JP2007070257A - Dentifrice composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dentifrice composition having not only higher refreshing and cool feeling but also excellent foaming properties, and containing erythritol. <P>SOLUTION: The dentifrice composition comprises (A) 20-60 mass% erythritol having <355 μm particle diameters, (B) 10-40 mass% water, (C) 0.5-2 mass% sodium alkyl sulfate and (D) 0.01-0.5 mass% xanthane gum. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dentifrice composition containing erythritol.

  In general, the purpose of brushing teeth is to clean the mouth and obtain a refreshing feeling. A fragrance ingredient represented by menthol, which is usually included in a toothpaste composition, is indispensable for imparting a refreshing feeling, but in recent years, there has been a tendency to increase the number of oily meals and meals using spices. Therefore, a toothpaste composition having a higher refreshing feeling is desired.

  As a means to improve the refreshing feeling, there are methods such as increasing the blending amount of perfume ingredients or adding a solvent component such as ethanol. However, increasing the blending amount of these ingredients increases the irritation in the oral cavity. Moreover, since foaming is suppressed, there arises a problem that the feeling of use when polished is impaired. Therefore, a toothpaste composition that obtains a higher refreshing feeling without increasing the blending amount of a fragrance component or a solvent such as ethanol is desired.

  Patent Document 1 discloses a toothpaste composition having an excellent refreshing feeling, which contains a component that causes an endothermic hydration reaction such as erythritol and has a water content of 10% by mass or less. However, although a refreshing sensation was obtained, a clear cooling sensation was not obtained in the oral cavity.

On the other hand, many dentifrices contain a foaming agent. Toothpaste foams have a role of delivering active ingredients such as bactericides and anti-inflammatory agents to every corner of the mouth, and a refreshing agent spreads throughout the mouth to obtain a sufficient refreshing feeling. Therefore, a dentifrice with poor foaming not only reduces the effectiveness, but also deteriorates the feeling of use and significantly reduces the user's preference.
JP 2000-191383 A

  An object of the present invention is to provide a toothpaste composition containing erythritol which has a higher refreshing feeling and cooling feeling and is also excellent in foaming.

  The inventor first examined the method of enhancing the refreshing feeling and cooling feeling when brushing teeth, as a result, containing erythritol having a specific particle size, further adjusting the content and the amount of water in the composition, It has been found that the feeling of cooling and cooling can be enhanced by increasing the number of erythritol crystals present in the toothpaste composition. However, since the erythritol present as crystals in the composition is dissolved and becomes liquid when brushing, the viscosity of the foam, which is an important element in brushing, is reduced, resulting in inconvenience that the foam becomes waterless without elasticity. Then, when it further investigated in order to suppress the viscosity fall of a foam, it discovered that a small amount of xanthan gum addition was effective in suppression of the viscosity fall of a foam.

That is, the present invention includes the following components (A) to (D):
(A) Erythritol having a particle diameter of less than 355 μm 20 to 60% by mass
(B) Water 10-40% by mass
(C) Sodium alkyl sulfate 0.5-2% by mass
(D) Xanthan gum 0.01-0.5 mass%
A toothpaste composition containing
The present invention also includes the following components (A) to (D):
(A) Erythritol having a particle diameter of less than 355 μm, 25 to 60% by mass
(B) Water 10-40% by mass
(C) Sodium alkyl sulfate 0.5-2% by mass
(D) Xanthan gum 0.01-0.5 mass%
Is a toothpaste composition.

  According to the present invention, it is possible to provide a toothpaste composition having higher refreshing feeling and cooling feeling and excellent foaming.

The dentifrice composition of the present invention is characterized by containing erythritol (component (A)) having a particle size of less than 355 μm. Normally available erythritol is crystalline erythritol obtained by recrystallizing after fermenting glucose, and its particle size is larger than that of the product of the present invention. Therefore, it is preferable to use what obtained the erythritol grind | pulverized and adjusted the particle diameter for the toothbrushing composition of this invention.
A roller mill, a hammer mill, a high-speed pulverizer, a pulverizer, etc. are generally used to pulverize erythritol, but a high-speed pulverizer and hammer mill that are easy to adjust the particle size and excellent in production efficiency. Is preferred.
The structure of erythritol includes three isomers of L-erythritol, D-erythritol, and meso-erythritol, and the present invention may have any of these structures. As crystalline erythritol, commercially available products such as those manufactured by Nikken Chemical Co., Ltd., Mitsubishi Chemical Foods Co., Ltd., and Celestor are available.

  The particle diameter of erythritol is less than 355 μm because it can provide a cool feeling and a cool feeling, but is preferably 3 μm or more and less than 355 μm. From the viewpoint that the cooling sensation persists in the mouth, it is preferably 45 μm or more and less than 355 μm, more preferably 45 μm or more and less than 300 μm, and particularly preferably 45 μm or more and less than 250 μm.

The erythritol particle size is measured as follows.
Sieve: JIS standard sieve φ75mm
Opening: From the top, a receiver is provided under a sieve having openings of 500 μm, 355 μm, 250 μm, 180 μm, 125 μm, 90 μm and 45 μm, respectively.
Shaker: Micro type electromagnetic vibrator M-2 type (Tsutsui Rikenki Co., Ltd.)
Method: Place 15 g of sample on 500 μm sieve and classify with electromagnetic vibrator for 5 minutes. The total amount of erythritol present on a sieve having openings of 250 μm, 180 μm, 125 μm, 90 μm and 45 μm is defined as erythritol having a particle size of 45 μm or more and less than 355 μm.
The particle size distribution of less than 45 μm can be measured with a dry laser distribution diffraction particle size distribution measuring apparatus.

In the toothpaste composition of the present invention, the content of erythritol having a particle size of less than 355 μm is 20 to 60% by mass, more preferably 25 to 55% by mass, and still more preferably 30 to 50% from the viewpoint of obtaining a high refreshing feeling. % By mass.
For this reason, the compounding quantity of the erythritol whose particle diameter is less than 355 micrometers is 25-60 mass%, More preferably, it is 30-55 mass%, More preferably, it is 35-50 mass%.

  In the toothpaste composition of the present invention, the content of water (component (B)) is 10 to 40% by mass, more preferably 12 to 35% by mass, and still more preferably, from the viewpoints of a high refreshing and cooling feeling and foaming properties. Is 15 to 30% by mass, particularly preferably 18 to 25% by mass.

The composition of sodium alkyl sulfate (component (C)) used in the present invention has 8 to 18 carbon atoms, more preferably 10 to 16 carbon atoms, and still more preferably 12 to 14 carbon atoms. If it has, it can be used in any ratio.
In the dentifrice composition of the present invention, the content of sodium alkyl sulfate is 0.5 to 2% by mass, more preferably 0.8 to 1.8% by mass, more preferably 0.8 to 1.8% by mass, from the viewpoint of foamability and irritation to the oral cavity. Preferably it is 1-1.5 mass%.

  In the present invention, xanthan gum is not particularly limited in its molecular weight or molecular weight distribution as long as it is used as a binder for dentifrices. In the toothpaste composition of the present invention, the content of xanthan gum (component (D)) is 0.01 to 0.5% by mass, more preferably 0, from the viewpoint of suppressing foam viscosity reduction and obtaining elastic foaming. 0.02 to 0.3% by mass, more preferably 0.03 to 0.2% by mass.

  In the toothpaste composition of the present invention, from the viewpoint of supplementing storage stability, a binder other than xanthan gum can be appropriately added. 0.6 to 3% by mass, more preferably 0.7 to 2% by mass, and even more preferably 0.8 to 1.2% by mass. Binders include sodium alginate, sodium carboxymethylcellulose, carrageenan, sodium polyacrylate, hydroxyethylcellulose, hydroxypropylcellulose, pectin, tragacanth gum, gum arabic, guar gum, karaya gum, locust bean gum, gellan gum, tamarind gum, psyllium seed gum It is preferable to use one or more water-soluble polymers comprising polyvinyl alcohol, sodium chondroitin sulfate, and a methoxyethylene maleic anhydride copolymer.

  In order to supplement foaming, a nonionic surfactant may be further added to the toothpaste composition of the present invention. Nonionic surfactants include polyglycerin fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, polyoxyethylene higher alcohol ether, polyoxyethylene fatty acid ester, alkyl glucoside, polyoxyethylene polyoxypropylene copolymer, etc. It is done. One or more kinds of nonionic surfactants selected from these may be added. In the toothpaste composition, the content of these nonionic surfactants is 0.1 to 2% by mass, more preferably 0.2%. It is -1.5 mass%, More preferably, it is 0.3-1 mass%.

  The toothpaste composition of the present invention appropriately contains, for example, abrasives, wetting agents, sweeteners, preservatives, enzymes, pH adjusters, bactericides, medicinal ingredients, pigments, dyes, fragrances and the like in addition to the above components. be able to. Moreover, you may contain erythritol of other particle diameters (355 micrometers or more). Even in this case, the average particle size of all erythritol particles contained in the composition or the average particle size of all erythritol particles to be blended is preferably 200 μm or less, more preferably 30 to 150 μm. When the average particle size is 45 μm or more, the sieving rate (cumulative amount) is plotted on a regular established paper and a value corresponding to 50% is adopted. When the average particle size is less than 45 μm, a dry laser distribution diffraction type particle size distribution measuring device is used. The value measured by is adopted.

  As abrasives, silica-based abrasives such as precipitated silica, silica gel, aluminosilicate, zirconosilicate, dicalcium phosphate dihydrate and anhydrous, calcium pyrophosphate, calcium carbonate, alumina, aluminum hydroxide, acetic acid Magnesium, tribasic magnesium phosphate, zeolite, synthetic resin-based abrasive and the like are preferably used.

  As the wetting agent, glycerin, sorbitol, propylene glycol, polyethylene glycol, xylitol, maltite, lactit, trehalose and the like are preferably used.

  Furthermore, examples of the sweetening agent include saccharin sodium, aspartame, thaumatin, acesulfame potassium, stevioside, stevia extract, paramethoxycinnamic aldehyde, neohesperidyl dihydrochalcone, and perilartin.

  As a fragrance, 1-menthol, carvone, anethole, eugenol, limonene, peppermint oil, spearmint oil, ocimen, n-amyl alcohol, citronellol, α-terpineol, methyl salicylate, methyl acetate, citronole acetate, cineol, linalool, Examples include ethyl linalool, crocodile, thymol, lemon oil, orange oil, sage oil, rosemary oil, cinnamon oil, pimento oil, perilla oil, clove oil, and eucalyptus oil.

  Other various active ingredients include water-soluble phosphate compounds such as potassium phosphate and sodium salt of orthophosphoric acid, allantochlorohydroxyaluminum, hinokitiol, lysozyme chloride, glycyrrhizic acid and its salts, sodium chloride, tranexamic acid, epsilon. Aminocaproic acid, dl-tocopherol acetate, azulene, glycyrrhetinic acid, copper compounds such as sodium chlorophyllin, copper gluconate, aluminum lactate, strontium chloride, potassium nitrate, berberine, hydroxamic acid and its derivatives, sodium tripolyphosphate, zeolite, dextranase , Mutanase, amylase, methoxyethylene, maleic anhydride copolymer, polyvinylpyrrolidone, epidihydrocholesterin, dihydrocholesterol, zinc citrate, Float, cork tree bark, clove, rosemary, scutellaria, an extract of such safflower, alpha-bisabolol, chlorhexidine salts, triclosan, cetylpyridinium chloride, benzethonium chloride, trichlorocarbanilide, and the like.

  In the toothpaste composition of the present invention, it is desirable that erythritol is dispersed in a powder state from the viewpoint of obtaining a higher refreshing feeling. For this purpose, erythritol is preferably added as a powder to the final production process. By using such a production method, erythritol can be present in a powder state in the toothpaste composition without being substantially dissolved in water. Specifically, for example, after measuring the prescribed amount of each component such as purified water, wetting agent, binder, flavoring agent, preservative, abrasive, foaming agent, sweetener, and medicinal component, it is according to certain production conditions. The toothpaste composition of the present invention can be produced by mixing and fully swelling the binder, and further adding a polishing agent, a foaming agent, a flavoring agent, and powdered erythritol and defoaming and mixing.

[Preparation of toothpaste composition]
According to the composition shown in Table 1, toothpaste compositions of Examples 1-4 and Comparative Examples 1-3 were prepared.
Erythritol was added last.

(1) Evaluation of cool feeling and cool feeling Ten subjects (5 men and 5 women) took 1 g of each brushing composition on a toothbrush and brushed freely for about 2 minutes. The strength of the refreshing feeling after rinsing was evaluated according to the following criteria. In addition, the result of the determination shown in Table 1 shows the highest evaluation among 10 people.
<Evaluation criteria for coolness>
◎: Strong feeling in mouth ○: Refreshing feeling in mouth is slightly strong ×: Feeling in mouth is weak <Evaluation criteria for cool feeling>
◎: The mouth feels clear and the cool feeling persists. ○: The mouth feels a little cool. ×: The mouth feels cool.

(2) Evaluation of foam retention Ten subjects (5 men, 5 women) took 1 g of each toothpaste composition on a toothbrush and brushed freely for about 2 minutes, and then evaluated foaming according to the following criteria.
<Evaluation criteria for usability>
◎: Elastic foam, good foaming ○: Slightly elastic foam, good foaming x: Water-like foam, poor foaming

  As shown in Table 1, the toothpaste compositions of Examples 1 to 4 contain a large amount of erythritol having a particle size of less than 355 μm, and further contain xanthan gum, so that the refreshing feeling, cooling feeling and foaming are excellent. was. Furthermore, since the toothpaste compositions of Examples 2 to 4 contained more erythritol having a particle size of less than 355 μm, the refreshing feeling and cooling feeling were further improved. In addition, no liquid separation was observed in any of the toothpaste compositions in the storage stability test at room temperature for 3 months.

  On the other hand, in the toothpaste composition of Comparative Example 1, the content of erythritol having a particle size of less than 355 μm was small, so that the refreshing feeling and the cooling feeling were weak. Further, the toothpaste composition of Comparative Example 2 did not contain xanthan gum, and was a watery foam with poor foaming. Further, the toothpaste composition of Comparative Example 3 contains a large amount of erythritol having a particle size of 355 μm or more, so the refreshing feeling and cooling feeling are weak, and further, it does not contain xanthan gum, it is watery foam, and foaming is bad. It was a result.

Claims (3)

The following components (A) to (D):
(A) Erythritol having a particle diameter of less than 355 μm 20 to 60% by mass
(B) Water 10-40% by mass
(C) Sodium alkyl sulfate 0.5-2% by mass
(D) Xanthan gum 0.01-0.5 mass%
A toothpaste composition comprising: The following components (A) to (D):
(A) Erythritol having a particle diameter of less than 355 μm, 25 to 60% by mass
(B) Water 10-40% by mass
(C) Sodium alkyl sulfate 0.5-2% by mass
(D) Xanthan gum 0.01-0.5 mass%
A toothpaste composition. The dentifrice composition according to claim 1 or 2, which contains a binder other than the component (D), and further contains 0.6 to 3% by mass of the whole binder containing the component (D).