Fuming material based on nanocellulose

Abstract

The invention discloses a fuming material based on nanocellulose, the fuming material comprises nanocellulose and water, a tobacco extract and a fuming agent are loaded on the nanocellulose, and the mass ratio of the nanocellulose to the fuming agent is 1: (0.01-0.3); the mass ratio of the nanocellulose to the tobacco extract is 1: (0.01-0.5); the mass ratio of the nanocellulose to the water is 1: (1-50). The fuming material is prepared by the following method: sequentially adding water, a tobacco extract and a fuming agent into nanocellulose; performing mechanical stirring; performing ultrasonic treatment; and finally, drying to obtain the fuming material. The nanocellulose loaded with the tobacco extract and the smoke generating agent is used as a smoke generating material, the characteristics that the nanocellulose does not contain lignin, is large in specific surface area, high in capacity of loading tobacco aroma components and the smoke generating agent, easy to process and form and the like are utilized, and the nanocellulose has the remarkable advantages of being prominent in tobacco aroma, simple in cigarette structure and the like when applied to heating cigarettes.

Description

Technical Field

[0001] The invention relates to the technical field of smoking materials, and in particular to a smoking material based on nanocellulose. Background Art

[0002] Heated cigarettes are a new category of cigarette products that have grown rapidly at home and abroad in recent years. The type and production process of the core material as a smoking material determine the smoke release, smoke state, smoke aroma characteristics and smoking experience. At present, the smoking material of heated cigarettes generally uses reconstituted tobacco leaves, whose main components are tobacco powder, outer fiber, smoke agent, adhesive and blended flavors. They are prepared by papermaking, roller pressing, thick slurry or dry method. When used in heated cigarettes, there are often defects such as the lack of prominent tobacco flavor, poor smoking uniformity, and obvious impurities and irritation. Therefore, the development of smoking materials with independent intellectual property rights, rich smoke aroma, large smoke release, good smoking uniformity and strong satisfaction is an important basis for the development of heated cigarettes.

[0003] Nanocellulose has the characteristics of large specific surface area, strong ability to load tobacco flavor components and smoke agents, and easy processing and molding. Compared with traditional smoking materials, it does not contain lignin, pectin, hemicellulose and other substances. Making full use of the above characteristics of nanocellulose, embedding and adsorbing tobacco flavor components and smoke agents in it, and developing new smoking materials suitable for heated cigarettes is a highly innovative research field, which is of great significance for improving the smoking quality and market competitiveness of heated cigarette products. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a smoking material based on nanocellulose, aiming to improve the sensory quality and market competitiveness of heated cigarettes by utilizing the characteristics of nanocellulose.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] A nanocellulose-based smoking material comprises nanocellulose and water, wherein tobacco extract and a smoking agent are loaded on the nanocellulose, wherein the mass ratio of the nanocellulose to the smoking agent is 1:0.01 to 1:0.3; the mass ratio of the nanocellulose to the tobacco extract is 1:0.01 to 1:0.5; and the mass ratio of the nanocellulose to water is 1:1 to 1:50.

[0007] Preferably, the fiber diameter of the nanocellulose is 30-100 nm, the crystallinity is 80%-95%, and the degree of polymerization is 1900-8000; the smoke generating agent is one or more of glycerol, 1,3-propylene glycol, 1,2-propylene glycol, sorbitol, isosorbide, xylitol, and erythritol.

[0008] Preferably, the tobacco extract is prepared by the following method: taking an appropriate amount of tobacco leaf raw material, crushing it to a particle size of less than or equal to 0.5 cm, adding 3 times the mass of ethanol and stirring it evenly, and then standing it at room temperature for 4 hours, and then extracting it at 70°C and 80rpm for 6 hours, filtering and removing solid residues after cooling to obtain a liquid part, and distilling it under reduced pressure at 65°C until no liquid drips, thereby obtaining the tobacco extract.

[0009] Preferably, the rotation speed of the mechanical stirring is 10 to 1000 rpm, and the time of the mechanical stirring is 0.1 to 3.0 h; the ultrasonic frequency of the ultrasonic treatment is 10 to 100 kHz, the power density is 0.1 to 0.25 W / mL, the temperature is 20 to 100° C., and the time is 0.1 to 2.0 h; the mass proportion of water in the smoking material after the drying treatment is 5% to 20%.

[0010] A method for preparing a nanocellulose-based smoking material comprises the following steps:

[0011] (1) adding water, tobacco extract and smoke generating agent to nanocellulose in sequence, wherein the mass ratio of nanocellulose to smoke generating agent is 1:0.01 to 1:0.3; the mass ratio of nanocellulose to tobacco extract is 1:0.01 to 1:0.5; and the mass ratio of nanocellulose to water is 1:1 to 1:50;

[0012] (2) mechanical stirring;

[0013] (3) performing ultrasonic treatment;

[0014] (4) Finally, drying is performed to obtain the smoke-generating material.

[0015] Preferably, in step (1), the fiber diameter of the nanocellulose is 5 to 100 nm, the crystallinity is 80% to 95%, and the degree of polymerization is 1900 to 8000.

[0016] Preferably, in step (1), the smoke generating agent is one or more of glycerol, 1,3-propylene glycol, 1,2-propylene glycol, sorbitol, isosorbide, xylitol, and erythritol.

[0017] Preferably, the tobacco extract is prepared by the following method: taking an appropriate amount of tobacco leaf raw material, crushing it to a particle size of less than or equal to 0.5 cm, adding 3 times the mass of ethanol and stirring it evenly, and then standing it at room temperature for 4 hours, and then extracting it at 70°C and 80rpm for 6 hours, filtering and removing solid residues after cooling to obtain a liquid part, and distilling it under reduced pressure at 65°C until no liquid drips, thereby obtaining the tobacco extract.

[0018] Preferably, in step (2), the rotation speed of the mechanical stirring is 10 to 1000 rpm, and the time of the mechanical stirring is 0.1 to 3.0 h.

[0019] Preferably, in step (3), the ultrasonic frequency of the ultrasonic treatment is 10 to 100 kHz, the power density is 0.1 to 0.25 W / mL, the temperature is 20 to 100° C., and the time is 0.1 to 2.0 h.

[0020] Preferably, in step (4), the mass proportion of water in the smoking material after the drying treatment is 5% to 20%.

[0021] A heated cigarette comprising the above-mentioned smoking material.

[0022] The invention discloses an application of a smoking material in a heated cigarette.

[0023] The above technical solution of the present invention has the following beneficial effects:

[0024] Compared with the previous technology of using reconstituted tobacco leaves as smoking materials, the preparation process of the smoking materials based on nanocellulose is simple, and the application in heated cigarettes has significant advantages such as rich tobacco flavor and simple cigarette structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0026] Figure 1 This is a scanning electron microscope image of the smoke-generating material obtained in Example 1. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0028] Unless otherwise specified, the following experimental materials are commercially available or obtained through other commercial channels. Among them, the tobacco extract is prepared by the following method: take an appropriate amount of tobacco leaf raw material, crush it to a particle size of less than or equal to 0.5 cm, add 3 times the mass of ethanol and stir it evenly, then stand it at room temperature for 4 hours, then extract it at 70°C and 80rpm for 6 hours, filter and remove the solid residue after cooling to obtain the liquid part, and distill it under reduced pressure at 65°C until no liquid drips, so as to obtain the tobacco extract.

[0029] Embodiment 1:

[0030] A nanocellulose-based smoking material, the preparation method of which comprises the following steps:

[0031] Take 50g of nanocellulose and put it into a 250ml beaker. Add 1200g of water, 2.5g of tobacco extract and 5.0g of glycerol into the beaker.

[0032] First, mechanical stirring was performed at a speed of 200 rpm for 0.1 h;

[0033] Then, ultrasonic treatment was performed with an ultrasonic frequency of 28 kHz, a temperature of 40°C, and a time of 0.2 h;

[0034] Finally, the mixture was placed in an oven at 110°C for 1.5 hours, and the moisture content was 14.3%.

[0035] After the dried material was processed and shaped, it was used as a smoke-generating material. Its microscopic morphology was characterized by scanning electron microscopy. The results are as follows: Figure 1 shown.

[0036] The smoking materials were made into heated cigarettes and their sensory characteristics were evaluated. The scoring results are shown in Table 1.

[0037] Example 2

[0038] A nanocellulose-based smoking material, the preparation method of which comprises the following steps:

[0039] Take 50g of nanocellulose and put it into a 250ml beaker. Add 1250g of water, 5.0g of tobacco extract and 7.5g of 1,3-propylene glycol into the beaker.

[0040] First, mechanical stirring was performed at a speed of 300 rpm for 0.2 h;

[0041] Then, ultrasonic treatment was carried out with an ultrasonic frequency of 28 kHz, a temperature of 50°C, and a time of 0.3 h;

[0042] Finally, the mixed material was placed in an oven at 110°C for 1.5 hours, and the moisture content was 15.1%.

[0043] The dried material was processed into shapes and used as a smoking material to make heated cigarettes. The sensory characteristics were evaluated and the scoring results are shown in Table 1.

[0044] Example 3

[0045] A nanocellulose-based smoking material, the preparation method of which comprises the following steps:

[0046] 50 g of nanocellulose was placed in a 250 ml beaker, and 1400 g of water, 7.5 g of tobacco extract, and 10.0 g of 1,2-propylene glycol were added to the beaker;

[0047] First, mechanical stirring was performed at a speed of 500 rpm for 0.3 h;

[0048] Then, ultrasonic treatment was performed with an ultrasonic frequency of 45 kHz, a temperature of 60°C, and a time of 0.4 h;

[0049] Finally, the mixed material was placed in an oven at 110°C for 2.0 hours, and the moisture content was 14.9%.

[0050] The dried material was processed into shapes and used as a smoking material to make heated cigarettes. The sensory characteristics were evaluated and the scoring results are shown in Table 1.

[0051] Example 4

[0052] A nanocellulose-based smoking material, the preparation method of which comprises the following steps:

[0053] 50 g of nanocellulose was placed in a 250 ml beaker, and 1500 g of water, 10.0 g of tobacco extract, and 12.5 g of sorbitol were added to the beaker;

[0054] First, mechanical stirring was performed at a speed of 800 rpm for 0.4 h;

[0055] Then, ultrasonic treatment was performed with an ultrasonic frequency of 45 kHz, a temperature of 70°C, and a time of 0.5 h;

[0056] Finally, the mixed material was placed in an oven at 110°C for 2.0 hours, and the moisture content was 16.7%.

[0057] The dried material was processed into shapes and used as a smoking material to make heated cigarettes. The sensory characteristics were evaluated and the scoring results are shown in Table 1.

[0058] Example 5

[0059] A nanocellulose-based smoking material, the preparation method of which comprises the following steps:

[0060] Take 50g of nanocellulose and put it into a 250ml beaker. Add 1600g of water, 12.5g of tobacco extract and 12.5g of isosorbide into the beaker.

[0061] First, mechanical stirring was performed at a speed of 800 rpm for 0.5 h;

[0062] Then, ultrasonic treatment was performed with an ultrasonic frequency of 100 kHz, a temperature of 70°C, and a time of 1.5 h;

[0063] Finally, the mixed material was placed in an oven at 110°C for 2.5 hours, and the moisture content was 15.8%. The dried material was processed and formed into a heated cigarette as a smoking material, and its sensory characteristics were evaluated. The scoring results are shown in Table 1.

[0064] Example 6

[0065] A nanocellulose-based smoking material, the preparation method of which comprises the following steps:

[0066] Take 50g of nanocellulose and put it into a 250ml beaker. Add 1700g of water, 15.0g of tobacco extract and 12.5g of xylitol into the beaker.

[0067] First, mechanical stirring was performed at a speed of 800 rpm for 0.6 h;

[0068] Then, ultrasonic treatment was performed with an ultrasonic frequency of 100 kHz, a temperature of 70°C, and a time of 2.0 h;

[0069] Finally, the mixed material was placed in an oven at 110°C for 3.0 hours, and the moisture content was 14.6%.

[0070] The dried material was processed into shapes and used as a smoking material to make heated cigarettes. The sensory characteristics were evaluated and the scoring results are shown in Table 1.

[0071] from Figure 1 The results show that the fiber width on the surface of the smoking material is small and presents a uniform network structure, which is conducive to the adsorption and embedding of tobacco flavor components and smoking agents.

[0072] Table 1 Sensory quality scores of heated cigarettes made from smoking materials in different embodiments

[0073]

[0074]

[0075] From the results shown in Table 1, it can be seen that compared with the existing heated cigarettes made of reconstituted tobacco as the smoking material (numbered 0), the six groups of heated cigarettes prepared by Examples 1-6 generally have different degrees of improvement in multiple indicators such as smoke volume, strength, comfort and uniformity. Among them, the samples obtained in Example 2 and Example 5 have the highest total sensory quality scores improved by 1.2 points and 1.3 points compared with the control samples.

[0076] Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Any person skilled in the art may make various choices and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is limited by the claims and their equivalents.

Claims

1. A smoking material based on nanocellulose, characterized in that: The invention comprises nanocellulose and water, wherein tobacco extract and a smoke generating agent are loaded on the nanocellulose, and the mass ratio of the nanocellulose to the smoke generating agent is 1:0.01 to 1: 0.3; the mass ratio of nanocellulose to tobacco extract is 1:0.01 to 1:0.5; the mass ratio of nanocellulose to water is 1:1 to 1:

50.

2. The nanocellulose-based smoking material according to claim 1, characterized in that The fiber diameter of the nanocellulose is 30-100nm, the crystallinity is 80%-95%, and the polymerization degree is 1900-8000; the smoke generating agent is one or more of glycerol, 1,3-propylene glycol, 1,2-propylene glycol, sorbitol, isosorbide, xylitol, and erythritol.

3. The nanocellulose-based smoking material according to claim 1, characterized in that The tobacco extract is prepared by the following method: Take an appropriate amount of tobacco leaf raw material, crush it to a particle size of less than or equal to 0.5 cm, add 3 times the mass of ethanol and stir evenly, then let it stand at room temperature for 4 hours, then extract it at 70°C and 80rpm for 6 hours, filter and remove the solid residue after cooling to obtain the liquid part, and distill it under reduced pressure at 65°C until no liquid drips, thereby obtaining the tobacco extract.

4. A method for preparing a smoking material based on nanocellulose, characterized in that: The following steps are involved: (1) adding water, tobacco extract and smoke generating agent to nanocellulose in sequence, wherein the mass ratio of nanocellulose to smoke generating agent is 1:0.01 to 1:0.3; the mass ratio of nanocellulose to tobacco extract is 1:0.01 to 1:0.5; and the mass ratio of nanocellulose to water is 1:1 to 1:50; (2) mechanical stirring; (3) performing ultrasonic treatment; (4) Finally, drying is performed to obtain the smoke-generating material.

5. The method for preparing a nanocellulose-based smoking material according to claim 4, characterized in that: In step (1), the fiber diameter of the nanocellulose is 5 to 100 nm, the crystallinity is 80% to 95%, and the degree of polymerization is 1900 to 8000.

6. The method for preparing a nanocellulose-based smoking material according to claim 4, characterized in that: In step (1), the smoke generating agent is one or more of glycerol, 1,3-propylene glycol, 1,2-propylene glycol, sorbitol, isosorbide, xylitol, and erythritol.

7. The method for preparing a nanocellulose-based smoking material according to claim 4, characterized in that: In step (1), the tobacco extract is prepared by the following method: Take an appropriate amount of tobacco leaf raw material, crush it to a particle size of less than or equal to 0.5 cm, add 3 times the mass of ethanol and stir evenly, then let it stand at room temperature for 4 hours, then extract it at 70°C and 80rpm for 6 hours, filter and remove the solid residue after cooling to obtain the liquid part, and distill it under reduced pressure at 65°C until no liquid drips, thereby obtaining the tobacco extract.

8. The method for preparing a nanocellulose-based smoking material according to claim 4, characterized in that: In step (2), the rotation speed of the mechanical stirring is 10 to 1000 rpm, and the time of the mechanical stirring is 0.1 to 3.0 h; in step (3), the ultrasonic frequency of the ultrasonic treatment is 10 to 100 kHz, the power density is 0.1 to 0.25 W / mL, the temperature is 20 to 100° C., and the time is 0.1 to 2.0 h; in step (4), the mass proportion of water in the smoking material after the drying treatment is 5% to 20%.

9. A heated cigarette, characterized in that: The invention comprises the smoking material according to any one of claims 1 to 3 or the smoking material prepared according to any one of the preparation methods according to claims 4 to 9.

10. Use of the smoking material according to any one of claims 1 to 3 or the smoking material prepared according to any one of claims 4 to 9 in heated cigarettes.

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