JP2007070261A - Dentifrice composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dentifrice composition having high refreshing, cool feeling and preservation stability, also having gloss of paste, and containing erythritol. <P>SOLUTION: The dentifrice composition comprises (A) 30-60 mass% erythritol having <355 μm particle diameters, (B) 15-30 mass% water, and (C) 0.6-3 mass% binder, and the particle diameters of particles of ≥35 mass% of the erythritol in the component (A) are <90 μm. <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, because the water content is low, the water-soluble polymer compounded as a binder does not dissolve sufficiently, and over time, moisture and other liquid components can be seen to bleed out of the system. There was a problem with sex. Moreover, although a cool feeling was obtained, it did not reach a clear cool feeling in the oral cavity.
JP 2000-191383 A

  An object of the present invention is to provide an erythritol-containing toothpaste composition having high refreshing feeling, cooling feeling and storage stability, and having a glossy paste.

  The present inventor first studied a method for enhancing the refreshing feeling and cooling feeling when brushing teeth, and as a result, contains erythritol having a specific particle size, and further adjusts its content and the amount of water in the composition. Thus, it was found that the cool feeling and the cool feeling can be enhanced. However, the gloss of the paste has been lost due to the high concentration of erythritol. Then, as a result of examining to give the gloss of the paste, it was found that adjusting the particle size of the blended erythritol is effective.

That is, the present invention includes the following components (A), (B) and (C):
(A) Erythritol having a particle diameter of less than 355 μm 30 to 60% by mass
(B) Water 15-30% by mass
(C) Binder 0.6-3 mass%
Is a toothpaste composition in which 35% by mass or more of erythritol in the component (A) has a particle size of less than 90 μm.

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 upper stage, 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 blending amount of erythritol having a particle size of less than 355 μm is 30 to 60% by mass, and from the viewpoint of refreshing feeling and cooling feeling, 32 to 55% by mass is preferable, more preferably 35. -50 mass%.

  From the viewpoint of imparting gloss to the paste, the erythritol particles having a particle diameter of less than 90 μm in the component (A) must be 35% by mass or more, preferably 40% by mass or more of the component (A), More preferably, it is 45 mass% or more, Most preferably, it is 50 mass% or more.

  In the toothpaste composition of the present invention, the content of water (component (B)) is 15 to 30% by mass, more preferably 15 to 25% by mass, from the viewpoints of a high refreshing and cooling feeling and storage stability. is there.

  In the toothpaste composition of the present invention, the content of the binder (component (C)) is from 0.6 to 3% by mass, more preferably from 0.7 to 2% by mass, from the viewpoint of storage stability. More preferably, the content is 0.8 to 1.2% by mass. Examples of the binder of the present invention include sodium alginate, sodium carboxymethyl cellulose, carrageenan, xanthan gum, sodium polyacrylate, hydroxyethyl cellulose, hydroxypropyl cellulose, pectin, tragacanth gum, gum arabic, guar gum, karaya gum, locust bean gum, gellan gum, tamarind It is preferable to use one or more water-soluble polymers composed of gum, psyllium seed gum, polyvinyl alcohol, sodium chondroitin sulfate, and methoxyethylene maleic anhydride copolymer.

  In the toothpaste composition of the present invention, in addition to the above components, for example, foaming agent, foaming aid, abrasive, wetting agent, sweetener, preservative, enzyme, pH adjuster, bactericidal agent, medicinal component, pigment, dye, A fragrance | flavor etc. can be contained suitably.

  In this case, as the abrasive, silica-based abrasives such as precipitated silica, silica gel, aluminosilicate, zirconosilicate, dicalcium phosphate dihydrate and anhydrous, calcium pyrophosphate, calcium carbonate, alumina, hydroxide Aluminum, magnesium acetate, 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 chlorophyllin sodium, copper compounds such as 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 1-2 were prepared. Erythritol was added last.

(1) Evaluation of refreshing feeling Ten subjects (5 males and 5 females) took 1 g of each toothpaste composition on a toothbrush, brushed freely for about 2 minutes, and the refreshing feeling after rinsing the mouth Was evaluated according to the following criteria. In addition, the result of the determination shown in each table 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

(2) Evaluation of storage stability Each toothpaste composition shown in Table 1 was packed in a toothpaste tube for storage, and stored at 5 ° C, room temperature, and 40 ° C for 3 months. Thereafter, the tube was opened and whether or not the liquid component was separated from the toothpaste composition was evaluated according to the following criteria.
<Evaluation criteria for storage stability>
◎: No liquid separation is observed ○: Liquid separation is slightly observed ×: Liquid separation is clearly observed

(3) Evaluation of paste gloss Ten test subjects (5 men and 5 women) took 1 g of each toothpaste composition on a toothbrush, and based on the toothpaste composition of Comparative Example 2, the gloss of the paste was as follows. It was evaluated with.
<Evaluation criteria for paste gloss>
◎: The paste is more glossy than the standard toothpaste ○: The paste is slightly glossy than the standard toothpaste ×: The gloss of the paste is equal to or less than the standard toothpaste

(4) Evaluation of cool feeling Ten subjects (5 men, 5 women) took 1 g of each toothbrushing composition on a toothbrush and brushed freely for about 2 minutes. Based on the toothpaste composition of Comparative Example 2, Cool feeling was evaluated according to the following criteria.
<Evaluation criteria for coolness>
◎: Clearly cooler than standard toothpaste ○: Slightly cooler than standard toothpaste ×: Cooler than or equal to standard toothpaste

  As shown in Table 1, since the toothpaste compositions of Examples 1 to 4 contain a large amount of erythritol having a particle size of 355 μm or less, the results are excellent in refreshing feeling, paste gloss, and immediate effect of cooling feeling. It was. Further, the toothpaste compositions of Examples 2 to 4 contained more erythritol having a particle size of 355 μm or less, and thus the refreshing feeling was further improved. In addition, the toothpaste compositions of Examples 1 to 4 had a glossy paste despite containing a large amount of erythritol because 35% by mass or more of erythritol had a particle diameter of less than 90 μm. Moreover, since it contained 15-30 mass% of moisture and 0.6-3 mass% of binder, it was excellent in long-term storage stability.

  On the other hand, the toothpaste composition of Comparative Example 1 contained only 5% by mass of erythritol and also had a large amount of water in the composition, so that a sufficient refreshing feeling and cooling feeling could not be obtained. Moreover, since the toothpaste composition of Comparative Example 2 contains a large amount of erythritol having a particle diameter of 355 μm or more, the gloss and coolness of the paste are inferior to those of Examples 1 to 4, and the content of the binder As a result, the storage stability was poor.

Claims (1)

The following components (A), (B) and (C):
(A) Erythritol having a particle diameter of less than 355 μm 30 to 60% by mass
(B) Water 15-30% by mass
(C) Binder 0.6-3 mass%
A dentifrice composition in which 35% by mass or more of erythritol in the component (A) has a particle size of less than 90 μm.