Caramel-like tobacco flavoring particles, preparation method thereof and application thereof in cigarette flavoring

Abstract

The present application relates to cigarette flavoring technical field, especially to the caramelic cigarette flavoring particle and its preparation method and application in cigarette flavoring. The preparation method comprises: drying and crushing the waste secondary cured tobacco leaves to prepare waste secondary cured tobacco powder; forming a hydrothermal reaction system with the waste secondary cured tobacco powder, amino acid and water, and separating the mixture obtained by hydrothermal reaction to obtain liquid phase; preparing concentrated liquid by vacuum distillation treatment of the liquid phase to obtain caramelic cigarette flavoring; drying and crushing the solid phase obtained by separation to obtain particle skeleton; compounding the caramelic cigarette flavoring with tobacco absolute to prepare compounded flavoring; and mixing the particle skeleton and the compounded flavoring to obtain caramelic cigarette flavoring particle. The method can realize the application of all components of waste secondary tobacco leaves, and the prepared flavoring particle has rich flavoring components, which provides rich material basis for supplementing tobacco flavor, improving aroma richness and sweetness.

Description

TECHNICAL FIELD

[0001] The present application relates to cigarette flavoring technology field, especially to a caramelic cigarette flavor carrier particle and a preparation method and application thereof in cigarette flavoring. BACKGROUND

[0002] In China, flue-cured tobacco is the main tobacco planting, and the yield of flue-cured tobacco accounts for more than 90% of the total yield. Every year, millions of tons of low-grade or out-of-grade tobacco, tobacco fragments, tobacco dust and other waste tobacco are produced in the process of harvesting, transportation, storage and processing. Under the management system of tobacco monopoly, it is required to destroy the tobacco that cannot be recycled. At present, most of the waste tobacco is buried or burned, which not only wastes resources but also pollutes the environment. How to comprehensively recycle the waste tobacco to develop high-value-added products is an important problem that the tobacco industry and the environmental protection department are concerned about, and it has considerable economic, social and ecological benefits.

[0003] There are a large number of studies on the extraction of effective components such as nicotine, solanesol, polysaccharide and protein from waste tobacco leaves. The extraction methods mainly include organic solvent extraction, enzyme extraction, microwave / ultrasonic assisted extraction and supercritical extraction. The diffusion and dissolution of effective components are the main processes in the extraction process, and the system temperature is generally relatively low, so the extracted flavor components are less. SUMMARY

[0004] To solve or partially solve the problems in the related art, the present application provides a caramelic cigarette flavor carrier particle and a preparation method and application thereof in cigarette flavoring.

[0005] The present application provides a preparation method of a caramelic cigarette flavor carrier particle, which comprises:

[0006] Step a), drying and crushing the waste flue-cured tobacco leaves to prepare waste flue-cured tobacco powder;

[0007] Step b), forming a hydrothermal reaction system with the waste flue-cured tobacco powder, amino acid and water, and after hydrothermal reaction, the mixture obtained by reaction is subjected to solid-liquid separation, the liquid phase obtained after separation is subjected to reduced pressure distillation treatment to prepare a concentrated liquid, and a caramelic cigarette flavor is obtained; the solid phase obtained after separation is dried and crushed to obtain a particle skeleton;

[0008] Step c), compounding the caramelic cigarette flavor with tobacco absolute to prepare a compounded flavor;

[0009] Step d), mixing and granulating the particle skeleton and the compounded flavor to obtain a caramelic cigarette flavor carrier particle.

[0010] Further, the step a) is specifically:

[0011] The waste secondary cured tobacco leaves are stripped, dried by hot air until constant weight, naturally cooled, crushed, and then passed through a 20-mesh sieve to collect the lower layer to obtain the waste secondary cured tobacco powder.

[0012] Further, in the step b), the amino acid is one or a mixture of several of proline, lysine, leucine, isoleucine, phenylalanine, threonine, tryptophan and valine.

[0013] Further, in the step b), the mass ratio of the waste secondary cured tobacco powder and the amino acid is (0.3-3):3; and the mass-volume ratio of the total mass of the waste secondary cured tobacco powder and the amino acid to water is 1g:(5mL-30mL).

[0014] Further, in the step b), the temperature of the hydrothermal reaction is 100-150 DEG C, and the time is 3.0-4.0h.

[0015] Further, in the step c), the compounding ratio of the caramelly sweet tobacco flavor and the tobacco absolute is (0.5-5):1.

[0016] Further, in the step d), the granulation is performed by wet granulation, and the mixing ratio of the granule skeleton and the compounded flavor is 100:(2-6).

[0017] The application further provides a caramelly sweet tobacco flavor carrier granule prepared by the method.

[0018] The application further provides a composite filter rod, wherein a tobacco flavor carrier cavity is arranged in the middle part, and the tobacco flavor carrier cavity is arranged with the caramelly sweet tobacco flavor carrier granule.

[0019] The application further provides an application of the caramelly sweet tobacco flavor carrier granule in cigarette flavoring.

[0020] The preparation method of the caramelly sweet tobacco flavor carrier granule provided by the application can have the following beneficial effects:

[0021] (1) The hydrolysis and wall breaking effect under high temperature and high pressure of the hydrothermal reaction can make the tobacco inherent flavor substances and sugar substances as carbonyl sources in the waste secondary cured tobacco leaves be quickly and efficiently dissolved; meanwhile, the Maillard reaction between the amino acid and the tobacco inherent flavor substances can generate nitrogen-containing heterocyclic substances, cyclic rare alcohol ketones and pyrazine substances highlighting caramelly sweet flavor; the efficient extraction of the tobacco inherent flavor substances and the Maillard reaction with the tobacco extract as the carbonyl source can prepare the caramelly sweet tobacco flavor.

[0022] (2) The hydrothermal reaction of the pyrolytic sweet tobacco flavor is further compounded with tobacco absolute oil, highlighting the tobacco aroma characteristics. To supplement the tobacco aroma, improve the richness of aroma and sweetness, and provide a rich material basis. It can improve the defects of insufficient tobacco aroma, poor richness, insufficient sweet taste and high irritation of the cigarette product, and significantly improve the sensory quality of the cigarette.

[0023] (3) The whole component of waste tobacco is applied, which significantly improves the added value of waste tobacco and reduces the waste of tobacco resources; at the same time, it reduces the environmental pollution in the process of tobacco waste treatment.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below in a clear and complete manner. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0027] It should be understood that although the terms "first", "second", "third" and the like are used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0028] The present application is based on the fact that flue-cured tobacco has high sugar content and rich flavor substances, and the inventors consider introducing amino acids to generate more flavor components through Maillard reaction. Nitrogen-containing heterocyclic compounds and cyclic rare alcohol ketones generated by Maillard reaction of carbonyl source and amino source at high temperature are the main contributors of important notes such as caramel, sweet and roasting, and can improve the sensory quality when used for cigarette flavoring. High-temperature and high-pressure hydrothermal reaction with water as solvent has the dual effects of accelerating the rapid and efficient dissolution of natural product effective components and promoting the generation of Maillard reaction products rich in various flavor substances. Using waste and low-grade flue-cured tobacco and external amino acids as raw materials, combined with the advantages of hydrothermal reaction, tobacco endogenous caramel sweet flavor is prepared, which has broad application prospects and can also improve the value of waste and low-grade flue-cured tobacco. Further, the inventors consider further processing and utilization of the solid residue after hydrothermal reaction as a carrier for flavor to prepare a flavor-loaded particle, thereby achieving full utilization of waste and low-grade flue-cured tobacco.

[0029] Therefore, the present application provides a method for preparing a caramel sweet flavor for cigarettes by efficiently extracting and thermally reacting waste and low-grade flue-cured tobacco leaves under high temperature and high pressure with water as a solvent. The caramel sweet flavor for cigarettes is compounded with tobacco absolute oil rich in volatile tobacco native aroma components, and flavor-loaded tobacco particles are prepared based on the hydrothermal residue and the compounded flavor, which can be used for cigarette flavoring to significantly supplement tobacco aroma, improve aroma richness, highlight caramel sweet notes, and have certain sweetening and reducing effects. The method provides flavor materials for making up the defects of insufficient tobacco aroma or poor richness and high irritation of cigarettes, especially low-grade cigarettes, and provides a new idea for comprehensive utilization of waste and low-grade flue-cured tobacco.

[0030] Specifically, the method for preparing the caramel sweet flavor-loaded particle for cigarettes provided by the present application comprises the following steps:

[0031] Step a), drying and crushing waste and low-grade flue-cured tobacco leaves to prepare waste and low-grade flue-cured tobacco powder;

[0032] Step b), preparing a hydrothermal reaction system with the waste and low-grade flue-cured tobacco powder, amino acids and water, and performing hydrothermal reaction on the system to obtain a mixture, performing solid-liquid separation on the mixture, preparing a concentrated liquid by performing vacuum distillation on the liquid phase obtained after the separation, and obtaining a caramel sweet flavor for cigarettes; drying and crushing the solid phase obtained after the separation to obtain a particle skeleton;

[0033] Step c), compounding the caramel sweet flavor for cigarettes with tobacco absolute oil to obtain a compounded flavor;

[0034] Step d), mixing and granulating the particle skeleton and the compounded flavor to obtain a caramel sweet flavor-loaded particle for cigarettes.

[0035] The step a) is a step of pretreating the waste and low-grade flue-cured tobacco leaves to obtain waste and low-grade flue-cured tobacco powder. Processing the waste and low-grade flue-cured tobacco leaves into powder state is beneficial to improve the subsequent extraction efficiency. In order to comprehensively utilize the waste and low-grade flue-cured tobacco, the waste and low-grade flue-cured tobacco leaves in this step include waste and low-grade tobacco leaves generated in the flue-cured tobacco harvesting and conditioning process which cannot be used for cigarette processing and flue-cured tobacco fragments / tobacco dust waste generated in the raw material storage, transportation and cigarette production and processing process. In order to balance the effective component dissolution efficiency and the demand of residue for preparing tobacco particles, the step is specifically preferred as follows: after the waste and low-grade flue-cured tobacco leaves are de-stemmed, hot air drying treatment is performed until the constant weight, natural cooling is performed, crushing is performed, and then the waste and low-grade flue-cured tobacco powder is obtained after passing through a 20-mesh sieve and collecting the lower layer. The temperature of the hot air drying is preferably 40℃.

[0036] The step b) is a step of performing hydrothermal reaction. The waste and low-grade flue-cured tobacco leaves are rich in reducing sugar, which provides abundant carbonyl source for the Maillard reaction. In order to make the Maillard reaction product more abundant, the application increases amino acids in the reaction raw material. The high temperature and high pressure and the water in the subcritical state of the hydrothermal reaction can quickly destroy the cell wall material, accelerate the efficient dissolution of the carbonyl source material such as flavor substances and sugar in the flue-cured tobacco, and occur the Maillard reaction with the amino acids to generate various flavor substances containing nitrogen heterocyclic, cyclic rare alcohol ketone, pyrazine and the like which present caramel sweet and roasting aroma. The temperature of the hydrothermal reaction is preferably 100℃-150℃, and the time is 3.0h-4.0h. More preferably, the temperature is preferably 125℃-145℃, and the time is 3.0h-3.5h. The hydrothermal reaction is accompanied by the Maillard reaction, and many factors affect the Maillard reaction, such as carbonyl source, amino source, raw material ratio, reaction temperature, reaction time, solvent water content and the like. Controlling the reaction conditions can direct the generation of products with prominent caramel sweet aroma. The amino acid in this step is preferably one or a mixture of several of proline, lysine, leucine, isoleucine, phenylalanine, threonine, tryptophan and valine. The mass ratio of the waste and low-grade flue-cured tobacco powder and the amino acid is preferably (0.3-3):1, and more preferably (1-3):1; the mass volume ratio of the total mass of the waste and low-grade flue-cured tobacco powder and the amino acid to water is preferably 1g:(5mL-30mL), and more preferably 1g:(7.5mL-10mL).

[0037] After the hydrothermal reaction, the mixture obtained by the reaction needs to be subjected to solid-liquid separation, and the solid-liquid separation is preferably performed by vacuum filtration method. The liquid phase and the solid phase after the separation are both reserved for use. The liquid phase is subjected to reduced pressure distillation treatment to prepare a concentrated liquid to obtain a caramel sweet tobacco flavor; and the solid phase is dried and crushed to obtain a particle skeleton, i.e. a carrier of the flavor, and the solid phase drying can be performed by hot air drying.

[0038] In order to highlight the caramel sweet flavor while giving prominence to the rich smoke flavor, the caramel sweet tobacco flavor is compounded with tobacco absolute oil according to step c) to obtain a compounded flavor. In this step, the compounded ratio of the caramel sweet tobacco flavor and the tobacco absolute oil is preferably (0.5-5):1, and more preferably (1-3):1. The specific type of the tobacco absolute oil can be selected by those skilled in the art according to factors such as tobacco leaf group and smoke style, for example, the tobacco absolute oil can be Yunyan absolute oil.

[0039] The step d) is a step of mixing the granular framework and the compounded flavor to granulate, thereby obtaining the caramel sweet tobacco flavor carrier granules. On the one hand, the caramel sweet tobacco flavor carrier granules are in a solid state, thus being convenient for storage. On the other hand, due to the adsorption of the granular framework, the release of the flavor components is slowed down, thereby improving the uniformity of the aroma release of the tobacco flavor. In this step, the wet granulation is preferably adopted, that is, the compounded flavor obtained in step c) is added as a liquid for wet granulation to the powder (i.e. the aforementioned granular framework) for granulation. In this step, the mixing ratio of the granular framework and the compounded flavor is preferably 100:(2-6), and more preferably 100:(3-5). After the granulation, the caramel sweet tobacco flavor carrier granules are obtained.

[0040] From the above, it can be seen that the preparation method of the caramel sweet tobacco flavor carrier granules provided by the embodiment of the present application has the following advantages:

[0041] (1) The hydrolysis and wall breaking effect under high temperature and high pressure of the hydrothermal reaction is utilized to rapidly and efficiently dissolve the tobacco inherent flavor substances and the sugar substances as the carbonyl source in the waste and inferior cured tobacco; meanwhile, the Maillard reaction occurs between the amino acids to generate nitrogen-containing heterocyclic substances, cyclic rare alcohol ketone substances and pyrazine substances highlighting the caramel sweet flavor. The efficient extraction of the tobacco endogenous flavor substances is superimposed with the Maillard reaction taking the tobacco extract as the carbonyl source to prepare the caramel sweet tobacco flavor.

[0042] (2) The caramel sweet tobacco flavor obtained by the hydrothermal reaction is further compounded with the tobacco absolute oil to highlight the tobacco inherent flavor characteristics. The rich material basis is provided for supplementing the tobacco flavor, improving the richness of the aroma and the sweetness. The defects such as the insufficient tobacco flavor, the poor richness, the insufficient sweetness and the large stimulation of the cigarette product can be targetedly improved, and the sensory quality of the cigarette is significantly improved.

[0043] (3) All components of the waste and inferior tobacco leaves are applied, the added value of the waste and inferior cured tobacco is significantly improved, and the waste of tobacco resources is reduced; meanwhile, the environmental pollution in the process of treating the tobacco waste is reduced.

[0044] Correspondingly, another embodiment of the present application also provides a caramel sweet tobacco flavor carrier granule prepared according to the method of the above embodiment, and the specific implementation manner is the same as the foregoing, and the caramel sweet tobacco flavor carrier granule also has the beneficial effects of the foregoing, which will not be described herein.

[0045] Another embodiment of the present application also provides a composite filter rod, wherein a cavity is arranged in the middle of the composite filter rod, and the cavity is filled with the above-mentioned coking sweet flavoring particles for cigarettes. The application ratio of the coking sweet flavoring particles is preferably 1.0% to 15.0% of the mass of the tobacco shreds. Specifically, the composite filter rod can be an ABA multi-component composite filter rod, which specifically comprises a first tow filter rod in contact with a cigarette, a cavity, and a second tow filter rod in contact with a mouth during smoking, and the first and second tow filter rods are made of polypropylene fiber tow; the cavity is filled with the above-mentioned coking sweet flavoring particles for cigarettes; and the length of the cavity is preferably 1 / 6 of the total length. The composite filter rod has the above-mentioned technical effects, and thus the embodiment is not described in detail.

[0046] Another embodiment of the present application also provides an application of the above-mentioned coking sweet flavoring particles for cigarettes in cigarette flavoring. Specifically, the coking sweet flavoring particles can be added to a composite filter rod of a traditional cigarette, and the application ratio of the coking sweet flavoring particles is preferably 1.0% to 15.0% of the mass of the tobacco shreds.

[0047] The technical solutions of the present application are further described below in combination with specific embodiments:

[0048] Embodiment 1

[0049] (1) 300 g of low-grade flue-cured tobacco leaves were taken, the stems were removed, and the leaves were dried by hot air at 40℃ for 2.0 h, naturally cooled, crushed by a plant crusher, and sieved through a 20-mesh sieve to collect the lower layer to obtain tobacco powder.

[0050] (2) Proline, lysine, leucine, isoleucine, phenylalanine, threonine, tryptophan, and valine were compounded in equal mass ratios to obtain compounded amino acids.

[0051] (3) 15 g of the tobacco powder, 5 g of the compounded amino acids, and 150 mL of purified water were taken and put into a hot reaction kettle, mixed, and heated at 125℃ for 3.0 h. After pressure relief, vacuum filtration was performed to separate the solid and the liquid. Ten times of experiments were repeated under the same conditions, the filtrates were collected and combined, concentrated by vacuum distillation, and coking sweet flavoring A1 for cigarettes was obtained. GC-MS analysis results of the coking sweet flavoring A1 for cigarettes showed that the content of the components included 2,6-dimethylpyrazine (0.0021 mg / mL), 2-ethyl-6-methyl-pyrazine (0.0049 mg / mL), 2-hydroxymethyl-5-methylpyrazine (0.0013 mg / mL), 5-methylfurfural (0.63 mg / mL), 5-methylfurfural (0.21 mg / mL), 2,5-diformylfuran (0.57 mg / mL), 2,4-dihydroxy-2,5-dimethyl-3(2H)-furanone (0.31 mg / mL), and 5-hydroxymaltol (0.27 mg / mL). The filter residue was collected, treated by conventional hot air drying, crushed, and particle skeleton C1 was obtained.

[0052] (4) The caramelic cigarette flavor A1 was compounded with the Yunyan absolute oil at a mass ratio of 2:1 to prepare a compounded flavor B1. GC-MS analysis of the compounded flavor B1 showed that the content of the components of the compounded flavor was as follows: 2,6-dimethylpyrazine (0.0035 mg / mL), 2-ethyl-6-methyl-pyrazine (0.0023 mg / mL), furfural (1.12 mg / mL), 5-methylfurfuryl alcohol (0.51 mg / mL), 2,5-diformylfuran (0.46 mg / mL), 2,4-dihydroxy-2,5-dimethyl-3(2H)-furanone (0.28 mg / mL), damascenone (0.016 mg / mL), megastigmatrienone (0.039 mg / mL), dihydroactinidiolide (0.023 mg / mL), and the like.

[0053] (5) The compounded flavor B1 was used as the wet material, and the granular skeleton C1 was used as the cellulose and lignin source. The compounded flavor B1 was added into the granulation homogenate at a proportion of 3.0% of the dry powder to prepare a flavor-loaded tobacco granule K1 by using the current wet granulation technology.

[0054] (6) The flavor-loaded tobacco granule K1 was weighed at a proportion of 8.0% of the mass of the cut tobacco to prepare a cigarette sample K1 in the form of an ABA multi-component filter rod. The filter rod was made of polypropylene fiber filaments of equal length at both ends, and the length of the cavity section for filling the flavor-loaded granule in the middle accounted for 1 / 6 of the total length.

[0055] Example 2

[0056] (1) 300 g of flue-cured tobacco leaves were taken, the stems were removed, and the leaves were dried by hot air at 40 ℃ for 2.0 h, naturally cooled, crushed by a plant crusher, sieved through a 20-mesh sieve, and the lower layer was collected to obtain flue-cured tobacco powder.

[0057] (2) Proline and phenylalanine were compounded at a mass ratio of 5:3 to prepare a compounded amino acid.

[0058] (3) 15 g of the flue-cured tobacco powder, 10 g of the compounded amino acid, and 250 mL of pure water were weighed and put into a hot reaction kettle and mixed uniformly. The reaction temperature was set to 135 ℃, and the treatment was performed for 3.5 h. After pressure relief, vacuum filtration was performed for solid-liquid separation. The filtrate was collected and combined under the same conditions for 10 repeated experiments, and concentrated by vacuum distillation to obtain a caramelic cigarette flavor A2. The filter residue was collected, treated by conventional hot air drying, and crushed to obtain a granular skeleton C2.

[0059] (4) The caramelic cigarette flavor A2 was compounded with the Yunyan absolute oil at a mass ratio of 1:1 to prepare a compounded flavor B2.

[0060] (5) Take granular skeleton C2 as cellulose and lignin source, take compound flavor B2 as wet material, add 3.0% of dry powder proportion to the granulation homogenate, and prepare the tobacco particle K2 loaded with flavor by using the current wet granulation technology.

[0061] (6) Take the tobacco particle K2 loaded with flavor by 10.0% of the mass of tobacco, and prepare the cigarette sample K2 in the form of ABA multi-element composite filter rod. The filter rods of equal length made of polypropylene fiber bundles are used at both ends of the filter rod, and the length of the cavity section used for filling the tobacco particle in the middle accounts for 1 / 6 of the total length.

[0062] Example 3

[0063] (1) Take 300 g of flue-cured tobacco leaves, remove stems, dry by hot air at 40°C for 2.0 h, naturally cool, crush by a plant crusher, pass through a 20-mesh sieve, and collect the lower layer to obtain flue-cured tobacco powder.

[0064] (2) Leucine, valine, tryptophan, and lysine are compounded according to an equal mass ratio of 1:1:1:3 to obtain compound amino acids.

[0065] (3) Take 15 g of flue-cured tobacco powder, 15 g of compound amino acids, and 250 mL of pure water, and put them into a hot reaction kettle and mix uniformly. Set the reaction temperature to 145°C and treat for 3.0 h. After pressure relief, vacuum filtration is performed for solid-liquid separation. Repeat the test 10 times under the same conditions, collect the filtrates and combine them, and concentrate by vacuum distillation to obtain the tobacco flavor A3 for caramel sweet; collect the filter residue, perform conventional hot air drying treatment, crush, and obtain the granular skeleton C3.

[0066] (4) Compound the tobacco flavor A3 for caramel sweet and Yunyan pure oil according to a mass ratio of 3:1 to obtain the compound flavor B3.

[0067] (5) Take the granular skeleton C3 as cellulose and lignin source, take the compound flavor B3 as wet material, add 5.0% of dry powder proportion to the granulation homogenate, and prepare the tobacco particle K3 loaded with flavor by using the current wet granulation technology.

[0068] (6) Take the tobacco particle K3 loaded with flavor by 5.0% of the mass of tobacco, and prepare the cigarette sample K3 in the form of ABA multi-element composite filter rod. The filter rods of equal length made of polypropylene fiber bundles are used at both ends of the filter rod, and the length of the cavity section used for filling the tobacco particle in the middle accounts for 1 / 6 of the total length.

[0069] Evaluation of application effect of caramel sweet flavor prepared in Examples 1-3

[0070] The blank control cigarette sample was prepared under the same conditions as the cigarette samples K1, K2 and K3 except that the tobacco-scented carrier particles K1, K2 and K3 prepared in Examples 1, 2 and 3 were not added. The blank control sample also used an ABA multi-component filter rod, but the hollow section did not contain the tobacco-scented carrier particles. The blank control sample and the multi-component filter rod-scented cigarette sample were both equilibrated at a temperature of (22±1) °C and a relative humidity of (60±3) % for 48 h and then stored for use.

[0071] An organoleptic evaluation group was formed by 7 professionals. The cigarette samples K1, K2, K3 and the blank control sample prepared in Examples 1-3 were evaluated according to GB 5606.4-2005 "Cigarettes - Part 4: Sensory requirements". The results are shown in Table 1.

[0072] Table 1. Evaluation of the organoleptic effects of the tobacco-scented carrier particles prepared in the examples in cigarettes

[0073]

[0074] Note: Each index was taken as 0.5 points as the minimum unit of scoring.

[0075] The results of the organoleptic evaluation showed that, compared with the control sample, the cigarette samples K1, K2 and K3 prepared by adding the multi-component filter rod had significantly improved aroma quality, significantly increased aroma richness, increased tobacco fullness, sweet and sweet aftertaste, and reduced irritation. The seven evaluators unanimously agreed that the organoleptic quality of the multi-component filter rod-scented cigarette samples K1, K2 and K3 was significantly better than that of the blank control sample. In summary, the tobacco-scented carrier particles developed from waste tobacco can be used to supplement the aroma of traditional cigarettes, increase the aroma richness, have a pleasant sweet and sweet aroma, have a certain sweetening and irritation-reducing effect, and have a significant positive effect on improving the overall organoleptic quality of cigarettes.

[0076] The above has described various embodiments of the present application, and the above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles, practical applications or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A method for preparing caramel-sweet aroma tobacco flavoring granules, characterized in that, The method comprises the following steps: Step a), drying and crushing waste and low-grade tobacco leaves to prepare waste and low-grade tobacco powder; Step b), preparing a hydrothermal reaction system with the waste and low-grade tobacco powder, amino acids and water, and then performing solid-liquid separation on the mixture obtained after the hydrothermal reaction, preparing a concentrated liquid by performing vacuum distillation treatment on the liquid phase obtained after the separation, and obtaining a smoky and sweet tobacco flavor; drying and crushing the solid phase obtained after the separation to obtain a granular skeleton; the amino acids are one or a mixture of several of proline, lysine, leucine, isoleucine, phenylalanine, threonine, tryptophan and valine; the mass ratio of the waste and low-grade tobacco powder to the amino acids is (0.3-3):3; the mass-volume ratio of the total mass of the waste and low-grade tobacco powder and the amino acids to water is 1g:(5-30) mL; the hydrothermal reaction is performed at a temperature of 125-145 DEG C for 3.0-3.5 hours; Step c), compounding the smoky and sweet tobacco flavor with tobacco absolute to prepare a compounded flavor; Step d), mixing and granulating the granular skeleton and the compounded flavor to obtain smoky and sweet tobacco carrier particles.

2. The production method according to claim 1, characterized by, The step a) specifically comprises the following steps: After the stems of the waste and low-grade tobacco leaves are removed, hot air drying is performed until the weight is constant, and then the waste and low-grade tobacco leaves are naturally cooled, crushed and passed through a 20-mesh sieve, and the lower layer is collected to obtain the waste and low-grade tobacco powder.

3. The preparation method according to claim 1, characterized in that, In the step c), the compounding ratio of the smoky and sweet tobacco flavor to the tobacco absolute is (0.5-5):

1.

4. The method of claim 1, wherein, In the step d), the granulation is performed by wet granulation, and the mixing ratio of the granular skeleton to the compounded flavor is 100:(2-6).

5. A caramelic tobacco flavor carrying particle, characterized by comprising: The smoky and sweet tobacco carrier particles are prepared by the method according to any one of claims 1-4.

6. A composite filter rod, characterized in that, The smoky and sweet tobacco carrier particles are prepared by the method according to any one of claims 1-4.

7. The smoky and sweet tobacco carrier particles according to claim 6 are used for cigarette flavoring.

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