35results about How to "Reduce mist" patented technology

The invention discloses pseudomonas TB392 and application thereof in degradation of pectin and generation of flavor substances in tobacco leaves, and belongs to the technical field of biology. The strain is preserved in the China General Microbiological Culture Collection Center on October 16, 2024, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.32230. The strain can produce pectinase at high yield, has the capability of reducing nicotine, can degrade macromolecular compounds such as carotenoid, starch, pectin, cellulose and the like in tobacco leaves, and can remarkably improve the content of flavor substances in the tobacco leaves. After the strain or the prepared microbial agent is applied to tobacco leaves, the quality of the tobacco leaves can be improved, and the use value of the tobacco leaves is improved.

The invention relates to the technical field of cigarette manufacturing, and discloses cigarette filter stick forming paper containing bamboo ultrafine powder and a preparation method thereof, the cigarette filter stick forming paper comprises the following raw materials by mass: 40-60 parts of wood pulp cellulose, 0-35 parts of tobacco stem ultrafine powder, 10-30 parts of bamboo ultrafine powder, 20-30 parts of a modified calcium carbonate filler, 12-16 parts of essence and 1-6 parts of a cigarette paper additive; the modified calcium carbonate is obtained by compounding calcium carbonate with zeolite powder and then modifying with glyceryl triacetate. By means of the method, smoke can have the fresh and sweet fragrance of bamboos, the smoke is enriched, the smoke state and the fragrance style are improved, offensive odor and irritation of tobaccos are reduced, and the smoking quality of cigarettes is improved.

The invention discloses bacillus siamensis G12, a microbial inoculum, a preparation method and application of the bacillus siamensis G12 in improvement of tobacco leaf quality, and belongs to the technical field of bioengineering. The bacillus siamensis provided by the invention can inhibit mould in tobacco leaves, can degrade nicotine, and can well survive and metabolize in a tobacco leaf environment; a very good degradation effect is achieved on macromolecular compounds including protein, pectin, cellulose, lignin and starch which influence the quality, combustibility, health and safety of the tobacco leaves; the tobacco leaf smoking quality can be effectively improved, tobacco leaf fermentation is accelerated, the tobacco leaf fermentation time is saved, and the usability of tobacco leaves, especially low-quality tobacco leaves, is greatly improved.

The invention discloses paenibacillus arborescens and application thereof, and belongs to the technical field of microorganisms. The classification name of the paenibacillus arborescens is paenibacillus arborescens yhs-1, the paenibacillus arborescens yhs-1 is preserved in the China Center for Type Culture Collection (CCTCC), the preservation date is October 25, 2023, and the preservation number is CCTCC NO: M 20232033. The bacterial strain is screened from tobacco leaf and fruit and vegetable samples, has better degradation capacity on xanthophyll, can degrade xanthophyll in tobacco leaves and generate 18 aromatic substances when being applied to tobacco leaf fermentation, so that the tobacco leaves are sufficient in aroma aftertaste and free of other offensive odor and pungent smell; when the fermented tobacco leaf product is applied to cigarettes, the smoking quality of the cigarettes can be remarkably improved.

The preparation method comprises the following steps: a, carrying out enzymolysis on a fenugreek extract to obtain fenugreek extract enzymatic hydrolysate; b, the fenugreek extract enzymatic hydrolysate and amino acid are subjected to a Maillard reaction, and a Maillard reaction product is obtained; and c, filtering the Maillard reaction product, collecting filtrate, evaporating to remove the solvent under reduced pressure, and dissolving with a propylene glycol solution to obtain the perfume. The fenugreek extract is used as a sugar source, amino acid is added as a nitrogen source, the Maillard reaction is carried out, the prepared Maillard reaction product is used for cigarette flavoring and charging, cigarette fragrance can be enriched, smoke can be fine and smooth, offensive odor of cigarettes can be reduced, irritation can be reduced, and the overall smoking quality of the cigarettes can be improved.

The present application belongs to the technical field of tobacco, and in particular, relates to a method and device for improving the comfort of aged tobacco. The method for improving the comfort of aged tobacco of the present application comprises: mixing a formic acid-ethanol aqueous solution with tobacco leaves having a water content of 10% to 15% for acidolysis reaction to obtain acidolysis-treated tobacco leaves; subjecting the acidolysis-treated tobacco leaves to ultraviolet radiation treatment to obtain tobacco leaves treated by acidolysis and ultraviolet radiation of a formic acid-ethanol aqueous solution; and balancing the moisture content of the synergistically treated tobacco leaves. The present application provides a method and device for improving the comfort of aged tobacco, which can appropriately reduce the strength and concentration by reducing the starch, protein and free nicotine content while maintaining the flavor style of tobacco leaves unchanged, and significantly reduce the irritation to the oral cavity, throat and nasal cavity, thereby quickly and significantly improving the comfort of tobacco leaf smoking, and effectively solving the technical defects of the existing methods for improving the comfort of aged tobacco, such as long processing time, treating the symptoms but not the root cause, and unknown and complex components of combustion products.

The present invention belongs to the field of papermaking reconstituted tobacco leaves, and specifically relates to a method for swelling tobacco stems, comprising: washing raw tobacco stems, conveying the washed tobacco stems through a screw conveyor, and the temperature in the screw conveyor is 60°C to 80°C and the relative humidity is 65% to 90%; steaming the obtained tobacco stems through a spiral stem steamer, the temperature of the steamed stems is 70°C to 120°C, and the time is 5-30 seconds; steaming the obtained tobacco stems through a tunnel-type stem steamer, the temperature of the steamed stems is 90°C to 120°C, and the time is 5-30 seconds; soaking the obtained tobacco stems in water at 60°C to 70°C, and separating the tobacco stems. The present invention also relates to a method for preparing reconstituted tobacco leaves, reconstituted tobacco leaves and applications, and tobacco products. The method of the present invention improves the swelling effect of tobacco stems, reduces the content of hot water solubles in substrates, and improves the tobacco stem extraction rate, substrate absorbency, product yield and sensory quality.

This invention discloses a respiratory protective face shield, comprising a helmet and a face shield that allows visible light to pass through. The face shield is located on the front of the helmet and is movably connected to the helmet, allowing it to cover the wearer's face. A transparent electrically heated film is provided in the transparent area of ​​the face shield that allows visible light to pass through. The helmet is equipped with a power supply component for providing electrical power. The electrodes of the electrically heated film are electrically connected to the power supply component. An air inlet is located on the rear of the helmet for connecting to an air supply device. An air passage is provided inside the helmet, with one end connected to the air inlet and the other end extending to the front of the helmet and communicating with the space between the face shield and the wearer's face. This invention provides a respiratory protective face shield that can reduce water vapor on the inner surface of the face shield during wear, ensuring a clear field of vision for the wearer.

The application discloses a preparation process of reconstituted tobacco leaf, which comprises the following steps: subjecting tobacco leaf raw materials to fresh air hot air treatment, and storing the tobacco leaf raw materials to obtain primary tobacco leaves with a water content of 15-25%; subjecting the primary tobacco leaves to hot air drying to obtain secondary tobacco leaves, wherein the hot air drying time is 10-20 min; and crushing the secondary tobacco leaves and preparing reconstituted tobacco leaves through a thick slurry method. The preparation process of the reconstituted tobacco leaf can reduce peculiar smell and irritancy, improve tobacco baking original aroma, improve sensory comfort, and improve sensory quality through the steps of multi-stage fresh air hot air drying, high-intensity drying and storage to ensure the water content.

The application discloses a tobacco extract preparation method, which comprises the following steps: (1) one-time feeding: preparing a carbonated salt-amino acid mixed aqueous solution, uniformly applying the mixed aqueous solution to tobacco raw materials, and standing at room temperature; (2) drying: performing heating treatment on the tobacco raw materials after feeding, and drying; (3) secondary feeding: uniformly applying a polyol to the dried tobacco raw materials; (4) extrusion: performing extrusion and puffing treatment on the tobacco raw materials after feeding, and obtaining treated tobacco raw materials; and (5) extraction: performing extraction and separation on the treated tobacco raw materials, and obtaining a tobacco extract. The carbonated salt-amino acid solution can improve feeding uniformity, improve the pH of the system to reduce nicotine, drying is beneficial to subsequent reactions, the polyol improves material fluidity and prevents extrusion die blockage, extrusion and puffing high-temperature and high-pressure degrade macromolecules, and the tobacco aroma is improved. The extract can be used for heat cigarettes, the aroma is richer, and the odor and irritability are obviously reduced.

The invention discloses a method for fermenting cigar core tobacco leaves by adding an exogenous enzyme preparation. The method comprises the following steps: uniformly spraying distilled water to the tobacco leaves for moisture regaining; placing the dampened tobacco leaves in a constant-temperature and constant-humidity box, and balancing moisture for 24 hours under the conditions that the temperature is 25 DEG C and the humidity is 80% until the moisture content of the tobacco leaves is 22%; diluting the exogenous enzyme preparation to a required concentration by using distilled water to prepare an exogenous enzyme solution; uniformly spraying an exogenous enzyme preparation solution on the surfaces of the tobacco leaves subjected to moisture balancing, and balancing moisture for 24 hours in a constant-temperature and constant-humidity box under the conditions that the moisture regaining moisture content of the tobacco leaves is 26%, the temperature is 25 DEG C and the humidity is 80%; and putting the tobacco leaves subjected to moisture balance into a constant-temperature and constant-humidity box under the conditions that the temperature is 42 DEG C and the humidity is 80%, and fermenting for 7 days. According to the fermented tobacco leaves treated by the exogenous enzyme preparation, the quality characteristics of the tobacco leaves are improved, the aroma is richer, the aroma amount is increased, the aroma permeability is better, and offensive odor and irritation are reduced; the method plays an important role in improving the industrial availability of cigar core tobacco leaves.

The invention relates to the technical field of cigarette flavor preparation, and discloses a cigarette flavor additive and a preparation method thereof, and the cigarette flavor additive comprises a blueberry extract, a flavor enhancer, nerol, an alcohol flavor, ethyl benzoate, 4-hydroxybenzoic acid and ethanol. According to the invention, the blueberry extract is used as a perfume and the fragrance contained in the blueberry extract reduces the irritation, the blueberry extract is used for perfuming the cigarette, so that the cigarette fragrance can be improved, the effects of smoothing smoke, reducing offensive odor, improving aftertaste and the like are achieved, and the adopted flavor enhancer is thermally cracked in the cigarette burning and smoking process, so that the fragrance of the cigarette is improved. Organic acid components with unique fragrance are released, so that the purpose of effectively enhancing the flavor of cigarettes can be achieved, and the effects of improving the fineness and softness of smoke, increasing the thickness of the smoke and reducing offensive odor and irritation are achieved.

The invention discloses a composite biological inoculant for promoting alcoholization of crude tobacco, which is prepared by the following steps: by taking bacillus licheniformis CICC 10037, candida utilis CICC 1769 and thermolysis thermophila ATCC 27730 as core functional strains, respectively activating and enlarging culture, then carrying out thallus resuspension by using a stable protective agent solution consisting of trehalose, sodium glutamate and sodium carboxymethyl cellulose, and finally, carrying out fermentation, so as to obtain the composite biological inoculant for promoting alcoholization of crude tobacco. The three strains are mixed according to a specific volume ratio to prepare a compound bacterium suspension, and finally the compound bacterium suspension is uniformly adsorbed to a sterilized homologous tobacco powder carrier, so that macromolecular substances such as starch, protein and cellulose in tobacco leaves can be efficiently degraded through the synergistic effect of the three strains, and the variety and content of aroma components are remarkably increased; the method effectively reduces irritant substances such as ammonia and acetaldehyde and harmful ingredients such as nitrosamine specific to tobacco, reduces offensive odor and irritation, improves taste, ensures uniformity and stability of the alcoholization effect, and achieves multiple purposes of quality improvement, aroma enhancement, harm reduction and efficiency improvement in the crude tobacco alcoholization process.

The invention belongs to the technical field of tobacco flavors, and particularly relates to a preparation process and application of a fresh and sweet herb flavor prominent Maillard reaction flavor. The preparation method comprises the following steps: carrying out heating reflux extraction on fragments of tobacco leaves produced in Yunnan and fragments of lysimachia foenum-graecum hance to obtain an extract, mixing the extract, distilled water and compound amino acid, heating to obtain a Maillard reaction spice extract, carrying out supercritical carbon dioxide extraction on the Maillard reaction spice extract, combining extracts of two separation kettles, adding ethanol for dissolving, and carrying out vacuum drying to obtain the Maillard reaction spice. And freezing and separating the upper-layer ethanol solution to obtain the tobacco flavor with prominent fresh and sweet herb fragrance. Compared with independent lysimachia foenum-graecum hance absolute oil, Yunnan tobacco absolute oil and the tobacco flavor prepared by blending the lysimachia foenum-graecum hance absolute oil and the Yunnan tobacco absolute oil, the tobacco flavor prepared by the invention can better improve the harmony, richness, aroma quality and taste of smoke, reduce irritation and reduce offensive odor.

The invention discloses a preparation method of reconstituted tobacco. The preparation method comprises the following steps: (1) preparing tobacco raw materials; (2) sterilizing; (3) fermenting an aspergillus niger seed solution; (4) separating, and pulping the solid part; fermenting the liquid part by using Wickerhamomyces anomalus; (5) preparing tobacco paste; and (6) preparing the reconstituted tobacco. The invention further discloses the reconstituted tobacco. The preparation method provided by the invention effectively solves the problem of improving the quality of the paper-making reconstituted tobacco.

The invention belongs to the technical field of tobacco flavor preparation, and discloses a method for preparing tobacco flavor based on polysaccharide Maillard reaction and application of the tobacco flavor. The method comprises the following steps: dissolving amino acid and polysaccharide in a solvent according to a certain molar ratio to obtain a reaction material; putting the reaction materials into a reaction kettle, and carrying out Maillard reaction under a closed condition; and after the reaction is finished, rapidly cooling the reaction kettle to room temperature to obtain a Maillard reaction product. In the reaction process, polysaccharide is cracked into various reducing sugars step by step and is subjected to Maillard reaction with amino acid, so that the problems that monosaccharide participates in the Maillard reaction, the aroma is single, and the reaction is violent and difficult to control are effectively solved. When the tobacco flavor is applied to cigarettes, the irritation of smoke can be remarkably reduced, offensive odor can be covered, meanwhile, the smoke is softened, the aftertaste is improved, the smoke concentration is increased, and the baking fragrance and the sweet aftertaste are increased. The method is low in cost, simple in equipment and convenient to operate, can be put into production without modifying existing production equipment, and has a good industrial application prospect.

The invention discloses a differential temperature circulation type stacking fermentation method for cigar tobacco leaves, which effectively improves the maturity of the cigar tobacco leaves by controlling the temperature and humidity of different stages, and reduces the miscellaneous gas and the loss of aroma substances. According to the method, by accurately regulating and controlling the fermentation environment, the specific aroma of the cigar tobacco leaves is successfully reserved, and the dual purposes of aroma enhancement and impurity removal are achieved. The fermentation method is not influenced by natural conditions such as temperature fluctuation and humidity change, so that the stability of the fermentation process and the consistency of results are ensured.

The present invention discloses a vehicle window defogger device based on the water vapor liquefaction principle, comprising a vehicle door, a vehicle window body is arranged on the side wall of the vehicle door, a permanent magnet is embedded in the side wall of the vehicle door, two symmetrically distributed slide grooves are arranged on the side wall of the vehicle door, a slide plate is slidably connected to the side wall of the slide groove, an electromagnet is embedded in the side wall of the slide plate, the S pole of the electromagnet is opposite to the S pole of the permanent magnet, a first electric contact is arranged on the side wall of the vehicle door, a second electric contact is arranged on the side wall of the vehicle door, a placement groove is opened on the side wall of the vehicle door, a sponge is placed on the bottom side wall of the placement groove, and the placement groove is located at the lower end of the vehicle window body. The present invention relates to the field of automobile equipment technology, and uses an electromagnet to generate magnetic force, and the permanent magnet and the electromagnet are opposite to each other with the same pole, so that when water mist is attached, the electromagnet is energized to push the water mist into the sponge.

The present invention provides a natural taro extract that can be used for flavoring and improving the quality of tobacco products by using taro as a raw material, extracting with an organic solvent or an aqueous solution of an organic solvent, and performing enzymatic hydrolysis and Maillard reaction on solid residues. The taro extract of the present invention has dual concentrations of aroma and flavor substances, and the total amount and quality of aroma substances are significantly improved. It can not only enrich the aroma of tobacco, but also reduce the irritation and impurities of tobacco products. It does not have the unnatural feeling of synthetic flavors, is an ideal substitute for existing synthetic flavors, can meet the demand for natural extracts in the tobacco industry, and expand the application range of taro agricultural products.

The invention discloses biological tobacco paste and a preparation method thereof. The biological tobacco paste is prepared by mixing and fermenting tobaccos with Klebsiella variicola HNYJ-3 with the preservation number of CGMCC (China General Microbiological Culture Collection Center) No.29654 (China General Microbiological Culture Collection Center) and Enterobacter sp. HNYJ-4 with the preservation number of CGMCC No.29655 (China General Microbiological Culture Collection Center) No.29655 (China General Microbiological Culture Collection Center No.29655 (China General Microbiological Culture Collection Center No.29655). According to the biological cigarette paste, through the specific microbial fermentation process, low-boiling-point aroma components in tobacco are remarkably increased, and the aroma quality and release efficiency of heated cigarettes are improved. The heated cigarette added with the biological cigarette paste shows better fragrance, harmony and aftertaste in sensory evaluation, offensive odor and irritation are reduced, and therefore the overall sensory experience of smoking is improved.

The invention provides a preparation method of a thymol-like tobacco raw material, which comprises the following steps: mixing flue-cured tobacco and burley tobacco, and sterilizing to obtain mixed tobacco leaves; soaking the mixed tobacco leaves in the first fermentation liquor, and performing sealed fermentation to obtain a tobacco leaf raw material A; performing high-temperature and high-pressure treatment on the raw material A, and airing to obtain a tobacco leaf raw material B; and spraying the second fermentation liquor to the raw material B, performing sealed fermentation, taking out, performing high-temperature and high-pressure inactivation and color fixation treatment again, and airing to obtain a tobacco leaf raw material C. According to the tobacco leaf raw material sample prepared through the specific fermentation and treatment mode, the smell intensity, the indoor note intensity and the note intensity during smoking are all improved, the note characteristics and the richness degree are remarkably improved, the combustion rate of the tobacco leaf raw material is remarkably improved, the smoke state is remarkably improved, offensive odor is remarkably reduced, and the tobacco leaf raw material has the good taste. The comfort and the taste are also obviously improved.

The invention belongs to the technical field of tobacco essence, and particularly relates to natural banana essence and application, and 10 g of essence formula comprises 4.0 g of banana extract, 0.02 g of 10% ethyl vanillin, 0.2 g of 10% isoamyl acetate, 0.1 g of 10% ethyl butyrate, 0.02 g of 10% ethyl isovalerate, 0.02 g of 10% ethyl acetate, 0.02 g of 10% ethyl acetoacetate, and the balance propylene glycol. The banana essence disclosed by the invention has strong banana-like fragrance and pure fragrance, and can enrich the flavor of cigarettes, reduce irritation and soften smoke when being added into cigarette tows.

The invention discloses a fragrance-producing golden ear strain and a use thereof. The golden ear strain or its fermentation liquid is used as a tobacco biological flavoring and added into cigarettes or cigars. The golden ear strain has good coordination with tobacco, can enrich the tobacco fragrance, reduce impurities and irritation, and increase the sweetness.

The invention discloses a cutting device for intelligent clock shell machining, and relates to the technical field of intelligent clock machining. A base is arranged below an equipment body, a loading bin is installed above the base, a water jet cutting device is arranged above the loading bin, and the water jet cutting device can move on the plane above the equipment body; a control assembly is arranged in the middle of the equipment body, a driving motor is arranged on one side of the control assembly, the output end of the driving motor is connected with a rotating shaft, the rotating shaft penetrates through the control assembly, and a charging hole is formed in the fixing plate; the driving motor drives the rotating shaft to rotate, the rotating shaft enables the fixing plate to rotate forwards and backwards through self rotation, and therefore double-face machining of a workpiece in the charging hole is achieved. The device solves the problems that when water jet cutting is conducted, the to-be-cut material is turned over manually, and consequently the to-be-cut material deviates from a preset moving path of the water jet cutting device; and redundant materials appear on the cut shell or the shell is scratched, so that the machining precision of the intelligent clock shell is reduced.

The present invention belongs to the field of tobacco products, and specifically relates to a method for preparing an extract of Tieguanyin cured product, comprising: performing monoclonal culture on yeast to obtain a culture with an OD600 of 0.1-3; applying the culture to Tieguanyin cured product, wherein the weight of the culture is 0.05%-2% of the weight of the Tieguanyin cured product, and fermenting at 25°C-55°C for 1-8 hours to obtain a fermentation product; performing steam distillation on the fermentation product, and collecting a distillate. The present invention also relates to an extract of Tieguanyin cured product, a tobacco leaf composition, and a cigarette. The content of various volatile aroma components in the extract of Tieguanyin cured product of the present invention is significantly increased, and the content of total volatile aroma components is significantly increased. Adding the extract of Tieguanyin cured product to cigarette shreds can significantly enhance the fragrance, floral, fruity, and sweet aroma characteristics of cigarettes, and improve the sensory quality of cigarettes when smoking.

The invention relates to the technical field of gene engineering and enzyme engineering, and discloses an alpha-galactosidase mutant and a preparation method and application thereof, the amino acid sequence of the mutant is a wild type alpha-galactosidase amino acid sequence shown as SEQ ID NO.1, and the amino acid sequence of the mutant is a wild type alpha-galactosidase amino acid sequence shown as SEQ ID NO.2. The mutant is obtained by mutation of amino acid residues of one or more of the following sites: the 74th site, the 145th site, the 432th site, the 560th site and the 615th site; wherein the serial number of the amino acid site corresponds to a sequence as shown in SEQ ID NO. 1. The enzyme is extracted from bacillus megatherium, enzyme modification is carried out by adopting single-point mutation and saturated mutation technologies and through a free energy virtual screening coupling internal topological cavity engineering modification strategy, two-point mutants K74R and L432V with significantly improved enzyme activity are obtained, the mutants can rapidly degrade anti-nutritional oligosaccharides and polysaccharides in plant raw materials, and the anti-nutritional oligosaccharides and polysaccharides in the plant raw materials can be rapidly degraded. The compound can be used as an aroma enhancing enzyme to efficiently hydrolyze glucosidic bonds and release precursor aroma substances, and is applied to tobacco processing, plant extraction and essence and perfume industries.

The invention relates to the field of tobaccos, in particular to a method for increasing the content of amino acid in a tobacco extracting solution, which comprises the following steps: mixing the tobacco extracting solution with a biological enzyme, fermenting, and inactivating to obtain a target tobacco extracting solution, the biological enzyme comprises multiple of phytoextraction enzyme, hemicellulase, fungal amylase, glucamylase, laccase or protease, the phytoextraction enzyme comprises cellulase, and the protease is acid protease or neutral protease. According to the method, the variety of amino acids in the tobacco extracting solution can be increased to 17, the content of the amino acids is increased by 20% or above, the process is simple, and operability is high.

The invention belongs to the technical field of tobacco flavor, and particularly relates to a preparation method and application of Maillard reaction flavor with outstanding glutinous rice flavor. Adding the glutinous rice bay leaves and the Yuyan tobacco leaves into rice wine to soak the leaves and stir-frying together to obtain a pretreated mixture of the glutinous rice bay leaves and the Yuyan tobacco leaves; the method comprises the following steps: respectively extracting a glutinous rice myrcia and tobacco leaf mixture with ethanol and water, and carrying out vacuum concentration on an extracting solution to obtain a crude extract; adding distilled water and amino acid into the crude extract, and carrying out Maillard reaction to obtain Maillard reaction feed liquid; and extracting the Maillard reaction material liquid by adopting supercritical carbon dioxide to obtain the tobacco flavor with harmonious sticky rice fragrance and roasted sweet fragrance smoke. Glutinous rice bay leaves and Yujin tobacco leaves are adopted as raw materials for the first time, feed liquid obtained after a Maillard reaction is loaded on silica gel, and then the tobacco flavor with the aroma characteristic is obtained through the supercritical extraction technology. When the spice is added into cigarettes, the cigarettes can be endowed with sticky rice fragrance and roasted sweet fragrance, the irritation of the cigarettes is reduced, and offensive odor is reduced.

This invention provides a centrifugal system and method for concentrating and removing impurities from tobacco alcohol extracts obtained through papermaking. The system includes a first feeding tank, a separator, and a second concentrated liquid feeding tank. The first feeding tank is equipped with a vertical stirrer, and has a concentrated liquid inlet, a reflux port, and a clean water inlet at the top, and an outlet at the bottom. The separator has an inlet and an outlet at the top. The second concentrated liquid feeding tank has a concentrated liquid inlet, a reflux port, and a clean water inlet at the top, and an outlet at the bottom. A concentrated liquid feeding pipeline is connected to the concentrated liquid inlet of the first feeding tank. The outlet of the first feeding tank is connected to both the reflux port of the first feeding tank and the inlet of the separator. The outlet of the separator is connected to the concentrated liquid inlet of the second concentrated liquid feeding tank. The outlet of the second concentrated liquid feeding tank is connected to both the reflux port of the second concentrated liquid feeding tank and a concentrator / evaporator. This system can effectively reduce the content of large-molecule insoluble matter in tobacco alcohol extracts and improve the quality of the extracts.

The invention relates to a preparation method of glutinous rice flavor type reconstituted cut stems and a product and application thereof, the preparation method comprises the following steps: taking blank cut stems as a base material, and fumigating the base material with steam obtained by a hydrothermal reaction of a glutinous rice grassland raw material to obtain steam fumigated cut stems; and then backfilling the tobacco compound liquid into the product, and drying to obtain the glutinous rice flavor type reconstituted cut stem, the tobacco composite liquid comprises the following components: a tobacco water extract, a tobacco alcohol extract and a flavor retention agent. According to the method, the steam with the sticky rice fragrance permeates into the blank cut stems in a fumigation mode, so that the prepared reconstituted cut stems have the soft, fine and sweet sticky rice fragrance, the fragrance is uniform, stimulation and offensive odor of the cut stems can be reduced, and the smoking quality is improved; furthermore, the cut stems are backfilled with the tobacco composite liquid containing the aroma retention agent, so that loss of aroma components in the drying process of the cut stems can be effectively prevented, the aroma can be retained for a longer time, and the problem that the aroma retention time is short is solved.