Preparation and application of clove type characteristic reconstituted tobacco

Abstract

The invention discloses preparation and application of clove type characteristic reconstituted tobacco. A preparation method of the clove type characteristic reconstituted tobacco comprises the working procedures of clove oil extraction, tobacco extracting solution preparation, tobacco source bacterial cellulose preparation, calcium carbonate modification, reconstituted tobacco substrate preparation, coating solution preparation, clove type reconstituted tobacco preparation, perfuming and the like. The clove type reconstituted tobacco developed by the invention can be used as a characteristic raw material to be applied to traditional cigarettes or heat-not-burn cigarettes, and the effect of enriching and coordinating the cigarette fragrance is achieved; and while the potential quality hazard is reduced, the special style and taste of the Tong cigarette are realized.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco processing, and in particular to the preparation and application of clove-type characteristic reconstituted tobacco leaves. Background Art

[0002] As the world's fourth largest tobacco consumption market, Indonesia's unique position is reflected in people's love for clove cigarettes. Data shows that as many as 90% of Indonesian smokers prefer clove cigarettes rather than traditional white cigarettes. Clove cigarettes have a unique style. In terms of smoke aroma, they have strong aromas such as medicinal, spicy, woody, green, and incense; in terms of taste, they have obvious taste sensations such as coolness, bitterness, and spiciness. The original method of making clove cigarettes was to mix clove oil with tobacco leaves and make them by hand. The existing clove-type cigarettes use dried clove flowers in the bud stage as the fragrance raw material. The clove flowers are cut into thin stem slices, mixed with tobacco shreds, and rolled into cigarettes. However, the flower buds are easy to break into foam during the cutting process and are screened out; the flower stalks are hard in texture, and the cut stem slices are large and hard, which can easily pierce the cigarette paper. In addition, clove flower stems are rich in oily substances such as clove oil. On the one hand, they can easily form oil stains on the surface of parts such as the wind chamber guides, scrapers, and tobacco tongues of cigarette equipment, hindering the movement of tobacco and causing tobacco blockage. On the other hand, they can easily penetrate into the surface of cigarette paper to form oily smoke stains, causing quality risks.

[0003] Therefore, how to solve the above-mentioned quality problems and achieve the unique taste of clove cigarettes has become a technical problem that urgently needs to be solved in this field. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a preparation and application of clove-type characteristic reconstituted tobacco leaves, which can reduce quality risks and achieve the unique style and taste of clove cigarettes.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] A method for preparing clove-type characteristic reconstituted tobacco leaves comprises the following steps:

[0007] (1) Clove oil extraction: Cloves are crushed and placed in a CO2 supercritical extraction device for extraction to obtain clove oil and clove powder residue;

[0008] (2) Preparation of tobacco extract: Mix the production waste with water and extract, separate the solid and liquid to obtain residue and extract; repeat the above operation to concentrate the extract to obtain tobacco concentrate;

[0009] (3) Preparation of tobacco-derived bacterial cellulose: Weigh 10% of tobacco extract, add acid to adjust the pH value of the extract to 5, sterilize and inoculate Gluconacetic Bacillus strain, culture for 1 week, take out the generated brown bacterial cellulose film and homogenize it;

[0010] (4) Preparation of modified calcium carbonate: powdered heavy calcium carbonate and anhydrous ethanol are mixed, stirred, stearic acid is added, refluxed, cooled to room temperature, filtered, dried, and ground to obtain modified calcium carbonate;

[0011] (5) Preparation of reconstituted tobacco leaf substrate: The tobacco extract residue of step (2) and the clove oil extraction residue of step (1) are mixed and pulped, 8% of tobacco bacterial cellulose of step (3) is added, and the pulp concentration is adjusted to 0.5%, and functional additives and unmodified light spunbond calcium carbonate (D50: 2-2.8 μm) are added, and the papermaking basis weight is 60±2 g / m 2 The moisture content of the reconstituted tobacco leaf substrate is controlled at 20-28%;

[0012] (6) Preparation of coating liquid: add 1.0% to 2.5% glycerol and 0.1% to 0.5% hydroxypropyl methylcellulose to the tobacco concentrate of step (3), stir and react for 30 minutes, add 0.8% to 1.0% diammonium phosphate (DAP) and stir to dissolve, then slowly add 2.5% to 5.0% modified heavy calcium carbonate powder, add 0.2% to 0.5% malic acid after uniform dispersion, and dissolve to form a coating liquid;

[0013] (7) Preparation of clove-type reconstituted tobacco leaves: The tobacco concentrate of step (2) and the modified calcium carbonate of step (4) are transferred to the substrate of step (5) by dipping. The coating rate is controlled to be 30% to 40%. The reconstituted tobacco leaves are dried and the moisture content is adjusted to 11.7%. The reconstituted tobacco leaves are then fed into a shredder for shredding. The shredded width is controlled to be 0.9±0.1 mm.

[0014] (8) Flavoring: After drying, weigh the clove oil obtained in step (1), dissolve it in ethanol, and apply it to the filamentous reconstituted tobacco leaves obtained in step (7) in the form of a spray.

[0015] Preferably, in the above technical solution, step (1) is specifically:

[0016] The cloves were crushed and placed in a CO2 supercritical extraction device, extracted at a pressure of 10 MPa and a temperature of 40°C for 4 hours, and analyzed at a pressure of 7.0 MPa and a temperature of 45°C to obtain clove oil and clove powder residues for standby use.

[0017] Preferably, in the above technical solution, step (2) is specifically:

[0018] Add 2 times the mass of water to the residue produced by the cigarette factory, extract it at 60°C for 40 minutes, separate the solid and the liquid, and obtain the residue and the extract;

[0019] Repeat the above steps to concentrate the extract to a density of (1.180±0.005) g / cm 3 The tobacco concentrate is refrigerated for later use.

[0020] Preferably, in the above technical solution, step (3) is specifically:

[0021] Weigh 10% of tobacco extract, add 10% by volume of dilute acetic acid to adjust the pH value of the extract to 5, sterilize at 120°C for 20 minutes, then inoculate Gluconacetic Bacillus into the sterilized solution at an inoculation rate of 6-8% of the weight of the extract, shake, and culture at 30°C for 1 week. The generated brown bacterial cellulose film floats on the surface of the solution and is taken out and homogenized.

[0022] Preferably, in the above technical solution, the Gluconacetic Bacillus strain is ZT-01, which is deposited in the General Microbiological Center of China National Microbiological Culture Collection Administration with a deposit number of CGMCC No.21544.

[0023] Preferably, in the above technical solution, step (4) is specifically:

[0024] Add powdered heavy calcium carbonate (D50: 13-15 μm) and anhydrous ethanol into a three-necked flask equipped with a mechanical stirrer and a reflux condenser, and stir for 30 minutes to obtain an anhydrous ethanol mixed solution of calcium carbonate;

[0025] Weigh stearic acid and dissolve it in anhydrous ethanol, and add it to the mixed solution of heavy calcium carbonate in anhydrous ethanol in batches. After the addition is completed, reflux for 1 hour, cool to room temperature, filter, dry, and grind through a 500-mesh sieve to obtain modified calcium carbonate.

[0026] Preferably, in the above technical solution, step (5) is specifically:

[0027] The tobacco extract residue of step (2) and the clove oil extract residue of step (1) are mixed, and the beating degree of the slurry is controlled to be (20±2°) SR by pulping;

[0028] Weigh 8% tobacco bacterial cellulose by mass, and make pulp to control the beating degree of the pulp to (50±2°)SR;

[0029] After mixing with cigarette slurry, adjust the slurry concentration to 0.5%, add 0.5% functional additives, 2.5% unmodified spindle calcium carbonate, and use a standard paper former to make a quantitative 60±2g / m 2 The moisture content of the reconstituted tobacco leaf base sheet is controlled at 20-28%.

[0030] Preferably, in the above technical solution, in step (6): relative to the mass of the concentrated liquid, the addition ratio of glycerol is 1.0% to 2.5%, the addition ratio of hydroxypropyl methylcellulose is 0.1 to 0.5%, the addition ratio of diammonium hydrogen phosphate (DAP) is 0.8 to 1.0%, the addition ratio of modified heavy calcium carbonate powder is 2.5 to 5.0%, and the addition ratio of malic acid is 0.2 to 0.5%.

[0031] Preferably, in the above technical solution, in step (8): the amount of clove oil applied is 5.0 to 9.0 g / kg.

[0032] Application of clove-type special reconstituted tobacco leaves in cigarettes.

[0033] The above technical solution of the present invention has the following beneficial effects:

[0034] The present invention adds non-tobacco substance clove oil extraction residue to the reconstituted tobacco leaf base sheet, which improves the utilization rate of plant resources on the one hand, and replaces the wood pulp fiber in the reconstituted tobacco leaf paper base with bacterial cellulose prepared by tobacco source extract on the other hand, thereby reducing the production cost of the reconstituted tobacco leaf.

[0035] Secondly, half of the calcium carbonate is added to the slurry, and the other half is modified with stearic acid and added to the coating liquid. On the one hand, the loss of calcium carbonate can be reduced. On the other hand, the modified calcium carbonate changes from hydrophilic to lipophilic properties, reducing its agglomeration in the coating liquid. At the same time, a new hydrogen bond system can be introduced, thereby improving the tensile strength and bulk of the reconstituted tobacco leaves.

[0036] In addition, the method of adding flavor to filamentous reconstituted tobacco leaves not only improves the utilization rate of flavors, but also effectively broadens the functionality and applicability of reconstituted tobacco leaves, shortening the development cycle of reconstituted tobacco leaves. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0038] Unless otherwise specified, the reagents used in this application are all commercially available or obtained through commercial channels, or can be prepared by referring to existing chemical methods.

[0039] Example 1

[0040] (1) Preparation of clove oil:

[0041] Crush the cloves and place them in a CO2 supercritical extraction device. The process conditions used are: pressure of 10MPa, temperature of 40°C, and CO2 flow rate of 22L / h for extraction for 4h. Analysis is performed at a pressure of 7.0MPa and a temperature of 45°C to obtain clove oil and clove powder residues for standby use.

[0042] (2) Preparation of tobacco extract:

[0043] 1000 kg (absolute dry weight) of the production dust from a cigarette factory was added with twice the weight of water, extracted at 60° C. for 40 minutes, and solid-liquid separation was performed to obtain a residue and an extract.

[0044] Repeat the above steps, combine the extract and the residue, and concentrate the extract to a density of (1.180±0.005) g / cm 3 The tobacco concentrate is refrigerated and set aside for use.

[0045] (3) Preparation of tobacco-derived bacterial cellulose:

[0046] Weigh 10% of tobacco extract, add 10% by volume of dilute acetic acid to adjust the pH value of the extract to 5, and then dispense into stoppered containers, seal the openings with sealing films, and sterilize at 120°C for 20 minutes;

[0047] Then, the Gluconacetic Bacillus strain ZT-01 was inoculated into the above sterilized solution at an inoculation amount of 6-8% of the weight of the extract, and after sufficient shaking, it was kept at 30°C for 1 week, and the generated brown bacterial cellulose film floated on the surface of the solution. The above brown cellulose film was taken out and homogenized in a standard decompressor, and the concentration of the obtained slurry was about 0.3%.

[0048] Gluconacetobacter sp.ZT-01 is deposited in the General Microbiology Center of China Microorganism Culture Collection (CGMCC), address: No. 3, No. 1 Beichen West Road, Chaoyang District, Beijing. The deposit date is December 23, 2020, and the deposit number is CGMCC No.21544.

[0049] (4) Preparation of modified calcium carbonate: 90 g of powdered heavy calcium carbonate (D50: 13-15 μm) and 1000 mL of anhydrous ethanol were added to a three-necked flask equipped with a mechanical stirrer and a reflux condenser, and the mixture was stirred for 30 min.

[0050] Weigh 4.0 g of stearic acid and dissolve it in 100 mL of anhydrous ethanol, then add it to the anhydrous ethanol mixed solution of calcium carbonate in batches. After the addition is completed, reflux the reaction for 1 hour. After cooling to room temperature, filter, dry, and grind through a 500-mesh sieve to obtain modified calcium carbonate.

[0051] (5) Preparation of reconstituted tobacco leaf substrate:

[0052] The tobacco extract residue and the clove oil extract residue are mixed and pulped to control the beating degree of the pulp to be (20±2°)SR.

[0053] Weigh 8% by mass (relative to the mass of the pulp, the same below) of tobacco bacterial cellulose (80 kg), and control the pulping degree of the pulp to (50±2°) SR by pulping. After mixing with the tobacco dust pulp, adjust the pulp concentration to 0.5%, add 0.5% of functional additives (cationic guar gum: non-ionic guar gum = 1:1), 2.5% of unmodified spindle calcium carbonate, and use a standard paper former to make a paper with a basis weight of 60±2 g / m 2 The moisture content of the reconstituted tobacco leaf base sheet is controlled at 20-28%.

[0054] (6) Preparation of coating solution:

[0055] Add glycerol (addition ratio 1%, relative to the mass of the concentrate, the same below) to the tobacco concentrate, stir and react for 30 minutes, then add diammonium hydrogen phosphate DAP (addition ratio 0.8%) and stir to dissolve, then slowly add modified heavy calcium carbonate powder (addition ratio 2.5%), stir to form a uniform dispersion, and finally add malic acid (addition ratio 0.2%) and dissolve for use.

[0056] (7) Preparation of clove-type reconstituted tobacco leaves:

[0057] The tobacco concentrate and modified calcium carbonate are transferred to the reconstituted tobacco leaf substrate by dipping, the coating rate is controlled to be 40%, and then dried.

[0058] Example 2

[0059] The difference from Example 1 is that the coating rate is controlled to be 35%.

[0060] Example 3

[0061] The difference from Example 1 is that the coating rate is controlled to be 30%.

[0062] Comparative Example 1

[0063] The difference from Example 1 is that the percentage of wood pulp fiber is 8%, bacterial cellulose is not added, calcium carbonate is added in the pulp, and unmodified calcium carbonate is used, and the addition ratio is 5.0%. Clove oil is added to the coating liquid at a ratio of 5.0 g / kg of reconstituted tobacco leaves, and the obtained sheet-shaped reconstituted tobacco leaves are directly shredded without the subsequent step of flavoring the shredded reconstituted tobacco leaves.

[0064] The physical indexes of the reconstituted tobacco leaf base prepared as above were tested, and the results are shown in Table 1.

[0065] Physical properties test of reconstituted tobacco leaves:

[0066] Table 1 Test results of physical and chemical indexes of papermaking reconstituted tobacco leaves

[0067]

[0068] As can be seen from Table 1, the tensile index, bulk and calcium carbonate retention rate of the reconstituted tobacco leaves prepared by the present invention are significantly improved. This is because: on the one hand, after replacing the exogenous wood pulp fiber with bacterial cellulose, the bacterial cellulose has high tensile strength and elastic modulus, which can significantly improve the tensile strength of the sheet base. At the same time, the high specific surface area and super strong adsorption capacity of the bacterial cellulose, combined with the new hydrogen bond system introduced by the modified calcium carbonate, can bond calcium carbonate, fine fibers and other materials together, which not only improves the utilization rate of materials such as calcium carbonate and fine fibers, but also further improves the tensile strength and bulk of the sheet base.

[0069] Preparation of clove-type filamentary reconstituted tobacco leaves (flavoring):

[0070] Example 4

[0071] The reconstituted tobacco leaf base prepared in Example 1 was subjected to humidification treatment, and after the moisture content of the reconstituted tobacco leaf was adjusted to 11.7%, it was sent to a shredder for shredding, and the shredded width was controlled to be 0.9±0.1 mm.

[0072] A certain amount of clove oil is weighed and dissolved in ethanol, loaded into an atomizer, and sprayed onto the surface of filamentary reconstituted tobacco leaves in batches under stirring to obtain clove-type characteristic reconstituted tobacco leaves. The amount of clove oil added is 5.0 g / kg filamentary reconstituted tobacco leaves.

[0073] Example 5

[0074] The reconstituted tobacco leaf base prepared in Example 2 was humidified, and the moisture content of the reconstituted tobacco leaf was adjusted to 11.7%, and then sent to a shredder for shredding, and the shredded width was controlled to be 0.9±0.1 mm. Different from Example 4, the application ratio of clove oil was 6.0 g / kg filamentous reconstituted tobacco leaf.

[0075] Example 6

[0076] The reconstituted tobacco leaf base prepared in Example 3 was humidified, and the moisture content of the reconstituted tobacco leaf was adjusted to 11.7%, and then sent to a shredder for shredding, and the shredded width was controlled to be 0.9±0.1 mm. Different from Example 4, the application ratio of clove oil was 7.0 g / kg filamentous reconstituted tobacco leaf.

[0077] Comparative Example 2

[0078] The reconstituted tobacco leaf base prepared in Comparative Example 1 was humidified, and after adjusting the moisture content of the reconstituted tobacco leaf to 11.7%, it was sent to a shredder for shredding, and the shredded width was controlled to be 0.9±0.1 mm. Since clove oil was already added to the coating liquid in Comparative Example 1, no flavoring treatment was required.

[0079] Detection of retention rate of main components of clove oil in filamentous reconstituted tobacco leaves:

[0080] The main components of clove oil are eugenol, eugenol acetate and caryophyllene. In order to verify the flavoring effect of clove oil, 2 g of filamentous reconstituted tobacco leaves were weighed, 20 ml of anhydrous ethanol was added, refluxed for 1 hour, cooled to room temperature, the supernatant was taken, filtered with an organic filter membrane, and detected by gas chromatography. The results are shown in Table 2.

[0081] Table 2 Retention rate of main components of clove oil in filamentous reconstituted tobacco leaves

[0082]

[0083]

[0084] As shown in Table 2, when clove oil is added to the coating solution, the retention rates of eugenol and eugenol acetate are only 56.2% and 64.8%, and the retention rate of caryophyllene is as low as 16.8%. This may be because the substrate is subjected to high temperature drying process after dipping, and the retention rate of key flavor components is difficult to control under high temperature environment, and also causes the fluctuation of reconstituted tobacco product quality and consumption waste. When clove oil is added to filamentous reconstituted tobacco, on the one hand, high temperature treatment is not required after adding, and on the other hand, the specific surface area of ​​filamentous reconstituted tobacco is large, and the adsorption of clove oil is more sufficient, so the retention rate is all above 90%.

[0085] Sensory evaluation of filamentous reconstituted tobacco (flavored):

[0086] The filamentous reconstituted tobacco leaves obtained in Comparative Example 2 and Examples 4-6 were manually rolled into cigarettes. The sample cigarettes were subjected to sensory evaluation according to the industry standard YC / T498 "Sensory Evaluation Method for Reconstituted Tobacco Leaves (Papermaking Method)" and "Sensory Quality Evaluation Method for Henan Zhongyan Reconstituted Tobacco Leaves". The results are shown in Table 3.

[0087] Table 3 Sensory quality evaluation of reconstituted tobacco leaves

[0088]

[0089] As can be seen from Table 3, compared with the clove oil added to the coating liquid, the clove-type reconstituted tobacco prepared by adding clove oil to the filamentary reconstituted tobacco has more obvious clove style characteristics, richer fragrance, and improved aroma volume, concentration, irritation, aftertaste and satisfaction, which has good application prospects.

[0090] Finished cigarette effect verification:

[0091] In order to further verify the application of clove-type reconstituted tobacco as a featured raw material in cigarettes, it was added to a certain brand of cigarette shreds at a ratio of 16%. The auxiliary materials of this brand (cigarette paper, tipping paper, mouthpiece) were used to roll and package the test samples on the pilot production line of cigarettes. The conventional smoke components of the cigarettes were tested in accordance with GB / T 19609-2004 and GB / T 23355-2009 (see Table 4).

[0092] Table 4 Results of sensory quality evaluation of cigarettes

[0093]

[0094] As can be seen from Table 4, compared with cigarette 1, the unique style of the clove-flavored cigarettes of cigarettes 2-4 is more prominent, the aroma is richer, the tobacco aroma and clove aroma are more harmonious, the aroma volume and concentration are significantly increased, the sense of satisfaction is enhanced, the aroma lasts longer, and the aftertaste is longer.

[0095] Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Any person skilled in the art may make various choices and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is limited by the claims and their equivalents.

Claims

1. A method for preparing clove-type characteristic reconstituted tobacco, characterized in that: The following steps are involved: (1) Clove oil extraction: Cloves are crushed and placed in a CO2 supercritical extraction device for extraction to obtain clove oil and clove powder residue; (2) Preparation of tobacco extract: Mix the production waste with water and extract, separate the solid and liquid to obtain residue and extract; repeat the above operation to concentrate the extract to obtain tobacco concentrate; (3) Preparation of tobacco-derived bacterial cellulose: Weigh 10% of tobacco extract, add acid to adjust the pH value of the extract to 5, sterilize and inoculate Gluconacetic Bacillus strain, culture for 1 week, take out the generated brown bacterial cellulose film and homogenize it; (4) Preparation of modified calcium carbonate: powdered heavy calcium carbonate and anhydrous ethanol are mixed, stirred, stearic acid is added, refluxed, cooled to room temperature, filtered, dried, and ground to obtain modified calcium carbonate; (5) Preparation of reconstituted tobacco leaf substrate: The tobacco extract residue of step (2) and the clove oil extraction residue of step (1) are mixed and pulped, 8% of tobacco bacterial cellulose of step (3) is added, the pulp concentration is adjusted to 0.5%, functional additives and unmodified light spunbond calcium carbonate are added, and the papermaking basis weight is 60±2 g / m 2 The moisture content of the reconstituted tobacco leaf substrate is controlled at 20-28%; (6) Preparation of coating liquid: add 1.0% to 2.5% glycerol and 0.1% to 0.5% hydroxypropyl methylcellulose to the tobacco concentrate of step (3), stir and react for 30 minutes, add 0.8% to 1.0% diammonium phosphate (DAP) and stir to dissolve, then slowly add 2.5% to 5.0% modified heavy calcium carbonate powder, add 0.2% to 0.5% malic acid after uniform dispersion, and dissolve to form a coating liquid; (7) Preparation of clove-type reconstituted tobacco leaves: The tobacco concentrate of step (2) and the modified calcium carbonate of step (4) are transferred to the substrate of step (5) by dipping. The coating rate is controlled to be 30% to 40%. The reconstituted tobacco leaves are dried and the moisture content is adjusted to 11.7%. The reconstituted tobacco leaves are then fed into a shredder for shredding. The shredded width is controlled to be 0.9±0.1 mm. (8) Fragrance addition: After drying, weigh the clove oil obtained in step (1), dissolve it in ethanol, and apply it to the filamentous reconstituted tobacco leaves obtained in step (7) in the form of a spray.

2. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: Step (1) is specifically as follows: The cloves were crushed and placed in a CO2 supercritical extraction device, extracted at a pressure of 10 MPa and a temperature of 40°C for 4 hours, and analyzed at a pressure of 7.0 MPa and a temperature of 45°C to obtain clove oil and clove powder residues for standby use.

3. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: Step (2) is specifically as follows: Add 2 times the mass of water to the residue produced by the cigarette factory, extract it at 60°C for 40 minutes, separate the solid and the liquid, and obtain the residue and the extract; Repeat the above steps to concentrate the extract to a density of 1.180±0.005g / cm 3 The tobacco concentrate is refrigerated for later use.

4. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: Step (3) is specifically as follows: Weigh 10% of tobacco extract, add 10% by volume of dilute acetic acid to adjust the pH value of the extract to 5, sterilize at 120°C for 20 minutes, then inoculate Gluconacetic Bacillus into the sterilized solution at an inoculation rate of 6-8% of the weight of the extract, shake, and culture at 30°C for 1 week. The generated brown bacterial cellulose film floats on the surface of the solution and is taken out and homogenized.

5. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: The Gluconacetic Bacillus strain is ZT-01, which is deposited in the General Microbiology Center of China Microbiological Culture Collection Administration with a deposit number of CGMCC No.21544.

6. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: Step (4) is specifically as follows: Add powdered heavy calcium carbonate and anhydrous ethanol into a three-necked flask equipped with a mechanical stirrer and a reflux condenser, and stir for 30 minutes to obtain an anhydrous ethanol mixed solution of calcium carbonate; Weigh stearic acid and dissolve it in anhydrous ethanol, and add it to the mixed solution of heavy calcium carbonate in anhydrous ethanol in batches. After the addition is completed, reflux for 1 hour, cool to room temperature, filter, dry, and grind through a 500-mesh sieve to obtain modified calcium carbonate.

7. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: Step (5) is specifically as follows: The tobacco extract residue of step (2) and the clove oil extract residue of step (1) are mixed, and the beating degree of the slurry is controlled to be 20±2°SR by pulping; Weigh 8% tobacco bacterial cellulose by mass, and make pulp to control the beating degree of the pulp to 50±2°SR; After mixing with cigarette slurry, adjust the slurry concentration to 0.5%, add 0.5% functional additives, 2.5% unmodified spindle calcium carbonate, and use a standard paper former to make a quantitative 60±2g / m 2 The moisture content of the reconstituted tobacco leaf base sheet is controlled at 20-28%.

8. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: In step (6), relative to the mass of the concentrated liquid, the addition ratio of glycerol is 1.0% to 2.5%, the addition ratio of hydroxypropyl methylcellulose is 0.1 to 0.5%, the addition ratio of DAP is 0.8 to 1.0%, the addition ratio of modified heavy calcium carbonate powder is 2.5 to 5.0%, and the addition ratio of malic acid is 0.2 to 0.5%.

9. The method for preparing clove-type characteristic reconstituted tobacco according to claim 1, characterized in that: In step (8): the amount of clove oil applied is 5.0 to 9.0 g / kg.

10. Use of the clove-type specialty reconstituted tobacco leaves obtained according to the preparation method according to any one of claims 1 to 9 in cigarettes.

Images