WO2024024080A1 - Flavor ingredient, method for producing same, and combustion-type flavor inhaler - Google Patents

Flavor ingredient, method for producing same, and combustion-type flavor inhaler Download PDF

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Publication number
WO2024024080A1
WO2024024080A1 PCT/JP2022/029279 JP2022029279W WO2024024080A1 WO 2024024080 A1 WO2024024080 A1 WO 2024024080A1 JP 2022029279 W JP2022029279 W JP 2022029279W WO 2024024080 A1 WO2024024080 A1 WO 2024024080A1
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Prior art keywords
flavor
tobacco material
tobacco
alcohol
producing
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PCT/JP2022/029279
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French (fr)
Japanese (ja)
Inventor
泰基 村上
啓佑 佐々木
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日本たばこ産業株式会社
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Priority to PCT/JP2022/029279 priority Critical patent/WO2024024080A1/en
Publication of WO2024024080A1 publication Critical patent/WO2024024080A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning

Definitions

  • the present invention relates to a flavor material, a method for producing the same, and a combustion type flavor inhaler.
  • Benzpyrene is one of the health-concerning substances produced during incomplete combustion of carbon compounds, and it is desired to reduce the amount produced.
  • Patent Document 1 discloses that a tobacco material containing benzpyrene is pyrolyzed at at least 400° C. to produce charcoal and steam products, and the steam products are condensed and collected. It is stated that a small amount of tobacco-derived pyrolysis oil can be obtained.
  • An object of the present invention is to provide a flavor material that produces a small amount of benzpyrene when burned and can supply a sufficient amount of flavor components.
  • the present invention includes the following embodiments.
  • a method for producing a flavoring material including:
  • the tobacco material Before the step of obtaining the flavor liquid, the tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least a part of the alcohol is extracted from the mixture.
  • the amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 100 ng/gWB or less, according to any one of [1] to [8]. Method for producing flavoring materials.
  • the amount of nicotine contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 2 mg/gWB or more, according to any one of [1] to [9].
  • a flavoring material containing carbide of tobacco material The amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 100 ng/g WB or less, and the amount of nicotine contained in the smoke is 2 mg/g WB or more.
  • a flavoring material is 100 ng/g WB or less, and the amount of nicotine contained in the smoke is 2 mg/g WB or more.
  • a combustion type flavor inhaler comprising the flavor material according to [11] or [12].
  • the method for producing a flavor material includes the following steps.
  • a process of heating the tobacco material at 150 to 300°C and collecting the generated vapor to obtain a flavor liquid (hereinafter also referred to as "low-temperature heating process”); heating the tobacco material in an atmosphere with an oxygen concentration of 9% or less.
  • a step of heating the residue at 500 to 1200°C to obtain a charred product of the tobacco material (hereinafter also referred to as “high-temperature heating step”); a step of pouring the flavor liquid back onto the charred material of the tobacco material (hereinafter referred to as "sprinkling”) (Also referred to as "returning process.”)
  • a low-temperature heating step is first performed to selectively volatilize flavor components such as nicotine and vanillin from the tobacco material and recover them as a flavor liquid.
  • flavor components such as nicotine and vanillin
  • the residue of the tobacco material is subjected to a high temperature heating step to generate and vaporize benzpyrene.
  • the residue of the tobacco material itself is carbonized and becomes carbide because it is heated at high temperature in a low oxygen atmosphere.
  • the flavor liquid is poured back onto the carbonized material of the tobacco material, thereby returning the flavor components to the carbonized material of the tobacco material. Therefore, in the method according to the present embodiment, it is possible to efficiently produce a flavor material that contains a sufficient amount of flavor components and produces a small amount of benzpyrene even when burned.
  • a tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least part of the alcohol is extracted from the mixture. It is preferable to further include a step of obtaining a compression molded article of tobacco material by removing (hereinafter also referred to as "compression molded article manufacturing step (1)").
  • compression molded article manufacturing step (1) the compression molded body of the tobacco material is heated at 150 to 300° C. in the low temperature heating step, and the generated vapor is collected to obtain a flavor liquid.
  • the method further includes a step of compression molding and removing at least a portion of the alcohol from the mixture to obtain a compression molded product of tobacco material residue (hereinafter also referred to as "compression molded product manufacturing step (2)"). It is preferable.
  • the high temperature heating step involves heating the compression molded product of tobacco material residue at 500 to 1200°C in an atmosphere with an oxygen concentration of 9% or less. , obtaining a carbide of the tobacco material.
  • the residue of the tobacco material is heated to 500 to 1200°C in a low-oxygen atmosphere with an oxygen concentration of 9% or less, so the residue of the tobacco material is carbonized and becomes a carbide, improving shape retention.
  • the carbide is somewhat brittle and easily crumbles.
  • the method according to the present embodiment includes the compression-molded product manufacturing step (1) or (2), before the high-temperature heating step, an alcohol having 2 to 7 carbon atoms is added to the tobacco material or the residue of the tobacco material, and compression molding is performed. do. Since the alcohol functions as a binder, a compression molded product having sufficient strength can be obtained.
  • the compression molded product obtained since the alcohol is subsequently removed, the compression molded product obtained has sufficient strength and can provide a good flavor without the influence of alcohol.
  • the compression molded product is subjected to a high temperature heating step, the resulting carbide of the tobacco material (compression molded product) has higher shape retention and hardness. For example, even when the carbide is rolled up with paper to form a tobacco rod, its shape is sufficiently maintained and it is easy to roll up.
  • the method according to the present embodiment includes a compression molded body manufacturing process (1), a low temperature heating process, a compression molded body manufacturing process (2), a high temperature heating process, It may also include steps other than the reversing step.
  • the method according to this embodiment can optionally include a compression molded body manufacturing step (1).
  • a tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least a portion of the alcohol is removed from the mixture, thereby compression molding the tobacco material. Get a body.
  • This step is performed before the low-temperature heating step described below. By carrying out this step, the strength of the carbide obtained by the high-temperature heating step described below can be improved.
  • tobacco materials include leaf tobacco, and tobacco powder obtained by cutting tobacco leaf veins, trunks, roots, flowers, etc. into powder.
  • the type of leaf tobacco is not particularly limited, and any variety can be used, but examples include yellow tobacco, burley tobacco, native tobacco, orient leaf, and fermented leaves thereof. These tobacco materials may be used alone or in combination of two or more.
  • the average particle diameter of the tobacco material is preferably 100 ⁇ m or less. When the average particle diameter is 100 ⁇ m or less, a compression-molded product that is less deformed over time and has sufficient strength can be obtained.
  • the average particle diameter is more preferably 5 to 80 ⁇ m, even more preferably 10 to 60 ⁇ m, and particularly preferably 20 to 50 ⁇ m. Note that the average particle diameter is measured using a light scattering method.
  • the alcohol has 2 to 7 carbon atoms, preferably 2 to 5 carbon atoms, and more preferably 2 to 3 carbon atoms.
  • the alcohol at least one alcohol selected from the group consisting of ethanol, 2-propanol, and benzyl alcohol is preferred from the viewpoint of obtaining a compression molded product with higher strength, and ethanol is most preferred.
  • 1 to 20 parts by mass of the alcohol be mixed with 100 parts by mass of the tobacco material.
  • 1 part by mass or more of the alcohol By mixing 1 part by mass or more of the alcohol with 100 parts by mass of the tobacco material, a compression molded product having higher strength can be obtained. Further, by mixing 20 parts by mass or less of the alcohol to 100 parts by mass of the tobacco material, compression molding can be easily performed. It is more preferable to mix 2 to 15 parts by weight of the alcohol, and even more preferably 3 to 10 parts by weight, to 100 parts by weight of the tobacco material.
  • cellulose powder or the like may be further added to the tobacco material.
  • the method of mixing the tobacco material with the alcohol is not particularly limited, but it can be mixed using a general mixer such as a V-type mixer, for example.
  • the compression molding machine used for compression molding the obtained mixture is not particularly limited, but for example, a rotary tabletting machine or the like can be used.
  • the compression molding conditions are not particularly limited, it is desirable to perform the molding under a compression pressure of 2 kN or more, for example. At least a portion of the alcohol may be removed by natural drying or the like during compression molding.
  • the shape of the compression molded product obtained by compression molding is not particularly limited, and may be, for example, a tablet shape, a plate shape, a cylindrical shape, a rod shape, a spherical shape, or the like.
  • At least a portion of the alcohol may be removed from the mixture during the compression molding as described above, or from the compression molded body obtained after the compression molding.
  • the removal of at least a portion of the alcohol is carried out at 10-40°C.
  • the temperature at which at least a portion of the alcohol is removed is more preferably 15 to 35°C, and even more preferably 20 to 30°C.
  • At least a portion of the alcohol can be removed by, for example, an electric oven, hot air drying, a tunnel dryer, natural drying, or the like. Further, it is preferable that the alcohol is removed not in a closed space but in an open state. As for the alcohol removal rate, it is preferable that 90% by mass or more of the alcohol contained in the mixture (compression molded body) is removed, more preferably 95% by mass or more is removed, and 99% by mass or more is removed. It is even more preferred that the alcohol be removed, and it is particularly preferred that all alcohol be removed.
  • the tobacco material is heated at 150 to 300°C, and the generated vapor is collected to obtain a flavor liquid.
  • flavor components such as nicotine can be selectively volatilized from the tobacco material and recovered as a flavor liquid.
  • residues of the tobacco material remain.
  • the tobacco material heated at 150 to 300° C. in this step is a compression molded product of the tobacco material.
  • the compression molded body manufacturing process (1) is not carried out, the tobacco material used in the compression molded body manufacturing process (1) can be used as is, and the shape may be in the form of shreds, etc. other than powder. There may be.
  • the heating temperature of the tobacco material is 150 to 300°C.
  • the heating temperature is preferably 170 to 290°C, more preferably 200 to 270°C, even more preferably 230 to 250°C.
  • the heating time for the tobacco material depends on the heating temperature of the tobacco material, but is preferably 20 seconds to 120 minutes, more preferably 5 minutes to 60 minutes.
  • the method for recovering the vapor generated by heating the tobacco material is not particularly limited, but for example, the generated vapor may be cooled and recovered, or the generated vapor may be collected using distilled water, ethanol, hexane, 2-propanol, 1-propanol, propylene glycol, Examples include methods such as passing through a solvent such as glycerin and collecting in the solvent, collecting using an adsorbent, column, filter, etc., and then eluting.
  • the method according to this embodiment can optionally include a compression molded body manufacturing step (2).
  • a compression molded body manufacturing step (2) an alcohol having 2 to 7 carbon atoms is mixed with the residue of the tobacco material to form a mixture, the mixture is compression molded, and at least a part of the alcohol is removed from the mixture, so that the tobacco material is A compression molded body of the residue is obtained.
  • This step is performed after the low-temperature heating step and before the high-temperature heating step described below. By carrying out this step, the strength of the carbide obtained by the high-temperature heating step described below can be improved.
  • the method according to the present embodiment can include either one of compression molded body manufacturing steps (1) and (2).
  • This step is carried out in the same manner as the compression molded body manufacturing step (1) described above, except that instead of the tobacco material, an alcohol having 2 to 7 carbon atoms is mixed with the residue of the tobacco material to form a mixture. be able to.
  • the residue of the tobacco material is heated at 500 to 1200° C. in an atmosphere with an oxygen concentration of 9% or less to obtain a carbide of the tobacco material.
  • benzpyrene is produced and vaporized from the residue of the tobacco material. Since the residue of the tobacco material itself is heated at high temperature in a low oxygen atmosphere, it carbonizes and becomes carbide. Note that when carrying out the compression molded product manufacturing step (1) or (2), the residue of the tobacco material heated at 500 to 1200° C. in this step is a compression molded product of the residue of the tobacco material.
  • the heating of the tobacco material residue is carried out in an atmosphere with an oxygen concentration of 9% or less.
  • an atmosphere with an oxygen concentration of 9% or less By performing high temperature heating in a low oxygen atmosphere with an oxygen concentration of 9% or less, the residue of the tobacco material can be carbonized, and the shape retention and hardness of the residue of the tobacco material are improved. Further, it is possible to prevent the oxidation reaction of the residue of the tobacco material, and it is possible to provide a good flavor when burned during use.
  • the tobacco material residue is heated in an oxygen-free atmosphere (for example, an inert gas atmosphere such as nitrogen or argon).
  • the heating temperature of the tobacco material residue is 500 to 1200°C.
  • the heating temperature is preferably 500 to 1000°C, more preferably 500 to 800°C.
  • the heating time for the tobacco material residue depends on the heating temperature of the tobacco material residue, but is preferably 1 second to 10 hours, more preferably 30 seconds to 1 hour.
  • the char of the tobacco material obtained in this step (the char of the compression molded product of the residue of the tobacco material) measured using a tablet hardness meter.
  • the compressive breaking strength of the wedge-shaped plunger is preferably 5 to 200N. When the compressive breaking strength is 5 N or more, even when the carbide is rolled up with paper or the like to form a tobacco rod, its shape is sufficiently maintained and winding is easy. More preferably, the compressive breaking strength is 10 to 200N. Note that the compressive breaking strength is specifically measured by the method described below.
  • the flavor liquid is poured back onto the carbonized material of the tobacco material.
  • the flavor components previously extracted from the tobacco material can be returned to the carbonized product of the tobacco material. Therefore, it is possible to obtain a flavor material that is a carbonized tobacco material with flavor components returned thereto. Since the flavor material has undergone high-temperature heating (500 to 1200° C.) in a low-oxygen atmosphere, it is carbonized, and even when burned, the amount of benzpyrene produced is small. On the other hand, since the flavor material contains a sufficient amount of flavor components, a sufficient amount of the flavor components are volatilized when burned.
  • the method of applying the flavoring liquid back onto the carbonized tobacco material is not particularly limited.
  • the flavor liquid can be added to and mixed with the charred material of the tobacco material, and the flavor liquid can be soaked into the charred material to reapply the tobacco material. After being applied back, the charred material containing the flavor liquid may be dried.
  • the amount of benzpyrene produced is small, and a sufficient amount of flavor components are supplied.
  • the amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800°C for 10 seconds in an air atmosphere is preferably 100 ng/g WB or less, more preferably 50 ng/g WB or less. .
  • benzpyrene does not need to be included in the smoke.
  • the amount of nicotine contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is preferably 2 mg/g WB or more, more preferably 10 mg/g WB or more.
  • the upper limit of the range of the amount of nicotine is not particularly limited, but can be, for example, 30 mg/g WB or less.
  • the amounts of benzpyrene and nicotine are specifically measured by the following method.
  • the flavoring material is placed in an infrared oven, heated to 800°C, and held at 800°C for 10 seconds while flowing air at a flow rate of 1 L/min.
  • the generated smoke is collected in a Cambridge filter (CF).
  • CF Cambridge filter
  • the CF is immersed in cyclohexane to extract the component.
  • the cyclohexane solution is analyzed by liquid chromatography to determine the content of benzpyrene.
  • the CF is immersed in methanol to extract the component.
  • the methanol solution is analyzed by gas chromatography to quantify the nicotine content.
  • the flavor material according to this embodiment is manufactured by the method for manufacturing a flavor material according to this embodiment described above. Since the flavor material is produced by the method according to the present embodiment, when burned, the amount of benzpyrene produced is small and a sufficient amount of flavor components can be supplied.
  • another flavor material according to the present embodiment is a flavor material containing carbide of tobacco material, and includes benzpyrene contained in smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere.
  • the amount of nicotine is 100 ng/g WB or less, and the amount of nicotine contained in the smoke is 2 mg/g WB or more.
  • the flavor material is preferably manufactured by the method for manufacturing a flavor material according to the present embodiment described above.
  • combustion type flavor inhaler includes the flavor material according to this embodiment. Since the combustion type flavor inhaler includes the flavor material according to the present embodiment, the amount of benzpyrene produced during use is small and a sufficient amount of flavor components can be supplied.
  • the combustion flavor inhaler 1 includes a tobacco rod 2 and a filter segment 3 provided adjacent to the tobacco rod 2.
  • the tobacco rod 2 includes a tobacco filler 4, which is a flavor material according to the present embodiment, and a wrapper 5, such as paper, wrapped around the tobacco filler 4.
  • the tobacco rod 2 and the filter segment 3 are connected by a tipping paper member 6 wound on the tobacco rod 2 and the filter segment 3.
  • the tip paper member 6 may have a ventilation hole in a part of its outer periphery.
  • the number of ventilation holes may be one or more, and for example, 10 to 40 ventilation holes may be formed.
  • the ventilation holes can be arranged in a ring shape around the outer periphery of the chipping paper member 6, for example.
  • the plurality of vent holes may be arranged at substantially regular intervals.
  • the user can obtain the flavor by lighting the tip of the tobacco rod 2, holding the mouth end of the filter segment 3 in his mouth, and inhaling it.
  • the tobacco rod 2 of the combustion type flavor inhaler 1 is filled with the flavor material according to this embodiment, the amount of benzpyrene produced during use is small and a sufficient amount of flavor components can be obtained.
  • MMB Millioni Burley
  • the nicotine content was determined by immersing the CF in methanol to extract the components, and analyzing the resulting methanol solution by gas chromatography. Furthermore, as a control, chopped leaf tobacco that was not heated at 500°C for 5 minutes in a nitrogen atmosphere (not carbonized) was similarly burned at 800°C, and the amounts of benzpyrene and nicotine in the smoke were quantified. The results are shown in Figure 2.
  • Example 1 Shredded leaf tobacco (Malawi Burley (MWB)) was heated at 250° C. for 36 minutes, and the generated vapor was collected by cooling to obtain a flavor liquid. The amount of nicotine contained in the flavor liquid was 17.6 mg. Next, the residue of the shredded leaf tobacco after heating was pulverized to have an average particle size of 30 ⁇ m. 3 parts by mass of ethanol was added to 100 parts by mass of the shredded leaf tobacco residue after pulverization and mixed. The obtained mixture was compressed into a tablet shape using a compression molding machine (trade name: TDP 0, manufactured by LFA Machines Oxford Ltd.). The obtained compression molded product was dried at 20° C. for 2 days to remove ethanol contained in the compression molded product. Thereafter, the compression molded body was carbonized by heating at 500° C. for 5 minutes in a nitrogen atmosphere to obtain a carbide.
  • the carbide was placed in an infrared furnace, heated to 800°C, and held at 800°C for 10 seconds while flowing air at a flow rate of 1 L/min.
  • the generated smoke was collected on a Cambridge filter (CF), and the CF was immersed in cyclohexane to extract the components.
  • the cyclohexane solution was analyzed by liquid chromatography to determine the content of benzpyrene. The results are shown in Figure 3.
  • the compressive breaking strength of the carbide with a wedge-shaped plunger measured using a tablet hardness meter, was 17 N (average value of three measurements).
  • Example 2 A carbide was produced in the same manner as in Example 1, except that the heating temperature when carbonizing the compression molded body was changed to 800° C., and the content of benzpyrene in the smoke was measured. The results are shown in Figure 3. Moreover, when the compressive breaking strength of the carbide was measured in the same manner as in Example 1, the compressive breaking strength was 27 N (average value of three measurements).
  • Example 3 Shredded leaf tobacco (Malawi Burley (MWB)) was heated at 250° C. for 36 minutes, and the generated vapor was collected by cooling to obtain a flavor liquid. The amount of nicotine contained in the flavor liquid was 17.6 mg. Next, the residue of the shredded leaf tobacco after heating was carbonized by heating at 500° C. for 5 minutes in a nitrogen atmosphere to obtain a carbide. The compressive breaking strength of the carbide using a wedge-shaped plunger was 1.6 N (average value of three measurements), as measured using a tablet hardness meter.

Abstract

Provided is a flavor ingredient that, when combusted, can supply a flavor component in a sufficient amount while the amount of benzpyrene generated stays low. A method for producing a flavor ingredient, the method including a step for heating a tobacco ingredient at 150-300°C and recovering generated vapor to obtain a flavor liquid, a step for heating a residue of the tobacco ingredient at 500-1200°C in an atmosphere having an oxygen concentration of 9% or less to obtain a carbide of the tobacco ingredient, and a step for returning the flavor liquid to the carbide of the tobacco ingredient.

Description

香味材料及びその製造方法、並びに燃焼型香味吸引器Flavoring material and its manufacturing method, and combustion type flavor inhaler
　本発明は、香味材料及びその製造方法、並びに燃焼型香味吸引器に関する。 The present invention relates to a flavor material, a method for producing the same, and a combustion type flavor inhaler.
　紙巻きたばこ等の燃焼型香味吸引器では、葉たばこ等のたばこ充填物を燃焼して香味を得る。この燃焼により生成する煙中には、通常ベンツピレン（ＢａＰ）が含まれる。ベンツピレンは炭素化合物の不完全燃焼時に生成する健康懸念物質の１つであり、その生成量の低減が望まれている。 In a combustion-type flavor inhaler for cigarettes, etc., the flavor is obtained by burning the tobacco filler, such as leaf tobacco. The smoke produced by this combustion usually contains benzpyrene (BaP). Benzpyrene is one of the health-concerning substances produced during incomplete combustion of carbon compounds, and it is desired to reduce the amount produced.
　ベンツピレン量を低減する方法として、例えば特許文献１には、たばこ材料を少なくとも４００℃で熱分解して、炭及び蒸気生成物を生成し、該蒸気生成物を凝縮及び収集することで、ベンツピレン含有量の少ないたばこ由来の熱分解油が得られることが記載されている。 As a method for reducing the amount of benzpyrene, for example, Patent Document 1 discloses that a tobacco material containing benzpyrene is pyrolyzed at at least 400° C. to produce charcoal and steam products, and the steam products are condensed and collected. It is stated that a small amount of tobacco-derived pyrolysis oil can be obtained.
特開２０１９－２１３５３１号公報JP2019-213531A
　しかし、本発明者らが鋭意検討した結果、特許文献１に記載の方法のように４００℃以上の高温でたばこ材料を加熱すると、たばこ材料からベンツピレンが生成、気化するだけでなく、香味成分も揮発することが分かった。そのため、加熱後の前記たばこ材料を燃焼すると、ベンツピレンの生成量は少ないものの、香味成分の揮発量も少なかった。したがって、燃焼した場合に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できる香味材料の開発が望まれる。 However, as a result of intensive studies by the present inventors, we found that when tobacco materials are heated at a high temperature of 400°C or higher as in the method described in Patent Document 1, not only benzpyrene is produced and vaporized from the tobacco materials, but also flavor components are also lost. It was found that it evaporates. Therefore, when the heated tobacco material was burned, although the amount of benzpyrene produced was small, the amount of flavor components volatilized was also small. Therefore, it is desired to develop a flavor material that produces a small amount of benzpyrene when combusted and can supply a sufficient amount of flavor components.
　本発明は、燃焼した際に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できる香味材料を提供することを目的とする。 An object of the present invention is to provide a flavor material that produces a small amount of benzpyrene when burned and can supply a sufficient amount of flavor components.
　本発明は以下の実施態様を含む。 The present invention includes the following embodiments.
［１］たばこ材料を１５０～３００℃で加熱し、生成した蒸気を回収して香味液を得る工程と、
　酸素濃度が９％以下の雰囲気下、前記たばこ材料の残渣を５００～１２００℃で加熱して、前記たばこ材料の炭化物を得る工程と、
　前記たばこ材料の炭化物に前記香味液をかけ戻す工程と、
を含む、香味材料の製造方法。 [1] A step of heating tobacco material at 150 to 300°C and collecting the generated vapor to obtain a flavor liquid;
heating the residue of the tobacco material at 500 to 1200° C. in an atmosphere with an oxygen concentration of 9% or less to obtain a carbide of the tobacco material;
Sprinkling the flavor liquid back onto the carbonized material of the tobacco material;
A method for producing a flavoring material, including:
［２］前記香味液を得る工程の前に、前記たばこ材料に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の圧縮成型体を得る工程をさらに含む、［１］に記載の香味材料の製造方法。 [2] Before the step of obtaining the flavor liquid, the tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least a part of the alcohol is extracted from the mixture. The method for producing a flavor material according to [1], further comprising the step of obtaining a compression molded article of tobacco material by removing the tobacco material.
［３］前記香味液を得る工程の後であって、前記たばこ材料の炭化物を得る工程の前に、前記たばこ材料の残渣に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の残渣の圧縮成型体を得る工程をさらに含む、［１］に記載の香味材料の製造方法。 [3] After the step of obtaining the flavor liquid and before the step of obtaining the carbonized product of the tobacco material, an alcohol having 2 to 7 carbon atoms is mixed with the residue of the tobacco material to form a mixture; The method for producing a flavor material according to [1], further comprising the step of compression molding the mixture and removing at least a portion of the alcohol from the mixture to obtain a compression molded product of tobacco material residue.
［４］前記アルコールが、エタノール、２－プロパノール及びベンジルアルコールからなる群から選択される少なくとも一種のアルコールである、［２］又は［３］に記載の香味材料の製造方法。 [4] The method for producing a flavor material according to [2] or [3], wherein the alcohol is at least one alcohol selected from the group consisting of ethanol, 2-propanol, and benzyl alcohol.
［５］錠剤硬度計を用いて測定される、前記たばこ材料の炭化物のくさび型プランジャによる圧縮破断強度が５～２００Ｎである、［２］～［４］のいずれかに記載の香味材料の製造方法。 [5] Production of the flavor material according to any one of [2] to [4], wherein the tobacco material has a compression breaking strength of 5 to 200 N with a wedge-shaped plunger of carbide, as measured using a tablet hardness meter. Method.
［６］前記たばこ材料の炭化物を得る工程において、前記たばこ材料の残渣の加熱が不活性ガス雰囲気下で行われる、［１］～［５］のいずれかに記載の香味材料の製造方法。 [6] The method for producing a flavor material according to any one of [1] to [5], wherein in the step of obtaining the carbide of the tobacco material, the residue of the tobacco material is heated in an inert gas atmosphere.
［７］前記香味液を得る工程における加熱時間が２０秒～１２０分である、［１］～［６］のいずれかに記載の香味材料の製造方法。 [7] The method for producing a flavor material according to any one of [1] to [6], wherein the heating time in the step of obtaining the flavor liquid is 20 seconds to 120 minutes.
［８］前記たばこ材料の炭化物を得る工程における加熱時間が１秒～１０時間である、［１］～［７］のいずれかに記載の香味材料の製造方法。 [8] The method for producing a flavor material according to any one of [1] to [7], wherein the heating time in the step of obtaining the carbide of the tobacco material is 1 second to 10 hours.
［９］前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるベンツピレンの量が１００ｎｇ／ｇＷＢ以下である、［１］～［８］のいずれかに記載の香味材料の製造方法。 [9] The amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 100 ng/gWB or less, according to any one of [1] to [8]. Method for producing flavoring materials.
［１０］前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるニコチンの量が２ｍｇ／ｇＷＢ以上である、［１］～［９］のいずれかに記載の香味材料の製造方法。 [10] The amount of nicotine contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 2 mg/gWB or more, according to any one of [1] to [9]. Method for producing flavoring materials.
［１１］［１］～［１０］のいずれかに記載の方法により製造される香味材料。 [11] A flavor material produced by the method according to any one of [1] to [10].
［１２］たばこ材料の炭化物を含む香味材料であって、
　前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるベンツピレンの量が１００ｎｇ／ｇＷＢ以下であり、かつ、該煙中に含まれるニコチンの量が２ｍｇ／ｇＷＢ以上である、香味材料。 [12] A flavoring material containing carbide of tobacco material,
The amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 100 ng/g WB or less, and the amount of nicotine contained in the smoke is 2 mg/g WB or more. A flavoring material.
［１３］［１１］又は［１２］に記載の香味材料を備える燃焼型香味吸引器。 [13] A combustion type flavor inhaler comprising the flavor material according to [11] or [12].
　本発明によれば、燃焼した際に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できる香味材料を提供することができる。 According to the present invention, it is possible to provide a flavor material that produces a small amount of benzpyrene when burned and can supply a sufficient amount of flavor components.
本実施形態に係る燃焼型香味吸引器の一例を示す断面図である。It is a sectional view showing an example of a combustion type flavor inhaler concerning this embodiment. 比較例１における煙中に含まれるベンツピレン、ニコチンの量を示すグラフである。2 is a graph showing the amounts of benzpyrene and nicotine contained in smoke in Comparative Example 1. 実施例１及び２における煙中に含まれるベンツピレンの量を示すグラフである。2 is a graph showing the amount of benzpyrene contained in smoke in Examples 1 and 2.
　［香味材料の製造方法］
　本実施形態に係る香味材料の製造方法は、以下の工程を含む。たばこ材料を１５０～３００℃で加熱し、生成した蒸気を回収して香味液を得る工程（以下、「低温加熱工程」ともいう。）；酸素濃度が９％以下の雰囲気下、前記たばこ材料の残渣を５００～１２００℃で加熱して、前記たばこ材料の炭化物を得る工程（以下、「高温加熱工程」ともいう。）；前記たばこ材料の炭化物に前記香味液をかけ戻す工程（以下、「かけ戻し工程」ともいう。）。 [Method for producing flavoring materials]
The method for producing a flavor material according to this embodiment includes the following steps. A process of heating the tobacco material at 150 to 300°C and collecting the generated vapor to obtain a flavor liquid (hereinafter also referred to as "low-temperature heating process"); heating the tobacco material in an atmosphere with an oxygen concentration of 9% or less. A step of heating the residue at 500 to 1200°C to obtain a charred product of the tobacco material (hereinafter also referred to as "high-temperature heating step"); a step of pouring the flavor liquid back onto the charred material of the tobacco material (hereinafter referred to as "sprinkling") (Also referred to as "returning process.")
　本実施形態に係る方法では、まず低温加熱工程を実施することで、先にたばこ材料からニコチン、バニリン等の香味成分を選択的に揮発させて、香味液として回収する。なお、低温加熱工程では加熱温度が低いため、ベンツピレンはほとんど生成しない。次に、たばこ材料の残渣に対して高温加熱工程を実施することで、ベンツピレンを生成、気化させる。たばこ材料の残渣自身は、低酸素雰囲気下で高温加熱されるため、炭化して炭化物となる。その後、かけ戻し工程により、前記たばこ材料の炭化物に前記香味液をかけ戻すことで、前記たばこ材料の炭化物に香味成分が戻される。したがって、本実施形態に係る方法では、十分な量の香味成分を含み、かつ、燃焼してもベンツピレンの生成量が少ない香味材料を効率よく製造することができる。 In the method according to the present embodiment, a low-temperature heating step is first performed to selectively volatilize flavor components such as nicotine and vanillin from the tobacco material and recover them as a flavor liquid. Note that in the low-temperature heating step, since the heating temperature is low, almost no benzpyrene is produced. Next, the residue of the tobacco material is subjected to a high temperature heating step to generate and vaporize benzpyrene. The residue of the tobacco material itself is carbonized and becomes carbide because it is heated at high temperature in a low oxygen atmosphere. Thereafter, in a respraying step, the flavor liquid is poured back onto the carbonized material of the tobacco material, thereby returning the flavor components to the carbonized material of the tobacco material. Therefore, in the method according to the present embodiment, it is possible to efficiently produce a flavor material that contains a sufficient amount of flavor components and produces a small amount of benzpyrene even when burned.
　本実施形態に係る方法は、低温加熱工程の前に、たばこ材料に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の圧縮成型体を得る工程（以下、「圧縮成型体製造工程（１）」ともいう。）をさらに含むことが好ましい。本実施形態に係る方法が圧縮成型体製造工程（１）を含む場合、低温加熱工程ではたばこ材料の圧縮成型体を１５０～３００℃で加熱し、生成した蒸気を回収して香味液を得る。又は、本実施形態に係る方法は、低温加熱工程の後であって、高温加熱工程の前に、たばこ材料の残渣に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の残渣の圧縮成型体を得る工程（以下、「圧縮成型体製造工程（２）」ともいう。）をさらに含むことが好ましい。本実施形態に係る方法が圧縮成型体製造工程（２）を含む場合、高温加熱工程では酸素濃度が９％以下の雰囲気下、たばこ材料の残渣の圧縮成型体を５００～１２００℃で加熱して、前記たばこ材料の炭化物を得る。 In the method according to the present embodiment, before the low-temperature heating step, a tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least part of the alcohol is extracted from the mixture. It is preferable to further include a step of obtaining a compression molded article of tobacco material by removing (hereinafter also referred to as "compression molded article manufacturing step (1)"). When the method according to the present embodiment includes the compression molded body manufacturing step (1), the compression molded body of the tobacco material is heated at 150 to 300° C. in the low temperature heating step, and the generated vapor is collected to obtain a flavor liquid. Alternatively, in the method according to the present embodiment, after the low-temperature heating step and before the high-temperature heating step, an alcohol having 2 to 7 carbon atoms is mixed with the residue of the tobacco material to form a mixture, and the mixture is The method further includes a step of compression molding and removing at least a portion of the alcohol from the mixture to obtain a compression molded product of tobacco material residue (hereinafter also referred to as "compression molded product manufacturing step (2)"). It is preferable. When the method according to the present embodiment includes the compression molded product manufacturing step (2), the high temperature heating step involves heating the compression molded product of tobacco material residue at 500 to 1200°C in an atmosphere with an oxygen concentration of 9% or less. , obtaining a carbide of the tobacco material.
　高温加熱工程では、酸素濃度が９％以下の低酸素雰囲気下でたばこ材料の残渣を５００～１２００℃に加熱するため、たばこ材料の残渣は炭化して炭化物となり、保形性が向上する。しかし、たばこ材料がたばこ刻等である場合、その炭化物はややもろく、崩れやすい。本実施形態に係る方法が圧縮成型体製造工程（１）又は（２）を含む場合、高温加熱工程前に、たばこ材料又はたばこ材料の残渣に炭素数２～７のアルコールを添加して圧縮成型する。前記アルコールはバインダーとして機能するため、十分な強度を有する圧縮成型体が得られる。また、前記アルコールはその後除去されるため、得られる圧縮成型体は十分な強度を有し、かつアルコールの影響がない良好な香味を提供できる。該圧縮成型体に対して高温加熱工程を実施すると、得られるたばこ材料（圧縮成型体）の炭化物は、より高い保形性及び硬さを有する。例えば、該炭化物を紙で巻き上げてたばこロッドを形成する際にもその形状が十分に維持され、巻き上げやすい。 In the high-temperature heating step, the residue of the tobacco material is heated to 500 to 1200°C in a low-oxygen atmosphere with an oxygen concentration of 9% or less, so the residue of the tobacco material is carbonized and becomes a carbide, improving shape retention. However, when the tobacco material is shredded tobacco or the like, the carbide is somewhat brittle and easily crumbles. When the method according to the present embodiment includes the compression-molded product manufacturing step (1) or (2), before the high-temperature heating step, an alcohol having 2 to 7 carbon atoms is added to the tobacco material or the residue of the tobacco material, and compression molding is performed. do. Since the alcohol functions as a binder, a compression molded product having sufficient strength can be obtained. In addition, since the alcohol is subsequently removed, the compression molded product obtained has sufficient strength and can provide a good flavor without the influence of alcohol. When the compression molded product is subjected to a high temperature heating step, the resulting carbide of the tobacco material (compression molded product) has higher shape retention and hardness. For example, even when the carbide is rolled up with paper to form a tobacco rod, its shape is sufficiently maintained and it is easy to roll up.
　以下、本実施形態に係る方法における各工程について説明するが、本実施形態に係る方法は、圧縮成型体製造工程（１）、低温加熱工程、圧縮成型体製造工程（２）、高温加熱工程、かけ戻し工程以外の他の工程を含んでもよい。 Each step in the method according to the present embodiment will be described below. The method according to the present embodiment includes a compression molded body manufacturing process (1), a low temperature heating process, a compression molded body manufacturing process (2), a high temperature heating process, It may also include steps other than the reversing step.
　（圧縮成型体製造工程（１））
　本実施形態に係る方法は、任意で圧縮成型体製造工程（１）を含むことができる。本工程では、たばこ材料に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の圧縮成型体を得る。本工程は、後述する低温加熱工程の前に実施される。本工程を実施することで、後述する高温加熱工程により得られる炭化物の強度を向上させることができる。 (Compression molded body manufacturing process (1))
The method according to this embodiment can optionally include a compression molded body manufacturing step (1). In this step, a tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least a portion of the alcohol is removed from the mixture, thereby compression molding the tobacco material. Get a body. This step is performed before the low-temperature heating step described below. By carrying out this step, the strength of the carbide obtained by the high-temperature heating step described below can be improved.
　たばこ材料としては、例えば葉たばこ、たばこの葉脈部、幹部、根、花等が裁刻等され、粉末状になったたばこ粉末が挙げられる。前記葉たばこの種類は特に限定されず、どの品種も適用可能であるが、例えば黄色種、バーレー種、在来種、オリエント葉等や、それらの発酵葉等であることができる。これらのたばこ材料は一種を用いてもよく、二種以上を併用してもよい。 Examples of tobacco materials include leaf tobacco, and tobacco powder obtained by cutting tobacco leaf veins, trunks, roots, flowers, etc. into powder. The type of leaf tobacco is not particularly limited, and any variety can be used, but examples include yellow tobacco, burley tobacco, native tobacco, orient leaf, and fermented leaves thereof. These tobacco materials may be used alone or in combination of two or more.
　前記たばこ材料の平均粒子径は１００μｍ以下であることが好ましい。前記平均粒子径が１００μｍ以下であることにより、経時による変形が少なく、十分な強度を有する圧縮成型体が得られる。前記平均粒子径は５～８０μｍがより好ましく、１０～６０μｍがさらに好ましく、２０～５０μｍが特に好ましい。なお、前記平均粒子径は光散乱法を用いて測定される。 The average particle diameter of the tobacco material is preferably 100 μm or less. When the average particle diameter is 100 μm or less, a compression-molded product that is less deformed over time and has sufficient strength can be obtained. The average particle diameter is more preferably 5 to 80 μm, even more preferably 10 to 60 μm, and particularly preferably 20 to 50 μm. Note that the average particle diameter is measured using a light scattering method.
　前記アルコールの炭素数は２～７であり、２～５が好ましく、２～３がより好ましい。前記アルコールとしては、エタノール、２－プロパノール及びベンジルアルコールからなる群から選択される少なくとも一種のアルコールが、より高い強度を有する圧縮成型体が得られる観点から好ましく、エタノールが最も好ましい。 The alcohol has 2 to 7 carbon atoms, preferably 2 to 5 carbon atoms, and more preferably 2 to 3 carbon atoms. As the alcohol, at least one alcohol selected from the group consisting of ethanol, 2-propanol, and benzyl alcohol is preferred from the viewpoint of obtaining a compression molded product with higher strength, and ethanol is most preferred.
　前記たばこ材料１００質量部に対して前記アルコールを１～２０質量部混合することが好ましい。前記たばこ材料１００質量部に対して前記アルコールを１質量部以上混合することにより、より高い強度を有する圧縮成型体が得られる。また、前記たばこ材料１００質量部に対して前記アルコールを２０質量部以下混合することにより、容易に圧縮成型を行うことができる。前記たばこ材料１００質量部に対して前記アルコールを２～１５質量部混合することがより好ましく、３～１０質量部混合することがさらに好ましい。 It is preferable that 1 to 20 parts by mass of the alcohol be mixed with 100 parts by mass of the tobacco material. By mixing 1 part by mass or more of the alcohol with 100 parts by mass of the tobacco material, a compression molded product having higher strength can be obtained. Further, by mixing 20 parts by mass or less of the alcohol to 100 parts by mass of the tobacco material, compression molding can be easily performed. It is more preferable to mix 2 to 15 parts by weight of the alcohol, and even more preferably 3 to 10 parts by weight, to 100 parts by weight of the tobacco material.
　前記たばこ材料に対して、前記アルコール以外に、例えばセルロース粉末等をさらに添加してもよい。セルロース粉末を混合することで、圧縮成型体の強度がさらに向上する。前記たばこ材料に前記アルコールを混合する方法は特に限定されないが、例えばＶ型混合機等の一般的な混合機を用いて混合することができる。 In addition to the alcohol, for example, cellulose powder or the like may be further added to the tobacco material. By mixing cellulose powder, the strength of the compression molded product is further improved. The method of mixing the tobacco material with the alcohol is not particularly limited, but it can be mixed using a general mixer such as a V-type mixer, for example.
　得られた混合物を圧縮成型する際に用いられる圧縮成型機は特に限定されないが、例えば回転式打錠機等を用いることができる。圧縮成型の条件は特に限定されないが、例えば２ｋＮ以上の圧縮圧力で成形することが望ましい。圧縮成型中にアルコールの少なくとも一部が自然乾燥等により除去されてもよい。圧縮成型により得られる圧縮成型体の形状は特に限定されないが、例えば錠剤（タブレット）形状、板状、円筒形状、棒状、球状等であることができる。 The compression molding machine used for compression molding the obtained mixture is not particularly limited, but for example, a rotary tabletting machine or the like can be used. Although the compression molding conditions are not particularly limited, it is desirable to perform the molding under a compression pressure of 2 kN or more, for example. At least a portion of the alcohol may be removed by natural drying or the like during compression molding. The shape of the compression molded product obtained by compression molding is not particularly limited, and may be, for example, a tablet shape, a plate shape, a cylindrical shape, a rod shape, a spherical shape, or the like.
　アルコールの少なくとも一部の除去は、前述したように前記圧縮成型中に前記混合物に対して行われてもよく、前記圧縮成型後に得られた圧縮成型体に対して行われてもよい。アルコールの少なくとも一部の除去は、１０～４０℃で行われることが好ましい。１０℃以上で前記アルコールの少なくとも一部を除去することにより、アルコールの除去を十分に行うことができる。また、４０℃以下で前記アルコールの少なくとも一部を除去することにより、加熱による香味への影響を抑制することができる。前記アルコールの少なくとも一部を除去する際の温度は、１５～３５℃がより好ましく、２０～３０℃がさらに好ましい。１０～４０℃で前記アルコールの少なくとも一部を除去する場合、例えば１０～４０℃で３０分から３日間乾燥することで、前記アルコールの少なくとも一部を除去することができる。 At least a portion of the alcohol may be removed from the mixture during the compression molding as described above, or from the compression molded body obtained after the compression molding. Preferably, the removal of at least a portion of the alcohol is carried out at 10-40°C. By removing at least a portion of the alcohol at a temperature of 10° C. or higher, the alcohol can be sufficiently removed. Moreover, by removing at least a portion of the alcohol at 40° C. or lower, the influence of heating on flavor can be suppressed. The temperature at which at least a portion of the alcohol is removed is more preferably 15 to 35°C, and even more preferably 20 to 30°C. When removing at least part of the alcohol at 10 to 40°C, at least part of the alcohol can be removed, for example, by drying at 10 to 40°C for 30 minutes to 3 days.
　前記アルコールの少なくとも一部の除去は、例えば電気オーブン、熱風乾燥、トンネルドライヤー、自然乾燥等により実施することができる。また、前記アルコールの除去は密閉空間内ではなく、開放状態で行うことが好ましい。アルコールの除去率としては、前記混合物（圧縮成型体）に含まれるアルコールの９０質量％以上が除去されることが好ましく、９５質量％以上が除去されることがより好ましく、９９質量％以上が除去されることがさらに好ましく、全てのアルコールが除去されることが特に好ましい。 At least a portion of the alcohol can be removed by, for example, an electric oven, hot air drying, a tunnel dryer, natural drying, or the like. Further, it is preferable that the alcohol is removed not in a closed space but in an open state. As for the alcohol removal rate, it is preferable that 90% by mass or more of the alcohol contained in the mixture (compression molded body) is removed, more preferably 95% by mass or more is removed, and 99% by mass or more is removed. It is even more preferred that the alcohol be removed, and it is particularly preferred that all alcohol be removed.
　（低温加熱工程）
　本工程では、たばこ材料を１５０～３００℃で加熱し、生成した蒸気を回収して香味液を得る。本工程により、たばこ材料からニコチン等の香味成分を選択的に揮発させて、香味液として回収することができる。一方、香味成分が揮発した後には、たばこ材料の残渣が残る。なお、圧縮成型体製造工程（１）を実施する場合、本工程において１５０～３００℃で加熱するたばこ材料は、たばこ材料の圧縮成型体である。一方、圧縮成型体製造工程（１）を実施しない場合、たばこ材料としては圧縮成型体製造工程（１）で用いられるたばこ材料をそのまま用いることができ、形状としては粉末状以外に刻み状等であってもよい。 (Low temperature heating process)
In this step, the tobacco material is heated at 150 to 300°C, and the generated vapor is collected to obtain a flavor liquid. Through this step, flavor components such as nicotine can be selectively volatilized from the tobacco material and recovered as a flavor liquid. On the other hand, after the flavor components volatilize, residues of the tobacco material remain. In addition, when carrying out the compression molded product manufacturing step (1), the tobacco material heated at 150 to 300° C. in this step is a compression molded product of the tobacco material. On the other hand, if the compression molded body manufacturing process (1) is not carried out, the tobacco material used in the compression molded body manufacturing process (1) can be used as is, and the shape may be in the form of shreds, etc. other than powder. There may be.
　本工程において、たばこ材料の加熱温度は１５０～３００℃である。前記加熱温度が１５０℃以上であることにより、たばこ材料からニコチン、バニリン等の香味成分を選択的に揮発させることができる。また、前記加熱温度が３００℃以下であることにより、ベンツピレン等の生成を十分に防ぐことができる。前記加熱温度は１７０～２９０℃が好ましく、２００～２７０℃がより好ましく、２３０～２５０℃がさらに好ましい。たばこ材料の加熱時間は、たばこ材料の加熱温度にもよるが、２０秒～１２０分が好ましく、５分～６０分がより好ましい。 In this step, the heating temperature of the tobacco material is 150 to 300°C. By setting the heating temperature to 150° C. or higher, flavor components such as nicotine and vanillin can be selectively volatilized from the tobacco material. Furthermore, by setting the heating temperature to 300° C. or lower, generation of benzpyrene and the like can be sufficiently prevented. The heating temperature is preferably 170 to 290°C, more preferably 200 to 270°C, even more preferably 230 to 250°C. The heating time for the tobacco material depends on the heating temperature of the tobacco material, but is preferably 20 seconds to 120 minutes, more preferably 5 minutes to 60 minutes.
　たばこ材料の加熱により生成する蒸気の回収方法は特に限定されないが、例えば生成する蒸気を冷却して回収する、生成する蒸気を蒸留水、エタノール、ヘキサン、２－プロパノール、１－プロパノール、プロピレングリコール、グリセリン等の溶媒中に通過させて該溶媒中に捕集する、吸着剤やカラム、フィルター等を用いて捕集しその後溶出させる等の方法が挙げられる。 The method for recovering the vapor generated by heating the tobacco material is not particularly limited, but for example, the generated vapor may be cooled and recovered, or the generated vapor may be collected using distilled water, ethanol, hexane, 2-propanol, 1-propanol, propylene glycol, Examples include methods such as passing through a solvent such as glycerin and collecting in the solvent, collecting using an adsorbent, column, filter, etc., and then eluting.
　（圧縮成型体製造工程（２））
　本実施形態に係る方法は、任意で圧縮成型体製造工程（２）を含むことができる。本工程では、前記たばこ材料の残渣に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の残渣の圧縮成型体を得る。本工程は、低温加熱工程の後、かつ、後述する高温加熱工程の前に実施される。本工程を実施することで、後述する高温加熱工程により得られる炭化物の強度を向上させることができる。なお、前述した圧縮成型体製造工程（１）を実施する場合、低温加熱工程後に得られるたばこ材料の残渣は既に圧縮成型体であるため、本工程を実施する必要はない。すなわち、本実施形態に係る方法は、圧縮成型体製造工程（１）及び（２）のいずれか一方を含むことができる。 (Compression molded body manufacturing process (2))
The method according to this embodiment can optionally include a compression molded body manufacturing step (2). In this step, an alcohol having 2 to 7 carbon atoms is mixed with the residue of the tobacco material to form a mixture, the mixture is compression molded, and at least a part of the alcohol is removed from the mixture, so that the tobacco material is A compression molded body of the residue is obtained. This step is performed after the low-temperature heating step and before the high-temperature heating step described below. By carrying out this step, the strength of the carbide obtained by the high-temperature heating step described below can be improved. In addition, when implementing the above-mentioned compression molded product manufacturing step (1), since the residue of the tobacco material obtained after the low temperature heating step is already a compression molded product, it is not necessary to implement this step. That is, the method according to the present embodiment can include either one of compression molded body manufacturing steps (1) and (2).
　本工程は、たばこ材料の代わりに、たばこ材料の残渣に炭素数２～７のアルコールを混合して混合物を形成する以外は、前述した圧縮成型体製造工程（１）と同様の方法により実施することができる。 This step is carried out in the same manner as the compression molded body manufacturing step (1) described above, except that instead of the tobacco material, an alcohol having 2 to 7 carbon atoms is mixed with the residue of the tobacco material to form a mixture. be able to.
　（高温加熱工程）
　本工程では、酸素濃度が９％以下の雰囲気下、前記たばこ材料の残渣を５００～１２００℃で加熱して、前記たばこ材料の炭化物を得る。本工程により、たばこ材料の残渣からベンツピレンを生成、気化させる。たばこ材料の残渣自身は低酸素雰囲気下で高温加熱されるため、炭化して炭化物となる。なお、圧縮成型体製造工程（１）又は（２）を実施する場合、本工程において５００～１２００℃で加熱するたばこ材料の残渣は、たばこ材料の残渣の圧縮成型体である。 (High temperature heating process)
In this step, the residue of the tobacco material is heated at 500 to 1200° C. in an atmosphere with an oxygen concentration of 9% or less to obtain a carbide of the tobacco material. In this step, benzpyrene is produced and vaporized from the residue of the tobacco material. Since the residue of the tobacco material itself is heated at high temperature in a low oxygen atmosphere, it carbonizes and becomes carbide. Note that when carrying out the compression molded product manufacturing step (1) or (2), the residue of the tobacco material heated at 500 to 1200° C. in this step is a compression molded product of the residue of the tobacco material.
　たばこ材料の残渣の加熱は、酸素濃度が９％以下の雰囲気下で実施される。酸素濃度が９％以下の低酸素雰囲気下で高温加熱を行うことで、たばこ材料の残渣を炭化させることができ、たばこ材料の残渣の保形性及び硬さが向上する。また、たばこ材料の残渣の酸化反応を防ぐことができ、使用時燃焼した際に良好な香味を提供できる。たばこ材料の残渣の加熱は、無酸素雰囲気（例えば窒素、アルゴン等の不活性ガス雰囲気）下で実施されることがより好ましい。 The heating of the tobacco material residue is carried out in an atmosphere with an oxygen concentration of 9% or less. By performing high temperature heating in a low oxygen atmosphere with an oxygen concentration of 9% or less, the residue of the tobacco material can be carbonized, and the shape retention and hardness of the residue of the tobacco material are improved. Further, it is possible to prevent the oxidation reaction of the residue of the tobacco material, and it is possible to provide a good flavor when burned during use. More preferably, the tobacco material residue is heated in an oxygen-free atmosphere (for example, an inert gas atmosphere such as nitrogen or argon).
　たばこ材料の残渣の加熱温度は５００～１２００℃である。前記加熱温度が５００℃以上であることにより、たばこ材料の残渣からベンツピレンを十分に生成、気化させることができ、かつ、たばこ材料の残渣を炭化できる。また、前記加熱温度が１２００℃以下であることにより、通常の加熱装置を使用して適切に加熱を行うことができる。前記加熱温度は５００～１０００℃が好ましく、５００～８００℃がより好ましい。たばこ材料の残渣の加熱時間は、たばこ材料の残渣の加熱温度にもよるが、１秒～１０時間が好ましく、３０秒～１時間がより好ましい。 The heating temperature of the tobacco material residue is 500 to 1200°C. By setting the heating temperature to 500° C. or higher, benzpyrene can be sufficiently produced and vaporized from the residue of the tobacco material, and the residue of the tobacco material can be carbonized. Moreover, since the heating temperature is 1200° C. or lower, heating can be appropriately performed using a normal heating device. The heating temperature is preferably 500 to 1000°C, more preferably 500 to 800°C. The heating time for the tobacco material residue depends on the heating temperature of the tobacco material residue, but is preferably 1 second to 10 hours, more preferably 30 seconds to 1 hour.
　前記圧縮成型体製造工程（１）又は（２）を実施した場合、錠剤硬度計を用いて測定される、本工程で得られるたばこ材料の炭化物（たばこ材料の残渣の圧縮成型体の炭化物）のくさび型プランジャによる圧縮破断強度は、５～２００Ｎであることが好ましい。前記圧縮破断強度が５Ｎ以上であることにより、前記炭化物を紙等で巻き上げてたばこロッドを形成する際にもその形状が十分に維持され、巻き上げやすい。前記圧縮破断強度は１０～２００Ｎであることがより好ましい。なお、前記圧縮破断強度は、具体的には後述する方法により測定される。 When carrying out the compression molded product manufacturing step (1) or (2), the char of the tobacco material obtained in this step (the char of the compression molded product of the residue of the tobacco material) measured using a tablet hardness meter. The compressive breaking strength of the wedge-shaped plunger is preferably 5 to 200N. When the compressive breaking strength is 5 N or more, even when the carbide is rolled up with paper or the like to form a tobacco rod, its shape is sufficiently maintained and winding is easy. More preferably, the compressive breaking strength is 10 to 200N. Note that the compressive breaking strength is specifically measured by the method described below.
　（かけ戻し工程）
　本工程では、前記たばこ材料の炭化物に前記香味液をかけ戻す。本工程により、予めたばこ材料から取り出していた香味成分を前記たばこ材料の炭化物に戻すことができる。したがって、香味成分が戻されたたばこ材料の炭化物である香味材料を得ることができる。該香味材料は低酸素雰囲気下での高温加熱（５００～１２００℃）を経験しているため、炭化しており、燃焼してもベンツピレンの生成量が少ない。一方、該香味材料は香味成分を十分な量含むため、燃焼した際に香味成分が十分な量揮発する。 (Returning process)
In this step, the flavor liquid is poured back onto the carbonized material of the tobacco material. Through this step, the flavor components previously extracted from the tobacco material can be returned to the carbonized product of the tobacco material. Therefore, it is possible to obtain a flavor material that is a carbonized tobacco material with flavor components returned thereto. Since the flavor material has undergone high-temperature heating (500 to 1200° C.) in a low-oxygen atmosphere, it is carbonized, and even when burned, the amount of benzpyrene produced is small. On the other hand, since the flavor material contains a sufficient amount of flavor components, a sufficient amount of the flavor components are volatilized when burned.
　たばこ材料の炭化物に香味液をかけ戻す方法は特に限定されない。例えば、たばこ材料の炭化物に香味液を添加して混合し、炭化物に香味液を染み込ませることでかけ戻すことができる。かけ戻した後で香味液を含む炭化物を乾燥してもよい。 The method of applying the flavoring liquid back onto the carbonized tobacco material is not particularly limited. For example, the flavor liquid can be added to and mixed with the charred material of the tobacco material, and the flavor liquid can be soaked into the charred material to reapply the tobacco material. After being applied back, the charred material containing the flavor liquid may be dried.
　（香味材料の物性）
　本実施形態に係る方法により製造される香味材料は、燃焼した際に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分が供給される。例えば、前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるベンツピレンの量は、１００ｎｇ／ｇＷＢ以下であることが好ましく、５０ｎｇ／ｇＷＢ以下であることがより好ましい。なお、前記煙中にベンツピレンは含まれなくてもよい。また、前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるニコチンの量は２ｍｇ／ｇＷＢ以上であることが好ましく、１０ｍｇ／ｇＷＢ以上であることがより好ましい。前記ニコチンの量の範囲の上限は特に限定されないが、例えば３０ｍｇ／ｇＷＢ以下であることができる。 (Physical properties of flavoring materials)
When the flavor material produced by the method according to the present embodiment is burned, the amount of benzpyrene produced is small, and a sufficient amount of flavor components are supplied. For example, the amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800°C for 10 seconds in an air atmosphere is preferably 100 ng/g WB or less, more preferably 50 ng/g WB or less. . Note that benzpyrene does not need to be included in the smoke. Further, the amount of nicotine contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is preferably 2 mg/g WB or more, more preferably 10 mg/g WB or more. The upper limit of the range of the amount of nicotine is not particularly limited, but can be, for example, 30 mg/g WB or less.
　なお、前記ベンツピレン及びニコチンの量は、具体的には以下の方法により測定される。香味材料を赤外炉内に配置して８００℃に昇温し、空気を１Ｌ／分の流量で流通させながら８００℃で１０秒保持する。生成した煙をケンブリッジフィルター（ＣＦ）に捕集する。ベンツピレンの定量については、該ＣＦをシクロヘキサンに浸漬させて成分を抽出する。該シクロヘキサン溶液を液体クロマトグラフィーにより分析し、ベンツピレンの含有量を定量する。ニコチンの定量については、該ＣＦをメタノールに浸漬させて成分を抽出する。該メタノール溶液をガスクロマトグラフィーにより分析し、ニコチンの含有量を定量する。 Note that the amounts of benzpyrene and nicotine are specifically measured by the following method. The flavoring material is placed in an infrared oven, heated to 800°C, and held at 800°C for 10 seconds while flowing air at a flow rate of 1 L/min. The generated smoke is collected in a Cambridge filter (CF). For quantitative determination of benzpyrene, the CF is immersed in cyclohexane to extract the component. The cyclohexane solution is analyzed by liquid chromatography to determine the content of benzpyrene. For quantitative determination of nicotine, the CF is immersed in methanol to extract the component. The methanol solution is analyzed by gas chromatography to quantify the nicotine content.
　［香味材料］
　本実施形態に係る香味材料は、前述した本実施形態に係る香味材料の製造方法により製造される。該香味材料は、本実施形態に係る方法により製造されるため、燃焼した際に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できる。 [Flavour materials]
The flavor material according to this embodiment is manufactured by the method for manufacturing a flavor material according to this embodiment described above. Since the flavor material is produced by the method according to the present embodiment, when burned, the amount of benzpyrene produced is small and a sufficient amount of flavor components can be supplied.
　また、本実施形態に係る他の香味材料は、たばこ材料の炭化物を含む香味材料であって、前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるベンツピレンの量が１００ｎｇ／ｇＷＢ以下であり、かつ、該煙中に含まれるニコチンの量が２ｍｇ／ｇＷＢ以上である。該香味材料は、燃焼した際に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できる。該香味材料は、前述した本実施形態に係る香味材料の製造方法により好適に製造される。 Further, another flavor material according to the present embodiment is a flavor material containing carbide of tobacco material, and includes benzpyrene contained in smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere. The amount of nicotine is 100 ng/g WB or less, and the amount of nicotine contained in the smoke is 2 mg/g WB or more. When the flavor material is combusted, it produces a small amount of benzpyrene and can supply a sufficient amount of flavor components. The flavor material is preferably manufactured by the method for manufacturing a flavor material according to the present embodiment described above.
　［燃焼型香味吸引器］
　本実施形態に係る燃焼型香味吸引器は、本実施形態に係る香味材料を備える。該燃焼型香味吸引器は、本実施形態に係る香味材料を備えるため、使用時にベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できる。 [Combustion type flavor inhaler]
The combustion type flavor inhaler according to this embodiment includes the flavor material according to this embodiment. Since the combustion type flavor inhaler includes the flavor material according to the present embodiment, the amount of benzpyrene produced during use is small and a sufficient amount of flavor components can be supplied.
　本実施形態に係る燃焼型香味吸引器の一例を図１に示す。図１に示されるように、燃焼型香味吸引器１は、たばこロッド２と、たばこロッド２に隣接して設けられたフィルターセグメント３とを含む。たばこロッド２は、本実施形態に係る香味材料であるたばこ充填物４と、たばこ充填物４の周囲を巻いた紙等のラッパー５とを含む。たばこロッド２とフィルターセグメント３とは、たばこロッド２及びフィルターセグメント３上に巻かれたチップペーパー部材６によって連結されている。チップペーパー部材６は、その外周の一部に通気孔を有していてもよい。通気孔の数は１つでも複数でもよく、例えば１０～４０個形成されていることができる。通気孔の数が複数の場合、通気孔は例えばチップペーパー部材６の外周部に一列に並んで環状に配置されることができる。複数の通気孔は、略一定の間隔で配置されることができる。通気孔を設けることによって、吸引時に通気孔からフィルターセグメント３内に空気が取り込まれる。主流煙を通気孔からの外気によって薄めることで、所望のタール値の製品設計を行うことができる。このような燃焼型香味吸引器は一般的にはシガレットに代表されるものが挙げられる。 An example of the combustion type flavor inhaler according to this embodiment is shown in FIG. 1. As shown in FIG. 1, the combustion flavor inhaler 1 includes a tobacco rod 2 and a filter segment 3 provided adjacent to the tobacco rod 2. As shown in FIG. The tobacco rod 2 includes a tobacco filler 4, which is a flavor material according to the present embodiment, and a wrapper 5, such as paper, wrapped around the tobacco filler 4. The tobacco rod 2 and the filter segment 3 are connected by a tipping paper member 6 wound on the tobacco rod 2 and the filter segment 3. The tip paper member 6 may have a ventilation hole in a part of its outer periphery. The number of ventilation holes may be one or more, and for example, 10 to 40 ventilation holes may be formed. When there is a plurality of ventilation holes, the ventilation holes can be arranged in a ring shape around the outer periphery of the chipping paper member 6, for example. The plurality of vent holes may be arranged at substantially regular intervals. By providing the vent holes, air is drawn into the filter segment 3 through the vent holes during suction. By diluting the mainstream smoke with outside air from the vents, it is possible to design a product with a desired tar value. A typical example of such a combustion-type flavor inhaler is a cigarette.
　使用者は、たばこロッド２の先端に着火して、フィルターセグメント３の吸口端を口でくわえて吸引することで、香味を得ることができる。特に、燃焼型香味吸引器１のたばこロッド２には本実施形態に係る香味材料が充填されているため、使用時にベンツピレンの生成量が少なく、かつ、十分な量の香味成分が得られる。 The user can obtain the flavor by lighting the tip of the tobacco rod 2, holding the mouth end of the filter segment 3 in his mouth, and inhaling it. In particular, since the tobacco rod 2 of the combustion type flavor inhaler 1 is filled with the flavor material according to this embodiment, the amount of benzpyrene produced during use is small and a sufficient amount of flavor components can be obtained.
　以下、本実施形態を実施例により詳細に説明するが、本実施形態はこれらの実施例に限定されない。 Hereinafter, this embodiment will be described in detail with reference to Examples, but this embodiment is not limited to these Examples.
　［比較例１］
　葉たばこ刻（マラウイバーレー（ＭＷＢ））を、窒素雰囲気下５００℃で５分間加熱して、葉たばこ刻の炭化物を得た。その後、前記葉たばこ刻の炭化物を赤外炉内に配置して８００℃に昇温し、空気を１Ｌ／分の流量で流通させながら８００℃で１０秒保持した。生成した煙をケンブリッジフィルター（ＣＦ）に捕集した。該ＣＦをシクロヘキサンに浸漬させて成分を抽出し、得られたシクロヘキサン溶液を液体クロマトグラフィーにより分析することで、ベンツピレンの含有量を定量した。また、該ＣＦをメタノールに浸漬させて成分を抽出し、得られたメタノール溶液をガスクロマトグラフィーにより分析することで、ニコチンの含有量を定量した。また、コントロールとして、窒素雰囲気下５００℃で５分間加熱しない（炭化処理しない）葉たばこ刻についても、同様に８００℃で燃焼させて煙中のベンツピレン及びニコチン量を定量した。結果を図２に示す。 [Comparative example 1]
Shredded leaf tobacco (Malawi Burley (MWB)) was heated at 500° C. for 5 minutes in a nitrogen atmosphere to obtain a charred product of shredded leaf tobacco. Thereafter, the carbide of the shredded leaf tobacco was placed in an infrared furnace, heated to 800°C, and held at 800°C for 10 seconds while circulating air at a flow rate of 1 L/min. The generated smoke was collected on a Cambridge filter (CF). The CF was immersed in cyclohexane to extract the components, and the resulting cyclohexane solution was analyzed by liquid chromatography to determine the content of benzpyrene. Further, the nicotine content was determined by immersing the CF in methanol to extract the components, and analyzing the resulting methanol solution by gas chromatography. Furthermore, as a control, chopped leaf tobacco that was not heated at 500°C for 5 minutes in a nitrogen atmosphere (not carbonized) was similarly burned at 800°C, and the amounts of benzpyrene and nicotine in the smoke were quantified. The results are shown in Figure 2.
　図２に示されるように、コントロール（ｃｏｎｔｒｏｌ）と比較して、予め５００℃で炭化した場合（Ｎ２＿５００）には煙中のベンツピレン量が低減することが分かった。しかし、コントロール（ｃｏｎｔｒｏｌ）と比較して、予め５００℃で炭化した場合（Ｎ２＿５００）には煙中のニコチン量も大幅に減少する（ニコチンがほとんど含まれない）ことが分かった。 As shown in Figure 2, it was found that the amount of benzpyrene in the smoke was reduced when carbonized at 500°C (N2_500) in advance compared to the control. However, compared to the control, it was found that when carbonized in advance at 500°C (N2_500), the amount of nicotine in the smoke was also significantly reduced (almost no nicotine was included).
　［実施例１］
　葉たばこ刻（マラウイバーレー（ＭＷＢ））を２５０℃で３６分間加熱し、生成した蒸気を冷却により回収し、香味液を得た。該香味液中に含まれるニコチン量は１７．６ｍｇであった。次に、加熱後の葉たばこ刻の残渣を、平均粒子径が３０μｍになるように粉砕した。粉砕後の葉たばこ刻の残渣１００質量部に対して、３質量部のエタノールを加えて混合した。得られた混合物を圧縮成型機（商品名；ＴＤＰ　０、ＬＦＡ　Ｍａｃｈｉｎｅｓ　Ｏｘｆｏｒｄ　Ｌｔｄ製）により錠剤形状に圧縮成型した。得られた圧縮成型体を２０℃で２日間乾燥し、圧縮成型体に含まれるエタノールを除去した。その後、該圧縮成型体を、窒素雰囲気下、５００℃で５分間加熱して炭化させることで炭化物を得た。 [Example 1]
Shredded leaf tobacco (Malawi Burley (MWB)) was heated at 250° C. for 36 minutes, and the generated vapor was collected by cooling to obtain a flavor liquid. The amount of nicotine contained in the flavor liquid was 17.6 mg. Next, the residue of the shredded leaf tobacco after heating was pulverized to have an average particle size of 30 μm. 3 parts by mass of ethanol was added to 100 parts by mass of the shredded leaf tobacco residue after pulverization and mixed. The obtained mixture was compressed into a tablet shape using a compression molding machine (trade name: TDP 0, manufactured by LFA Machines Oxford Ltd.). The obtained compression molded product was dried at 20° C. for 2 days to remove ethanol contained in the compression molded product. Thereafter, the compression molded body was carbonized by heating at 500° C. for 5 minutes in a nitrogen atmosphere to obtain a carbide.
　前記炭化物を赤外炉内に配置して８００℃に昇温し、空気を１Ｌ／分の流量で流通させながら８００℃で１０秒保持した。生成した煙をケンブリッジフィルター（ＣＦ）に捕集し、該ＣＦをシクロヘキサンに浸漬させて成分を抽出した。該シクロヘキサン溶液を液体クロマトグラフィーにより分析し、ベンツピレンの含有量を定量した。結果を図３に示す。 The carbide was placed in an infrared furnace, heated to 800°C, and held at 800°C for 10 seconds while flowing air at a flow rate of 1 L/min. The generated smoke was collected on a Cambridge filter (CF), and the CF was immersed in cyclohexane to extract the components. The cyclohexane solution was analyzed by liquid chromatography to determine the content of benzpyrene. The results are shown in Figure 3.
　また、錠剤硬度計を用いて測定される、前記炭化物のくさび型プランジャによる圧縮破断強度は１７Ｎ（３回測定の平均値）であった。 Further, the compressive breaking strength of the carbide with a wedge-shaped plunger, measured using a tablet hardness meter, was 17 N (average value of three measurements).
　［実施例２］
　圧縮成型体を炭化させる際の加熱温度を８００℃に変更した以外は、実施例１と同様に炭化物を製造し、煙中のベンツピレンの含有量を測定した。結果を図３に示す。また、実施例１と同様に該炭化物の圧縮破断強度を測定したところ、圧縮破断強度は２７Ｎ（３回測定の平均値）であった。 [Example 2]
A carbide was produced in the same manner as in Example 1, except that the heating temperature when carbonizing the compression molded body was changed to 800° C., and the content of benzpyrene in the smoke was measured. The results are shown in Figure 3. Moreover, when the compressive breaking strength of the carbide was measured in the same manner as in Example 1, the compressive breaking strength was 27 N (average value of three measurements).
　［実施例３］
　葉たばこ刻（マラウイバーレー（ＭＷＢ））を２５０℃で３６分間加熱し、生成した蒸気を冷却により回収し、香味液を得た。該香味液中に含まれるニコチン量は１７．６ｍｇであった。次に、加熱後の葉たばこ刻の残渣を、窒素雰囲気下、５００℃で５分間加熱して炭化させることで炭化物を得た。錠剤硬度計を用いて測定される、前記炭化物のくさび型プランジャによる圧縮破断強度は１．６Ｎ（３回測定の平均値）であった。 [Example 3]
Shredded leaf tobacco (Malawi Burley (MWB)) was heated at 250° C. for 36 minutes, and the generated vapor was collected by cooling to obtain a flavor liquid. The amount of nicotine contained in the flavor liquid was 17.6 mg. Next, the residue of the shredded leaf tobacco after heating was carbonized by heating at 500° C. for 5 minutes in a nitrogen atmosphere to obtain a carbide. The compressive breaking strength of the carbide using a wedge-shaped plunger was 1.6 N (average value of three measurements), as measured using a tablet hardness meter.
　実施例１～３より、高温加熱（５００～１２００℃）前に予め低温加熱（１５０～３００℃）を実施することで、ニコチンを主成分とする香味成分を香味液として十分に回収することができることが分かった。また、高温加熱後の炭化物を燃焼した場合、ベンツピレンの生成量は少ないことが分かった。これより、前記香味液を前記炭化物にかけ戻すことで、香味液がかけ戻された炭化物（香味材料）は、燃焼した際に、ベンツピレンの生成量が少なく、かつ、十分な量の香味成分を供給できることが理解できる。また、実施例１及び２では圧縮成型体製造工程（２）を実施したため、圧縮成型体製造工程（１）又は（２）を実施しなかった実施例３と比較して、炭化物の圧縮破断強度が高かった。そのため、実施例１及び２の炭化物を紙で巻き上げてたばこロッドを形成する際にもその形状が十分に維持され、巻き上げやすかった。 From Examples 1 to 3, by performing low-temperature heating (150-300°C) before high-temperature heating (500-1200°C), it is possible to sufficiently recover the flavor components containing nicotine as a flavor liquid. I found out that it can be done. Furthermore, it was found that when the carbide was burned after being heated to a high temperature, the amount of benzpyrene produced was small. From this, by pouring the flavor liquid back onto the carbide, the carbide (flavor material) to which the flavor liquid has been poured back produces less benzpyrene and supplies a sufficient amount of flavor components when burned. I can understand what is possible. In addition, in Examples 1 and 2, since the compression molded body manufacturing process (2) was carried out, the compression rupture strength of the carbide was was high. Therefore, even when the carbides of Examples 1 and 2 were rolled up with paper to form a tobacco rod, the shape was sufficiently maintained and it was easy to roll up.
１　　燃焼型香味吸引器
２　　たばこロッド
３　　フィルターセグメント
４　　たばこ充填物
５　　ラッパー
６　　チップペーパー部材 1 Combustion type flavor inhaler 2 Tobacco rod 3 Filter segment 4 Tobacco filling 5 Wrapper 6 Chip paper member

Claims (13)

  1. 　たばこ材料を１５０～３００℃で加熱し、生成した蒸気を回収して香味液を得る工程と、
    　酸素濃度が９％以下の雰囲気下、前記たばこ材料の残渣を５００～１２００℃で加熱して、前記たばこ材料の炭化物を得る工程と、
    　前記たばこ材料の炭化物に前記香味液をかけ戻す工程と、
    を含む、香味材料の製造方法。     heating the tobacco material at 150 to 300°C and collecting the generated vapor to obtain a flavor liquid;
    heating the residue of the tobacco material at 500 to 1200° C. in an atmosphere with an oxygen concentration of 9% or less to obtain a carbide of the tobacco material;
    Sprinkling the flavor liquid back onto the carbonized material of the tobacco material;
    A method for producing a flavoring material, including:
  2. 　前記香味液を得る工程の前に、前記たばこ材料に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の圧縮成型体を得る工程をさらに含む、請求項１に記載の香味材料の製造方法。 Before the step of obtaining the flavor liquid, the tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, the mixture is compression molded, and at least a portion of the alcohol is removed from the mixture. The method for producing a flavor material according to claim 1, further comprising the step of obtaining a compression molded product of tobacco material.
  3. 　前記香味液を得る工程の後であって、前記たばこ材料の炭化物を得る工程の前に、前記たばこ材料の残渣に炭素数２～７のアルコールを混合して混合物を形成し、該混合物を圧縮成型し、該混合物から前記アルコールの少なくとも一部を除去することで、たばこ材料の残渣の圧縮成型体を得る工程をさらに含む、請求項１に記載の香味材料の製造方法。 After the step of obtaining the flavor liquid and before the step of obtaining the carbonized tobacco material, the residue of the tobacco material is mixed with an alcohol having 2 to 7 carbon atoms to form a mixture, and the mixture is compressed. 2. The method for producing a flavor material according to claim 1, further comprising the step of molding and removing at least a portion of the alcohol from the mixture to obtain a compression molded product of tobacco material residue.
  4. 　前記アルコールが、エタノール、２－プロパノール及びベンジルアルコールからなる群から選択される少なくとも一種のアルコールである、請求項２又は３に記載の香味材料の製造方法。 The method for producing a flavor material according to claim 2 or 3, wherein the alcohol is at least one alcohol selected from the group consisting of ethanol, 2-propanol, and benzyl alcohol.
  5. 　錠剤硬度計を用いて測定される、前記たばこ材料の炭化物のくさび型プランジャによる圧縮破断強度が５～２００Ｎである、請求項２～４のいずれか一項に記載の香味材料の製造方法。 The method for producing a flavor material according to any one of claims 2 to 4, wherein the compressive breaking strength of the tobacco material with a wedge-shaped plunger of carbide is 5 to 200 N, as measured using a tablet hardness tester.
  6. 　前記たばこ材料の炭化物を得る工程において、前記たばこ材料の残渣の加熱が不活性ガス雰囲気下で行われる、請求項１～５のいずれか一項に記載の香味材料の製造方法。 The method for producing a flavor material according to any one of claims 1 to 5, wherein in the step of obtaining the carbide of the tobacco material, the residue of the tobacco material is heated in an inert gas atmosphere.
  7. 　前記香味液を得る工程における加熱時間が２０秒～１２０分である、請求項１～６のいずれか一項に記載の香味材料の製造方法。 The method for producing a flavor material according to any one of claims 1 to 6, wherein the heating time in the step of obtaining the flavor liquid is 20 seconds to 120 minutes.
  8. 　前記たばこ材料の炭化物を得る工程における加熱時間が１秒～１０時間である、請求項１～７のいずれか一項に記載の香味材料の製造方法。 The method for producing a flavor material according to any one of claims 1 to 7, wherein the heating time in the step of obtaining the carbide of the tobacco material is 1 second to 10 hours.
  9. 　前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるベンツピレンの量が１００ｎｇ／ｇＷＢ以下である、請求項１～８のいずれか一項に記載の香味材料の製造方法。 The flavor material according to any one of claims 1 to 8, wherein the amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800 ° C. for 10 seconds in an air atmosphere is 100 ng / g WB or less. Production method.
  10. 　前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるニコチンの量が２ｍｇ／ｇＷＢ以上である、請求項１～９のいずれか一項に記載の香味材料の製造方法。 The flavor material according to any one of claims 1 to 9, wherein the amount of nicotine contained in the smoke generated when the flavor material is burned at 800 ° C. for 10 seconds in an air atmosphere is 2 mg / g WB or more. Production method.
  11. 　請求項１～１０のいずれか一項に記載の方法により製造される香味材料。 A flavoring material produced by the method according to any one of claims 1 to 10.
  12. 　たばこ材料の炭化物を含む香味材料であって、
    　前記香味材料を空気雰囲気下８００℃で１０秒間燃焼した際に生成する煙中に含まれるベンツピレンの量が１００ｎｇ／ｇＷＢ以下であり、かつ、該煙中に含まれるニコチンの量が２ｍｇ／ｇＷＢ以上である、香味材料。     A flavoring material containing carbonized tobacco material,
    The amount of benzpyrene contained in the smoke generated when the flavor material is burned at 800° C. for 10 seconds in an air atmosphere is 100 ng/g WB or less, and the amount of nicotine contained in the smoke is 2 mg/g WB or more. A flavoring material.
  13. 　請求項１１又は１２に記載の香味材料を備える燃焼型香味吸引器。 A combustion type flavor inhaler comprising the flavor material according to claim 11 or 12.
PCT/JP2022/029279 2022-07-29 2022-07-29 Flavor ingredient, method for producing same, and combustion-type flavor inhaler WO2024024080A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197494A (en) * 1991-06-04 1993-03-30 R.J. Reynolds Tobacco Company Tobacco extraction process
WO2015029977A1 (en) * 2013-08-27 2015-03-05 日本たばこ産業株式会社 Tobacco raw material, method for manufacturing same, and tobacco product
JP2019503659A (en) * 2015-12-08 2019-02-14 ブリティッシュ アメリカン タバコ （インヴェストメンツ） リミテッドＢｒｉｔｉｓｈ Ａｍｅｒｉｃａｎ Ｔｏｂａｃｃｏ （Ｉｎｖｅｓｔｍｅｎｔｓ） Ｌｉｍｉｔｅｄ Tobacco composition
JP2019213531A (en) * 2013-08-08 2019-12-19 アール・ジエイ・レイノルズ・タバコ・カンパニー Tobacco-derived pyrolysis oil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197494A (en) * 1991-06-04 1993-03-30 R.J. Reynolds Tobacco Company Tobacco extraction process
JP2019213531A (en) * 2013-08-08 2019-12-19 アール・ジエイ・レイノルズ・タバコ・カンパニー Tobacco-derived pyrolysis oil
WO2015029977A1 (en) * 2013-08-27 2015-03-05 日本たばこ産業株式会社 Tobacco raw material, method for manufacturing same, and tobacco product
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