CN1039530A - Cigarette - Google Patents

Abstract

By mixing organic additive, make cigarette when suction and profit, good to eat with high-nicotine content pipe tobacco.For example, mix nicotine content in the pipe tobacco greater than 2% cigarette, contain a kind of organic additive that mixes in it at least, its content is greater than 1%.When most of organic additive was levulic acid, during the suction of the cigarette that then provided and profit and produce pleasant tobacco flavor, and the peculiar smell that distributes was minimum.In addition, be mixed with the cigarette of levulinic acid nicotine and so on salt, it demonstrates the ratio of lower FTC " tar " and nicotine, provides simultaneously and profit, good to eat and be wound with the taste of local flavor.

Description

Cigarette

The present invention relates to the smoking product of cigarette and other types, particularly those have the smoking product of organic additive.

Cigarette is common smoking product, and it is roughly round strip structure, comprises by a certain amount of tobacco (for example with the pipe tobacco form) of the lapping institute winding up of paper and so on, forms tobacco rod thus.At present, common cigarette comprises the smoking mixture material, the nicotine content of most of compounds is in 1.2% to 2.25% scope, and is wherein comparatively general with 1.4% to 2% scope, and especially with 1.6% to 1.8% the most general (above percentage number average is a benchmark with the dry weight of tobacco material).Preferably make the cigarette have cylindrical filter, said filter tip with mode from beginning to end and tobacco rod to directly.Usually, filter tip is to be made by the fibrous material such as acetate fiber, and with packet header material winding up, makes it to be connected on the tobacco rod.

Be included into the common cigarette of " full blast flavor " particularly for tobacco items and send tobacco flavor, local flavor and the pleasant sensation of making us desireing to the smoker.Generally speaking, every " full blast flavor " cigarette is sent about 14 milligrams or than more FTC " tar ".The second class common cigarette is " full blast flavor low tar " class.In general, each " full blast flavor low tar " cigarette is sent 8-14 milligram FTC tar approximately, and than low FTC nicotine (also the claiming nicotine) content of " full blast flavor " cigarette.The 3rd class common cigarette is " ultra-low tar " class.This " ultra-low tar " cigarette is sent lower FTC of content " tar " and nicotine.FTC " tar " amount that general every " ultra-low tar " cigarette is sent is about below 7 milligrams.Usually, " full blast flavor low tar " and " ultra-low tar " cigarette its with the face of cylinder of mouthful contact zone on have the laser eyelet, or have the filter tip that can from main smog stream, remove " tar " and nicotine efficiently.

Usually, return and containing the cigarette of low amount " tar " and this class of nicotine, it can be felt that the taste that and intensity are lower than this class cigarette near " full blast flavor " cigarette characteristic step by step.Someone advises adding a large amount of flavorants in the pipe tobacco of low " tar " content cigarette, with taste, intensity and the pleasant sensation that strengthens this class cigarette.Yet this class additive often produces the main smog that user's mouth, nose and throat is had sour and astringent sense or excitement.

In addition, the tobacco that can use natural high-nicotine content is as pipe tobacco, with tobacco flavor, intensity and the pleasant sensation that strengthens this cigarette.But the cigarette that nicotine content is high [for example this comprises that natural nicotine content is approximately higher than 2.25%(by weight) tobacco compound] often easily produces the undesirable main plume that user's mouth, nose and throat is had puckery sense or stimulation.

A kind of cigarette such as " ultra-low tar " preferably can be provided, this cigarette is the peculiar gratifying tobacco flavor of transmissibility " full blast flavor low tar " cigarette, intensity and suction pleasant sensation both, simultaneously give good to eat sensation again, rather than sensation too puckery or that stimulate very much.In addition, a kind of cigarette such as " full blast flavor low tar " preferably is provided, this cigarette is the peculiar gratifying tobacco flavor of transmissibility " full blast flavor " cigarette, intensity and suction pleasant sensation both, gives the good to eat sensation of people simultaneously again, rather than sensation too puckery or that stimulate very much.And, it would be desirable and improve the suction properties that those expect made cigarette with tobacco or other tobaccos with various different nicotine contents.

The present invention relates to the gratifying tobacco flavor of a kind of both transmissibilities, send the smoking product of low amount FTC " tar " simultaneously again.Preferable goods of the present invention are a kind of like this cigarette, its transmissibility " full blast flavor " distinctive taste of cigarette, intensity and suction pleasant sensation, and " full blast flavor low tar " peculiar lower FTC of cigarette " tar " content.Another kind of preferable goods are transmissibility " full blast flavor low tar " the distinctive taste of cigarette, intensity and suction pleasant sensation, and the cigarette of peculiar low FTC " tar " content of " ultra-low tar " cigarette.In addition, preferable cigarette is extremely good to eat, and it is than the similar cigarette of the FTC that sends same amount " tar ", and it provided feels the suction properties (for example not causing puckery sense or excitant) that has and moisten.Cigarette with following characteristic is interesting especially:

(1) FTC " tar " and " FTC " nicotine is lower;

(2) FTC carbon monoxide and FTC nicotine is lower;

(3) gratifying tobacco flavor, intensity and pleasant sensation; And

(4) suction properties of easily suitable for reading and profit, and taste is not too light.

According to material that can aspirate cigarette comprising of the present invention (for example tobacco) and at least a organic additive.For example, a kind of cigarette of the present invention can be contained following composition: (1) content is about the nicotine more than 2% (is benchmark with the dry weight that can aspirate material); (2) at least a organic acid, content are benchmark greater than 1%(with the dry weight that can aspirate material approximately), as the additive of cigarette.Usually, can aspirate in a part at least and add organic acid in the material.Acid in cigarette can dissociate and/or the state of non-disassociation exists.Preferable organic acid is a levulic acid, and it can exist with levulic acid and/or levulic acid ionic species in cigarette.

The term that can aspirate material " dry weight " in the smoking product that relates to used herein means and can aspirate material under 214 (101 ℃) temperature, in the forced ventilation baking oven, placed 3 hours, the amount that is dried to constant weight is [referring to Moseley et al, Ind.Eng.Chem.Vol.43, P.2342(1951)].

Used hereinly relate to numerical value that the term that can aspirate " nicotine content " in the material means that the amount by the alkaloid-nicotine of spectroscopy techniques analysis and quantitative assay obtains divided by the aspirated material dry weight of analyzing gained [referring to Harvey et al, Tob.Sci., Vol.25, P.131(1981)].

The aspirated material that is fit to manufacturing the present invention's cigarette can be the tobacco material that comprises the tobacco material of one or more natural high-nicotine content.The tobacco material of this natural high-nicotine content can use separately, or the tobacco material that blending (1) one or more nicotine contents are lower within it, and/or (2) one or more tobaccoes.Like this, can aspirate the nicotine total content of material or mix nicotine content the present invention's cigarette comprising about those cigarettes more than 2%.

Be suitable for and in according to cigarette of the present invention, mix a kind of salt of forming by nicotine and organic acid at least.This salt mixes in the cigarette as additive.Preferably the nicotine and the organic acid mol ratio of being mixed in the salt reaches 1: 3.If comprise that levulinic acid nicotine is then better in the salt additives.The mode of mixing of specific salts should be able to cause said salt to decompose between the operating period cigarette.For example, the present invention's cigarette can comprise can aspirate material, and at least a salt of being made up of nicotine and organic acid, and as additive, wherein: it is benchmark with the dry weight that can aspirate material that the nicotine content in (1) cigarette is approximately higher than 2%(); (2) a kind of of above-mentioned salt is levulinic acid nicotine.

The existence of the salt of nicotine/organic acid in cigarette can provide tobacco flavor, intensity and the suction pleasant sensation of improvement in this goods use, and the special favor that improves or keep smog.

Preferable cigarette of the present invention does not in use have tedious peculiar smell.

The accompanying drawing summary:

Fig. 1 is the longitudinal sectional drawing of cigarette of the present invention.

One embodiment of the present of invention are shown in Fig. 1, and it has the shape of cigarette 10.Be generally cylindrical, strand-shaped thing (be called for short circle bar) 15 this cigarette comprising, it is by the aspirated material 20(of winding up in outer covering material 25 pipe tobacco for example) formation.Below justify bar 15 and be called " tobacco rod ".Tobacco rod open ended exposes and can aspirate material.Cigarette 10 also comprises a filter tip 30, and this filter tip is pressed close to an end of tobacco rod 15, axially with the tobacco rod head and the tail to directly, preferably dock each other.Filter tip 30 is common cylindrical, its diameter basically with the equating of tobacco rod.Filter tip open ended is so that air and plume are logical.Said filter tip 30 comprises filtering material 35, along its longitudinal extension face all with the filter tip lapping institute winding up of reeling.

Filter tip 30 is connected on the tobacco rod 15 by means of packet header material 45, this filter-tip total length of packet header material 45 winding ups and tobacco rod in abutting connection with the position.Make the inner surface of packet header material 45 be fixed on the outer surface of filter tip lapping 40 and tobacco rod lapping 25 with suitable binding agent.If need, the cigarette of ventilation or air dilution is provided with air dilution facility, a succession of eyelet 50 among the figure for example, and each eyelet runs through packet header material and filter tip lapping.

Usually, tobacco rod is about 50 millimeters to 85 millimeters, about 17 millimeters to 27 millimeters of circumferential size; And its lapping is common cigarette paper.Suitable cigarette paper can have been bought from the market, produce as reference number (Reference Nos.) 719 and 856(Kimberlyclark company), or Ecusta Experimental Nos.TOD 01788 and TOD 03363(Ecusta company product).As required, can adopt double wrapped.Tobacco rod and the cigarette of making thereof can adopt known cigarette technology and equipment to make any known configuration.

Generally, filter tip is about 20 millimeters to 35 millimeters, and girth is about 17 millimeters to 27 millimeters.Filtering material can be any suitable material such as cellulose acetate, polypropylene and tobacco-containing material.Can use the low this composition of nicotine filter efficiency or the filtering material of performance.The filter tip lapping generally is common filter tip coated papers, it be breathe freely or breathe freely basically.Yet, can use the cellulose acetate filter tip of no lapping as required.Be applicable to that various filter tip of the present invention can make with the technology and equipment of known production cigarette filter.

Usually, the packet header material is reeled in abutting connection with the position at filter tip and tobacco rod, and along the length extending of tobacco rod about 3 to 6 millimeters.And the packet header material generally is common packet header paper.The packet header material can have different porositys.For example, the packet header material can be airtight basically or ventilative, also can carry out certain processing (for example using machinery or laser beam perforation technology), to make it to have the zone of eye with holes, hole or passage, provides a kind of means of air dilution by this for cigarette.Eyelet total surface area and eyelet position around cigarette can change, with the operating characteristic of control cigarette.

Term used herein " air dilution " is meant by air dilution facility inhaled air volume and the ratio that passes through cigarette inhaled air and aerosol and use mouthful existing air of contact portion and aerocolloidal cumulative volume at the cigarette end.For the present invention's the cigarette air dilution or ventilation, its air dilution can be different.Preferably can be for the air dilution of cigarette greater than 20%, especially being good greater than 30%.The upper limit of the air dilution of cigarette is generally less than 80%, and more frequent is less than 60%.

The aspirated material that is used to produce tobacco rod can be different.For example, tobacco material can be made the form processing such as extruding shape (for example the extrude bar of moulding or be squeezed into tubular), and have the inserts form such as pipe tobacco.Usually, the tobacco of cigarette material has the form of pipe tobacco.Term used herein " inserts " or " pipe tobacco " mean and comprise that those have the tobacco material that is fit to preparation cigarette cut tobacco strip.Therefore, inserts can comprise that those mixed already, and becomes the tobacco material of preparing to be used to produce the form of cigarette.The tow (strands) that tobacco filler is used always in should making with common cigarette or the form of silk are used.For example, tobacco material can be cut into width and be about 1/25 inch to 1/60 inch tow shape form use, especially to be cut into 1/30 inch to 1/40 inch for good.Generally, the length of this tow is about 0.25 inch to 3 inches.

As in each stage of producing cigarette carry out usually, can expect blending and water lining tobacco.For example, the method for using always in producing cigarette can be applied to the additive such as flavorant and humectant in the tobacco material.Suitable additive comprises the flavorant such as vanillic aldehyde, cocoa power, Radix Glycyrrhizae, menthol, tobacco aromatic oil and tobacco extracts.This class additive should be applied to and can aspirate in the material as the top dressing component.

Aspirating the most of inserts that exists in the bar is the tobacco material.Yet, tobacco material and another kind such as the tobacco substitute can be able to be aspirated and expect to mix.Suitable tobacco material can exemplify as follows: toast tobacco, burley, Maryland tobacco or Far East tobacco; And such as expanding tobacco, processing tobacco stems, homogeneous tobacco material or contain processing tobacco material the homogeneous tobacco material of the endogenous and external source nicotine of different content; Or their mixture.As required, the tobacco material is mixed with small amount of carbonized material and/or pyrolysis material.

Tobacco material with natural high-nicotine content should be configured for the part of aspirated inserts of production the present invention's smoking product at least.Usually, the processing tobacco of the tobacco of this effective high-nicotine content or high-nicotine content, its nicotine content is about more than 2.5%.Nicotine content in the high-nicotine tobacco material mostly about more than 4%, and in some cases, is higher than 5% often about more than 3%.In general, be used for tobacco material nicotine content of the present invention and be no more than 10%.

The inserts of high-nicotine content can be different.For example, being named by U.S.D.A. is the tobacco of 35 types (Type 35 One Sucker), and 36 types (Green River), or the tobacco of 37 types (Virginia Sun Cured) is the high common tobacco of natural nicotine content.Cultivar such as the yellow cigarette, its natural nicotine content is generally in 6% to 10% scope.In addition, the commercial baking tobacco (naming the type for 11-14 by U.S.D.A) and the last stem leaf of burley (being named by U.S.D.A is 31 types) also are useful.The natural nicotine content of many tobaccos can be depending on the agronomy condition of tobacco growing, and the concrete primary strain of tobacco.

Can use finished tobacco material.This processing tobacco provides with tobacco type (the reconst it ut ion-type) technology of remaking.For example, can produce the tobacco material with extruding, cast thin slice (cast sheet), modified form fourdrinier machine or paper technology.The raw material that is used for the production and processing tobacco can comprise the high tobacco of above mentioning of those nicotine contents; Perhaps various types of tobacco extracts can be used to process in the production stage of tobacco.In addition, can be under the condition that is fit to provide product with different nicotine contents the production and processing tobacco.As required, nicotine can be mixed in the expanded solvents, the latter is used to provide a kind of volumetric expansion processing tobacco material with high-nicotine content.At United States Patent (USP) 3,524,451(author Fredrickson) in a kind of typical expansion process has been described.And processing tobacco material package is drawn together tobacco or through mixing, admixing, is perhaps used the tobacco material of tobacco extracts, spray-dired tobacco material or tobacco aromatic oil otherwise processed.Therefore, as soon as finish after the manufacturing procedure of processing in preparation of tobacco material or the production process and before it is used to produce cigarette, processing tobacco material has higher nicotine content.

The processing tobacco of the tobacco of high-nicotine content and/or high-nicotine content can be used as the tobacco material of cigarette, the component of cigarette blend or the part component of cigarette blend.For example high-nicotine tobacco and/or high-nicotine processing tobacco material can expect to mix less than 2% tobacco approximately with tobacco and/or nicotine content.Usually, (that is mixing nicotine total content is approximately higher than 2%) " America blend " (American blends) that so-called nicotine content is high is the desirable feedstock of producing cigarette.Being used for the tobacco material of tobacco rod of production cigarette of the present invention or the typical total nicotine content of compound approximately greater than 2.25%, generally greater than 2.5%, often is approximately greater than 3%, under a lot of situations approximately greater than 3.5%, in some cases approximately greater than 4%.

Be applicable to that organic acid herein can be any organic acid or organic compound, as long as its effect when contacting with nicotine is similar to lewis acid.Be applicable to that implementing organic acid of the present invention can exemplify as follows: comprise the aromatic acid, carboxylic acid, heterocyclic acids, terpenoid acid, the saccharic acid such as pectic acid, amino acid, cycloaliphatic acids, dicarboxylic acids, aliphatic acid, ketone acid of benzoic acid type acid and the acid of substituted benzoyl acid type etc.Preferable organic acid is the aliphatic acid of straight chain and side chain, wherein with the aliphatic monocarboxylic acid for better, particularly ketone ester family monocarboxylic acid is best.Appropriate organic can exemplify as follows: formic acid, acetate, propionic acid, isobutyric acid, butyric acid, alpha-methyl butyric acid, isovaleric acid, Beta-methyl valeric acid, caproic acid, 2-furancarboxylic acid, phenylacetic acid, enanthic acid, sad, n-nonanoic acid, collection tartaric acid, citric acid, oxalic acid, malonic acid, glycolic, butanedioic acid, ascorbic acid, tartaric acid, fumaric acid and pyruvic acid, and more rudimentary aliphatic acid (is that carbochain is less than C ₁₂), higher aliphatic acid (is that carbochain is C ₁₂To C ₂₀) and the acid of other these classes.Best organic acid is to be called Levulinic acid (CH ₃COCH ₂CH ₂COOH) γ-keto esters fat acid.Levulinic acid is also referred to as acetopyruvic acid, α-ketone valeric acid and 4-oxopentanoic acid.Effective organic compound with acids characteristic comprises phenol such as healing wood phenol, vanillic aldehyde, former a little tea aldehyde etc.

In view of many organic acids are suitable flavorants, therefore many organic acids can improve the local flavor or the fragrance of smog.Yet, whether certain specific organic acid plays flavorant, this depends on the specific organic acid amount as additive, and the local flavor limiting value of used specific acid is [referring to Tobacco Flavoring For Smoking Products, by Leffingwell et al, P.11 to 15(1972)].But preferably use those organic acids that under low content, just can bring flavour, to avoid bringing undesirable peculiar smell or fragrance to cigarette to cigarette.For example, perhaps preferably use the enough low organic acid of some content, so that cigarette does not demonstrate in fact sentient taste or fragrance such as chemistry flavor, metallic taste, bitter taste, pungent or soapy flavor; Or relevant with smoking can cause the inharmonic taste of organoleptic general characteristic etc.

Best organic acid is a lewis acid.The good to eat characteristic that this class organic acid can bring and moisten for cigarette, and can not bring any remarkable inharmonious taste or fragrance.As required, a certain amount of various other organic acids can be mixed with lewis acid, and as additive of the present invention.For example, best most of organic acid additive is a lewis acid.

Organic additive can mix in the cigarette everywhere or each position.For example, organic acid or organic acid mixture can be applied in the tobacco material, mix in the part or all of tobacco material, are applied in the lapping of tobacco rod, are applied in the glue-line of tobacco rod lapping, and put into cigarette filter or the like.As required, can in the production process of processing cut tobacco, mix in this class material.For example, organic acid can be mixed with tobacco extract or tobacco aromatic oil, the tobacco material/organic acid mixture that is produced can be admixed, mix with other tobaccos or tobacco material, or is used for handling other tobaccos or tobacco material separately.Organic acid can apply with the form of non-disassociation and/or disassociation (for example carboxylate) or be present in the cigarette.

Usually, organic additive can be mixed with the tobacco material, and this additive is mixed in the cigarette.The mode that applies of additive or method depend on whether said additive is diluted to liquid state and applies, or depend on additive position in cigarette.For example, available syringe or such as (garniture injection), spray-drying, coating and encapsulate (encapsulation) are injected in spraying, blending (casing), electrostatic precipitation, dipping, additive technology apply additive.

The organic acid suitable solvent comprises water, ethanol, glycerine (glycerine), propane diols etc., and their composition.

One or more salt of being made up of nicotine and organic acid can be mixed in the cigarette.Use these salts that a kind of cigarette with higher nicotine content can be provided, and organic additive is provided.This class salt can mix in those cigarettes with different nicotine content tobacco material.

The organic acid in preferable nicotine/acylate and the mol ratio of nicotine are 1: 1,2: 1 or 3: 1, and best than being 3: 1.The salt that best salt is made up of the nicotine and the organic acid of complete ionization.The preferable ionized salts of this class is that two nitrogen-atoms of wherein nicotine are all by Ionized these salt of organic acid acid hydrogen.For example, the good salt of a kind of spy is by 1 mole of nicotine and 3 moles of salt that levulic acid is formed, and its mol ratio is 1: 3.

Nicotine/organic acid salt can utilize this technical field skilled person technique known to prepare easily.The parfe ladder has compiled many these class technology [referring to Perfetti in Beitrage Zur

Tabakforschung International, Vol.12, No.2, P.43(1983)], quote herein and only supply participate-reform).Being preferably in is enough to generate under the condition of salt, makes nicotine and is stoichiometric proportion at least, and generate the necessary organic acid contact of specific salts, and form nicotine/organic acid salt.

Usually, non-volatile basically under the production and storage condition of smoking product by nicotine and the formed preferable salt of organic acid, but the specific nature of various salt may be different.For example, contain the nicotine/organic acid salt of carbon number less than 20 straight or branched aliphatic acid, its mol ratio is 1; 3(nicotine: acid), under environmental condition, their general one-tenth is liquid.This class salt often promptly decomposes under less than 100 ℃ temperature, generally decomposes in 50 ℃ to 60 ℃ temperature range.Again for example, contain the nicotine/organic acid salt of binary organic carboxyl acid, its mol ratio is 1: 2(nicotine: acid), then under environmental condition, they generally are solid-state.This class salt often decomposes in 90 ℃ to 120 ℃ temperature range.And for example in another example, contain the nicotine/organic acid salt of the acid of being with phenyl, generally its mol ratio is 1: 1,1: 2 or 1: 3(nicotine: acid).Usually this class salt is solid-state under environmental condition.This salt often decomposes in 110 ℃ to 200 ℃ temperature range.

In view of many organic acids are suitable flavorants, so a lot of nicotine/organic acid salt can improve the local flavor or the fragrance of main smog.Can provide the salt of main smog local flavor and fragrance can exemplify as follows to a certain extent: acetate nicotine, oxalic acid nicotine, malic acid nicotine, isovaleric acid nicotine, lactic acid nicotine, citric acid nicotine, phenylacetic acid nicotine and tetradecanoic acid nicotine.Yet, perhaps preferably use those as long as just can bring the salt of special favor on a small quantity, to avoid bringing undesirable peculiar smell and fragrance to cigarette to cigarette.

It is best that nicotine/organic acid salt is levulinic acid nicotine.The good to eat characteristic that this class salt can bring and moisten to cigarette, and can not produce any significant inharmonious taste or fragrance.As required, can a certain amount of various nicotine/organic acid salt and levulinic acid nicotine is mixed, and as additive, so that cigarette of the present invention to be provided.

Above-mentioned salt can mix in the cigarette everywhere or each position.For example, salt can be applied in the inserts, mix in the part or all of inserts, be applied in the lapping of tobacco rod, be applied in the glue-line of tobacco rod lapping, or be applied to position (for example chamber) that is heated thereafter etc.

Generally, mix with the tobacco material by making additive, and nicotine/organic acid salt additives or additive package are mixed in the cigarette.The mode or the method that apply additive depend on that additive is to apply with solid or liquid condition, perhaps depends on additive position in cigarette.For example, can with syringe or such as spraying, electrostatic precipitation, dipping, additive injection, spray-drying, coating and encapsulate technology apply.

When nicotine/organic acid salt adopts spray technique to apply, be preferably formed as the liquid solution of said salt in suitable solvent.This class solution should show enough low viscosity, so that the spraying of solution or injection.Yet preferably salinity is too not low in the solution, in order to avoid significantly disassociation takes place salt.Usually, the salinity in the solution is about 20%(by weight) or higher.

The suitable solvent of above-mentioned salt comprises water, ethanol, glycerine (glycerine), propane diols etc., and their composition.Usually, most of nicotine/organic acid salt can dissolve in this kind solvent or is miscible, and in the time of in being dissolved to a small amount of solvent, said salt significant disassociation can not take place.For example, salt can form hydrate in water, and unlikely generation dissociates significantly.Yet disassociation to a certain degree can take place in the salt of usefulness a great deal of solvent dilution, so that applies a kind of mixture of being made up of nicotine/organic acid salt, nicotine and organic acid to cigarette.Therefore, can apply a kind of additive that becomes nicotine and levulic acid form to cigarette.

As required, can in cigarette, mix: (1) at least a nicotine and organic acid salt and (2) nicotine of containing, with as additive.Such preferable additive comprises a kind of salt at least, and nicotine and organic acid mol ratio are 1: 3 in this salt.

The organic acid amount that is used for cigarette can be inequality.The organic acid content that mixes in the cigarette depends on such as following factors: organic acid position in cigarette, and the configuration of cigarette.Said configuration comprises the composition and the character thereof of filtrate and initial tobacco compound, the ventilation degree of cigarette, and other these class factors.For example, comprise the total nicotine amount in most of cigarette of the present invention or mix the nicotine amount about 2% to 10% tobacco material, the amount of the organic additive that cigarette is provided is a benchmark about 1% to the 10%(dry weight with tobacco filler preferably often), to bring acceptable tobacco flavor, intensity and pleasant sensation in use.Generally, being applied to organic acid content in this class cigarette approximately greater than 2%, often is to be benchmark greater than 3%(with the dry weight of tobacco filler in the cigarette approximately).

Used nicotine/organic acid salt (one or more) in the cigarette, its consumption can be inequality.The salt amount of mixing in the cigarette depends on such as following factors: the configuration of the distribution of salt and cigarette in cigarette.For comprising most of cigarette that nicotine content is about 1% to 2% tobacco filler, often preferably the nicotine total amount in the salt additives that cigarette provided is until about 8%, and more frequent is until about 4%.Such additive capacity can bring gratifying tobacco flavor, intensity and pleasant sensation when smoking.In general, the nicotine/organic acid salt that is applied in the typical cigarette provides about salt additives of 0.25% to 20%, preferably about amount of 1.2% to 13% (above percentage number average is a benchmark with the dry weight of tobacco filler in the cigarette).In some cases, the most handy about 3.5%(is a benchmark with the dry weight of tobacco filler in the cigarette) or the salt additives of high-load more.

The present invention's cigarette preferably provides a kind of like this smog stream, and the pH value that it presented is equal to or less than the similar cigarette that is mixed with low content (for example percetage by weight is approximately less than 2%) organic additive.In some cases, in order to reduce the pH value of cigarette smog stream when using, in cigarette, mix an amount of organic additive.So-called main smog stream is meant by the smog in the goods suction smoker mouth.For example, contain the cigarette that can aspirate the tobacco material for a kind of in the outer covering material of reeling, then main smog stream is meant the main tobacco smoke that comprises burning of tobacco material and/or thermal decomposition product.

The term of so-called " main smog pH " means the pH value of average per share cigarette in total smog that the technology described in the employing " Sensabaugh et al in Tobacco Science; Vol.X I, pp.25-30(1967) " (quoting only for reference herein) records.The typical main smog pH value of cigarette is that average every cigarette is in the scope of 4.5 units of unit to 8.5.

About the reduction of main smog pH, it is meant the mean ph value that reduces every cigarette master smog.This class reduction is to realize by the additive (for example organic additive and/or nicotine/organic acid salt) that adds effective dose.In general, the reduction of pH is to instigate the pH value to reduce about pH unit more than 0.03; Preferably reduce about pH unit more than 0.08.Usually, the reduction of main smog pH does not also mean that a kind of like this cigarette is provided, so that the pH value of the main smog that it produced is lower than 4.5 units widely.

Cigarette between the operating period, the existence of organic acid (producing owing to nicotine/organic acid salt decomposes) causes the decline of main smog pH, and drop-out value depends on and mixes organic acid amount and kind in the cigarette.Therefore, certain coordination, combination soft or local flavor reach the peak to send the strong tobacco flavor of smoker, intensity and pleasant sensation to.This local flavor enhancing characteristic is diluted for air height, or " ultra-low tar " cigarette is desirable especially.

Main smog pH value is subjected to influence of various factors.For example, the pH value of cigarette master smog can be subjected to the influence such as following factors: the type of used tobacco material or smoking mixture material, the type (for example volumetric expansion tobacco or homogeneous tobacco) of processing tobacco, the configuration of cigarette (for example circumference of filter fiber material, air dilute strength, cigarette, the kind of lapping etc.), the suction of cigarette, spray mode, and other these class factors.

When cigarette of the present invention is aspirated under the FTC condition, generally send about 0.2 millimeter to 3.5 milligrams nicotine, in about 0.3 milligram to 2.5 milligrams scope of being everlasting, more frequent is in about 0.4 milligram to 1.5 milligrams scope.In general, the ratio of the FTC of cigarette of the present invention " tar " and FTC nicotine is approximately less than 12, and usually approximately less than 9, frequent is approximately less than 7, in some cases approximately less than 5.The FTC of the present invention's cigarette " tar " is everlasting with the ratio of FTC nicotine in about scope of 3 to 6.Generally speaking, be mixed with the cigarette of nicotine/acylate, wherein the ratio of FTC " tar " and FTC nicotine can hang down than the corresponding proportion of the similar cigarette of not mixing salt additives and reach 80%.

The example that below provides is in order to the invention will be further described, and should not think its scope is limited.Unless indicate separately, all umbers and percentage number average are by weight.

Example 1

Prepare the salt that nicotine and levulic acid are formed with following method:

1, add about 350 gram 1-nicotine [Kidak Laboratory Chemicals in 000 milliliter of round-bottomed flask, Eastman Kodak Co. (the Catalogue No.52 that produces, P.366, Chemical No.1124973)], in 1-nicotine, add 10 gram NaOH balls then.Flask is equipped with heating tube, and is equipped with magnetic stirring bar, is used for nicotine solution is stirred.With filling the Todd post of glass helices nicotine is carried out vacuum distillation.Be about in reflux ratio under 10: 1 the condition, collect pressure and be temperature under 10 millimetress of mercury and be 97 ℃ to 98 ℃ cut.The cut of gained is the water transparence.Be used to prepare the salt of 1-nicotine/levulic acid thus with the nicotine of vacuum distillation technique purifying.

69.6 gram (0.6 mole) levulic acids are added in 500 milliliters of round-bottomed flasks that magnetic stirring bar and heating jacket are housed.With common electromagnetic mixing apparatus stripping propionyl acetate.Propionyl acetate system buys from Aldrich chemical company (Catalogue No.1984-85, P.672, Compound No.L200-9), is not further purified before the use.Levulic acid is heated to about 50 ℃, making it to become liquid state, and the liquefaction component is stirred.In 20 fens clock times, drip 32.4 gram (0.2 mole) purifying 1-nicotine to the liquefaction levulic acid.Preferably nicotine is placed organic acid,, impel the generation of salt by this so that a superacid environment to be provided for it.Generate the thick substances of about 100 gram yellow transparent thus.With above-mentioned product at the blanket of nitrogen lower seal in glass ampule.

Product is 1-levulinic acid nicotine (determining with infra-red sepectrometry), wherein nicotine is 1 with the ratio of levulic acid: 3(determines with following method: carry out earlier destructive distillation in 10% sodium hydrate aqueous solution, then with the isopropyl alcohol extraction, and with gas chromatography nicotine is analyzed).This salt roughly has the structure that Figure 13 summarized in the Perfetti list of references of above mentioning.

Be mixed with the cigarette of different content levulic acid 1-nicotine salt with following method preparation.

Be about 99 millimeters, the about 24.8 millimeters cigarette of circumference has the tobacco rod of 68 millimeters long and the filter tip of 31 millimeters long.Tobacco rod comprises the pipe tobacco casting resin of heavily about 0.74 gram, in the cigarette paper that latter's winding up is sold on market (No. 754 cigarette paper that Ecusta company produces).Filter tip system adopts common cigarette filter production technology, (every filament is 2.7 daniers by the filament of cellulose acetate, amount to 48,000 daniers) and the filter tip coil paper (CORESTA porosity) of breathing freely with 26,000 centimeters/minute make.The straight butt joint of tobacco rod and filter tip head and the tail, and be that the packet header paper of 3135 ml/min is fixed together with the CORESTA porosity.Packet header paper is bonded and fixed at the adjacent part of filter tip and tobacco rod, and 3 mm length places of filter-tip total length of winding up and tobacco rod.Described cigarette is used Pilot cigarette machine (Hauni-Werke Korber ﹠amp; Co.KG. make) produce.With a circle eyelet of mechanical means perforation round on the face of cylinder of cigarette with terminal about 13 millimeters places of mouthful contact position, so distribution eyelet to cause the air dilution of cigarette be 50%.The cigarette that Sheng Chans is called 1,2,3 and the C-1 sample thus, corresponds respectively to make every kind of tobacco sample that cigarette is used.

The tobacco material that is used to prepare tobacco rod is tied to form the tow shape that per inch is cut 32 cuttves approximately.Initial tobacco material package is drawn together the mixture of being made up of about 9% Chinese cabbage pipe tobacco, about 41% baking pipe tobacco, about 32% homogeneous tobacco material and about 18% Far East pipe tobacco.This mixture is with mixing its interior glycerine and the watery thing blending of spices.

Provide 4 batches of pipe tobacco compounds altogether, every batch of heavy 1,520 gram.First compound restrains levulic acid 1-nicotine additive treating with 20; Second batch of usefulness 60 gram levulic acid 1-nicotine additive treating; The 3rd batch of usefulness 100 gram levulic acid 1-nicotine additive treating; And the 4th batch without levulic acid 1-nicotine additive treating, is the purpose that is used for comparison.

With portamist levulic acid 1-nicotine additive (water is 1: 1 with the ratio that adds agent) is applied in the pipe tobacco with Sprayable.

Above-mentioned 4 batches of compounds place the polybag of sealing separately respectively, and deposit under 70 °F 2 days.Then these 4 batches of compounds are mixed mutually with the 480 gram pipe tobacco compounds that comprise the expanded Chinese cabbage pipe tobacco of about 75 parts of volumes and about 25 parts of expanded baking pipe tobaccos of volume respectively.Utilize mixing drum that the expanded pipe tobacco compound of volume is added in each batch of material then,, make its moisture be about 12% to 13% to obtain uniform compound.The compound that is provided by first tobacco material that is produced contains the about 1% levulic acid 1-nicotine salt (weight with the tobacco material adjustment is benchmark, and is as follows) that is applied in it, is called sample No. 1.The mixture that is provided by second batch of tobacco material that is produced contains the levulic acid 1-nicotine salt that is applied to about 3% in it, is called sample No. 2.The mixture that is provided by the 3rd batch of tobacco material that is produced contains the about 5% levulic acid 1-nicotine salt that is applied in it, and is called sample No. 3.And the compound that is provided by the 4th batch of tobacco material of gained is handled with levulic acid 1-nicotine salt, only supplies relatively usefulness, is referred to as the C-1 sample.

Various cigarettes all supply suction under the FTC condition.Table 1 provides the following data of each sample: (1) FTC " tar ", FTC nicotine and FTC carbon monoxide; (2) ratio of " tar "/nicotine; (3) nicotine content in the cigarette; (4) aerosol spraying number of times; (5) the pH value of main smog.

* not sample of the present invention.

Annotate the 1:FTC condition and mean in 58 seconds the smouldering in every interval aerosol spraying 2 seconds (35 milliliters of aerosol spraying cumulative volumes).

Annotate 2: " tar "/nicotine means by the FTC " tar " of cigarette release and the ratio of FTC nicotine.

Annotate 3: total nicotine means the total content (that is being present in nicotine in the cigarette via various sources, is that the dry weight with the tobacco material is a benchmark) of nicotine.List of references referring to Harvey mentioned above and colleague thereof.

Annotate 4: the average aerosol spraying number of times of every the cigarette that is provided under FTC smoking condition is provided the aerosol spraying number of times.

Annotate 5: the pH value system of cigarette measures with the technology described in the people's such as Sensabaugh that above mention the list of references.The minimum of each shown cigarette and maximum pH value are minimum and the Computation of Maximal Waiting mean value of every cigarette through each aerosol spraying of 8 aerosol spraying gained.

Data in the table 1 show that along with the increase of levulic acid 1-nicotine content in the cigarette, the nicotine content of all kinds of cigarettes and FTC nicotine value also improve thereupon.In addition, along with the increase of levulic acid 1-nicotine content in the sample, FTC " tar 1 " reduces with the ratio of nicotine." tar " burst size, carbon monoxide burst size and the aerosol spraying number of times of all kinds of cigarettes are comparatively approaching.And total smog pH value of sample of the present invention (for example 1-3 sample) is lower than the sample (being the C-1 sample) of the salt of no external source nicotine/organic acid.

For 2,3 and the evaluation of the organ pipe sensory property of C-1 sample show that the cigarette (i.e. No. 3 samples) of containing 5% salt additives approximately has higher effect and easy property suitable for reading than the cigarette that does not add salt additives (being the C-1 sample), and lower sour and astringent property.The FTC nicotine content of No. 2 samples obviously increases than the C-1 sample, but the organ sensation performance of its sour and astringent property and total taste aspect compares with control sample, there is no marked difference.Therefore, the levulinic acid nicotine additive provides the lower of a kind of FTC " tar " and FTC nicotine, and the cigarette of (that is not too puckery mouthful) easily suitable for reading.

Example 2

The cigarette that is mixed with different content levulic acid 1-nicotine is provided with following method.

Be about 84 millimeters, the cigarette that Zhou Changyue is 24.85 millimeters has the tobacco rod of 57 millimeters long and the filter tip of 27 millimeters long.Tobacco rod comprises the pipe tobacco that charging quantity is about 0.49 gram, and latter's winding up is in commercially available No. 854 cigarette paper (Ecusta company product).Filter tip system adopts common filter production technology, is made by the filament (every 2.1 denier, total Denier is 48000) of cellulose acetate.The straight butt joint of tobacco rod and filter tip head and the tail, and be fixed together with air-locked packet header paper.Packet header paper system be bonded and fixed at filter tip and tobacco rod in abutting connection with the position.The tobacco rod of the filter-tip total length of packet header material winding up and about 3 millimeters long.Described cigarette " the Hauni-Werke Korber ﹠amp of system; The Pilot cigarette machine preparation of .Co.KG. " making.One circle laser eyelet is along the circle distribution from the terminal about 13 millimeters places of cigarette and mouthful contact position.Eyelet runs through packet header paper and filter tip coil paper, is usefulness " Hauni-Werke Korber ﹠amp; The laboratory laser beam perforation machine punching of .Co.KG. " making.The cigarette of perforation has 75% air dilution.Zhi Bei cigarette is called 4,5,6 and the C-2 sample thus, corresponds respectively to the used tobacco material samples of the various cigarettes of preparation.

The tobacco material that is used to prepare tobacco rod is into per inch and cuts tow form about 32 cuttves.Initial tobacco material package is drawn together the compound of being made up of about 43% burley, about 6% baking tobacco, about 19% homogeneous tobacco material and about 32% Turkish tobacco.Above-mentioned compound is with mixing its interior glycerine and watery thing blending of spices.

Prepare four batches of pipe tobacco compounds, the amount of each batch is 940 grams.First compound restrains acetoacetate 1-nicotine additive treating with 60; Second batch of usefulness 140 gram levulic acid 1-nicotine additive treating; The 3rd batch of usefulness 200 gram levulic acid 1-nicotine additive treating; And the 4th batch need not above-mentioned additive treating, only for relatively using.

With portamist levulic acid 1-nicotine additive (ratio that is made into water and additive is 1: 1 a mixture) is applied in the pipe tobacco with spray pattern.

These four batches of compounds are placed in the sealed plastic bag respectively separately, and preserve 2 days under 70 temperature.Then each batch of material and about 1,060 being restrained the pipe tobacco compound of being made up of about 35 parts of expanded burleys of volume and the expanded baking of about 65 parts of volumes tobacco mixes.With mixing drum the expanded pipe tobacco compound of volume is added in each batch of material, with the compound that is uniformly mixed, the water content of this compound is about 12% to 13%.What produced expects that by first tobacco the compound that provides contains the about 3% levulic acid 1-nicotine salt (expecting that with tobacco adjusted weight is benchmark, as follows) that is applied in it and is referred to as sample No. 4.The compound that is provided by second batch of tobacco material that is produced contains the levulic acid 1-nicotine salt that is applied to about 7% in it, is referred to as sample No. 5.The compound that is provided by the 3rd batch of tobacco material of gained contains the levulic acid 1-nicotine salt that is applied to about 10% in it, is called sample No. 6.And the compound that is provided by the 4th batch of tobacco material of gained is without levulic acid 1-nicotine salt additive treating, and only the relatively usefulness of confession is called the C-2 sample.

For comparison purpose, the special C-3 sample that is equipped with.This sample is by nicotine is added in the cigarette that is called the C-2 sample.Specifically, be mixture injection cigarette, so that the nicotine content in the cigarette reaches about 3.92% with 30 milligrams of 1: 1 ethanol and 1-nicotine (85% purity).Nicotine/alcohol mixture system mixes in the tobacco rod with following method: syringe is inserted the firing tip of tobacco rod, yet this tobacco rod is injected with said mixture in the limit, syringe is extracted on the limit at leisure out.

No. 7 sample is by foregoing method, about 10 milligrams above-mentioned 1: 1 ethanol-nicotine mixture is injected the cigarette that is called No. 6 samples with syringe.The cigarette that provides had thus both been contained the levulinic acid nicotine additive, contained external source nicotine additive again.

Various cigarettes all supply suction under the FTC condition.Table 2 provides following data: (1) FTC " tar ", FTC nicotine and FTC carbon monoxide; (2) ratio of " tar "/nicotine; (3) nicotine content and (4) 4-6 number in the cigarette, and the number of the aerosol spraying of C-2 sample.In addition, give the main smog pH value of 4-6, C-2 and C-3 sample in the table.

* not example of the present invention.

Annotate 1-4:-respectively referring to the footnote 1-4 in the table 1.

Annotating 5:-smog pH value system measures with reference to the technology described in the document with people such as Sensabaugh mentioned above.The minimum pH value of each given cigarette and maximum pH value are water number and the Computation of Maximal Waiting average by each aerosol spraying of every cigarette several times aerosol spraying gained.For 4,5 and the C-2 sample, the aerosol spraying number of times that is used for calculating pH mean value is 7.And the respective value of No. 6 and C-3 sample is 6.

The data of table 2 show that along with the increase of levulic acid 1-nicotine content in the cigarette, its nicotine content and FTC nicotine value also increase thereupon.In addition, the ratio of FTC " tar " and nicotine content reduces along with the increase of levulic acid 1-nicotine content in the sample." tar " burst size, carbon monoxide burst size and the aerosol spraying of all kinds of cigarettes time number average is very close.And the pH value of total smog of sample of the present invention (being the 4-6 sample) is lower than the respective value of the sample (being the C-2 sample) of the salt that does not contain external source nicotine/organic acid.In addition, total smog pH value of C-3 sample is far above other any samples.

To 5,6 and the evaluation of the organ sensation performance of C-2 sample show that the cigarette (i.e. No. 6 samples) of containing 10% left and right sides salt additives has higher effect, easy property suitable for reading than the cigarette that does not contain salt additives (being the C-2 sample), and acerbity is few.All cigarettes of being tasted all provide good to eat tobacco flavor, do not find realizable chemical peculiar smell or non-cigarette flavor.Surprisingly, though the FTC nicotine content of No. 5 samples than C-2 sample height, the former does not all have significant difference with control sample in the organ sensation aspect effect, easy property suitable for reading, sour and astringent property and the total taste.Extremely puckery mouthful of C-3 sample and unhappy.Yet although No. 7 samples are mixed with the external source nicotine of high level, it unexpectedly demonstrates good to eat smoke easily suitable for reading.

Example 3

Provide with following method and to contain than the high-nicotine amount, and be mixed with the cigarettes of different amount levulic acids, be about 84 millimeters, circumference is about 24.8 millimeters cigarette and has the tobacco rod of 57 millimeters long and the filter tip of 27 millimeters long.Tobacco rod comprises the pipe tobacco inserts of about 0.76 gram, and latter's winding up is in commercially available No. 854 cigarette paper (Ecusta company product).Filter tip system adopts common cigarette filter tip manufacturing technology, is made by the gas permeability filter tip coil paper that the filament (every 2.1 denier, total Denier is 48,000) and the CORESTA porosity of cellulose acetate is 26,000 centimeters/minute.Tobacco rod and filter tip head and the tail dock as the crow flies, and are fixed together with porous (breathing freely) packet header paper.Packet header paper be bonded and fixed at filter tip and tobacco rod in abutting connection with the position.About 4 mm lengths of filter-tip total length of packet header material winding up and tobacco rod.Aforesaid cigarette is used " Hauni-Werke Korber ﹠amp; .Co.KG. " the Pilot cigarette machine of making is produced.The eyelet of one circle machine drilling along from cigarette with the circumferential ring at terminal about 13 millimeters places, mouthful contact position around.So the eyelet that distributes makes cigarette obtain 75% air dilution.Be called 8,9,10 and the C-4 sample with the cigarette of method for preparing, correspond respectively to the used tobacco material samples of the various cigarettes of preparation.

The tobacco that is used to prepare tobacco rod is expected into per inch and cuts tow form about 32 cuttves.Initial tobacco material package is drawn together the compound of being made up of following ingredients: the burley of (1) about 40%, its nicotine content are about 5%; (2) about 18% baking tobacco, its nicotine content is about 3.5%; (3) about 30% homogeneous tobacco material, its nicotine content is about 0.5%; And (4) about 12% Far East tobacco compound, its nicotine content is about 0.9%.Above-mentioned compound is with being applied to its interior glycerine and the watery thing blending of spices.

Prepare four batches of pipe tobacco compounds, every batch 2,000 gram (with dry weight basis).First batch of material restrains the levulic acid additive treating with 120; Second batch of material restrains the levulic acid additive treating with 280; The 3rd batch of material restrains identical additive treating with 400: and the 4th batch of material is without the levulic acid additive treating, only for relatively using.

With portamist the form of mixtures of levulic acid additive with water and additive is applied in the pipe tobacco.Adjust the water yield in water/additive agent mixture, so that the water content of final pipe tobacco is about 15%.

Four batch of materials are put into sealed plastic bag respectively, and under 70 temperature, preserved 2 days.Then each batch of material and about 2,000 gram (with dry weight basis) tobacco mixture are mixed, the latter comprises: (1) about 35 parts of expanded burleys of volume, and its nicotine content is about 4%; (2) the about 65 parts of expanded baking of volume tobaccos, its nicotine content is about 4%.Utilize mixing drum that the expanded pipe tobacco compound of volume is added in every batch of material, with the compound that is uniformly mixed, its moisture is between 12% to 13%.

The compound that is provided by first tobacco material that is produced contains the levulic acid (dry weight with pipe tobacco is a benchmark, down together) that is applied to 3% in it approximately, is referred to as sample No. 8.The compound that is provided by second batch of tobacco material that is produced contains about 3% levulic acid that is applied in it, is referred to as sample No. 9.What produced contains the levulic acid that is applied to 10% in it by the 3rd batch of compound that tobacco material provides, and is referred to as sample No. 10.Gained by the 4th batch of compound that tobacco material provides, do not use the levulic acid additive treating, only supply relatively usefulness, be called the C-4 sample

Various cigarettes all supply suction under the FTC condition.Table 3 provides the following data of each sample: the nicotine content of (1) each compound; (2) FTC " tar ", FTC nicotine and FTC carbon monoxide; (3) ratio of " tar "/nicotine; (4) aerosol spraying number of times; (5) the pH value of main smog.

* not example of the present invention.

Annotate 1-4: please respectively referring to the footnote 1-4 in the table 1.

Annotate 5: smog pH value system measures with reference to the technology described in the document with people such as Sensabaugh mentioned above.The minimum of the every kind of cigarette that provides in the table and maximum pH value are to shoot out the minimum of a value and the Computation of Maximal Waiting mean value of 7 resulting each aerosol sprayings according to every cigarette.

Annotate 6: the smog pH value of " 20 chimneys " (" twenty port ") of 20 cigarette master smog that the technology described in smog pH mean value system's employing " Harris et al; 32nd Tob.Chem.Res.Conf., (1987) " records.

The data of table 3 show, by the made various cigarettes of the high pipe tobacco of nicotine content (that is mixing nicotine total amount of about 3%), their FTC " tar ", nicotine and carbon monoxide burst size, and the ratio and the aerosol spraying number of times of FTC " tar " and FTC nicotine are all more close.Yet, if with control sample (be the C-4 sample, it does not contain the levulic acid additive) relatively, cigarette of the present invention (the 8-10 sample that promptly contains the levulic acid additive) shows lower main smog and the smog pH mean value of shooing out.In addition, data also show in the table, and the smog pH value of cigarette of the present invention obviously reduces along with the increase of levulic acid additive level.The decline of smog pH value is the sign that hydrogen ion concentration greatly increases in the tobacco smoke in the sample of the present invention.This increase of hydrogen ion concentration is enough to change the smog quality that can cause the organ pipe sensation in main smog.

Sample is carried out organoleptic evaluation show, the present invention's cigarette is easily suitable for reading when aspirating, and the very puckery mouth of control sample.The smoke of No. 8 and No. 9 samples is all softer.The present invention's cigarette produces gratifying tobacco flavor, intensity and suction pleasant sensation.And control sample causes thus that very towards nose (strong) keen sensation is unhappy.

Example 4

The cigarette that is mixed with the different content levulic acid is provided with following method.

Be about 84 millimeters, the cigarette that Zhou Changyue is 24.85 millimeters has the tobacco rod of 57 millimeters long and the filter tip of 27 millimeters long.Tobacco rod comprises that charging quantity is about the pipe tobacco of 0.82 gram, and latter's winding up is in No. 856 commercially available cigarette paper (Ecusta company product).Filter tip system adopts common cigarette filter tip manufacturing technology, the gas permeability filter tip coil paper that is about 26,000 centimeters/minute by the filament (every 2.7 denier adds up to 48,0000 deniers) and the CORESTA porosity of cellulose acetate.The straight butt joint of tobacco rod and filter tip head and the tail, and be fixed together with air-locked packet header paper basically.This packet header paper be bonded and fixed at filter tip and tobacco rod in abutting connection with the position.Filter-tip total length of packet header material winding up and pipe tobacco treaty 4 mm length places.Described cigarette " the Hauni-Werke Korber ﹠amp of system; Co.KG. " the Pilot cigarette machine of Zhi Zaoing is prepared.One circle laser eyelet along from cigarette with the circumferential ring at terminal about 13 millimeters places of mouth contact position around.The eyelet generation air dilution that so distributes is 50% cigarette.Zhi Bei cigarette is called 11,12,13 and the C-5 sample thus, corresponds respectively to the used tobacco material samples of each cigarette of preparation.

The tobacco material that is used to prepare tobacco rod is tied to form the tow form that per inch is cut 32 cuttves approximately.Initial tobacco material package is drawn together: about 31% burley, its nicotine content are about 5%; (2) about 20% baking tobacco, its nicotine content is about 3.5%; (3) about 31% homogeneous tobacco material, its nicotine content about 0.5%; (4) about 18% east tobacco compound, its nicotine content is about 0.9%.Above-mentioned compound is with being applied to its interior glycerine and the watery thing blending of spices.

Provide four batches of pipe tobacco compounds, every batch of heavy 3,120 grams (with dry weight basis).First batch of material restrains the levulic acid additive treating with 40; Second batch of usefulness 120 gram levulic acid additive treating; The 3rd batch of same additive treating of usefulness 200 grams; And the 4th batch handled without levulic acid fully, only for relatively using.

With portamist levulic acid is sprayed in the pipe tobacco with water and additive agent mixture form.The moisture that the water yield in water/additive agent mixture is adjusted in the final pipe tobacco reaches 15% approximately.

Above-mentioned four batch of materials are separately respectively at placing sealed plastic bag, and preserve 2 days down at 70 °F.Then every batch of material and 880 grams (with dry weight basis) are about 4% about 35 parts the expanded burley of volume and (2) nicotine content is about the pipe tobacco compound that 4% the expanded baking of about 65 parts volume tobacco formed and mixes by (1) nicotine content.Utilize mixing drum that the expanded pipe tobacco compound of volume is added in every batch of material, be about mixed uniformly compound between 12% to 13% to obtain moisture.

The compound that is provided by first tobacco material that is produced contains the levulic acid (with the tobacco dry weight is benchmark, down together) that adds 1% in it to approximately, is referred to as sample No. 11.The compound that is provided by second batch of tobacco material that is produced contains the levulic acid that adds 3% in it to approximately, is referred to as sample No. 12.The compound that is provided by the 3rd batch of tobacco material that is produced contains 5% levulic acid that adds in it approximately, is called sample No. 13.The compound levulic acid additive treating that is provided by the 4th batch of tobacco material of gained only supplies relatively usefulness, is called the C-5 sample.

Various cigarettes all supply suction under the FTC condition.Table 4 provides the following data of each sample: the nicotine content of (1) each compound; (2) numerical value of FTC " tar ", FTC nicotine and FTC carbon monoxide; (3) ratio of " tar "/nicotine; (4) the pH value of aerosol spraying number of times and (5) main smog.

* not sample of the present invention.

Annotate 1-4: respectively referring to the footnote 1-4 in the table 1.

Annotate 5: the pH value system of smog measures with reference to the technology described in the document with people such as Sensabaugh mentioned above.The minimum of each given cigarette and maximum pH value are minimum and the Computation of Maximal Waiting mean value by 7 resulting each aerosol sprayings of every cigarette aerosol spraying.

Annotate 6: the smog pH value of " 20 chimney " of 20 cigarette smokes that smog pH mean value system records with the described technology of above mentioning of people such as Harris.

The data of table 4 show to have the high-nicotine content pipe tobacco various cigarettes of (that is mixing the nicotine total content greater than 2.5%), and its FTC " tar ", nicotine and carbon monoxide burst size are all approaching with contrast cigarette.Various cigarettes also demonstrate the ratio and the aerosol spraying number of times of close FTC " tar " and nicotine.Yet from comparing with the control sample C-5 sample of levulic acid additive (that is do not contain), the present invention's cigarette (11 to No. 13 samples that promptly contain the levulic acid additive) has lower smoke belching and average smog pH value.

The organoleptic evaluation of sample shows that the present invention's cigarette cigarette is easily suitable for reading, and the very puckery mouth of check experiment.The smoke of 12 and No. 13 samples is all softer.Cigarette of the present invention produces gratifying tobacco flavor, intensity and suction pleasant sensation.And control sample very strong provide thus feel unhappy too by force.

Example 5

The cigarette that is mixed with different amount levulic acids is provided with following method.

Be about 84 millimeters, the cigarette that Zhou Changyue is 24.85 millimeters has the tobacco rod of 57 millimeters long and the filter tip of 27 millimeters long.Tobacco rod comprises the pipe tobacco of 0.82 gram charging quantity, and latter's winding up is in commercially available No. 856 cigarette paper that Ecusta company produces.Filter tip system adopts common cigarette filter production technology, is made by the gas permeability filter tip coil paper that the filament (every 2.7 denier adds up to 48,000 deniers) and the CORESTA porosity of cellulose acetate is about 26,000 centimeters/minute.The straight butt joint of tobacco rod and filter tip head and the tail, and be fixed together with air-locked packet header paper basically.Packet header paper is bonded and fixed at the neighboring region of filter tip and tobacco rod.About 4 mm lengths of filter-tip total length of packet header material winding up and tobacco rod.Described cigarette " the Hauni-Werke Korber ﹠amp of system; The Pilot cigarette machine preparation of Co.KG. " making.Zhi Bei cigarette is called 14,15,16 and the C-6 sample thus, corresponds respectively to the used filter material sample of each cigarette of preparation.

Be used for preparing 14,15,16 identical with 11,12,13 respectively with the used filter material of C-5 sample with the filtering material of C-6 sample tobacco rod.

Various cigarettes are all aspirated under the FTC condition.Table 4 provides the following data of each sample: the nicotine content of (1) each compound; (2) FTC " tar " and FTC nicotine; (3) ratio of " tar "/nicotine; (4) aerosol spraying number of times; (5) main smog pH value.

* not sample of the present invention.

Annotate 1-4: respectively referring to the footnote 1-4 in the table 1.

Annotate 5: the smog pH value of " 20 chimney " of 20 cigarette master smog that the described technology of people such as Harris that the mean value system of smog pH uses above to be provided is determined.

The data of table 5 show to have the present invention's of high-nicotine content pipe tobacco (promptly mixing the nicotine total amount greater than 2.5%) various cigarettes, and its FTC " tar " and nicotine burst size are close with contrast cigarette.The ratio of the FTC of each cigarette " tar " and nicotine and the number of aerosol spraying are also very approaching.Yet, compare (the C-6 sample that does not promptly contain the levulic acid additive) with control sample, the smog mean ph value of the present invention's cigarette (the 14-16 sample that promptly contains the levulic acid additive) is lower.

Organoleptic evaluation to sample shows that cigarette of the present invention is easily suitable for reading, and the very puckery mouth of control sample.The smoke of 15 and No. 16 samples is all softer.The present invention's cigarette produces gratifying tobacco flavor, intensity and suction pleasant sensation.And control sample is very strong, consequently feels unhappy too by force.

Claims (19)

1, a kind of cigarette of containing the aspirated material of winding up in outer covering material is characterized in that it comprises: (1) content is approximately greater than 2% nicotine (is benchmark with the dry weight that can aspirate material, down with); (2) mix levulic acid in it with disassociation or non-disassociation form, its incorporation is approximately greater than 1%.

2, cigarette according to claim 1 is characterized in that the incorporation of said levulic acid is benchmark greater than 2%(with the dry weight that can aspirate material).

3, cigarette according to claim 1 is characterized in that the incorporation of said levulic acid is benchmark greater than 3%(with the dry weight that can aspirate material).

4, cigarette according to claim 1 is characterized in that the content of said nicotine is benchmark greater than 2.25%(with the dry weight that can aspirate material).

5, cigarette according to claim 4 is characterized in that the incorporation of said levulic acid is benchmark greater than 2%(with the dry weight that can aspirate material).

6, cigarette according to claim 4 is characterized in that the incorporation of said levulic acid is benchmark greater than 3%(with the dry weight that can aspirate material).

7, cigarette according to claim 1 is characterized in that the content of said nicotine is benchmark greater than 2.5%(with the dry weight that can aspirate material).

8, cigarette according to claim 7 is characterized in that the incorporation of said levulic acid is benchmark greater than 2%(with the dry weight that can aspirate material).

9, cigarette according to claim 7 is characterized in that the incorporation of said levulic acid is benchmark greater than 3%(with the dry weight that can aspirate material).

10, cigarette according to claim 1 is characterized in that the content of said nicotine is benchmark greater than 3%(with the dry weight that can aspirate material).

11, cigarette according to claim 10 is characterized in that the incorporation of said levulic acid is benchmark greater than 2%(with the dry weight that can aspirate material).

12, cigarette according to claim 10 is characterized in that the incorporation of said levulic acid is benchmark greater than 3%(with the dry weight that can aspirate material).

13,, it is characterized in that said levulic acid is to exist with non-dissociated form according to the described cigarette of claim 1-12.

14,, it is characterized in that levulic acid at least a portion of being provided exists with the form of levulinic acid nicotine according to the described cigarette of claim 1-12.

15, according to the described cigarette of claim 1-12, the ratio that it is characterized in that FTC in this cigarette " tar " and FTC nicotine is less than 7.

16, according to the described cigarette of claim 1-12, the ratio that it is characterized in that FTC in this cigarette " tar " and FTC nicotine is in 3 to 6 scope.

17,, it is characterized in that said the suction expects it is a kind of smoking mixture material according to the described cigarette of claim 1-12.

18,, it is characterized in that this cigarette comprises a filter tip, and at least a portion levulic acid is present in the filter tip according to the described cigarette of claim 1-12.

19, a kind of levulinic acid nicotine that produces by synthetic method.