Oral composition

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 the tooth surface can cause tooth decay, periodontal disease, etc. Therefore, oral compositions containing various granules have been developed to effectively improve the ability to remove such stains.

[0003] For example, Patent Document 1 discloses an oral composition containing a water-soluble metaphosphate and further containing abrasive silica or silica granules, which is an attempt to make the tooth surface feel smooth and improve the cleaning effect. Patent Document 2 discloses a dentifrice containing wet-process silica granules having a specific particle size, disintegration strength, and abrasive power, which enhances the recognition 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] Patent Publication No. 2022-000420 [Patent Document 2] JP 2004-250456 A Summary of the Invention [Problem to be solved by the invention]

[0005] Although the granules enhance the stain-removing ability of such oral compositions, they may cause a dry feeling in the oral cavity or an excessively powdery and gritty feeling, which may reduce the feeling of use. In addition, although many of such oral compositions contain flavorings to impart a desired flavor, the presence of granules tends to reduce the flavor. However, none of the above patent documents have sufficiently examined how to ensure 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 which exhibits excellent stain removing ability due to the granules, while suppressing the occurrence of unwanted tactile sensations, and which 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 which contains water together with silica granules having a high moisture content and a specific fragrance, and by adjusting the mass ratio of the silica granules to the water, can provide a comfortable feel while suppressing the occurrence of unwanted tactile sensations and allowing the flavor of the fragrance to be effectively expressed, while still allowing the user to experience the excellent stain removal ability of the granules.

[0008] That is, the present invention relates to a composition comprising 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):

[0009] [ka]

[0010] (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 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 present invention provides an oral composition having 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. Effect of the Invention

[0011] The oral composition of the present invention effectively removes dirt that accumulates or adheres not only to the surfaces 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 allowing the flavor of the fragrance to be effectively and efficiently exhibited. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The present invention will be described in detail below. In the present invention, "comfortable feel" means that granules can be felt in the mouth (hereinafter also referred to as "granular feel"), and that, together with this granular feel, the user feels that dirt remaining and adhering not only to the surfaces of the teeth but also to small areas such as the gaps between the teeth and adjacent areas has been removed (hereinafter also referred to as "clean feel"), while the user is able to suppress the occurrence of a dry feel in the mouth or a powdery, gritty feel similar to the texture of granules (hereinafter also referred to as "occurrence of unwanted feels"). Moreover, "flavorful flavor" means that the sensation of the flavor derived from the flavor 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% or more and 80% or less. In the present invention, the inclusion of such silica granules (A) having a high moisture content contributes to maintaining a specific mass ratio (described later) between the total moisture content (W) contained in the oral composition of the present invention and the silica granules (A) while providing a good granular feel and a high cleaning feel, and allows the specific flavoring (B) to be effectively released, making it possible to achieve good flavor release while providing a comfortable feel when used.

[0014] The moisture 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) means a value calculated by heating at 105°C for 2 hours, measuring the mass loss (b-loss), and calculating 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, preferably 20 gf / piece or less, more preferably 15 gf / piece or less, 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, even more preferably 7 to 10 gf / piece.

[0016] The disintegration strength of component (A) is the load at which granules having a particle size (185 to 215 μm) are compressed and disintegrated at a loading rate of 1.51 gf / sec using a compression tester (Shimadzu Corporation, MCTM-500), 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 gaps between teeth and adjacent areas of teeth, thereby further enhancing the 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 Rikagaku Kikaisha, 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 a narrow part in the oral cavity and ensuring high stain removal ability. Also, 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 effectively enhancing the stain removal ability. And 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 granule in a wet state 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 means the value calculated by 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 a value confirmed for 5 to 50 granules, calculated as a deformation rate (%) for each granule, 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, according to {(particle diameter a-particle diameter b) / particle diameter a} x 100.

[0021] The content of component (A) in the oral cavity 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 effectively exerting the flavor of component (B) while providing a high cleaning feeling. Also, the content of component (A) in the oral cavity 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 an unwanted feeling and providing a comfortable feeling of use. And, the content of component (A) in the oral cavity 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 obtain a silica hydrogel, which is then subjected to water adjustment and classified. More specifically, first, a sodium silicate aqueous solution is pumped into a mixing nozzle at a constant flow rate, and on the other hand, sulfuric acid is pumped into the mixing nozzle at a constant flow rate. As a result, in the mixing nozzle, the sodium silicate aqueous solution and sulfuric acid are stirred and mixed to produce a silica sol, which is gelled to obtain a silica hydrogel. Here, when gelling the silica sol to obtain a silica hydrogel, the silica sol may be suspended or emulsified in a solvent, and gelled in the suspension or emulsion to obtain a silica hydrogel, or the silica sol may be sprayed to obtain a silica hydrogel.

[0023] The resulting silica hydrogel is then preferably subjected to a hydrothermal treatment, preferably at a temperature of 80° C. to 200° C. in an alkaline aqueous solution having a pH of 8.0 to 9.5. The silica hydrogel that has been appropriately subjected to hydrothermal treatment can be made into component (A) by adjusting the water content. In carrying out such water content adjustment, a box-type dryer, a rotary dryer, a fluidized bed dryer, or an airflow dryer may be used. The water content may be adjusted under conditions of a temperature of 40 to 300°C and a treatment time of 1 second to 60 minutes, which may vary depending on the device used. Alternatively, the water content can be adjusted by uniformly contacting the silica hydrogel with an adsorbent such as silica xerogel using a device such as a fixed container type mixer, a container rotation type mixer, or a fluid motion type mixer.

[0024] After adjusting the moisture content in this manner, the silica granules of component (A) in 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 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 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 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, so that the flavor derived from these components (B) can 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 a carbon atom of an 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 (wherein R 1 is an alkyl group, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group; and R 2 and R 3 each independently represents a hydrogen atom, a hydroxyl group, or a methoxy group, and

[0030] 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, the substituents X having 3 or less carbon atoms, at least one of the substituents X being bonded to a carbon atom on the benzene ring via a carbon bond, and at least one of the substituents X having 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 that imparts an anise-like odor, and its content can vary depending on the desired flavor, but is preferably 0.0001 to 0.5 mass %, and more preferably 0.0004 to 0.24 mass %, in the oral composition of the present invention. Eugenol is a flavoring that imparts a spicy, clove-like odor, and its content may vary depending on the desired flavor, but is preferably 0.00001 to 0.25 mass%, and more preferably 0.00002 to 0.14 mass%, in the oral composition of the present invention. Anisaldehyde is a fragrance that imparts a mimosa-like scent, and its content can vary depending on the desired flavor, but is preferably 0.0001 to 0.1 mass %, and more preferably 0.0003 to 0.06 mass %, in the oral composition of the present invention. Cinnamic aldehyde is a flavoring that imparts a balsamic scent, and its content can vary depending on the desired flavor, but is preferably 0.000001 to 0.05 mass%, and more preferably 0.000002 to 0.03 mass%, in the oral composition of the present invention. Thymol is a flavoring that imparts a spicy thyme-like aroma, and its content may vary depending on the desired flavor, but is preferably 0.00005 to 0.2 mass %, and more preferably 0.0001 to 0.1 mass %, in the oral composition of the present invention.

[0033] From the viewpoint of effectively achieving good flavor development, 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, even 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, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The content of component (B) in the oral composition of the present invention is preferably 0.0001 mass% or more and 1 mass% or less in total, more preferably 0.0002 to 0.8 mass%, even more preferably 0.0005 to 0.5 mass%, still more preferably 0.005 to 0.3 mass%, and even more preferably 0.008 to 0.2 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, preferably 10,000 or less, more preferably 5,000 or less, and still more preferably 1,000 or less, from the viewpoint of effectively exerting the flavor due to component (B) and effectively achieving both the provision of a comfortable usability 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 still more preferably 500 to 1,000.

[0035] The oral composition of the present invention contains water. Therefore, the total water content (W) contained 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 etc. contained in the oral composition, but also the water contained in each of the components contained in the oral composition, i.e., the water contained in the above-mentioned component (A). By adjusting the total water content contained in the oral composition while maintaining a specific mass ratio between the component (A) described below, it is possible to effectively achieve both the provision of a comfortable feeling of use by the component (A) and the development of a good flavor.

[0036] The total water content (W) contained in the oral cavity 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, even more preferably 33% by mass or more, and even 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, even 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 cavity 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, even more preferably 33 to 52% by mass, and even more preferably 35 to 50% by mass.

[0037] The total water content (W) contained in the oral composition of the present invention can be calculated from the amount of water contained in the composition, such as purified water, and the amount of water contained in the composition, such as the above-mentioned component (A), but can also be measured, for example, with a Karl Fischer moisture meter. As the Karl Fischer moisture meter, for example, a trace water meter (manufactured by Hiranuma Sangyo Co., Ltd.) can be used. 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 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, 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, from the viewpoint of effectively achieving both a comfortable feeling of use and a good flavor, particularly from the viewpoint of effectively suppressing the occurrence of an unwanted feeling. 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 still more preferably 5 to 7.

[0039] The mass ratio ((W) / (B)) of the total water content (W) to the content of component (B) contained 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, preferably 10000 or less, more preferably 8000 or less, more preferably 6000 or less, and even more preferably 4850 or less, from the viewpoint of effectively and efficiently exerting a good flavor while providing a comfortable feeling of use. The mass ratio ((W) / (B)) of the total water content (W) to the content of component (B) contained in the oral composition of the present invention is preferably 100 to 10000, more preferably 200 to 8000, even more preferably 500 to 6000, even more preferably 1000 to 4850, and even more preferably 2500 to 4850.

[0040] From the viewpoint of ensuring good storage stability and effectively achieving both a comfortable feel in use and good flavor development, it is preferable that the oral composition of the present invention further contains carboxymethylcellulose or a salt thereof (D). The content of component (D) in the oral cavity 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, preferably 4% by mass or less, more preferably 3% by mass or less, even more preferably 2% by mass or less. The content of component (D) in the oral cavity composition of the present invention is preferably 0.5 to 4, more preferably 0.8 to 3% by mass, even more preferably 1 to 2% by mass.

[0041] From the viewpoint of effectively achieving both a pleasant usability 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 even 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] The oral composition of the present invention may contain abrasive silica having an oil absorption of 50 to 150 mL / 100 g in order to more fully exert the stain removing ability. 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] The oral composition of the present invention may contain, in addition to the above-mentioned components, appropriate components that do not impair the effects of the present invention, such as fragrances other than the above-mentioned 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 Fragrances" edited by Nakajima Mototaka, Sangyo Tosho (first edition, 1995), 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; and pigments. EXAMPLES

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

[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. That is, first, an aqueous solution of sodium silicate was pumped into a mixing nozzle at a constant flow rate, and on the other hand, sulfuric acid was pumped into the mixing nozzle at a constant flow rate. As a result, a silica sol was generated by the aqueous solution of sodium silicate and sulfuric acid stirred and mixed in the mixing nozzle, and the silica sol was gelled to obtain a silica hydrogel. Next, the water content of the silica hydrogel was adjusted and classified to obtain silica granules X. The moisture content of silica granule 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 Granule 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 spray-dried to obtain silica granules Y (silica content: 94% by mass, cellulose content: 5% by mass, sodium hydroxide content: 1% by mass). The moisture 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 obtained oral composition was placed on a toothbrush in an amount of 1 g, and the subject brushed their teeth for 1 minute. The feeling of use (granular feeling and unwanted feeling) and flavor in the oral cavity from the start to the end of the toothbrushing were evaluated by four expert panelists according to the following criteria, and the average values ​​were calculated. In addition, the lower the values ​​for all evaluation items, the more comfortable the feel in use is with an excellent granular feel and with reduced unwanted tactile feel, while also effectively bringing out the flavor.

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

[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 aroma spreading. 2: Feel the spread of aroma and flavor 3: I feel a slight spread of aroma and flavor. 4: I don't feel much flavor.

[0052] [Table 1]

[0053] [Table 2]

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

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 disintegration strength of component (A) is 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 carboxymethylcellulose 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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