CN112369651B - Tobacco-flavored electronic lampblack and preparation method thereof - Google Patents
Tobacco-flavored electronic lampblack and preparation method thereof Download PDFInfo
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- CN112369651B CN112369651B CN202010298851.4A CN202010298851A CN112369651B CN 112369651 B CN112369651 B CN 112369651B CN 202010298851 A CN202010298851 A CN 202010298851A CN 112369651 B CN112369651 B CN 112369651B
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- tobacco
- oil
- propylene glycol
- electronic
- volatile oil
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- 239000006233 lamp black Substances 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title abstract description 19
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 99
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 83
- 241000208125 Nicotiana Species 0.000 claims abstract description 53
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 53
- 239000000341 volatile oil Substances 0.000 claims abstract description 41
- 239000003921 oil Substances 0.000 claims abstract description 40
- 235000011187 glycerol Nutrition 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000779 smoke Substances 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000000796 flavoring agent Substances 0.000 claims abstract description 14
- PHOQVHQSTUBQQK-SQOUGZDYSA-N D-glucono-1,5-lactone Chemical compound OC[C@H]1OC(=O)[C@H](O)[C@@H](O)[C@@H]1O PHOQVHQSTUBQQK-SQOUGZDYSA-N 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 239000000706 filtrate Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005374 membrane filtration Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 235000012209 glucono delta-lactone Nutrition 0.000 claims description 4
- 229960003681 gluconolactone Drugs 0.000 claims description 4
- 239000003571 electronic cigarette Substances 0.000 abstract description 27
- 235000019504 cigarettes Nutrition 0.000 abstract description 10
- 230000000391 smoking effect Effects 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 10
- 235000009508 confectionery Nutrition 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 6
- 206010013911 Dysgeusia Diseases 0.000 abstract description 5
- 235000019634 flavors Nutrition 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 210000000214 mouth Anatomy 0.000 abstract description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 abstract description 3
- 239000008103 glucose Substances 0.000 abstract description 3
- -1 glucose lactone Chemical class 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 8
- 238000000605 extraction Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 239000012046 mixed solvent Substances 0.000 description 6
- 238000004821 distillation Methods 0.000 description 4
- YKVWPZJHENXDAJ-VOTSOKGWSA-N Megastigmatrienone Chemical compound CC1=CC(=O)CC(C)(C)C1\C=C\C=C YKVWPZJHENXDAJ-VOTSOKGWSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001256 steam distillation Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 235000019615 sensations Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
- A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
Abstract
The invention provides tobacco flavor electronic oil smoke and a preparation method thereof, wherein the preparation method comprises the following steps: (1) mixing tobacco powder with water, glycerin and propylene glycol; (2) Distilling the obtained mixture, and collecting volatile oil; (3) Mixing the volatile oil with propylene glycol, and filtering; and (4) adding glycerol and glucolactone into the obtained filtrate to obtain the tobacco-flavor electronic oil smoke. The preparation method of the invention takes the tobacco waste as the raw material, thereby changing waste into valuable; the heating process of the electronic cigarette oil is simulated, the characteristic aroma components suitable for the electronic cigarette oil are extracted in a targeted manner, meanwhile, the glucose lactone is added to prepare the cigarette oil, the cigarette oil is mellow in smoke during smoking, the aftertaste of the oral cavity is slightly sweet, and the electronic cigarette oil is novel in taste.
Description
Technical Field
The invention belongs to the field of electronic oil smoke, and particularly relates to tobacco-flavored electronic oil smoke and a preparation method thereof.
Background
Along with the improvement of living standard of people, people pay more and more attention to the health of the body, and meanwhile, smoking is forbidden by law and regulations in a plurality of public places abroad, so that the electronic cigarette which is a substitute of the cigarette is invented according to the requirements of foreign smokers. The electronic cigarette is an electronic product simulating a cigarette, and has the same appearance, smoke, taste and sensation as the cigarette. It is a product which is used for a user to suck after nicotine and the like are changed into steam by means of atomization and the like.
The electronic cigarette oil is one of important components of the electronic cigarette, is electronic atomized liquid used in cooperation with the electronic cigarette, and can generate mist like a cigarette by heating through an electronic cigarette atomizer. When people smoke the electronic cigarette, the people smoke the vaporized substances of the electronic cigarette oil. The taste characteristics of the electronic cigarette oil are important influencing factors for the experience of consumers, and the current electronic cigarette oil mainly takes tobacco taste, fruit taste and the like as main factors.
The research on the tobacco flavor electronic cigarette will become a hot spot of the electronic cigarette in the future. The electronic cigarette oil with the tobacco taste is mainly prepared by blending tobacco extract, glycerin, propylene glycol and the like, wherein the tobacco extract is mainly extracted by taking solvents such as water, alcohol, petroleum ether and the like as media and adopting the modes of reflux extraction, distillation and the like, and related reports of mixed extraction of water, glycerin and propylene glycol are not found.
Disclosure of Invention
The invention aims to overcome the defects of a preparation method of tobacco-flavor electronic oil smoke in the prior art and provides novel tobacco-flavor electronic oil smoke and a preparation method thereof. The preparation method takes the tobacco waste as the raw material, realizes the purpose of changing waste into valuable, has obviously improved extraction rate compared with a steam distillation method, and ensures that the tobacco of the obtained electronic oil smoke has obvious characteristic fragrance, obvious licking feeling and smoking feeling, soft, fine and thick smoke and slightly sweet cavity aftertaste by adding the glucolactone as an additive. Accordingly, the inventors have completed the present invention based on the above-described objects and findings.
In one aspect, the invention provides a method of preparing tobacco-flavored electronic cooking fumes, comprising the steps of: (1) mixing tobacco powder with water, glycerin and propylene glycol; (2) Distilling the obtained mixture, and collecting volatile oil; (3) Mixing the volatile oil with propylene glycol, and filtering; and (4) adding glycerol and glucolactone into the obtained filtrate to obtain the tobacco-flavor electronic oil smoke.
In a preferred embodiment of the invention, the particle size of the tobacco powder is 0.01 to 1mm.
In a preferred embodiment of the present invention, in step (1), the weight ratio of the tobacco powder to water, glycerin and propylene glycol is 1:1-10:1-10:1-10.
In a preferred embodiment of the invention, the distillation is carried out at a temperature of from 100 to 200 ℃ and for a time of from 1 to 3 hours.
In a preferred embodiment of the present invention, the step of collecting the volatile oil comprises: collecting fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator.
In a preferred embodiment of the present invention, in step (3), the volatile oil is used in an amount of 0.5 to 2% by weight, based on the weight of the propylene glycol.
In a preferred embodiment of the present invention, the filtration is membrane filtration, preferably the membrane filtration is micron ceramic membrane filtration.
In a preferred embodiment of the present invention, in step (4), the glycerin and the gluconolactone are used in an amount of 10 to 20% by weight and 0.5 to 2% by weight, respectively, based on the weight of the filtrate.
In another aspect, the invention also provides a tobacco-flavored e-liquid tobacco, which is prepared by the method as described above.
According to the disclosure, the preparation method has the advantages that at least the tobacco waste is used as the raw material, so that the waste is changed into valuable; the heating process of the electronic cigarette oil is simulated, the characteristic aroma components suitable for the electronic cigarette oil are extracted in a targeted manner, meanwhile, the glucose lactone is added to prepare the cigarette oil, the cigarette oil is mellow in smoke during smoking, the tobacco characteristic aroma is obvious, the sweet feeling and the smoking feeling are obvious, the smoke is soft, fine and thick, the aftertaste of the oral cavity is sweet and slightly sweet, and the electronic cigarette oil is novel in taste. In addition, the preparation method of the invention adopts water, glycerol and propylene glycol to extract the tobacco aroma substances, and compared with steam distillation, the extraction rate is effectively improved. Meanwhile, for aroma substances, the electronic oil smoke obtained by the preparation method provided by the invention is obviously improved in the content of the aroma substances such as 3-hydroxy-alpha-damascenone, megastigmatrienone, 3-hydroxysarthone, 1,4-diethyl-6,7-dihydroxy-cyclopentenopyran-3 (5H) -one and the like, so that the electronic oil smoke has better mouthfeel.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
In one aspect, the invention provides a method of preparing tobacco-flavored electronic cooking fumes, comprising the steps of: (1) mixing tobacco powder with water, glycerin and propylene glycol; (2) Distilling the obtained mixture, and collecting volatile oil; (3) Mixing the volatile oil with propylene glycol, and filtering; and (4) adding glycerol and glucolactone into the obtained filtrate to obtain the tobacco-flavor electronic oil smoke.
According to the present invention, the tobacco powder as the raw material can be obtained by various means commonly used in the art. For example, the tobacco powder can be obtained by pulverizing tobacco waste, thereby reducing the process cost and realizing recycling of the tobacco waste. In addition, the present invention does not particularly require the particle size of the tobacco powder, as long as the tobacco extract can be obtained therefrom. However, in order to increase the extraction rate of the tobacco extract, the particle size of the tobacco powder may be controlled to some extent. In a preferred embodiment, the particle size of the tobacco powder may be 0.01-1mm, such as 0.05mm, 0.1mm, 0.2mm, or 0.5mm, etc.
Further, in order to improve the extraction rate of the tobacco extract, the preparation method of the present invention employs water, glycerin and propylene glycol as a mixed solvent for extracting the tobacco extract. Thus, step (1) of the preparation method comprises mixing the tobacco powder with water, glycerol and propylene glycol. However, the preparation method does not particularly require the mixing order of the mixing steps, and for example, water, glycerin and propylene glycol may be added to the tobacco powder in sequence or in any order, or water, glycerin and propylene glycol may be previously mixed and then added to the tobacco powder together. In addition, the preparation method of the present invention may include controlling the amounts of the tobacco powder, water, glycerin and propylene glycol. In a preferred embodiment, in step (1), the weight ratio of the tobacco powder to water, glycerin and propylene glycol may be 1:1-10:1-10:1-10, that is, the weight of water, glycerin, and propylene glycol can each independently be 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, or 10 times the weight of the tobacco powder.
The process of the invention then comprises distilling the resulting mixture and collecting the volatile oil. In order to obtain the desired fraction, in a preferred embodiment, the temperature of the distillation may be in the range of 100 to 200 ℃, e.g. 120 ℃, 140 ℃, 160 ℃ or 180 ℃ and the time may be in the range of 1 to 3h, e.g. 1.5h, 2h or 2.5h. In addition, the process of collecting the volatile oil in the distillation fraction can be obtained by a method generally used in the art as long as the method can obtain the volatile oil from the fraction. In a preferred embodiment, the step of collecting the volatile oil may comprise: collecting fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator.
Then, the method further comprises the steps (3) and (4), and the extracted volatile oil is continuously subjected to subsequent treatment to obtain the electronic oil smoke with the tobacco flavor expected by the invention. The volatile oil may be used in an amount of 0.5 to 2 wt% (e.g., 1 wt% or 1.5 wt%) based on the weight of the propylene glycol during the mixing of step (3). In addition, in the filtration process of step (3), the filtration may be membrane filtration, and more preferably, the membrane filtration is micron ceramic membrane filtration. More specifically, the micron ceramic membrane may be a micron ceramic membrane having a pore size of 0.1 to 10 μm (e.g., 0.5 μm, 1 μm, or 5 μm) to achieve a better filtration effect. In addition, the additive added in the step (4) can enable the electronic lampblack of the invention to have more excellent mouthfeel. In a preferred embodiment, the glycerol and gluconolactone are used in amounts of 10 to 20 wt% (e.g., 15 wt%) and 0.5 to 2 wt% (e.g., 1 wt%), respectively, based on the weight of the filtrate.
In another aspect, the invention also provides a tobacco-flavored e-liquid tobacco, which is prepared by the method as described above.
The preparation method of the invention takes the tobacco waste as the raw material, thereby changing waste into valuable; the heating process of the electronic cigarette oil is simulated, the characteristic aroma components suitable for the electronic cigarette oil are extracted in a targeted manner, meanwhile, the glucose lactone is added to prepare the cigarette oil, the cigarette oil is mellow in smoke during smoking, the tobacco characteristic aroma is obvious, the sweet feeling and the smoking feeling are obvious, the smoke is soft, fine and thick, the aftertaste of the oral cavity is sweet and slightly sweet, and the electronic cigarette oil is novel in taste. In addition, the preparation method adopts the mixture of water, glycerol and propylene glycol to extract the tobacco aroma substances, and compared with steam distillation, the extraction rate is effectively improved. Meanwhile, for aroma substances, the content of the aroma substances such as 3-hydroxy-alpha-damascenone, megastigmatrienone, 3-hydroxysulcotrione, 1,4-diethyl-6,7-dihydroxy-cyclopentenopyran-3 (5H) -one and the like is obviously improved through the electronic oil smoke, so that the electronic oil smoke has better mouthfeel.
The present invention will be described in detail below by way of examples.
Example 1
Taking 10g tobacco powder (particle size of 0.1 mm), adding mixed solvent of 10g water, 30g propylene glycol and 60g glycerol, and distilling at 200 deg.C for 3 hr; collecting the fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator; adding 0.05g of the obtained volatile oil into 10g of propylene glycol, and filtering the mixture in a 0.8-micron ceramic membrane; and adding 1g of glycerol and 0.05g of glucolactone into the obtained filtrate, and uniformly blending to obtain the tobacco-flavor electronic cigarette liquid S1.
Example 2
Taking 10g of tobacco powder (particle size of 0.1 mm), adding a mixed solvent of 40g of water, 50g of propylene glycol and 10g of glycerol, and distilling at 120 ℃ for 2 hours; collecting the fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator; adding 0.1g of the volatile oil into 10g of propylene glycol, and filtering with a 0.8-micron ceramic membrane; and adding 1.5g of glycerol and 0.1g of glucolactone into the obtained filtrate, and uniformly blending to obtain the tobacco-flavor electronic tobacco tar S2.
Example 3
Taking 10g tobacco powder (particle size is 0.1 mm), adding a mixed solvent of 60g water, 20g propylene glycol and 20g glycerol, and distilling at 110 deg.C for 2 hr; collecting the fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator; adding 0.1g of the volatile oil into 10g of propylene glycol, and filtering with a 0.8-micron ceramic membrane; and adding 2g of glycerol and 0.2g of glucolactone into the obtained filtrate, and uniformly blending to obtain the tobacco-flavor electronic cigarette oil S3.
Example 4
Taking 10g tobacco powder (particle size is 0.1 mm), adding mixed solvent of 80g water, 10g propylene glycol and 10g glycerol, and distilling at 100 deg.C for 2 hr; collecting the fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator; adding 0.1g of the volatile oil into 10g of propylene glycol, and filtering with a 0.8-micron ceramic membrane; and adding 2g of glycerol and 0.05g of glucolactone into the obtained filtrate, and uniformly blending to obtain the tobacco-flavor electronic cigarette liquid S4.
Comparative example 1
Tobacco-flavored electronic cigarette oil D1 was prepared in the same manner as in example 1, except that the mixed solvent was replaced with 100g of water and no gluconolactone was added subsequently.
The preparation methods of the above examples and comparative examples were performed in triplicate, thereby reducing errors during the experiments. Next, the present inventors tested some properties of the volatile oils and tobacco flavor e-liquid obtained in examples 1-4 and comparative example 1, wherein the properties tested mainly included: the yield of (1) volatile oil, i.e., the weight% of the obtained volatile oil calculated based on the total weight of the raw materials, is expressed as a range of values according to the results of a number of tests, and the results are shown in table 1, (2) the composition and content of volatile components in volatile oil, the results of which are shown in table 2, and (3) the sensory smoking effect of tobacco-flavored E-liquid tobacco, the results of which are shown in table 3.
TABLE 1
As can be seen from the results of Table 1, in the case of examples 1 to 4 in which tobacco aroma is extracted by mixing water, glycerin and propylene glycol, the yield of volatile oil is significantly higher than that of comparative example 1, thereby reducing the cost of the manufacturing process and improving the efficiency.
TABLE 2
As can be seen from the results in table 2, the content of the aroma substances of example 1, such as 3-hydroxy- α -damascenone, megastigmatrienone, 3-hydroxysulcotone, 1,4-diethyl-6,7-dihydroxy-cyclopentenopyran-3 (5H) -one, is significantly higher than that of comparative example 1, so that the smoking effect of the electronic cigarette smoke of the present invention can be made better.
TABLE 3
As can be seen from the results in table 3, the sensory smoking effect produced by the electronic oil smoke in example 1 is sweeter, softer, finer, and thicker than that of the electronic oil smoke in comparative example 1, and the aftertaste of the oral cavity is slightly sweet, so that the electronic oil smoke can be favored by more users.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention can be made, and the same should be considered as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (5)
1. A method for preparing tobacco-flavored electronic lampblack comprises the following steps: (1) Mixing tobacco powder with water, glycerin and propylene glycol in a weight ratio of tobacco powder to water, glycerin and propylene glycol of 1:1-10:1-10:1-10, wherein the particle size of the tobacco powder is 0.01-1mm; (2) Distilling the obtained mixture and collecting volatile oil, wherein the step of collecting volatile oil comprises the following steps: collecting fraction with volatile oil extractor, cooling, and separating volatile oil with oil-water separator at 100-200 deg.C for 1-3 hr; (3) Mixing the volatile oil with propylene glycol, and filtering; and (4) adding glycerol and glucolactone into the obtained filtrate to obtain the tobacco-flavor electronic oil smoke.
2. The method according to claim 1, wherein, in step (3), the volatile oil is used in an amount of 0.5-2 wt% based on the weight of the propylene glycol.
3. The method of claim 1, wherein the filtration is membrane filtration, which is micron ceramic membrane filtration.
4. The method according to claim 1, wherein in step (4), the glycerol and gluconolactone are used in an amount of 10 to 20% by weight and 0.5 to 2% by weight, respectively, based on the weight of the filtrate.
5. A tobacco flavored e-liquid tobacco produced by the method of any one of claims 1-4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010298851.4A CN112369651B (en) | 2020-04-16 | 2020-04-16 | Tobacco-flavored electronic lampblack and preparation method thereof |
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| CN112369651A (en) | 2021-02-19 |
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