Preparation and application of functional characteristic reconstituted tobacco

Abstract

The invention discloses preparation and application of functional characteristic reconstituted tobacco. The reconstituted tobacco comprises formula essential oil, and the formula essential oil comprises 6 parts of oroxylum indicum, 5 parts of salvia miltiorrhiza, 5 parts of rabdosia rubescens, 6 parts of liquorice, 6 parts of mint and 6 parts of blackberry lily. Or 6 parts of subprostrate sophora, 6 parts of honeysuckle, 6 parts of mangnolia officinalis, 6 parts of blackberry lily, 6 parts of rabdosia rubescens and 5 parts of poria cocos. The preparation method of the reconstituted tobacco comprises the following steps: screening tobacco powder; the method comprises the following steps: uniformly mixing tobacco powder, a smoke agent, CMC (Carboxymethyl Cellulose), wood pulp fibers and water, and placing the mixture on a workbench of a coating tester; adjusting a knife roll gap, setting temperature for baking, adjusting moisture of the reconstituted tobacco, and shredding to obtain filamentous reconstituted tobacco; and dissolving the fragrance base module containing the formula essential oil in ethanol, and applying the solution to the filamentous reconstituted tobacco in a spraying form, so as to obtain the functional characteristic reconstituted tobacco. The prepared functional reconstituted tobacco can give full play to the unique fragrance of the traditional Chinese medicine essential oil, the experience degree of consumers is improved, the disease prevention and treatment advantages of the functional reconstituted tobacco are achieved, and the health requirements of the consumers are met.

Description

Technical Field

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

[0002] Reconstituted tobacco is a recycled product produced by processing tobacco raw materials such as tobacco stems, tobacco dust and broken tobacco flakes. Due to the high content of lignin in tobacco stems and wood pulp fibers, the woody smell and irritation of the reconstituted tobacco are relatively strong. How to use raw materials and reconstructing processes to achieve quality reconstruction and develop high-quality reconstituted tobacco products with good synergy with cigarette products is a problem that needs to be solved urgently.

[0003] Smoking is closely related to the occurrence of many respiratory diseases, such as chronic pharyngitis, chronic obstructive pulmonary disease, chronic bronchitis, etc. During the burning process of cigarettes, the smoke released contains some harmful substances, including oxides and free radicals, which can directly damage respiratory cells.

[0004] Among long-term smokers, chronic pharyngitis is the most common, which is manifested as chronic inflammation of the pharyngeal mucosa, submucosal and lymphatic tissues, with the characteristics of long course and easy recurrence. At present, the treatment of chronic pharyngitis mainly includes drug therapy, mainly including chemical drugs, traditional Chinese medicine, chemical drugs combined with traditional Chinese medicine, etc. Compared with most drugs synthesized using modern technology, extracts obtained from aromatic plants are more natural. On the basis of correct use, there are no reports of harm to the human body, and there will be no adverse effects of dependence or drug resistance. Natural plant essential oils are not only commonly used tobacco flavors. In the field of traditional Chinese medicine research, the aromatic smell of natural plant Chinese herbal medicines or the aromatic essential oils extracted from them can be used on the human body through smell and touch to achieve the purpose of treating certain diseases. If the fragrance and functional advantages of traditional Chinese medicine essential oils can be organically combined with the development technology of reconstituted tobacco leaves, it can not only give full play to the unique aroma of traditional Chinese medicine essential oils and enhance the consumer experience, but also use its unique advantages in disease prevention and treatment to meet the health needs of consumers. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a preparation and application of a functional characteristic reconstituted tobacco leaf, so as to achieve the purpose of preventing and treating chronic pharyngitis while improving the sensory experience of consumers.

[0006] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0007] A formula essential oil, wherein the formula essential oil is a first formula essential oil or a second formula essential oil, wherein the first formula essential oil comprises the following components in parts by weight: 6 parts of Oroxylum indica, 5 parts of Salvia miltiorrhiza, 5 parts of Rabdosia rubescens, 6 parts of Licorice, 6 parts of Mentha, and 6 parts of Belamcanda chinensis; and the second formula essential oil comprises the following components in parts by weight: 6 parts of Sophora flavescens, 6 parts of Honeysuckle, 6 parts of Magnolia officinalis, 6 parts of Belamcanda chinensis, 6 parts of Rabdosia rubescens, and 5 parts of Poria.

[0008] A fragrance base module, which is a first fragrance base module or a second fragrance base module, wherein the first fragrance base module comprises the following components by mass: 50-60% of a first formula essential oil, 10-15% of a wolfberry extract, 10-15% of a wild chrysanthemum extract, 5-15% of a bayberry extract, and 15-20% of ethyl maltol; and the second fragrance base module comprises the following components by mass: 50-60% of a second formula essential oil, 10-15% of an astragalus extract, 10-15% of a loquat leaf extract, and 15-20% of ethyl maltol.

[0009] The invention discloses an application of a formula essential oil or an aroma-based module in preparing functional and characteristic reconstituted tobacco leaves.

[0010] A method for preparing functional characteristic reconstituted tobacco leaves comprises the following steps:

[0011] (1) Place the tobacco powder raw material in a vibrating sieving machine and pass it through a 100-mesh sieve for later use;

[0012] (2) Weigh a certain amount of formula smoke powder particles, based on the mass of the smoke powder, weigh 20% of the smoke agent, 4% of CMC, 4.5% of wood pulp fiber, and 550% of water, stir, mix evenly, and place on the workbench surface of the coating test machine;

[0013] (3) adjusting the gap between the blade and roller to 1.5 mm, setting the temperature to 80° C., baking for 15 to 20 min, adjusting the moisture content of the reconstituted tobacco leaves to 11.7%, sending the leaves to a shredder for shredding, controlling the shredded width to 0.9±0.1 mm, curling, and making filamentous reconstituted tobacco leaves KB;

[0014] (4) The filamentary reconstituted tobacco leaves KB were divided into three equal parts, one of which was sprayed with an equal amount of ethanol; two aroma base modules were weighed and dissolved in ethanol respectively, and then applied to the other two filamentary reconstituted tobacco leaves in the form of spray, thus obtaining functional characteristic reconstituted tobacco leaf samples A and B.

[0015] Preferably, in the above technical solution, in step (2), the proportion of glycerol in the smoke generating agent is 16%, and the proportion of propylene glycol is 4%.

[0016] Preferably, in the above technical solution, in step (2), 4.5% of the wood pulp fibers are absolutely dry.

[0017] Preferably, in the above technical scheme, in step (4), the aroma base module is a first aroma base module and a second aroma base module, the first aroma base module comprises the following components in parts by mass: 50-60% of the first formula essential oil, 10-15% of wolfberry extract, 10-15% of wild chrysanthemum extract, 5-15% of bayberry extract, and 15-20% of ethyl maltol; the second aroma base module comprises the following components in parts by mass: 50-60% of the second formula essential oil, 10-15% of astragalus extract, 10-15% of loquat leaf extract, and 15-20% of ethyl maltol.

[0018] Preferably, in the above technical scheme, in step (4), the first formula essential oil comprises the following components in parts by weight: 6 parts of Oroxylum indica, 5 parts of Salvia miltiorrhiza, 5 parts of Rubescens rubescens, 6 parts of Licorice, 6 parts of Mentha chinensis, and 6 parts of Belamcanda chinensis; the second formula essential oil comprises the following components in parts by weight: 6 parts of Sophora flavescens, 6 parts of Honeysuckle, 6 parts of Magnolia officinalis, 6 parts of Belamcanda chinensis, 6 parts of Rubescens rubescens, and 5 parts of Poria.

[0019] Preferably, in the above technical solution, in step (4), the amount of the formulated essential oil applied is 4.5% of the weight of the reconstituted shredded tobacco.

[0020] The invention discloses an application of a formula essential oil, an aroma-based module or a functional characteristic reconstituted tobacco leaf in preparing a product for treating chronic pharyngitis. The treatment includes prevention, treatment or relief.

[0021] The above technical solution of the present invention has the following beneficial effects:

[0022] The functional reconstituted tobacco prepared by the present invention realizes an organic combination of the aroma and functional advantages of the traditional Chinese medicine essential oil and the reconstituted tobacco development technology, which can not only give full play to the unique aroma of the traditional Chinese medicine essential oil and enhance the consumer experience, but also realize its unique advantages in preventing and curing diseases and meet the health needs of consumers. In addition, the present invention adopts the method of adding flavor to the filamentous reconstituted tobacco, which can flexibly modify or adjust the formula essential oil according to the actual needs of the cigarette formula, and can effectively broaden the functionality and applicability of the reconstituted tobacco and improve the development efficiency of the reconstituted tobacco. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 This is a graph showing the inhibitory effect of natural plant essential oils on cyclooxygenase-2.

[0025] Figure 2 These are laryngoscopic images of the pharynx of rats in the blank group and the model group.

[0026] Figure 3 This is a picture of the pharynx of rats with chronic pharyngitis model 7 days after administration.

[0027] Figure 4 It is a smoke environment testing device.

[0028] Figure 5 This is the change of rat pharynx after rat modeling and drug administration for 7 days. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] Example 1 Preparation of essential oils

[0032] (1) Screening of natural plants:

[0033] In combination with the "Chinese Pharmacopoeia", "Industry License List" and relevant industry regulations, Oroxylum indica, Sophora flavescens, Scutellaria baicalensis, Salvia miltiorrhiza, Belamcanda chinensis, Honeysuckle, Poria cocos, Magnolia officinalis, Platycodon grandiflorum, Licorice, Menthus fragrans and Rubescens rubescens were selected for inclusion in the alternative library.

[0034] (2) Preparation of natural plant essential oils:

[0035] Natural plants are dried naturally, crushed, and placed in CO 2 The extraction was carried out in a supercritical extraction device and set aside. The specific extraction process conditions are shown in Table 1.

[0036] Table 1 Preparation technology and yield of natural plant essential oils

[0037]

[0038] (3) Evaluation of the inhibition of cyclooxygenase-2 (COX-2) by natural plant essential oils:

[0039] There are usually two types of cyclooxygenase (COX), one is constitutively expressed COX-1, and the other is inducibly expressed COX-2. The activity of COX-2 in normal tissue cells is extremely low. When cells are stimulated by inflammation, its expression level in inflammatory cells can increase to 10-80 times the normal level, thereby participating in a variety of pathological and physiological processes, leading to inflammatory reactions and tissue damage. Therefore, finding or preparing natural active ingredients and drugs that have a significant inhibitory effect on COX-2 has a great and far-reaching significance for human health.

[0040] The inhibitory activity of COX-2 of the prepared natural plant essential oils was determined and screened using the Bio-Sky S0168 cyclooxygenase-2 (COX-2) inhibitor screening kit, and the natural plant essential oils with reliable inhibition rates were plotted, such as Figure 1 .

[0041] from Figure 1 It can be seen that Oroxylum indica, Sophora flavescens, Salvia miltiorrhiza, Belamcanda chinensis, Lonicera japonica, Poria cocos, Magnolia officinalis, Licorice, and Rubescens rubescens all have good inhibitory effects on cyclooxygenase-2, while Platycodon grandiflorum, Mentha arvense, and Astragalus membranaceus have no statistical significance due to large repeated measurement errors.

[0042] Inhibitory effect of compound essential oils on cyclooxygenase-2 (COX-2): Based on the previous study on "the inhibitory effect of single essential oils on cyclooxygenase-2", the inhibitory effect of essential oils on COX-2 after being matched in equal proportions was further investigated. From the 9 essential oils screened, Danshen essential oil and Rubescens essential oil (single drug inhibition rate>60%) were removed, and the remaining 7 essential oils were subjected to synergistic inhibition experiments and numbered as follows: A-Oroxylum indica, B-Sophora flavescens, C-Glycyrrhiza uralensis, D-Lonicera japonica, E-Belamcanda chinensis, F-Poria cocos, G-Magnolia officinalis.

[0043] By using the method of permutation and combination, the above 7 essential oils were combined in equal proportions, and the synergistic inhibition experiment on COX-2 was carried out. A total of 21 results were obtained, namely: AB (29.27%), AC (62.69%), AD (40.93%), AE (58.31%), AF (49.33%), BD (37.58%), BE (70.42%), BF (49.16%), BG (83.98%), CD (35.13%), CE (43.99%), CF (43.42%), DE (40.00%), DF (34.62%), DG (87.95%), EF (52.23%), CG, AG, BC, EG, FG were abnormal data in this experiment and were not analyzed. Analysis of the effective experimental results showed that the combination of AC, AE, BE, BG, and DG had a higher synergistic inhibition rate.

[0044] Preparation of formula essential oils: Based on the 5 compound essential oils with higher synergistic inhibition rates and 2 single essential oils with higher inhibition rates obtained in the previous method, the formula was prepared in combination with the theory of Chinese medicine compatibility to prepare 2 formula essential oils:

[0045] The first formula essential oil (formula essential oil 1): 6mL of Oroxylum indica, 5mL of Salvia miltiorrhiza, 5mL of Rabdosia rubescens, 6mL of Licorice, 6mL of Mentha arvense, and 6mL of Belamcanda chinensis.

[0046] The second formula essential oil (formula essential oil 2): ​​Sophora flavescens 6mL, Lonicera japonica 6mL, Magnolia officinalis 6mL, Belamcanda chinensis 6mL, Rabdosia rubescens 6mL, and Poria cocos 5mL.

[0047] Example 2 Establishment of chronic pharyngitis model

[0048] Experimental animal selection and grouping: SPF male SD rats, weighing 180-220 g, aged 10 weeks, were purchased from Shandong Jinan Pengyue Experimental Animal Breeding Co., Ltd. There were 12 SD rats in total, 4 in the blank group and 8 in the formula essential oil group, 4 in each cage.

[0049] Establishment of chronic pharyngitis model: The formula essential oil group was given the prepared 2.5% ammonia water, and the modeling drug was sprayed into the rat pharynx using a laryngeal applicator, 2 times / day (9:00AM and 16:00PM, 8h interval), 3 presses / time, for 4 weeks; the blank group was given the same amount of pure water at the same time as a normal control to establish a chronic pharyngitis model. The evaluation indicators included rat behavioral observation, rat pharyngeal laryngoscope appearance characteristics, and rat hematological index detection-blood routine.

[0050] (1) Behavioral observation of rats

[0051] Blank group: The body shape was stable, the mental state was normal, there was no obvious fluctuation in eating and drinking, there was no inflammatory manifestation, and there was no abnormal death.

[0052] Model group: One week after modeling, the rats scratched their mouths frequently, oral secretions increased, the frequency of drinking water increased, and the amount of food intake decreased; three weeks after modeling, the rats were listless, their fur was rough and dark and fell off severely, their food and water intake decreased, their urine output increased, and their mouths and tongues became ulcerated.

[0053] (2) Laryngoscopic features of the rat pharynx

[0054] like Figure 2 As shown: The pharyngeal tissue of rats in the blank group was light red, the surface was moist and shiny, there was no excessive secretion, and there was no pathological phenomenon such as congestion, swelling, and ulceration. The pharyngeal tissue of rats in the model group was dark red and dark, the secretion increased, and a large area of ​​acute congestion, swelling, and ulceration was observed, indicating that this method can cause chronic pharyngitis in rats.

[0055] (3) Blood parameters of rats

[0056] Table 1 Hematological indicators of rats

[0057]

[0058] Table 1 shows the results of blood routine test of rats: compared with the rats in the blank group, the number of white blood cells, lymphocytes and neutrophils in the model group rats increased significantly, the proportion of lymphocytes decreased, and the proportion of neutrophils increased. This indicates that there is inflammatory infection in the rats in the model group, and this method can cause chronic pharyngitis in rats.

[0059] Example 3 Verification of the preventive and therapeutic effect of chronic pharyngitis

[0060] Experimental method: All experimental rats in the model group were smeared with 20 μL of essential oil per nose every day (model group 1 was smeared with formula essential oil 1, and model group 2 was smeared with formula essential oil 2) for 7 consecutive days.

[0061] (1) Behavioral observation

[0062] After 7 days of continuous administration, the rats' diet and water intake were normal, their hair was shiny, shedding was reduced, and their activity was normal.

[0063] (2) Laryngoscopic features of the rat pharynx

[0064] The color change of rat pharynx was observed by visual laryngoscope. Figure 3 .

[0065] Depend on Figure 3 It can be seen that after 7 days of intervention with formulated essential oils on chronic pharyngitis in rats, the results showed that the visible secretions in the rats' pharynx were significantly reduced, the redness and swelling subsided, and the vasodilation in the larynx also improved to varying degrees.

[0066] (3) Blood parameters of rats

[0067] Table 2 White blood cell (WBC) counts in rats ( n=12)

[0068]

[0069] Note: Comparison between model group and normal control group: * P<0.05, ** P < 0.01;

[0070] The results of the rat blood routine test showed that compared with the blank control group, the white blood cell counts of the model group animals were all increased, indicating that the rat chronic pharyngitis model was successful after modeling, with inflammatory cell infiltration. Compared with the control group, the white blood cell counts of each medication group returned to normal, as shown in Table 2, indicating that the formula essential oil has a significant effect of clearing the throat, clearing the lungs, and improving respiratory discomfort symptoms.

[0071] Example 4 Preparation of Fragrant Module

[0072] The first aroma base module (aroma base module 1): formula essential oil 1 (mass percentage) 50-60%, wolfberry extract 10-15%, wild chrysanthemum extract 10-15%, bayberry extract 5-15%, ethyl maltol 15-20%.

[0073] The second aroma base module (aroma base module 2): formula essential oil 2 (mass percentage) 50-60%, astragalus extract 10-15%, loquat leaf extract 10-15%, ethyl maltol 15-20%.

[0074] Example 5 Preparation of functional characteristic reconstituted tobacco leaves

[0075] (1) Producing reconstituted tobacco using the thick pulp production process:

[0076] Place the tobacco powder raw material in a vibrating sieving machine and pass it through a 100-mesh sieve for later use;

[0077] A certain amount of formula tobacco powder particles are weighed, and based on the mass of the tobacco powder, a smoke agent with a mass fraction of 20% (including 16% glycerol and 4% propylene glycol), 4% CMC, 4.5% wood pulp fiber (absolutely dry), and 550% water are weighed. After the above materials are fully stirred and evenly mixed, the slurry is placed on the workbench surface of a coating test machine, and the gap between the knife rollers is adjusted to 1.5 mm to make it evenly dispersed. The temperature is set to 80° C. and baked for 15 to 20 minutes. After the moisture content of the reconstituted tobacco leaves is adjusted to 11.7%, the leaves are sent to a shredder for shredding, and the shredded width is controlled to be 0.9±0.1 mm. The leaves are curled to make reconstituted tobacco leaves KB.

[0078] The KB filamentous reconstituted tobacco leaves were divided into three equal parts, one of which was sprayed with an equal amount of ethanol; two aroma base modules were weighed and dissolved in ethanol respectively, and then applied to the other two filamentous reconstituted tobacco leaves in the form of spray, namely, functional characteristic reconstituted tobacco leaf samples A (including the first aroma base module) and B (including the second aroma base module), wherein the application amount of the formula essential oil was 4.5% of the weight of the reconstituted tobacco shreds.

[0079] Sensory evaluation of functional reconstituted tobacco:

[0080] The filamentous reconstituted tobacco leaves prepared above were manually rolled into heated cigarettes. The prepared sample cigarettes were subjected to sensory evaluation according to the "Sensory Evaluation Requirements for Heated Cigarettes" of the tobacco industry, and the results are shown in Table 3.

[0081] Table 3 Sensory quality evaluation of functional reconstituted tobacco leaves

[0082]

[0083] As can be seen from Table 3, compared with the blank, the reconstituted tobacco prepared by the present invention has better smoke freshness, fuller smoke concentration, moderate strength, clean aftertaste, reduced irritation, slightly improved uniformity, and has good application prospects.

[0084] Example 6 Verification of the effect of functional reconstituted tobacco leaves on the prevention and treatment of chronic pharyngitis

[0085] Experimental animal selection and grouping: SPF male SD rats, weighing 180-220 g, aged 10 weeks, were purchased from Shandong Jinan Pengyue Experimental Animal Breeding Co., Ltd. There were 12 SD rats in total, 4 in the blank group and 8 in the fragrant module group, 4 in each frame, and they were raised in 2 frames.

[0086] Establishment of chronic pharyngitis model: 8 rats in the fragrance-based module group were given 2.5% ammonia water sprayed into the pharynx of the rats using a laryngeal applicator, twice a day (9:00 AM and 16:00 PM, 8 hours apart), 3 presses / time, for 4 weeks; the blank group was given the same amount of pure water at the same time as a normal control.

[0087] Verification of the effect of functional reconstituted tobacco leaves in preventing and treating chronic pharyngitis:

[0088] Experimental method:

[0089] Use a flue gas environment test device such as Figure 4 As shown, it includes: a test box 1, ventilation holes 2, a mesh feeding table 3, a feeding port 4 (for rats to enter and exit and for food to be fed), a heating box 5, a control switch 6, a touch-type temperature and humidity control screen 7, and a heating tank 8.

[0090] The test box 1 is a transparent cube or rectangular device, with ventilation holes 2 on the side of the test box 1, a delivery port 4 on the top of the test box 1, a mesh feeding table 3 in the middle of the inner side of the test box 1, a heating box 5 at the bottom end of the test box 1, a control switch 6 and a touch-type temperature and humidity control screen 7 in front of the heating box 5, and a heating tank 8 at the top of the heating box 5.

[0091] The test box 1 of the smoke environment test device is transparent and made of acrylic material. The test rats are placed on the mesh feeding table 3 through the delivery port 4, and water and food are delivered to the rats through the delivery port 4 at regular intervals every day. At a fixed time every day, 1.55g of functional reconstituted tobacco leaves (the weight of reconstituted tobacco leaves in each cigarette cartridge is about 0.31g) are placed in the heating tank 8, and then the control switch 6 is turned on, and the heating program is set through the touch-type temperature and humidity control screen 7. Then the heating tank 8 is quickly heated from room temperature to 280°C at a rate of 10°C / s, and then the temperature is reduced to 250°C, maintained for 200s, and then slowly reduced to room temperature, once a day for 7 consecutive days.

[0092] (1) Behavioral observation

[0093] After the test rats lived in the created smoke environment for 7 consecutive days, their diet, mental state, and activity level gradually recovered from frequent scratching of the mouth, increased oral secretions, increased drinking frequency, and decreased food intake to normal.

[0094] (2) Observe the color change of rat pharynx by visual laryngoscope. Figure 5 .

[0095] Depend on Figure 5It can be seen that after modeling, the pharyngeal tissue was dark red and dark, the secretions increased, and large areas of acute congestion and swelling were observed. After 7 days of intervention in chronic pharyngitis in rats with the administration of reconstituted tobacco smoke, it was found that the visible secretions in the pharynx of the rats were significantly reduced, the redness and swelling subsided, and the laryngeal vasodilation also improved to varying degrees.

[0096] (3) Blood parameters of rats

[0097] Table 4 Hematological indicators of rats

[0098]

[0099] Note: Comparison between the Xiangji module group and the normal control group after modeling: * P<0.05, ** P<0.01; after drug administration and after modeling: * P<0.05, ** P<0.01.

[0100] The results of the rat blood routine test showed that compared with the normal control group, the white blood cell counts of the model group animals were increased to varying degrees, indicating that after modeling, the rat larynx was invaded by inflammatory cells. Compared with the modeling group, the levels of major cellular inflammatory factors in the serum of the rats decreased by more than 40% compared with the model group, as shown in Table 4, indicating that the reconstituted tobacco leaves prepared by the present invention have a significant effect of preventing chronic pharyngitis and improving respiratory discomfort symptoms.

[0101] 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 formula essential oil, characterized in that, The formula essential oil is a first formula essential oil or a second formula essential oil. The first formula essential oil includes the following components in parts by weight: 6 parts of Oroxylum indica, 5 parts of Salvia miltiorrhiza, 5 parts of Rubescens rubescens, 6 parts of Licorice, 6 parts of Mentha, and 6 parts of Belamcanda chinensis; the second formula essential oil includes the following components in parts by weight: 6 parts of Sophora flavescens, 6 parts of Honeysuckle, 6 parts of Magnolia officinalis, 6 parts of Belamcanda chinensis, 6 parts of Rubescens rubescens, and 5 parts of Poria.

2. A fragrance-based module, characterized in that: The aroma base module is a first aroma base module or a second aroma base module, the first aroma base module comprises the following components in mass: 50-60% of the first formula essential oil according to claim 1, 10-15% of wolfberry extract, 10-15% of wild chrysanthemum extract, 5-15% of bayberry extract, and 15-20% of ethyl maltol; the second aroma base module comprises the following components in mass: 50-60% of the second formula essential oil according to claim 1, 10-15% of astragalus extract, 10-15% of loquat leaf extract, and 15-20% of ethyl maltol.

3. Application of the formula essential oil according to claim 1 or the aroma-based module according to claim 2 in preparing functional characteristic reconstituted tobacco.

4. A method for preparing functional characteristic reconstituted tobacco, characterized in that: The following steps are involved: (1) Place the tobacco powder raw material in a vibrating sieving machine and pass it through a 100-mesh sieve for later use; (2) Weigh a certain amount of formula smoke powder particles, based on the mass of the smoke powder, weigh 20% of the smoke agent, 4% of CMC, 4.5% of wood pulp fiber, and 550% of water, stir, mix evenly, and place on the workbench surface of the coating test machine; (3) adjusting the gap between the blade and roller to 1.5 mm, setting the temperature to 80° C., baking for 15 to 20 min, adjusting the moisture content of the reconstituted tobacco leaves to 11.7%, sending the leaves to a shredder for shredding, controlling the shredded width to 0.9±0.1 mm, curling, and making filamentous reconstituted tobacco leaves KB; (4) The filamentary reconstituted tobacco leaves KB were divided into three equal parts, one of which was sprayed with an equal amount of ethanol; two aroma base modules were weighed and dissolved in ethanol respectively, and then applied to the other two filamentary reconstituted tobacco leaves in the form of spray, thus obtaining functional characteristic reconstituted tobacco leaf samples A and B.

5. The method for preparing functional characteristic reconstituted tobacco according to claim 4, characterized in that: In step (2), the proportion of glycerol in the smoke generating agent is 16%, and the proportion of propylene glycol is 4%.

6. The method for preparing functional characteristic reconstituted tobacco according to claim 4, characterized in that: In step (2), 4.5% of the wood pulp fibers are absolutely dry.

7. The method for preparing functional characteristic reconstituted tobacco according to claim 4, characterized in that: In step (4), the aroma base module is a first aroma base module and a second aroma base module, the first aroma base module includes the following components by mass: 50-60% of the first formula essential oil, 10-15% of wolfberry extract, 10-15% of wild chrysanthemum extract, 5-15% of bayberry extract, and 15-20% of ethyl maltol; the second aroma base module includes the following components by mass: 50-60% of the second formula essential oil, 10-15% of astragalus extract, 10-15% of loquat leaf extract, and 15-20% of ethyl maltol.

8. The method for preparing functional characteristic reconstituted tobacco according to claim 7, characterized in that: In step (4), the first formula essential oil includes the following components in weight: 6 parts of Oroxylum indica, 5 parts of Salvia miltiorrhiza, 5 parts of Rubescens rubescens, 6 parts of Licorice, 6 parts of Mentha, and 6 parts of Belamcanda chinensis; the second formula essential oil includes the following components in weight: 6 parts of Sophora flavescens, 6 parts of Honeysuckle, 6 parts of Magnolia officinalis, 6 parts of Belamcanda chinensis, 6 parts of Rubescens rubescens, and 5 parts of Poria.

9. The method for preparing functional characteristic reconstituted tobacco according to claim 8, characterized in that: In step (4), the amount of the formulated essential oil applied is 4.5% of the weight of the reconstituted tobacco.

10. Use of the formula essential oil according to claim 1, the aroma-based module according to claim 2, or the functional characteristic reconstituted tobacco leaves prepared according to the preparation method according to any one of claims 4 to 9 in preparing products for treating chronic pharyngitis.

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