A preparation method of cooling and fragrance-imparting particles and its products and applications

Abstract

The present invention provides a preparation method of cooling and flavoring particles, and its products and applications. The cooling and flavoring particles prepared by the present invention are used for heating cigarettes, and not only have the effect of reducing the smoke temperature, but also have the performance of sustained release of aroma components. The attapulgite-based cooling and flavoring particle material prepared by the method of the present invention can be used to prepare flavoring particles with various style characteristics, and the performance of sustained release of aroma components is good. When used in heating cigarettes, flexible production of heating cigarettes with characteristic aroma components can be realized. In addition, the present invention uses natural mineral materials, the raw materials are easy to obtain, the cost is low, and the preparation method is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette flavoring materials, and particularly relates to a preparation method of cooling and flavoring particles, and a product and application thereof. Background Art

[0002] Heated cigarettes are an important form of new tobacco products, which mainly release aerosols by heating and distilling tobacco materials (below 500°C). Since heated cigarettes are short, the inlet smoke temperature is too hot, so the smoke generated by the smoking section needs to be cooled. The structure of heated cigarettes can be divided into three parts: the smoking section, the cooling section, and the filter section. Therefore, in order to effectively reduce the temperature of heated cigarette smoke, embossed and gathered PLA films, fiber woven bundles with cooling effects, embossed and gathered aluminum foil composite paper, cooling cavity firmware and cigarette punching are more commonly used to cool down.

[0003] CN215422779U provides a binary composite cooling filter rod and a heated cigarette, the filter rod comprises a acetate fiber bundle section located near the lip end and an empty tube section near the tobacco end, the acetate fiber bundle section and the empty tube section have the same outer diameter and are butted front and back; the empty tube section is composed of a circumferential tube wall and a hollow channel formed by the circumferential tube wall, the circumferential tube wall is made of polymer material; the outer wall uses a filter tip punching technology to introduce low-temperature ambient air to further reduce the smoke temperature; at the same time, the acetate fiber bundle section uses a high single denier bundle, and the single wire density is greater than 10.0dtex. CN212994378U provides a heated cigarette using a venturi-type hollow filter rod, the heated cigarette is composed of tobacco material and a hollow filter rod with a venturi structure, along the axial direction of the hollow filter rod, the structure of the hollow cavity presents a periodic continuous change of cavity diameter, forming a series combination of a series of thick and thin cavities. When the smoke generated by high-temperature heating of tobacco material passes through the cavity, the flow rate of the smoke fluid changes due to the change in the cavity structure. The fluid state is forced to change from laminar flow to turbulent flow, which improves the heat conduction efficiency and thus has a better heat transfer and cooling effect.

[0004] CN113197333A provides a preparation method of a cooling element for heating cigarettes, comprising: dissolving polyethylene glycol and at least one of cellulose acetate, polyvinyl alcohol, gelatin and chitosan in a certain mass ratio, forming a film of the mixed solution and drying it to obtain a phase change film; mixing soy protein isolate and water in a certain mass ratio, adding inorganic nanoparticles and glue to obtain an adhesive; placing the phase change film in the middle of two layers of aluminum foil, coating the adhesive between the phase change film and the aluminum foil, hot pressing to obtain a composite material; embossing and gathering and wrapping the composite material, and cutting it into sections. The present invention adopts a sandwich structure to place the phase change film in the middle of the cooling element, which can avoid contact between smoke and liquid polyethylene glycol, thereby avoiding the negative impact of polyethylene glycol on the smoke suction quality. At the same time, the metal aluminum foil improves the thermal conductivity of the cooling element, is conducive to the rapid transfer of heat, and improves the cooling efficiency.

[0005] However, although the above technical means can achieve smoke cooling, their functions are relatively simple. The smoke temperature generated by the heated cigarette smoking section can reach 200°C, which is a good heat source. Although the existing technology uses plant particles to absorb flavors and load them into the cooling cavity firmware, and fills the fragrance wire into the embossed and gathered PLA film to achieve smoke cooling and fragrance enhancement, the flavors absorbed by plant particles or fragrance wires are easy to volatilize and cannot achieve the function of slow release of fragrance. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing cooling and flavoring particles, as well as its products and applications. The cooling and flavoring particles prepared by the method can achieve the purpose of lowering the smoke temperature, avoiding the effect of excessively high smoke temperature on taste, and achieving sustained release of particle smoke aroma.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a method for preparing cooling and fragrance-imparting particles, the method comprising the following steps:

[0009] (1) activating attapulgite, and then crushing and sieving to obtain activated attapulgite powder;

[0010] (2) mixing the essence with the activated attapulgite powder obtained in step (1), and then grinding the mixture;

[0011] (3) mixing the binder with the material ground in step (2) to obtain a mixed material;

[0012] (4) stirring and mixing the mixture of step (3) and anhydrous ethanol, air-drying and granulating after uniform mixing to obtain composite particles;

[0013] (5) The composite particles of step (4) are coated to obtain the temperature-reducing and fragrance-imparting particles.

[0014] The preparation method of the present invention first activates the attapulgite powder to improve the adsorption performance of the attapulgite powder on the essence; then the attapulgite composite particles adsorbing the essence are coated to reduce the volatility of the essence in the composite particles, and achieve the sustained release performance of the essence in the composite particles under heating. In addition, in the present invention, the solvent used is mainly anhydrous ethanol, so that the composite particles and the coated functional particles can be air-dried at low temperature, reducing the heat loss of the essence and fragrance.

[0015] The cooling and aroma-imparting particles prepared by the method of the present invention are used for heating cigarettes, and not only have the effect of reducing the smoke temperature, but also have the performance of sustained release of aroma components. The attapulgite-based cooling and aroma-imparting particle material prepared by the method of the present invention can be used to prepare aroma-imparting particles with various style characteristics, and the performance of sustained release of aroma components is good. When used in heating cigarettes, flexible production of heating cigarettes with characteristic aroma components can be realized. In addition, the present invention uses natural mineral materials, the raw materials are easy to obtain, the cost is low, and the preparation method is simple.

[0016] Preferably, the activation treatment step in step (1) comprises:

[0017] (a) soaking the attapulgite in acid;

[0018] (b) washing the attapulgite treated in step (a) with water;

[0019] (c) filtering and drying the attapulgite washed in step (b) to obtain the activated attapulgite.

[0020] In the present invention, after the attapulgite is treated with acid and then washed with water, the fiber bundles of the attapulgite can be depolymerized, the pore volume of the attapulgite is increased, the surface area of ​​the attapulgite is increased, and more pores and broken bonds of the attapulgite are exposed, thereby improving the adsorption of the attapulgite.

[0021] Preferably, the acid in step (a) comprises hydrochloric acid solution or sulfuric acid solution;

[0022] Preferably, the concentration of the hydrochloric acid solution is 5-15%, for example, 6%, 8%, 10%, 12% or 14%.

[0023] Preferably, the concentration of the sulfuric acid solution is 5-15%, for example, 6%, 8%, 10%, 12% or 14%.

[0024] Preferably, the soaking time in step (a) is 1-3 h, for example, it can be 1.2 h, 1.5 h, 1.8 h, 2 h, 2.2 h, 2.5 h or 2.8 h.

[0025] Preferably, the pH of the water washed in step (b) is 6-7, for example, 6.1, 6.3, 6.5, 6.7 or 6.9.

[0026] Preferably, the drying temperature in step (c) is 110-130°C, for example, 112°C, 115°C, 118°C, 120°C, 122°C, 125°C or 128°C, and the drying time is 1-2h, for example, 1.1h, 1.3h, 1.5h, 1.7h or 1.9h, etc.

[0027] Preferably, the mesh size of the sieving in step (1) is 100-200 mesh, for example, it can be 110 mesh, 130 mesh, 150 mesh, 170 mesh or 190 mesh, etc.

[0028] Preferably, the flavor in step (2) includes any one of blueberry flavor, mint flavor, sweet orange flavor or rose flavor, or a combination of at least two of them.

[0029] Preferably, the essence needs to be dissolved in a solvent before being mixed with the activated attapulgite powder.

[0030] Preferably, the solvent is propylene glycol and / or anhydrous ethanol.

[0031] Preferably, the liquid-to-solvent ratio of the flavor is 1:(10-20) g / mL, for example, 1:11 g / mL, 1:13 g / mL, 1:15 g / mL, 1:17 g / mL or 1:19 g / mL.

[0032] Preferably, the mass ratio of the essence to the activated attapulgite powder in step (2) is 1:(1-3), for example, it can be 1:1.1, 1:1.3, 1:1.5, 1:1.7, 1:2.0, 1:2.1, 1:2.3, 1:2.5, 1:2.7 or 1:2.9, etc.

[0033] Preferably, the stirring and mixing time in step (2) is 0.5-1 h, for example, 0.6 h, 0.7 h, 0.8 h, 0.9 h or 1 h.

[0034] Preferably, the grinding in step (2) is performed until the material fineness reaches less than 50 μm.

[0035] Preferably, the binder in step (3) comprises hydroxypropyl cellulose and / or polyvinyl pyrrolidone.

[0036] Preferably, the mass ratio of the binder to the material ground in step (2) is 1:(20-30), for example, it can be 1:21, 1:23, 1:25, 1:27 or 1:29.

[0037] Preferably, the stirring and mixing time in step (3) is 10-60 min, for example, it can be 15 min, 20 min, 25 min, 30 min, 35 min, 40 min, 45 min, 50 min or 55 min.

[0038] Preferably, the mass ratio of the mixed material to anhydrous ethanol in step (4) is 1:(1-10), for example, it can be 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9 or 1:10, etc.

[0039] Preferably, the stirring and mixing time in step (4) is 0.5-1 h, for example, 0.6 h, 0.7 h, 0.8 h, 0.9 h or 1 h.

[0040] Preferably, the air-drying temperature in step (4) is 30-40°C, for example, 31°C, 33°C, 35°C, 37°C or 39°C, and the time is 0.5-3h, for example, 0.8h, 1h, 1.2h, 1.5h, 1.8h, 2h, 2.1h, 2.3h, 2.5h, 2.7h or 2.9h, etc.

[0041] Preferably, the coating material in step (5) is any one of hydroxypropyl cellulose, shellac flakes, and polyvinyl pyrrolidone, or a combination of at least two thereof;

[0042] Preferably, the coating material is dissolved in anhydrous ethanol;

[0043] Preferably, the mass ratio of the coating material to anhydrous ethanol is 1:(15-25), for example, it can be 1:16, 1:18, 1:20, 1:22 or 1:24, etc.

[0044] Specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0045] In a second aspect, the present invention provides a cooling and fragrance-imparting granule, wherein the cooling and fragrance-imparting granule is prepared by the method for preparing the cooling and fragrance-imparting granule as described in the first aspect.

[0046] The third invention is to provide an application of the cooling and flavoring particles as described in the second aspect in the preparation of heated cigarettes.

[0047] The cooling and aroma-imparting particles of the present invention are used in the cooling section of heated cigarettes. Adding the cooling and aroma-imparting particles to the heated cigarettes can effectively reduce the smoke temperature of the cigarettes and achieve the function of sustained release of aroma.

[0048] Specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] (1) The attapulgite-based cooling and aroma-imparting particles prepared by the present invention are used for heated cigarettes, which not only have the effect of reducing the smoke temperature, but also have the performance of sustained release of aroma components. When used in heated cigarettes, the flexible production of heated cigarettes with characteristic aroma components can be realized.

[0051] (2) The raw materials used in the preparation method of the present invention are natural mineral materials, which are easily available and low in cost. The preparation method is simple and easy to apply industrially. DETAILED DESCRIPTION

[0052] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only used to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0053] Some of the raw materials used in the following examples come from the following sources:

[0054] Rose essence, blueberry essence, and sweet orange flavor were all purchased from Hebei Yuanchuang Biotechnology Co., Ltd.; hydroxypropyl cellulose was purchased from Aladdin Reagent; polyvinyl pyrrolidone was purchased from Sinopharm Reagent Company; and shellac flakes were purchased from Jinan Xiangfa Chemical Technology Co., Ltd.

[0055] The rest of the raw materials can be used as long as they are purchased from regular dealers.

[0056] Example 1

[0057] This embodiment provides a method for preparing temperature-reducing and fragrance-imparting particles, the preparation method comprising:

[0058] (1) soaking the attapulgite in 8% sulfuric acid for 1 hour, then washing with water until the pH value is 6.5, filtering and drying at 120° C. for 1.5 hours, crushing and passing through a 100-mesh sieve to obtain activated attapulgite powder;

[0059] (2) dissolving the sweet orange essence in anhydrous ethanol, wherein the solid-liquid ratio of the essence to anhydrous ethanol is 1:15 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 45 minutes, and grinding evenly to a fineness of 40 μm, wherein the mass ratio of the essence to the activated attapulgite powder is 1:2;

[0060] (3) mixing hydroxypropyl cellulose and the ground material in step (2) at a mass ratio of 1:25 for 30 minutes to obtain a mixed material;

[0061] (4) The mixture of step (3) and anhydrous ethanol were stirred and mixed at a mass ratio of 1:6 for 50 minutes, and after being uniformly mixed, they were air-dried at 40° C. for 2 hours and granulated to obtain composite particles;

[0062] (5) Mixing hydroxypropyl cellulose and anhydrous ethanol at a mass ratio of 1:20 to obtain a hydroxypropyl cellulose ethanol solution, and then coating the composite particles of step (4) with the hydroxypropyl cellulose ethanol solution to obtain the cooling and fragrance-imparting particles.

[0063] Example 2

[0064] This embodiment provides a method for preparing temperature-reducing and fragrance-imparting particles, the preparation method comprising:

[0065] (1) soaking the attapulgite in 6% hydrochloric acid for 2 hours, then washing with water until the pH value is 6.2, filtering and drying at 115° C. for 2 hours, and then crushing and passing through a 150-mesh sieve to obtain activated attapulgite powder;

[0066] (2) dissolving blueberry flavor in propylene glycol, wherein the solid-liquid ratio of the flavor to propylene glycol is 1:12 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 55 min, and grinding evenly to a fineness of 45 μm, wherein the mass ratio of the flavor to the activated attapulgite powder is 1:1;

[0067] (3) mixing polyvinyl pyrrolidone and the ground material obtained in step (2) at a mass ratio of 1:28 for 15 minutes to obtain a mixed material;

[0068] (4) The mixture of step (3) and anhydrous ethanol were stirred and mixed at a mass ratio of 1:3 for 40 minutes, and after being uniformly mixed, they were air-dried at 35° C. for 1 hour and granulated to obtain composite particles;

[0069] (5) Polyvinyl pyrrolidone and anhydrous ethanol are mixed in a mass ratio of 1:25 to obtain a polyvinyl pyrrolidone ethanol solution, and then the composite particles of step (4) are coated with the polyvinyl pyrrolidone ethanol solution to obtain the cooling and fragrance-imparting particles.

[0070] Example 3

[0071] This embodiment provides a method for preparing temperature-reducing and fragrance-imparting particles, the preparation method comprising:

[0072] (1) soaking the attapulgite in 13% sulfuric acid for 1 hour, then washing with water until the pH value is 6.6, filtering and drying at 125° C. for 1.3 hours, and then crushing and passing through a 180-mesh sieve to obtain activated attapulgite powder;

[0073] (2) dissolving rose essence in anhydrous ethanol, wherein the solid-liquid ratio of the essence to anhydrous ethanol is 1:18 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 40 minutes, and grinding evenly to a fineness of 38 μm, wherein the mass ratio of the essence to the activated attapulgite powder is 1:2.8;

[0074] (3) mixing hydroxypropyl cellulose and the material ground in step (2) at a mass ratio of 1:22 for 55 minutes to obtain a mixed material;

[0075] (4) The mixture of step (3) and anhydrous ethanol were stirred and mixed at a mass ratio of 1:9 for 50 minutes, and after being uniformly mixed, they were air-dried at 38° C. for 2.8 hours and granulated to obtain composite particles;

[0076] (5) Mixing shellac flakes and anhydrous ethanol in a mass ratio of 1:18 to obtain a shellac flake solution, and then coating the composite particles of step (4) with the shellac flake ethanol solution to obtain the cooling and fragrance-imparting particles.

[0077] Example 4

[0078] This embodiment provides a method for preparing cooling and scenting particles. The difference between the preparation method and Example 1 is that the concentration of sulfuric acid in step (1) is 30%, and the remaining steps are consistent with Example 1.

[0079] Example 5

[0080] This embodiment provides a method for preparing cooling and fragrance-imparting particles. The difference between the preparation method and Example 1 is that the concentration of sulfuric acid in step (1) is 3%, and the remaining steps are consistent with Example 1.

[0081] Example 6

[0082] This embodiment provides a method for preparing temperature-reducing and fragrance-imparting particles. The difference between the preparation method and embodiment 1 is that the drying temperature in step (1) is 250° C., and the remaining steps are consistent with embodiment 1.

[0083] Example 7

[0084] This embodiment provides a method for preparing cooling and scenting particles. The difference between the preparation method and Example 1 is that the mass ratio of the essence to the activated attapulgite powder in step (2) is 1:0.5, and the remaining steps are consistent with Example 1.

[0085] Example 8

[0086] This embodiment provides a method for preparing cooling and scenting particles. The difference between the preparation method and Example 1 is that the mass ratio of the essence to the activated attapulgite powder in step (2) is 1:5, and the remaining steps are consistent with Example 1.

[0087] Example 9

[0088] This embodiment provides a method for preparing cooling and scenting particles. The difference between the preparation method and Example 1 is that the air-drying temperature in step (4) is 60° C., and the remaining steps are consistent with Example 1.

[0089] Example 10

[0090] This embodiment provides a method for preparing cooling and scenting particles. The difference between the preparation method and Example 1 is that the air-drying temperature in step (4) is 20°C, and the remaining steps are consistent with Example 1.

[0091] Embodiment 11

[0092] This embodiment provides a method for preparing temperature-reducing and fragrance-imparting particles, the preparation method comprising:

[0093] (1) soaking the attapulgite in 8% sulfuric acid for 1 hour, then washing with water until the pH value is 6.5, filtering and drying at 120° C. for 1.5 hours, crushing and passing through a 100-mesh sieve to obtain activated attapulgite powder;

[0094] (2) dissolving the sweet orange essence in a 60% ethanol aqueous solution, wherein the solid-liquid ratio of the essence to the ethanol aqueous solution is 1:15 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 45 minutes, and grinding evenly to a fineness of 40 μm, wherein the mass ratio of the essence to the activated attapulgite powder is 1:2;

[0095] (3) mixing hydroxypropyl cellulose and the ground material in step (2) at a mass ratio of 1:25 for 30 minutes to obtain a mixed material;

[0096] (4) The mixture of step (3) and 60% ethanol aqueous solution were stirred and mixed at a mass ratio of 1:6 for 50 minutes, and after being uniformly mixed, they were air-dried at 40° C. for 2 hours and granulated to obtain composite particles;

[0097] (5) Mixing hydroxypropyl cellulose and 60% ethanol aqueous solution at a mass ratio of 1:20 to obtain a hydroxypropyl cellulose ethanol solution, and then coating the composite particles of step (4) with the hydroxypropyl cellulose ethanol solution to obtain the cooling and fragrance-imparting particles.

[0098] Example 12

[0099] This embodiment provides a method for preparing temperature-reducing and fragrance-imparting particles, the preparation method comprising:

[0100] (1) soaking the attapulgite in 8% sulfuric acid for 1 hour, then washing with water until the pH value is 6.5, filtering and drying at 120° C. for 1.5 hours, crushing and passing through a 100-mesh sieve to obtain activated attapulgite powder;

[0101] (2) dissolving the sweet orange flavor in water, wherein the solid-liquid ratio of the flavor to water is 1:15 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 45 minutes, and grinding evenly to a fineness of 40 μm, wherein the mass ratio of the flavor to the activated attapulgite powder is 1:2;

[0102] (3) mixing hydroxypropyl cellulose and the ground material in step (2) at a mass ratio of 1:25 for 30 minutes to obtain a mixed material;

[0103] (4) The mixture of step (3) and water were stirred and mixed at a mass ratio of 1:6 for 50 minutes, and after being uniformly mixed, the mixture was air-dried at 40° C. for 2 hours and granulated to obtain composite particles;

[0104] (5) Mixing hydroxypropyl cellulose and water at a mass ratio of 1:20 to obtain a hydroxypropyl cellulose solution, and then coating the composite particles of step (4) with the hydroxypropyl cellulose solution to obtain the cooling and fragrance-imparting particles.

[0105] Comparative Example 1

[0106] This comparative example provides a method for preparing cooling and fragrance-imparting particles, which comprises:

[0107] (1) soaking the attapulgite in 8% sulfuric acid for 1 hour, then washing with water until the pH value is 6.5, filtering and drying at 120° C. for 1.5 hours, crushing and passing through a 100-mesh sieve to obtain activated attapulgite powder;

[0108] (2) dissolving the sweet orange essence in anhydrous ethanol, wherein the ratio of the essence to the anhydrous substance is 1:15 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 45 minutes, and grinding evenly to a fineness of 40 μm, wherein the mass ratio of the essence to the activated attapulgite powder is 1:2;

[0109] (3) mixing hydroxypropyl cellulose and the ground material in step (2) at a mass ratio of 1:25 for 30 minutes to obtain a mixed material;

[0110] (4) The mixture of step (3) and anhydrous ethanol are stirred and mixed at a mass ratio of 1:6 for 50 minutes, and after being uniformly mixed, air-dried at 40° C. for 2 hours and granulated to obtain composite particles, namely the cooling and fragrance-imparting particles.

[0111] Comparative Example 2

[0112] This comparative example provides a method for preparing cooling and fragrance-imparting particles, which comprises:

[0113] (1) crushing attapulgite and passing it through a 100-mesh sieve to obtain activated attapulgite powder;

[0114] (2) dissolving the sweet orange essence in anhydrous ethanol, wherein the solid-liquid ratio of the essence to anhydrous ethanol is 1:15 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 45 minutes, and grinding evenly to a fineness of 40 μm, wherein the mass ratio of the essence to the activated attapulgite powder is 1:2;

[0115] (3) mixing hydroxypropyl cellulose and the ground material in step (2) at a mass ratio of 1:25 for 30 minutes to obtain a mixed material;

[0116] (4) The mixture of step (3) and anhydrous ethanol were stirred and mixed at a mass ratio of 1:6 for 50 minutes, and after being uniformly mixed, they were air-dried at 40° C. for 2 hours and granulated to obtain composite particles;

[0117] (5) Mixing hydroxypropyl cellulose and anhydrous ethanol at a mass ratio of 1:20 to obtain a hydroxypropyl cellulose ethanol solution, and then coating the composite particles of step (4) with the hydroxypropyl cellulose ethanol solution to obtain the cooling and fragrance-imparting particles.

[0118] Comparative Example 3

[0119] This comparative example provides a method for preparing cooling and fragrance-imparting particles, which comprises:

[0120] (1) soaking the attapulgite in 8% sulfuric acid for 1 hour, then washing with water until the pH value is 6.5, filtering and drying at 120° C. for 1.5 hours, crushing and passing through a 100-mesh sieve to obtain activated attapulgite powder;

[0121] (2) dissolving the sweet orange essence in anhydrous ethanol, wherein the solid-liquid ratio of the essence to anhydrous ethanol is 1:15 g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1) for 45 minutes, and grinding evenly to a fineness of 40 μm, wherein the mass ratio of the essence to the activated attapulgite powder is 1:2;

[0122] (3) The ground material of step (2) was mixed with anhydrous ethanol at a mass ratio of 1:6 for 50 min, and after being uniformly mixed, the mixture was air-dried at 40° C. for 2 h and granulated to obtain composite particles;

[0123] (4) Mixing hydroxypropyl cellulose and anhydrous ethanol at a mass ratio of 1:20 to obtain a hydroxypropyl cellulose ethanol solution, and then coating the composite particles of step (3) with the hydroxypropyl cellulose ethanol solution to obtain the cooling and fragrance-imparting particles.

[0124] Comparative Example 4

[0125] This comparative example provides a method for preparing cooling and fragrance-imparting particles, which comprises:

[0126] (1) soaking the attapulgite in 8% sulfuric acid for 1 hour, then washing with water until the pH value is 6.5, filtering and drying at 120° C. for 1.5 hours, crushing and passing through a 100-mesh sieve to obtain activated attapulgite powder;

[0127] (2) stirring and mixing the sweet orange flavor with the activated attapulgite powder obtained in step (1) for 45 minutes, grinding them evenly to a fineness of 40 μm, wherein the mass ratio of the flavor to the activated attapulgite powder is 1:2.5;

[0128] (3) mixing hydroxypropyl cellulose and the ground material in step (2) at a mass ratio of 1:25 for 30 minutes to obtain a mixed material;

[0129] (4) The mixture of step (3) and anhydrous ethanol were stirred and mixed at a mass ratio of 1:6 for 50 minutes, and after being uniformly mixed, they were air-dried at 40° C. for 2 hours and granulated to obtain composite particles;

[0130] (5) Mixing hydroxypropyl cellulose and anhydrous ethanol at a mass ratio of 1:20 to obtain a hydroxypropyl cellulose ethanol solution, and then coating the composite particles of step (4) with the hydroxypropyl cellulose ethanol solution to obtain the cooling and fragrance-imparting particles.

[0131] Test Example 1

[0132] A heated cigarette, the cigarette is composed of a acetate fiber section, a cavity firmware cooling section, and a tobacco material smoking section, wherein the cooling section cavity firmware contains the cooling and flavoring particles obtained in Examples 1-12 and Comparative Examples 1-4. A smoke temperature test is performed on the heated cigarette.

[0133] The test method is: simulate smoking according to the cigarette smoking mode specified in the national standard YC / T29-1996, use a K-type thermocouple temperature detector to detect the temperature at the center of the cigarette filter rod 2mm away from the mouth end when the cigarette is heated and smoked, simulate smoking 9 times, each smoking interval is 30s, and record the highest temperature. The results are shown in Table 1.

[0134] Table 1

[0135]

[0136]

[0137] Test Example 2

[0138] The cooling and aroma-imparting particles obtained in Examples 1-12 and Comparative Examples 1-4 were added to heated cigarettes to conduct a sensory quality test.

[0139] Test method: Sampling was carried out in accordance with the sampling method in GB5606.4-2005 "Cigarette Part 4: Sensory Technical Requirements", and sensory quality evaluation indicators and smoke stability indicators were set respectively. Seven sensory evaluators were organized to evaluate and score the cigarettes according to the evaluation contents and judgment criteria in Table 2-Table 3. The sensory quality indicators were scored on a 100-point scale.

[0140] The sensory quality evaluation indicators are: smoke volume, aroma and flavor, strength, harmony, irritation and aftertaste; the weights of each indicator are 10%, 30%, 10%, 10%, 15% and 25% respectively; the specific definitions of the 6 sensory quality evaluation indicators are shown in Table 2, the evaluation criteria of the 6 sensory quality evaluation indicators are shown in Table 3, and the specific results are shown in Table 4.

[0141] Table 2

[0142]

[0143] Table 3

[0144]

[0145] Table 4

[0146]

[0147]

[0148] It can be seen from the data in Tables 1 and 4 that, after the cooling and flavoring particles provided by the present invention are added to the heated cigarettes, compared with the blank heated cigarettes, not only the smoke temperature of the heated cigarettes is significantly reduced, but also the effect of sustained release of the particle smoke aroma is achieved. After being added to the heated cigarettes, the smoke aroma is enriched, which not only improves the smoke harmony and the aftertaste in the mouth, but also reduces throat irritation and increases the mouthfeel.

[0149] It can be seen from comparative examples 1-4 that when any step is missing in the preparation method, the effect of the cooling and flavoring particles in reducing the smoke temperature and the sustained release performance of the flavor components will be affected, thereby affecting the overall taste of the heated cigarette.

[0150] The applicant declares that the present invention illustrates the preparation method of the cooling and fragrance-imparting particles of the present invention and its products and applications through the above-mentioned embodiments. However, the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, the equivalent replacement of the raw materials of the product of the present invention, the addition of auxiliary components, the selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0151] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0152] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A method for preparing cooling and fragrance-imparting particles, characterized in that: The preparation method of the cooling and fragrance-imparting particles comprises the following steps: (1) activating the attapulgite, and then crushing and sieving to obtain activated attapulgite powder; (2) dissolving the essence in a solvent, wherein the material-liquid ratio of the essence to the solvent is 1:(10-20) g / mL, and then stirring and mixing with the activated attapulgite powder obtained in step (1), and grinding the mixture, wherein the mass ratio of the essence to the activated attapulgite powder is 1:(1-3), and the solvent is propylene glycol and / or anhydrous ethanol; (3) stirring and mixing a binder with the material ground in step (2) to obtain a mixed material, wherein the binder comprises hydroxypropyl cellulose and / or polyvinyl pyrrolidone, and the mass ratio of the binder to the material ground in step (2) is 1:(20-30); (4) The mixed material of step (3) is stirred and mixed with anhydrous ethanol, air-dried and granulated to obtain composite particles, wherein the mass ratio of the mixed material to anhydrous ethanol is 1:(1-10), the air-drying temperature is 30-40°C, and the time is 0.5-3h; (5) coating the composite particles obtained in step (4) to obtain the cooling and fragrance-imparting particles, wherein the coating material is dissolved in anhydrous ethanol, and the mass ratio of the coating material to the anhydrous ethanol is 1:(15-25); The activation treatment step in step (1) includes: (a) Soak the attapulgite in hydrochloric acid or sulfuric acid for 1-3 hours, and the concentration of the hydrochloric acid solution or sulfuric acid solution is 5-15%; (b) washing the attapulgite treated in step (a) with water until the pH of the water is 6-7; (c) filtering the washed attapulgite in step (b) and drying it at 110-130° C. to obtain the activated attapulgite.

2. The method for preparing the cooling and fragrance-imparting particles according to claim 1, characterized in that: The mesh size of the sieving in step (1) is 100-200 meshes.

3. The method for preparing the cooling and fragrance-imparting particles according to claim 1, characterized in that: The stirring and mixing time in step (2) is 0.5-1h.

4. The method for preparing the cooling and fragrance-imparting particles according to claim 1, characterized in that: Step (2) is grinding until the material fineness reaches less than 50 μm.

5. The method for preparing the cooling and fragrance-imparting particles according to claim 1, characterized in that: The stirring and mixing time in step (3) is 10-60 minutes.

6. The method for preparing the cooling and fragrance-imparting particles according to claim 1, characterized in that: The stirring and mixing time in step (4) is 0.5-1h.

7. The method for preparing the cooling and fragrance-imparting particles according to claim 1, characterized in that: The coating material in step (5) is any one of hydroxypropyl cellulose, shellac flakes, and polyvinyl pyrrolidone, or a combination of at least two thereof.

8. A cooling and fragrance-imparting particle, characterized in that: The cooling and fragrance-imparting particles are prepared by the method for preparing the cooling and fragrance-imparting particles according to any one of claims 1 to 7.

9. Use of the cooling and flavoring particles according to claim 8 in the preparation of heated cigarettes.

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