EP4209136A1 - Tabakfüllmaterial, verbrennungsfreier heizgeschmackinhalator und verfahren zur herstellung von tabakfüllmaterial - Google Patents

Tabakfüllmaterial, verbrennungsfreier heizgeschmackinhalator und verfahren zur herstellung von tabakfüllmaterial Download PDF

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Publication number
EP4209136A1
EP4209136A1 EP20952440.4A EP20952440A EP4209136A1 EP 4209136 A1 EP4209136 A1 EP 4209136A1 EP 20952440 A EP20952440 A EP 20952440A EP 4209136 A1 EP4209136 A1 EP 4209136A1
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EP
European Patent Office
Prior art keywords
tobacco
filler
antioxidant
heating
drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20952440.4A
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English (en)
French (fr)
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EP4209136A4 (de
Inventor
Shinya Yoshida
Yuta Yoshimura
Ayaka IGA
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Japan Tobacco Inc
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Japan Tobacco Inc
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Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP4209136A1 publication Critical patent/EP4209136A1/de
Publication of EP4209136A4 publication Critical patent/EP4209136A4/de
Pending legal-status Critical Current

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    • 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
    • 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
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from 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
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • 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
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • 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
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/301—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by aromatic compounds
    • 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
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/308—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances vitamins
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices

Definitions

  • the present invention relates to a tobacco filler, a heat-not-burn-type flavor inhaler, and a method for producing a tobacco filler.
  • TSNA tobacco-specific nitrosamine
  • NNK 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone
  • NNN N'-nitrosonomicotine
  • NAT N'-nitrosoanatabine
  • NAB N'-nitrosoanabasine
  • TSNA is detected in the leaves of tobacco plants before drying.
  • TSNA is generated by nitrosation of alkaloids contained in the leaves of tobacco plants during drying and fermentation of the leaves of tobacco plants and is accumulated in the leaf tobacco.
  • TSNA contained in cigarette smoke is generated via three routes (Non-Patent Literature 1 to 3).
  • the three routes are a route in which TSNA contained in a tobacco filler is transferred directly to the smoke through evaporation, a route in which TSNA is synthesized by nitrosating alkaloids contained in a tobacco filler by utilizing heat during combustion, and a route in which NNK bonded to a lignin-like polymer component is dissociated and transferred to the smoke.
  • Non-Patent Literature 4 TSNA is also contained in a tobacco vapor of a flavor inhaler that heats a tobacco filler without burning it (i.e., a heat-not-burn-type flavor inhaler) (Non-Patent Literature 4).
  • the inventors of the present invention have worked to reduce the amount of TSNA contained in a tobacco vapor of a heat-not-burn-type flavor inhaler (hereinafter also referred to as a "heating-type flavor inhaler").
  • a heat-not-burn-type flavor inhaler hereinafter also referred to as a "heating-type flavor inhaler”
  • the inventors isothermally heated burley cut tobacco at a temperature corresponding to the heating temperature of the heating-type flavor inhaler (i.e., a predetermined temperature in a range of 150 to 350 °C)
  • the amount of TSNA contained in the tobacco vapor to increase and the amount of TSNA contained in the cut tobacco after heating to decrease as the heating temperature was increased.
  • the total amount of TSNA in the tobacco vapor and TSNA in the cut tobacco after heating was larger than the amount of TSNA contained in the cut tobacco before heating. This means that alkaloids and nitrite reacted with each other in the cut tobacco during heating of the cut tobacco and that TSNA was newly generated (see FIG. 1 ).
  • the inventors thought that the amount of TSNA in the tobacco vapor can be reduced by suppressing the reaction of generating TSNA that occurs during heating with the heating-type flavor inhaler.
  • suppressing the reaction of generating TSNA by performing, in advance, an additional reaction step to remove the substrate (alkaloids and nitrite) of the reaction of generating TSNA not only makes the process complicated but also causes a concern that the additional reaction step will affect the smoking flavor.
  • an object of the present invention is to provide a technique relating to a tobacco filler which makes it possible to reduce the amount of TSNA in a tobacco vapor of a heating-type flavor inhaler without performing an additional reaction step in the tobacco filler before incorporating the tobacco filler into the heating-type flavor inhaler.
  • a tobacco filler comprising:
  • a heat-not-burn-type flavor inhaler comprising a flavor source including the tobacco filler according to the first aspect.
  • a method for producing a tobacco filler comprising:
  • a tobacco filler obtainable by the method according to the third aspect.
  • a heat-not-burn-type flavor inhaler comprising a flavor source including the tobacco filler according to the fourth aspect.
  • a technique relating to a tobacco filler which makes it possible to reduce the amount of TSNA in a tobacco vapor of a heating-type flavor inhaler without performing an additional reaction step in the tobacco filler before incorporating the tobacco filler into the heating-type flavor inhaler.
  • a tobacco filler includes:
  • the tobacco filler can be filled into a tobacco product and form a flavor source.
  • the tobacco filler may be in the form of cut tobacco or in the form of a tobacco molded body.
  • the tobacco material is cut tobacco.
  • the tobacco material may be a tobacco material used as a raw material for forming a tobacco molded body or may be a tobacco molded body.
  • tobacco material used as a raw material for forming a tobacco molded body include a ground product of leaf tobacco (hereinafter also referred to as "fine tobacco powder") or a base sheet made of tobacco residue.
  • the “cut tobacco” is obtained by cutting leaf tobacco (i.e., aged tobacco leaves) into a predetermined size suitable for a tobacco product.
  • Leaf tobacco is obtainable by subjecting leaves of tobacco plants to various processes including a drying process in a farm house, and subsequently one to several years of a long-term aging process in a leaf processing facility, as is publicly known in the art.
  • the "tobacco molded body” is obtained by molding a raw material derived from leaf tobacco into a specific shape.
  • the "raw material derived from leaf tobacco” may be a ground product of leaf tobacco, or tobacco residue obtained in extraction treatment of leaf tobacco.
  • the "raw material derived from leaf tobacco” may include waste leaf tobacco (leaf scrap) generated in leaf processing facilities or waste leaf tobacco (cut tobacco scrap) generated in manufacturing facilities.
  • the tobacco molded body may be formed to have a size suitable for being incorporated into a tobacco product. Alternatively, the tobacco molded body may be formed in a large size first, and then cut into a size suitable for being incorporated into a tobacco product.
  • the tobacco molded body is referred to as "sheet tobacco"; and if the raw material derived from leaf tobacco is molded into a granular shape, the tobacco molded body is referred to as "tobacco granules".
  • the sheet tobacco can be formed by a known method such as a papermaking method, a casting method, or a rolling method.
  • the tobacco molded body is formed by a papermaking method, it is referred to as "paper-processed sheet tobacco”; if the tobacco molded body is formed by a casting method, it is referred to as “slurry-processed sheet tobacco”; and if the tobacco molded body is formed by a rolling method, it is referred to as “rolling-processed sheet tobacco”.
  • the tobacco granules can be formed by a known method such as an extrusion granulation method or spray drying.
  • the antioxidant that is used can be, for example, antioxidants known as food additives.
  • examples of the antioxidant include gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p-coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocopherol, dibutylhydroxytoluene (BHT), quinic acid, chlorogenic acid, rutin, scopoletin, and cinnamic acid.
  • One type of antioxidant or multiple types of antioxidants in combination may be used.
  • the antioxidant is preferably at least one selected from the group consisting of gallic acid and erythorbic acid.
  • the antioxidant is contained in the tobacco filler in an amount of 0.25% by mass or more with respect to the tobacco material.
  • the amount of the antioxidant is generally 10% by mass or less with respect to the tobacco material.
  • the antioxidant is contained in the tobacco filler in an amount of, for example, 0.25 to 10% by mass, preferably 0.25 to 5.0% by mass, with respect to the tobacco material. If multiple types of antioxidants are used in combination, the amount of the antioxidant refers to the total amount of the multiple types of antioxidants.
  • a tobacco filler can be, for example, in the form of cut tobacco.
  • a tobacco filler includes cut tobacco and an antioxidant in an amount of 0.25% by mass or more with respect to the cut tobacco, and is in the form of cut tobacco.
  • the tobacco filler according to the first embodiment can be prepared by, for example, spraying a liquid composition containing an antioxidant and a solvent onto cut tobacco, and drying the cut tobacco (see FIG. 3 ).
  • a tobacco filler can be, for example, in the form of a tobacco molded body.
  • the tobacco filler can be in the form of sheet tobacco.
  • a tobacco filler in a second embodiment, includes a base sheet made of tobacco residue, tobacco extract, and an antioxidant in an amount of 0.25% by mass or more with respect to the base sheet made of tobacco residue, and is in the form of sheet tobacco.
  • the tobacco filler according to the second embodiment can be prepared by, for example, molding tobacco residue into a sheet shape by a papermaking technique, coating the obtained base sheet with a liquid composition containing an antioxidant and tobacco extract, and drying the obtained tobacco mixture (see FIG. 4 ).
  • the tobacco filler according to the second embodiment is called "paper-processed sheet tobacco".
  • a tobacco filler in a third embodiment, includes fine tobacco powder and an antioxidant in an amount of 0.25% by mass or more with respect to the fine tobacco powder, and is in the form of sheet tobacco.
  • the tobacco filler according to the third embodiment can be prepared by, for example, mixing fine tobacco powder, an antioxidant, water, and, if necessary, an additive such as a binder, casting the obtained tobacco mixture into a sheet shape, and drying the sheet (see FIG. 5 ).
  • the tobacco filler according to the third embodiment is referred to as "slurry-processed sheet tobacco".
  • a tobacco filler can be in the form of tobacco granules.
  • a tobacco filler includes fine tobacco powder and an antioxidant in an amount of 0.25% by mass or more with respect to the fine tobacco powder, and is in the form of tobacco granules.
  • the tobacco filler according to the fourth embodiment can be prepared by, for example, mixing fine tobacco powder, an antioxidant, water, and, if necessary, an additive such as a binder, granulating the obtained tobacco mixture into a granular shape, and drying the granules (see FIG. 6 ).
  • the tobacco fillers described above can be used in a heating-type flavor inhaler.
  • the tobacco fillers described above can cause a reaction between the nitrite in the tobacco material and the antioxidant utilizing thermal energy generated by heating during use of the heating-type flavor inhaler, thereby suppressing the reaction of generating TSNA and reducing the amount of TSNA in the tobacco vapor, as shown in FIG. 2 .
  • the above tobacco fillers can reduce the amount of TSNA in the tobacco vapor through the reaction utilizing the thermal energy generated during use of the heating-type flavor inhaler, as described above, it is unnecessary to perform an additional reaction step in the tobacco fillers in order to reduce the amount of TSNA. Therefore, the above tobacco fillers can achieve the effect of reducing the amount of TSNA without complicating the preparation process, as compared with conventional tobacco fillers. In addition, since the above tobacco fillers do not require an additional reaction step for reducing the amount of TSNA, they excel in terms of having no possibility of negatively affecting the quality characteristics (such as a smoking flavor) and physical characteristics (such as bulkiness) of the tobacco fillers.
  • the tobacco fillers described above fulfill the effect of reducing the amount of TSNA through the reaction of the antioxidant with the nitrite in the tobacco material utilizing the thermal energy generated during use of the heating-type flavor inhaler. Therefore, the antioxidant in the tobacco fillers is required to remain in the tobacco fillers without reacting with the nitrite in the tobacco material until a user uses the heating-type flavor inhaler.
  • the inventors of the present invention have experimentally confirmed that a reaction between an antioxidant and nitrite occurs almost not at all when heating is performed at 110 °C for 10 minutes in the presence of a predetermined amount of moisture, but may occur when heating is performed at a higher temperature or for a longer period of time or in the presence of a larger amount of moisture (see Example 2 below).
  • a tobacco filler is not exposed to a high temperature condition that may cause a reaction between an antioxidant and nitrite, in the course of distribution of a heating-type flavor inhaler or in the course of storage by a user.
  • the antioxidant can remain in the tobacco filler without reacting with nitrite, until a user uses the heating-type flavor inhaler.
  • a method for producing a tobacco filler includes:
  • the "liquid” as used herein can be a solvent of the antioxidant (generally, water or alcohol such as ethanol), tobacco extract obtained by extraction treatment of leaf tobacco, a liquid for suspending the tobacco material (generally, water), or a combination thereof.
  • the expression "until incorporation of the tobacco filler into a heat-not-burn-type flavor inhaler is completed" may refer to "until the tobacco filler is incorporated into a main body of a heating-type flavor inhaler by a manufacturer” or "until the tobacco filler is incorporated by a manufacturer into a refill tobacco article (such as a tobacco stick), which is a component of a heating-type flavor inhaler.”
  • the tobacco mixture and the tobacco filler are not placed under conditions that allow the antioxidant and the nitrite derived from the tobacco material to react with each other until the incorporation of the tobacco filler into the heating-type flavor inhaler is completed.
  • the tobacco filler produced by the above method allows the antioxidant to remain without reacting with the nitrite derived from the tobacco material until a user uses the heating-type flavor inhaler, and allows the antioxidant to react with the nitrite only through the thermal energy generated during use of the heating-type flavor inhaler (see FIG. 2 ).
  • "maintaining the tobacco mixture and the tobacco filler under a condition for suppressing a reaction between the antioxidant and nitrite derived from the tobacco material until incorporation of the tobacco filler into a heating-type flavor inhaler is completed" can be achieved by performing the drying of the tobacco mixture under conditions that do not allow the antioxidant and the nitrite derived from the tobacco material to react with each other.
  • the above-described maintenance can be achieved by performing the drying of the tobacco mixture under conditions of
  • the heating temperature is, for example, 35 to 110 °C.
  • the heating time is, for example, 1 to 10 minutes.
  • the moisture content is, for example, 20 to 400% by mass.
  • the heat-drying under the above conditions can efficiently dry the tobacco mixture and can also prevent the antioxidant from reacting with the nitrite derived from the tobacco material and being consumed.
  • the "moisture content at a start of drying” determined by this formula indicates a mass % of the water contained in the liquid added to the tobacco material when the tobacco mixture is prepared.
  • the “total mass of tobacco material and additive in tobacco mixture” indicates a mass of the tobacco mixture excluding the added water.
  • the above-described maintenance can be achieved by performing the drying of the tobacco mixture under conditions of:
  • the heat-drying under such conditions can more reliably prevent the antioxidant from reacting with the nitrite derived from the tobacco material and being consumed, while efficiently drying the tobacco mixture.
  • the above-described maintenance can be achieved by allowing the tobacco mixture to stand at room temperature without heating it.
  • the above-described maintenance can be achieved by allowing the tobacco mixture to stand under the conditions of a temperature of 7 to 40 °C and a relative humidity of 40 to 80%.
  • the tobacco mixture can be left to stand for an appropriate period until the tobacco mixture is dried, for example, for 2 to 365 days.
  • allowing the tobacco mixture to stand under the above conditions is also referred to as "conditioned drying".
  • a method for producing a tobacco filler includes:
  • the liquid as used herein can be a solvent of the antioxidant (generally, water or alcohol such as ethanol), a liquid for suspending the tobacco material (generally, water), tobacco extract obtained by extraction treatment of leaf tobacco, or a combination thereof.
  • a solvent of the antioxidant generally, water or alcohol such as ethanol
  • a liquid for suspending the tobacco material generally, water
  • tobacco extract obtained by extraction treatment of leaf tobacco or a combination thereof.
  • a tobacco filler can be, for example, in the form of cut tobacco.
  • a method for producing a tobacco filler in the form of cut tobacco is shown in FIG. 3 .
  • a method for producing a tobacco filler can include:
  • a tobacco mixture can be prepared by spraying a liquid composition containing an antioxidant and a solvent onto cut tobacco.
  • a tobacco mixture can be prepared by immersing cut tobacco in a liquid composition containing an antioxidant and a solvent.
  • the "cut tobacco” is obtained by cutting leaf tobacco into a predetermined size suitable for a tobacco product.
  • the "antioxidant” that is used can be, for example, antioxidants known as food additives.
  • the antioxidant include gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocopherol, dibutylhydroxytoluene (BHT), quinic acid, chlorogenic acid, rutin, scopoletin, and cinnamic acid.
  • One type of antioxidant or multiple types of antioxidants in combination may be used.
  • the antioxidant is preferably at least one selected from the group consisting of gallic acid and erythorbic acid.
  • the antioxidant is added to the tobacco material so as to be contained in an amount of, for example, 0.25% by mass or more with respect to the tobacco material.
  • the amount of the antioxidant is generally 10% by mass or less with respect to the tobacco material.
  • the antioxidant is added to the tobacco material in an amount of, for example, 0.25 to 10% by mass, and preferably 0.25 to 5.0% by mass, with respect to the tobacco material. If multiple types of antioxidants are used in combination, the amount of the antioxidant refers to the total amount of the multiple types of antioxidants.
  • water or alcohol such as ethanol can be used as the "solvent".
  • the solvent is preferably used in an amount as small as possible for the efficiency of the subsequent drying.
  • the solvent can be used in an amount of, for example, 0.1 to 12000% by mass with respect to the antioxidant.
  • the tobacco mixture can be dried by performing heat-drying under conditions of:
  • the tobacco mixture is preferably not dried by heat-drying. That is, the tobacco mixture is preferably dried by being left to stand for, for example, 2 to 365 days under conditions of a temperature of 7 to 40 °C and a relative humidity of 40 to 80%.
  • the tobacco mixture is preferably dried to an extent that will minimize a fracture caused by physical impact in the subsequent manufacturing steps or the like, and an example thereof is to perform drying until a tobacco mixture having a moisture content of about 13% by mass is obtained at the end of the drying.
  • a tobacco filler is obtained by drying the tobacco mixture.
  • the tobacco filler is incorporated into a heating-type flavor inhaler, whereby a heating-type flavor inhaler is manufactured.
  • the tobacco filler may be incorporated into a main body of a heating-type flavor inhaler, or may be incorporated into a refill tobacco article, which is a component of a heating-type flavor inhaler.
  • the tobacco filler may be incorporated into a tobacco stick by wrapping the tobacco filler with cigarette paper, or may be incorporated into a tobacco refill by containing the tobacco filler in a refill container.
  • the tobacco filler may be incorporated into a heating-type flavor inhaler by being mixed with an ordinary tobacco filler not containing an antioxidant, or may be incorporated into a heating-type flavor inhaler by itself without being mixed with the ordinary tobacco filler.
  • the tobacco filler In the process of being incorporated into a heating-type flavor inhaler, the tobacco filler is not exposed to a high temperature condition.
  • the tobacco mixture and the tobacco filler can be maintained under the conditions for suppressing a reaction between the antioxidant and nitrite derived from cut tobacco until the incorporation of the tobacco filler into the heating-type flavor inhaler is completed.
  • a tobacco filler can be, for example, in the form of a tobacco molded body.
  • a tobacco filler can be in the form of sheet tobacco.
  • FIG. 4 shows a method for producing a tobacco filler in the form of paper-processed sheet tobacco.
  • a method for producing a tobacco filler can include:
  • the tobacco mixture can be prepared, for example, as follows. First, tobacco residue and tobacco extract are prepared by extraction treatment of leaf tobacco using hot water. The tobacco residue is molded into a sheet shape by a papermaking technique, and the obtained base sheet is coated with a liquid composition containing an antioxidant and the tobacco extract. In this manner, a tobacco mixture can be prepared.
  • the base sheet it is preferable to coat the base sheet with a liquid composition containing an antioxidant and the tobacco extract as soon as the liquid composition is prepared, in order to eliminate the possibility of the antioxidant reacting with nitrite contained in the tobacco extract.
  • this embodiment involves coating the base sheet with an antioxidant, an antioxidant can be uniformly applied to the entire base sheet. Accordingly, the effect of the antioxidant can be uniformly exhibited over the entire tobacco filler.
  • the tobacco mixture can be dried by performing heat-drying under the following conditions, as described above:
  • the tobacco mixture is preferably dried to an extent that will minimize a fracture caused by physical impact in the subsequent manufacturing steps or the like, and an example thereof is to perform drying until a tobacco mixture having a water content of about 13% by mass is obtained at the end of the drying.
  • a tobacco filler in the form of paper-processed sheet tobacco is obtained by drying the tobacco mixture.
  • the tobacco filler is in the form of paper-processed sheet tobacco.
  • the tobacco filler is cut into an appropriate size (such as a size equivalent to that of ordinary cut tobacco), if necessary, and then incorporated into a heating-type flavor inhaler. In this manner, a heating-type flavor inhaler is manufactured.
  • the tobacco filler is not exposed to a high temperature condition in the process of being incorporated into a heating-type flavor inhaler.
  • the tobacco mixture and the tobacco filler can be maintained under a condition for suppressing a reaction between the antioxidant and nitrite derived from the tobacco residue and/or the tobacco extract until the incorporation of the tobacco filler into the heating-type flavor inhaler is completed.
  • a tobacco filler in the form of paper-processed sheet tobacco can be produced by another method. Specifically, first, a base sheet made of tobacco residue is prepared by a papermaking technique, and coated with tobacco extract, whereby ordinary paper-processed sheet tobacco (containing no antioxidant) is prepared. Then, a liquid composition containing an antioxidant and a solvent is sprayed onto the ordinary paper-processed sheet tobacco, followed by drying. In this manner as well, a tobacco filler in the form of paper-processed sheet tobacco can be produced.
  • the spraying and drying can be performed in the same manner as in the case of the tobacco filler in the form of cut tobacco. That is, the drying is preferably not performed by heat-drying; specifically, the drying is preferably performed by allowing the tobacco mixture to stand for, for example, 2 to 365 days under the conditions of a temperature of 7 to 40 °C and a relative humidity of 40 to 80%.
  • FIG. 5 shows a method for producing a tobacco filler in the form of slurry-processed sheet tobacco.
  • a method for producing a tobacco filler can include:
  • an antioxidant is added to a raw material slurry (e.g., a mixture of fine tobacco powder, water, a binder, and glycerin) used in the preparation of ordinary slurry-processed sheet tobacco.
  • a raw material slurry e.g., a mixture of fine tobacco powder, water, a binder, and glycerin
  • an antioxidant can be uniformly added to an entire raw material slurry. Accordingly, the effect of the antioxidant can be uniformly exhibited over the entire tobacco filler.
  • the molding and drying of the tobacco mixture can be performed by:
  • the tobacco mixture is preferably dried to an extent that will minimize a fracture caused by physical impact in the subsequent manufacturing steps or the like, and an example thereof is to perform drying until a tobacco mixture having a moisture content of about 13% by mass is obtained at the end of the drying.
  • a tobacco filler in the form of slurry-processed sheet tobacco is obtained by drying the tobacco mixture.
  • the tobacco filler is in the form of slurry-processed sheet tobacco.
  • the tobacco filler is cut into an appropriate size (such as a size equivalent to that of ordinary cut tobacco), if necessary, and then incorporated into a heating-type flavor inhaler. In this manner, a heating-type flavor inhaler is manufactured.
  • the tobacco filler is not exposed to a high temperature condition in the process of being incorporated into a heating-type flavor inhaler.
  • the tobacco mixture and the tobacco filler can be maintained under a condition for suppressing a reaction between the antioxidant and nitrite derived from the fine tobacco powder until the incorporation of the tobacco filler into the heating-type flavor inhaler is completed.
  • a tobacco filler in the form of slurry-processed sheet tobacco can be produced by another method.
  • a tobacco filler in the form of slurry-processed sheet tobacco can also be produced by preparing ordinary slurry-processed sheet tobacco (containing no antioxidant), spraying a liquid composition containing an antioxidant and a solvent onto the ordinary slurry-processed sheet tobacco, and drying the slurry-processed sheet tobacco.
  • the spraying and drying can be performed in the same manner as in the case of the tobacco filler in the form of cut tobacco. That is, the drying is preferably not performed by heat-drying; specifically, the drying is preferably performed by allowing the tobacco mixture to stand for, for example, 2 to 365 days under the conditions of a temperature of 7 to 40 °C and a relative humidity of 40 to 80%.
  • a tobacco filler can be in the form of tobacco granules.
  • FIG. 6 shows a method for producing a tobacco filler in the form of tobacco granules.
  • a method for producing a tobacco filler can include:
  • an antioxidant is added to a raw material mixed solution (e.g., a mixture of fine tobacco powder, water, and a binder) used in the preparation of ordinary tobacco granules.
  • a raw material mixed solution e.g., a mixture of fine tobacco powder, water, and a binder
  • an antioxidant can be uniformly added to an entire raw material mixed solution. Accordingly, the effect of the antioxidant can be uniformly exhibited over the entire tobacco filler.
  • the molding and drying of the tobacco mixture can be performed by:
  • the molding and drying may occur substantially simultaneously.
  • the tobacco mixture is preferably dried to an extent that will minimize a fracture caused by physical impact in the subsequent manufacturing steps or the like, and an example thereof is to perform drying until a tobacco mixture having a moisture content of about 13% by mass is obtained at the end of the drying.
  • a tobacco filler in the form of tobacco granules is obtained by drying the tobacco mixture.
  • the tobacco filler is in the form of tobacco granules.
  • the tobacco granules are incorporated into a heating-type flavor inhaler, whereby a heating-type flavor inhaler is manufactured.
  • the tobacco filler is not exposed to a high temperature condition in the process of being incorporated into a heating-type flavor inhaler.
  • the tobacco mixture and the tobacco filler can be maintained under a condition for suppressing a reaction between the antioxidant and nitrite derived from the fine tobacco powder until the incorporation of the tobacco filler into the heating-type flavor inhaler is completed.
  • a tobacco filler in the form of tobacco granules can be produced by another method.
  • a tobacco filler in the form of tobacco granules can also be produced by preparing ordinary tobacco granules (containing no antioxidant), spraying a liquid composition containing an antioxidant and a solvent onto the ordinary tobacco granules, and drying the tobacco granules.
  • the spraying and drying can be performed in the same manner as for the tobacco filler in the form of cut tobacco. That is, the drying is preferably not performed by heat-drying; specifically, the drying is preferably performed by allowing the tobacco mixture to stand for, for example, 2 to 365 days under the conditions of a temperature of 7 to 40 °C and a relative humidity of 40 to 80%.
  • the method for producing a tobacco filler differs from the existing method only in that an antioxidant is added to a raw material, and is a simple method.
  • a tobacco filler produced by the method described above allows the antioxidant to remain without reacting with the nitrite derived from the tobacco material until a user uses the heating-type flavor inhaler, and allows the antioxidant to react with the nitrite only through the thermal energy generated during use of the heating-type flavor inhaler (see FIG. 2 ).
  • the above tobacco filler can reduce the amount of TSNA in the tobacco vapor through the reaction utilizing the thermal energy generated during use of the heating-type flavor inhaler, as described above, it is unnecessary to perform an additional reaction step in the tobacco filler in order to reduce the amount of TSNA. Therefore, the above tobacco filler can achieve the effect of reducing the amount of TSNA without complicating the preparation process, as compared with conventional tobacco fillers. In addition, since the above tobacco filler does not require an additional reaction step for reducing the amount of TSNA, it excels in terms of having no possibility of negatively affecting the quality characteristics (such as a smoking flavor) and physical characteristics (such as bulkiness) of the tobacco filler.
  • a heat-not-burn-type flavor inhaler containing a flavor source including the tobacco filler described in ⁇ 1. Tobacco Filler>.
  • a heat-not-burn-type flavor inhaler containing a flavor source including the tobacco filler produced by the method described in ⁇ 2. Method for Producing Tobacco Filler>.
  • the expression "the above tobacco filler” used in the following description refers to both the tobacco filler described in ⁇ 1. Tobacco Filler> and the tobacco filler produced by the method described in ⁇ 2. Method for Producing Tobacco Filler>.
  • a heat-not-burn-type flavor inhaler containing the above tobacco filler (hereinafter simply referred to as a "heating-type flavor inhaler”) has the same configuration as those of the existing heating-type flavor inhalers except that a part or whole of the tobacco filler of the existing heating-type flavor inhalers is replaced with the above tobacco filler.
  • the above tobacco filler can have a size equivalent to that of ordinary cut tobacco.
  • the above tobacco filler may be used alone as the flavor source of the heating-type flavor inhaler, or used in combination with ordinary cut tobacco, ordinary sheet tobacco, or the like as the flavor source of the heating-type flavor inhaler. That is, the above tobacco filler can be incorporated into a heating-type flavor inhaler in an amount of 5 to 100% by mass with respect to the entire tobacco filler (i.e., flavor source) of the heating-type flavor inhaler.
  • the flavor source including the above tobacco filler is heated to a temperature of, for example, 150 °C or higher.
  • the flavor source including the above tobacco filler is heated to a temperature of preferably 150 to 400 °C, and more preferably 200 to 400 °C.
  • the heating-type flavor inhaler containing the above tobacco filler can cause a reaction between the nitrite in the tobacco material and the antioxidant utilizing thermal energy generated by heating during use of the heating-type flavor inhaler, thereby suppressing the reaction of generating TSNA and reducing the amount of TSNA in the tobacco vapor, as shown in FIG. 2 .
  • heating-type flavor inhaler examples include:
  • a heating-type flavor inhaler including:
  • the heating-type flavor inhaler may further include an aerosol source.
  • the aerosol source may be included in admixture with the flavor source or may be included in a separate compartment from the flavor source (e.g., on an upstream side of the flavor source).
  • the heater may be built in a main body of the heating-type flavor inhaler that contains the flavor source, or may be provided as a separate device from a refill tobacco article (such as a tobacco stick) that contains the flavor source.
  • a heating-type flavor inhaler including:
  • the aerosol source may be included in an admixture with the flavor source.
  • FIG. 7 is a perspective view showing an example of a heating-type flavor inhaler.
  • FIG. 8 is a diagram showing an internal structure of a tobacco stick.
  • FIG. 9 is a diagram showing an internal structure of an aerosol-generation device.
  • a heating-type flavor inhaler 100 includes:
  • the tobacco stick 110 is a replaceable cartridge and has a columnar shape extending along the longitudinal direction.
  • the tobacco stick 110 is configured to generate aerosol and a flavor component by being heated while being inserted into the aerosol-generation device 120.
  • the tobacco stick 110 includes a base portion 11A including a filler 111 and first cigarette paper 112 wrapped around the filler 111, and a mouthpiece portion 11B forming an end opposite to the base portion 11A.
  • the base portion 11A and the mouthpiece portion 11B are connected by second cigarette paper 113.
  • the mouthpiece portion 11B includes a paper tube portion 114, a filter portion 115, and a hollow segment portion 116 disposed between the paper tube portion 114 and the filter portion 115.
  • the paper tube portion 114 is a paper tube formed by winding paper in a cylindrical shape, and has a hollow inside.
  • the filter portion 115 includes a filter material such as acetate tow.
  • the hollow segment portion 116 includes a filling layer having one or more hollow channels. The filter material of the filter portion 115 and the filling layer of the hollow segment portion 116 are connected by being covered with a plug wrapper 117.
  • the filling layer is formed of fibers and has a high filling density of fibers; therefore, during inhalation, air or aerosol flows only through the hollow channel and hardly flows through the filling layer.
  • the tobacco stick 110 when the decrease of aerosol components through filtration in the filter portion 115 is desired to be diminished, it is effective to shorten the length of the filter portion 115 and replace it with the hollow segment portion 116 in order to increase a delivery amount of aerosol.
  • the mouthpiece portion 11B is composed of three segments, the mouthpiece portion 11B may be composed of one or two segments, or may be composed of four or more segments.
  • the hollow segment portion 116 may be omitted, and the paper tube portion 114 and the filter portion 115 may be disposed adjacent to each other to form the mouthpiece portion 11B.
  • the longitudinal length of the tobacco stick 110 is preferably 40 to 90 mm, more preferably 50 to 75 mm, and still more preferably 50 to 60 mm.
  • the circumference of the tobacco stick 110 is preferably 15 to 25 mm, more preferably 17 to 24 mm, and still more preferably 20 to 23 mm.
  • the base portion 11A may have a length of 20 mm
  • the paper tube portion 114 may have a length of 20 mm
  • the hollow segment portion 116 may have a length of 8 mm
  • the filter portion 115 may have a length of 7 mm, and the lengths of these individual segments can be changed as appropriate according to production suitability, required quality, and the like.
  • the filler 111 includes: a flavor source including the above tobacco filler; and an aerosol source.
  • the aerosol source is heated at a predetermined temperature to generate aerosol.
  • the aerosol source may be, for example, glycerin, propylene glycol, triacetin, 1,3-butanediol, and a mixture thereof.
  • the content of the aerosol source in the filler 111 is not particularly limited, and from the viewpoint of generating a sufficient amount of aerosol and providing a good smoking flavor, the content is usually 5% by mass or more, preferably 10% by mass or more, and usually 50% by mass or less, preferably 20% by mass or less.
  • the tobacco filler is, for example, in the form of cut tobacco or in the form of a tobacco molded body, as described above. If the tobacco filler is in the form of cut tobacco, it may be in the form of cut tobacco obtained by cutting leaf tobacco (i.e., aged tobacco leaves) into widths of, for example, 0.8 to 1.2 mm. Alternatively, if the tobacco filler is in the form of sheet tobacco, it may be in the form of elongated sheet tobacco obtained by cutting sheet tobacco into widths of, for example, 0.8 to 1.2 mm, or may be in the form of corrugated sheet tobacco obtained by gathering sheet tobacco without cutting it.
  • the content of the filler 111 in the tobacco stick 110 is, for example, 200 to 400 mg, and preferably 250 to 320 mg.
  • the moisture content of the filler 111 is, for example, 8 to 18% by mass, and preferably 10 to 16% by mass. Such a moisture content suppresses generation of a stain on the wrapping paper and improves roll-up machinability during manufacture of the base portion 11A.
  • the same cigarette paper, tipping paper, and plug wrapper as those used in a cigarette can be used.
  • the aerosol-generation device 120 includes an insertion hole 130 into which the tobacco stick 110 can be inserted. That is, the aerosol-generation device 120 includes an inner tubular member 132 constituting the insertion hole 130.
  • the inner tubular member 132 may be formed of a heat conductive member such as aluminum or stainless steel (SUS).
  • the aerosol-generation device 120 may include a lid portion 140 that closes the insertion hole 130.
  • the lid portion 140 is configured to be slidable between a state where the insertion hole 130 is closed and a state where the insertion hole 130 is exposed (see FIG. 7 ).
  • the aerosol-generation device 120 may include an air flow path 160 communicating with the insertion hole 130.
  • One end of the air flow path 160 is connected to the insertion hole 130, while the other end of the air flow path 160 communicates with the outside (outside air) of the aerosol-generation device 120 at a portion different from the insertion hole 130.
  • the aerosol-generation device 120 may include a lid portion 170 that covers an end portion of the air flow path 160 on the side communicating with the outside air.
  • the lid portion 170 can cover the end portion of the air flow path 160 on the side communicating with the outside air, or can expose the air flow path 160.
  • the lid portion 170 does not air-tightly close the air flow path 160 even in a state of covering the air flow path 160. That is, even in a state where the lid portion 170 covers the air flow path 160, the outside air can flow into the air flow path 160 via the vicinity of the lid portion 170.
  • the user holds, in the mouth, one end portion of the tobacco stick 110, specifically, the mouthpiece portion 11B shown in FIG. 8 , and performs an inhalation action.
  • the outside air flows into the air flow path 160 through the user's inhalation action.
  • the air flowing into the air flow path 160 passes through the tobacco stick 110 in the insertion hole 130 and is guided into an oral cavity of the user.
  • the aerosol-generation device 120 may include a temperature sensor in the air flow path 160 or on an outer surface of a wall portion constituting the air flow path 160.
  • the temperature sensor may be, for example, a thermistor, a thermocouple, or the like.
  • the aerosol-generation device 120 includes a battery 10, a control unit 20, and a heater 30.
  • the battery 10 stores electric power for use in the aerosol-generation device 120.
  • the battery 10 may be a chargeable and dischargeable secondary battery.
  • the battery 10 may be, for example, a lithium ion battery.
  • the heater 30 may be provided around the inner tubular member 132.
  • the space accommodating the heater 30 and the space accommodating the battery 10 may be separated from each other by a partition wall 180. This can prevent the air heated by the heater 30 from flowing into the space accommodating the battery 10. Therefore, an increase in the temperature of the battery 10 can be suppressed.
  • the heater 30 preferably has a tubular shape capable of heating the outer periphery of the columnar tobacco stick 110.
  • the heater 30 may be, for example, a film heater.
  • the film heater may include a pair of film-like substrates and a resistance heating element sandwiched between the pair of substrates.
  • the film-like substrate is preferably made of a material excellent in heat resistance and electrical insulating properties, and is typically made of polyimide.
  • the resistance heating element is preferably made of one or two or more metal materials such as copper, nickel alloy, chromium alloy, stainless steel, and platinum rhodium, and may be formed of, for example, a base material made of stainless steel. Further, in order to connect the resistance heating element to a power source by a flexible printed circuit (FPC), copper plating may be applied to a connection portion and a lead portion thereof.
  • FPC flexible printed circuit
  • a heat-shrinkable tube may be provided outside the heater 30.
  • the heat-shrinkable tube is a tube that shrinks in a radial direction through heat, and is made of, for example, a thermoplastic elastomer.
  • the heater 30 is pressed against the inner tubular member 132 by the contraction action of the heat-shrinkable tube. This increases the adhesion between the heater 30 and the inner tubular member 132, thereby increasing conduction of the heat from the heater 30 to the tobacco stick 110 via the inner tubular member 132.
  • the aerosol-generation device 120 may include a tubular thermal insulator on the outer side of the heater 30 in the radial direction, preferably on the outer side of the heat-shrinkable tube.
  • the thermal insulator may serve to prevent the outer surface of the housing of the aerosol-generation device 120 from reaching an excessively high temperature by blocking the heat of the heater 30.
  • the thermal insulator may be made of an aerogel such as a silica aerogel, a carbon aerogel, or an alumina aerogel.
  • the aerogel as a thermal insulator may typically be a silica aerogel having high thermal insulation performance and relatively low manufacturing costs.
  • the thermal insulator may be a fiber-based thermal insulator such as glass wool or rock wool, or a foam-based thermal insulator such as urethane foam or phenolic foam.
  • the thermal insulator may be a vacuum thermal insulator.
  • the thermal insulator may be provided between the inner tubular member 132 facing the tobacco stick 110 and an outer tubular member 134 outside the thermal insulator.
  • the outer tubular member 134 may be formed of a heat conductive member such as aluminum or stainless steel (SUS). It is preferable that the thermal insulator be provided in the sealed space.
  • the control unit 20 may include a control board, a CPU, a memory, and the like.
  • the aerosol-generation device 120 may include a notification unit for notifying the user of various kinds of information under the control of the control unit 20.
  • the notification unit may be, for example, a light emitting element such as an LED, a vibration element, or a combination thereof.
  • the control unit 20 Upon detecting an activation request from the user, the control unit 20 starts supplying power from the battery 10 to the heater 30.
  • the activation request from the user is made by, for example, an operation of a push button or a slide switch by the user, or an inhalation action of the user.
  • the activation request from the user may be made by pressing a push button 150. More specifically, the activation request from the user may be made by pressing the push button 150 in a state where the lid portion 140 is opened.
  • the activation request from the user may be made by detection of an inhalation action of the user.
  • the user's inhalation action can be detected by, for example, such a temperature sensor as described above.
  • a tobacco filler including:
  • [A5] The tobacco filler according to any one of [A1] to [A4], wherein the tobacco material is a ground product of leaf tobacco (that is, fine tobacco powder), and the tobacco filler is in a form of sheet tobacco.
  • the tobacco material is a ground product of leaf tobacco (that is, fine tobacco powder)
  • the tobacco filler is in a form of sheet tobacco.
  • [A6] The tobacco filler according to any one of [A1] to [A4], wherein the tobacco material is a base sheet made of tobacco residue, and the tobacco filler is in a form of sheet tobacco.
  • [A9] The tobacco filler according to any one of [A1] to [A8], wherein the antioxidant is at least one selected from the group consisting of gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p-coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocopherol, dibutylhydroxytoluene (BHT), quinic acid, chlorogenic acid, rutin, scopoletin, and cinnamic acid.
  • the antioxidant is at least one selected from the group consisting of gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p-coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocophe
  • a method for producing a tobacco filler including:
  • a method for producing a tobacco filler including:
  • [C10] The method according to any one of [C7] to [C9], wherein the heating temperature is 50 to 110 °C, the heating time is 1 to 10 minutes, and the moisture content is 25 to 400% by mass.
  • [C15] The method according to any one of [C1] to [C14], wherein the tobacco material is a ground product of leaf tobacco (that is, fine tobacco powder), the liquid is water, the tobacco filler is in a form of sheet tobacco, and the method further includes molding the tobacco mixture into a sheet-shaped tobacco molded body before the drying.
  • the tobacco material is a ground product of leaf tobacco (that is, fine tobacco powder)
  • the liquid is water
  • the tobacco filler is in a form of sheet tobacco
  • the method further includes molding the tobacco mixture into a sheet-shaped tobacco molded body before the drying.
  • [C16] The method according to any one of [C1] to [C14], wherein the tobacco material is a base sheet made of tobacco residue, the liquid is tobacco extract, and the tobacco filler is in a form of sheet tobacco.
  • [C20] The method according to any one of [C1] to [C19], wherein the antioxidant is at least one selected from the group consisting of gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p-coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocopherol, dibutylhydroxytoluene (BHT), quinic acid, chlorogenic acid, rutin, scopoletin, and cinnamic acid.
  • the antioxidant is at least one selected from the group consisting of gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p-coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocopherol,
  • [Dl] A tobacco filler obtainable by the method according to any one of [C1] to [C26].
  • Example 1 the effect of addition of an antioxidant to a tobacco material on the amount of TSNA contained in a tobacco vapor was evaluated.
  • Burley cut tobacco was used as a tobacco material.
  • the cut tobacco was sprayed with a liquid composition containing an antioxidant and a solvent and subjected to conditioned drying (22 °C, 60% RH, 2 days).
  • the solvent used was either water or ethanol.
  • Conditioned drying refers to drying in an air-conditioned environment without heating. In this manner, a tobacco filler in the form of cut tobacco was prepared.
  • a tobacco filler in the form of cut tobacco was prepared in the same manner except that the liquid composition was not sprayed onto the cut tobacco.
  • a base sheet was prepared by molding the tobacco residue into a sheet with a papermaking technique.
  • the base sheet made of the tobacco residue was coated with the tobacco extract with an antioxidant added thereto, and heat-drying at normal pressure (heating temperature: 100 °C, heating time: 8 minutes, moisture content at a start of drying: 50% by mass) was performed.
  • heat-drying at normal pressure (heating temperature: 100 °C, heating time: 8 minutes, moisture content at a start of drying: 50% by mass) was performed.
  • a tobacco filler in the form of paper-processed sheet tobacco was prepared. This type of tobacco filler is referred to as "paper-processed sheet tobacco A".
  • a tobacco filler in the form of paper-processed sheet tobacco was prepared in the same manner except that tobacco extract with no antioxidant added thereto was used.
  • a tobacco material part (i.e., paper-processed sheet tobacco) of a tobacco stick of Ploom S product (MEVIUS REGULAR TASTE for Ploom S, JAPAN TOBACCO INC.) was sprayed with a liquid composition containing an antioxidant and a solvent and subjected to conditioned drying (22 °C, 60% RH, 2 days). Depending on the type of antioxidant, the solvent used was either water or ethanol. In this manner, a tobacco filler in the form of paper-processed sheet tobacco was prepared. This type of tobacco filler is referred to as "paper-processed sheet tobacco B".
  • a tobacco filler in the form of paper-processed sheet tobacco was prepared in the same manner except that the liquid composition was not sprayed onto the paper-processed sheet tobacco.
  • the raw material slurry was cast on a heated metal plate and dried while adjusting the thickness (heating temperature: 110 °C, heating time: 10 minutes, moisture content at a start of drying: 400% by mass). In this manner, a tobacco filler in the form of slurry-processed sheet tobacco was prepared.
  • a tobacco filler in the form of slurry-processed sheet tobacco was prepared in the same manner except that no antioxidant was added to the raw material slurry.
  • Tables 1 to 3 The types and amounts of the antioxidants added are shown in Tables 1 to 3.
  • the amounts of the antioxidants added are represented by mass % with respect to the tobacco material (cut tobacco, base sheet made of tobacco residue, or fine tobacco powder).
  • the heating of the tobacco filler for generating a tobacco vapor was performed using a heating furnace (infrared furnace) that uses infrared lamps as heat sources, or using the heating-type flavor inhaler (product name: Ploom S, JAPAN TOBACCO INC.) shown in FIGS. 7 to 9 .
  • a heating furnace infrared furnace
  • the heating-type flavor inhaler product name: Ploom S, JAPAN TOBACCO INC.
  • TSNA total amount of the four components, which are 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), N'-nitrosonomicotine (NNN), N'-nitrosoanatabine (NAT), and N'-nitrosoanabasine (NAB).
  • An infrared gold image furnace (ADVANCE RIKO, Inc.) was used as an infrared furnace.
  • the tobacco filler i.e., a) cut tobacco, b) paper-processed sheet tobacco A, or d) slurry-processed sheet tobacco
  • the "attained temperature” shown in Tables 1 and 2 is a value obtained by measuring the temperature of the tobacco filler with a thermocouple.
  • the amount of TSNA in the tobacco filler before heating and the amount of TSNA in the tobacco vapor released from the tobacco filler during heating were measured.
  • the amount of TSNA in the tobacco filler was measured according to an official method (CORESTA METHOD in accordance with CRM72). Specifically, an internal standard solution and 0.1 M ammonium acetate were added to a sample of the tobacco filler, followed by shaking, dilution, and filtration, and the amount of TSNA was measured by UPLC/MS/MS.
  • the amount of TSNA in the tobacco vapor was measured according to an official method (CORESTA METHOD in accordance with CRM75). Specifically, first, a tobacco vapor generated by heating the tobacco filler with the infrared furnace was collected by the glass fiber filter. An internal standard solution and 0.1 M ammonium acetate were added to the glass fiber filter that collected the tobacco vapor, followed by shaking, dilution, and filtration, and the amount of TSNA was measured by HPLC/MS/MS.
  • the heating-type flavor inhaler (product name: Ploom S, JAPAN TOBACCO INC.) shown in FIGS. 7 to 9 was used as a heating-type flavor inhaler.
  • a tobacco stick was prepared using a tobacco filler containing an antioxidant or a tobacco filler containing no antioxidant (control). Specifically, a tobacco stick was prepared by taking out the tobacco material part of the tobacco stick of the Ploom S product (see FIG. 8 ) and adding 0.26 g of the above-described "paper-processed sheet tobacco B" instead.
  • a tobacco vapor released from the tobacco stick was collected, and the amount of TSNA in the tobacco vapor was measured.
  • Seven puffs of tobacco vapor were collected under inhalation conditions corresponding to the Canadian Intensive Regimen (CIR) (i.e., puff volume: 55 mL, puff duration: 2 seconds, puff frequency: 2 times/minute, filter ventilation portion closed: none).
  • CIR Canadian Intensive Regimen
  • the temperature inside the tobacco stick was about 200 °C.
  • Tobacco filler Antioxidant Drying conditions for preparing tobacco filler Heating conditions Amount of TSNA [ng/g] Type Addition amount [Mass %] Attained temperature [°C] Isothermal heating time [Second] Antioxidant Not added Antioxidant Added A1 Cut tobacco Gallic acid 0.9 Conditioned drying 200 360 7997 7154 A2 Cut tobacco Gallic acid 2.8 Conditioned drying 200 360 7997 5681 A3 Cut tobacco Gallic acid 4.5 Conditioned drying 200 360 7997 5678 A4 Cut tobacco Gallic acid 2.8 Conditioned drying 200 360 1847 1561 B1 Cut tobacco Erythorbic acid 2.8 Conditioned drying 200 360 1664 854 B2 Cut tobacco Ascorbic acid 2.8 Conditioned drying 200 360 1842 1309 B3 Cut tobacco Catechin 2.8 Conditioned drying 200 360 1842 1257 B4 Cut tobacco Gallic acid 2.8 Conditioned drying 200 360 1842 1488 B5 Cut tobacco P-coumaric acid 2.8 Conditioned drying 200 360 1664 1202 B6 Cut tobacco Fer
  • Tobacco filler Antioxidant Drying conditions for preparing tobacco filler Heating conditions Amount of TSNA [ng/g] Type Addition amount [Mass %] Attained temperature [°C] Isothermal heating time [Second] Antioxidant Not added Antioxidant Added D1 Cut tobacco Gallic acid 2.8 Conditioned drying 200 360 1919 1414 D2 Cut tobacco Gallic acid 2.8 Conditioned drying 250 360 3184 2178 D3 Cut tobacco Gallic acid 2.8 Conditioned drying 300 360 3948 2862 D4 Cut tobacco Ascorbic acid 2.8 Conditioned drying 200 360 1919 1558 D5 Cut tobacco Ascorbic acid 2.8 Conditioned drying 250 360 3184 2641 D6 Cut tobacco Ascorbic acid 2.8 Conditioned drying 300 360 3948 3024 D7 Cut tobacco Catechin 2.8 Conditioned drying 200 360 1919 1312 D8 Cut tobacco Catechin 2.8 Conditioned drying 250 360 3184 2056 D9 Cut tobacco Catechin 2.8 Conditioned drying 300 360 3948 2906 E1 Cut tobacco Catechin 2.8 Conditioned drying 2010 19
  • Tobacco filler Antioxidant Drying conditions for preparing tobacco filler Inhalation conditions Amount of TSNA [ng/g] Type Addition Amount [Mass %] Inhalation conditions Number of puffs Antioxidant Not added Antioxidant Added H1 Paper-processed sheet tobacco B Gallic acid 2.1 Conditioned drying CIR 7 20.5 16.9 H2 Paper-processed sheet tobacco B Erythorbic acid 2.1 Conditioned drying CIR 7 26.4 19.0 H3 Paper-processed sheet tobacco B Ascorbic acid 2.1 Conditioned drying CIR 7 28.7 21.4 H4 Paper-processed sheet tobacco B Catechin 2.1 Conditioned drying CIR 7 20.5 17.7 H5 Paper-processed sheet tobacco B Ferulic acid 2.1 Conditioned drying CIR 7 20.5 18.5 H6 Paper-processed sheet tobacco B Caffeic acid 2.1 Conditioned drying CIR 7 28.7 20.7 I1 Paper-processed sheet tobacco B Erythorbic acid 0.5 Conditioned drying CIR 7 22.1 19.4 I
  • the amount of TSNA is represented by the mass of TSNA per 1 g mass of the tobacco filler [ng/g].
  • the amount og TSNA shown in the row where the "heating condition” or the “inhalation condition” is specified represents the amount of TSNA in the tobacco vapor, and the amount of TSNA shown in the row where the "heating condition” or the “inhalation condition” is not specified reperesents the amount of TSNA in the tobacco filler before heating with the heating- type flavor inhaler.
  • Experiments A1 to A4 the amount of the antioxidant added was varied as shown in Table 1.
  • the tobacco material burley cut tobacco from the U.S. was used in Experiments A1 to A3, and burley cut tobacco from Malawi was used in Experiment A4.
  • Experiments B1 to B10 the type of antioxidant was varied as shown in Table 1. Burley cut tobacco from Malawi was used in Experiments B1 to B10.
  • the amount of the antioxidant added is preferably 10% by mass or less with respect to the tobacco material in consideration of the cost-effectiveness and the influence on the smoking flavor.
  • This temperature range is a temperature range used for heating a tobacco filler in a general heating-type flavor inhaler. Therefore, this result demonstrates that the tobacco filler according to the present invention is suitable for use in a general heating-type flavor inhaler, such as a heating-type flavor inhaler that heats a tobacco filler to a temperature of 150 °C or higher.
  • a tobacco filler containing an antioxidant (catechin) and a tobacco filler containing no antioxidant (catechin) were prepared, and the obtained tobacco fillers were stored in a conditioned room (22 °C, 60% RH) for 4 months. After storage, the amounts of TSNA in the tobacco fillers were measured.
  • Experiment F1 a tobacco filler containing an antioxidant (gallic acid) and a tobacco filler containing no antioxidant (gallic acid) were prepared, and the obtained tobacco fillers were stored in a conditioned room (22 °C, 60% RH) for 4 months. After storage, the amounts of TSNA in the tobacco fillers were measured.
  • a tobacco filler containing an antioxidant (ascorbic acid) and a tobacco filler containing no antioxidant (ascorbic acid) were prepared, and the obtained tobacco fillers were stored in a conditioned room (22 °C, 60% RH) for 4 months. After storage, the amounts of TSNA in the tobacco fillers were measured.
  • the tobacco fillers were heated by an infrared furnace; however, in the following experiments, tobacco fillers were incorporated into a tobacco stick and heated by a heating-type flavor inhaler.
  • the amount of TSNA in the tobacco vapor was also successfully reduced as in the case where the tobacco fillers were heated by an infrared furnace.
  • Example 2 the effect of the drying conditions for preparation of a tobacco filler on the amount of TSNA contained in the tobacco filler was evaluated.
  • a tobacco filler containing an antioxidant (gallic acid) and a tobacco filler containing no antioxidant (gallic acid) were prepared as described below.
  • Slurry S1 and S2 were prepared by blending the materials shown in Table 4 below at the blending ratios (parts by mass) shown in the table, and stirring and mixing them together for 30 minutes using a mechanical stirrer.
  • Table 4 Fine tobacco powder Glycerin Binder (Guar gum) Conifer pulp Gallic acid Water Slurry S1 80 15 2 3 0 400 Slurry S2 79 15 2 3 1 400
  • slurry S3 and S4 were prepared as follows. Slurry S3 was prepared by taking slurry S1, adding water thereto in an amount corresponding to 40% by mass of slurry S1, and stirring and mixing them together using a mechanical stirrer. Likewise, slurry S4 was prepared by taking slurry S2, adding water thereto in an amount corresponding to 40% by mass of slurry S2, and stirring and mixing them together using a mechanical stirrer.
  • Slurries S1 to S4 were each cast on a resin-made thin film sheet "NITOFLON” (Nitto Denko Corporation) using an applicator. Then, the slurry on the thin film sheet was heat-dried by being left to stand on a stainless steel plate heated in advance to a predetermined temperature in a drying oven. Sheet tobacco was thus prepared.
  • NITOFLON Nito Denko Corporation
  • the prepared sheet tobacco was moisture-conditioned for 48 hours under conditioning conditions (22 °C, 60% RH), and then each sheet of sheet tobacco was peeled off from the thin film sheet and ground with a mill to prepare a ground product of sheet tobacco.
  • the amount of TSNA in the ground product of sheet tobacco prepared was measured according to an official method (CORESTA METHOD in accordance with CRM72). The analysis was repeated twice and the average value was calculated.
  • Table 6 shows the results of measuring the amount of TSNA.
  • Experiment No. Drying temperature [°C] Drying time [Minute] Moisture content [%DB] Amount of TSNA [ng/g] Ratio of amounts of TSNA [Antioxidant added / No antioxidant added] No antioxidant added Antioxidant added J1 110 10 400 3686 3669 1.00 J2 120 10 400 4243 3913 0.92 J3 110 is 400 3764 3512 0.93 J4 110 10 600 3608 3482 0.97
  • the amount of TSNA in the tobacco filler is represented by the mass of TSNA per 1 g mass of the tobacco filler [ng/g].
  • Example 3 the influence of addition of an antioxidant on a smoking flavor was evaluated.
  • a tobacco stick including a tobacco filler containing an antioxidant and a tobacco stick including a tobacco filler containing no antioxidant were prepared as described below.
  • a tobacco material part of a tobacco stick of Ploom S product (MEVIUS REGULAR TASTE for Ploom S, JAPAN TOBACCO INC.) was taken out, sprayed with a liquid composition containing an antioxidant and a solvent, and subjected to conditioned drying (22 °C, 60% RH, 2 days). Depending on the type of antioxidant, the solvent used was either water or ethanol. The obtained tobacco filler was returned to the original tobacco stick to prepare a tobacco stick (1).
  • Either erythorbic acid, gallic acid, catechin, or ascorbic acid was used as the antioxidant.
  • a tobacco stick of Ploom S product (MEVIUS REGULAR TASTE for Ploom S, JAPAN TOBACCO INC.) was used as a tobacco stick (2).
  • a sensory evaluation was performed by a panel of five in-house experts. Specifically, the tobacco sticks (1) and (2) were smoked using a Ploom S device (see FIG. 9 ), and the smoking flavors were compared between the tobacco stick (1) and the tobacco stick (2).
  • the tobacco stick (1) containing the antioxidant was felt to have a smoother smoking flavor as a whole, but the smoking flavor was not apparently impaired by the addition of the antioxidant.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacture Of Tobacco Products (AREA)
EP20952440.4A 2020-09-03 2020-09-03 Tabakfüllmaterial, verbrennungsfreier heizgeschmackinhalator und verfahren zur herstellung von tabakfüllmaterial Pending EP4209136A4 (de)

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PCT/JP2020/033467 WO2022049703A1 (ja) 2020-09-03 2020-09-03 たばこ充填材、非燃焼加熱型香味吸引器、およびたばこ充填材の製造方法

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ZA75351B (en) * 1974-02-15 1976-01-28 Hoffmann La Roche Treatment of smoking material
JPS58141775A (ja) * 1982-02-16 1983-08-23 サントリー株式会社 タバコ用フイルタ−
US4516590A (en) * 1982-11-26 1985-05-14 Philip Morris Incorporated Air-cured bright tobacco filler, blends and smoking articles
US5829449A (en) * 1997-09-19 1998-11-03 Thione International, Inc. Smoking products containing antioxidants
JP2002238536A (ja) * 2001-02-13 2002-08-27 Marine Bio Kk 活性酸素成分含有タバコ煙の抑止方法、およびタバコ
US6789546B2 (en) * 2001-06-26 2004-09-14 Technion Research & Development Foundation Ltd. Filters for preventing or reducing tobacco smoke-associated injury in the aerodigestive tract of a subject
JP2003310234A (ja) * 2002-04-22 2003-11-05 Wataru Murota 煙草から発生する有害物質を低減せしめる燃焼方法、及び副流煙からニコチン、タール、アンモニアを効率的に低減せしめる方法
CN100381083C (zh) * 2003-04-29 2008-04-16 韩力 一种非可燃性电子喷雾香烟
EP1847189B1 (de) 2005-01-06 2015-07-29 Japan Tobacco Inc. Kohlenstoffhaltige hitzequellenzusammensetzung für nicht für die verbrennung bestimmten rauchartikel
WO2010110226A1 (ja) 2009-03-23 2010-09-30 日本たばこ産業株式会社 非燃焼タイプ香味吸引物品
EP2571385B1 (de) * 2010-05-21 2017-01-11 Hzat Llc. Verfahren zur herstellung eines tabakextrakts für elektronische rauchvorrichtungen
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EP4209136A4 (de) 2024-05-01
TW202209986A (zh) 2022-03-16

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