A tobacco natural color and flavor fraction and its preparation and application

Abstract

The invention discloses a method for extracting tobacco essence liquid and its application. The method adopts a multi-solvent system, and can extract most of the tobacco pigments while extracting tobacco flavor components. The essence liquid can be used for dyeing and flavoring cigarette paper, tipping paper, forming paper and filter parts, which is beneficial to improving the taste and smoking quality of cigarettes.

Description

Technical Field

[0001] The invention relates to a method for extracting tobacco essence liquid and application thereof, belonging to the field of cigarettes. Background Art

[0002] Tobacco wastes such as tobacco leaves, tobacco stems and tobacco dust contain a large amount of tobacco flavor substances, which can be used for flavoring tobacco products after extraction, greatly increasing the value of tobacco waste. However, the natural pigments contained in tobacco are also ignored, which can also be used, such as the colored cigarette paper that has emerged in recent years. Existing colored cigarette paper is mainly dyed with synthetic pigments or natural pigments. The use of synthetic pigments generally causes excessive heavy metals in cigarette paper. At the same time, synthetic pigments will crack and generate other intermediate cracking products during the burning process of cigarettes, thereby affecting the safety of cigarettes; while natural pigments generally have problems such as poor heat resistance and color stability, and because they are mostly derived from other plants, it is difficult to match the tobacco flavor characteristics, so adding them to cigarette paper will have a negative impact on the sensory quality of cigarettes. The natural pigments contained in tobacco leaves can effectively avoid the above shortcomings. They come from tobacco itself and will not have an adverse effect on the smoke sensory organs. Instead, they can improve the smoking quality of cigarettes.

[0003] Most of the tobacco extracts used in existing studies use water as a solvent for extraction. While extracting tobacco flavor substances, it is difficult to extract natural pigments in tobacco. If used for dyeing, the color will be low and the natural color of tobacco cannot be reflected. Therefore, developing a new extraction method to obtain a fine liquid with both the natural color and aroma of tobacco and using it in cigarette products has significant advantages and broad application prospects. Summary of the invention

[0004] In order to solve the technical problems that the existing methods have the difficulty in extracting the target aroma substances of the original color and original fragrance, the limited flavoring effect, the unsatisfactory original color dyeing effect, and the easy appearance of burning black lines, the first purpose of the present invention is to provide a method for preparing the original color and original fragrance essence fraction of tobacco, aiming to prepare an essence fraction (extract) having both the special aroma of neophytadiene and good original color effect.

[0005] The second purpose of the present invention is to provide a tobacco original color and original flavor fraction obtained by the preparation method.

[0006] The third object of the present invention is to provide the use of the tobacco original color and original flavor essence fraction obtained by the preparation method in tobacco products, as well as the original color and original flavor tobacco and its components obtained.

[0007] The present invention attempts to provide a tobacco extract that takes into account both the original color and original aroma of tobacco. However, the following technical difficulties are often encountered in the early stages of technical development: (1) It is difficult to effectively extract the new phytadiene aroma substances therein and it is difficult to achieve the original aroma effect; (2) It is difficult to effectively exert the original color dyeing effect; (3) It is easy to cause carbon accumulation on the surface during combustion, affecting the sensory organs and the smoking taste. In view of the above preparation difficulties, the present invention has proposed the following solutions after in-depth research:

[0008] A method for preparing a tobacco original color and original flavor fraction, comprising extracting tobacco raw materials in an extraction solvent to obtain the tobacco original color and original flavor fraction:

[0009] The extraction solvent is a mixed solvent of ethanol, water and normal hexane, wherein the volume percentage of ethanol is 60-95%; the volume percentage of normal hexane is 2-10%, and the balance is water.

[0010] The present invention has found that the use of the extraction solvent with the components and volume ratio can unexpectedly achieve synergy, can effectively extract the new phytadiene flavor substances in the tobacco raw materials, not only that, but also can unexpectedly effectively control the extraction of pigments and sugars, can improve its natural color dyeing effect, not only that, but also can effectively solve the problem of carbon accumulation on the combustion surface. Through the extraction process described in the present invention, the purpose of taking into account both the natural color and the original fragrance effect can be achieved.

[0011] In the present invention, the tobacco raw material can be any part of the tobacco plant and its products.

[0012] The tobacco raw material is at least one of tobacco leaves, tobacco stems and tobacco dust. The tobacco raw material can also be waste material containing at least one of tobacco leaves, tobacco stems and tobacco dust.

[0013] In the present invention, the tobacco raw material can be pulverized. For example, the size of the tobacco raw material is 10-200 meshes.

[0014] In the present invention, the control of the extraction solvent composition and volume concentration is the key to synergistically achieving the original color and the original aroma of neophytadiene and avoiding carbon deposition.

[0015] Preferably, in the extraction solvent, the volume percentage of ethanol is 75-86%; the volume percentage of n-hexane is 5-8%, and the balance is water.

[0016] In the present invention, the extraction may be 1 to N stage extraction, wherein N is greater than or equal to 2; preferably, it is a two-stage extraction.

[0017] The two stages are, for example: the tobacco raw material and the extraction solvent are subjected to a first stage of extraction in advance to obtain an extract and a residue, the residue is subjected to a second stage of extraction with a new extraction solvent to obtain a second stage of extract and a second stage of residue; the first stage of extract and the second stage of extract are combined to obtain the extract.

[0018] Preferably, the temperature during the extraction process is 30-50°C.

[0019] As a preference, the single-stage extraction time is 0.5-4 hours.

[0020] In the present invention, the extract obtained by extraction is allowed to settle at a temperature of -20-0°C to obtain a supernatant, which is then passed through a macroporous resin column and concentrated to obtain the original color and flavor fraction.

[0021] Preferably, the sedimentation time is 6-24 hours.

[0022] In the present invention, the solution flowing through the macroporous resin is concentrated, and the degree of concentration can be adjusted according to actual needs. For example, the solution can be concentrated to a solid content of 40%-60% in the original color and flavor fraction.

[0023] The preferred extraction process of the present invention is: the crushed tobacco raw material is mixed and stirred with the extraction solvent of the present invention, heated to 30-50°C for reaction for 0.5-4 hours, and the extract is filtered out for standby use. Then the same volume of the same solvent is added, and the temperature is continued to be raised to 30-50°C for reaction for 0.5-4 hours, and the extracts obtained twice are combined. It is placed at a temperature of -20-0°C and allowed to settle for 6-24 hours, and the supernatant of the tobacco extract is separated. The obtained tobacco supernatant is further subjected to adsorption and desorption treatment using a macroporous resin precipitation column to further remove the macromolecular substances therein. After concentration, a dark brown tobacco essence with a strong tobacco aroma is obtained, and its solid content is 40%-60%.

[0024] A further preferred solution of the present invention is to add a small molecule organic acid to the original color and original flavor essence liquid. Studies have found that adding a certain amount of organic acid can help improve the original color and original flavor effect, and further help to further improve the smoking taste.

[0025] Preferably, the small molecule organic acid is one or more of citric acid, malic acid, tartaric acid, lactic acid, acetic acid, etc.;

[0026] Preferably, the amount of small molecule organic acid added is 0.01-0.1% based on the weight of the original color and flavor liquid fraction.

[0027] The invention also provides the tobacco original color and original flavor fraction prepared by the preparation method.

[0028] In the present invention, the extract obtained by the preparation method contains the special components and content given by the preparation method. In addition, it has the special aroma of new phytadiene and the original aroma of tobacco, and can also avoid the problem of combustion and carbon deposition.

[0029] The present invention also provides an application of the tobacco original color and original flavor fraction prepared by the preparation method, which is used in the preparation of tobacco products.

[0030] In a preferred application, the tobacco product is a combustible cigarette;

[0031] Preferably, it is compounded in at least one of the cigarette components of cigarette paper, tipping paper, plugging paper and filter tip to prepare a cigarette component with tobacco natural color and / or natural aroma function. In the present invention, the fine liquid prepared by the preparation method is used for dyeing and flavoring cigarette paper, tipping paper, plugging paper and filter tip, which is beneficial to improving the taste and smoking quality of cigarettes.

[0032] Preferably, it is compounded on the cigarette component by coating, spraying or dipping.

[0033] The application of the present invention is used to prepare tobacco natural color and natural flavor cigarette paper, and the steps are:

[0034] The tobacco extract is diluted with water to a solid content of 20-40%, and then coated on cigarette paper, dried, rolled, and cut to obtain tobacco natural color and flavor cigarette paper; the coating amount is preferably 0.5-5g / m 2 ;

[0035] And / or, using it to prepare tobacco color and flavor plugging paper, the steps are: diluting the tobacco extract with water to a solid content of 5-20%, coating it on the inner side of the plugging paper, drying, rolling, and cutting to obtain tobacco color and flavor plugging paper; the coating amount is preferably 0.5-2g / m 2 ;

[0036] And / or, preparing tobacco color and flavor wrapping paper with it, the steps are: diluting the tobacco extract with water to a solid content of 5-10%, spraying it on the wrapping paper, drying, rolling, and cutting to obtain tobacco color and flavor wrapping paper, and the spraying amount is preferably 0.5-2g / m 2 ;

[0037] And / or, preparing a tobacco color and flavor filter rod by using the method, the steps are: diluting the tobacco extract with water to a solid content of 20-40%, immersing the filter rod in the extract for 1-2 hours, taking out, drying, cutting into pieces with a length of 1-10 mm, and then compounding with an ordinary filter rod to obtain a tobacco color and flavor filter rod.

[0038] The present invention also provides a tobacco natural color and natural flavor cigarette paper, which comprises the cigarette paper and the tobacco natural color and natural flavor extract prepared by the preparation method compounded on the surface of the cigarette paper.

[0039] The tobacco natural color and natural flavor cigarette paper of the present invention is prepared by the following steps:

[0040] The tobacco extract is diluted with water to a solid content of 20-40%, and then coated on cigarette paper, dried, rolled, and cut to obtain tobacco natural color and flavor cigarette paper; the coating amount is preferably 0.5-5g / m 2 .

[0041] The present invention also provides a tobacco natural color and natural flavor tipping paper, characterized in that it comprises tipping paper and the tobacco natural color and natural flavor extract prepared by the preparation method compounded on the surface of the tipping paper;

[0042] The preferred tobacco natural color and natural flavor tipping paper of the present invention is prepared by the following steps:

[0043] The tobacco extract is diluted with water to a solid content of 5-20%, and coated on the inner side of the plugging paper, dried, rolled, and cut to obtain the tobacco natural color and flavor plugging paper; the coating amount is preferably 0.5-2g / m 2 .

[0044] The present invention also provides a tobacco natural color and natural flavor forming paper, which comprises the forming paper and the tobacco natural color and natural flavor extract prepared by the preparation method compounded on the surface of the forming paper;

[0045] The preferred tobacco natural color and natural flavor wrapping paper of the present invention is prepared by the following steps:

[0046] The tobacco extract is diluted with water to a solid content of 5-10%, sprayed on the forming paper, dried, rolled, and cut to obtain tobacco natural color and flavor forming paper. The spraying amount is preferably 0.5-2g / m 2 .

[0047] The present invention also provides a tobacco original color and original flavor filter rod, which comprises a filter fiber round rod and the tobacco original color and original flavor extract prepared by the preparation method compounded therein;

[0048] The preferred tobacco natural color and natural flavor filter rod of the present invention is prepared by the following steps:

[0049] Dilute the tobacco extract with water to a solid content of 20-40%, immerse the filter rod in the extract for 1-2 hours, take it out for drying, cut it into pieces with a length of 1-10 mm, and then composite it with an ordinary filter rod to obtain a tobacco natural color and fragrance filter rod.

[0050] The present invention also provides a tobacco natural color and natural flavor burning type cigarette, which comprises at least one material selected from the tobacco natural color and natural flavor cigarette paper, the tobacco natural color and natural flavor tipping paper, the tobacco natural color and natural flavor forming paper, and the tobacco natural color and natural flavor filter rod.

[0051] Beneficial effects:

[0052] The present invention utilizes ethanol, water and n-hexane to cooperate with each other, and further controls the proportion of the mixture, so as to cooperate with each other and effectively extract the new phytadiene aroma substances in the tobacco raw material. In addition, the extraction of pigments and sugars can be unexpectedly and effectively controlled, so as to improve the natural color dyeing effect, and in addition, the problem of carbon accumulation on the combustion surface can be effectively solved. Through the extraction process of the present invention, the purpose of taking into account the natural color and the original aroma effect can be achieved.

[0053] The tobacco essence liquid prepared by the method of the present invention can be applied to the preparation of tobacco natural color and natural flavor cigarette paper, tipping paper, forming paper and filter rod, so that the cigarette products have new appearance and style characteristics. The extraction method is simple in process and convenient for large-scale production. At the same time, the tobacco essence liquid comes from the tobacco itself without additional addition, and the cigarette products have no safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 The pictures are Example 1 (left picture, slim cigarette) and Example 2 (right picture, medium cigarette) before and after dyeing;

[0055] Figure 2 The gas chromatograms of neophytadiene of the refined liquid obtained in Example 1, Comparative Example 1 and Comparative Example 2;

[0056] Figure 3 The burning diagram of the cigarettes of Example 1 and Comparative Example 3; DETAILED DESCRIPTION

[0057] The following examples are intended to illustrate the present invention rather than to further limit the scope of protection of the present invention.

[0058] Example 1

[0059] Take 1000g tobacco powder, particle size 50 mesh, disperse in 7000ml of mixed solvent composed of ethanol (5500ml), water (1000ml) and n-hexane (500ml), slowly heat to 45℃, keep warm for 2h, cool and stand, separate 3800ml of upper extract, continue to add 3800ml of the above mixed solvent to the residue, keep warm for 2h at 45℃, combine two batches of upper extract. Place at -20℃ and freeze for 24h, filter to remove precipitation, clear liquid (filtrate) flows through macroporous resin chromatography column, concentrate, obtain 1200ml of tobacco fine fraction A with solid content of 50%. The main chemical components are detected, wherein the sugar content is 32%, and the total alkali content is 2%. The GC determination is carried out, wherein the content of neophytadiene is 0.45%.

[0060] Add the prepared semen A citric acid, and dilute the fine liquid with water to a solid content of 25%. Use a coating machine to coat it on cigarette paper at a coating speed of 1m / s, dry it at 120℃, roll it up, and cut it to obtain tobacco color and flavor cigarette paper. The measured coating amount is 2.1g / m 2 After the cigarette paper was left for 24 hours, it was unfolded and found that the cigarette paper had uniform color, flat paper, and no sticking phenomenon. The cigarette paper was used to prepare cigarettes (thin cigarettes). The tobacco color and flavor cigarette paper showed the golden yellow of tobacco, uniform color, and no stickiness. The actual product is attached. Figure 1 (Left picture). Tobacco natural color and natural flavor cigarette paper presents the golden yellow color of tobacco, indicating that the dyeing effect of increasing the amount of tobacco essence coating is better. Compared with the sensory quality of the white cigarette paper control cigarette, the cigarettes produced by the cigarette paper trial have a higher aroma concentration and richer aroma, especially the original fragrance characteristics of the control cigarette are more prominent, the appearance quality remains stable, and its overall sensory quality is significantly improved.

[0061] Embodiment 2:

[0062] Compared with Example 1, the only difference is that the extraction solvent ratio is adjusted. The specific implementation process is as follows:

[0063] Take 1000g tobacco powder, particle size 50 mesh, disperse in 7000ml of mixed solvent composed of ethanol (6000ml), water (600ml) and n-hexane (400ml), slowly heat to 45℃, keep warm for 2h, cool and stand, separate 3700ml of upper extract, add 3700ml of the above mixed solvent to the residue first, keep warm at 45℃ for 2h, combine two batches of upper extract. Place at -20℃ and freeze for 24h, filter to remove precipitation, clear liquid (filtrate) flows through macroporous resin chromatography column, concentrate, obtain 1100ml tobacco extract B with solid content of 50%. The main chemical components are detected, and the sugar content is 30% and the total alkali content is 2%. GC determination is carried out, and the content of neophytadiene is 0.42%.

[0064] Add the prepared semen B The malic acid was added and the fine liquid was diluted with water to a solid content of 25%. The fine liquid was coated on the cigarette paper using a coating machine at a coating speed of 1 m / s, dried at 120°C, rolled up, and cut to obtain tobacco color and flavor cigarette paper. The measured coating amount was 2.0 g / m 2 After the cigarette paper was left for 24 hours, it was unfolded and found that the cigarette paper had uniform color, flat paper, and no sticking phenomenon. The cigarette paper was used to prepare cigarettes (medium sticks). The tobacco color and flavor cigarette paper showed the golden yellow of tobacco, uniform color, and no stickiness. The actual product is attached. Figure 1 ( Figure 1 Right picture). Tobacco natural color and natural flavor cigarette paper presents the golden yellow color of tobacco, indicating that the dyeing effect of increasing the amount of tobacco essence coating is better. Compared with the sensory quality of the white cigarette paper control cigarette, the cigarettes produced by the cigarette paper trial have a higher aroma concentration and richer aroma, especially the original fragrance characteristics of the control cigarette are more prominent, the appearance quality remains stable, and its overall sensory quality is significantly improved.

[0065] Example 3

[0066] The tobacco extract A prepared in Example 1 was added Lactic acid was diluted with water to a solid content of 20%, and coated on the inside of the tipping paper with a coating machine at a coating speed of 1.5 m / s. The paper was dried at 130°C, rolled up, and cut to obtain tobacco natural color and flavor tipping paper. The measured coating amount was 1.5 g / m 2 Cigarettes made with natural color and natural flavor tipping paper have a higher aroma concentration and richer aroma than the control cigarettes, and their appearance quality remains stable, and their overall sensory quality is significantly improved.

[0067] Example 4

[0068] The tobacco extract A prepared in Example 1 was added The lactic acid was diluted with water to a solid content of 10%, sprayed on the forming paper, dried at 110°C, rolled up, and cut to obtain tobacco color and flavor forming paper. The measured spraying amount was 0.6g / m 2 . Compared with the sensory quality of the control cigarettes, the cigarettes made with the tobacco flavor wrapping paper have a higher aroma concentration, richer aroma, stable appearance quality, and significantly improved overall sensory quality.

[0069] Example 5

[0070] The tobacco extract A prepared in Example 1 was added The lactic acid was diluted with water to a solid content of 25%, and the filter rod was placed in the diluted tobacco extract for 24 hours, dried at 130°C, cut into 8mm sections, and compounded to obtain the tobacco natural color and flavor filter rod. The tobacco natural color and flavor filter rod was used to prepare cigarettes. Compared with the sensory quality of the traditional acetate filter rod control cigarettes, the original color and flavor filter rod trial cigarettes had a higher aroma concentration, richer aroma, and a stable appearance quality, and its overall sensory quality was significantly improved.

[0071] Example 6

[0072] Compared with Example 1, the only difference is that no organic acid (citric acid) is added to the seminal fluid A, and the dyed cigarette paper and cigarettes are directly prepared according to the method of Example 1.

[0073] The steps are as follows: directly dilute the fine fraction A prepared in Example 1 with water to a solid content of 25%. Use a coating machine to coat it on cigarette paper at a coating speed of 1 m / s, dry it at 120°C, roll it up, and cut it to obtain tobacco color and flavor cigarette paper. The measured coating amount is 2.1 g / m 2 Compared with the sensory quality of the white cigarette paper (blank control, i.e. undyed) control cigarettes, the cigarettes produced with this cigarette paper have a higher aroma concentration and richer aroma, especially the original fragrance characteristics of the control cigarettes are more prominent, and the appearance quality remains stable, but at the same time, the irritation of the smoke is increased and the overall smoking quality is reduced.

[0074] Comparative Example 1

[0075] Compared with Example 1, the only difference is that no n-hexane is added to the extraction solvent, and the steps are:

[0076] Take 1000g tobacco powder, particle size 50 mesh, disperse in 7000ml of mixed solvent composed of ethanol (5500ml) and water (1500ml), slowly heat to 45℃, reflux for 2h, cool and stand, separate 3800ml of upper extract, add 3800ml of the above mixed solvent, continue to reflux for 2h at 45℃, combine two batches of upper extract. Place at -20℃ and freeze for 24h, filter to remove precipitation, separate the clear liquid by chromatography column, concentrate, and obtain 1350ml of tobacco extract C with a solid content of 50%. The main chemical components are detected, and the sugar content is 31% and the total alkali content is 2%. The GC determination shows that the content of neophytadiene is 0.03%.

[0077] Cigarette paper and cigarettes were prepared according to the method of Example 1. Compared with the sensory quality of the white cigarette paper control cigarette, the aroma concentration of the cigarettes produced by the cigarette paper trial was improved, but the fragrance characteristics disappeared completely, and the smoking style of the cigarette changed. According to gas chromatography testing, the content of neophytadiene with fragrance characteristics in the semen fraction was extremely low, see the attached Figure 2 b.

[0078] Comparative Example 2

[0079] Compared with Example 1, the only difference is that an equal volume of ethyl acetate is used to replace n-hexane, and the steps are:

[0080] Take 1000g tobacco powder, particle size 50 mesh, disperse in 7000ml of mixed solvent composed of ethanol (5500ml), water (1000ml) and ethyl acetate (500ml), slowly heat to 45℃, keep warm for 2h, cool and stand, separate 3600ml of upper extract, add 3600ml of the above mixed solvent to the residue, continue to treat at 45℃ for 2h, combine two batches of upper extract. Place at -20℃ and freeze for 24h, filter to remove precipitate, separate the clear liquid by chromatography column, concentrate, obtain 1200ml tobacco extract D with solid content of 50%. The main chemical components are detected, and the sugar content is 32% and the total alkali content is 2%. The GC determination shows that the content of neophytadiene is 0.12%.

[0081] Cigarette paper and cigarettes were prepared according to the method of Example 1. Compared with the sensory quality of the white cigarette paper (undyed) control cigarette, the aroma concentration of the cigarettes produced by the cigarette paper trial was improved, but the fragrance characteristics were significantly lower than those in Example 1, and the smoking style of the cigarettes changed. According to gas chromatography testing, the content of neophytadiene with fragrance characteristics in the semen fraction was significantly lower than that in Example 1, as shown in the attached Figure 2 c.

[0082] Comparative Example 3

[0083] Compared with Example 1, the only difference is that the content of the extraction solvent is not controlled within the scope of the present invention, and the steps are:

[0084] Take 1000g tobacco powder, particle size 50 mesh, disperse in 7000ml of mixed solvent composed of ethanol (3500ml), water (3000ml) and n-hexane (500ml), slowly heat to 45℃, keep warm for 2h, cool and stand, separate 3900ml of upper extract, add 3900ml of the above mixed solvent to the residue, keep warm for 2h at 45℃, combine two batches of upper extract. Put it in -20℃ and freeze it for 24h, filter it to remove the precipitate, separate the clear liquid by chromatography column, concentrate it, and obtain 1500ml of tobacco extract E with solid content of 50%. The main chemical components are tested, and the sugar content is 43% and the total alkali content is 2%.

[0085] Cigarette paper and cigarettes were prepared according to the method of Example 1. Compared with the sensory quality of the white cigarette paper (blank control, i.e., undyed) control cigarette, the cigarettes produced by the trial cigarette paper had a higher aroma concentration and richer aroma, especially the original fragrance characteristics of the control cigarettes were more prominent, but compared with the control sample, the charcoal line became wider and blackened when the cigarette was burned, and the appearance quality was reduced. See the attached Figure 3 .

Claims

1. A method for preparing a liquid fraction of tobacco natural color and flavor, characterized in that: The tobacco raw material is placed in an extraction solvent for extraction to obtain the tobacco essence liquid: The extraction solvent is a mixed solvent of ethanol, water and n-hexane, wherein the volume percentage of ethanol is 60-95%; the volume percentage of n-hexane is 2-10%, and the balance is water.

2. The method for preparing the tobacco natural color and aroma extract according to claim 1, characterized in that: In the extraction solvent, the volume percentage of ethanol is 75-86%; the volume percentage of n-hexane is 5-8%, and the balance is water.

3. The method for preparing the tobacco natural color and aroma extract according to claim 1, characterized in that: The tobacco raw material is at least one of tobacco leaves, tobacco stems and tobacco dust.

4. The method for preparing the tobacco natural color and aroma extract according to claim 3, characterized in that: The size of the tobacco raw material is 10-200 mesh.

5. The method for preparing the tobacco natural color and aroma extract according to claim 1, characterized in that: The extraction process consists of two stages.

6. The method for preparing the tobacco natural color and aroma extract according to claim 5, characterized in that: The temperature of the extraction process is 30-50°C, and the single-stage extraction time is 0.5-4 hours.

7. The method for preparing the tobacco natural color and aroma extract according to claim 1, characterized in that: The extracted solution is allowed to settle at a temperature of -20-0°C to obtain a supernatant, which is then passed through a macroporous resin column and concentrated to obtain the original color and flavor fraction.

8. The method for preparing the tobacco natural color and aroma extract according to claim 7, characterized in that: The sedimentation time is 6-24 hours.

9. The method for preparing the tobacco natural color and aroma extract according to claim 7, characterized in that: The solid content of the original color and flavor liquid is 40%-60%.

10. The method for preparing the tobacco natural color and flavor extract according to any one of claims 1 to 9, characterized in that: A small molecule organic acid is added to the original color and flavor essence fraction.

11. The method for preparing the tobacco natural color and aroma extract according to claim 10, characterized in that: The small molecule organic acid is one or more of citric acid, malic acid, tartaric acid, lactic acid and acetic acid.

12. The method for preparing the tobacco natural color and aroma extract according to claim 11, characterized in that: Based on the weight of the original flavor liquid, the amount of small molecule organic acid added is 0.01~0.1%.

13. A tobacco essence liquid fraction prepared by the preparation method according to any one of claims 1 to 12.

14. An application of the tobacco original color and original flavor fraction prepared by the preparation method according to any one of claims 1 to 12, characterized in that: It is used in the preparation of tobacco products.

15. The use of the tobacco original color and original flavor liquid fraction as claimed in claim 14, characterized in that: The tobacco product is a burning cigarette.

16. The use of the tobacco original color and original flavor liquid fraction according to claim 14, characterized in that: The compound is compounded into at least one cigarette component among cigarette paper, tipping paper, shaping paper and filter tip to prepare a cigarette component with tobacco original color and / or original aroma function.

17. The use of the tobacco original color and original flavor liquid fraction according to claim 16, characterized in that: The composite material is compounded on the cigarette component by coating, spraying or dipping.

18. The use according to claim 16, characterized in that The method is used to prepare tobacco natural color and natural flavor cigarette paper, and the steps are as follows: The tobacco extract is diluted with water to a solid content of 20-40%, and then coated on cigarette paper, dried, rolled, and cut to obtain tobacco natural color and flavor cigarette paper; the coating amount is 0.5-5g / m 2 ; And / or, using it to prepare tobacco color and flavor plugging paper, the steps are: diluting the tobacco extract with water to a solid content of 5-20%, coating it on the inside of the plugging paper, drying, rolling, and cutting to obtain tobacco color and flavor plugging paper; the coating amount is 0.5-2g / m 2 ; And / or, preparing tobacco color and flavor forming paper with the same, the steps are: diluting the tobacco extract with water to a solid content of 5-10%, spraying the tobacco extract on the forming paper, drying, rolling, and cutting to obtain tobacco color and flavor forming paper, the spraying amount is 0.5-2g / m 2 ; And / or, preparing a tobacco original color and original flavor filter rod by using the method, the steps are: diluting the tobacco essence liquid with water to a solid content of 20-40%, immersing the filter rod in the essence liquid for 1-2 hours, taking out, drying, cutting into pieces with a length of 1-10 mm, and then compounding with an ordinary filter rod to obtain a tobacco original color and original flavor filter rod.

19. A tobacco natural color and flavor cigarette paper, characterized in that: The invention comprises cigarette paper and a tobacco original color and original aroma extract prepared by any one of the preparation methods of claims 1 to 12 which is compounded on the surface of the cigarette paper.

20. The tobacco natural color and flavor cigarette paper according to claim 19, characterized in that: It is prepared by the following steps: The tobacco extract is diluted with water to a solid content of 20-40%, and then coated on cigarette paper, dried, rolled, and cut to obtain tobacco natural color and flavor cigarette paper; the coating amount is 0.5-5g / m 2 .

21. A tobacco natural color and flavor tipping paper, characterized in that: The invention comprises tipping paper and a tobacco original color and original aroma extract prepared by any one of the preparation methods of claims 1 to 12 which is compounded on the surface of the tipping paper.

22. The tobacco natural color and flavor tipping paper according to claim 21, characterized in that: It is prepared by the following steps: The tobacco extract is diluted with water to a solid content of 5-20%, and coated on the inside of the tipping paper, dried, rolled, and cut to obtain the tobacco natural color and flavor tipping paper; the coating amount is 0.5-2g / m 2 .

23. A tobacco natural color and flavor forming paper, characterized in that: The invention comprises a forming paper and a tobacco original color and original aroma extract prepared by any one of the preparation methods of claims 1 to 12 which is compounded on the surface of the forming paper.

24. The tobacco natural color and flavor wrapping paper according to claim 23, characterized in that: It is prepared by the following steps: Dilute the tobacco extract with water to a solid content of 5-10%, spray it on the forming paper, dry it, roll it up, and cut it to obtain the tobacco natural color and flavor forming paper. The spraying amount is 0.5-2g / m 2 .

25. A tobacco natural color and flavor filter rod, characterized in that: The invention comprises a filter fiber round rod and a tobacco original color and original aroma extract prepared by any preparation method of claims 1 to 12.

26. The tobacco natural color and natural flavor filter rod according to claim 25, characterized in that: It is prepared by the following steps: The tobacco extract is diluted with water to a solid content of 20-40%, the filter rod is immersed in the extract for 1-2 hours, taken out for drying, cut into pieces with a length of 1-10 mm, and then composited with an ordinary filter rod to obtain a tobacco natural color and fragrance filter rod.

27. A tobacco natural color and flavor burning type cigarette, characterized in that: It comprises at least one material selected from the tobacco natural color and flavor cigarette paper according to any one of claims 19 to 20, the tobacco natural color and flavor tipping paper according to any one of claims 21 to 22, the tobacco natural color and flavor forming paper according to any one of claims 23 to 24, and the tobacco natural color and flavor filter rod according to any one of claims 25 to 26.

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