115results about How to "Soft smoke" patented technology

The invention discloses a method for preparing tobacco perfume by adopting organism fermented coffee, and relates to a preparation method of tobacco perfume, which belongs to the technical field of tobacco. The method comprises the following steps: (1) preparing tobacco leaf synthetic medium; (2) selecting the organism producing perfume; (3) performing liquid fermentation or solid fermentation to coffee by using selected burley tobacco leaf surface dominant bacteria and obtaining the fermented coffee tobacco perfume. The method has simple process and low cost, and the obtained coffee tobacco perfume can be directly used as the perfume of cigarettes. The coffee tobacco perfume has special fragrant characteristic of acid fragrance, thereby lowering the stimulation, richening the smoke gas hiding the mixed gas, leading the smoke gas to be soft and improving the mouthfeel when being added into the cigarettes.

The invention provides a cigarette provided with a cavity type vessel section and capable of being not burned after being heated. The cigarette includes a tobacco section, the cavity type vessel section, a near-lip section and an outer wrapping material, wherein the tobacco section, the cavity type vessel section and the near-lip section are coaxially and sequentially connected, and the outer wrapping material limits the tobacco section, the cavity type vessel section and the near-lip section. The tobacco section includes smoke formation materials, and the core material of the tobacco sectionis wrapped by aluminum foil composite forming paper or anti-oil forming paper. According to the cigarette provided with the cavity type vessel section and capable of being not burned after being heated, materials of the multiple-cavity type vessel section can make the cigarette possess good cooling performance, and when users have a smoke, no burning feeling exits. Moreover, through the arrangement of the multiple-cavity type vessel section, taste of the cigarette is rich and diversified, smoke is strong in fragrance, and the smoke is full. By arranging the aluminum foil composite forming paper on the tobacco section, the problem that the core materials absorb moisture in air and thus the outer wrapping material is polluted and deforms is avoided.

The present invention discloses rhodiola extracting process, which includes distilling rhodiola root in mixed solvent of water and alcohol, filtering and concentrating to obtain coarse extract; and adding bioactive enzyme into the coarse extract for enzymolysis. The present invention also discloses the application of rhodiola extract in cigarette, and adding rhodiola extract into cigarette can improve the quality of cigarette greatly.

The invention provides a method for preparing a fruit composite extract for fermented cigarettes, belongs to the technical field of tobacco and relates to a preparation method of a tobacco flavor. The method comprises the following steps of: 1) preparation of a culture medium, 2) inoculation, 3) fermentation and 4) separation to obtain the fruit composite extract for cigarettes. According to the invention, raisin and black brin rich in sugar are used as raw materials, and the fruit composite extract with fruit sweet aroma for fermented cigarette is produced through microorganism fermentation technology and has effects of enriching the cigarette aroma, increasing sweet aroma, moderating smoke, increasing return sweet feeling in mouth cavity, improving mouth feel and reducing residue. The method provided by the invention produces the tobacco flavor by the microorganism fermentation technology, and can obtain a way of economically and efficiently producing the natural tobacco flavor in an oriented manner.

The invention provides a preparation method of mint essential oil burst beads for cigarettes, belonging to the technical field of cigarette processing. The preparation method of burst beads comprisesthe following steps: performing high-speed homogenization and emulsification on mint essential oil, a calcium ion water solution and a surfactant to form an emulsion, directly and dropwisely adding emulsion drops into a sodium alginate water solution through an orifice by controlling the flow velocity of the emulsion at 1-5mL / minute by using a peristaltic pump, enabling the emulsion drops to stayin the sodium alginate solution for 2-40 minutes to obtain calcium alginate beads, taking out the beads, washing the beads with distilled water, putting the beads into an oxidizer water solution, performing soaking for 1-20 minutes, taking out the beads, washing the beads with distilled water, soaking the beads in a water-soluble polymer solution for 5-30 minutes, taking out the beads, washing thebeads with distilled water, and performing natural air drying, thereby preparing the mint essential oil burst beads for cigarettes, of which the grain size is 1-20mm. The mint essential oil burst beads for cigarettes are applied to cigarette filters to achieve the goal of improving the quality of cigarettes.

The invention relates to a composite additive which can reduce the carbon monoxide content of smoke gas, and relative application. Wherein, said composite additive comprises that tobacco extract, alkali metal salt, transition metal hydroxide, or metal hydroxide; the composite additive can be used in variable tobaccos as flue-cured tobacco, suncured tobacco leaf, oriental tobacco leaf, expansion pipe tobacco, etc. The inventive composite additive can be used in tobacco to reduce carbon monoxide content 1.5-3.0mg / n of smoke gas and reduce the tar content.

The Chinese herbal medicine additive for cigarette consists of moxa leaf, epimedium and mangosteen in the weight ratio of 0.2-30.0 to 0.5-25.0 to 0.5-30.0 as the main medicine materials as well as one of glossy ganoderma, ophiopogon root, astragalus root, acanthopanax bark, mint, sacandra glabra, Chuanxiong rhizome and honeysuckle as the supplementary material. The preparation process includes the first preparing extracted solution and the subsequent decompression concentration to form ointment. The Chinese herbal medicine additive for cigarette has reasonably combined Chinese medicinal materials with treating function and Chinese medicinal materials capable of invigorating kidney and raising human body's immunity, and can reduce the spicy stimulation of cigarette gas, reduce respiratory tract disease, improve taste of cigarette and reduce harm of smoking.

The invention belongs to the technical field of cigarette production, and particularly relates to a method for producing novel blended type cigarettes with flue-cured tobacco styles. The method comprises extracting Hubei Enshi burley tobacco and American burley tobacco with ethyl alcohol in a concentration of 30%; subjecting the extracted tobacco to high-temperature processing in a baking oven, and performing charging for spare; meanwhile, performing charging and perfuming on functional module cut tobaccos according to requirements of blended type cigarette styles; adding an appropriate number of the functional module cut tobaccos, tobacco flake cut tobaccos expanded cut stems and expanded cut tobaccos with cut flue-cured tobaccos serving as basic cut tobaccos, performing evaluation, analysis and screening repeatedly and determining a cigarette blending formula finally. The novel blended type cigarettes produced by the method have the advantages of being delicate in fume, rich and harmonious in fragrance, heavy and soft in fume, comfortable in flavor, and clear and sweet in aftertaste; the style of the novel blended type cigarettes is similar to the style of Chinese flue-cured tobacco type cigarettes, besides, the cigarettes have characteristics of international blended type cigarettes, and requirements of different consumers can be met.

The invention discloses a method of extracting tomatoes step by step and a comprehensive application of the extract to cigarettes, relating to the technical field of adding flavour and feed to cigarettes. The technical proposal of the invention is a method of extracting tomatoes step by step and a comprehensive application of the extract to cigarettes, comprising extracting the tomatoes in three steps: the first step, extracting the tomatoes with water to obtain tomato water-soluble components used as cigarette feed; the second step, extracting with alcohol to obtain tomato semi-polar components used as cigarette feed; and the third step, extracting by supercritical extraction method to obtain tomato non-polar components used as cigarette feed. The invention applies the tomatoes to the cigarettes for the first time, makes full use of the tomatoes, and has simple technique and devices and no pollution. Each component applied to the cigarettes has obvious effect.

The invention discloses a technology for treating expanded stems, belongs to the technical field of shred making of tobacco, and in particular relates to the technical field of shred making with tobacco stems. The technology comprises the following steps of: soaking the tobacco stems, storing the stems, quantitatively feeding, heating and humidifying, slicing the stems for the first time, temporarily storing the stem slices, discharging the stem slices, cutting the stems into shreds for the second time, quantitatively feeding, adding the primary stem shreds, storing the stem shreds, quantitatively feeding, drying, and performing secondary flavoring, thus obtaining a stem shred finished product. The obtained product has the advantages of good bulkiness, low breaking rate, low production cost, pure aroma, high filling value, light wood mixed gas, comfortable mouthfeel, soft smoke, capability of reducing tar of cigarettes and good compatibility with the tobacco shreds.

The invention discloses a microbe strain and an application thereof and particuarly relates to a tobacco smoke alkaloid degradation bacterium (Arthrobacter nicotianae GYC103 with the collection number of CCTCC NO:M2010312) capable of simultaneously generating amylolytic enzyme and proteolytic enzyme and an application of the tobacco smoke alkaloid degradation bacterium to tobacco. The strain disclosed by the invention can decompose and utilize nicotine and generate amylolytic enzyme and proteolytic enzyme in a growth process. A strain fermentation liquid or thallus accounting for 1-5wt% of tobacco leaves is added into the tobacco leaves with the water content of 10-50%, and fermentation is performed for 6-72 hours, so that the nicotine content of the tobacco leaves is reduced by 2-20%, the starch content of the tobacco leaves is reduced by 10-35%, the protein content of the tobacco leaves is reduced by 5-25%, the pungency of the tobacco leaves is obviously reduced, the miscellaneous flavor is reduced, the smoke is soft, the tobacco fragrance is enhanced, and the esthetic quality is obviously improved. The microbe strain realizes the purpose of degrading tobacco smoke alkaloid, starch and protein by utilizing microbes, and can be used for properly regulating the contents of nicotine, starch and protein in tobacco leaf raw materials and improving the usability of the tobacco leaves.

The invention provides a coaxial filter rod with double permeability. The coaxial filter rod is sequentially provided with external-layer forming paper, external-layer trench cellulose paper, an external-layer cellulose acetate fiber filter core, internal-layer forming paper, internal-layer trench cellulose paper and an internal-layer cellulose acetate fiber filter core. An internal core and an external core are made by adoption of cellulose acetate tows having different fiber specifications / different numbers of fibers such that smoke pressure drop of the internal core is smaller than that of the external core. The internal core adopts the specification / number of cellulose acetate fibers of 11Y / 15000. The external core adopts the specification / number of cellulose acetate fibers of 7.5Y / 16000 or 7.5 / 16000.The coaxial filter rod with double permeability has following beneficial effects: a large amount of smoke flows through the internal core; bidirectional flow between internal and external layers of tows and trench cellulose paper is generated, thereby increasing a smoke flow path and a filtering area; and as a result, much more smoke particulates are intercepted so that tar amount and CO emission quantity of an cigarette are effectively decreased.

The invention discloses a preparation method of a corn stigma extract for cigarettes. The preparation method comprises the following steps of: (1) mixing corn stigma with water at a mass ratio of 1:(15-20), performing ultrasonic treatment on the mixture for 15-30 minutes and then regulating the pH of the mixture to the range from 5 to 6, filtering the mixture after standing for 6-10 hours, and concentrating the filtrate, thereby obtaining a corn extract sample I; (2) mixing the corn stigma with an ethanol solution with volume fraction of 50%-70% at a mass ratio of 1:(30-50), extracting the mixture for 6-9 minutes by microwaves at a temperature of 50-70 DEG C, and then filtering the mixture, thereby obtaining a corn extract sample II; (3) pouring the sample II into the sample I at a mass ratio of the sample I to the sample II of (2-3):1, stirring while pouring for 15-30 minutes, and then standing for 6-10 hours; then taking the liquid supernatant for filtering, and then concentrating the filtrate to one third of the original mixed liquid. The corn stigma extract is added to cigarettes, and has the effects of softening smoke gas, increasing the fragrance and the sweet taste, and covering offensive odor.

The invention relates to a gillyflower extract and a preparation method and applications thereof, belonging to the technical field of cigarette processing. The preparation method comprises the following steps: drying fresh gillyflower in the shade; smashing the dried gillyflower and sieving by a sieve with 20 meshes to obtain gillyflower powder; carrying out distillation extraction by adopting a device for distilling and extracting at the same time; continuously extracting 50g of gillyflower powder and 20ml of dichloromethane for 1-5 hours at the temperature of 50 DEG C; transferring a distillation extraction liquid to a liquid separating funnel; collecting a dichloromethane layer; and utilizing the dichloromethane rotatably recovered by a rotary evaporator at constant pressure of 40 DEG C to obtain a concentrated solution which is gillyflower extract. With adoption of 0.005-0.1% of gillyflower extract used as a spice additive in flavoring of cut tobacco of cigarette, the flavor of the cigarette can be obviously improved and modified; the fresh and sweet flavor can be enhanced, the stimulation is reduced, the miscellaneous flavors can be removed and the smoke is soft and delicate.

The application relates to a fruit extract. The fruit extract is extracted through the following method, and the method at least comprises the following steps: step one, crushing the fruit; step two, adding the crushed fruit obtained in the step one in Baijiu in brewing 5-30 days before steaming, continuously fermenting to obtain a fermentation product; and step three, extracting the fermentation product obtained in the step two to obtain the fruit extract. By use of the fruit extract disclosed by the present application, the increased stimulation and residual, the rough smoke and other negative effects caused by the traditional method of directly refluxing the extract are overcome although the traditional method can enrich the cigarette incense and increase the sweet taste. The above mentioned extract is applied to the cigarette to play the effects of enriching the cigarette incense, demonstrating the features and moistening the sense organs; the comfort of the oral cavity, the laryngeal part and the nasal cavity is improved, and the smoke is exquisite, soft and mellow. The more important is that the sufficient fusion of the fragrance of the wine and the natural plant fragrance is realized.

The invention aims to provide a method for improving quality of cut stems by aspartic acid based solid-phase Maillard reaction. According to the method, in the charging production procedure of cut stems, water solution containing amino acids(aspartic acid and asparagine) and reducing sugar or complex carbohydrate source and reaction catalyst at a certain ratio is sprayed to cut stems; in the online process of the cut stems, aspartic acid based solid-phase Maillard reaction is carried out; thus, type and content of aroma components of the cut stems are increased, curing fragrance is enhanced, smoke stimulation and offensive odor are reduced, smoke is purified, smoking flavor is improved, organoleptic quality of the cut stems is improved, the cut stems processed by the method have appearance close to the high-quality cut tobacco, and the method needs mild processing conditions which are easy to realize.

The invention discloses a method for preparing a mulberry cigarette flavor, belonging to the technical field of cigarette in the cigarette industry as well as a preparation method of essence and flavors. The method comprises the following steps: (1), preparing materials: bleaching, floating, drying and crushing dried mulberry fruits and screening with a net of 10 to 100 meshes to obtain mulberry powder; (2), extracting: distilling and extracting the mulberry powder, screening with millipores and keeping filtrate; (3), extracting and concentrating to obtain paste as an aqueous mulberry extract;(4), absorbing with macroporous resin to obtain mulberry eluate; (5), reducing pressure and concentrating to obtain a mulberry extract; and (6), preparing the flavor: mixing the mulberry extract and alcohol according to a proportion to obtain a solution as the mulberry cigarette flavor. The method has the following advantages of simple technology, active ingredient maintenance, strong stability of the prepared mulberry cigarette flavor, clean buccal aftertaste, good compatibility with cigarette smell, no residue and low cost.

The invention discloses a method for preparing a lophatherum gracile reconstituted sheet and application of the lophatherum gracile reconstituted sheet in a tobacco product. The method comprises the following steps of: performing water extraction and catalytic degradation on lophatherum gracile or mixture of lophatherum gracile and tobacco serving as a raw material, mixing the material to preparepulp and making a substrate with the pulp; coating concentrated lophatherum gracile extract on the substrate; and curling, cutting and drying the substrate to prepare the lophatherum gracile reconstituted sheet. The lophatherum gracile reconstituted sheet can be independently prepared into the tobacco product or mixed with tobacco shred to prepare the tobacco product, can completely or partially replace the tobacco leaf, change the style characteristic of the tobacco product, achieve fine, soft and smooth smoke, prolong the incense, reduce the uncomfortable feels such as spiking, biting, coarseness, choking and the like of throat and obviously improve the consistency and the stability of the incense of smoking. Meanwhile, the content of the tar, nicotine and carbon oxide released by the smoke of cigarettes can be obviously reduced.

The invention discloses a wild chrysanthemum extract and taraxacum extract matched tobacco flavor, and a preparation method and application of the wild chrysanthemum extract and taraxacum extract matched tobacco flavor. Vacuum reduced-pressure distillation is carried out to concentrate to prepare extract at low temperature, and while the original aroma components of wild chrysanthemum and taraxacum are kept during concentration, the pharmacological values of Chinese medicines are not destroyed; the wild chrysanthemum contains rich flavones, volatile oil, various glucosides, terpenes and the like and has the efficacies of resisting bacterium, diminishing inflammation, reducing blood pressure, dispelling wind, clearing heat, diminishing swelling and detoxifying; the taraxacum is a common traditional Chinese medicinal material and has the efficacies of resisting bacterium, benefiting bile, promoting lactation and resisting tumors; the tobacco flavor is brown or claybank flowing liquid, has full-bodied chrysanthemum fragrance and herbal aromas, is slightly sweet, is safe and natural, can harmonize the cigarette flavor in a tobacco aromatic-flvouring test to achieve fresh, fine and soft cigarette flavor, can obviously cover up the offensive odor and reduce the mouth irritation, and has certain inhibiting effect on sphagitis symptoms caused by smoking.

The invention discloses a tobacco essence capable of reducing smoke irritation and a preparation method thereof. The tobacco essence is prepared from, by weight, 16-20 parts of inula flower extracts, 10-12 parts of rhodinol, 10-12 parts of rosemary oil, 8-10 parts of propylene glycol, 6-8 parts of guaiacol, 6-8 parts of vanillin, 4-6 parts of sweet orange oil, 4-6 parts of patchouli oil, 3-5 parts of menthone, 3-5 parts of bronyl acetate and 3-5 parts of geranyl acetate. The tobacco essence can effectively improve cigarette aroma, soften smoke, reduce irritation and improve taste; meanwhile, due to the fact that inula flowers have a function of moistening lungs to arrest cough, in the smoking process, effective components of inula flowers can be sucked into a human body, the effects of moistening lungs, reducing phlegm and relieving a cough are achieved, the irritation of smoke to respiratory mucosa is relieved, and the harm of cigarettes is reduced.

The invention relates to the technical field of microorganisms, and in particular relates to a bacillus velezensis and an application of the bacillus velezensis in preparation of a tobacco flavor. Thebacillus velezensis JXQ21 provided by the invention has a preservation number of CGMCC NO.17833. The content of flavor substances such as esters, ketones, alcohols, phenols, hydrocarbons, and aldehydes in the tobacco flavor obtained by fermentation of a tobacco extract by the bacillus velezensis JXQ21 is obviously increased, and the flavor has good compatibility with tobacco, and can soften tobacco smoke and improve the smoking taste of cigarettes.

A preparation method of a mulberry leaf volatile oil and application thereof to cigarette perfuming are disclosed. The invention provides the preparation method of the mulberry leaf volatile oil and application thereof. According to the invention, the mulberry leaf volatile oil is obtained by the following steps: condensing and collecting volatile oil-containing water by a water distillation method, pre-treating with a reverse osmosis membrane to remove impurities, and adsorbing with an adsorption chromatographic column, eluting and concentrating. The mulberry leaf volatile oil provided by the invention is added to tobacco shreds, so as to make the tobacco aroma full and rich and modify the tobaccos to make the smoke gentle and fine; and the mulberry leaf volatile oil has obvious effects of masking odor and improving aftertaste comfort. The mulberry leaf volatile oil has good solubility properties, is applied to tobacco flavoring, has good effects, and serves as a novel and important natural flavor for tobacco flavoring.

The invention discloses a treatment method for sun-cured red tobacco. The treatment method comprises the following steps of: carrying out first reflux extraction reaction of sun-cured red tobacco after leaf tobacco threshing and sun-curing and alcohol aqueous solution with mass fraction of 60% according to the weight ratio of 1:(10-20), draining the alcohol aqueous solution after reacting for 1-2 hours, carrying out second reflux extraction reaction of the sun-cured red tobacco and alcohol aqueous solution with mass fraction of 80% according to the weight ratio of 1:6-10, draining the alcohol aqueous solution after reacting for 0.5-1.5 hours, drying until the moisture content is 12-15%, and finally adding essence and baking for 20-40 minutes at 60 DEG C to obtain treated sun-cured red tobacco. A low-tar cigarette containing the sun-cured red tobacco treated by the treatment method not only can be endowed with the flavor of the sun-cured red tobacco so as to improve the problem of insufficient aftertaste of the low-tar cigarette, but also can have the effects of reducing the irritating smell and smoke, doping masking and increasing the flavor so as to greatly improve the taste of the low-tar cigarette.

The invention discloses a cigarette filter stick additive and application thereof to a cigarette filter stick. Triacetin is used as solvent, and ethyl acetate, 3-methyl valeric acid, 3-methyl glucose valerate, linalyl acetate and linalool are added into the solvent to be mixed and prepared into the cigarette filter stick additive and account for 0.010-0.050%, 0.005-0.020%, 0.005-0.020%, 0.01-0.007% and 0.001-0.007% of the weight of triacetin respectively in weight; the cigarette filter stick additive is uniformly sprayed into cigarette filter stick tows by the ratio of 6.0-8.0% of the weight of the cigarette filter stick tows to prepare the cigarette filter stick. The cigarette filter stick additive is used for the cigarette filter stick, has the advantages of emitting fragrance stably and keeping the fragrance for a long time, and can soften smoke, promote cigarette fragrance quality and improve the smoking quality of cigarettes.

The invention relates to tobacco essence and a production method thereof, in particular to natural strawberry essence and a preparation method thereof. The tobacco essence is prepared by mixing the following raw materials by weight percent: 10-15% of strawberry concentrate, 0.1-0.3% of acetic acid, 0.5-1.5% of leaf alcohol, 0.01-0.03% of acetaldehyde, 0.1-0.3% of hexanoic acid, 0.1-0.5% of ethyl maltol, 0.8-1.2% of methyl cinnamate, 0.03-0.07% of methyl dihydrojasmonate, 0.1-0.4% of deoxy linalool, 0.1-0.5% of gamma-decalactone, 0.3-0.5% of gamma-octalactone, 0.2-0.4% of delta-dodecalactone and the balance of propylene glycol. The natural strawberry essence has stronger natural sense, is purer, has real fragrance and can improve the cigarette fragrance, reduce irritation, mellow the smoke and ensure sweet aftertaste in the oral cavity after being added to the cigarettes.

The invention relates to the technical field of microorganisms, in particular to saccharomyces cerevisiae and application thereof in preparation of tobacco flavor. The collection number of the saccharomyces cerevisiae SJ-1 is CGMCC NO.17832. The saccharomyces cerevisiae SJ-1 has obviously increased content of flavor substances such as esters, ketones, alcohols, phenols, hydrocarbons and aldehydesin the tobacco flavor obtained by fermentation of tobacco extract, has good suitability with tobacco and can soften smoke and improve cigarette smoking flavor.

Natural plant composite particles with sweetening and moisture-preserving functions and a preparation method and application thereof are provided. The composite particles which are 30-60 in mesh are prepared by: crushing Poria, Momordica grosvenori fruit, root of Angelica sinensis, florists chrysanthemum, honeysuckle, flowering tobacco, licorice root and Pinellia ternata tuber separately, performing cell disrupting, screening to obtain cell-broken powder, adding auxiliaries to the cell-broken powder, mixing well to obtain a mixture, adding a certain amount of water into the mixture to obtain wet material, subjecting the wet material to rotary granulating, drying at low temperature, stabilizing the size, and screening; based on existing rich plant materials and long-standing studies and application history, the plant materials with sweetening and moisturizing functions added herein feature zero harm, zero additives, zero pollution and good safety and reliability and have the functions,such as aroma enhancing, disinfecting and antioxidation; the plant materials do not combust, so that harm harmful matters are avoided; by adding the prepared composite particles to a cigarette filter,effective active ingredients of plants themselves can be retained.

The invention discloses a carbon-containing polypropylene filament tow for a cigarette and a preparation method thereof. The carbon-containing polypropylene filament tow for a cigarette is prepared by uniformly blending polypropylene slices and activated carbon functional master batches and carrying out melt spinning of the mixture. Concretely, the preparation method comprises the following steps of uniformly blending activated carbon functional master batches having carbon content of 10 to 40%, cooling master batches and modified master batches, blending the mixed master batches and polypropylene slices with control of a ratio of the master batches to the polypropylene slices as main materials in an auto-weighing way, carrying out melt spinning by a screw extruder, and orderly carrying out oiling, drafting, water washing, curling and drying to obtain the carbon-containing polypropylene filament tow for a cigarette, wherein particle sizes of activated carbon of the activated carbon functional master batches are in a range of 0.3 to 2.0 microns; aperture sizes are in a range of 0.5 to 3 nanometers; and a specific surface area is in a range of 600 to 1500 m<2> / g. The carbon-containing polypropylene filament tow for a cigarette can be spun directly by one-step method-based equipment for spinning a polypropylene filament tow for a cigarette, has strong operability, contains uniformly distributed activated carbon, reduces falling of activated carbon, allows carbon content adjustment, and has a low production cost and all indexes satisfying industry requirements and national standards.

The invention discloses a composite caramel-flavour aroma spice, a baking preparation method and application. The composite caramel-flavour aroma spice is prepared by uniformly mixing and reacting thefollowing raw materials, by mass: 1.0-20.0 parts of tobacco leaves, 0.2-10.0 parts of saccharides and 0.1-10.0 parts of pure water. The tobacco leaf raw materials are shredded to obtain tobacco shreds, the tobacco shreds and the saccharides are evenly stirred, then pure water is sprayed into the mixture to be evenly mixed, then the mixture is baked in a baking oven preheated to 120-180 DEG C for0.1-40 min for a reaction, and after the reaction is finished, solvent extraction is conducted to obtain the spice. The composite caramel-flavour aroma spice is applied to cigarettes, inapplicable tobacco leaves, reconstituted tobacco leaves, cut stems and expanded cut tobaccos, has rich tobacco aroma and caramel aroma, and does not generate 4-methylimidazole.

The invention discloses a tobacco ageing method by blending tobacco with pelargonium roseum and sweet basil. The method includes mixing the tobacco, the pelargonium roseum and the sweet basil according to a mass ratio and then putting the mixture in a sealed container for natural ageing for 3-24 months, wherein the pelargonium roseum and the sweet basil are wrapped by a layer of degreased cotton gauze. According to the method, the tobacco adsorbs natural fragrances of plants through its own adsorption capability to have faint scent and sweet taste, and fragrant substances do not need to be processed into flavors and fragrances through complex technology, so that the objectives of perfuming the tobacco and improving smoking quality are achieved. The tobacco ageing method has the advantages of simple technology, high safety, feasibility in operation and the like.