High-dust-content reconstituted tobacco with oak moss fragrance style and preparation method of high-dust-content reconstituted tobacco

Abstract

The invention discloses a high-dust-content reconstituted tobacco with a rubber moss fragrance style and a preparation method thereof. The preparation method comprises the following steps: grinding raw materials into powder; weighing the ground tobacco powder, adding exogenous fibers, an adhesive and an atomizing agent, mixing and stirring to obtain a thick paste compound; flatly paving the thick paste compound on a stainless steel disc to obtain thick paste; feeding the thick slurry into an electric heating constant-temperature blast drying box for drying and shaping, and continuously drying after shaping to complete sheet forming; stripping the sheet from the stainless steel disc by using a scraper knife; mixing the alcohol extract with the ultra-extract, adding purified water, and coating a thin sheet with the mixture; the coated slices are shredded; and weighing the oak moss-flavor extract, dissolving the oak moss-flavor extract, spraying the dissolved oak moss-flavor extract to a sample, and drying and balancing the sample to obtain the oak moss-flavor-style high-powder-content reconstituted tobacco. According to the preparation method, the quality and flavor performance of the tobacco leaves are improved, meanwhile, by-products in the tobacco processing process are effectively utilized, the comprehensive utilization rate of the raw materials is increased, and waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco processing, in particular to an oakmoss-flavored high-dust content reconstituted tobacco leaf and a preparation method thereof. Background Art

[0002] Reconstituted tobacco technology is a technology that uses by-products produced during tobacco processing (such as tobacco leaf fragments, tobacco dust, tobacco stems, etc.) through specific processing to re-produce tobacco products with certain physical forms and chemical properties. The development of this technology has not only greatly improved the comprehensive utilization rate of tobacco leaves and reduced waste in the tobacco processing process, but also provided possibilities for the diversification and high quality of tobacco products. Reconstituted tobacco plays an increasingly important role in modern tobacco products due to its low cost and resource recycling characteristics.

[0003] In the current production of reconstituted tobacco leaves, the mixed use of tobacco stems and tobacco dust is a common practice. This method originates from the consideration of comprehensive utilization of raw materials, aiming to reduce costs and improve the efficiency of raw material use by adding tobacco stems. However, this raw material selection strategy dominated by cost savings actually has a significant negative impact on the quality of reconstituted tobacco leaves. The rough fiber structure of tobacco stems not only affects the appearance and feel of reconstituted tobacco leaves, but also due to the lack of sufficient soluble components in tobacco stems, their application in tobacco products greatly limits the taste and aroma performance of the products. In addition, the use of tobacco stems will also increase the content of harmful components in smoke, posing a potential risk to consumer health. Therefore, increasing the content of tobacco dust in reconstituted tobacco leaves and reducing the use of tobacco stems are of great significance to improving the quality and market competitiveness of reconstituted tobacco leaves.

[0004] In the traditional reconstituted tobacco production process, water extraction technology is widely used to extract water-soluble components from tobacco raw materials for the preparation of coating liquids. However, this method has limitations in extracting non-polar components in tobacco raw materials, such as certain aromas and fat-soluble substances, thereby affecting the quality and flavor of the final reconstituted tobacco. In order to overcome this problem, the present invention proposes a new method combining alcohol extraction and supercritical extraction (abbreviated as "superextraction") technology. The fat-soluble components in tobacco leaves are effectively extracted by alcohol extraction technology, and the above components are further extracted and optimized by superextraction technology. This method aims to improve the formula of the coating liquid, thereby achieving significant optimization of the quality and flavor of reconstituted tobacco leaves.

[0005] In the selection of flavors and fragrances, oakmoss, as a traditional and elegant aroma additive, is increasingly used in the tobacco industry. Oakmoss extract has a unique moss-fresh aroma, which can effectively enhance the aroma texture and give tobacco products a fresh and natural style. In high-end tobacco products, the use of oakmoss can not only enrich the aroma level of the product, but also improve the grade of the product and the consumer's experience. However, despite the many advantages of oakmoss, its application in reconstituted tobacco is still in its infancy, and its potential value needs to be further developed and utilized.

[0006] Therefore, the present invention has made innovations in optimizing the raw material ratio, extraction process and flavor design, especially by increasing the content of tobacco dust in reconstituted tobacco leaves, reducing the use of tobacco stems, and introducing oak moss extract as a flavor and fragrance, aiming to improve the overall quality of reconstituted tobacco leaves and meet the market demand for high-quality tobacco products. These innovations not only help improve the utilization efficiency of tobacco leaf resources, but also contribute new strength to the sustainable development of the tobacco industry. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a high-dust content reconstituted tobacco leaf with an oak moss flavor and a preparation method thereof, and to significantly improve the quality and flavor of the reconstituted tobacco leaf through innovative raw material ratios and extraction processes. In particular, the formula of the coating liquid is optimized by increasing the proportion of tobacco dust, reducing the use of tobacco stems, and combining alcohol extraction and supercritical extraction technology. At the same time, the oak moss extract is introduced as a flavoring to give the reconstituted tobacco leaf a unique mossy fresh aroma, meet the demand for high-quality reconstituted tobacco leaves for cigarette products, and promote the efficient utilization of tobacco leaf resources and the sustainable development of the tobacco industry.

[0008] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0009] A method for preparing oak moss-flavored high-dust content reconstituted tobacco, comprising the following steps:

[0010] (1) Raw material grinding: Grind the tobacco raw material into 100-200 mesh tobacco powder using a grinder;

[0011] (2) Preparation of thick slurry: weigh the ground tobacco powder obtained in step (1), add exogenous fiber, adhesive, and atomizer, mix them, add them to a blender, and stir for 15 minutes to obtain a thick slurry composite;

[0012] (3) Thick slurry diversion: Spread the thick slurry composite evenly on a stainless steel plate to obtain a thick slurry;

[0013] (4) Shaping and sheet forming: The thick slurry is sent to an electric constant temperature blast drying oven and dried at 140°C for 10-15 minutes to form a sheet. After shaping, the sample is further dried at 60°C for 30-35 minutes to complete the sheet forming;

[0014] (5) Winding up the sheet: Use a spatula with a non-stick surface to peel the sheet off the stainless steel plate;

[0015] (6) Coating: After mixing the alcohol extract and the super extract in a ratio of 8:2, add an equal volume to 1.5 times the volume of pure water, and apply it on the sheet, controlling the coating amount to 38±1%;

[0016] (7) Cutting into thin strips: Cut the coated thin strips into thin strips using a cutting machine to obtain thin strip samples;

[0017] (8) Flavor modification: Weigh 0.3% of the total weight of the thin-thread sample of oakmoss extract, dissolve it in 80% ethanol solution, and then spray it onto the thin-thread sample. After drying and balancing, the high-dust content reconstituted tobacco with oakmoss flavor is obtained.

[0018] Preferably, in the above technical solution, in step (1), the temperature in the grinder is controlled not to exceed 35° C., and the tobacco raw material is the tobacco dust of Class I and Class II cigarettes after being mixed and blended in a silk-making workshop.

[0019] Preferably, in the above technical scheme, in step (2), the mass ratio of cigarette dust, exogenous fiber, adhesive and atomizer is (80-100): (10-20): (2-5): (2-4), and the powder dryness in the physical index of the thick slurry is 6.36±1%; the exogenous fiber is bamboo pulp fiber, and the bamboo pulp fiber is cut into small pieces using scissors, and the bamboo pulp fiber is mixed with water in a mass ratio of (10-20): (100-200) and poured into a blender for shearing for 15 minutes to make the fibers evenly dispersed; the adhesive is CMC adhesive; and the atomizer is glycerol.

[0020] Preferably, in the above technical solution, in step (3), each of the stainless steel plates is filled with 65-70 g of the thick slurry compound, the thickness of the thick slurry compound spread on the stainless steel plate is 1-2 cm, and the stainless steel plate is 32 cm long, 22 cm wide and 2.3 cm high.

[0021] Preferably, in the above technical solution, in step (4), after drying is completed, the sample is placed in a balancing box for 24 hours to ensure that the slice maintains appropriate humidity after drying.

[0022] Preferably, in the above technical solution, in step (5), the thin sheet is gently peeled off from the stainless steel plate at an angle of 45 degrees, and the thickness of the thin sheet is 0.200±0.02 mm.

[0023] Preferably, in the above technical solution, in step (6),

[0024] The alcohol extract is prepared by the following method:

[0025] Primary extraction: Mix the tobacco raw material with 80% ethanol at a solid-liquid ratio of 1:6, soak at 50°C for 30 minutes, filter and squeeze with two layers of gauze to obtain a primary extract, and discard the tobacco raw material residue;

[0026] Secondary extraction: add 0.8 times the amount of tobacco raw material in the second extraction, add the primary extraction solution, soak at 50℃ for 30min, filter and squeeze with two layers of gauze to obtain the secondary extraction solution, and discard the tobacco raw material residue;

[0027] Purification of secondary extract: purification conditions are 4000r / min, centrifugation for 5min, concentration at 60℃, and the obtained alcohol extract has a specific gravity of 1.230±0.005;

[0028] The super extract is prepared by the following method:

[0029] After supercritical extraction of tobacco raw materials, the obtained superextract is left to stand for ≥12 hours, and the paste liquid is separated into layers;

[0030] The super-extraction lower layer liquid is micro-filtered through a polypropylene microporous folded filter element with a diameter of 68mm*250mm and a pore size of 2μm to obtain a super-extraction clear liquid;

[0031] The tobacco raw materials of the alcohol extract and the super extract are all the tobacco dust of Class I and Class II cigarettes after being mixed and blended in the silk-making workshop.

[0032] Preferably, in the above technical solution, in step (6), during the mixing process of the coating liquid, the temperature of the mixed liquid is controlled not to exceed 25°C. After the coating is completed, the sample is dried at 60°C for 30 minutes to allow the coating liquid to penetrate and dry evenly; in step (7), the width of the thin wire is 0.9 mm.

[0033] Preferably, in the above technical scheme, in step (8), specifically: weigh a certain weight of the thin wire sample, evenly place it on a stainless steel tray, weigh 0.3% of the total weight of the sample oak moss extract, dissolve the oak moss extract in 80% ethanol solution, mix evenly, and spray it on the thin wire sample, after spraying, immediately put the sample into an oven preheated to 120°C, quickly dry it for 1 minute, take it out and quickly mix it, and dry it again for 1 minute to keep the moisture content of the sample at 11-13%, and then put the thin wire sample into a constant temperature and humidity chamber for equilibration for 24 hours. After the equilibration is completed, the oak moss flavor style high dust content reconstituted tobacco leaves are obtained.

[0034] A high fines content reconstituted tobacco with an oakmoss aroma.

[0035] Application of high dust content reconstituted tobacco with oakmoss flavor in cigarette production.

[0036] The above technical solution of the present invention has the following beneficial effects:

[0037] (1) Improving product quality: By increasing the content of tobacco dust in reconstituted tobacco leaves and reducing the use of tobacco stems, the physical form and chemical properties of reconstituted tobacco leaves are effectively improved, thereby improving the overall quality and usability of reconstituted tobacco leaves.

[0038] (2) Optimizing flavor and aroma: The combination of alcohol extraction and supercritical extraction technology, as well as the addition of the unique aroma of oakmoss extract, significantly optimizes the flavor and aroma of reconstituted tobacco, further meeting the cigarette industry's demand for diverse quality of reconstituted tobacco.

[0039] (3) Cost-effectiveness and resource utilization: This invention improves the comprehensive utilization rate of raw materials and reduces waste by utilizing the by-products generated during tobacco processing, while also reducing production costs and improving economic benefits.

[0040] (4) Environmental friendliness and sustainable development: Reducing the use of tobacco stems and optimizing the extraction process not only reduces the content of harmful components in the smoke and reduces the potential risks to consumer health, but also meets the requirements of environmental protection and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0042] Figure 1 The present invention discloses a process for preparing oakmoss-flavored high-dust content reconstituted tobacco leaves of the present application. DETAILED DESCRIPTION

[0043] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 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 otherwise specifically stated.

[0044] 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.

[0045] A high-dust content reconstituted tobacco leaf with an oak moss flavor and a preparation method thereof, comprising raw material grinding, thick slurry preparation, thick slurry diversion, coating, baking and forming, rolling and shredding, and flavor modification, and the steps are as follows:

[0046] (1) Raw material grinding:

[0047] The tobacco raw material is ground with a grinder to produce tobacco dust with a particle size of 100-200 meshes. During the grinding process, the temperature in the grinder is controlled not to exceed 35°C to maintain the chemical stability of the tobacco dust.

[0048] The tobacco raw material is the tobacco dust of Class I and Class II cigarettes after being mixed and blended in the silk-making workshop provided by the cigarette factory;

[0049] Mill model: FOSS SCINO CT193 cyclone sample mill.

[0050] (2) Preparation of thick slurry:

[0051] Weigh 80-100 parts by weight of the ground tobacco powder in step (1), 10-20 parts by weight of exogenous fiber, 2-5 parts by weight of adhesive, and 2-4 parts by weight of atomizer, mix them, add them into a blender, and stir and mix for 15 minutes to prepare a thick slurry. According to the preliminary experimental results or production requirements, the ratio of exogenous fiber, adhesive and atomizer is adjusted in time to optimize the physical and chemical properties of the thick slurry and achieve the best processing effect.

[0052] The physical index of the thick slurry is 6.36±1% for dryness of powder;

[0053] The exogenous fiber is bamboo pulp fiber, which is cut into small pieces using scissors, and 100-200 parts by weight of water are added, and the pieces are poured into a blender and sheared for 15 minutes to make the fibers evenly dispersed;

[0054] The adhesive is a CMC adhesive, which is a product currently sold on the market, such as the CMC adhesive produced by Sinopharm Chemical Reagent Co., Ltd.;

[0055] The atomizer is glycerin, which is a product currently sold on the market, such as glycerin produced by Phoenix Chemical Company;

[0056] The mixer model is Qihe KS-767.

[0057] (3) Thick slurry diversion:

[0058] The thick slurry compound in step (2) is evenly spread on a stainless steel plate, with each steel plate being filled with 65-70 g of the thick slurry compound.

[0059] The thickness of the slurry composite spread on the stainless steel plate is 1-2 cm.

[0060] The stainless steel plate is a product sold on the market, such as a rectangular stainless steel plate with a length of 32 cm, a width of 22 cm, and a height of 2.3 cm;

[0061] (4) Shaping and sheet forming:

[0062] The thick slurry spread in step (3) is sent to an electric constant temperature blast drying oven and dried at 140°C for 10-15 minutes to shape the thin sheet. After the thin sheet is shaped, the sample is further dried at 60°C for 30-35 minutes to form the thin sheet. After drying, the sample is placed in a balancing box for 24 hours to ensure that the thin sheet maintains appropriate humidity after drying, thereby optimizing the bending strength and other physical properties of the thin sheet.

[0063] (5) Rolling up the sheet:

[0064] Using a spatula with a non-stick surface, gently peel the sheet off the stainless steel plate at a 45-degree angle, ensuring the integrity and flatness of the sheet.

[0065] The thickness of the sheet is 0.200±0.02 mm.

[0066] (6) Coating:

[0067] The thin slice obtained in step (5) is subjected to coating treatment. The coating solution is prepared as follows: First, the alcohol extract and the super extract are mixed in a ratio of 8:2. Subsequently, an equal volume to 1.5 times the volume of pure water is added to the mixed solution to adjust the viscosity and concentration of the coating solution to make it suitable for the coating process. During the coating process, the distribution of the coating solution on the thin slice is adjusted by controlling the coating speed and the movement speed of the thin slice to ensure that the final dipping amount of the thin slice is controlled at 38±1%. The calculation of this dipping amount is based on the percentage increase in the total weight of the thin slice after coating to ensure that the coating solution evenly covers and deeply penetrates the thin slice to enhance the aroma performance and quality stability of the product. During the mixing process of the coating solution, the temperature of the mixed solution is controlled not to exceed 25°C to prevent premature evaporation of volatile components, and to ensure that after the coating is completed, the sample is dried at 60°C for 30 minutes to allow the coating solution to evenly penetrate and dry.

[0068] The coating liquid adopts the production process of "alcohol extraction + super extraction";

[0069] The alcohol-extracted and ultra-extracted tobacco raw materials are the tobacco dust of Class I and Class II cigarettes after being mixed and blended in the silk-making workshop provided by the cigarette factory.

[0070] The alcohol extraction process requirements are as follows: in the first extraction, the ratio of tobacco raw material to 80% ethanol is 1:6, the soaking temperature is 50°C, the soaking time is 30 minutes, and after the soaking is completed, two layers of gauze are used to filter and squeeze to obtain the first extract, and the tobacco raw material residue is discarded. In the second extraction, the amount of tobacco raw material added for the second time is 0.8 times the amount of the first tobacco raw material, the first extract is added, the soaking temperature is 50°C, the soaking time is 30 minutes, and two layers of gauze are used to filter and squeeze to obtain the second extract, and the tobacco raw material residue is discarded. The secondary extract is purified under the conditions of 4000r / min and centrifugation for 5min. The extract after centrifugation is concentrated by vacuum rotary evaporation, and the heating temperature is 60°C. The prepared alcohol extract has a specific gravity of 1.230±0.005.

[0071] The ultra-extraction process requirements are as follows: after supercritical extraction of the raw material, the ultra-extract obtained is left to stand for ≥12 hours, and the paste liquid is separated into layers; the ultra-extraction lower layer liquid is microfiltered through a polypropylene microporous folded filter element (φ68mm*250mm, pore size 2μm) to prepare an ultra-extraction clear liquid.

[0072] (7) Cut into strips:

[0073] The sample obtained in step (6) was cut into strips using a laboratory-specific stripping machine, and the stripping width was 0.9 mm to prepare thin strips.

[0074] The shredder is a product currently sold on the market, such as a shredder of model QS-5D produced by Kaifeng Zhongjie Machinery Technology Co., Ltd.

[0075] (8) Fragrance modification:

[0076] Weigh a certain weight of the thin silk sample prepared in step (7) and place it evenly on a stainless steel tray. Weigh 0.3% of the total weight of the sample to obtain oak moss extract, and mix it evenly with a certain volume of 80% ethanol solution to ensure that the oak moss extract is completely dissolved. Use a laryngeal sprayer to evenly spray the mixed solution onto the sample. After spraying, immediately place the sample in an oven preheated to 120°C, dry it quickly for 1 minute, take it out and mix it quickly, and dry it again for 1 minute until the moisture content of the sample reaches 11.0±1.5%. After completion, place the sample in a constant temperature and humidity chamber (humidity 60±2%, temperature 22±1°C) for equilibration for 24 hours to ensure that the spices are fully penetrated and fixed. After equilibration is completed, a high-dust content reconstituted tobacco leaf with an oak moss flavor style can be obtained for rolling and evaluation.

[0077] The oak moss extract is a product sold on the market, such as the oak moss extract produced by Zhuhai Keli Chuang Biotechnology Co., Ltd., product model: K10799-02;

[0078] The physical properties of the oakmoss-flavored high-dust content reconstituted tobacco are: dust content greater than 80%, thickness 0.20±0.02mm, basis weight 95±2g / m2, tensile strength 3±1kN / m, and moisture content 11.0±1.5%.

[0079] By increasing the proportion of reconstituted tobacco dust, optimizing the coating liquid through "alcohol extraction + super extraction" and using oakmoss extract as a fragrance to modify the reconstituted tobacco, the advantages are: the product has a unique moss-fresh aroma, good aroma richness, moderate smoke concentration, light woody odor, less residue in the mouth, and the production process is suitable for industrial production.

[0080] A high-dust content reconstituted tobacco leaf with an oakmoss flavor and a preparation method thereof, which includes the following process steps: raw material grinding, thick slurry preparation, thick slurry diversion, shaping and thin sheet forming, thin sheet rolling, coating, drying, shredding, and flavor modification: (1) High dust content design, by optimizing the raw material ratio, significantly increasing the tobacco dust content in the reconstituted tobacco leaf, reducing the use of tobacco stems, and improving the overall quality and smoking experience of the reconstituted tobacco leaf. (2) Innovative extraction process, using a combination of alcohol extraction and supercritical extraction (abbreviated as "superextraction") technology to replace traditional water extraction technology, effectively extracting fat-soluble components in tobacco leaves, optimizing the formula of the coating liquid, and thus improving the chemical properties and flavor performance of the reconstituted tobacco leaf. (3) Application of oakmoss flavor extract, introducing oakmoss flavor extract as a flavor modification, giving the reconstituted tobacco leaf a unique moss fresh aroma, and improving the aroma texture and grade of tobacco products. Through the above-mentioned innovations in raw material ratio, extraction process and flavor design, the reconstituted tobacco produced by the present invention has a personalized aroma of moss green aroma, the sensory flavor and aroma performance of the product are further optimized, the woody odor is lighter, and less residue is left in the mouth. The production method is suitable for industrial production.

[0081] The reconstituted tobacco leaf of the invention is produced by a thick slurry method, the tobacco raw material is 100-200 mesh tobacco dust, and no tobacco stems are used.

[0082] The coating liquid used in the present invention adopts an "alcohol extraction + super extraction" extraction process, wherein tobacco raw materials are extracted and purified twice with 80% ethanol to obtain an alcohol extract having a specific gravity of 1.230±0.005; the tobacco raw materials are subjected to supercritical extraction, standing, paste-liquid stratification, and microfiltration to prepare a super extraction clear liquid; the alcohol extract and the super extraction liquid are mixed in a ratio of 8:2, and then an equal volume to 1.5 times the volume of pure water is added to the mixed liquid to ensure that the final dipping amount is 38±1%.

[0083] The invention adopts oak moss extract as a flavor modification, weighs 0.3% of the total weight of the sample, mixes the oak moss extract with a certain volume of 80% ethanol solution, ensures that the oak moss extract is completely dissolved, sprays the mixed solution evenly onto the sample using a throat sprayer, and prepares oak moss flavored high dust content reconstituted tobacco leaves after drying and balancing.

[0084] The reconstituted tobacco produced by the present invention has a tobacco dust content greater than 80%, a thickness of 0.20±0.02mm, and a basis weight of 95±2g / m 2 , tensile strength 3±1kN / m, moisture content 11.0±1.5%.

[0085] The following is a detailed description of the embodiments:

[0086] Example 1

[0087] (1) Raw material grinding: Select the first and second category cigarette butts from the silk-making workshop, with a total amount of 1000g. Use a grinder to grind the cigarette butts to a particle size of 120-160 mesh. During the grinding process, the temperature inside the grinder is lower than 34°C.

[0088] (2) Preparation of thick slurry: In the process of preparing thick slurry, 850 g of ground tobacco powder, 150 g of bamboo pulp fiber, 30 g of sodium carboxymethyl cellulose (CMC) as a binder, and 30 g of glycerin as an atomizer are taken. The above raw materials are put into a blender, 1200 g of purified water is added, and stirred at room temperature for 15 minutes until the thick slurry is uniform and has no obvious particles. The dryness of the thick slurry powder is 6.39%.

[0089] (3) Thick slurry diversion: The prepared thick slurry was evenly coated on a stainless steel tray with a size of 32 cm × 22 cm. The thickness of the thick slurry was 1.3 cm.

[0090] (4) Shaping and sheet forming: Place the stainless steel tray in an oven preheated to 140°C, bake for 10 minutes, then adjust the oven temperature to 60°C and continue baking for 35 minutes until the sheet is formed. After drying, place the sample in a balancing box for 24 hours.

[0091] (5) Rolling up the sheet: Use a spatula with a non-stick surface to gently peel the sheet off the stainless steel plate at a 45-degree angle, ensuring the integrity and flatness of the sheet. The thickness of the sheet is 0.21 mm.

[0092] (6) Coating: According to the extraction solution preparation method in the technical solution, the alcohol extract and the super extract prepared in advance are mixed in a ratio of 8:2, and an equal volume of pure water is added for dilution to prepare a coating solution, and the coating solution is evenly coated on the surface of the sheet according to the dipping amount of 38%. After coating, the sample is dried at 60°C for 30 minutes to allow the coating solution to penetrate evenly and dry.

[0093] (7) Cutting into strips: Use a laboratory-specific cutting machine to cut the coated strips into thin strips with a width of 0.9 mm.

[0094] (8) Flavor modification: Spread the cut shreds evenly on a stainless steel tray, weigh 0.3% of the total weight of the sample, and mix it evenly with 100 ml of 80% ethanol solution to ensure that the oak moss extract is completely dissolved. Use a throat sprayer to evenly spray the mixed solution onto the sample. After spraying, immediately place the sample in an oven preheated to 120°C, dry it quickly for 1 minute, take it out and mix it quickly, and dry it again for 1 minute. At this time, the moisture content of the sample is 11.8%. Then place the sample in a constant temperature and humidity chamber for 24 hours. After the balancing is completed, the high-dust content reconstituted tobacco leaf with oak moss flavor is obtained.

[0095] The high dust content reconstituted tobacco leaves prepared in Example 1 have the following physical properties: dust content 82%, thickness 0.21 mm, basis weight 95 g / m 2 , tensile strength 3.2kN / m.

[0096] Example 2

[0097] (1) Raw material grinding: Select the first and second category cigarette butts from the silk-making workshop, with a total amount of 1500g. Use a grinder to grind the cigarette butts to a particle size of 140-190 mesh. During the grinding process, the temperature inside the grinder is lower than 33°C.

[0098] (2) Preparation of thick slurry: In the process of preparing thick slurry, 1000 g of ground tobacco powder, 180 g of bamboo pulp fiber, 40 g of sodium carboxymethyl cellulose (CMC) as a binder, and 33 g of glycerol as an atomizer are taken. The above raw materials are put into a blender, 1300 g of purified water is added, and stirred at room temperature for 15 minutes until the thick slurry is uniform and has no obvious particles. The dryness of the thick slurry powder is 6.98%.

[0099] (3) Thick slurry diversion: The prepared thick slurry is evenly coated on a stainless steel tray with a size of 32 cm × 22 cm. The thickness of the thick slurry is 1.5 cm.

[0100] (4) Shaping and sheet forming: Place the stainless steel tray in an oven preheated to 140°C, bake for 10 minutes, then adjust the oven temperature to 60°C and continue baking for 35 minutes until the sheet is formed. After drying, place the sample in a balancing box for 24 hours.

[0101] (5) Rolling up the sheet: Use a spatula with a non-stick surface to gently peel the sheet off the stainless steel plate at a 45-degree angle, ensuring the integrity and flatness of the sheet. The thickness of the sheet is 0.22 mm.

[0102] (6) Coating: According to the extraction solution preparation method in the technical solution, the alcohol extract and the super extract prepared in advance are mixed in a ratio of 8:2, and an equal volume of pure water is added for dilution to prepare a coating solution, and the coating solution is evenly coated on the surface of the sheet according to the dipping amount of 37.5%. After coating, the sample is dried at 60°C for 30 minutes to allow the coating solution to penetrate evenly and dry.

[0103] (7) Cutting into strips: Use a laboratory-specific cutting machine to cut the coated strips into thin strips with a width of 0.9 mm.

[0104] (8) Flavor modification: Spread the cut shreds evenly on a stainless steel tray, weigh 0.3% of the total weight of the sample in oakmoss extract, mix evenly with 120 ml of 80% ethanol solution, ensure that the oakmoss extract is completely dissolved, and use a throat sprayer to evenly spray the mixed solution onto the sample. After spraying, immediately place the sample in an oven preheated to 120°C, dry quickly for 1 minute, take out and mix quickly, and dry again for 1 minute. At this time, the moisture content of the sample is 12.3%, and then place the sample in a constant temperature and humidity chamber for 24 hours. After the balancing is completed, the high dust content reconstituted tobacco leaf with oakmoss flavor is obtained.

[0105] The high dust content reconstituted tobacco leaves prepared in Example 2 have the following physical properties: dust content 84%, thickness 0.22 mm, basis weight 96 g / m 2 , tensile strength 3.5kN / m.

[0106] Embodiment 3:

[0107] (1) Raw material grinding: Select the first and second category cigarette dust from the cigarette factory's silk workshop, with a total amount of 1300g. Use a grinder to grind the dust to a particle size of 150-200 mesh. During the grinding process, the temperature inside the grinder is lower than 35°C.

[0108] (2) Preparation of thick slurry: In the process of preparing thick slurry, 950 g of ground tobacco powder, 165 g of bamboo pulp fiber, 38 g of sodium carboxymethyl cellulose (CMC) as a binder, and 30 g of glycerin as an atomizer are taken. The above raw materials are put into a blender, 1200 g of purified water is added, and stirred at room temperature for 15 minutes until the thick slurry is uniform and has no obvious particles. The dryness of the thick slurry powder is 7.13%.

[0109] (3) Thick slurry diversion: The prepared thick slurry was evenly coated on a stainless steel tray with a size of 32 cm × 22 cm. The thickness of the thick slurry was 1.4 cm.

[0110] (4) Shaping and sheet forming: Place the stainless steel tray in an oven preheated to 140°C, bake for 10 minutes, then adjust the oven temperature to 60°C and continue baking for 35 minutes until the sheet is formed. After drying, place the sample in a balancing box for 24 hours.

[0111] (5) Rolling up the sheet: Use a spatula with a non-stick surface to gently peel the sheet off the stainless steel plate at a 45-degree angle, ensuring the integrity and flatness of the sheet. The thickness of the sheet is 0.2 mm.

[0112] (6) Coating: According to the extraction solution preparation method in the technical solution, the alcohol extract and the super extract prepared in advance are mixed in a ratio of 8:2, and an equal volume of pure water is added for dilution to prepare a coating solution, and the coating solution is evenly coated on the surface of the sheet according to the dipping amount of 38.3%. After the coating is completed, the sample is dried at 60°C for 30 minutes to allow the coating solution to penetrate evenly and dry.

[0113] (7) Cutting into strips: Use a laboratory-specific cutting machine to cut the coated strips into thin strips with a width of 0.9 mm.

[0114] (8) Flavor modification: Spread the cut shreds evenly on a stainless steel tray, weigh 0.3% of the total weight of the sample in oakmoss extract, mix evenly with 110 ml of 80% ethanol solution, ensure that the oakmoss extract is completely dissolved, and use a throat sprayer to evenly spray the mixed solution onto the sample. After spraying, immediately place the sample in an oven preheated to 120°C, dry quickly for 1 minute, take out and mix quickly, and dry again for 1 minute. At this time, the moisture content of the sample is 12.1%. Then place the sample in a constant temperature and humidity chamber for 24 hours. After the balancing is completed, the high dust content reconstituted tobacco leaf with oakmoss flavor is obtained.

[0115] The high dust content reconstituted tobacco leaves prepared in Example 3 have the following physical properties: dust content 86%, thickness 0.2 mm, basis weight 94 g / m 2 , tensile strength 3.8kN / m.

[0116] Effect evaluation:

[0117] The reconstituted tobacco shreds prepared in each embodiment were rolled, and after sensory evaluation, the samples had rich and coordinated aroma, a good degree of fusion of the moss aroma and the tobacco aroma, a large smoke concentration, a light woody odor, a light smoke burning sensation, and less residue in the mouth.

[0118] 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 oak moss-flavored high-dust content reconstituted tobacco, characterized in that: The following steps are involved: (1) Raw material grinding: Grind the tobacco raw material into 100-200 mesh tobacco powder using a grinder; (2) Preparation of thick slurry: weigh the ground tobacco powder obtained in step (1), add exogenous fiber, adhesive, and atomizer, mix them, add them to a blender, and stir for 15 minutes to obtain a thick slurry composite; (3) Thick slurry diversion: Spread the thick slurry composite evenly on a stainless steel plate to obtain a thick slurry; (4) Shaping and sheet forming: The thick slurry is sent to an electric constant temperature blast drying oven and dried at 140°C for 10-15 minutes to form a sheet. After shaping, the sample is further dried at 60°C for 30-35 minutes to complete the sheet forming; (5) Winding up the sheet: Use a spatula with a non-stick surface to peel the sheet off the stainless steel plate; (6) Coating: After mixing the alcohol extract and the super extract in a ratio of 8:2, add an equal volume to 1.5 times the volume of pure water, and coat the thin film, controlling the coating amount to 38±1%; (7) Cutting into thin strips: Cut the coated thin strips into thin strips using a cutting machine to obtain thin strip samples; (8) Flavor modification: Weigh 0.3% of the total weight of the thin-thread sample of oakmoss extract, dissolve it in 80% ethanol solution, and then spray it onto the thin-thread sample. After drying and balancing, the high-dust content reconstituted tobacco with oakmoss flavor is obtained.

2. The method for preparing the high fines content reconstituted tobacco with oak moss flavor according to claim 1, characterized in that: In step (1), the temperature in the grinder is controlled not to exceed 35° C., and the tobacco raw material is the tobacco dust of Class I and Class II cigarettes after being mixed and blended in a silk-making workshop.

3. The method for preparing the high fines content reconstituted tobacco with oak moss flavor according to claim 1, characterized in that: In step (2), the mass ratio of cigarette dust, exogenous fiber, adhesive and atomizer is (80-100): (10-20): (2-5): (2-4), and the powder dryness in the physical index of the thick slurry is 6.36±1%; the exogenous fiber is bamboo pulp fiber, which is cut into small pieces with scissors, and the bamboo pulp fiber is mixed with water in a mass ratio of (10-20): (100-200) and poured into a blender for shearing for 15 minutes to make the fiber dispersed evenly; the adhesive is CMC adhesive; and the atomizer is glycerol.

4. The method for preparing the high fines content reconstituted tobacco with oak moss flavor according to claim 1, characterized in that: In step (3), each stainless steel plate is filled with 65-70 g of the thick slurry compound, the thickness of the thick slurry compound spread on the stainless steel plate is 1-2 cm, and the stainless steel plate is 32 cm long, 22 cm wide, and 2.3 cm high; in step (4), after drying, the sample is placed in a balance box for 24 hours to ensure that the slice maintains appropriate humidity after drying.

5. The method for preparing the oak moss flavored high dust content reconstituted tobacco according to claim 1, characterized in that: In step (5), the thin sheet is gently peeled off from the stainless steel plate at an angle of 45 degrees, and the thickness of the thin sheet is 0.200±0.02 mm.

6. The method for preparing the oak moss flavored high dust content reconstituted tobacco according to claim 1, characterized in that: In step (6), The alcohol extract is prepared by the following method: Primary extraction: Mix the tobacco raw material with 80% ethanol at a solid-liquid ratio of 1:6, soak at 50°C for 30 minutes, filter and squeeze with two layers of gauze to obtain a primary extract, and discard the tobacco raw material residue; Secondary extraction: add 0.8 times the amount of tobacco raw material in the second extraction, add the primary extraction solution, soak at 50℃ for 30min, filter and squeeze with two layers of gauze to obtain the secondary extraction solution, and discard the tobacco raw material residue; Purification of secondary extract: purification conditions are 4000r / min, centrifugation for 5min, concentration at 60℃, and the obtained alcohol extract has a specific gravity of 1.230±0.005; The super extract is prepared by the following method: After supercritical extraction of tobacco raw materials, the obtained superextract is left to stand for ≥12 hours, and the paste liquid is separated into layers; The super-extraction lower layer liquid is micro-filtered through a polypropylene microporous folded filter element with a diameter of 68mm*250mm and a pore size of 2μm to obtain a super-extraction clear liquid; The tobacco raw materials of the alcohol extract and the super extract are all the tobacco dust of Class I and Class II cigarettes after being mixed and blended in the silk-making workshop.

7. The method for preparing the high fines content reconstituted tobacco with oak moss flavor according to claim 1, characterized in that: In step (6), during the mixing process of the coating liquid, the temperature of the mixed liquid is controlled not to exceed 25°C. After the coating is completed, the sample is dried at 60°C for 30 minutes to allow the coating liquid to penetrate and dry evenly. In step (7), the width of the thin wire is 0.9 mm.

8. The method for preparing the high fines content reconstituted tobacco with oak moss flavor according to claim 1, characterized in that: In step (8), specifically: weigh a certain weight of the thin wire sample, evenly place it on a stainless steel tray, weigh 0.3% of the total weight of the sample oak moss extract, dissolve the oak moss extract in 80% ethanol solution, mix evenly, and spray it on the thin wire sample. After spraying, immediately put the sample into an oven preheated to 120°C, quickly dry it for 1 minute, take it out and quickly mix it, and dry it again for 1 minute to keep the moisture content of the sample at 11-13%, and then put the thin wire sample into a constant temperature and humidity chamber for equilibration for 24 hours. After the equilibration is completed, the high dust content reconstituted tobacco leaf with oak moss flavor is obtained.

9. Oakmoss-flavored high-dust content reconstituted tobacco obtained by the preparation method according to any one of claims 1 to 8.

10. Use of the oakmoss flavored high dust content reconstituted tobacco according to claim 9 in cigarette production.

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