables is washed (sterilized and washed) with a fungicide or the like. Of these, in the secondary cleaning (foreign matter removal cleaning step), a method is proposed in which foreign substances are floated and separated by aerating the cleaning liquid in which vegetables are immersed (air or the like is blown into the cleaning water in the cleaning tank). (For example, Patent Document 1).

In the secondary cleaning, a detergent composition containing a surfactant may be used in order to enhance the wettability of vegetables and enhance the removing power (cleaning power) of foreign substances. When the detergent composition is used in the secondary cleaning, the wettability of the vegetable surface is enhanced, and the foreign matter adhering to the surface is easily peeled off. The peeled foreign matter floats together with the bubbles generated by the surfactant. By removing the generated bubbles from the washing tank by air flow or the like, foreign matter is discharged from the washing tank and prevention of foreign matter from reattaching to vegetables is prevented.

Japanese Unexamined Patent Publication No. 2012-34638

By the way, in the secondary washing, physical force is given to the vegetables by aeration in order to remove foreign substances adhering to the vegetables. In recent years, in order to further improve the cleaning power, there is a tendency to enhance the aeration function of the cleaning device (increase the amount of air or the like blown per unit time).
However, when vegetables are washed with a conventional cleaning agent composition using a washing device having an enhanced aeration function, the amount of foam increases significantly, and the amount of foam overflowing from the washing tank increases. In addition, since the bubbles generated by washing vegetables are hard to disappear, there is a problem that a large amount of bubbles overflowing from the washing tank stays on the floor surface of the work place for a long time.
On the other hand, if the foaming power of the detergent composition is simply lowered (that is, the foam is prevented from being generated), the foreign matter cannot be removed together with the foam, which causes a problem of reattachment of the foreign matter to vegetables. There is.
Therefore, the detergent composition used in the cleaning step of removing foreign substances from vegetables by aeration is required to be appropriately foamed and the generated bubbles to be easily eliminated (defoaming property).
Therefore, an object of the present invention is a detergent composition for removing foreign substances from vegetables, which has good detergency, moderately foams, and is excellent in defoaming property.

As a result of diligent studies to solve the above problems, the present inventors have found that even when vegetables are washed using a washing device having a high aeration function, a specific nonionic surfactant produces appropriate bubbles. Obtained. In addition, the present inventors said that the vegetable juice that exudes from the cut edges of vegetables during washing promotes the generation of bubbles, making defoaming more difficult, and that specific fatty acids (salts) are used for defoaming. We have found that it is specifically effective to use it in combination with the specific nonionic surfactant, and solved the above problems to complete the present invention.
That is, the present invention has the following aspects.
[1] Vegetables containing a nonionic surfactant (A) represented by the following formula (a) and one or more fatty acids (salts) (B) selected from fatty acids having 8 to 24 carbon atoms and salts thereof. Detergent composition for removing foreign substances of the same kind.
RO-[(EO) _x / (AO) _y ] -H ... (a)
[In the formula (a), R is a linear or branched alkyl group having 8 to 24 carbon atoms, a linear or branched alkylene group having 8 to 24 carbon atoms, or an alkylaryl group having 8 to 24 carbon atoms. Is. EO represents an oxyethylene group, and x is a number of 1 to 30 representing the average number of repetitions of EO. AO represents an oxyalkylene group having 3 to 4 carbon atoms, and y is a number of 1 to 20 representing the average number of repetitions of AO. [(EO) _x / (AO) _y ] indicates that EO and AO may be block-polymerized or randomly polymerized, and the order of EO and AO does not matter. ]
[2] The vegetable according to [1], _{wherein [(EO) x} / (AO) _y ] in the above formula (a) is a block polymerization of (EO) _x and (AO) _{y in this order.} Detergent composition for removing foreign substances of the same kind.
[3] The cleaning agent for removing foreign substances from vegetables according to [1] or [2], wherein the mass ratio represented by the component (A) / the component (B) is 0.1 to 40. Composition.
[4] Further, one or more solvents selected from monohydric alcohols having 2 to 4 carbon atoms, polyhydric alcohols having 2 to 12 carbon atoms, glyceryl ethers having 4 to 12 carbon atoms and glycol ethers having 3 to 12 carbon atoms. The cleaning composition for removing foreign substances from vegetables according to any one of [1] to [3], which contains (C).
[5] The content of the component (A) in 100% by mass of the detergent composition for removing foreign substances from vegetables is 0.1 to 20% by mass, according to any one of [1] to [4]. The detergent composition for removing foreign matter of the vegetable described.
[6] The content of the component (B) in 100% by mass of the detergent composition for removing foreign substances from vegetables is 0.01 to 10% by mass, according to any one of [1] to [5]. The detergent composition for removing foreign matter of the vegetable described.
[7] The content of the component (C) in 100% by mass of the detergent composition for removing and cleaning foreign substances in vegetables is 0.1 to 30% by mass, according to any one of [1] to [6]. The detergent composition for removing foreign matter of the vegetable described.

[8] A method for removing foreign substances from vegetables, wherein a cleaning solution containing the cleaning agent composition for removing foreign substances from vegetables according to any one of [1] to [7] is brought into contact with the vegetables.
[9] The method for removing foreign substances from vegetables according to [8], wherein the cleaning liquid containing the vegetables is aerated to remove foreign substances from the vegetables.

According to the cleaning agent composition for removing and cleaning foreign substances of vegetables of the present invention, it has good detergency, moderately foams, and is excellent in defoaming property.

It is a schematic diagram which shows an example of the cleaning apparatus used in the foreign matter removal cleaning method of vegetables of this invention.

(Cleaning agent composition for removing foreign substances from vegetables)
The detergent composition for removing foreign substances from vegetables of the present invention (hereinafter, may be simply referred to as a detergent composition) contains components (A) to (B).
The dosage form of the detergent composition of the present invention may be liquid or solid.
The liquid detergent composition (liquid detergent) may be a one-component type in which both the components (A) to (B) are mixed in the dispersion medium, or the first liquid agent containing the component (A) and (B). It may be a two-component type composed of a second liquid agent containing an ingredient.
Examples of the solid detergent composition (solid detergent) include powder and tablet.
Alternatively, the detergent composition may be a combination of a first liquid agent containing the component (A) and a second solid agent containing the component (B).
Since it is easy to use, the dosage form is preferably a one-component solution.

<Ingredient (A)>
The component (A) is a nonionic surfactant represented by the following formula (a).
RO-[(EO) _x / (AO) _y ] -H ... (a)
[In the formula (a), R is a linear or branched alkyl group having 8 to 24 carbon atoms, a linear or branched alkylene group having 8 to 24 carbon atoms, or an alkylaryl group having 8 to 24 carbon atoms. Is. EO represents an oxyethylene group, and x is a number of 1 to 30 representing the average number of repetitions of EO. AO represents an oxyalkylene group having 3 to 4 carbon atoms, and y is a number of 1 to 20 representing the average number of repetitions of AO. [(EO) _x / (AO) _y ] indicates that EO and AO may be block-polymerized or randomly polymerized, and the order of EO and AO does not matter. ]

In the formula (a), R is a linear or branched alkyl group, a linear or branched alkylene group or an alkylaryl group. Of these, R is preferably a linear or branched alkyl group.

The carbon number of R is 8 to 24, preferably 8 to 18, and more preferably 9 to 12. When the number of carbon atoms is within the above range, the detergent composition exhibits good detergency and moderately foams.

In the formula (a), EO represents an oxyethylene group, and x represents the average number of repetitions of EO (that is, the average number of moles of ethylene oxide added).
In the formula (a), x is a number of 1 to 30, preferably 5 to 15, and more preferably 6 to 10. When x is within the above range, the detergent composition exhibits good detergency and moderately foams.

In the formula (a), AO represents an oxyalkylene group having 3 to 4 carbon atoms (that is, an oxypropylene group or an oxybutylene group), and y is the average number of repetitions of AO (that is, the average number of moles of alkylene oxide added). Represents.
In the formula (a), y is a number of 1 to 20, and when AO is an oxypropylene group (PO), 2 to 10 is preferable, and 3 to 9 is more preferable. When AO is an oxybutylene group (BO), 1 to 5 is preferable, and 1 to 2 is more preferable. When y is at least the above lower limit value, foaming is more appropriate, and when y is at least the above upper limit value, the biodegradability is excellent. In addition, (AO) _y may be a mixture of PO and BO. Further, it is more preferable to include BO in order to obtain appropriate foaming.

The EO and AO in [(EO) _x / (AO) _y ] in the formula (a) may be block-polymerized or randomly polymerized. Moreover, the order of EO and AO does not matter. For [(EO) _x / (AO) _y ], it is preferable that (EO) _x and (AO) _y are block-polymerized in this order. That is, [(EO) _x / (AO) _y ] is preferably − (EO) _x − (AO) _y −. By such block polymerization, the detergent composition foams more appropriately.
These components (A) may be used alone or in combination of two or more.

The content of the component (A) with respect to 100% by mass of the detergent composition is preferably 0.1 to 20% by mass, more preferably 0.5 to 10% by mass, and 1 to 5% by mass in the case of a liquid detergent. Is even more preferable. Within the above preferable range, when the dosage form of the detergent composition is liquid, the detergent composition tends to be uniformly transparent without causing separation or the like.

<Ingredient (B)>
The component (B) is one or more fatty acids (salts) selected from fatty acids having 8 to 24 carbon atoms and salts thereof. The detergent composition can exhibit excellent defoaming property by containing the component (B).

The carbon number of the component (B) is 8 to 24, preferably 8 to 16. If it is within the above range, the defoaming property can be further improved.

The component (B) is represented by the following formula (b).
R ¹ COOX ... (b)
[In equation (b), R ¹ is a hydrocarbon group having 7 to 23 carbon atoms. X is a hydrogen atom or a counterion. ]

In the formula (b), R ¹ may be a saturated hydrocarbon group or an unsaturated hydrocarbon group, and a saturated hydrocarbon group is preferable. If it is a saturated hydrocarbon group, the detergent composition can exhibit more excellent defoaming property.
R ¹ may be a straight chain or a branched chain.
The carbon number of R ¹ is 7 to 23, preferably 7 to 15. If it is within the above range, the defoaming property can be further improved.
X is hydrogen or a counterion. Examples of the counterion include alkali metal ions such as sodium ion and potassium ion; cations derived from triethanolamine, and the like, among which alkali metal ions are preferable, and potassium ions are preferable.
As the component (B), lauric acid, myristic acid, coconut-derived fatty acid or potassium salt thereof is preferable.
These components (B) may be used alone or in combination of two or more.

The content of the component (B) with respect to 100% by mass of the detergent composition is preferably 0.01 to 10% by mass, more preferably 0.1 to 5% by mass, and 0.1 to 3 in the case of a liquid detergent. Mass% is more preferred. Within the above preferable range, when the dosage form of the detergent composition is liquid, the detergent composition tends to be uniformly transparent without causing separation or the like.

The mass ratio (A / B ratio) represented by the component (A) / component (B) is preferably 0.1 to 40, more preferably 1 to 20. When the A / B ratio is at least the above lower limit value, appropriate foaming is likely to be obtained, and when it is at least the above upper limit value, the defoaming property is better.

<Ingredient (C)>
The detergent composition may contain a solvent (C) (hereinafter, component (C)). By containing the component (C), when the cleaning agent composition is made into a liquid composition, the components (A) to (B) are well dispersed in the dispersion medium, and precipitation and separation are unlikely to occur (that is,). , Excellent liquid stability).

The component (C) is one or more selected from monohydric alcohols having 2 to 4 carbon atoms, polyhydric alcohols having 2 to 12 carbon atoms, glyceryl ethers having 4 to 12 carbon atoms, and glycol ethers having 3 to 12 carbon atoms. It is a solvent.
Examples of monohydric alcohols having 2 to 4 carbon atoms include ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, tertiary butanol and the like.
Polyhydric alcohols having 2 to 12 carbon atoms include ethylene glycol, propylene glycol, butylene glycol, glycerin, isopropylene glycol, 2,2,4-trimethyl-1,3-pentanediol, 1,8-octanediol, and 1 , 9-Nonanediol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol and the like.
Examples of the glyceryl ether having 4 to 12 carbon atoms include hexyl glyceryl ether, methyl glyceryl ether, ethyl glyceryl ether, propyl glyceryl ether, butyl glyceryl ether, pentyl glyceryl ether, heptyl glyceryl ether, octyl glyceryl ether, 2-ethylhexyl glyceryl ether and the like. Can be mentioned.
Glycol ethers having 3 to 12 carbon atoms include ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, diethylene glycol monoethyl ether, and diethylene glycol monopropyl ether. Examples thereof include ether, triethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, phenylcarbitol, phenylcellosolve, and benzylcarbitol.
As the component (C), a monohydric alcohol having 2 to 4 carbon atoms and a glycol ether having 3 to 12 carbon atoms are preferable, a glycol ether having 3 to 12 carbon atoms is more preferable, and diethylene glycol monobutyl ether is further preferable.
These (C) components may be used alone or in combination of two or more.

The content of the component (C) with respect to 100% by mass of the detergent composition is preferably 30% by mass or less, more preferably 1 to 25% by mass, still more preferably 3 to 20% by mass in the case of a liquid detergent. When the content of the component (C) is in the above-mentioned preferable range, the liquid stability can be further improved.

<Arbitrary ingredient>
The detergent composition may contain arbitrary components other than the components (A) to (C) as long as the effects of the present invention are not impaired.
Examples of the optional component include water, a surfactant (arbitrary surfactant) other than the components (A) to (B), a pH adjuster, a preservative, and the like.

When the detergent composition is a one-component liquid detergent, the content of water with respect to 100% by mass of the detergent composition is preferably 50 to 99% by mass, more preferably 60 to 99% by mass, and 65 to 95% by mass. % Is more preferable. When it is at least the above lower limit value, the components (A) to (B) are easily dispersed in water. When it is not more than the above upper limit value, the content of the components (A) to (B) in the detergent composition is not excessively reduced, so that the amount of the detergent composition used is not excessive and the usability is good.

Examples of the optional surfactant include nonionic surfactants other than the component (A), anionic surfactants other than the component (B), cationic surfactants, amphoteric surfactants, semipolar surfactants and the like.

Examples of the pH adjuster include organic substances such as citric acid and alkanolamine, and inorganic substances such as hydrochloric acid and sodium hydroxide. The content of the pH adjuster with respect to 100% by mass of the detergent composition is not particularly limited, and is, for example, 0.1 to 5% by mass.

Examples of the preservative include benzoic acid and the like. The content of the preservative with respect to 100% by mass of the cleaning agent composition is not particularly limited, and is, for example, 0.1 to 10% by mass.

In the detergent composition, the total of the components (A) to (C) and the optional components does not exceed 100% by mass.

When the detergent composition is a one-component liquid detergent, pH 5 to 9 is preferable, and pH 6 to 8 is more preferable. When the pH is within the above range, deterioration of the quality of vegetables to be washed can be satisfactorily prevented.
The pH of the liquid detergent is a value measured by using a pH meter (manufactured by DKK-TOA CORPORATION, product name: HM-30G), placing an electrode in a sample at 25 ° C., and reading the value 2 minutes later. ..

(Production method)
The detergent composition is produced according to a conventionally known production method according to the dosage form.
Examples of the method for producing a one-component liquid detergent include a method of dispersing the components (A) to (B) and, if necessary, the component (C) or an arbitrary component in water as a dispersion medium.

(how to use)
Next, a method of using the cleaning agent composition for removing and cleaning foreign substances of vegetables of the present invention (that is, a method of removing and cleaning foreign substances of vegetables) will be described.
The foreign matter-removing cleaning method for vegetables of the present invention is a cleaning method in which a cleaning liquid is brought into contact with vegetables to be washed. The cleaning liquid contains the cleaning agent composition of the present invention.
In this paper, "foreign matter removal cleaning" refers to a cleaning process that mainly removes foreign matter adhering to the object to be washed.

An example of the cleaning method will be described with reference to FIG. FIG. 1 is a schematic view of a cleaning device used in the cleaning method of the present embodiment.
The cleaning device 1 of FIG. 1 includes a cleaning tank 10 having an open upper end, a bubble generator 20, and a water supply pipe 30.
The cleaning tank 10 is provided with an air nozzle 12 at the upper end.
The bubble generator 20 includes an air diffuser 22, a pump 24, and a pipe 26 that connects the air diffuser 22 and the pump 24. The air diffuser 22 is provided near the bottom of the cleaning tank 10.
One end of the water supply pipe 30 is located in the washing tank 10, and the other end is connected to a water supply source (not shown).

Examples of the cleaning tank 10 include a metal tank such as stainless steel and aluminum, and a plastic tank such as polyethylene. The size of the washing tank 10 is appropriately determined in consideration of the size of the object to be washed, the treatment, and the like.
Examples of the air diffuser 22 include an air diffuser or a diffuser having a hole having a diameter of 1 to 10 mm, a diffuser, an ejector, and the like.

Next, a cleaning method using the cleaning device 1 will be described.
Water is supplied from the water supply pipe 30 to the washing tank 10. The detergent composition of the present invention is added to the water in the cleaning tank 10 to prepare a cleaning liquid 50.
The content of the detergent composition in the cleaning liquid 50 is, for example, 100 to 10,000 pppm (mass basis).
The content of the component (A) in the cleaning liquid 50 is preferably 1 to 1000 ppm, more preferably 1 to 200 ppm.
The content of the component (B) in the cleaning liquid 50 is preferably 0.1 to 1000 ppm, more preferably 0.1 to 100 ppm.
The cleaning liquid 50 is preferably, for example, pH 5-9, more preferably pH 6-8. When the pH is within the above range, deterioration of the quality of vegetables to be washed can be satisfactorily prevented.

The object to be washed (vegetables) 40 is put into the cleaning liquid 50. The object to be washed 40 is not particularly limited as long as it is a vegetable. The vegetables to be washed may be, for example, whole vegetables, half-split vegetables, or cut vegetables cut to the size of an eating habit.
While supplying water from the water supply pipe 30 to the washing tank 10, the pump 24 is started to generate air bubbles 52 from the air diffuser 22. At this time, even if the opening diameter of the holes formed in the air diffuser 22 is 1 to 10 mm, since the cleaning liquid 50 contains the cleaning agent composition, the bubbles 52 generated from the air diffuser 22 have a bubble diameter of 10. It may be miniaturized to ~ 200 μm to form so-called microbubbles.
The generated air bubbles 52 rise in the cleaning liquid 50 and peel off the foreign matter adhering to the surface of the object to be washed 40. In addition, bubbles are generated on the upper surface of the cleaning liquid 50. The foreign matter peeled off from the object to be washed 40 stays on the upper surface of the cleaning liquid 50 together with the bubbles generated on the upper surface of the cleaning liquid 50.
Here, the air 14 is blown from the air nozzle 12 onto the upper surface of the cleaning liquid 50, and the foreign matter existing on the upper surface of the cleaning liquid 50 is discharged to the outside of the cleaning tank 10 together with the bubbles.
At this time, since the foam discharged to the outside of the cleaning tank 10 contains the cleaning agent composition, the foam is quickly extinguished by rinsing with tap water. Therefore, the bubbles do not stay in the container, the floor surface, etc., which is the discharge destination of the bubbles, for a long time.

The temperature of the cleaning liquid 50 is determined in consideration of the quality of the object to be washed 40, and is, for example, 5 to 40 ° C.
The residence time (that is, washing time) of the object to be washed 40 in the washing tank 10 is not particularly limited, and is, for example, 15 to 300 seconds.

After an arbitrary cleaning time has elapsed, the object to be washed 40 is taken out from the cleaning liquid 50. If necessary, the taken-out object to be washed 40 may be cut into an arbitrary size, or may be sterilized by contacting it with water containing a bactericidal agent (hypochlorous acid, ozone, etc.).

In the cleaning method of the present invention, the object to be washed 40 may be cleaned in advance. For example, the object to be washed 40 may be one that has undergone primary cleaning to remove mud and the like adhering to the outer surface by running water.
Further, the cleaning tank of the present embodiment described above includes an air nozzle, but the present invention is not limited thereto. The cleaning tank does not have an air nozzle, and bubbles and foreign matter may be removed from the upper surface of the cleaning liquid by overflow. Alternatively, bubbles and foreign matter may be removed from the upper surface of the cleaning liquid with a squeegee or the like.

As described above, according to the cleaning agent composition of the present invention, since the component (A) is contained, it foams appropriately, the wettability of the surface of the object to be washed is enhanced, and the foreign matter can be easily peeled off from the object to be washed. In addition, since the detergent composition contains the component (B), the defoaming property can be enhanced.

Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to the following description.

(Raw materials used)
<Component (A): Nonionic surfactant represented by formula (a)>
A-1: In the formula (a), R is a linear alkyl group having 13 carbon atoms, AO is an oxypropylene group, x = 7, y = 3, and a nonionic surfactant in which EO and AO are randomly polymerized. The one synthesized in the following synthesis example 1.
<< Synthesis Example 1 >> Method for synthesizing A-1 component In a 4 L autoclave, 732.14 g of tridecanol and 1.25 g of a potassium hydroxide catalyst were charged, the inside of the autoclave was replaced with nitrogen, and the temperature was raised to 100 ° C. with stirring. And dehydrated for 30 minutes. Then, the temperature was raised to 140 ° C., a mixture of 1129.87 g of ethylene oxide and 637.60 g of propylene oxide was introduced at a pressure of 0.25 MPa or less, and aging was carried out until the pressure became constant after the introduction. The reaction product was cooled to 50 ° C. and then neutralized with acetic acid to obtain random adducts having an average adduct of ethylene oxide of 7 and an average adduct of propylene oxide of 3.

A-2: In the formula (a), _{it is represented by R- (EO) x-} (AO) _y- H, where R is a linear alkyl group having 13 carbon atoms, AO is an oxypropylene group, x = 7, y =. Nonion surfactant which is 3. The one synthesized in the following synthesis example 2.
<< Synthesis Example 2 >> Method for synthesizing A-2 component In a 4 L autoclave, 732.14 g of tridecanol and 1.25 g of potassium hydroxide catalyst were charged, the inside of the autoclave was replaced with nitrogen, and the temperature was raised to 100 ° C. with stirring. And dehydrated for 30 minutes. Then, the temperature was raised to 140 ° C., 1129.87 g of ethylene oxide was introduced at a pressure of 0.25 MPa or less, and aging was carried out for 30 minutes after the introduction. Then, the reaction product was cooled to 125 ° C., a mixture of 637.60 g of propylene oxide was introduced at a pressure of 0.25 MPa or less, and after the introduction, aging was carried out until the pressure became constant. The reaction product was cooled to 50 ° C. and then neutralized with acetic acid to obtain a block adduct having an average adduct of ethylene oxide of 7 and an average adduct of propylene oxide of 3.

A-3: In the formula (a), _{it is represented by R- (EO) x-} (AO) _y- H, where R is a linear alkyl group having 10 carbon atoms, AO is an oxybutylene group, x = 8, y =. Nonion surfactant which is 1. The one synthesized in the following synthesis example 3.
<< Synthesis Example 3 >> Method for synthesizing A-3 component 675.53 g of decanol and 1.25 g of potassium hydroxide catalyst were charged in a 4 L autoclave, the inside of the autoclave was replaced with nitrogen, and the temperature was raised to 100 ° C. with stirring. And dehydrated for 30 minutes. Then, the temperature was raised to 140 ° C., 1508.18 g of ethylene oxide was introduced at a pressure of 0.25 MPa or less, and aging was carried out for 30 minutes after the introduction. Then, the reaction product was cooled to 125 ° C., and 313.08 g of butylene oxide was introduced at a pressure of 0.25 MPa or less, and after the introduction, aging was carried out until the pressure became constant. The reaction product was cooled to 50 ° C. and then neutralized with acetic acid to obtain a block adduct having an average addition mole number of ethylene oxide of 8 and an average addition mole number of butylene oxide of 1.

A-4: Nonionic surfactant represented by _{R- (EO) x-} (AO) _y-H. Block-polymerized with an average addition mole number of ethylene oxide of 7 and an average addition mole number of 8.5 of propylene oxide to a secondary alcohol having 12 to 14 carbon atoms (trade name "Softanol EP7085", Nippon Catalytic Chemical Industry Co., Ltd.) Made).
A-5: Nonionic surfactant represented by _{R- (EO) x-} (AO) _y-H. Block-polymerized with an average addition mole number of ethylene oxide of 12 and an average addition mole number of 3 of propylene oxide with a secondary alcohol having 12 to 14 carbon atoms (trade name "Softanol EP12030", manufactured by Nippon Catalytic Chemical Industry Co., Ltd.). ..
A'-1: A nonionic surfactant having a branched alkyl group having 12 to 14 carbon atoms, x = 7, and Y = 0 in the formula (a). Ethylene oxide is added to a branched alcohol having 12 to 14 carbon atoms with an average number of moles of 7 (trade name "Leocol TD-70", manufactured by Lion Specialty Chemicals Co., Ltd.).

<Component (B): Fatty acid (salt) having 8 to 24 carbon atoms>
B-1: Potassium coconut fatty acid: A mixture of coconut oil-derived fatty acid salts containing a fatty acid salt having 12 to 14 carbon atoms as a main component.
B-2: Potassium myristate: A fatty acid salt having 14 carbon atoms.
B-3: Potassium palmitate: A fatty acid salt having 16 carbon atoms.

<(B') component: Comparison product of (B) component>
B'-1: Polyoxyethylene polyoxypropylene glycol (trade name "Epan 710", manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.).
B'-2: Polyoxyethylene sec-alcohol ether (trade name "Newcol NT-3", manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.).
B'-3: Glyceryl monocaprylate (trade name "Sunsoft No. 707-C", manufactured by Taiyo Kagaku Co., Ltd.).
B'-4: Branched hexadecanol (trade name "Isofol 16", manufactured by Sasol ltd).
B'-5: 2-Ethylhexyl-2-ethylhexanoate (trade name "Degressal SD30", manufactured by BASF).

<Ingredient (C)>
C-1: Diethylene glycol monobutyl ether.
C-2: Diethylene glycol monoethyl ether.
C-3: 2-ethylhexyl glyceryl ether.
C-4: Ethanol.
C-5: Glycerin.

<Arbitrary ingredient>
Acidity regulator: citric acid.
Acidity regulator: Potassium hydroxide (KOH).
Water: Ion-exchanged water.

(Evaluation method)
<Bubbling evaluation>
Connect the PVC pipes with a diameter of 2.5 cm and a length of 10 cm to the left and right pipes of the PVC joint TS cheese, then connect the pipes with a 90 ° elbow and a length of 33 cm, close the ends, and make a U-shaped pipe in a plan view. Was produced. That is, this U-shaped pipe in a plan view includes a main pipe extending in one direction and two sub pipes extending in the same direction from both ends of the main pipe, and the ends of the sub pipes are sealed. ing.
Next, a hole having a diameter of 3 mm was formed on the upper surface of the sub-pipe at a position 7 cm from the end of the sub-pipe, and five holes having a diameter of 3 mm were further formed at intervals of 3 cm from the holes to form an air diffuser. The number of holes was 6 in one sub-pipe (12 in total).
The above-mentioned air diffuser was installed at the bottom of a cleaning tank having a width of 40 cm, a depth of 25 cm, and a height of 28 cm, and a pump was connected to the air diffuser to form a cleaning device.

10 L of the following test solution (liquid height 10 cm) containing cabbage juice was put into the washing tank.
The test solution (particularly called cabbage juice test solution) is as follows.
-TOC (total organic carbon): 60-65 mg / L.
-Temperature: 5-10 ° C.
-Hardness: 3 ° DH (German hardness).
Next, a method for preparing the test solution will be described.
100 g of cabbage was cut into julienne. To the shredded cabbage, 1 L of water (3 ° DH) was added and this was stirred for 5 minutes. After stirring, the water containing cabbage was filtered to obtain cabbage juice. The obtained cabbage juice was diluted with water (3 ° DH) to prepare a cabbage juice test solution having a TOC of 60 to 65 mg / L. An online total organic carbon meter (manufactured by Shimadzu Corporation) was used for the measurement of TOC.

10 mL of the detergent composition of each example (detergent concentration 1000 ppm) was added to the cabbage juice test solution. An average of 200 L / min of air was sent from the pump to the air diffuser, and air was blown into the test solution (aeration). The height of the bubbles 1 minute after the start of aeration was measured.
When the foam height was 5 cm or more and less than 15 cm, the foaming was judged to be appropriate, and when the foam height was 5 cm or more and less than 12 cm, it was judged to be more appropriate.
When the foam height was 5 cm, it was judged that the foaming was insufficient, and when the foam height was 15 cm or more, it was judged that the foaming was excessive.

<Foam disappearance evaluation A>
Aeration was performed in the same manner as in the above-mentioned << Foaming evaluation >>, the aeration was stopped 5 minutes after the start of the aeration, and the foam height was measured 1 minute after the aeration was stopped. The measurement results are shown in the table.
When the foam height was less than 8 cm, it was judged that the defoaming property was good. Above all, it was judged that the defoaming property was better when the foam height was less than 4 cm.

<Foam disappearance evaluation B>
20 mL of water (3 ° dH) and 20 μL of the detergent composition of each example were placed in an Epton tube, and this was shaken with an Epton tube shaker (Model YS-8D, manufactured by Yayoi Co., Ltd.) for 1 minute. Then, the Epton tube was allowed to stand for 15 seconds, and the bubble height was measured.

<Foam disappearance evaluation C>
20 mL of the cabbage juice test solution and 20 μL of the detergent composition of each example were placed in an Epton tube, and this was shaken with an Epton tube shaker (Model YS-8D, manufactured by Yayoi Co., Ltd.) for 1 minute. Then, the Epton tube was allowed to stand for 15 seconds, and the bubble height was measured.

<Detergency evaluation>
Twenty to thirty diamondback moths (larvae) were attached to cabbage leaves and used as objects to be washed. A cylindrical bubbling device was filled with 300 mL of a cleaning solution having a solution temperature of 15 ° C. (an aqueous solution having a concentration of 1000 ppm of the cleaning agent composition), and the cabbage leaves were submerged in the cylindrical bubbling device. The bubbling device includes a vinyl chloride pipe having a diameter of 5 cm and a height of 20 cm, and an air pump. A nozzle having a diameter of 0.5 cm is provided at the bottom of the vinyl chloride pipe, and an air pump is connected to this nozzle.
10 L of air was blown into the cleaning liquid from the nozzle every minute, and aeration was performed for 1 minute. After the aeration was completed, the cabbage leaves were taken out, and the number of diamondback moth larvae remaining on the cabbage leaves was measured. In addition, the number of diamondback moths that fell into the test solution was measured, and the total number of individuals used in the test was taken as the total number of individuals that were added to the remaining number. The removal rate was calculated by the following formula (s). The obtained removal rate is evaluated according to the following evaluation criteria, and the results are shown in the table.
Removal rate (%) = [Number of individuals dropped into the test solution] ÷ [Total number of individuals] x 100 ... (s)
When the removal rate was 30% or more, it was judged that the detergency was good. Among them, when the removal rate was 50% or more, the detergency was judged to be better, and when the removal rate was 70% or more, the detergency was judged to be even better.

<Evaluation of liquid appearance>
10 mL of the detergent composition of each example was placed in a 20 mL vial, covered, and left in each constant temperature bath at −5 ° C. and 50 ° C. for 1 month, and then the appearance of the liquid was evaluated according to the following evaluation criteria. If it was "◎" or "○", it was evaluated as having a good appearance.
≪Evaluation criteria≫
⊚: Uniform and transparent.
◯: Although it is slightly turbid, it has a transparent feeling, and no precipitate, suspended matter, or separation is observed. Or it is turbid but becomes uniformly transparent when it is heated to 25 ° C.
Δ: Although it is turbid, no precipitation, suspended matter, or separation is observed, and it does not become uniformly transparent at 25 ° C.
X: Precipitate, suspended matter, cloudiness or separation is observed.

(Examples 1 to 22, Comparative Examples 1 to 3)
According to the composition shown in Tables 1 to 3, 100 g of the cleaning agent was prepared by the following procedure. A component (A), a component (B), a component (C), a pH adjuster and ion-exchanged water were put into a 200 mL beaker and stirred with a magnetic stirrer to obtain a liquid detergent of each example.
The obtained liquid detergent was evaluated for foaming, foam disappearance, detergency and liquid appearance (-5 ° C, 50 ° C), and the results are shown in the table.

As shown in Tables 1 to 3, in Examples 1 to 22 to which the present invention was applied, foaming was moderate, and defoaming property and detergency were good. In addition, in Examples 1 to 17 and 19 to 22, the liquid appearance evaluation was good.
In Comparative Example 1 containing no component (A), the detergency evaluation was 26%. In Comparative Example 2 in which the component (A') was contained instead of the component (A), the foam height in the foaming evaluation was 18 cm or more, and the foam height in the foam disappearance evaluation A was 15 cm. In Comparative Example 3 containing no component (B), the bubble height in the bubble disappearance evaluation A was 8 cm.
From these results, it was confirmed that the detergent composition to which the present invention was applied had good detergency, moderately foamed, and was excellent in defoaming property.

(Experimental Examples 1-1-1-7)
According to the composition shown in Table 4, the detergent composition of each example was prepared in the same manner as in Example 1. The obtained detergent composition was subjected to foam extinction evaluation B, and the results are shown in the table.

(Experimental Examples 2-1 to 2-7)
According to the composition shown in Table 5, the detergent composition of each example was prepared in the same manner as in Example 1. The obtained detergent composition was subjected to foam extinction evaluation C, and the results are shown in the table. In addition, foaming evaluation was performed for Experimental Examples 2-2 and 2-5 to 2-7, and the results are shown in the table.

As shown in Table 4, when the detergent composition of each example was added to water and shaken, Experimental Examples 1-3 to 1-7 containing the component (B') contained the component (B). The defoaming property was equal to or higher than that of Experimental Example 1-2.
As shown in Table 5, when the detergent composition of each example was added to the cabbage juice test solution and shaken, in Experimental Example 2-2 of the present invention, the foam height in the foam extinction evaluation C was 1 cm. Met. On the other hand, in Experimental Examples 2-3 to 2-7 containing the component (B') instead of the component (B), the bubble height in the bubble extinction evaluation C was 2 cm or more.
In addition, Experimental Example 2-2 had a foam height of 10 cm in the foaming evaluation, whereas Experimental Examples 2-5 to 2-7 had a foam height of 18 cm or more in the foaming evaluation.
As described above, from Experimental Examples 1-1 to 1-7 and Experimental Examples 2-1 to 2-7, general defoaming agents other than the component (B) exert almost no defoaming effect in the presence of vegetable juice. On the other hand, it was confirmed that only the component (B) exerts a specific defoaming effect.

Claims (6)

It contains a nonionic surfactant (A) represented by the following formula (a) and one or more fatty acids (salts) (B) selected from fatty acids having 8 to 24 carbon atoms and salts thereof, and has a general formula (A). R ¹ ) (R ² ) (R ³ ) N ⁺ (R ^4- O) _m −H · X ⁻ (In the formula, R ^{1 to} R ⁴ independently represent hydrocarbon groups, and X is a counterion atom. Alternatively, a cleaning agent composition for aeration-type foreign matter removing cleaning of vegetables, which does not contain a polyether quaternary ammonium salt represented by (m represents 1 to 500, representing a counterion atomic group).
RO-[(EO) _x / (AO) _y ] -H ... (a)
[In the formula (a), R is a linear or branched alkyl group having 8 to 24 carbon atoms, a linear or branched alkylene group having 8 to 24 carbon atoms, or an alkylaryl group having 8 to 24 carbon atoms. Is. EO represents an oxyethylene group, and x is a number of 1 to 30 representing the average number of repetitions of EO. AO represents an oxyalkylene group having 3 to 4 carbon atoms, and y is a number of 1 to 20 representing the average number of repetitions of AO. [(EO) _x / (AO) _y ] indicates that EO and AO may be block-polymerized or randomly polymerized, and the order of EO and AO does not matter. ] The cleaning agent composition for aeration-type foreign matter removing cleaning of vegetables according to claim 1, wherein the content of the water is 60 to 99% by mass with respect to the total mass of the cleaning agent composition containing water. One or more solvents (C) selected from the group consisting of monohydric alcohols having 2 to 4 carbon atoms, polyhydric alcohols having 2 to 12 carbon atoms, glyceryl ethers having 4 to 12 carbon atoms, and glycol ethers having 3 to 12 carbon atoms. ) , And the content of the component (C) with respect to the total mass of the cleaning agent composition is 0.1 to 30% by mass. Agent composition. _{[(EO) x} / (AO) _y ] in the above formula (a) is any one of claims 1 to 3, wherein (EO) _x and (AO) _y are block-polymerized in this order. A detergent composition for aeration-type foreign matter removing cleaning of vegetables according to. The mass ratio represented by the component (A) / the component (B) is 0.1 to 40, which is used for aeration-type foreign matter removing and cleaning of vegetables according to any one of claims 1 to 4. Cleaning agent composition. A vegetable in which a cleaning solution containing a cleaning agent composition for aeration-type foreign matter removing cleaning of vegetables according to any one of claims 1 to 5 is aerated to remove foreign substances in vegetables in the cleaning liquid. It is a foreign matter removal and cleaning method.
The content of the component (A) with respect to the total mass of the cleaning liquid is 1 to 1000 ppm (mass basis).
A method for removing foreign substances from vegetables, wherein the content of the component (B) with respect to the total mass of the cleaning liquid is 0.1 to 1000 ppm (mass basis).

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