JP5811882B2 - Infant supplies cleaning composition - Google Patents

Description

  The present invention relates to an infant supplies cleaning composition suitable for cleaning infant supplies such as infant tableware, baby bottles and nipples.

  In recent years, due to an increase in consumer safety, high safety is required for cleaning compositions, such as being safe even in the mouth and being less irritating to the skin. In particular, there is a high awareness of problems in cleaning infant food items such as tableware for infants and toys that may enter the mouth, because there are concerns about accidental swallowing of the cleaning agent and remaining in the infant products. When cleaning and disinfecting articles frequently used by infants with low resistance such as baby bottles, nipples, pacifiers, and toys, it is composed of highly safe food additive components from the viewpoint of safety. It is desirable to use a cleaning agent.

  It is important that ordinary cleaning agents have excellent cleaning power against oil stains. Infants, on the other hand, have less sebum than adults, and the infant diet also contains less fat than adults. For this reason, cleaning agents for cleaning infant tableware and toys are required to have better cleaning performance against protein stains such as powdered milk and dirt than oil stains. In addition, bacteria, fungi, viruses, and the like are considered to be protein stains, and the cleaning performance for protein stains is a particularly important function from the viewpoint of sterilization and sterilization. Furthermore, since most infant products are frequently washed, if the degreasing power of the cleaning agent is too strong, sebum is removed from the hand skin, which may cause hand-shaking. Therefore, it is desired that the cleaning agent for infants and the like has excellent hand-preventing property by having a sufficient cleaning power against protein stains and an appropriate degreasing power.

  Furthermore, from the viewpoints of safety and usability, it is also important that bubbles are quickly blown out during rinsing and can be washed out in a short time. If the rinsing time is long due to poor foam loss, stickiness, or bitterness and odor derived from the cleaning agent, not only the work efficiency is lowered, but also there is a case that the hand is damaged. Accordingly, there has been a demand for a detergent composition that is composed only of components used as food additives and is excellent in rinsing properties, washing power against protein stains, anti-wetting properties, and sterilizing power.

  So far, as a detergent composition composed of food additive ingredients, a detergent composition mainly composed of sucrose fatty acid ester, polyglycerin fatty acid ester, and polyoxyethylene sorbitan fatty acid ester has been proposed. .

  For example, Patent Document 1 contains sucrose fatty acid ester, polyglycerin fatty acid ester, monoglycerin fatty acid monoester, and phosphate, and is excellent in safety, detergency, sterilization power and foaming power, and storage stability. Disclosed is a liquid detergent composition for kitchen with good properties.

  Patent Document 2 contains polyoxyethylene sorbitan fatty acid ester, polyglycerin monofatty acid ester, lauric acid or myristic acid, and water as essential components, and is excellent in foamability and foam persistence, and has sufficient antiseptic properties. A cleaning composition having efficacy is disclosed.

  However, it is difficult to say that any of the cleaning compositions have good foam loss, and it may be necessary to rinse for a long time. In addition, frequent washing sometimes caused the hands to feel rough or rough after use. Furthermore, the cleaning power against protein stains is not sufficient, and there are cases where the powdered milk adhering to the feeding bottle cannot be completely removed.

  Therefore, a detergent composition that has been composed only of ingredients that have been used as food additives up to now, and is excellent in all of rinsing properties, detergency against protein stains, anti-wetting properties, and sterilization power is still provided. Not.

JP 2003-261898 A JP 2011-26467 A

  An object of the present invention is to provide an infant product detergent composition that is composed only of ingredients used as food additives and has excellent rinsing properties, cleaning ability against protein stains, anti-wetting properties, and sterilization ability. Is to provide.

  As a result of intensive studies, the present inventors have found that a cleaning composition containing three different types of specific esters in a predetermined amount and a predetermined component ratio can solve the above-described problems and is suitable for cleaning infant products. I found it.

  That is, the present invention provides a. A polyoxyethylene fatty acid sorbitan wherein the acyl group has 12 to 18 carbon atoms, b. Polyglycerol laurate, c. Monoglycerin capric acid monoester, and d. It consists of water, the content of component a is 1 to 15% by mass, the content of component b is 0.5 to 5% by mass, the content of component c is 0.1 to 3% by mass, component a and component b Infant characterized in that the total content of component c (a + b + c) is 3 to 20% by mass, and the content ratio [(a + b) / c] of the sum of components a and b to component c is 3 to 20 This is a product cleaning composition.

The infant product detergent composition of the present invention is composed only of ingredients used as food additives, and is excellent in both rinsing properties, washing power against protein stains, hand-washing resistance, and sterilization power. Suitable for cleaning infant supplies.
In addition, the infant products in the present invention include baby bottles, nipples, pacifiers, teeth, baby utensils (forks, spoons, knives, cups, plates, chopsticks, etc.), educational toys, educational stationery, and other baby products and kids. Supplies are included.

  Hereinafter, embodiments of the present invention will be described. The infant product detergent composition of the present invention contains a component, b component, c component, and d component described below.

[Component a]
The component a used in the present invention is a polyoxyethylene sorbitan fatty acid ester having an acyl group having 12 to 18 carbon atoms, and has a structure in which oxyethylene is polymerized to an ester of sorbitan and a fatty acid. As the fatty acid used for the formation of the ester of component a, one or more selected from saturated or unsaturated fatty acids having 12 to 18 carbon atoms such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, etc. Mixed fatty acids containing can be used. Examples of the mixed fatty acid include corn oil, sunflower oil, olive oil, soybean oil, rapeseed oil and the like. Preferably, lauric acid or oleic acid, more preferably lauric acid is used. The degree of polymerization of polyoxyethylene is preferably from 15 to 40, more preferably from 15 to 25 in terms of safety, detergency, and foam removal.

  The HLB value of the polyoxyethylene sorbitan fatty acid ester of component a used in the present invention is preferably 14-18, more preferably 14-17, and even more preferably 15-17. When the HLB value is less than 14, the storage stability at low temperatures may be lowered, and when it exceeds 17, the cleaning power may be lowered.

The HLB value described here is obtained by the following formula using Griffin (WC Griffin: J. Soc. Cosmetic Chemist, 33, 1180 (1960)).
HLB = 20 (1-S / A)
(However, S: Saponification value, A: Acid value of fatty acid)

  Specific examples of the component a used in the present invention include polysorbate 20 (polyoxyethylene (20 mol) sorbitan monolaurate), polysorbate 80 (polyoxyethylene (20 mol) sorbitan monooleate), and the like. 20 is particularly preferred from the viewpoint of rinsing properties. More specifically, as a commercial product, Will Surf TF-20 (polyoxyethylene (20 mol) sorbitan monolaurate) manufactured by NOF Corporation can be exemplified.

[Component b]
The component b used in the present invention is polyglycerol laurate which is an ester compound of polyglycerol and lauric acid. Examples of polyglycerin used for the formation of the ester of component b include octaglycerin, nonaglycerin, decaglycerin, dodecaglycerin, tetradecaglycerin, hexadecaglycerin, octadecaglycerin, eicosaglycerin and the like having a polymerization degree of 8-20. These may be used alone or in combination of two or more. Nonaglycerin, decaglycerin, dodecaglycerin are preferable, and decaglycerin is more preferable.

  The HLB value of the polyglycerin laurate ester of component b used in the present invention is preferably 12-17, more preferably 14-17, and even more preferably 15-16. When the HLB value is less than 12, the rinsing property may be lowered. When the HLB value is more than 17, the detergency against the oil component is lowered, and the storage stability at a low temperature may be lowered.

[Component c and component d]
The c component used in the present invention is monoglycerin capric acid monoester which is a monoester compound of glycerin and capric acid. The d component is water.
The above-described a component, b component, c component, and d component constitute the infant product detergent composition of the present invention. The content and content ratio of each component in the composition of the present invention are as follows.

[Content and content ratio]
The component a used in the present invention is 1 to 15% by mass, preferably 3 to 13% by mass, more preferably 5 to 10% by mass in the total amount of the composition. If the content of component a is less than 1% by mass, the cleaning power against protein stains may be reduced. Moreover, when it exceeds 15 mass%, there exists a concern which a bubble breakage worsens and a hand may be produced.

  The component b used in the present invention is 0.5 to 5% by mass, preferably 0.5 to 4% by mass, and more preferably 1 to 3% by mass in the total amount of the composition. When content of b component is less than 0.5 mass%, there exists a possibility that the detergency with respect to protein dirt may fall. On the other hand, when the amount exceeds 5% by mass, the foam breakage deteriorates, and there is a risk that the luster will remain at the time of rinsing.

  The component c used in the present invention is 0.1 to 3% by mass, preferably 0.5 to 2% by mass, and more preferably 0.5 to 1% by mass in the total amount of the composition. When content of c component is less than 0.1 mass%, there exists a possibility that the detergency with respect to protein dirt may fall and sterilization power may also fall. On the other hand, when it exceeds 3% by mass, there is a possibility that the lingering property remains at the time of rinsing and the storage stability at low temperature may be deteriorated.

  In the composition of the present invention, the total content (a + b + c) of each component of a, b and c is 3 to 20% by mass, preferably 4 to 15% by mass, and more preferably 5 to 12% by mass. When a + b + c is less than 3% by mass, the cleaning power against protein stains may be reduced, and further the sterilization power may be reduced. On the other hand, when the amount exceeds 20% by mass, the bubble breakage is deteriorated, and there is a risk that the luster will remain at the time of rinsing.

  The content ratio [(a + b) / c] of the sum of component a and component b and component c used in the present invention is 3-20. When (a + b) / c is less than 3, there is a possibility that the depletion of bubbles will deteriorate. Moreover, when it exceeds 20, there exists a possibility that the detergency with respect to protein stain | pollution | contamination may fall, or a bubble breakage may fall.

  The infant product cleaning composition of the present invention can be prepared by dissolving the a component, the b component, and the c component with water as the d component. In the infant product detergent composition of the present invention, additives commonly used in cosmetics, pharmaceuticals, etc. can be appropriately blended as long as the effects of the present invention are not impaired. It is preferable to use the additives used.

Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. As examples of the infant product detergent composition of the present invention, the detergent compositions shown in Tables 1 and 2 were prepared and evaluated by the following methods. The results are also shown in Table 1 and Table 2.
In addition, content in a table | surface shows the mass%. In Comparative Example 6, the a ′ component is used instead of the a component, in the Comparative Example 7, the b ′ component is used instead of the b component, and in the Comparative Example 8, the c ′ component is used instead of the c component. The total content (a + b + c) and content ratio [(a + b) / c] were calculated.

(1) Rinse properties (out of foam)
Twenty women were panelists, 1 g of each composition was taken on a sponge, and the glass bottle with the powdered milk dirt was washed. As a cleaning target, 10 mL of a powdered milk solution (prepared in 10% aqueous solution of commercially available powdered milk) is filled in a glass bottle, thoroughly shaken so that the powdered milk solution adheres to the whole, dried and evaporated to evaporate water. Using. The bubble breakage at this time was determined as follows.
2 points: When bubbles feel very fast and easy to rinse.
1 point: When it feels that foam is quickly blown out and is easy to rinse.
0 point: When the foam is poor and it is difficult to rinse.

The total score of 20 people was calculated and evaluated according to the following criteria and shown in Table 1 and Table 2.
A: No panel with a total score of 35 or more and a zero score: a detergent composition with very good foam loss.
◯: One or two panelists with a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points: a detergent composition with good defoaming.
(Triangle | delta): A sum total point is 20 points or more and less than 30 points | pieces: It is a detergent composition with a little bad foaming.
X: The total score is less than 20: It is a detergent composition with poor foaming.

(2) Rinse (no sliminess)
The same test as in the previous section was performed, and the luster during rinsing was determined as follows.
2 points: When it feels that it is easy to rinse without any sliminess remaining.
1 point: It feels that it is easy to rinse with almost no luster remaining. 0 point: When it feels that luster remains and it takes time to rinse.

The total score of 20 people was calculated and evaluated according to the following criteria and shown in Table 1 and Table 2.
(Double-circle): There is no panel which determined the total score of 35 points or more and 0 point | piece: It is a cleaning composition without the luster at the time of a rinse.
◯: One or two panelists with a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points: A detergent composition with almost no slickness during rinsing.
(Triangle | delta): A sum total point is 20 points or more and less than 30 points | pieces: It is a detergent composition which has a slight luster at the time of a rinse.
X: The total number of points is less than 20: It is a detergent composition having a luster when rinsed.

(3) Detergency against protein stains (detergency test)
Based on the detergency evaluation method described in JIS K3362: 1998, the following was performed. 1 g of each composition was dissolved in 999 mL of artificial hard water (CaCl ₂ : 55.42 mg / L, MgCl ₂ · 6H ₂ O: 43.51 mg / L) at 25 ° C., and artificially contaminated cloth (EMPA11: Swiss Federation) (Obtained from Materials Testing Laboratory) 5 sheets were put. This was stirred for 10 minutes at a rotational speed of 100 rpm using a detergency tester (Terg-O-To Meter). The artificially contaminated cloth was rinsed under running water, then iron-pressed, the reflectance at 550 nm was measured, the washing rate (%) was calculated by the following formula, and the average value of the washing rate of 5 sheets was calculated. Those having a washing rate of 80% or more were evaluated as detergent compositions having excellent detergency against protein stains.

Washing rate (%) = {(reflectance of contaminated cloth after washing−reflectance of contaminated cloth before washing) / (reflectance of white cloth−reflectance of contaminated cloth before washing)} × 100

(4) Detergency against protein stains (ninhydrin reaction)
A commercially available melamine resin baby tableware was cut into 10 cm × 10 cm sections, and 0.1 g of egg white lysozyme solution, which is a kind of protein, was applied to prepare a specimen. This was immersed in what diluted each composition in 10% aqueous solution. After immersion for 30 minutes, the specimen was taken out, rinsed in ion-exchanged water, and then water was blotted with clean soft paper. The lysozyme remaining on the melamine resin section was stained using a ninhydrin indicator, and the color development state was evaluated according to the following evaluation criteria. Three or more lysozyme were evaluated as a detergent composition having excellent detergency against protein stains.
5 points: Not dyed at all.
4 points: hardly dyes.
3 points: Slightly dyed.
2 points: Pretty dyed.
1 point: It dyes intensely.

(5) Hand-raising prevention property 20 women were used as panelists, 1 g of each composition was taken in their hands, and their skin was washed for 30 seconds. After that, it was rinsed with water until there were no bubbles and no stickiness. The state of the hand skin when this operation was repeated 5 times was determined as follows.
2 points: When it feels that there is no dryness or bulkiness.
1 point: When it feels that there is almost no dryness and bulkiness.
0 point: When dryness or bulkiness is felt.

The total score of 20 people was calculated and evaluated according to the following criteria and shown in Table 1 and Table 2.
A: There is no panel with a total score of 35 or more and a zero score: a detergent composition that is extremely excellent in preventing hand shake.
◯: One or two panelists with a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points: a detergent composition with excellent anti-rare properties.
Δ: Total score of 20 points or more and less than 30 points: A detergent composition slightly lacking in hand-proofing.
X: The total score is less than 20: a detergent composition lacking in hand-shake prevention.

(6) Bactericidal power It performed according to the sanitizer test method of Association of Official Agricultural Chemists (AOAC). That is, 0.1 mL of a bacterial solution adjusted to a number of 10 ⁸ to 10 ⁹ bacteria in Nutrient Broth (NB) medium (manufactured by MERCK) is added to 9.9 mL of the stock solution of each composition. After contact for 30 seconds, 1 mL of the solution is added to 9 mL of a phosphate buffer containing an inactivating agent, and then serial dilution is performed immediately thereafter. The cells were mixed with a plate count agar (PCA) medium (manufactured by MERCK) and cultured at 37 ° C. for 48 hours, and then the number of viable bacteria was measured. The Log Reduction was calculated from the logarithmic difference between the number of inoculated bacteria and the number of surviving bacteria, and evaluated according to the following criteria and shown in Tables 1 and 2.
As test bacteria, Escherichia coli IFO-12734 and Staphylococcus aureus IFO-12732 were used.

  When Log Reduction was different between the two types of test bacteria, the one with the lower score was used for evaluation. In addition, when survival of the bacteria was confirmed after 7 days of culture, it was determined that the sterilization power was insufficient (x) regardless of the value of Log Reduction.

A: Log reduction of the test bacterium is 5 or more: It is a cleaning composition having a very excellent sterilizing power.
○: Log Reduction of the test bacterium is 4 or more and less than 5: It is a detergent composition excellent in sterilizing power.
(Triangle | delta): LogReduction of test microbe is 3 or more and less than 4: It is a cleaning composition with disinfection power somewhat insufficient.
X: Log Reduction is less than 3: A detergent composition with insufficient sterilization power.

* 1: Will Surf TF-20 manufactured by NOF Corporation
* 2: Will Surf TF-80 manufactured by NOF Corporation
* 3: Sunsoft M-12J manufactured by Taiyo Chemical Co., Ltd.
* 4: Sunsoft No. 760 manufactured by Taiyo Chemical Co., Ltd.

* 5: Ryoto Sugar Ester P-1670 manufactured by Mitsubishi Chemical Foods Corporation
* 6: Sunsoft A-181E manufactured by Taiyo Chemical Co., Ltd.
* 7: Sunsoft No. 2500 manufactured by Taiyo Chemical Co., Ltd.

  All of the infant product cleansing compositions of the present invention according to Examples 1 to 8 had good rinsing properties, cleansing power against protein stains, and sterilization power. In addition, it was found that the hand skin after use was not dry and bulky (hereinafter, generally referred to as “dry” or the like) and was excellent in preventing hand shake.

  On the other hand, in Comparative Example 1 in which the content of the component a is large and a + b + c and (a + b) / c are also outside the specified range of the present invention, the foaming is poor and the moisture remains, and the used skin is dried. I felt. In addition, the detergency against protein stains was insufficient. In Comparative Example 2 in which the content of the component b is small, the detergency against protein stains was insufficient. In Comparative Example 3 in which the content of the component b was large and (a + b) / c was also outside the specified range of the present invention, the foaming was poor and the sliminess was remarkable. I felt dryness on the skin after use, partly because the rinse time became longer. In Comparative Example 4 containing no c component, the detergency against protein stains was remarkably low, and the sterilization power was also insufficient.

  In Comparative Example 5 in which the amount of component c was large and (a + b) / c was also outside the specified range of the present invention, foaming was poor, the moisture remained, and the hand skin after use felt dryness. In addition, the detergency against protein stains was insufficient. The reason for this is not clear, but by containing an excessive amount of component c, components a and b become solubilized as component c, resulting in high molecular weight aggregates and reduced permeability to dirt components. it is conceivable that. In Comparative Example 6 that does not contain the a component and instead contains the sucrose hexadecanoate ester (HLB value = 16.5), which is the a ′ component, the skin remains dry during rinsing and the hand skin after use is dried. I felt. In addition, the detergency against protein stains was insufficient. In Comparative Example 7, which does not contain the b component but contains the pentaglycerin monostearate (HLB value = 13.0) instead of the b ′ component, and (a + b) / c is also outside the specified range of the present invention, The cuts were poor and the skin remained sticky, and the hand skin after use felt dry. In Comparative Example 8, which did not contain the c component and instead contained the monoglycerin monostearate, which was the c ′ component, the luster on rinsing was severe, and the hand skin after use felt dryness. Furthermore, the detergency against protein stains was remarkably low and the sterilization ability was insufficient.

Claims (1)

a. A polyoxyethylene fatty acid sorbitan having an acyl group with 12 to 18 carbon atoms,
b. Polyglycerol laurate,
c. Monoglycerol capric acid monoester, and d. It consists of water, the content of component a is 1 to 15% by mass, the content of component b is 0.5 to 5% by mass, the content of component c is 0.1 to 3% by mass, component a and component b Infant characterized in that the total content of component c (a + b + c) is 3 to 20% by mass, and the content ratio [(a + b) / c] of the sum of components a and b to component c is 3 to 20 Article cleaning composition.