Electronic cigarette atomized liquid not prone to bitterness and core pasting, preparation method of electronic cigarette atomized liquid and application of electronic cigarette atomized liquid in electronic cigarette products

Abstract

The invention provides electronic cigarette atomized liquid not prone to bitterness and core pasting and a preparation method of the electronic cigarette atomized liquid, and belongs to the technical field of electronic cigarettes. The electronic cigarette atomized liquid contains a solvent and 0.01%-5% of neotame, the% is mass percentage content (w / w) or mass volume percentage content (w / v), and the particle size of the neotame is smaller than or equal to 10 micrometers. According to the electronic cigarette atomized liquid provided by the invention, the sweetness and taste are obviously improved, and the phenomena of bitterness and core pasting of the electronic cigarette atomized liquid containing neotame are obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic cigarettes, and particularly relates to an electronic cigarette atomizer liquid which is not prone to bitterness and burning, a preparation method thereof, and an application in electronic cigarette products. Background Art

[0002] The sticking of the atomization core of electronic cigarettes has a serious impact on the health and experience of consumers. Sweeteners are an important component of electronic cigarette oil, which can give electronic cigarettes a richer taste experience. There are many types of sweeteners in the food field, such as sucralose, neotame, sugar alcohols, etc., and the only sweetener allowed for use in the national standard for electronic cigarettes is neotame.

[0003] However, the D50 mesh number of neotame prepared by the existing process is generally around 100 meshes. In the application of e-cigarette oil, problems such as bitterness, attenuation, sweetness retention, no sweetness or little sweetness, and separation of sweetness and aroma often occur. The main reason is that the neotame prepared by the existing process is mainly aimed at traditional food processing applications. The solvent in the food processing field is generally an aqueous system, and the processing temperature is relatively low and the processing is relatively simple. However, in the field of e-cigarettes, due to the need for high-temperature atomization, the solvent system is generally propylene glycol and propylene glycol, and oil-conducting cotton or ceramic core filtration, the change in application scenarios has led to the compatibility of neotame prepared by the existing process with e-cigarette oil, such as core sticking, bitterness, and weak sweetness.

[0004] The existing technology often uses a combination of multiple sweeteners and neotame to improve the taste and core-burning problems of neotame in electronic cigarettes. For example, patent CN117179359A provides a sweetening composition including multiple sweeteners such as neotame, and patent CN113940439A provides a sweetener suitable for multiple puffs of electronic cigarette atomizer. Although the above method reduces the core-burning phenomenon to a certain extent, it fails to improve the quality of the atomizer by improving the properties of neotame itself, and thus there are still limitations in improving the quality of electronic cigarette products containing neotame atomizer. Summary of the invention

[0005] In order to solve the above problems, the present application aims to provide an electronic cigarette atomizing liquid, which contains a sweetener neotame that has been processed to have specific physical and chemical properties, thereby significantly improving the bitterness and stickiness problems that are easily caused by electronic cigarette atomizing liquid containing neotame in actual use.

[0006] On the one hand, the present application provides an electronic cigarette atomizer liquid that is not easy to taste bitter or become sticky, wherein the electronic cigarette atomizer liquid contains a solvent and 0.01% to 5% of neotame, wherein the % is the mass percentage (w / w) or the mass volume percentage (w / v), and the particle size of the neotame is ≤10 μm.

[0007] It is understandable that the neotame described in the present application has a chemical name of N-[N-(3,3-dimethylbutyl)-L-α-aspartyl]-L-phenylalanine 1-methyl ester, is a white crystalline powder at room temperature, and is a functional sweetener.

[0008] In one embodiment, the particle size of neotame is ≤3 μm, preferably ≤2.6 μm.

[0009] In one embodiment, the particle size of neotame described in the present application is the particle size when it is added to the electronic cigarette atomizer system as a raw material, and can also be expressed as a mesh number, for example, 10 μm is 1340 mesh, 6.5 μm is 2000 mesh, 2.6 μm is 5000 mesh, 1.6 μm is 8000 mesh, and 1.3 μm is 10000 mesh.

[0010] In a preferred embodiment, the particle size of the neotame is 0.01 to 10 μm, preferably 0.05 to 10 μm, more preferably 1 to 7 μm, more preferably 1 to 3 μm, for example 1.6 to 2.6 μm, 1.3 to 1.6 μm.

[0011] In one embodiment, the solvent is selected from one or more of propylene glycol, glycerol, and polyethylene glycol.

[0012] Preferably, the solvent is propylene glycol and glycerol.

[0013] More preferably, the solvent is propylene glycol and glycerol in a mass or volume ratio of (50-60):(30-45).

[0014] In one embodiment, the electronic cigarette atomizer liquid further includes any one of flavors, nicotine, and tobacco additives.

[0015] In one embodiment, the tobacco additive may be a cooling agent, a pH adjuster or other sweeteners.

[0016] In one embodiment, a bioactive health-care component may be added to the electronic cigarette atomizer liquid to make it have specific effects, such as anti-oxidation, anti-fatigue, etc.

[0017] In one embodiment, the content of other components in the electronic cigarette atomizer liquid can be added according to conventional amounts in the art.

[0018] On the other hand, the present application provides a method for preparing the above-mentioned electronic cigarette atomizer liquid that is not easy to be bitter and sticky, the method comprising:

[0019] Step 1: Grind neotame to a particle size of ≤10 μm;

[0020] Step 2: dissolving the crushed neotame with a portion of the solvent to obtain a neotame dilution solution, and then mixing the neotame dilution solution with the remaining solvent to obtain the electronic cigarette atomization liquid.

[0021] In one embodiment, in the step 1, a fluidized bed airflow mill is used to grind neotame.

[0022] In one embodiment, the high-pressure gas of a fluidized bed air flow mill is used to crush neotame, and the crushing pressure is 1-20 MPa; the gas is ejected through the Laval supersonic nozzle of the equipment and then subjected to collision type crushing, and the air volume is 100-1000 cubic meters / hour; the crushing area of ​​the equipment is provided with multiple Laval supersonic nozzles, and the speed is about 1-5 Mach; the squirrel cage classifying wheel is used to shear the material fineness, and the speed of the classifying wheel is 15000-18000 revolutions / minute. During the high-speed rotation of the classifying wheel, qualified materials are introduced into the rear end of the classifying wheel for collection, and unqualified materials are taken out by centrifugal force and then hit the wall and fall to continue crushing, so that the material particle size reaches the preset result.

[0023] In one embodiment, the step 2 specifically comprises: firstly preparing neotame with propylene glycol into a neotame diluent having a mass concentration of 10% to 50%, and then mixing the neotame diluent with propylene glycol and glycerol in a volume ratio of (0.5 to 10): (50 to 60): (30 to 45).

[0024] Preferably, the mass concentration of the neotame diluent is 15% to 30%, more preferably 20%.

[0025] On the other hand, the present application provides a method for reducing the bitterness and mushy degree of an electronic cigarette atomizer containing neotame, the method comprising the steps of crushing the neotame to a particle size of ≤10 μm and then preparing the electronic cigarette atomizer.

[0026] In one embodiment, the particle size of neotame is ≤3 μm, preferably ≤2.6 μm.

[0027] In a preferred embodiment, the particle size of the neotame is 0.01 to 10 μm, preferably 0.05 to 10 μm, more preferably 1 to 7 μm, more preferably 1 to 3 μm, for example 1.6 to 2.6 μm, 1.3 to 1.6 μm.

[0028] On the other hand, the present application provides the electronic cigarette atomizing liquid, or the preparation method, or the use of the method in preparing an electronic cigarette product with good sensory quality, low bitterness and low degree of core burnt.

[0029] In one embodiment, the sensory quality includes but is not limited to sweetness, sweetness, sweetness lingering on the tongue, bitterness, etc.

[0030] In one embodiment, the atomization temperature of the electronic cigarette product is 200-400° C., such as 230-280° C., 290-380° C., etc.

[0031] In one embodiment, the oil-conducting core of the electronic cigarette product is a ceramic core or a cotton core.

[0032] In one embodiment, the electronic cigarette product has an applicable number of puffs of at least 750, preferably at least 760, and more preferably 770 to 1000.

[0033] This application has at least the following beneficial effects:

[0034] 1. The electronic cigarette atomizer liquid provided in the present application uses neotame crushed to 1500 to 10000 mesh, i.e., a particle size of 1.3 to 10 um, as a sweetener, so that the solubility and stability of neotame in solvents propylene glycol and glycerol are significantly improved, thereby significantly improving the atomization efficiency of neotame in the field of electronic cigarettes. The improvement of neotame atomization efficiency, on the one hand, neotame at this particle size has obvious improvements in sweetness left on the tongue, sweetness, sweetness and bitterness. The high-temperature heating test shows that the neotame after ultrafine grinding has a better stabilizing effect on the temperature of the heating wire, and is less likely to be bitter due to high-temperature decomposition than the neotame before ultrafine grinding; on the other hand, the number of pores in the oil-conducting cotton and the ceramic core is more, which can significantly improve the core sticking phenomenon; and, compared with other operations such as ultrasound and high shear to improve the solubility of the mixed solution, the present application adopts the method of making neotame into a specific particle size and then dissolving it to make neotame more dispersible, less emulsification risk, higher sweetness, no bitterness, and more uniform atomization effect, not easy to stick to the core; compared with the method of adding a co-solvent such as triethyl citrate, it is safer. Therefore, the method provided in this application is more suitable for making electronic cigarette products.

[0035] 2. The method for preparing the electronic cigarette atomizer liquid provided in this application is simple to operate, and the process is safe and pollution-free. It is suitable for industrial production and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0038] Figure 1Result diagrams of the evaluation of the degree of sticking of each example of atomized liquid in the ceramic core electronic cigarette, wherein a and e correspond to the result diagrams of Examples 1-4, and d and f correspond to the result diagrams of Comparative Examples 1 and 2, respectively;

[0039] Figure 2 Result diagrams of the evaluation of the degree of sticking of each example of atomized liquid in the cotton core electronic cigarette, wherein a and b correspond to the result diagrams of Examples 1-4, and d and f correspond to the result diagrams of Comparative Examples 1 and 2, respectively;

[0040] Figure 3 It is a line graph of the sum of the pixel points of the atomized liquid temperature in each example - the number of puffs (manual puffing / cotton core);

[0041] Figure 4 It is a line graph of the sum of the pixel points of the atomized liquid temperature in each example - the number of puffs (smoking machine puffs / cotton core);

[0042] Figure 5 It is a line graph of the sum of pixel points of the atomized liquid temperature in each example - the number of puffs (manual puffing / ceramic core);

[0043] Figure 6 It is a line graph of the sum of pixel points of atomized liquid temperature in each example - number of puffs (smoking machine puffing / ceramic core). DETAILED DESCRIPTION

[0044] In order to more clearly explain the overall concept of the application, the following is described in detail by way of embodiment. In the following description, a large amount of specific details are provided so as to provide a more thorough understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the application, some technical features well known in the art are not described.

[0045] Unless otherwise specified, in the following embodiments, the reagents or instruments used without indicating the manufacturer are all conventional products that can be purchased from the market. Among them, the neotame raw material is commercially available with a particle size of 100-120 mesh (i.e., 120um-150um); propylene glycol is commercially available with a purity of food grade; glycerol is commercially available with a purity of food grade; the fluidized bed airflow mill is provided by Shandong Haona Machinery Equipment Co., Ltd., model HN-QL03; the smoking machine used for the test is an automatic smoking machine provided by Dongguan Feihong Instrument Equipment Co., Ltd., model FH-Y3206C.

[0046] If no specific conditions are specified in the examples, the experiments were carried out according to conventional conditions or conditions recommended by the manufacturer.

[0047] Example 1

[0048] This embodiment provides an electronic cigarette atomizer liquid, and the preparation method thereof is as follows:

[0049] Step 1: Use a fluidized bed jet mill to grind the solid neotame particles (particle size 120um-150um, i.e. 100-120 mesh) into ultrafine powder. The parameters are: air flow rate: 20m 3 / min; total power: 150kw, working pressure 16Mpa; classifier speed 2000rpm; the obtained particle size is 6.5um-10um, that is, the mesh size is 2000-1340 mesh neotame;

[0050] Step 2: Mix neotame with a particle size of 6.5um-10um and propylene glycol (PG), stir at room temperature to completely dissolve, and prepare a neotame diluent with a mass concentration of 20%. Mix 20% neotame diluent: propylene glycol (PG): glycerol (VG) in a volume ratio of 5:57:38, stir at room temperature to completely dissolve and set aside.

[0051] Example 2

[0052] The preparation method of this embodiment is substantially the same as that of embodiment 1, except that the parameters of ultrafine grinding by fluidized bed airflow mill in step 1 are as follows: air flow rate: 40m 3 / min; total machine power: 300kw, working pressure 25Mpa; classifier speed 4000rpm; obtain neotame with a particle size of 2.6um-6.5um, that is, a mesh size of 2000-5000 mesh, and use the method of step 2 to prepare an atomized liquid for standby use.

[0053] Example 3

[0054] The preparation method of this embodiment is substantially the same as that of embodiment 1, except that the parameters of ultrafine grinding by fluidized bed airflow mill in step 1 are as follows: air flow rate: 50m 3 / min; total machine power: 400kw, working pressure 35Mpa; classifier speed 6000rpm; obtain neotame with a particle size of 1.6um-2.6um, that is, a mesh size of 5000-8000 mesh, and use the method of step 2 to prepare an atomized liquid for standby use.

[0055] Example 4

[0056] The preparation method of this embodiment is substantially the same as that of embodiment 1, except that the parameters of ultrafine grinding by fluidized bed airflow mill in step 1 are as follows: air flow rate: 60m 3 / min; total machine power: 500kw, working pressure 50Mpa; classifier speed 8000rpm; obtain neotame with a particle size of 1.3um-1.6um, that is, a mesh size of 8000-10000 mesh, and use the method of step 2 to prepare an atomized liquid for standby use.

[0057] Comparative Example 1

[0058] This example uses commercially available neotame raw materials with a particle size of 120um-150um, i.e. 100-120 mesh, which are directly mixed with propylene glycol (PG) and stirred at room temperature to completely dissolve, and a neotame diluent with a mass concentration of 20% is prepared. 20% neotame diluent: propylene glycol (PG): glycerol (VG) are mixed in a volume ratio of 5:57:38 and stirred at room temperature to completely dissolve for use.

[0059] Comparative Example 2

[0060] In this example, neotame with a particle size of 120um-150um is used, which is directly mixed with propylene glycol (PG) and stirred at room temperature to completely dissolve, and a neotame dilution with a mass concentration of 20% is prepared, and then a high shear dispersion treatment is performed, wherein the parameters are a speed of 10000rpm and a duration of 40min; the treated 20% neotame dilution: propylene glycol (PG): glycerol (VG) are mixed in a volume ratio of 5:57:38 and stirred at room temperature to completely dissolve for standby use.

[0061] The electronic cigarette atomizer liquid prepared in the above examples was injected into the electronic cigarette device for testing. The details are as follows:

[0062] The test method for the mouthfeel evaluation of each example aerosol is as follows:

[0063] Take 2 ml of the electronic cigarette atomizer liquid from the above-mentioned embodiment and comparative example and inject them into the same electronic cigarette device respectively. Through manual inhalation and tasting, the electronic cigarette atomizer liquid in the electronic cigarette device is completely atomized and inhaled to taste the taste of the aerosol. The following two groups of equipment are divided into tests:

[0064] Group 1: Electronic cigarette devices with ceramic cores, heating element resistance of 1.2Ω, output voltage of 3.3V, and output current of 1.0A. Ceramic cores refer to electronic cigarette atomizers that can pass through ceramic gaps, and a heating element is provided on the ceramic, so that the electronic cigarette atomizers are atomized into aerosols by the heating element after passing through the ceramic core, and users use aerosols as a way to evaluate the taste of the cigarette. The results are shown in Table 1 (the evaluation dimensions are sweetness 1-10 points, the better the sweetness, the higher the score; the sweetness intensity on the tongue is 1-10 points, the higher the score, the stronger the sweetness; the degree of sweetness fusion is 1-10 points, the higher the fusion, the higher the score; the sweetness is 1-10 points, the higher the score, the higher the sweetness; whether there is bitterness during the suction process):

[0065] Table 1

[0066] Example Sweetness Sweetness intensity on tongue Sweetness and flavor fusion Sweetness Is it bitter? Example 1 8 3 8 8 none Example 2 9 3 8 8 none Example 3 10 2 9 9 none Example 4 10 1 10 10 none Comparative Example 1 4 9 4 4 bitter Comparative Example 2 5 7 6 6 Slightly bitter

[0067] From the results in Table 1, it can be seen that the application of crushed neotame in ceramic core electronic cigarette devices can improve the sweetness of the aerosol, especially when the particle size of the crushed neotame is finer, the sweetness and sweetness are released more fully in the user's mouth, and the sweetness intensity on the tongue surface is weakened, and there will be no sweet feeling, thereby improving the user experience; at the same time, a small amount of neotame can be added to achieve the improvement of sweetness and sweetness, thereby reducing the user's use cost, and during the suction process, there is no bitterness, which improves the aerosol taste experience; and compared with other processes for increasing solubility such as high shear dispersion, the ultrafine grinding process is used to make neotame into a specific particle size and then dissolve it in the atomization solvent. The dispersion is better, the atomization effect of the atomized liquid is more uniform, the sweetness is stronger and more uniform, the emulsification risk is smaller, the sweetness is higher, and there is no bitterness; and higher safety is obtained in the addition of co-solvents, such as in the addition of triethyl citrate co-solvent, which is characterized by higher safety, better solubility, better dispersibility, and higher sweetness.

[0068] The second group: Cotton core electronic cigarette equipment, heating element resistance is 1.2Ω, output voltage is 3.3V, output current is 1.0A, cotton core means that the electronic cigarette atomized liquid can pass through the cotton gap, and a heating element is set on the cotton, so that the electronic cigarette atomized liquid is atomized into aerosol by the heating element after passing through the cotton core, and the user uses the aerosol as a way to evaluate the taste. The results are shown in Table 2 (the evaluation dimensions are sweetness 1-10 points, the better the sweetness, the higher the score; the tongue surface sweetness intensity 1-10 points, the higher the score, the stronger the sweetness; the degree of sweetness fusion 1-10 points, the higher the fusion, the higher the score; the sweetness 1-10 points, the higher the score, the higher the sweetness; whether there is bitterness during the suction process):

[0069] Table 2

[0070] Example Sweetness Sweetness intensity on tongue Sweetness and fusion Sweetness Is it bitter? Example 1 8 3 7 8 none Example 2 9 3 9 8 none Example 3 10 2 10 9 none Example 4 10 1 10 10 none Comparative Example 1 4 9 3 4 bitter Comparative Example 2 6 7 5 6 Slightly bitter

[0071] It can be seen from the results in Table 2 that the application of crushed neotame in the cotton core electronic cigarette device improves the sweetness of the aerosol, especially the finer the particle size of the crushed neotame, the more uniform the amount of neotame passing through the gaps in the cotton core, so that the sweetness and sweetness in the aerosol are released more fully in the user's mouth, and at the same time, the sweetness intensity on the tongue surface is weakened, and there will be no greasy sweet feeling, thereby improving the user experience; at the same time, a small amount of neotame can be added to achieve the improvement of sweetness and sweetness, thereby reducing the user's use cost; and during use, it is not bitter and has a better taste; the neotame in Comparative Example 2 is processed by a high shear dispersion process, but it still tastes bitter. After ultrafine grinding by a fluidized bed airflow mill, the ultrafine grinding neotame has better dispersibility, more uniform atomization effect, stronger and more uniform sweetness, smaller emulsification risk, higher sweetness, and no bitterness.

[0072] Core burn degree evaluation:

[0073] The specific test plan is: use a smoking machine to take 1000 puffs, and manually take a puff every 50 puffs to determine whether the core is burnt. The test conditions are: take 10ml of the electronic cigarette atomizer liquid in the above-mentioned embodiment and comparative example and inject it into the same electronic cigarette device, first use the smoking machine to smoke, and then use the manual puffing method to determine whether the core is burnt during the puffing process. If the core is burnt, stop smoking the electronic cigarette device with the smoking machine. The following is divided into 2 groups of equipment for testing.

[0074] Group 1: Ceramic core electronic cigarette device, heating element resistance is 1.2Ω, output voltage is 3.3V, output current is 1.0A, each time the smoking machine takes 50 puffs, and 5 puffs are manually checked to determine whether the aerosol produced by the atomization has the phenomenon of burning the core and bitterness. The results are shown in Table 3:

[0075] Table 3

[0076]

[0077] From the results in Table 3, it can be seen that when smoking with a smoking machine and manually testing, the smaller the particle size of neotame after ultrafine grinding, the better the dispersion of neotame, the more uniform the atomization effect, the stronger and more uniform the sweetness, the smaller the risk of emulsification, and the higher the sweetness. Therefore, there is less residue or condensation in the ceramic core, and the atomization is more complete. Therefore, the longer the life of the electronic cigarette device, that is, the smaller the probability of the core being burnt and bitter during the puffing process, and the more puffs are taken, the more cost-saving it is for users. Among them, the final state of the ceramic core of each example is shown in Figure 1 .

[0078] Group 2: Cotton core electronic cigarette device, heating element resistance is 1.2Ω, output voltage is 3.3V, output current is 1.0A, each time the smoking machine takes 50 puffs, and 5 puffs are manually checked to determine whether the aerosol produced by the atomization has the phenomenon of burning the core and bitterness. The results are shown in Table 4:

[0079] Table 4

[0080]

[0081] From the results in Table 4, it can be seen that when smoking with a smoking machine and manually testing, the smaller the particle size of neotame after crushing, the better the dispersion of neotame, the more uniform the atomization effect, the stronger and more uniform the sweetness, the smaller the risk of emulsification, and the higher the sweetness. Therefore, there is less residue or condensation in the ceramic core, and the atomization is more complete. Therefore, the longer the life of the electronic cigarette device, that is, the smaller the probability of bitterness and core sticking during the puffing process; and the more puffs you take, the more cost-saving it can be for users. The final state of each example cotton core is shown in Figure 2 .

[0082] The temperature range of the heating components inside the electronic cigarette device is captured using a thermal imaging lens. The captured objects are collected within the range of 10 puffs of manual inhalation and 10 puffs of simulated inhalation by a smoking machine. Since the optimal atomization temperature of the electronic cigarette device is around 230℃-280℃, it is easy to burn the core after exceeding 300℃, and the taste is poor. Therefore, this experiment chooses to obtain the sum of pixels with a temperature of 290℃-380℃ for analysis. The more pixels obtained at this position, the easier it is to burn the core.

[0083] The atomized liquids of Examples 1 to 4 and Comparative Examples 1 to 2 were injected into a cotton core smoking device, and a smoking experiment was conducted by manually taking 10 puffs and simulating 10 puffs with a smoking machine. The results are shown in Figure 3 and Figure 4 .

[0084] Depend on Figure 3 and Figure 4 The results show that the total number of pixels in the temperature range of 290°C-380°C for Comparative Examples 1 and 2 increases sharply, thus increasing the risk of core burn. The total number of pixels in the temperature range of 290°C-380°C for Examples 1 to 4 is relatively small and stable, so the atomization effect is better and the taste is stable.

[0085] The atomized liquids of Examples 1 to 4 and Comparative Examples 1 to 2 were injected into a smoking device with a ceramic core, and a smoking experiment was conducted by manually taking 10 puffs and simulating 10 puffs with a smoking machine. The results are shown in Figure 5 and Figure 6 .

[0086] Depend on Figure 5 and Figure 6 The results show that the total number of pixels in the temperature range of 290℃-380℃ for Comparative Examples 1 and 2 is much higher than that in Example 1, thus increasing the risk of core burning. The total number of pixels in Example 1 to Example 4 within the temperature range of 290℃-380℃ is relatively small and stable, so the atomization effect is better and the taste is stable.

[0087] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An electronic cigarette atomizing liquid that is not easy to taste bitter or become sticky, characterized in that: The electronic cigarette atomizer liquid contains a solvent and 0.01% to 5% of neotame, wherein the % is the mass percentage (w / w) or the mass volume percentage (w / v), and the particle size of the neotame is ≤10 μm.

2. The electronic cigarette atomizing liquid according to claim 1, characterized in that: The particle size of the neotame is ≤3 μm, preferably ≤2.6 μm.

3. The electronic cigarette atomizing liquid according to claim 1, characterized in that: The solvent is selected from one or more of propylene glycol, glycerol and polyethylene glycol.

4. The electronic cigarette atomizing liquid according to claim 1, characterized in that: The electronic cigarette atomizer liquid also includes any one of flavors, nicotine, and cooling agents.

5. The method for preparing the electronic cigarette atomizer liquid that is not prone to bitterness and stickiness as claimed in any one of claims 1 to 4, characterized in that: The method comprises: Step 1: Grind neotame to a particle size of ≤10 μm; Step 2: Dissolve the crushed neotame with a portion of solvent to obtain a neotame dilution solution, and then add the neotame dilution solution into the solvent to obtain the electronic cigarette atomizer solution.

6. The method according to claim 5, characterized in that In the step 1, a fluidized bed air flow mill is used to grind neotame.

7. The method according to claim 5, characterized in that The step 2 specifically comprises: firstly preparing neotame with propylene glycol into a neotame diluent having a mass concentration of 10% to 50%, and then mixing the neotame diluent with propylene glycol and glycerol in a volume ratio of (0.5 to 10): (50 to 60): (30 to 45).

8. A method for reducing the bitterness and mushyness of an electronic cigarette aerosol liquid containing neotame, characterized in that: The method comprises the steps of crushing neotame to a particle size of ≤10 μm and then preparing the neotame into an electronic cigarette atomizer.

9. Use of the electronic cigarette atomizer liquid according to any one of claims 1 to 4, or the preparation method according to any one of claims 5 to 7, or the method according to claim 8 in preparing an electronic cigarette product with good sensory quality, low bitterness and low degree of core burn.

10. The use according to claim 9, characterized in that: The atomization temperature of the electronic cigarette product is 200-400°C; And / or, the oil guide core of the electronic cigarette product is a ceramic core or a cotton core; And / or, the electronic cigarette product has a applicable number of puffs of at least 750.

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