Aroma-carrying cellulose particle coated with activated carbon

Abstract

The utility model relates to the field of fragrance-carrying of cigarettes, in particular to a fragrance-carrying cellulose particle coated with activated carbon. The aroma-loaded cellulose particles coated with the activated carbon comprise aroma-loaded cellulose particles; the active carbon particles are coated on the outer layers of the aroma-carrying cellulose particles; wherein the aroma-carrying cellulose particles are of hollow structures. According to the aroma-carrying cellulose particle coated with the activated carbon, the adding uniformity in a filter stick can be improved, and the holding capacity of the cigarette essence carried by the aroma-carrying cellulose particle can be improved.

Description

Technical Field

[0001] The utility model relates to the field of flavor carriers for cigarettes, in particular to flavor carrier cellulose particles coated with activated carbon. Background Art

[0002] After cellulose is dissolved in a low-temperature sodium hydroxide-urea system, it can be regenerated in the form of cellulose gel under the action of an antisolvent. Cellulose gel is a porous material and an ideal flavor carrier. Cellulose gel particles (referred to as cellulose particles) can be obtained by adding a cellulose solution in the form of droplets to an antisolvent. Flavor-loaded cellulose particles can be obtained by solvent replacement. Flavor-loaded cellulose particles can be added to filter rods for cigarettes to improve the smoking experience of cigarettes and give them a characteristic aroma. However, on the one hand, the poor fluidity of the flavor-loaded cellulose particles leads to uneven addition in the filter rods, making the product quality unstable; on the other hand, the flavor-loaded cellulose particles have insufficient ability to retain flavors, resulting in a short shelf life for the product. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an activated carbon-coated aroma-carrying cellulose particle.

[0004] Specifically, the present invention provides activated carbon-coated aroma-carrying cellulose particles, comprising: aroma-carrying cellulose particles; and activated carbon particles coating the outer layer of the aroma-carrying cellulose particles; wherein the aroma-carrying cellulose particles are hollow. The novel activated carbon-coated aroma-carrying cellulose particles provided in the present invention embodiment have activated carbon particles uniformly coated on the surface of the hollow aroma-carrying cellulose particles. The use of the aroma-carrying cellulose particles and the activated carbon particles coating the outer layer of the hollow aroma-carrying cellulose particles improves the uniformity of the aroma-carrying cellulose particles in the filter rod and enhances their ability to retain the tobacco flavoring.

[0005] Preferably, the interior of the fragrance-loaded cellulose particles is a hollow structure, and a grid-like supporting structure is provided within the hollow structure.

[0006] More preferably, the surface layer of the flavor-carrying cellulose particles is a thin wall of cellulose gel, and the thin wall of cellulose gel is adsorbed with tobacco flavor.

[0007] More preferably, the tobacco flavor in the flavor-carrying cellulose particles is mint flavor.

[0008] Preferably, the fragrance-carrying cellulose particles are hollow cellulose fragrance gel particles.

[0009] Preferably, the particle size of the fragrance-carrying cellulose particles is 0.5 to 2000 μm.

[0010] More preferably, the particle size of the fragrance-loaded cellulose particles is 500 to 1500 μm.

[0011] Preferably, the fragrance-carrying cellulose particles are ellipsoidal in shape.

[0012] Preferably, the activated carbon particles are in a powdery or honeycomb shape.

[0013] More preferably, the particle size of the activated carbon particles is in the range of 50 to 80 meshes.

[0014] The beneficial effects of this utility model include at least one: by coating the surface of the aroma-carrying fiber particles with activated carbon particles, the novel aroma-carrying cellulose particles not only improve the poor flowability of existing aroma-carrying cellulose particles but also enhance their flavor retention. This improves the uniformity of the aroma-carrying cellulose particles in the filter rod and enhances their ability to retain the tobacco flavor. Compared to conventional aroma-carrying cellulose particles, the aroma-carrying cellulose particles coated with activated carbon have significantly improved flavor retention. According to the national standard GB / T 31057.3, the flowability index is improved by 13%. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the structure of aroma-loaded cellulose particles coated with activated carbon provided in an embodiment of the present utility model.

[0017] Figure 2 The scanning electron microscope characterization results of the activated carbon used in the examples of the present utility model are shown.

[0018] Among them, 1-cellulose particle flavor adsorption layer, 2-activated carbon particles, 3-cellulose particle cavity. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the utility model.

[0020] Unless otherwise noted, the raw materials and reagents used in the following examples are commercially available or can be prepared by known methods. Where specific techniques or conditions are not specified in the examples, all reactions were performed according to conventional methods, techniques or conditions described in literature in the field, or according to product specifications. Reagents and instruments used, for which the manufacturer is not specified, are all conventional products available through regular channels.

[0021] In the following examples, the cellulose particles used were provided by Mudanjiang Cigarette Material Factory Co., Ltd., the tobacco flavors used were provided by Shanghai Mudan Flavors and Fragrances Co., Ltd., and the activated carbon (greater than 100 mesh and derived from wood), talc (800 mesh), calcium carbonate (≤30 μm), and zeolite used were purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The present invention provides an activated carbon-coated aroma-carrying cellulose particle, comprising: an aroma-carrying cellulose particle; and activated carbon particles coated on the outer layer of the aroma-carrying cellulose particle; wherein the aroma-carrying cellulose particle has a hollow structure. The present invention provides novel activated carbon-coated aroma-carrying cellulose particles, wherein the activated carbon particles are coated on the surface of the hollow aroma-carrying cellulose particle with interstices. The use of the aroma-carrying cellulose particles and the activated carbon particles coated on the outer layer of the hollow aroma-carrying cellulose particle improves the uniformity of the aroma-carrying cellulose particle addition to the filter rod and enhances its ability to retain the tobacco flavoring.

[0024] In a further preferred embodiment, the surface layer of the flavor-carrying cellulose particles is a thin wall of cellulose gel, and the thin wall of cellulose gel is adsorbed with tobacco flavoring.

[0025] In some preferred embodiments, the tobacco flavor loading amount of the flavor-carrying cellulose particles is 35% to 40%, preferably 38.4%.

[0026] In a further preferred embodiment, the tobacco flavor in the flavor-carrying cellulose particles is mint flavor.

[0027] In some preferred embodiments, the fragrance-loaded cellulose particles are ellipsoidal in shape.

[0028] As a preferred embodiment, the fragrance-carrying cellulose particles are hollow cellulose fragrance gel particles.

[0029] As a preferred embodiment, the particle size of the fragrance-carrying cellulose particles is 0.5 to 2000 μm.

[0030] In some preferred embodiments, the particle size of the fragrance-loaded cellulose particles is 500-1500 μm.

[0031] In a further preferred embodiment, the bulk density of the fragrance-carrying cellulose particles is 0.25 to 0.35 g / cm 3 .

[0032] As a preferred embodiment, the activated carbon particles are in the shape of spheres, powders or honeycombs.

[0033] In a further preferred embodiment, the particle size of the activated carbon particles is in the range of 50 to 80 meshes.

[0034] The utility model optimizes the range of activated carbon particle size so that the activated carbon particles can be better coated on the surface of the fragrance-carrying cellulose particles, thereby achieving more excellent effects in improving fluidity and enhancing fragrance holding capacity.

[0035] In a further preferred embodiment, the shape of the activated carbon particles is irregular, the particle size of the activated carbon particles is in the range of 60 to 70 meshes; the BJH average pore size of the activated carbon particles is 2 to 3 nm, preferably 2.3 nm; the BET specific surface area of ​​the activated carbon particles is 700 to 800 m 2 / g, preferably 754m 2 / g.

[0036] As a preferred embodiment, the amount of the activated carbon coated on the fragrance-carrying cellulose particles is not greater than the amount of the fragrance-carrying cellulose particles.

[0037] In some preferred embodiments, the volume ratio of the aroma-loaded cellulose particles to the activated carbon is 90:10 to 60:40.

[0038] In a further preferred embodiment, the flowability index of the aroma-loaded cellulose particles coated with activated carbon is 65-73.

[0039] In a further preferred embodiment, the angle of repose of the activated carbon-coated aroma-carrying cellulose particles is 44° to 50°, the degree of compression is 18% to 25%, the spatula angle is 52° to 63.0°, and the uniformity is 2 to 3. The new type of activated carbon-coated aroma-carrying cellulose particles provided in the embodiment of the present invention can solve the problems of poor fluidity and insufficient aroma-holding capacity of the current aroma-carrying cellulose particles, optimize the uniformity of adding the aroma-carrying cellulose particles in the filter rod, and improve the ability to retain the tobacco flavors they carry. The aroma-carrying cellulose particles coated with activated carbon in the present invention have significantly improved aroma-holding capacity compared to ordinary aroma-carrying cellulose particles. According to the national standard GB / T 31057.3, the fluidity index is improved by at least 13%.

[0040] The aroma-carrying cellulose particles coated with activated carbon provided in some specific embodiments of the present invention are as follows: Figure 1-2As shown, the aroma-carrying cellulose particles coated with activated carbon are composed of aroma-carrying cellulose particles and activated carbon particles 2 coating the outer layer; the aroma-carrying cellulose particles are composed of a cellulose particle aroma adsorption layer 1 and a cellulose particle cavity 3. The particle size of the aroma-carrying cellulose particles is 500-1500 μm, and the particle size of the activated carbon particles is in the range of 60-70 mesh. The BJH average pore size of the activated carbon particles is 2.3 nm; the BET specific surface area is 754 m 2 The aroma-carrying cellulose particles are hollow cellulose flavor gel particles. The thin cellulose gel wall on the surface is used to absorb the flavor. The interior is a cavity structure with a grid-like support structure in the cavity of the cellulose particles. The bulk density of the cellulose particles is 0.3±0.05g / cm 3 The tobacco flavoring in the aroma-loaded cellulose particles is mint flavoring; the tobacco flavoring loading is 38.4%. The activated carbon particles are irregular in shape. The volume ratios of the aroma-loaded cellulose particles to the activated carbon particles 2 are 90:10, 80:20, 70:30, and 60:40, respectively (in accordance with Specific Examples 1 to 4). The aroma-loaded cellulose particles coated with activated carbon in each example are prepared as follows: the aroma-loaded cellulose particles and the activated carbon particles are blended and mixed uniformly according to the volume ratio. Equal amounts of the aroma-loaded cellulose particles coated with activated carbon provided in the above examples are placed in open brown glass bottles. The samples are placed in a 70°C oven for 2 hours. The characteristic aroma component menthol in the flavoring is then quantitatively analyzed according to tobacco industry standard YCT 416-2011. Under the same treatment conditions, the menthol release rates of the aroma-loaded cellulose particles coated with activated carbon provided in Specific Examples 1 to 4 are 39.3%, 38.0%, 37.4%, and 35.4%, respectively. The activated carbon-coated aroma-loaded cellulose particles provided in Examples 1 to 4 were evaluated for fluidity using the GB / T 31057.3-2018 method. The results showed that the fluidity index of Example 1 was 69.0, with a repose angle of 45.0°, a compression of 25%, a spatula angle of 53.0°, and a uniformity of 2; the fluidity index of Example 2 was 71.5, with a repose angle of 46.0°, a compression of 18%, a spatula angle of 52.0°, and a uniformity of 2; the fluidity index of Example 3 was 73.0, with a repose angle of 44.0°, a compression of 19%, a spatula angle of 58.0°, and a uniformity of 3; and the fluidity index of Example 4 was 65.0, with a repose angle of 50.0°, a compression of 19%, a spatula angle of 63.0°, and a uniformity of 3.

[0041] The comparative example provided by the present invention utilizes the uncoated activated carbon aroma-carrying cellulose particles of the specific embodiment. Equal amounts of the uncoated activated carbon aroma-carrying cellulose particles of the comparative example were placed in an open brown glass bottle. These samples were then oven-cured at 70°C for 2 hours. Menthol, a characteristic aroma-causing component in the flavor, was then quantitatively analyzed according to tobacco industry standard YCT 416-2011. The menthol release rate of the untreated aroma-carrying cellulose particles after 2 hours of treatment at 70°C was 54.5%. The uncoated activated carbon aroma-carrying cellulose particles of the comparative example were evaluated for fluidity using the method of GB / T 31057.3-2018. The results showed that the uncoated activated carbon aroma-carrying cellulose particles had a fluidity index of 67.5. The activated carbon-coated aroma-carrying cellulose particles provided in the specific embodiment of the present invention exhibit significantly better fluidity than the comparative example.

[0042] In this study, seven samples of the activated carbon-coated aroma-loaded cellulose particles of the third embodiment (heat-treated for different time periods) and the uncoated activated carbon cellulose particles of the comparative example were placed in a 70°C oven. Samples were removed at one-hour intervals, yielding two groups of seven samples with different treatment times. Menthol, a characteristic aroma component in the flavor, was then quantitatively analyzed according to tobacco industry standard YCT 416-2011. The results showed that the menthol release rates of the uncoated aroma-loaded cellulose particles after treatment for 1 to 7 hours were 10.0%, 28.8%, 52.0%, 73.6%, 76.0%, 79.8%, 80.5%, and 81.1%, respectively. The menthol release rates of the activated carbon-coated aroma-loaded cellulose particles of the examples of this invention after treatment for 1 to 7 hours were 21.7%, 37.4%, 43.3%, 45.0%, 49.1%, 54.8%, 61.8%, and 64.0%, respectively. In the embodiment of the present invention, the essence can continuously release fragrance components after being coated with activated carbon, and the activated carbon improves the fragrance holding ability of the material.

[0043] The present invention also provides the following comparative example, which differs from Specific Example 3 in that the activated carbon particles are replaced with talc, calcium carbonate, and zeolite. Equal amounts of the samples from the comparative example were placed in open brown glass bottles. These samples were oven-dried at 70°C for 2 hours. The characteristic aroma component menthol in the flavor was then quantitatively analyzed according to tobacco industry standard YCT 416-2011. The results showed that the menthol release rates of the flavor-loaded cellulose particles blended with talc, calcium carbonate, and zeolite were 51.8%, 47.2%, and 47.4%, respectively. The flavor-loaded cellulose particles coated with activated carbon provided in this specific example of the utility model significantly outperformed the comparative example coated with talc, calcium carbonate, and zeolite.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fragrance-carrying cellulose particle coated with activated carbon, characterized in that: include: Fragrance-carrying cellulose particles; and activated carbon particles coated on the outer layer of the fragrance-carrying cellulose particles; Wherein, the fragrance-carrying cellulose particles are hollow structures.

2. The aroma-carrying cellulose particles coated with activated carbon according to claim 1, characterized in that The interior of the fragrance-carrying cellulose particles is a cavity structure, and a grid-shaped supporting structure is provided in the cavity structure.

3. The aroma-carrying cellulose particles coated with activated carbon according to claim 2, characterized in that: The surface layer of the flavor-carrying cellulose particles is a thin wall of cellulose gel; and tobacco flavor is absorbed on the thin wall of cellulose gel.

4. The aroma-carrying cellulose particles coated with activated carbon according to claim 3, characterized in that The tobacco flavor in the flavor-carrying cellulose particles is mint flavor.

5. The aroma-carrying cellulose particles coated with activated carbon according to claim 4, characterized in that The fragrance-carrying cellulose particles are hollow cellulose fragrance gel particles.

6. The aroma-carrying cellulose particles coated with activated carbon according to claim 1, characterized in that The particle size of the fragrance-carrying cellulose particles is 0.5 to 2000 μm.

7. The aroma-carrying cellulose particles coated with activated carbon according to claim 6, characterized in that The particle size of the fragrance-carrying cellulose particles is 500 to 1500 μm.

8. The aroma-carrying cellulose particles coated with activated carbon according to claim 1, characterized in that The shape of the fragrance-carrying cellulose particles is ellipsoidal.

9. The aroma-carrying cellulose particles coated with activated carbon according to any one of claims 1 to 8, characterized in that: The activated carbon particles are in the shape of powder or honeycomb.

10. The aroma-carrying cellulose particles coated with activated carbon according to claim 9, characterized in that: The particle size of the activated carbon particles ranges from 50 to 80 meshes.

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