Preparation method of flavored cut tobacco and application thereof

Abstract

The application provides a preparation method of flavored tobacco shreds and application thereof, and the preparation method comprises the following steps: mixing tobacco leaves with flavoring materials after the tobacco leaves are cut into shreds, then carrying out temperature and humidity increasing, passing through a drying process, carrying out sealing treatment, removing the flavoring materials after standing, and finally obtaining the flavored tobacco shreds, wherein the flavoring materials comprise a combination of tea powder and stevia leaf powder. Through the mixing and stir-frying of the tobacco shreds and the flavoring materials in the leaf shred drying process, the exogenous flavor is absorbed and transferred to the tobacco shreds, then the flavoring materials are screened out, and the tobacco shreds are endowed with more uniform and more characteristic characteristic aroma.

Description

Technical Field

[0001] This invention belongs to the field of tobacco processing technology, specifically relating to a method for preparing tobacco-enhancing shreds and its application. Background Technology

[0002] With consumers increasingly focused on health, "reducing tar and harm" has become an inevitable trend in the tobacco industry, and the market for low-tar cigarettes is gradually expanding. However, at the same time, the aroma and taste of cigarettes have declined, making the enhancement of flavor increasingly important, especially for my country's tobacco industry where cigarettes account for more than 95% of all cigarettes.

[0003] Currently, the flavoring process in tobacco cigarette manufacturing uses traditional blended flavoring liquids. Flavoring is done after the tobacco leaves are dried, and the temperature of the tobacco shreds is controlled during the flavoring process. The flavoring liquid is slowly absorbed and penetrates into the tobacco shreds by adhering to their surface.

[0004] CN101461564A discloses a tar-reducing and aroma-enhancing agent for flue-cured tobacco leaves, its preparation method, and its application method. The tar-reducing and aroma-enhancing agent comprises 1-2 parts by weight of a tar-reducing agent, 1-3 parts by weight of an aroma-enhancing agent, and 5-10 parts by weight of a humectant. This invention's tar-reducing and aroma-enhancing agent can reduce the tar content in cigarette smoke and reduce the harmful gas CO in the smoke. Adding it to tobacco leaves can enhance their aroma. The preparation method of this invention's tar-reducing and aroma-enhancing agent is simple, has low production costs, and is easy to implement.

[0005] CN102936535A discloses a method for preparing a natural tobacco flavoring agent, which uses Albizia julibrissin flowers as raw material, through solvent extraction, and concentration of the extract to obtain the natural tobacco flavoring agent. Adding this natural tobacco flavoring agent to cigarette tobacco can reduce the irritation of the smoke, mask off-flavors, improve the aroma quality and quantity of the smoke, and give the cigarette smoke an elegant and refreshing character. The outstanding feature of this invention is that it prepares a novel natural tobacco flavoring agent, developing a new application for Albizia julibrissin flowers.

[0006] However, the flavor enhancers mentioned above require concentration and extraction, which is a complex process. Furthermore, direct spraying leads to uneven aroma distribution, and the aroma weakens significantly with prolonged cigarette storage, resulting in unsatisfactory physiological experiences for consumers. Therefore, there is an urgent need to develop a method that can both improve tobacco comfort and maintain aroma for a longer period, thereby better enhancing the sensory quality of cigarettes. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of this invention is to provide a method for preparing cigarette tobacco and its application, wherein the method produces the tobacco tobacco.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] In a first aspect, the present invention provides a method for preparing cigarette tobacco, the method comprising:

[0010] After the tobacco leaves are shredded, they are mixed with flavoring materials, then heated and humidified, dried, and sealed. After standing, the flavoring materials are removed to obtain the flavoring tobacco shreds.

[0011] The flavoring material comprises a combination of tea powder and stevia leaf powder.

[0012] The method of this invention involves mixing and roasting tobacco shreds with flavoring materials during the tobacco leaf drying process. This allows exogenous aromas to be adsorbed and transferred into the tobacco shreds. The flavoring materials are then sieved out, resulting in a more uniform and distinctive aroma in the tobacco shreds. Furthermore, this invention selects tea powder and stevia leaves as flavoring materials. When mixed with tobacco leaves, these materials result in a milder smoke with lower irritation, improving the quality of the smoke aroma and ultimately imparting an elegant, subtle fragrance to the cigarette smoke.

[0013] Preferably, the mass ratio of tea powder to stevia leaf powder is 1:(0.5-1.5), for example, it can be 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, 1:1.1, 1:1.2, 1:1.3 or 1:1.4, etc.

[0014] Preferably, the tobacco leaves are selected from any one or a combination of at least two of Hunan tobacco leaves, Shandong tobacco leaves, or Guizhou tobacco leaves.

[0015] Preferably, the mass ratio of the flavoring material to the tobacco leaf is 1:(10-20), for example, it can be 1:11, 1:12, 1:13, 1:14, 1:15, 1:16, 1:17, 1:18 or 1:19, etc.

[0016] Preferably, the mass ratio of the flavoring material to the tobacco leaves is 1:(13-18).

[0017] Preferably, the tobacco leaves are shredded and then loosened and rehydrated before being mixed with flavoring materials.

[0018] Preferably, the moisture content of the loosened and rehydrated tobacco leaves is 15-20%, for example, it can be 15%, 16%, 17%, 18%, 19% or 20%, etc.

[0019] Preferably, the flavoring material is soaked in water before being mixed with the tobacco leaves.

[0020] In this invention, the flavoring material is soaked in water before being mixed with the tobacco, which can better improve the ability of the flavoring material to penetrate the tobacco, improve the uniformity of the flavoring distribution in the tobacco, reduce the loss of flavoring in the tobacco, and improve the utilization rate of the flavoring material.

[0021] Preferably, the temperature of the water is 80-90℃, for example, it can be 81℃, 82℃, 83℃, 84℃, 85℃, 86℃, 87℃, 88℃ or 89℃, etc.

[0022] Preferably, the warming and humidification is carried out in an HT rehumidification system.

[0023] Preferably, the steam pressure of the HT rehumidification system is 0.8-1.5 bar, for example, it can be 0.9 bar, 1 bar, 1.1 bar, 1.2 bar, 1.3 bar or 1.4 bar.

[0024] Preferably, the temperature of the tobacco leaves after heating and humidification is 60-70℃, for example, it can be 61℃, 62℃, 63℃, 64℃, 65℃, 66℃, 67℃, 68℃ or 69℃, etc.

[0025] Preferably, the moisture content of the tobacco leaves after heating and humidification is 20-25%, for example, it can be 20%, 21%, 22%, 23%, 24% or 25%, etc.

[0026] Preferably, the drying is carried out in a drum dryer.

[0027] The method described in this invention, which involves mixing and drying tobacco leaves and flavoring materials, allows the processed tobacco leaves to retain their aroma for a longer period of time, thereby improving the quality of the tobacco, enhancing the smoke's inducibility, and improving the aftertaste in the mouth.

[0028] Preferably, the drum wall temperature of the drum dryer is 110-120℃, for example, it can be 111℃, 112℃, 113℃, 114℃, 115℃, 116℃, 117℃, 118℃ or 119℃, etc.

[0029] Preferably, the moisture content of the dried tobacco leaves is 5-15%, for example, it can be 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13% or 14%, etc.

[0030] Preferably, the settling time is 1.5-3 hours, for example, 1.7 hours, 1.9 hours, 2 hours, 2.2 hours, 2.5 hours, 2.7 hours or 2.9 hours.

[0031] In a second aspect, the present invention provides a tobacco-enhancing shred, which is prepared by the method described in the first aspect.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The method of the present invention involves mixing and roasting tobacco shreds with plant flavorings during the leaf drying process, so that exogenous aromas are adsorbed and transferred to the tobacco shreds, and then the flavoring materials are screened out, so that the tobacco shreds are endowed with a more uniform and distinctive aroma.

[0034] 2. In this invention, tea powder and stevia leaves are selected as flavoring materials, which can make the tobacco leaves have a mild smoke, less irritation, and improve the quality of smoke aroma, thereby giving the cigarette smoke an elegant and light fragrance.

[0035] 3. The method of the present invention is simple and does not require the addition of other special equipment. It can be achieved using conventional tobacco production equipment and production lines, and is easy to promote and apply. Detailed Implementation

[0036] To further illustrate the technical means and effects of the present invention, the following describes the technical solution of the present invention in conjunction with preferred embodiments of the present invention. However, the present invention is not limited to the scope of the embodiments.

[0037] The tobacco leaves used in this embodiment of the invention are Hunan tobacco leaves, and other raw materials can be used as long as they are purchased from authorized distributors.

[0038] Example 1

[0039] This embodiment provides a method for preparing cigarette tobacco, the method comprising:

[0040] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 18%.

[0041] (2) After packaging tea powder and stevia leaf powder in a mass ratio of 1:1 in separate bags, soak them in water at 85°C for 20 seconds to obtain the processed aroma material.

[0042] (3) Mix 15 portions of tobacco leaves processed in step (1) with 1 portion of flavoring material processed in step (2);

[0043] (4) The tobacco leaves after the mixing treatment in step (3) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1 bar, the temperature is 65°C, and the moisture content of the treated tobacco leaves is 22%.

[0044] (5) The tobacco leaves processed in step (4) are dried in a drum dryer with a drum wall temperature of 115°C and a moisture content of 10%. The dried tobacco leaves are then packed into boxes and left to stand for 2.5 hours. The aroma material is then removed to obtain the tobacco leaves.

[0045] Example 2

[0046] This embodiment provides a method for preparing cigarette tobacco, the method comprising:

[0047] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 20%.

[0048] (2) After packaging tea powder and stevia leaf powder in a mass ratio of 1:0.5 separately, soak them in water at 80℃ for 30 seconds to obtain the processed aroma material.

[0049] (3) Mix 18 portions of tobacco leaves processed in step (1) with 1 portion of flavoring material processed in step (2);

[0050] (4) The tobacco leaves after the mixing treatment in step (3) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 0.8 bar, the temperature is 70°C, and the moisture content of the treated tobacco leaves is 20%.

[0051] (5) The tobacco leaves processed in step (4) are dried in a drum dryer. The drum dryer has a wall temperature of 110°C and the moisture content of the processed tobacco leaves is 15%. The dried tobacco leaves are then packed into boxes and left to stand for 3 hours. The aroma material is then removed to obtain the tobacco leaves.

[0052] Example 3

[0053] This embodiment provides a method for preparing cigarette tobacco, the method comprising:

[0054] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 15%.

[0055] (2) After packaging tea powder and stevia leaf powder in a mass ratio of 1:1.5 separately, soak them in water at 90℃ for 15 seconds to obtain the processed aroma material.

[0056] (3) Mix 13 portions of tobacco leaves processed in step (1) with 1 portion of flavoring material processed in step (2);

[0057] (4) The tobacco leaves after the mixing treatment in step (3) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1.5 bar, the temperature is 60°C, and the moisture content of the treated tobacco leaves is 25%.

[0058] (5) The tobacco leaves processed in step (4) are dried in a drum dryer with a drum wall temperature of 120°C and a moisture content of 5%. The dried tobacco leaves are then packed into boxes and left to stand for 1.5 hours. The aromatic materials are then removed to obtain the tobacco leaves.

[0059] Example 4

[0060] This embodiment provides a method for preparing cigarette tobacco, the method comprising:

[0061] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 18%.

[0062] (2) Mix 15 portions of tobacco leaves processed in step (1) with 1 portion of flavoring material, wherein the flavoring material is a combination of tea powder and stevia leaf powder;

[0063] (3) The tobacco leaves after the mixing treatment in step (2) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1 bar, the temperature is 65°C, and the moisture content of the treated tobacco leaves is 22%.

[0064] (4) The tobacco leaves processed in step (3) are dried in a drum dryer with a drum wall temperature of 115°C and a moisture content of 10%. The dried tobacco leaves are then packed into boxes and left to stand for 2.5 hours. The aromatic materials are then removed to obtain the tobacco leaves.

[0065] Example 5

[0066] This embodiment provides a method for preparing cigarette tobacco, the method comprising:

[0067] (1) After packaging tea powder and stevia leaf powder separately, soak them in water at 85°C for 20 seconds to obtain the processed aromatic material;

[0068] (2) Shred the tobacco leaves, and then mix 15 portions of shredded tobacco leaves with 1 portion of flavoring material processed in step (1);

[0069] (3) The tobacco leaves after the mixing treatment in step (2) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1 bar, the temperature is 65°C, and the moisture content of the treated tobacco leaves is 22%.

[0070] (4) The tobacco leaves processed in step (3) are dried in a drum dryer with a drum wall temperature of 115°C and a moisture content of 10%. The dried tobacco leaves are then packed into boxes and left to stand for 2.5 hours. The aromatic materials are then removed to obtain the tobacco leaves.

[0071] Example 6

[0072] This comparative example provides a method for preparing tobacco shreds. The only difference between this method and Example 1 is that the mass ratio of tea powder to stevia leaf powder in step (2) is 1:0.1. The remaining steps are the same as in Example 1.

[0073] Example 7

[0074] This comparative example provides a method for preparing tobacco shreds. The only difference between this method and Example 1 is that the mass ratio of tea powder to stevia leaf powder in step (2) is 1:3, and the other steps are the same as in Example 1.

[0075] Example 8

[0076] This embodiment provides a method for preparing tobacco shreds. The only difference between this method and Embodiment 1 is that the mass ratio of flavoring material to tobacco leaves in step (3) is 1:5, and the remaining steps are the same as in Embodiment 1.

[0077] Example 9

[0078] This embodiment provides a method for preparing tobacco shreds. The only difference between this method and Embodiment 1 is that the mass ratio of flavoring material to tobacco leaves in step (3) is 1:30, and the remaining steps are the same as in Embodiment 1.

[0079] Example 10

[0080] This embodiment provides a method for preparing tobacco shreds. The only difference between this method and Embodiment 1 is that the moisture content of the tobacco leaves after heating and humidifying in step (4) is 35%. The remaining steps are the same as in Embodiment 1.

[0081] Comparative Example 1

[0082] This comparative example provides a method for preparing cigarette tobacco, the method comprising:

[0083] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 18%.

[0084] (2) After the tea powder and stevia leaf powder are packaged separately, they are soaked in water at 85°C for 20 seconds to obtain the processed aromatic material.

[0085] (3) Mix 15 portions of tobacco leaves processed in step (1) with 1 portion of flavoring material processed in step (2);

[0086] (4) The tobacco leaves processed in step (3) are dried in a drum dryer with a drum wall temperature of 115°C and a moisture content of 10%. The dried tobacco leaves are then packed into boxes and left to stand for 2.5 hours. The aromatic materials are then removed to obtain the tobacco leaves.

[0087] Comparative Example 2

[0088] This comparative example provides a method for preparing cigarette tobacco, the method comprising:

[0089] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 18%.

[0090] (2) The tobacco leaves after the mixing treatment in step (1) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1 bar, the temperature is 65°C, and the moisture content of the treated tobacco leaves is 22%.

[0091] (3) After packaging the tea powder and stevia leaf powder separately, soak them in water at 85°C for 20 seconds to obtain the processed aromatic material;

[0092] (4) Mix 15 portions of tobacco leaves processed in step (2) with 1 portion of flavoring material processed in step (3);

[0093] (5) The tobacco leaves processed in step (4) are dried in a drum dryer with a drum wall temperature of 115°C and a moisture content of 10%. The dried tobacco leaves are then packed into boxes and left to stand for 2.5 hours. The aroma material is then removed to obtain the tobacco leaves.

[0094] Comparative Example 3

[0095] This comparative example provides a method for preparing cigarette tobacco, the method comprising:

[0096] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 18%.

[0097] (2) The tobacco leaves after the mixing treatment in step (1) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1 bar, the temperature is 65°C, and the moisture content of the treated tobacco leaves is 22%.

[0098] (3) The tobacco leaves processed in step (2) are dried in a drum dryer. The drum dryer wall temperature is 115°C, and the moisture content of the processed tobacco leaves is 10%.

[0099] (4) After packaging the tea powder and stevia leaf powder separately, soak them in water at 85°C for 20 seconds to obtain the processed aromatic material;

[0100] (5) Mix 15 portions of tobacco leaves processed in step (3) with 1 portion of flavoring material processed in step (4) for 5 hours; then pack the tobacco leaves into boxes and let them stand for 2.5 hours, and then remove the flavoring material to obtain the tobacco leaves.

[0101] Comparative Example 4

[0102] This comparative example provides a method for preparing cigarette tobacco. The only difference between this method and Example 1 is that in step (2), the flavoring material is only tea powder, and the amount of flavoring material added remains unchanged. The remaining steps are the same as in Example 1.

[0103] Comparative Example 5

[0104] This comparative example provides a method for preparing cigarette tobacco. The difference between this method and Example 1 is that in step (2), the flavoring material is only stevia leaf powder, the amount of flavoring material added remains unchanged, and the remaining steps are the same as in Example 1.

[0105] Comparative Example 6

[0106] This comparative example provides a method for preparing cigarette tobacco, the method comprising:

[0107] (1) After the tobacco leaves are shredded, they are loosened and rehydrated. The moisture content of the tobacco leaves after the treatment is 18%.

[0108] (2) The tobacco leaves after the mixing treatment in step (1) are subjected to heating and humidification treatment in the HT rehumidification system. The steam pressure of the HT rehumidification system is 1 bar, the temperature is 65°C, and the moisture content of the treated tobacco leaves is 22%.

[0109] (3) The tobacco leaves processed in step (2) are dried in a drum dryer with a drum wall temperature of 115°C and a moisture content of 10%. The dried tobacco leaves are then packed into boxes and left to stand for 2.5 hours to obtain the tobacco leaves.

[0110] Test Example 1

[0111] The aroma components of the original tobacco leaves, as well as those obtained in Examples 1-10 and Comparative Examples 1-6, were determined using the following method:

[0112] Weigh 2g of sample, accurate to 0.1mg, and perform two parallel determinations for each sample. Add 300μL of D3-phenylethyl acetate internal standard solution (2mg / mL) and 15mL of ethanol, sonicate for 10 minutes, let stand for 24h, sonicate for another 10 minutes, let stand for 10 minutes, filter through a 0.45μm organic filter membrane, and perform GC-MS determination.

[0113] GC-MS conditions: A DB-WAXetr (60m x 250μm x 0.25μm) column was used. The initial temperature was 40℃, and the holding time was 2 min. The temperature was then increased to 160℃ at a rate of 5℃ / min, and the holding time was 8 min. Finally, the temperature was increased to 260℃ at a rate of 5℃ / min, and the holding time was 46 min. The injection port temperature was 260℃; the injection volume was 1.5 μL; the carrier gas was helium, in constant flow mode, at 1.5 mL / min; splitless injection was used; the solvent delay was 20 min; the transfer line temperature was 260℃; the ionization mode was EI; the ion source temperature was 250℃; the ionization energy was 70 eV; the quadrupole temperature was 150℃; and the scanning mode was Scan.

[0114] The results are shown in Table 1.

[0115] Table 1. Detection results of aroma components (μg / g) in samples from different implementation methods.

[0116]

[0117] As shown in Table 1, the method of this application can effectively increase the aroma components in tobacco leaves, and the results are as follows:

[0118] The tobacco leaves obtained in Examples 1-3 contained 19.45-19.72 μg / g of 4-hydroxy-2,5-dimethyl-3(2H)-furanone, a typical characteristic component of caramel sweet aroma; 517.23-530.28 μg / g of 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one, a characteristic component of sweet aroma; 2198.43-2204.97 μg / g of 5-hydroxymethylfurfural, an important aroma-producing substance in tobacco; 51.55-54.61 μg / g of ionol; and 384.25-397.45 μg / g of palmitic acid, a major higher fatty acid that improves smoke comfort. The content of methyl palmitate, a type of ester, was 51.20-53.15 μg / g. Compared with the original tobacco leaves, the content of 4-hydroxy-2,5-dimethyl-3(2H)furanone, a typical characteristic component of caramel sweet aroma, increased by more than 26%; the content of 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one, a characteristic component of sweet aroma, increased by more than 15%; the content of 5-hydroxymethylfurfural, an important aroma substance in tobacco, increased by more than 16%; the content of ionool increased by more than 30%; the content of palmitic acid, a major higher fatty acid that improves smoke comfort, increased by more than 88%; and the content of methyl palmitate, another type of ester, increased by more than 30%.

[0119] In Example 4, when the flavoring materials were not soaked in water before being mixed with the tobacco leaves, the increase in flavoring components decreased. This is because the flavors of tea and stevia leaves can be better absorbed into the tobacco leaves after soaking in water.

[0120] In Example 5, if the tobacco leaves are not loosened and rehydrated before being mixed with the flavoring materials, the increase in flavoring components will also decrease. This is because the moisture content of the tobacco leaves is too low when they are mixed, resulting in poor combination with the aroma of the flavorings.

[0121] In Examples 6 and 7, when the mass ratio of tea powder to stevia leaf powder is outside the limits of this invention, it will affect the aroma content and quality of the final tobacco leaves.

[0122] In Examples 8 and 9, when the mass ratio of spices to tobacco leaves is not within the limits of this invention, the content of aroma components in the tobacco leaves is also affected.

[0123] In Example 10, when the moisture content of the tobacco leaves is too high after increasing the temperature and humidity, it will also affect the aroma content of the tobacco leaves.

[0124] As can be seen from Comparative Example 1, when the heating and humidification steps are missing, the moisture content of the tobacco leaves is too low, resulting in a short drying time. Consequently, the flavorings cannot be fully mixed with the tobacco leaves, and the increase in flavor components is also poor.

[0125] As can be seen from Comparative Examples 2 and 3, the steps of the method must be performed in sequence and the order cannot be reversed. Only by combining the steps efficiently and synergistically can the aroma content of the final tobacco leaf be improved.

[0126] As can be seen from Comparative Examples 4-5, when the flavoring is not the mixture of tea and stevia leaves of the present invention, the content of aroma components in the final tobacco leaf will be reduced.

[0127] Test Example 2

[0128] Seven top-level tasters were organized to conduct sensory evaluations of various indicators of the tobacco leaves obtained by the methods described in Examples 1-8 and Comparative Examples 1-8 of this invention, based on the evaluation content and judgment criteria in Table 2. The scoring criteria are shown in Table 2, and the scoring results are shown in Table 3 (the average value of each group is taken and one decimal place is retained).

[0129] Table 2 Sensory Indicator Scoring Scale

[0130]

[0131] Table 3 Sensory quality evaluation results of different implementation samples

[0132]

[0133]

[0134] As can be seen from Table 3, the tobacco leaves obtained by the method of the present invention have significant improvements in aroma quality, aroma quantity, mellowness, and irritation.

[0135] The applicant declares that this invention illustrates the preparation method and application of the cigarette-enhancing shreds through the above embodiments, but this invention is not limited to the above embodiments, that is, it does not mean that this invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of the raw materials of this invention, addition of auxiliary components, and selection of specific methods, etc., all fall within the protection and disclosure scope of this invention.

[0136] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0137] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A method for preparing cigarette tobacco, characterized in that, The preparation method includes: After the tobacco leaves are shredded, they are mixed with flavoring materials, and then subjected to heating, humidification, and drying processes before being sealed. After standing, the flavoring materials are removed to obtain the flavored tobacco shreds. The flavoring material includes a combination of tea powder and stevia leaf powder; The mass ratio of tea powder to stevia leaf powder is 1:(0.5-1.5). The mass ratio of the flavoring material to the tobacco leaf is 1:(10-20). The moisture content of the tobacco leaves after heating and humidification is 20-25%.

2. The method for preparing cigarette-enhancing shreds as described in claim 1, characterized in that, The mass ratio of the flavoring material to the tobacco leaves is 1:(13-18).

3. The method for preparing cigarette tobacco as described in claim 1, characterized in that, The tobacco leaves are shredded, loosened and rehydrated, and then mixed with flavoring materials.

4. The method for preparing cigarette tobacco as described in claim 3, characterized in that, The moisture content of the loosened and rehydrated tobacco leaves is 15-20%.

5. The method for preparing cigarette tobacco as described in claim 1, characterized in that, The flavoring material is soaked in water before being mixed with the tobacco leaves.

6. The method for preparing cigarette-enhancing shreds as described in claim 5, characterized in that, The temperature of the water is 80-90℃.

7. The method for preparing cigarette tobacco as described in claim 1, characterized in that, The heating and humidification are carried out in the HT rehumidification system.

8. The method for preparing cigarette tobacco as described in claim 7, characterized in that, The steam pressure of the HT rehumidification system is 0.8-1.5 bar.

9. The method for preparing cigarette-enhancing shreds as described in claim 1, characterized in that, The temperature of the tobacco leaves after heating and humidification is 60-70℃.

10. The method for preparing cigarette-enhancing shreds as described in claim 1, characterized in that, The drying is carried out in a drum dryer.

11. The method for preparing cigarette-enhancing shreds as described in claim 10, characterized in that, The drum wall temperature of the rotary dryer is 110-120℃.

12. The method for preparing cigarette-enhancing shreds as described in claim 1, characterized in that, The moisture content of the dried tobacco leaves is 5-15%.

13. The method for preparing cigarette tobacco as described in claim 1, characterized in that, The settling time is 1.5-3 hours.

14. A type of cigarette flavoring shred, characterized in that, The tobacco shreds are prepared using the method described in any one of claims 1-13.

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