Composition, substrate, aromatherapy product, and tobacco product

Abstract

A composition, a base material, an aromatherapy product, and a tobacco product, the composition containing an aroma glycoside and a weakly basic compound in an amount of at least 0.1mass% relative to the total amount of the aroma glycoside.

Description

Compositions, base materials, aromatherapy products, and tobacco products

[0001] This disclosure relates to compositions, substrates, aromatherapy products, and tobacco products.

[0002] Conventionally, heat-releasing fragrances are known. Heat-releasing fragrances are fragrance precursors that release fragrance in response to temperature changes and are widely used in fields such as food, cosmetics, and daily necessities. As fragrance precursors, for example, fragrance glycosides, in which the hydroxyl groups of fragrance compounds are sugar-modified, are frequently used.

[0003] As for flavor glycosides, for example, there are known flavor glycosides in which the molecular weight is increased by sugar modification of the flavor compound, thereby suppressing volatility at room temperature. In such flavor glycosides, the sugar modification of the flavor compound is cleaved by heating, and the flavor is released in a thermal response. There are also known flavor glycosides in which the sugar modification of the flavor compound is cleaved in an acid response by the action of an acid catalyst, and the flavor is released. Furthermore, there are also known flavor glycosides in which the sugar is broken down by the metabolism of microorganisms when contacted with microorganisms, and the flavor is released (see, for example, Japanese Patent Publication No. 6960258).

[0004] Conventional fragrance glycosides that release fragrances in a thermal response have the problem of limited applications because they require heating at high temperatures of 200°C or higher to cleave the sugar modification of the fragrance compound. Fragrance glycosides that release fragrances in an acid response involve the use of relatively harmful chemicals, leaving safety concerns unresolved. Furthermore, because the sugar modification of acid-responsive fragrance glycosides is cleaved by the action of an acid catalyst, they must be mixed with an acid catalyst before use, making them difficult to utilize. Fragrance glycosides that release fragrances using microorganisms also require mixing with microorganisms before use, making them difficult to utilize as well. Moreover, because they utilize microorganisms, safety concerns (specifically, hygiene concerns) remain unresolved.

[0005] This disclosure has been made in view of the above circumstances. The problem that the embodiments of this disclosure aim to solve is to provide compositions, base materials, aromatherapy products, and tobacco products that can release fragrances at lower temperatures and more safely than conventional methods.

[0006] The following embodiments are specific means for solving the above problems: <1> A composition comprising a flavor glycoside and a weakly basic compound in an amount of 0.1% by mass or more relative to the total amount of the flavor glycoside. <2> The composition according to <1>, wherein the weakly basic compound has a pKa of 2.0 to 7.5 for its conjugate acid in water at 25°C. <3> The composition according to <2>, wherein the weakly basic compound is an alkali metal salt of an organic acid or an alkali metal salt of an inorganic acid. <4> The composition according to <2>, wherein the weakly basic compound is an alkali metal salt of an organic acid. <5> The composition according to any one of <1> to <4>, wherein the weakly basic compound comprises at least one selected from the group consisting of disodium hydrogen phosphate, trisodium phosphate, trisodium citrate, sodium acetate, potassium acetate, sodium ascorbate, potassium tartrate, and tetrasodium pyrophosphate. <6> The composition according to any one of <1> to <5>, wherein the flavor glycoside has a structure represented by the following formula (1).

[0007]

[0008] In formula (1), R １ R represents a residue obtained by removing one hydroxyl group from a fragrance compound. ２ , R ３ , R ４ , and R ５ Each of these independently represents a hydrogen atom, an acyl group, or a residue obtained by removing one hydroxyl group from a sugar compound.

[0009] <7> The composition according to any one of <1> to <6>, wherein the above-mentioned fragrance glycoside is at least one selected from the group consisting of ethyl vanillin glucoside, vanillin glucoside, eugenol glucoside, glucosyl hesperidin, menthol glucoside, borneol glucoside, and linalool glucoside. <8> A base material to which the composition according to any one of <1> to <7> is applied. <9> An aromatherapy product containing the composition according to any one of <1> to <7>. <10> A tobacco product using the composition according to any one of <1> to <7>.

[0010] Embodiments of this disclosure provide compositions, substrates, aromatherapy products, and tobacco products that can release fragrances at lower temperatures and more safely than conventional methods.

[0011] The following describes in detail an example of an embodiment of the composition relating to this disclosure. The description of the requirements below may be based on a typical embodiment of this disclosure, but this disclosure is not limited to such embodiments and may be implemented with appropriate modifications within the scope of the purpose of this disclosure.

[0012] In this disclosure, a numerical range indicated using "~" means a range that includes the numerical values ​​before and after "~" as the lower and upper limits, respectively. In numerical ranges described in stages in this disclosure, the upper or lower limit stated in one numerical range may be replaced with the upper or lower limit of another numerical range described in stages. Furthermore, in numerical ranges described in this disclosure, the upper or lower limit stated in one numerical range may be replaced with the values ​​shown in the examples.

[0013] In this disclosure, the amount of each component in a composition means the total amount of multiple substances present in the composition if there are multiple substances corresponding to each component, unless otherwise specified.

[0014] In this disclosure, a combination of two or more preferred embodiments is a more preferred embodiment.

[0015] In this disclosure, "solids" means the components excluding the solvent, and "solvent" means water and organic solvents.

[0016] In this disclosure, "mass%" and "weight%" are synonymous, and "parts by mass" and "parts by weight" are synonymous.

[0017] In this disclosure, "fragrance" and "fragrance compound" are synonymous.

[0018] [Composition] The composition according to the present disclosure contains a glycoside of a fragrance and a weakly basic compound of 0.1% by mass or more based on the total amount of the glycoside of the fragrance. The composition according to the present disclosure has been made by finding that the weakly basic compound promotes the thermal decomposition of the glycoside of the fragrance. In the composition according to the present disclosure, the weakly basic compound promotes the thermal decomposition of the glycoside of the fragrance, specifically, the thermal cleavage of the sugar modification of the fragrance compound, so that the fragrance can be released at a lower temperature than before. According to the weakly basic compound, the thermal decomposition temperature of the glycoside of the fragrance can be lowered by, for example, 20°C or more. Further, the composition according to the present disclosure does not require an acid catalyst for releasing the fragrance like conventional glycosides of fragrances, so that the fragrance can be safely released. Further, since the fragrance is not released only by coexisting the glycoside of the fragrance and the weakly basic compound, it can be handled as a composition and is easy to use.

[0019] <Glycoside of Fragrance> The composition according to the present disclosure contains a glycoside of a fragrance. The type of the glycoside of the fragrance is not particularly limited. The glycoside of the fragrance may be a glycoside of a natural fragrance compound or a glycoside of a synthetic fragrance compound. As the glycoside of the fragrance, conventionally known glycosides of fragrances can be appropriately selected and used.

[0020] The glycoside of the fragrance preferably has a structure represented by the following formula (1).

[0021]

[0022] In formula (1), R １ represents a residue obtained by removing one hydroxyl group from a fragrance compound. The type of the fragrance compound is not particularly limited. The fragrance compound may be a natural fragrance compound or a synthetic fragrance compound. Examples of the fragrance compound include conventionally known fragrance compounds. The fragrance compound is preferably ethyl vanillin, vanillin, eugenol, hesperetin, menthol, borneol, or linalool, and more preferably ethyl vanillin or menthol.

[0023] In formula (1), R ２ , R ３ , R ４ , and R ５Each of these independently represents a hydrogen atom, an acyl group, or a residue obtained by removing one hydroxyl group from a sugar compound. ２ , R ３ , R ４ , and R ５ It is preferable that all of them are hydrogen atoms. ２ , R ３ , R ４ , and R ５ Examples of acyl groups represented include acetyl, propionyl, butyryl, pivaloyl, stearoyl, and oleoyl groups. The sugar compound may be a monosaccharide, disaccharide, or polysaccharide, but from a cost viewpoint, for example, it is preferable to be a monosaccharide. Examples of monosaccharides include glucose, mannose, galactose, and fructose. The sugar compound is preferably glucose.

[0024] The flavor glycoside is preferably at least one selected from the group consisting of ethyl vanillin glucoside, vanillin glucoside, eugenol glucoside, glucosyl hesperidin, menthol glucoside, borneol glucoside, and linalool glucoside, more preferably at least one selected from ethyl vanillin glucoside and menthol glucoside, and even more preferably ethyl vanillin glucoside.

[0025] The composition relating to this disclosure may contain one or more flavor glycosides.

[0026] The content of the flavor glycoside in the composition according to this disclosure is not particularly limited, and may be, for example, 0.0001% to 10% by mass, 0.0001% to 1% by mass, or 0.0001% to 0.5% by mass, based on the total amount of the composition.

[0027] <Weak Basic Compound> The composition according to this disclosure contains a weak basic compound in an amount of 0.1% by mass or more relative to the total amount of the flavor glycoside. The weak basic compound can promote the thermal decomposition of the flavor glycoside.

[0028] From the viewpoint of achieving both storage stability and thermal decomposition properties of the composition, the weakly basic compound preferably has a pKa (acid dissociation constant) of the conjugate acid in water at 25°C of 2.0 to 7.5, more preferably 3.5 to 7.5, and even more preferably 4.5 to 6.5.

[0029] In this disclosure, the pKa of the conjugate acid of a weakly basic compound in water at 25°C is measured by potentiometric titration.

[0030] The type of weak basic compound is not particularly limited. The weak basic compound may be an organic acid salt or an inorganic acid salt, but it is preferably an organic acid salt. When the weak basic compound is an organic acid salt, for example, when the composition contains a medium other than water (e.g., an organic solvent and a thermoplastic resin), the compatibility with the medium can be controlled by changing the structure of the organic acid. The type of salt is not particularly limited, but for example, it is preferably an alkali metal salt. The weak basic compound is preferably an alkali metal salt of an organic acid or an alkali metal salt of an inorganic acid, and more preferably an alkali metal salt of an organic acid.

[0031] The weakly basic compound is preferably, for example, one in which the pKa of the conjugate acid of the weakly basic compound in water at 25°C is 2.0 to 7.5 and it is an alkali metal salt of an organic acid or an alkali metal salt of an inorganic acid, and more preferably one in which the pKa of the conjugate acid of the weakly basic compound in water at 25°C is 2.0 to 7.5 and it is an alkali metal salt of an organic acid.

[0032] Examples of weakly basic compounds include disodium hydrogen phosphate, trisodium phosphate, trisodium citrate, sodium acetate, potassium acetate, sodium ascorbate, potassium tartrate, and tetrasodium pyrophosphate. From the viewpoint of reducing the thermal decomposition start temperature of the flavor glycosides, the weakly basic compound preferably contains at least one selected from the group consisting of disodium hydrogen phosphate, trisodium phosphate, trisodium citrate, sodium acetate, potassium acetate, sodium ascorbate, potassium tartrate, and tetrasodium pyrophosphate; more preferably at least one selected from the group consisting of disodium hydrogen phosphate, trisodium phosphate, trisodium citrate, sodium acetate, potassium acetate, sodium ascorbate, potassium tartrate, and tetrasodium pyrophosphate; even more preferably at least one selected from the group consisting of disodium hydrogen phosphate, trisodium citrate, sodium acetate, potassium acetate, and sodium ascorbate; and particularly preferably at least one selected from sodium acetate and potassium acetate.

[0033] The composition relating to this disclosure may contain one weakly basic compound alone, or it may contain two or more weakly basic compounds.

[0034] In the composition according to the present disclosure, the content of the weakly basic compound is 0.1% by mass or more, preferably 0.2% by mass or more, more preferably 0.5% by mass or more, still more preferably 1% by mass or more, and particularly preferably 2% by mass or more with respect to the total amount of the glycoside perfume. When the content of the weakly basic compound in the composition according to the present disclosure is 0.1% by mass or more with respect to the total amount of the glycoside perfume, it becomes possible to reduce the thermal decomposition start temperature of the glycoside perfume by the weakly basic compound. The upper limit of the content of the weakly basic compound in the composition according to the present disclosure is not particularly limited. For example, from the viewpoints of being unlikely to damage the scent of the perfume and being able to contain a sufficient amount of the glycoside perfume in the composition, it is preferably 10% by mass or less with respect to the total amount of the glycoside perfume. In one aspect, the content of the weakly basic compound in the composition according to the present disclosure may be 0.1% to 10% by mass, 0.2% to 10% by mass, 0.5% to 10% by mass, 1% to 10% by mass, or 2% to 10% by mass with respect to the total amount of the glycoside perfume.

[0035] <Solvent> The composition according to the present disclosure preferably further contains a solvent. The solvent is not particularly limited, but for example, water, an aqueous medium other than water, or a mixed solvent thereof is preferable.

[0036] Water is not particularly limited, but for example, distilled water, ion-exchanged water, or pure water is preferable in terms of having few impurities.

[0037] Examples of the aqueous medium other than water include water-miscible organic solvents. Examples of the water-miscible organic solvents include monohydric alcohol compounds such as methanol, ethanol, propanol, and isopropanol; polyhydric alcohol compounds such as glycerin, ethylene glycol, diethylene glycol, and propylene glycol; glycol derivatives such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether, and dipropylene glycol monomethyl ether; and other organic solvents.

[0038] When the composition according to the present disclosure contains an aqueous medium other than water as a solvent, it may contain one kind of the aqueous medium other than water alone, or may contain two or more kinds thereof.

[0039] When the solvent is a mixed solvent of water and an aqueous medium other than water, the mixing ratio of water and the aqueous medium other than water is not particularly limited, and can be appropriately set according to the purpose, for example.

[0040] When the composition according to the present disclosure contains a solvent, the content of the solvent is not particularly limited, and may be, for example, 50% by mass to 99.9% by mass, 70% by mass to 99.9% by mass, or 90% by mass to 99.9% by mass based on the total amount of the composition.

[0041] <Other Components> The composition according to the present disclosure may contain components other than the aforementioned components (so-called other components) as necessary, as long as the effects thereof are not impaired. Examples of the other components include various additives such as vegetable oil, mineral oil, powdered cellulose, stearic acid, and paraffin wax.

[0042] <<Applications>> The composition according to this disclosure can be suitably used to impart the function of releasing fragrance upon heating to articles such as food, daily necessities, and luxury goods. Articles using the composition according to this disclosure can release fragrance at a lower temperature and more safely than conventional methods. Furthermore, the composition according to this disclosure can be suitably used as a raw material for cosmetics. The composition according to this disclosure can be used as a raw material for incense by including, for example, powdered cellulose in addition to fragrance glycosides and weak basic compounds, and can be used as a raw material for aroma candles by including, for example, stearic acid, paraffin wax, etc. Furthermore, the composition according to this disclosure can be suitably used as a cosmetic. The composition according to this disclosure can be used as an aroma oil by including, for example, solvents such as ethanol and propylene glycol, and oils such as vegetable oil and mineral oil in addition to fragrance glycosides and weak basic compounds. Furthermore, the composition according to this disclosure can be suitably used as a luxury item. The composition relating to this disclosure can be used as an e-cigarette liquid by including, for example, a solvent such as glycerin or propylene glycol in addition to a flavoring glycoside and a weakly basic compound.

[0043] <<Method for preparing the composition>> The method for preparing the composition according to this disclosure is not particularly limited. The composition according to this disclosure can be prepared by mixing a flavor glycoside, a weakly basic compound, and an optional component such as a solvent or other components. The method for mixing each component is not particularly limited, and for example, mixing by stirring is one example.

[0044] [Base Material] The base material relating to this disclosure is a base material to which the aforementioned composition relating to this disclosure has been applied. Because the base material relating to this disclosure is a base material to which the composition relating to this disclosure has been applied, the fragrance is released at a lower temperature and more safely than in conventional methods.

[0045] The substrates relating to this disclosure are not particularly limited in terms of material, size, shape, etc., as long as they are substrates to which the composition relating to this disclosure has been applied. Examples of substrates relating to this disclosure include paper, plastic (e.g., thermoplastic plastic), and plant leaves to which the composition relating to this disclosure has been applied. Paper to which the composition relating to this disclosure has been applied can be used, for example, as a material for cigarettes. Plant leaves to which the composition relating to this disclosure has been applied can be used, for example, as raw materials for cigarettes and heated tobacco products.

[0046] The substrates relating to this disclosure can be manufactured by applying the composition relating to this disclosure to a substrate that is subject to the application of the composition relating to this disclosure. The method of applying the composition relating to this disclosure is not particularly limited and includes known methods such as coating and immersion methods.

[0047] [Aromatherapy Products] The aromatherapy products relating to this disclosure are aromatherapy products that include the composition relating to this disclosure as described above. Because the aromatherapy products relating to this disclosure include the composition relating to this disclosure, the fragrance is released at a lower temperature and more safely than conventional methods.

[0048] Aromatherapy products are not particularly limited as long as they have a mechanism for releasing fragrances through heating. Examples of aromatherapy products include aromatherapy candles, incense, and aromatherapy oils.

[0049] [Tobacco Products] The tobacco products relating to this disclosure are tobacco products using the composition relating to this disclosure as described above. Because the tobacco products relating to this disclosure are tobacco products using the composition relating to this disclosure, the flavor is released at a lower temperature and more safely than conventional products.

[0050] Tobacco products include, for example, cigarettes, cigars, e-cigarettes, and heated tobacco products.

[0051] The compositions relating to this disclosure will be described in more detail below with reference to examples. However, the compositions relating to this disclosure are not limited to the following examples, unless they exceed the spirit of the disclosure.

[0052] [Preparation of Composition] <Example 1> Composition of Example 1 was obtained by adding 0.02 mL of a 1% by mass aqueous solution of sodium acetate, prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, to 10 mL of the solution and mixing it with sodium acetate [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a weakly basic compound, in pure water.

[0053] <Example 2> Composition of Example 2 was obtained by adding 0.1 mL of a 1% by mass aqueous solution of sodium acetate, prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, to 10 mL of the solution, and mixing it with sodium acetate [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a weakly basic compound, in pure water.

[0054] <Example 3> A composition of Example 3 was obtained by adding 0.2 mL of a 1% by mass aqueous solution of sodium acetate, prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, to 10 mL of the solution, and mixing it with sodium acetate [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a weakly basic compound, in pure water.

[0055] <Example 4> Composition for Example 4 was obtained by adding 1 mL of a 1% by mass aqueous solution of sodium acetate, prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, to 10 mL of the solution and mixing it with sodium acetate [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a weakly basic compound, in pure water.

[0056] <Comparative Example 1> A composition of Comparative Example 1 was obtained by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a flavor glycoside, in 10 mL of 50% by mass aqueous ethanol, and then adding 0.02 mL of pure water to 10 mL of the prepared solution and mixing.

[0057] <Example 5> The composition of Example 5 was obtained by adding 0.2 mL of a 1% by mass aqueous solution of trisodium citrate, prepared by dissolving trisodium citrate, a weak basic compound, in pure water to 10 mL of a solution prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, and mixing the solution. The pKa of the conjugate acid of the weak basic compound shown in Table 2 is the value measured in water at 25°C by the method described above. The same procedure was followed for Examples 6 to 8.

[0058] <Example 6> The composition of Example 6 was obtained by adding 0.2 mL of a 1% by mass aqueous solution of sodium ascorbate, prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, to 10 mL of the solution, and mixing it with sodium ascorbate [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a weakly basic compound, in pure water.

[0059] <Example 7> The composition of Example 7 was obtained by adding 0.2 mL of a 1% by mass aqueous solution of disodium hydrogen phosphate, prepared by dissolving disodium hydrogen phosphate, a weakly basic compound, in pure water to 10 mL of a solution prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, and mixing the solution.

[0060] <Example 8> The composition of Example 8 was obtained by adding 0.2 mL of a 1% by mass aqueous solution of potassium acetate, prepared by dissolving 100 mg of ethyl vanillin glucoside [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a fragrance glycoside, in 10 mL of 50% by mass aqueous ethanol, to 10 mL of the solution and mixing it with potassium acetate [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.], a weakly basic compound, in pure water.

[0061] <Example 9> The composition of Example 9 was obtained by adding 0.5 mL of a 1% by mass aqueous solution of trisodium citrate, prepared by dissolving trisodium citrate, a weakly basic compound, in pure water to 10 mL of a solution prepared by dissolving 100 mg of menthol glucoside, a flavoring glycoside, in 10 mL of 50% by mass aqueous ethanol, and mixing the mixture.

[0062] <Comparative Example 2> A composition for Comparative Example 2 was obtained by dissolving 100 mg of menthol glucoside, a flavoring glycoside, in 10 mL of 50% by mass aqueous ethanol, and then adding 0.5 mL of pure water to 10 mL of the prepared solution and mixing.

[0063] [Evaluation] 1. Measurement of the decomposition initiation temperature of flavor glycosides Each composition of Examples 1 to 9 and Comparative Examples 1 to 2 prepared above was heat-treated at 100°C for 10 minutes to evaporate the solvent, and then subjected to TG-DTA (Thermogravimetry-Differential Thermal Analysis). For TG-DTA, a differential thermogravimetric analyzer STA-7200 (model) manufactured by Hitachi High-Tech Science Corporation was used as the measuring device, and the composition was heated in air from 30°C to 500°C at a rate of 10°C / min. The temperature at which the mass loss rate of the composition exceeded 5% by mass was defined as the decomposition initiation temperature of the flavor glycosides. The results are shown in Tables 1 to 3.

[0064] 2. Measurement of Thermal Decomposition Amount of Flavoring Glycosides The mass loss of the composition from the decomposition start temperature of the flavoring glycosides up to 500°C was set as 100% by mass, and the mass loss of the composition at 200°C was calculated. The obtained value was defined as the thermal decomposition amount of the flavoring glycosides at 200°C. The results are shown in Tables 1 to 3. A higher thermal decomposition amount of flavoring glycosides indicates that more flavoring is being released.

[0065]

[0066]

[0067]

[0068] In Tables 1 to 3, a "-" in the composition column indicates that the component corresponding to that column is not included. Comparative Examples 1 and 3 in Table 2 are included for comparison with the examples in Table 2 and are the same as Comparative Examples 1 and 3 in Table 1.

[0069] As shown in Table 1, the compositions of Examples 1 to 4 showed a lower decomposition initiation temperature for the flavor glycosides and released the flavor at a lower temperature compared to the composition of Comparative Example 1. Furthermore, as shown in Table 1, it was confirmed that the higher the proportion of the weakly basic compound relative to the flavor glycosides in the compositions of Examples 1 to 4, the lower the decomposition initiation temperature for the flavor glycosides and the lower the temperature at which the flavor was released.

[0070] As shown in Table 2, the compositions of Examples 5 to 8, like the composition of Example 3, all showed a lower decomposition initiation temperature for the flavor glycosides compared to the composition of Comparative Example 1, and were confirmed to release the flavor at a lower temperature. From this, it became clear that weak basic compounds, regardless of their type, have the effect of reducing the decomposition initiation temperature of flavor glycosides.

[0071] As shown in Table 3, the composition of Example 9 showed a lower decomposition initiation temperature for the flavor glycosides compared to the composition of Comparative Example 2, and released the flavor at a lower temperature. This indicates that the effect of a weakly basic compound in reducing the decomposition initiation temperature of flavor glycosides is achieved regardless of the type of flavor glycoside.

[0072] Based on the above, it has been confirmed that the composition according to this disclosure enables the release of fragrance at lower temperatures than conventional methods. Furthermore, it has been confirmed that the composition according to this disclosure enables the safe release of fragrance without the use of acid catalysts or microorganisms during the decomposition of fragrance glycosides.

[0073] The disclosure of Japanese Patent Application No. 2024-162544, filed on 19 September 2024, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard were specifically and individually noted to be incorporated by reference.

Claims

1. A composition comprising a flavoring glycoside and a weakly basic compound in an amount of 0.1% by mass or more relative to the total amount of the flavoring glycoside.

2. The composition according to claim 1, wherein the weakly basic compound has a pKa of 2.0 to 7.5 for its conjugate acid in water at 25°C.

3. The composition according to claim 2, wherein the weakly basic compound is an alkali metal salt of an organic acid or an alkali metal salt of an inorganic acid.

4. The composition according to claim 2, wherein the weakly basic compound is an alkali metal salt of an organic acid.

5. The composition according to claim 1, wherein the weakly basic compound comprises at least one selected from the group consisting of disodium hydrogen phosphate, trisodium phosphate, trisodium citrate, sodium acetate, potassium acetate, sodium ascorbate, potassium tartrate, and tetrasodium pyrophosphate.

6. The composition according to claim 1, wherein the flavor glycoside has a structure represented by the following formula (1). In formula (1), R １ R represents a residue obtained by removing one hydroxyl group from a fragrance compound. ２ , R ３ , R ４ , and R ５ Each of these independently represents a hydrogen atom, an acyl group, or a residue obtained by removing one hydroxyl group from a sugar compound.

7. The composition according to claim 1, wherein the flavor glycoside is at least one selected from the group consisting of ethyl vanillin glucoside, vanillin glucoside, eugenol glucoside, glucosyl hesperidin, menthol glucoside, borneol glucoside, and linalool glucoside.

8. A substrate to which the composition according to any one of claims 1 to 7 is applied.

9. An aromatherapy product comprising the composition according to any one of claims 1 to 7.

10. A tobacco product using the composition described in any one of claims 1 to 7.

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