Oral components

Abstract

To provide an oral composition that effectively removes stains through use of granules, mitigates undesired tactile sensations, and ensures strong olfactory and gustatory perceptions derived from a flavor component.SOLUTION: An oral composition contains following components (A) and (B): (A) silica granules with a moisture content of 50% or more and 80% or less and (B) one or two ore more kinds of a flavor represented by a specific formula. In the oral composition, a mass ratio between a total moisture content (W) and a content of the component (A), expressed by (W) / (A), is 2.5 or more and 9.5 or less.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oral composition. [Background technology]

[0002] The adhesion of various stains such as dental plaque to tooth surfaces can cause tooth decay, periodontal disease, etc. Therefore, oral compositions containing various granules have been developed to effectively enhance the ability to remove such stains.

[0003] For example, Patent Document 1 discloses an oral composition containing a water-soluble metaphosphate and further blended with abrasive silica or silica granules, which attempts to make the tooth surface feel smooth and enhance the cleaning sensation. Also, Patent Document 2 discloses a dentifrice containing wet-process silica granules having a specific particle size, disintegration strength, and abrasive power, which enhances awareness of the aesthetic effect of the granules and the stain-removing effect due to the feel of the granules in the oral cavity. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-000420 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-250456 Summary of the Invention [Problem to be solved by the invention]

[0005] Although the granules enhance the stain-removing ability of these oral compositions, they can also cause a dry feeling in the oral cavity or an excessively powdery, gritty feel, which can reduce the comfort of use. Furthermore, although many of these oral compositions contain flavorings to impart a desired flavor, the presence of granules tends to reduce the flavor. However, in none of the above patent documents has sufficient consideration been given to ensuring the flavor of the flavoring while suppressing the occurrence of unwanted textures such as a powdery and gritty texture caused by granules, and there is still room for improvement.

[0006] Therefore, the present invention relates to an oral composition that can exhibit excellent stain removal ability due to the granules, while suppressing the occurrence of unwanted tactile sensations, and can effectively exhibit the flavor of the fragrance. [Means for solving the problem]

[0007] Therefore, the present inventors conducted extensive research to solve the above problems, and as a result, discovered an oral composition that contains high-moisture content silica granules and a specific fragrance together with water, and by setting the silica granules to water in a specific mass ratio, the composition allows the user to experience the excellent stain removal ability of the granules while suppressing the occurrence of unwanted tactile sensations, resulting in a comfortable feel when used, and also allows the fragrance to effectively bring out its flavor.

[0008] That is, the present invention provides a composition comprising the following components (A) and (B): (A) Silica granules with a moisture content of 50% or more and 80% or less (B) one or more fragrances represented by the following formula (1):

[0009] [ka]

[0010] (In formula (1), R 1 and R 2 are each independently a hydrogen atom, an aldehyde group, a carboxy group, an alkoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms. 1 or R 2 When is an alkyl group having 2 or more carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group. R 3 represents a hydrogen atom, a hydroxyl group, or an alkoxy group. An oral composition comprising: The oral composition has a mass ratio ((W) / (A)) of the total water content (W) contained in the oral composition to the content of component (A) of 2.5 or more and 9.5 or less. [Effects of the Invention]

[0011] The oral composition of the present invention effectively removes dirt that accumulates or adheres not only to the surface of the teeth but also to narrow areas such as the gaps between teeth and adjacent areas, while suppressing the occurrence of a dry feeling in the oral cavity or a powdery, gritty feeling, providing a comfortable feel with an excellent cleaning sensation accompanied by a good granular feel, and also effectively bringing out the flavor of the fragrance. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will be described in detail below. In the present invention, "comfortable feel when used" means that granules can be felt in the mouth (hereinafter also referred to as "granular feel"), and that, together with this granular feel, there is a real feeling that dirt remaining and adhering not only to the surface of the teeth but also to narrow areas such as the gaps between teeth and adjacent areas has been removed (hereinafter also referred to as "clean feeling"), and that the feeling of dryness in the mouth and the powdery, gritty feel of granular texture (hereinafter also referred to as "the onset of unwanted feelings") are suppressed. Furthermore, "flavor development" means that the sensation of the flavor derived from the flavoring agent spreading in the mouth is obtained.

[0013] The oral composition of the present invention contains, as component (A), silica granules having a moisture content of 50% to 80%. In the present invention, the inclusion of such high-moisture silica granules (A) provides a good granular feel and a high cleaning feeling, while contributing to maintaining a specific mass ratio (described below) between the total moisture content (W) contained in the oral composition of the present invention, which effectively brings out the flavor of a specific flavoring (B), making it possible to achieve good flavor development while imparting a comfortable feel when used.

[0014] The water content of component (A) is 50% or more, preferably 55% or more, and 80% or less, preferably 75% or less. The water content (%) of component (A) refers to the value calculated by heating at 105°C for 2 hours, measuring the mass loss (b-loss), and using the mass (a) of component (A) before heating according to the following formula (x): Moisture content (%)={(b-loss) / (a)}×100··(x)

[0015] From the viewpoint of providing a good granular feel in the oral cavity and effectively enhancing the cleaning feel, the disintegration strength of component (A) is preferably 3 gf / piece or more, more preferably 5 gf / piece or more, even more preferably 7 gf / piece or more, and preferably 20 gf / piece or less, more preferably 15 gf / piece or less, and even more preferably 10 gf / piece or less. The disintegration strength of component (A) is preferably 3 to 20 gf / piece, more preferably 5 to 15 gf / piece, and even more preferably 7 to 10 gf / piece.

[0016] The disintegration strength of component (A) is the load when granules with a particle size (185 to 215 μm) are compressed at a loading rate of 1.51 gf / sec using a compression tester (MCTM-500, manufactured by Shimadzu Corporation) and disintegrate, and is the average value measured for 10 to 20 granules, and is the strength in a wet state.

[0017] The average particle size of component (A) is preferably 100 μm or more, more preferably 150 μm or more, from the viewpoint of ensuring high stain removal ability of the granules. Also, the average particle size of component (A) is preferably 300 μm or less, more preferably 250 μm or less, from the viewpoint of effectively penetrating not only the tooth surface but also narrow areas such as the gaps between teeth and adjacent areas of teeth, thereby further enhancing stain removal ability.

[0018] The average particle size of granules means the 50% value of the weight cumulative distribution when the particle size is measured by a sieving method, for example, using an ultrasonic sieve (Tsutsui Scientific Instruments Co., Ltd., program-controlled ultrasonic sieve SW-20AT).

[0019] The deformation rate of component (A) is preferably 35% or more, more preferably 40% or more, and even more preferably 45% or more, from the viewpoint of enabling a high degree of deformation to easily follow the shape of even narrow areas in the oral cavity and ensuring high stain removal ability. Furthermore, the deformation rate of component (A) is preferably 70% or less, more preferably 67% or less, and even more preferably 65% ​​or less, from the viewpoint of effectively increasing the contact area between the granules and the tooth surface and thereby effectively enhancing stain removal ability. The deformation rate of component (A) is preferably 35 to 70%, more preferably 40 to 67%, and even more preferably 45 to 65%.

[0020] The deformation rate of component (A) is the displacement of the particle in the compression direction at the point when the granule collapses when a single wet granule is compressed at a load rate of 1.51 g / sec using a compression tester (Shimadzu Corporation, MCTM-500) divided by the particle diameter before compression, and is the value calculated using the following formula (y): Deformation rate (%) = (displacement in the compression direction at the time of collapse / particle diameter before compression) × 100 (y) More specifically, the deformation rate is calculated for each granule by {(particle diameter a-particle diameter b) / particle diameter a} x 100, where a is the particle diameter before compression and b is the length in the compression direction at the point when the granule collapses after compression, and the deformation rate (%) is the value confirmed for 5 to 50 granules.

[0021] The content of component (A) in the oral composition of the present invention is preferably 5% by mass or more, more preferably 5.5% by mass or more, and even more preferably 7% by mass or more, from the viewpoint of providing a high cleaning feeling while effectively exhibiting the flavor of component (B). Furthermore, the content of component (A) in the oral composition of the present invention is preferably 15% by mass or less, more preferably 11% by mass or less, and even more preferably 9% by mass or less, from the viewpoint of effectively suppressing the occurrence of unwanted tactile sensations and providing a comfortable feel in use. Furthermore, the content of component (A) in the oral composition of the present invention is preferably 5% by mass or more and 15% by mass or less, more preferably 5.5 to 11% by mass, and even more preferably 7 to 9% by mass.

[0022] Component (A) can be produced, for example, by a wet gelation method using sodium silicate and sulfuric acid. Specifically, sodium silicate and sulfuric acid are mixed to produce a silica sol, which is then gelled to produce a silica hydrogel, which is then adjusted for water content and classified. More specifically, an aqueous solution of sodium silicate is first pumped into a mixing nozzle at a constant flow rate, and sulfuric acid is also pumped into the mixing nozzle at a constant flow rate. As a result, the aqueous solution of sodium silicate and sulfuric acid are stirred and mixed in the mixing nozzle to produce a silica sol, which then gels to obtain a silica hydrogel. To obtain a silica hydrogel by gelling the silica sol, the silica sol may be suspended or emulsified in a solvent and gelled in the suspension or emulsion, or the silica sol may be sprayed to form the silica hydrogel.

[0023] The resulting silica hydrogel is then preferably subjected to a hydrothermal treatment, preferably in an alkaline aqueous solution at a temperature of 80° C. to 200° C. and a pH of 8.0 to 9.5. After suitable hydrothermal treatment, silica hydrogel can be converted into component (A) by adjusting its hydration. Such adjustment can be performed using a box dryer, rotary dryer, fluidized bed dryer, or flash dryer. The temperature ranges from 40 to 300°C and the treatment time ranges from 1 second to 60 minutes, depending on the type of equipment used. Alternatively, the hydration can be adjusted by uniformly contacting the silica hydrogel with an adsorbent such as silica xerogel using a fixed-vessel mixer, a rotary-vessel mixer, a fluid-motion mixer, or other equipment.

[0024] After adjusting the moisture content in this manner, the silica granules of component (A) of the present invention can be obtained by appropriately using tumbling granulation, extrusion granulation, compression granulation, crushing granulation, stirring granulation, fluidized bed granulation, spray drying granulation, melt solidification granulation, etc., and then classifying the granules through a sieve.

[0025] The oral composition of the present invention contains, as component (B), one or more flavors represented by the following formula (1):

[0026] [ka]

[0027] In formula (1), R 1 and R 2 are each independently a hydrogen atom, an aldehyde group, a carboxy group, an alkoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms. 1 or R 2 When is an alkyl group having 2 or more carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group. R 3 represents a hydrogen atom, a hydroxyl group, or an alkoxy group. The oral composition of the present invention contains silica granules (A) with a high moisture content, and furthermore, is a composition in which such component (A) maintains a specific mass ratio with respect to the total moisture content (W) contained in the oral composition of the present invention, thereby enabling the flavor derived from these components (B) to be effectively and efficiently exhibited. Although component (B) may be derived from a natural product, it is preferable to use a chemically synthesized component in order to effectively avoid impairing the development of a good flavor due to the presence of impurities.

[0028] From the viewpoint of effectively and efficiently exhibiting flavor, the component (B) is preferably R 1 and R 2 each independently represents a hydrogen atom, an aldehyde group, a methoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms (provided that R 1 or R 2 is an unsaturated alkyl group having 3 carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group, and R 3 represents a hydrogen atom, a hydroxyl group, or a methoxy group, and is one or more fragrances.

[0029] As the component (B), R in formula (1) is more preferable. 1 represents an aldehyde group or an unsaturated alkyl group having 3 carbon atoms (provided that R 1 When R is an alkyl group, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group. 2 and R 3 are one or more fragrances, each independently representing a hydrogen atom, a hydroxyl group, or a methoxy group.

[0030] More specifically, component (B) represented by formula (1) is more preferably a phenylpropanoid having one benzene ring and 1 to 3 substituents X bonded to carbon atoms constituting the benzene ring, wherein the substituents X have 3 or less carbon atoms, at least one of the substituents X is bonded to a carbon atom on the benzene ring via a carbon bond, and at least one of the substituents X has an oxygen atom (however, the substituent X bonded to a carbon atom on the benzene ring via a carbon bond may also be a substituent having an oxygen atom), and the total number of oxygen atoms contained in all the substituents is 2 or less.

[0031] Specifically, component (B) represented by formula (1) is preferably one or more selected from anethole, eugenol, anisaldehyde, cinnamic aldehyde, thymol, vanillin, benzoic acid, and benzaldehyde, more preferably one or more selected from anethole, eugenol, anisaldehyde, cinnamic aldehyde, and thymol, and even more preferably one or more selected from anethole, eugenol, anisaldehyde, and cinnamic aldehyde.

[0032] For example, anethole is a flavoring agent that imparts an anise-like aroma, and its content may vary depending on the desired flavor, but is preferably 0.0001 to 0.5% by mass, and more preferably 0.0004 to 0.24% by mass in the oral composition of the present invention. Eugenol is a flavoring agent that imparts a clove-like spicy aroma, and its content may vary depending on the desired flavor, but is preferably 0.00001 to 0.25% by mass, and more preferably 0.00002 to 0.14% by mass in the oral composition of the present invention. Anisaldehyde is a fragrance that imparts a mimosa-like scent, and its content may vary depending on the desired flavor, but is preferably 0.0001 to 0.1 mass %, more preferably 0.0003 to 0.06 mass %, in the oral composition of the present invention. Cinnamic aldehyde is a flavoring agent that imparts a balsamic scent, and its content may vary depending on the desired flavor, but is preferably 0.000001 to 0.05% by mass, and more preferably 0.000002 to 0.03% by mass in the oral composition of the present invention. Thymol is a flavoring agent that imparts a thyme-like spicy aroma, and its content may vary depending on the desired flavor, but is preferably 0.00005 to 0.2 mass %, more preferably 0.0001 to 0.1 mass %, in the oral composition of the present invention.

[0033] From the viewpoint of effectively achieving a good flavor release, the content of component (B) in the oral composition of the present invention is preferably 0.0001% by mass or more in total, more preferably 0.0002% by mass or more, even more preferably 0.0005% by mass or more, still more preferably 0.005% by mass or more, and even more preferably 0.008% by mass or more. The content of component (B) in total is preferably 1% by mass or less, more preferably 0.8% by mass or less, even more preferably 0.5% by mass or less, still more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The total content of component (B) in the oral composition of the present invention is preferably 0.0001% by mass or more and 1% by mass or less, more preferably 0.0002 to 0.8% by mass, even more preferably 0.0005 to 0.5% by mass, still more preferably 0.005 to 0.3% by mass, and even more preferably 0.008 to 0.2% by mass.

[0034] The mass ratio ((A) / (B)) of the content of component (A) to the content of component (B) is preferably 10 or more, more preferably 20 or more, even more preferably 40 or more, still more preferably 100 or more, still more preferably 500 or more, and preferably 10,000 or less, more preferably 5,000 or less, and even more preferably 1,000 or less, from the viewpoint of effectively exhibiting the flavor of component (B) and effectively achieving both a pleasant feel in use and good flavor development. The mass ratio ((A) / (B)) of the content of component (A) to the content of component (B) is preferably 10 or more and 10,000 or less, more preferably 20 to 5,000, even more preferably 40 to 1,000, still more preferably 100 to 1,000, and even more preferably 500 to 1,000.

[0035] The oral composition of the present invention contains water. Therefore, the total water content (W) in the oral composition of the present invention means the total amount of water contained in the oral composition, including not only the purified water and the like contained in the oral composition but also the water contained in each of the components contained therein, i.e., the water contained in the above-mentioned component (A). By adjusting the total water content in the oral composition while maintaining a specific mass ratio between the component (A) and the oral composition, as described below, it is possible to effectively achieve both a comfortable feel in use due to the component (A) and a good flavor development.

[0036] The total water content (W) contained in the oral composition of the present invention is preferably 25% by mass or more, more preferably 28% by mass or more, even more preferably 30% by mass or more, still more preferably 33% by mass or more, still more preferably 35% by mass or more, preferably 60% by mass or less, more preferably 56% by mass or less, even more preferably 54% by mass or less, still more preferably 52% by mass or less, and even more preferably 50% by mass or less.The total water content (W) contained in the oral composition of the present invention is preferably 25% by mass or more and 60% by mass or less, more preferably 28% by mass or more and 56% by mass or less, even more preferably 30% by mass or more and 54% by mass or less, still more preferably 33 to 52% by mass, and even more preferably 35 to 50% by mass.

[0037] The total water content (W) of the oral composition of the present invention can be calculated from the water content of the blended components, such as purified water, and the water content of the blended components, such as component (A), but can also be measured using a Karl Fischer moisture meter. For example, a trace water meter (manufactured by Hiranuma Sangyo Co., Ltd.) can be used as the Karl Fischer moisture meter. With this device, 5 g of the oral composition is suspended in 25 g of anhydrous methanol, and 0.02 g of this suspension is taken to measure the total water content (W).

[0038] The mass ratio ((W) / (A)) of the total water content (W) to the content of component (A) in the oral composition of the present invention is, from the viewpoint of effectively achieving both a pleasant feel in use and a favorable flavor development, particularly from the viewpoint of effectively suppressing the occurrence of unwanted tactile sensations, 2.5 or more, preferably 3 or more, more preferably 3.5 or more, even more preferably 4.2 or more, still more preferably 5 or more, and 9.5 or less, preferably 9 or less, more preferably 8.5 or less, even more preferably 7.5 or less, and still more preferably 7 or less. The mass ratio ((W) / (A)) of the total water content (W) to the content of component (A) in the oral composition of the present invention is 2.5 or more and 9.5 or less, preferably 3 to 9, more preferably 3.5 to 8.5, even more preferably 4.2 to 7.5, and even more preferably 5 to 7.

[0039] From the viewpoint of providing a comfortable feel when used and effectively achieving a good flavor, the mass ratio ((W) / (B)) of the total water content (W) to the content of component (B) in the oral composition of the present invention is preferably 100 or more, more preferably 200 or more, even more preferably 500 or more, even more preferably 1000 or more, even more preferably 2500 or more, and preferably 10000 or less, more preferably 8000 or less, more preferably 6000 or less, and even more preferably 4850 or less. The mass ratio ((W) / (B)) of the total water content (W) to the content of component (B) in the oral composition of the present invention is preferably 100 to 10000, more preferably 200 to 8000, even more preferably 500 to 6000, still more preferably 1000 to 4850, and even more preferably 2500 to 4850.

[0040] It is preferable that the oral composition of the present invention further contains carboxymethyl cellulose or a salt thereof (D) in order to ensure good storage stability and effectively achieve both a pleasant feel in use and a good flavor development. The content of component (D) in the oral composition of the present invention is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, even more preferably 1% by mass or more, and preferably 4% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. The content of component (D) in the oral composition of the present invention is preferably 0.5 to 4%, more preferably 0.8 to 3% by mass, and even more preferably 1 to 2% by mass.

[0041] From the viewpoint of effectively achieving both a pleasant feel in use and a good flavor, the mass ratio of the content of component (A) to the content of component (D) ((A) / (D)) is preferably 3 or more, more preferably 4 or more, even more preferably 5 or more, and preferably 12 or less, more preferably 10 or less, even more preferably 9.5 or less, and still more preferably 8 or less. The mass ratio of the content of component (A) to the content of component (D) ((A) / (D)) is preferably 3 to 12, more preferably 4 to 10, even more preferably 5 to 9.5, and even more preferably 5 to 8.

[0042] To more fully exert its stain-removing ability, the oral composition of the present invention may contain abrasive silica having an oil absorption of 50 to 150 mL / 100 g. The content of such abrasive silica in the oral composition of the present invention is preferably 2 to 15% by mass, more preferably 5 to 10% by mass. In the present invention, powder in the range of less than 50 μm is considered an abrasive, and is distinguished from "granules" such as component (A) used in the present invention.

[0043] In addition to the above components, the oral composition of the present invention may contain, as appropriate, fragrances other than the above component (B), such as fragrance compounds described in "Perfume and Flavor Chemicals" edited by Steffen Arctander, Montclair, NJ (USA) (1969), "Synthetic Fragrances - Chemistry and Product Knowledge" edited by the Synthetic Fragrances Editorial Committee (The Chemical Daily, December 20, 2016, revised and expanded edition), and "Fundamentals of Fragrances and Fragrance Blending" edited by Nakajima Mototaka, Sangyo Tosho (1995 first edition), etc.; anionic surfactants such as alkyl sulfate ester salts, alkyl sulfonate salts, and acylamino acid salts, and other surfactants; bactericides; sugar alcohols such as sorbitol and erythritol; humectants such as glycerin, propylene glycol, and polyethylene glycol; preservatives; medicinal ingredients and other active ingredients; pigments, etc., within the scope of not inhibiting the effects of the present invention. [Example]

[0044] The present invention will be described in detail below with reference to the following examples. Unless otherwise specified in the tables, the content of each component is expressed in mass %.

[0045] [Preparation of Silica Granules X] As granules of component (A), silica granules X were prepared by the wet gelation method using sodium silicate and sulfuric acid as described above. Specifically, an aqueous solution of sodium silicate was first pumped into a mixing nozzle at a constant flow rate, while sulfuric acid was pumped into the nozzle at a constant flow rate. The aqueous solution of sodium silicate and sulfuric acid were stirred and mixed in the mixing nozzle to produce a silica sol, which was then gelled to obtain a silica hydrogel. The silica hydrogel was then subjected to water content adjustment and classification to obtain silica granules X. The moisture content of silica granules X measured by the above method using formula (x) was 60%, the disintegration strength was 7 g / granule, the average particle size was 200 μm, and the deformation rate was 48%.

[0046] [Preparation of Silica Granules Y] According to the manufacturing method described in JP 2011-11998 A, a water slurry, which is a mixture containing silica, sodium hydroxide, cellulose, and water, was subjected to spray drying to obtain silica granules Y (silica content: 94% by mass, cellulose content: 5% by mass, sodium hydroxide content: 1% by mass). The water content of the silica granules Y measured by the above method using formula (x) was 3%, the disintegration strength was 7 g / granule, the average particle size was 200 μm, and the deformation rate was 3%.

[0047] [Examples 1 to 9, Comparative Examples 1 to 4, Comparative Examples 5-1 to 5-2, Comparative Examples 6 to 9] Using the obtained silica granules X or silica granules Y, oral compositions were obtained according to the formulations shown in Tables 1 and 2. Next, each evaluation was carried out according to the following methods. The results are shown in Tables 1 and 2.

[0048] <Evaluation of Usability and Flavor> The subjects were then brushed for 1 minute, with 1 g of the resulting oral composition placed on a toothbrush. Four expert panelists evaluated the oral sensation (granular sensation and unwanted sensation) and flavor release from the beginning to the end of the brushing in accordance with the following criteria, and the average values ​​were calculated. In addition, the lower the values ​​for all evaluation items, the more comfortable the feel of use is with an excellent granular feel and with unnecessary feel suppressed, and the more effectively the flavor can be brought out.

[0049] Evaluation of granular feel 1: Has a strong granular feel 2: Slightly granular 3: Not too granular 4: No granular feeling

[0050] Evaluation of unwanted texture (rough texture) 1: No gritty feeling 2: Not too gritty 3: Slightly gritty texture 4: It feels rough to the touch

[0051] Evaluation of flavor development 1: You can really feel the spread of flavor. 2: Feel the spread of flavor 3: I can feel the aroma spreading a little. 4: I don't feel much of a flavor spread.

[0052] [Table 1]

[0053] [Table 2]

[0054] According to the above results, Examples 1 to 6, which are oral compositions of the present invention, showed lower values ​​in all evaluation items than Comparative Examples 1 to 6, which used low-moisture content silica granules Y. In other words, it can be seen that Examples 1 to 6, like Examples 7 to 9, effectively exhibit flavor development while providing a comfortable feel when used. On the other hand, it can be seen that comparison example 5-1, which uses silica granules X with a high moisture content but contains only a fragrance (menthol) other than component (B), shows no difference in flavor release compared to comparison example 5-2, which uses silica granules Y with a low moisture content.

Claims

1. The following components (A) and (B): (A) Silica granules having a moisture content of 50% or more and 80% or less (B) one or more fragrances represented by the following formula (1): 【Chemistry 1】 (In formula (1), R １ and R ２ each independently represents a hydrogen atom, an aldehyde group, a carboxy group, an alkoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms. １ or R ２ When is an alkyl group having two or more carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group. R ３ represents a hydrogen atom, a hydroxyl group, or an alkoxy group. An oral composition comprising: An oral composition in which the mass ratio ((W) / (A)) of the total water content (W) contained in the oral composition to the content of component (A) is 2.5 or more and 9.5 or less.

2. 2. The oral composition according to claim 1, wherein the mass ratio ((A) / (B)) of the content of component (A) to the content of component (B) is 10 or more and 10,000 or less.

3. 3. The oral composition according to claim 1, wherein the content of component (A) is 5% by mass or more and 15% by mass or less.

4. 3. The oral composition according to claim 1, wherein the content of component (B) is 0.0001% by mass or more and 1% by mass or less.

5. 3. The oral composition according to claim 1, wherein the component (A) has a disintegration strength of 3 gf / piece or more and 20 gf / piece or less.

6. 3. The oral composition according to claim 1, wherein the average particle size of component (A) is 100 μm or more and 300 μm or less.

7. Further, it contains carboxymethyl cellulose or a salt thereof (D), and 3. The oral composition according to claim 1, wherein the mass ratio ((A) / (D)) of the content of component (A) to the content of component (D) is 3 or more and 12 or less.

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