CN117837799A - Method for preparing tobacco flavoring from low-grade tobacco leaves - Google Patents
Method for preparing tobacco flavoring from low-grade tobacco leaves Download PDFInfo
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- CN117837799A CN117837799A CN202410173868.5A CN202410173868A CN117837799A CN 117837799 A CN117837799 A CN 117837799A CN 202410173868 A CN202410173868 A CN 202410173868A CN 117837799 A CN117837799 A CN 117837799A
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- 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
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
- A24B15/26—Use of organic solvents for extraction
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- 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
- A24B15/18—Treatment of tobacco products or tobacco substitutes
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Abstract
The invention provides a method for preparing a spice for low-grade tobacco leaves, which comprises the steps of reacting a low-grade tobacco leaf high-temperature high-pressure reaction product with dry distillation tobacco dust at a high-temperature high-pressure reaction product mass ratio of 2-100:1, and mixing to obtain the tobacco flavor. According to the invention, the low-grade tobacco leaf processing products with characteristics are obtained by designing the spice for preparing the low-grade tobacco leaves by dry distillation, high-temperature high-pressure processing and direct high-temperature high-pressure processing, and the spice can be added with the spice after blending, so that the spice can be used for traditional cigarette flavoring, economic benefits are generated, and a set of environment-friendly and sustainable low-grade tobacco leaf processing scheme is formed.
Description
Technical Field
The invention relates to an inapplicable tobacco processing device, in particular to a method for extracting plant-based nicotine from low-grade tobacco leaves.
Background
Tobacco is an agricultural product, the quality fluctuation among years is large, the quality difference among different grades and different parts is large, the purchasing standard of the tobacco is not refined enough, the quality of the tobacco which is transferred by a cigarette industry enterprise is unbalanced due to the influence of factors such as the difference of eye lights of grading staff, and the like, part of the tobacco has uncoordinated chemical components (the starch content is higher, the sugar and sugar alkali ratio is low), the smoke is rough, the miscellaneous gases are obvious, and the like, the smoking quality of the cigarette can be seriously influenced when the tobacco enters a formula for use, serious negative influence is brought to the cigarette brand, and more low-grade tobacco is accumulated in daily accumulating and monthly stock, so that a large amount of funds are occupied, and sustainable development of the industry enterprise is not facilitated.
The low-grade tobacco leaves cannot be directly added into cigarettes, so that processing treatment is needed, and the availability of the low-grade tobacco leaves is explored.
Disclosure of Invention
The invention aims to provide a spice for preparing low-grade tobacco leaves, which is characterized in that low-grade tobacco leaf treatment products with characteristics are obtained by dry distillation, high-temperature high-pressure treatment and direct high-temperature high-pressure treatment respectively, and the fragrance richness can be increased and the fragrance coordination can be improved after blending.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a method for preparing perfume for low-grade tobacco leaves, which comprises the following steps:
s1: the low-grade tobacco leaves A are crushed to obtain low-grade tobacco leaf powder with the grain diameter of 0.6-2 mm; the low-grade tobacco leaf powder is prepared by using N 2 Carrying out carbonization treatment on the distilled gas in a carbonization device to obtain carbonized tobacco powder;
the carbonization device comprises a carbonization reaction system and a gas-solid separation system which are sequentially connected in series; the carbonization reaction system comprises a fluidized bed (F), a preheater (X) connected with the bottom of the fluidized bed (F) and N communicated with the bottom of the fluidized bed through the preheater (X) 2 A steel cylinder; the gas-solid separation system is connected with the top of the fluidized bed (F); a fluidized bed feed inlet is arranged at the lower part of the fluidized bed (F); the low-grade tobacco leaf powder enters the fluidized bed from the feed inlet of the fluidized bed by taking nitrogen as carrier gas, and the set temperature of the preheater (X) is 85-95 ℃ (preferably 90 ℃); the N is 2 Steel cylinder is filled with N 2 The flow rate of (1) is 15-30L/min (20L/min in the embodiment of the present invention); the obtained gas-solid product enters a gas-solid separation system, and the obtained solid is the dry distillation tobacco powder;
soaking the dry distillation tobacco powder in propylene glycol A for 12-24 hours (preferably 16 hours), reacting the obtained soaking liquid in inert atmosphere A (preferably nitrogen atmosphere) at 110-130 ℃ (preferably 120 ℃), under 1.8-2.2MPa (preferably 2.0 MPa) for 1.5-2.5 hours (preferably 2 hours), adding an organic solvent A into the obtained reaction liquid A, uniformly stirring, and filtering to obtain filtrate, namely a dry distillation tobacco powder high-temperature and high-pressure reaction product;
the mass ratio of the dry distillation tobacco powder to the propylene glycol B is 1:1-2 (preferably 1:1.5); the organic solvent A is propylene glycol, glycerol or a mixed solvent of the propylene glycol and the glycerol (preferably propylene glycol); the mass ratio of the reaction liquid A to the organic solvent A is 1:14-29 (preferably 1:19);
s2: soaking the low-grade tobacco leaves B in propylene glycol B for 12-24 hours (preferably 16 hours), reacting the obtained soaking liquid in inert atmosphere B (preferably nitrogen atmosphere) at 110-130 ℃ (preferably 120 ℃), under 1.8-2.2MPa (preferably 2.0 MPa) for 1.5-2.5 hours (preferably 2 hours), adding an organic solvent B into the obtained reaction liquid B, stirring uniformly, and performing filter pressing to obtain filtrate, namely a low-grade tobacco leaves high-temperature and high-pressure reaction product;
the mass ratio of the low-grade tobacco leaves B to the propylene glycol B is 1:1-2 (preferably 1:1.5); the organic solvent B is propylene glycol, glycerol or a mixed solvent of the propylene glycol and the glycerol (preferably propylene glycol); the mass ratio of the reaction liquid B to the organic solvent B is 1:1-2 (preferably 1:1.4);
s3: and (2) mixing the low-grade sheet tobacco leaf high-temperature high-pressure reaction product obtained in the step (S2) with the dry distillation tobacco powder high-temperature high-pressure reaction product obtained in the step (S1) according to the mass ratio of 2-100:1 (preferably 2-10:1, particularly preferably 5:1) to obtain the tobacco flavor.
Experiments show that the difference between the products obtained by the reaction and the reaction of adding all propylene glycol is larger, the separation of the fragrant substances is facilitated by the reaction and the dilution, and a small amount of solvent is added in the early stage, so that the tobacco shreds have a certain coking phenomenon, and the burnt sweet fragrance is improved
Further, in the step S1, the dry distillation device further includes a tobacco raw material processing system, where the tobacco raw material processing system includes a primary bin (a), a secondary bin (B), an arch breaker (C), a feeder (D) and a feeder (E) that are sequentially connected in series; the feeder (E) is connected with the fluidized bed feed inlet; and a nitrogen inlet is formed in the top of the secondary bin (B).
When the device is started, the low-grade tobacco leaves A enter a fluidized bed through a tobacco raw material treatment system.
Further, in the step S1, the gas-solid separation system further includes a cyclone separator (G), a cyclone buffer tank (H), and a cyclone storage tank (I) connected in series in order; the cyclone separator (G) is connected to the top of the fluidized bed (F).
The cyclone buffer tank H and the cyclone storage tank I are used for collecting tobacco dust.
Some of the lines in fig. 1 are not used in the present invention and are not limited to the protection scope of the present invention.
Further, the dry distillation temperature of the rapid dry distillation reaction in the step S1 is 85-95 ℃. (this step is mainly used for baking tobacco shreds, and has no effect in low-temperature baking, and the loss of aroma components can be caused by high temperature)
Further, the parameters of the high-temperature high-pressure reaction in the steps S1 and S2 are as follows: the temperature is 110-140 ℃, the pressure is 1.8-2.2MPa, and the reaction time is 1-2.5 hr. The lower temperature is unfavorable for the reaction, the obtained aroma substances are less, and the excessive temperature can generate secondary side reaction.
Further, the low-grade tobacco leaf high-temperature high-pressure treatment product is obtained by the following steps: step a: adding the low-grade tobacco leaves into an organic solvent to obtain low-grade tobacco leaf dipping liquid; step b: c, carrying out high-temperature high-pressure reaction on the low-grade tobacco leaf immersion liquid obtained in the step a to obtain a high-temperature high-pressure reaction product; step c: and d, diluting and filtering the high-temperature and high-pressure reaction product obtained in the step b to obtain the low-grade tobacco leaf direct high-temperature and high-pressure treatment product.
Further, in the step a, the low-grade tobacco leaf is added into propylene glycol or glycerin with the weight being 1-2 times that of the low-grade tobacco leaf, and the low-grade tobacco leaf dipping liquid is obtained.
Further, in the step a, the low-grade tobacco leaf is added into propylene glycol or glycerin with the weight being 1-2 times that of the low-grade tobacco leaf, and soaked for 12-24 hours, so that the low-grade tobacco leaf soaking liquid is obtained.
Further, the parameters of the high temperature and high pressure reaction in the step a are as follows: the temperature is 110-140 ℃, the pressure is 1.8-2.2MPa, and the reaction time is 1-2.5 hr.
Further, in the step b, propylene glycol or glycerin with the weight 1.0-2.0 times of that of the cooled high-temperature high-pressure reaction product is added for stirring and dilution, and the low-grade tobacco leaf direct high-temperature high-pressure treatment product is obtained after squeezing and gauze filtration.
And step S2, the filter pressing is the squeezing and gauze filtering.
The letters of the low-grade tobacco leaf A, B, the propylene glycol A, B, the inert atmosphere A, B, the organic solvent A, B and the like are only used for distinguishing substances in different stages, and are convenient to describe without other special meanings.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the low-grade tobacco leaf processing products with characteristics are obtained by designing the spice for preparing the low-grade tobacco leaves by dry distillation, high-temperature high-pressure processing and direct high-temperature high-pressure processing, and the spice can be added with the spice after blending, so that the spice can be used for traditional cigarette flavoring, economic benefits are generated, and a set of environment-friendly and sustainable low-grade tobacco leaf processing scheme is formed.
Drawings
FIG. 1 is a schematic diagram of a retorting system of the present invention;
FIG. 2 is a component chromatogram of the low-grade tobacco leaf retorting and high-temperature high-pressure treatment product of the invention;
FIG. 3 is a component chromatogram of the direct high temperature high pressure treatment product of the low-grade tobacco leaf of the present invention;
wherein reference numerals are as follows:
A. a first-stage storage bin; B. a second-level stock bin; C. an arch breaking machine; D. a feeder; E. a feeder; F. a fluidized bed; G. a cyclone separator; H. a cyclone buffer tank; I. a cyclone storage tank; w, a tail gas treatment system; x, a preheater.
Detailed Description
The detailed features and advantages of the present invention will be readily apparent to those skilled in the art from that description, claims, and drawings.
In the following examplesLow-grade tobacco leaf purchaseTianchang International tobacco Limited, henan BCM flue-cured tobacco.
EXAMPLE 1 Low-grade tobacco leaf destructive distillation and high-temperature high-pressure treatment
The preparation method of the low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment product comprises the following steps:
step A: and carrying out dry distillation on the low-grade tobacco leaves to obtain dry distillation tobacco powder. The low-grade tobacco leaves are subjected to carbonization by a carbonization system, as shown in fig. 1, wherein the carbonization system comprises a low-grade tobacco leaf raw material processing system, a carbonization reaction system and a gas-solid separation system.
Wherein:
step A-1: the low-grade tobacco leaves are pretreated by a tobacco leaf raw material treatment system to form tobacco leaf raw materials and then are sent into a carbonization reaction system. The low-grade tobacco raw material treatment system comprises a first-grade bin A, a second-grade bin B, an arch breaker C, a feeder D and a feeder E, and can stably, continuously and quantitatively send the low-grade tobacco raw materials into the carbonization reaction system. (the range of D1 of the crushed low-grade tobacco leaves is 0.6-2 mm, the crushed low-grade tobacco leaves are sent into a first-grade storage bin A and then fall into a second-grade storage bin B, and enter a carbonization system through a feeder D and a feeder E, wherein the flow rate of nitrogen entering is controlled at 15-30L/min)
Step A-2: the low-grade tobacco raw materials undergo rapid carbonization reaction in a carbonization reaction system to generate carbonization products comprising carbonization gas and carbonization tobacco dust, and the carbonization products are sent into a gas-solid separation system. The carbonization reaction system comprises a fluidized bed F and a preheater X, wherein the preheater X is arranged at the bottom of the fluidized bed F, and the bottom and N are respectively arranged at the bottom 2 The steel cylinders are communicated, so that the fluidized gas is heated by nitrogen and then is introduced into the fluidized bed F for carbonization to generate carbonization gas, wherein the carbonization temperature of the fluidized bed F is 85-95 ℃, preferably 90 ℃, and the carbonization gas is sent into a gas-solid separation system to separate out carbonization tobacco powder, and the time is controlled within 3S.
Step A-3: and the dry distillation product is subjected to a gas-solid separation system to obtain dry distillation tobacco powder. The gas-solid separation system comprises a cyclone separator G, a cyclone buffer tank H and a cyclone storage tank I. The cyclone separator G is used for separating gas phase aroma components in the dry distillation gas and dry distillation tobacco dust, and gas-solid phase products obtained by dry distillation are recovered in the cyclone buffer tank H and the cyclone storage tank I after being separated by the first-stage cyclone separator G.
And (B) step (B): adding 1-2 times of propylene glycol or glycerin, preferably 1.5 times of propylene glycol, into the dry distillation tobacco powder obtained in the step A to obtain dry distillation tobacco powder immersion liquid;
step C: and C, carrying out high-temperature high-pressure reaction on the dry distillation tobacco powder immersion liquid obtained in the step B. The parameters of the high-temperature high-pressure reaction are as follows: the temperature is 110-140 ℃, the pressure is 1.8-2.2MPa, and the reaction time is 1-2.5 hr; preferred parameters are: the temperature is 120 ℃, the pressure is 2.0MPa, the reaction time is 2.0hr, and the high-temperature high-pressure reaction product is obtained;
step D: adding 14-29 times of propylene glycol or glycerol by weight into the high-temperature high-pressure reaction product obtained in the step C for dilution, preferably 19 times of propylene glycol; the solution obtained after the warp cloth is filtered is the low-grade tobacco dry distillation and high-temperature high-pressure treatment product.
In a specific experiment, 0.86kg of low-grade tobacco leaves are taken in the step A, and are pretreated by a tobacco leaf raw material treatment system to form tobacco leaf raw materials, and then the tobacco leaf raw materials are sent into a carbonization reaction system. The carbonization temperature of the fluidized bed F is set to 90 ℃, and the carbonization gas is sent into a gas-solid separation system, so that 0.80kg of separated carbonization tobacco powder is obtained from a cyclone storage tank I.
In the step B, C, 1.2kg of propylene glycol is added into 0.80kg of dry distillation tobacco powder, and then the high-temperature and high-pressure reaction is carried out, wherein the reaction temperature is 120 ℃, the pressure is 2.0MPa, and the reaction time lasts for 2.0hr. The flow rate of nitrogen gas is controlled at 20L/min.
In the step D, 38kg of propylene glycol is added into 2kg of high-temperature high-pressure reaction products, and after stirring and dilution, the solution obtained after filtering by gauze is the low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment product.
The components of the low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment products are analyzed by adopting an HS-SPME-GC-MS method, and a chromatogram shown in figure 2 is obtained. It can be known that the low-grade tobacco leaves after the carbonization treatment contain the following components:
the low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment product is obtained by the method, and the relative content of nicotine, furfural, pyridine and furans baking aroma components is increased.
The low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment products are added into the traditional cigarettes according to the dosage of the flavoring materials, and the smokers are identified after carrying out sensory evaluation according to GB5606.4-2005, so that the problems of high strength, strong irritation and heavy miscellaneous gases caused by the low-grade tobacco leaf can be solved compared with the case that the unsuitable tobacco is directly added into the traditional cigarettes.
EXAMPLE 2 Low-pass tobacco leaf high temperature high pressure treatment
The invention provides a low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment product, which comprises the following steps:
step A: adding low-grade tobacco leaves into propylene glycol or glycerin with the weight being 1-2 times that of the low-grade tobacco leaves, and preferably adding propylene glycol with the weight being 1.5 times that of the low-grade tobacco leaves; soaking for 12-24 hours, preferably 16 hours; obtaining low-grade tobacco leaf dipping liquid.
And (B) step (B): and C, carrying out high-temperature high-pressure reaction on the low-grade tobacco leaf immersion liquid obtained in the step A. The parameters of the high-temperature high-pressure reaction are as follows: the temperature is 110-140 ℃, the pressure is 1.8-2.2MPa, and the reaction time is 1-2.5 hr; preferred parameters are: the temperature is 120 ℃, the pressure is 2.0MPa, the reaction time is 2.0hr, and the high-temperature high-pressure reaction product is obtained.
Step C: adding 1.0-2.0 times of propylene glycol or glycerin by weight into the high-temperature high-pressure reaction product obtained in the step B for dilution, and preferably 1.4 times of propylene glycol; the solution obtained after squeezing and filtering with gauze is the product of direct high-temperature and high-pressure treatment of the low-grade tobacco leaves.
In one specific experiment, 0.8kg of low-grade tobacco leaf was taken, and 1.2kg of propylene glycol was added thereto and then soaked for 16 hours. Then high temperature and high pressure reaction is carried out, the reaction temperature is 120 ℃, the pressure is 2.0MPa, and the reaction time lasts for 2.0hr.
2.8kg of propylene glycol is added into 2kg of high-temperature high-pressure reaction products, and 2.7kg of solanone solution is obtained after stirring, squeezing and gauze filtering, namely the low-grade tobacco leaves are directly treated at high temperature and high pressure.
The components of the direct high-temperature high-pressure treatment product of the low-grade tobacco leaves are analyzed by adopting an HS-SPME-GC-MS method, and a chromatogram shown in figure 3 is obtained. It can thus be seen that the solution contains the following components:
| No. | composition of the components | Mass ratio |
| 1 | Propylene glycol | 28.4％ |
| 3 | Solananone | 12.11％ |
| 2 | Plant alcohols | 10.87％ |
| 4 | Palmitic acid methyl ester | 3.34％ |
| 5 | Methyl linoleate | 1.30％ |
| 6 | Nicotine | 1.45％ |
| 7 | Glucose | 1.202‰ |
| 8 | Fructose | 2.744‰ |
| 9 | Maltose | 0.054‰ |
| 10 | Sucrose | 0.181‰ |
| 11 | Malic acid | 1.174‰ |
| 12 | Citric acid | 0.020‰ |
| 13 | Lactic acid | 0.308‰ |
The low-grade tobacco leaf obtained by the method has a large amount of substances such as solanone, plant alkali, nicotine, esters, saccharides, organic acid and the like, and can be added into traditional cigarettes to improve the flavor.
The low-grade tobacco leaves are directly added into the traditional cigarettes according to the dosage of the flavoring materials, sensory evaluation is carried out according to GB5606.4-2005, and the smoke quality can be obviously improved compared with the case that the low-grade tobacco leaves are directly added into the traditional cigarettes and inapplicable tobacco leaves are not only solved, but also the problems of high strength, strong irritation and heavy impurity caused by the low-grade tobacco leaves can be solved.
EXAMPLE 3 Low-grade tobacco flavoring blending
And (3) blending the low-grade tobacco leaf dry distillation and high-temperature and high-pressure treatment product prepared in the embodiment 1 and the low-grade tobacco leaf direct high-temperature and high-pressure treatment product prepared in the embodiment 2 according to the weight ratio of raw materials of 1:2-1:100. In a specific experiment, after 1kg of low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment product (corresponding to 0.023kg of low-grade tobacco leaf raw material) and 5kg of low-grade tobacco leaf direct high-temperature high-pressure treatment product (corresponding to 0.023kg of low-grade tobacco leaf raw material) are mixed, the mixture is added into a traditional cigarette according to the dosage of flavoring, and after sensory evaluation by a smoker according to GB5606.4-2005, the mixture is identified, compared with the case that the mixture is directly added into the traditional cigarette, the mixture is not applicable to tobacco, the tobacco fragrance is richer, the hay fragrance is more outstanding, the smoke caking property is better, and the aftertaste sweet feeling is stronger.
The components of the direct high-temperature and high-pressure treatment product of the low-grade tobacco leaf and the dry distillation and high-temperature and high-pressure treatment product of the low-grade tobacco leaf are analyzed by adopting an HS-SPME-GC-MS method, the following table is shown, and the respective relative contents obtained by an area normalization method are provided:
as can be obtained by combining fig. 2 and 3, the direct high-temperature high-pressure treatment products of the low-grade tobacco leaves have more detected peaks, and most of the commonly detected peaks have higher responses than the dry distillation and high-temperature high-pressure treatment products of the low-grade tobacco leaves; the low-grade tobacco leaf dry distillation and high-temperature high-pressure treatment products totally identify 62 components, and substances with relatively high content except the solvent propylene glycol comprise plant alcohol, solanone, nicotine, methyl palmitate, cembratriene glycol and the like; 91 components are identified from the low-grade tobacco directly treated products at high temperature and high pressure, and substances with relatively high content except the solvent propylene glycol are solanone, plant alcohol, nicotine, geranylacetone, megastigmatrienone, cembratriene glycol, methyl palmitate, methyl linoleate, methyl linolenate and the like; in the two samples, the components which are obviously high or additionally detected in the low-grade tobacco leaf direct high-temperature high-pressure treatment product mainly comprise solanone, geranylacetone, megastigmatrienone, acetic acid, furfuryl alcohol, ionene and the like.
The terms and expressions which have been employed herein are used as terms of description and not of limitation. The use of these terms and expressions is not meant to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications are possible and are intended to be included within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents. Also, it should be noted that while the present invention has been described with reference to the particular embodiments presently, it will be appreciated by those skilled in the art that the above embodiments are provided for illustration only and that various equivalent changes or substitutions may be made without departing from the spirit of the invention, and therefore, the changes and modifications to the above embodiments shall fall within the scope of the claims of the present invention as long as they are within the true spirit of the invention.
Claims (10)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190045835A1 (en) * | 2016-04-22 | 2019-02-14 | Japan Tobacco Inc. | Flavor source manufacturing method |
| CN110959894A (en) * | 2018-09-26 | 2020-04-07 | 浙江中烟工业有限责任公司 | Tobacco-flavored cut tobacco functional spice composition and preparation method and application thereof |
| CN113749281A (en) * | 2021-09-20 | 2021-12-07 | 河南中烟工业有限责任公司 | Method for preparing tobacco flavor by using waste tobacco leaves and application of tobacco flavor |
| CN115039901A (en) * | 2022-05-19 | 2022-09-13 | 河北中烟工业有限责任公司 | Tobacco flavor and preparation method thereof and heated cigarette |
| CN115844048A (en) * | 2022-12-02 | 2023-03-28 | 浙江中烟工业有限责任公司 | Harmless treatment method for inapplicable tobacco leaves |
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- 2024-02-07 CN CN202410173868.5A patent/CN117837799A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190045835A1 (en) * | 2016-04-22 | 2019-02-14 | Japan Tobacco Inc. | Flavor source manufacturing method |
| CN110959894A (en) * | 2018-09-26 | 2020-04-07 | 浙江中烟工业有限责任公司 | Tobacco-flavored cut tobacco functional spice composition and preparation method and application thereof |
| CN113749281A (en) * | 2021-09-20 | 2021-12-07 | 河南中烟工业有限责任公司 | Method for preparing tobacco flavor by using waste tobacco leaves and application of tobacco flavor |
| CN115039901A (en) * | 2022-05-19 | 2022-09-13 | 河北中烟工业有限责任公司 | Tobacco flavor and preparation method thereof and heated cigarette |
| CN115844048A (en) * | 2022-12-02 | 2023-03-28 | 浙江中烟工业有限责任公司 | Harmless treatment method for inapplicable tobacco leaves |
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