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
  • A24B15/18—Treatment of tobacco products or tobacco substitutes
  • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/46—Shape or structure of electric heating means

Definitions

• the present invention relates to a method for processing tobacco raw materials, tobacco raw materials, a non-combustion heating type flavor inhaler, and a non-combustion heating type flavor inhalation system.
• combustion-type flavor inhalers cigarettes
• non-combustion heating-type flavor inhalers which obtain flavor by heating the tobacco raw material instead of burning it.
• the tobacco raw material contains sugar, which is decomposed when the tobacco raw material is heated and is detected in the smoke as a furan analogue.
• furan analogues have a unique sweet aroma, it may be desirable to reduce this aroma depending on the type of non-combustion heating-type flavor inhaler.
• methods for processing tobacco raw materials include, for example, the methods disclosed in Patent Documents 1 to 5.
• the present invention aims to provide a method for processing tobacco raw materials that can reduce the amount of furan analogues contained in the smoke generated when the tobacco raw materials are heated, tobacco raw materials obtained by the method, and a non-combustion heating type flavor inhaler and non-combustion heating type flavor inhalation system that contain the tobacco raw materials.
• a method for processing tobacco raw materials comprising:
• a flue-cured tobacco raw material in which the total mass of furan, 2-methylfuran, furfural, 2-acetylfuran, 5-methylfuran, furfuryl alcohol, furyl hydroxymethyl ketone, and 5-hydroxymethylfurural in the smoke generated when 0.2 g of the flue-cured tobacco raw material is heated at 300°C for 5 minutes is 410 ⁇ g or less.
• a non-combustion heating type flavor inhaler according to [13], a heating device for heating the tobacco raw material of the non-combustion heating type flavor inhaler;
• a non-combustion heating type flavor inhalation system comprising:
• the present invention provides a method for processing tobacco raw materials that can reduce the amount of furan analogues contained in the smoke generated when the tobacco raw materials are heated, tobacco raw materials obtained by the method, and a non-combustion heating type flavor inhaler and a non-combustion heating type flavor inhalation system that contain the tobacco raw materials.
• FIG. 2 is a cross-sectional view showing an example of a non-combustion heating type flavor inhaler according to the present embodiment.
• FIG. 1 is a cross-sectional view showing an example of a non-combustion heating type flavor inhalation system according to the present embodiment, in which (a) a state before a non-combustion heating type flavor inhaler is inserted into a heating device, and (b) a state in which the non-combustion heating type flavor inhaler is inserted into the heating device and heated.
• the tobacco raw material processing method includes the following steps: a step of adding a basic substance to the tobacco raw material to prepare a tobacco raw material with a pH of 8 or higher (hereinafter also referred to as the "basic substance adding step”); and a step of heating the tobacco raw material with a pH of 8 or higher until the pH becomes 6.3 or lower (hereinafter also referred to as the "heating step”).
• the furan analogues contained in the smoke produced when tobacco raw materials are heated mainly include furan, 2-methylfuran, furfural, 2-acetylfuran, 5-methylfuran, furfuryl alcohol, furylhydroxymethylketone, and 5-hydroxymethylfurural. These furan analogues are not originally contained in tobacco raw materials, or if they are present, they are present in extremely small amounts. It is presumed that the majority of the furan analogues contained in the smoke produced when tobacco raw materials are heated are produced by the thermal decomposition of sugars (mainly trisaccharides: glucose, fructose, and sucrose) contained in the tobacco raw materials. Therefore, if the content of sugars (especially trisaccharides) contained in the tobacco raw materials can be reduced, it is believed that the amount of furan analogues contained in the smoke produced when tobacco raw materials are heated can be reduced.
• sugars mainly trisaccharides: glucose, fructose, and sucrose
• a basic substance is first added to the tobacco raw material to prepare a tobacco raw material with a pH of 8 or more.
• the pH of typical tobacco raw materials is generally 4.0 to 6.0.
• the decomposition reaction of sugars during heat treatment is facilitated.
• the tobacco raw material with a pH of 8 or more is heated until the pH becomes 6.3 or less.
• the pH of the tobacco raw material with a pH of 8 or more decreases as it is heated. This is because acidic substances such as formic acid and acetic acid are generated as decomposition products as the decomposition of sugars in the tobacco raw material progresses.
• the pH of the tobacco raw material as an indicator, it is possible to determine how much sugar has been decomposed (and therefore how much furan analogues contained in the smoke generated when the processed tobacco raw material is heated can be reduced).
• the method according to the present embodiment by making the pH of the tobacco raw material after heating 6.3 or less, sugars are sufficiently decomposed, and furan analogues contained in the smoke generated when the processed tobacco raw material is heated can be sufficiently reduced.
• the amount of each flavor component produced when the tobacco raw material is heated varies depending on the pH of the tobacco raw material.
• the pH of the processed tobacco raw material obtained by the method of this embodiment is 6.3 or less, which is equivalent to the pH of unprocessed tobacco raw material (approximately 4.0 to 6.0). Therefore, with the method of this embodiment, the amount of furan analogues produced during heating is reduced, while the amount of useful flavor components other than furan analogues can be made equivalent to that of unprocessed tobacco raw material.
• a basic substance is added to the tobacco raw material to prepare a tobacco raw material with a pH of 8 or more.
• the tobacco raw material to be treated may be the entire tobacco or any part of the tobacco, and examples of the part include leaves, veins, stems, roots, flowers, and mixtures thereof. Examples of varieties of tobacco raw material include flue-cured, burley, native, and oriental leaves. These may be used alone or in combination of two or more.
• the variety of tobacco raw material is flue-cured.
• An example of a tobacco raw material that has a naturally low sugar content is the Burley variety.
• the yellow variety is rich in useful flavor precursors other than sugar (e.g., 3-oxo-alpha-ionol, solavetivone, malic acid, proline, palmitic acid, etc.)
• the Burley variety is poor in these.
• the sugar content can be selectively reduced, particularly when heated in a closed space, so that when flue-cured tobacco is used as the variety of tobacco raw material, a tobacco raw material with a low sugar content but a high content of other useful flavor precursors can be obtained.
• the state of the tobacco raw material used may be fresh leaves immediately after harvest that have not been dried, or may be leaves that have been dried or aged after harvest, or a combination of these may be used.
• rib tobacco, expanded tobacco, etc. obtained by processing these tobacco raw materials may also be used.
• tobacco sheets (reconstituted tobacco) made using tobacco extracts obtained from these tobacco raw materials may also be used. These may be used alone or in combination.
• Basic substances to be added to the tobacco raw material include, for example, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium hydroxide, potassium hydroxide, etc. These may be used alone or in combination of two or more.
• the method of adding the basic substance includes a method in which a solution of the basic substance dissolved in a solvent such as water is sprayed onto the tobacco raw material, and a method in which the basic substance is directly added to a tobacco slurry or tobacco water extract produced during the manufacturing process of regenerated tobacco.
• the pH of the tobacco raw material is adjusted to 8 or higher, preferably 8.1 or higher, and more preferably 8.2 or higher.
• the upper limit of the pH range of the tobacco raw material is preferably 9.0 or lower, and more preferably 8.5 or lower, from the viewpoint of suppressing the amount of volatilization of components that are desirable for flavor when tobacco is made basic.
• the pH of the tobacco raw material is measured by the following method. 0.5 g W.B. of the tobacco raw material is placed in a 20 mL screw cap flask, and 5 mL of ultrapure water (trade name: Milli-Q) is added. Shake at 200 rpm for 30 minutes. The pH of the contents of the screw cap flask is measured using a pH meter (trade name: pH measuring electrode 0040-10D Meter F-72, manufactured by Horiba, Ltd.).
• Heating process the tobacco raw material with a pH of 8 or more obtained in the basic substance addition step is heated until the pH becomes 6.3 or less.
• the heating is preferably performed in a closed space (i.e., in a sealed space). Examples of heating in a closed space include heating in a sealed autoclave. By performing heating in a closed space, the amount of furan analogues can be reduced more than by performing heating in an open space, and the contents of nicotine and other useful flavor precursors contained in the tobacco raw material can be sufficiently maintained.
• the heating is preferably performed under pressure.
• the pressure in the pressurization can be, for example, 0.05 to 0.3 MPa (gauge pressure).
• the heating temperature in the heating is preferably 100 to 200°C. By setting the heating temperature to 100°C or higher, the sugar decomposition reaction proceeds more rapidly and the pH is sufficiently reduced. Furthermore, by setting the heating temperature to 200°C or lower, the generation of unpleasant odors such as raw odors and burnt odors can be suppressed.
• the heating temperature in the heating is more preferably 100 to 150°C, and even more preferably 100 to 130°C.
• the heating time in the heating step depends on the heating temperature, but is preferably between 30 minutes and 4 hours.
• a heating time of 30 minutes or more allows the sugar decomposition reaction to proceed sufficiently, and the pH to drop sufficiently.
• a heating time of 4 hours or less can suppress an excessive drop in pH, and can prevent changes in the amount of each flavor component produced when the tobacco raw material is heated.
• the heating time in the heating step is more preferably between 1 and 4 hours, and even more preferably between 2 and 4 hours. Note that the heating time refers to the heating time after the set temperature is reached, and does not include the time for heating and cooling.
• the pH of the tobacco raw material after heating is 6.3 or less, preferably 6 or less, and more preferably 5.5 or less.
• the lower limit of the range of the pH of the tobacco raw material after heating is preferably 4.0 or more, and more preferably 4.5 or more, from the viewpoint of preventing changes in the amount of each flavor component produced when the tobacco raw material is heated.
• the pH of the tobacco raw material is measured by the method described above.
• the tobacco raw material may be dried or conditioned under a specified temperature and humidity environment.
• the amount of sugar (trisaccharide) consisting of glucose, fructose and sucrose contained in 1 g of tobacco raw material after processing by the method according to the present embodiment is preferably 40 mg or less.
• the amount of the trisaccharide contained in 1 g of tobacco raw material after processing is more preferably 30 mg or less, even more preferably 25 mg or less, and particularly preferably 20 mg or less.
• the lower limit of the range of the amount of the trisaccharide contained in 1 g of tobacco raw material after processing is not particularly limited, but can be, for example, 5 mg or more.
• the amount of the trisaccharide contained in the tobacco raw material after processing can be measured by the following method.
• the amount of the trisaccharide can be measured by subjecting the extract obtained by extracting 1 g of tobacco raw material after processing with ultrapure water to high performance liquid chromatography.
• the amount of nicotine contained in 1 g of processed tobacco raw material after processing by the method according to this embodiment is preferably 10 mg or more. By having a nicotine content of 10 mg or more, a sufficient flavor can be obtained when heated.
• the amount of nicotine contained in 1 g of processed tobacco raw material is more preferably 12 mg or more, and even more preferably 15 mg or more.
• the upper limit of the range of the amount of nicotine contained in 1 g of processed tobacco raw material is not particularly limited, but can be, for example, 30 mg or less.
• the amount of nicotine contained in the processed tobacco raw material can be measured by the following method. The amount of nicotine can be measured by adding 1 mol/L sodium hydroxide to 1 g of processed tobacco raw material, extracting it with hexane, and subjecting the resulting extract to gas chromatography.
• the amount of sugars (trisaccharides) consisting of glucose, fructose, and sucrose contained in 1 g of processed tobacco raw material is 40 mg or less, and the amount of nicotine contained in 1 g of processed tobacco raw material is 10 mg or more, since this ensures a supply of nicotine while reducing the amount of furan analogues generated during heating.
• the total mass of furan, 2-methylfuran, furfural, 2-acetylfuran, 5-methylfuran, furfuryl alcohol, furyl hydroxymethyl ketone, and 5-hydroxymethylfurural (hereinafter also referred to as eight furan analogues) in the smoke generated is preferably 410 ⁇ g or less.
• the unique sweet aroma derived from the furan analogues can be sufficiently reduced.
• the total mass of the eight furan analogues in the smoke generated when 0.2 g of treated tobacco raw material is heated at 300°C for 5 minutes is more preferably 400 ⁇ g or less, even more preferably 350 ⁇ g or less, and particularly preferably 300 ⁇ g or less.
• the total mass of the eight furan analogues in the smoke produced when 0.2 g of treated tobacco raw material is heated at 300°C for five minutes is measured using the following method. 0.2 g of treated tobacco raw material is heated at 300°C for five minutes in an infrared gold image furnace under a nitrogen atmosphere. The smoke produced during this process is collected using a Cambridge filter and methanol at -70°C, and the total mass of the eight furan analogues is measured using gas chromatography.
• the flue-cured tobacco raw material according to the present embodiment contains 40 mg or less of sugar (trisaccharide) consisting of glucose, fructose, and sucrose in 1 g of the flue-cured tobacco raw material, and contains 10 mg or more of nicotine in 1 g of the flue-cured tobacco raw material.
• 1 g of a general flue-cured tobacco raw material usually contains more than 50 mg of trisaccharide.
• the amount of trisaccharide contained in 1 g of the flue-cured tobacco raw material is 40 mg or less, so that the amount of furan analogues contained in the smoke generated when the tobacco raw material is heated is small, and the unique sweet aroma derived from the furan analogues can be reduced.
• the amount of nicotine contained in 1 g of the flue-cured tobacco raw material is 10 mg or more, so that a sufficient flavor can be obtained when heated.
• the flue-cured tobacco raw material according to the present embodiment can be suitably produced by treating the flue-cured tobacco raw material with the tobacco raw material treatment method according to the present embodiment.
• the amount of trisaccharide contained in 1 g of flue-cured tobacco raw material is preferably 30 mg or less, more preferably 25 mg or less, and even more preferably 20 mg or less.
• the lower limit of the range of the amount of trisaccharide contained in 1 g of flue-cured tobacco raw material is not particularly limited, but can be, for example, 5 mg or more.
• the amount of trisaccharide contained in 1 g of flue-cured tobacco raw material can be measured in the same manner as the amount of trisaccharide contained in the tobacco raw material after processing described above.
• the amount of nicotine contained in 1 g of flue-cured tobacco raw material is preferably 12 mg or more, and more preferably 15 mg or more.
• the upper limit of the range of the amount of nicotine contained in 1 g of flue-cured tobacco raw material is not particularly limited, but can be, for example, 30 mg or less.
• the amount of nicotine contained in 1 g of flue-cured tobacco raw material can be measured in the same manner as the amount of nicotine contained in the tobacco raw material after processing described above.
• the amount of malic acid contained in 1 g of flue-cured tobacco raw material is preferably 30 mg or more.
• Malic acid is a useful flavor precursor, and by having an amount of malic acid contained in 1 g of flue-cured tobacco raw material of 30 mg or more, the quality of the flavor is improved.
• the amount of malic acid contained in 1 g of flue-cured tobacco raw material is more preferably 31 mg or more, and even more preferably 32 mg or more.
• the upper limit of the range of the amount of malic acid contained in 1 g of flue-cured tobacco raw material is not particularly limited, but can be, for example, 40 mg or less.
• the amount of malic acid contained in 1 g of flue-cured tobacco raw material can be measured by the following method.
• the amount of malic acid can be measured by subjecting the extract obtained by extracting 1 g of flue-cured tobacco raw material with ultrapure water to a capillary electrophoresis system.
• the total mass of furan, 2-methylfuran, furfural, 2-acetylfuran, 5-methylfuran, furfuryl alcohol, furyl hydroxymethyl ketone, and 5-hydroxymethylfurural (eight furan analogues) in the smoke generated when 0.2 g of the flue-cured tobacco raw material is heated at 300° C. for five minutes is 410 ⁇ g or less.
• the total mass of the eight furan analogues in the smoke generated when 0.2 g of a general flue-cured tobacco raw material is heated at 300° C. for five minutes usually exceeds 1000 ⁇ g.
• the total mass of the eight furan analogues in the smoke generated when 0.2 g of the flue-cured tobacco raw material is heated at 300° C. for five minutes is 410 ⁇ g or less, so that the unique sweet aroma derived from the furan analogues generated during heating is low.
• the flue-cured tobacco raw material according to the present embodiment can be suitably produced by treating the flue-cured tobacco raw material with the tobacco raw material treatment method according to the present embodiment.
• the total mass of the eight furan analogues in the smoke generated when 0.2 g of flue-cured tobacco raw material is heated at 300°C for 5 minutes is preferably 400 ⁇ g or less, more preferably 350 ⁇ g or less, and even more preferably 300 ⁇ g or less.
• the lower limit of the range of the total mass of the eight furan analogues in the smoke generated when 0.2 g of flue-cured tobacco raw material is heated at 300°C for 5 minutes is not particularly limited, but can be, for example, 50 mg or more.
• the total mass of the eight furan analogues in the smoke generated when 0.2 g of flue-cured tobacco raw material is heated at 300°C for 5 minutes can be measured in the same manner as the total mass of the eight furan analogues in the smoke generated when 0.2 g of the tobacco raw material after the above-mentioned treatment is heated at 300°C for 5 minutes.
• Non-combustion heating type flavor inhaler includes the tobacco raw material according to the present embodiment. Because the non-combustion heating type flavor inhaler according to the present embodiment includes the tobacco raw material according to the present embodiment, the unique sweet aroma derived from furan analogues that is generated during use (when heated) is reduced.
• FIG. 1 An example of a non-combustion heating type flavor inhaler according to this embodiment is shown in FIG. 1.
• the non-combustion heating type flavor inhaler 1 shown in FIG. 1 includes a tobacco-containing segment 2 filled with the tobacco raw material according to this embodiment, a cylindrical cooling segment 3 having perforations 8 on its circumference, a center hole segment 4, and a filter segment 5.
• the non-combustion heating type flavor inhaler according to this embodiment may include other segments in addition to the tobacco-containing segment, the cooling segment, the center hole segment, and the filter segment.
• the axial length of the non-combustion heating type flavor inhaler according to the present embodiment is not particularly limited, but is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, and even more preferably 50 mm or more and 60 mm or less.
• the circumferential length of the non-combustion heating type flavor inhaler is preferably 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less.
• the length of the tobacco-containing segment may be 20 mm
• the length of the cooling segment may be 20 mm
• the length of the center hole segment may be 8 mm
• the length of the filter segment may be 7 mm.
• the length of the filter segment may be selected within a range of 4 mm or more and 10 mm or less.
• the airflow resistance of the filter segment may be selected to be 15 mmH 2 O/seg or more and 60 mmH 2 O/seg or less per segment.
• the tobacco raw material according to this embodiment is filled into cigarette paper (hereinafter also referred to as a wrapper).
• the method for filling the tobacco raw material into the cigarette paper is not particularly limited, but for example, the tobacco raw material may be wrapped in the wrapper, or the tobacco raw material may be filled into a cylindrical wrapper.
• the tobacco raw material has a longitudinal direction, such as a rectangular shape, the tobacco raw material may be filled so that the longitudinal direction is in an unspecified direction within the wrapper, or the tobacco raw material may be filled and aligned so that the longitudinal direction is in the axial direction of the tobacco-containing segment 2 or perpendicular to the axial direction.
• the cooling segment 3 may be formed of a cylindrical member 7.
• the cylindrical member 7 may be, for example, a cardboard tube formed into a cylindrical shape.
• the tubular member 7 and the mouthpiece lining paper 12 described below are provided with perforations 8 that penetrate both.
• the presence of the perforations 8 allows outside air to be introduced into the cooling segment 3 during inhalation.
• the vaporized components of the aerosol generated by heating the tobacco-containing segment 2 come into contact with the outside air, and as their temperature drops, they are liquefied to form an aerosol.
• the diameter (distance across) of the perforations 8 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less.
• the number of perforations 8 is not particularly limited, and may be one or two or more. For example, multiple perforations 8 may be provided around the circumference of the cooling segment 3.
• the amount of outside air introduced through the perforations 8 is preferably 85% by volume or less, more preferably 80% by volume or less, relative to the total volume of gas inhaled by the user.
• This is also called the ventilation ratio.
• the lower limit of the ventilation ratio range is preferably 55% by volume or more, more preferably 60% by volume or more.
• the cooling segment may also be a segment comprising a sheet of suitable construction material that is crinkled, pleated, gathered or folded.
• the cross-sectional profile of such an element may exhibit randomly oriented channels.
• the cooling segment may also comprise a bundle of longitudinally extending tubes. Such a cooling segment may be formed, for example, by wrapping the pleated, gathered or folded sheet material with a paper wrapper.
• the axial length of the cooling segment can be, for example, 7 mm or more and 28 mm or less, for example, 18 mm.
• the cooling segment can also be substantially circular in its axial cross-sectional shape, and its diameter can be, for example, 5 mm or more and 10 mm or less, for example, about 7 mm.
• the center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper (inner wrapping paper) covering the filling layer.
• the center hole segment 4 is composed of a first filling layer 9 having a hollow part and a first inner plug wrapper 10 covering the first filling layer 9.
• the center hole segment 4 has a function of increasing the strength of the mouthpiece segment 6.
• the first filling layer 9 can be, for example, a rod with an inner diameter of ⁇ 1.0 mm or more and ⁇ 5.0 mm or less, which is filled with cellulose acetate fibers at a high density and hardened by adding a plasticizer containing triacetin at 6% by mass or more and 20% by mass or less relative to the mass of cellulose acetate. Since the first filling layer 9 has a high fiber filling density, air and aerosol flow only through the hollow part during inhalation, and hardly flow inside the first filling layer 9. Since the first filling layer 9 inside the center hole segment 4 is a fiber filling layer, the touch from the outside during use is less likely to cause discomfort to the user. It is also possible that the center hole segment 4 does not have the first inner plug wrapper 10 and its shape is maintained by thermoforming.
• the configuration of the filter segment 5 is not particularly limited, and may be composed of one or more packed layers. The outside of the packed layer may be wrapped with one or more wrapping papers.
• the airflow resistance per segment of the filter segment 5 can be appropriately changed depending on the amount and material of the packing filled in the filter segment 5. For example, when the packing is cellulose acetate fiber, the airflow resistance can be increased by increasing the amount of cellulose acetate fiber filled in the filter segment 5. When the packing is cellulose acetate fiber, the packing density of the cellulose acetate fiber can be 0.13 to 0.18 g/cm 3.
• the airflow resistance is a value measured by an airflow resistance measuring device (product name: SODIMAX, manufactured by SODIM).
• the circumferential length of the filter segment 5 is not particularly limited, but is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm.
• the axial length of the filter segment 5 can be selected from 4 to 10 mm, and is selected so that the airflow resistance is, for example, 15 to 60 mmH 2 O/seg.
• the axial length of the filter segment 5 is preferably 5 to 9 mm, and more preferably 6 to 8 mm.
• the cross-sectional shape of the filter segment 5 is not particularly limited, but can be, for example, a circle, an ellipse, a polygon, or the like.
• a destructible capsule containing a fragrance, fragrance beads, or a fragrance may be directly added to the filter segment 5.
• the center hole segment 4 and the filter segment 5 can be connected by an outer plug wrapper (outer wrapping paper) 11.
• the outer plug wrapper 11 can be, for example, a cylindrical piece of paper.
• the tobacco-containing segment 2, the cooling segment 3, and the connected center hole segment 4 and filter segment 5 can be connected by a mouthpiece lining paper 12. These connections can be made, for example, by applying a vinyl acetate glue or other adhesive to the inner surface of the mouthpiece lining paper 12, inserting the three segments, and rolling them up. These segments may also be connected in multiple passes using multiple lining papers.
• the non-combustion heating type flavor inhalation system according to the present embodiment includes a non-combustion heating type flavor inhaler according to the present embodiment and a heating device for heating the tobacco raw material of the non-combustion heating type flavor inhaler. Since the non-combustion heating type flavor inhalation system according to the present embodiment includes the non-combustion heating type flavor inhaler according to the present embodiment, the non-combustion heating type flavor inhalation system according to the present embodiment has less of the unique sweet aroma derived from furan analogues generated during use (when heated).
• the non-combustion heating type flavor inhalation system according to the present embodiment may have other configurations in addition to the non-combustion heating type flavor inhaler according to the present embodiment and the heating device.
• FIG. 2 An example of a non-combustion heating type flavor inhalation system according to this embodiment is shown in FIG. 2.
• the non-combustion heating type flavor inhalation system shown in FIG. 2 includes a non-combustion heating type flavor inhaler 1 according to this embodiment, and a heating device 13 that heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 from the outside.
• FIG. 2(a) shows the state before the non-combustion heating type flavor inhaler 1 is inserted into the heating device 13
• FIG. 2(b) shows the state after the non-combustion heating type flavor inhaler 1 is inserted into the heating device 13 and heated.
• the heating device 13 shown in FIG. 2 comprises a body 14, a heater 15, a metal tube 16, a battery unit 17, and a control unit 18.
• the body 14 has a cylindrical recess 19, and the heater 15 and the metal tube 16 are arranged on the inner side of the recess 19 at a position corresponding to the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 inserted into the recess 19.
• the heater 15 can be an electric resistance heater, and is heated by being supplied with power from the battery unit 17 in response to an instruction from the control unit 18 that controls the temperature.
• the heat generated by the heater 15 is transferred to the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 through the metal tube 16, which has high thermal conductivity.
• FIG. 2(b) since the illustration is schematic, there is a gap between the outer periphery of the non-combustion heating type flavor inhaler 1 and the inner periphery of the metal tube 16, but in reality, for the purpose of efficient heat transfer, it is preferable that there is no gap between the outer periphery of the non-combustion heating type flavor inhaler 1 and the inner periphery of the metal tube 16.
• the heating device 13 heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 from the outside, it may also heat from the inside.
• the heating temperature by the heating device is not particularly limited, but is preferably 400°C or less, more preferably 150°C to 400°C or less, and even more preferably 200°C to 350°C or less.
• the heating temperature refers to the temperature of the heater of the heating device.
• the present embodiment will be described in detail below with reference to examples, but the present embodiment is not limited to these examples.
• the amount of furan analogues in the smoke, as well as the amounts of trisaccharides, nicotine, and malic acid, were measured by the following methods.
• the amount of sugars (trisaccharides) consisting of glucose, fructose, and sucrose contained in 1 g of the processed tobacco raw material was measured by the following method.
• the amount of trisaccharides was measured by subjecting the extract obtained by extracting 1 g of the processed tobacco raw material with ultrapure water to high performance liquid chromatography.
• the amount of nicotine contained in 1 g of the processed tobacco raw material was measured by the following method. 1 mol/L sodium hydroxide was added to 1 g of the processed tobacco raw material, and the extract obtained by extracting with hexane was subjected to gas chromatography to measure the amount of nicotine.
• the amount of malic acid contained in 1 g of the processed tobacco raw material was measured by the following method.
• the amount of malic acid was measured by subjecting the extract obtained by extracting 1 g of the processed tobacco raw material with ultrapure water to a capillary electrophoresis system.
• Example 1 A blend of tobacco sheet and shredded tobacco, made from flue-cured tobacco, was prepared as a tobacco raw material. 6 g of a 10 wt % aqueous sodium carbonate solution (3 wt % as sodium carbonate) was sprayed onto 20 g W.B. of the tobacco raw material using a glass sprayer. The pH of the obtained tobacco raw material was 8.03. Next, the tobacco raw material was placed in a glass Erlenmeyer flask, covered with aluminum foil, and placed in an autoclave (product name: LSX-500, manufactured by Tommy Seiko Co., Ltd.). The autoclave was set to maintain a maximum temperature of 120°C for 30 minutes, and heating and pressurization were started.
• an autoclave product name: LSX-500, manufactured by Tommy Seiko Co., Ltd.
• the pressure inside the autoclave was 0.1 MPa.
• the tobacco raw material was removed and the pH was measured.
• the pH of the tobacco raw material was 6.13.
• the tobacco raw material was then transferred to a tray and air-dried in a draft for 30 minutes. It was then conditioned for 48 hours or more under conditions of room temperature of 22°C and humidity of 60%.
• the total mass of the eight furan analogues in the smoke generated when 0.2 g of the treated tobacco raw material was heated at 300° C. for 5 minutes was measured by the above method.
• the amount of trisaccharide contained in 1 g of the treated tobacco raw material was also measured by the above method. The results are shown in Table 1.
• Example 2 to 5 Except for changing the heating time to 1 to 4 hours, the tobacco raw material was processed and measured in the same manner as in Example 1. The results are shown in Table 1. The pressure inside the autoclave during heating was always 0.1 MPa. In addition, for Examples 3 to 5, the amounts of trisaccharide and malic acid were also measured by the above-mentioned method, and for Example 3, the amount of nicotine was also measured by the above-mentioned method.
• Comparative Examples 1 to 13 The tobacco raw material was processed and measured in the same manner as in Example 1, except that the amount of basic substance added, whether or not heating was performed, the heating method, heating temperature, and heating time were changed as shown in Table 1. The results are shown in Table 1. It should be noted that Comparative Example 1 shows an untreated tobacco raw material. In addition, in the "Heating” column in Table 1, “AC” indicates heating in an autoclave in a closed space (pressurized environment), and “Oven” indicates heating in an open oven. The same applies to Tables 2 and 3.
• Example 6 Except for using only flue-cured leaf tobacco as the tobacco raw material, the tobacco raw material was treated and measured in the same manner as in Example 3. The results are shown in Table 2.
• Comparative Examples 14 and 15 The tobacco raw material was processed and measured in the same manner as in Example 6, except that the amount of basic substance added and the presence or absence of heating were changed as shown in Table 2. The results are shown in Table 2. Comparative Example 14 shows an untreated tobacco raw material. In Comparative Example 15, 30% by weight of water was added instead of adding a basic substance.
• Example 7 Except for using only flue-cured tobacco shredded tobacco as the tobacco raw material, the tobacco raw material was processed and measured in the same manner as in Example 3. The results are shown in Table 3.
• Comparative Examples 16 and 17 The tobacco raw material was processed and measured in the same manner as in Example 7, except that the amount of basic substance added and the presence or absence of heating were changed as shown in Table 3. The results are shown in Table 3. Note that Comparative Example 16 shows an untreated tobacco raw material. In Comparative Example 17, 30% by weight of water was added instead of adding a basic substance.
• a method for processing tobacco raw materials comprising:
• a flue-cured tobacco raw material in which the total mass of furan, 2-methylfuran, furfural, 2-acetylfuran, 5-methylfuran, furfuryl alcohol, furyl hydroxymethyl ketone, and 5-hydroxymethylfurural in the smoke generated when 0.2 g of the flue-cured tobacco raw material is heated at 300°C for 5 minutes is 410 ⁇ g or less.
• a non-combustion heating type flavor inhaler according to [13], a heating device for heating the tobacco raw material of the non-combustion heating type flavor inhaler;
• a non-combustion heating type flavor inhalation system comprising:

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• 2023
  • 2023-07-14 JP JP2025533558A patent/JPWO2025017761A1/ja active Pending
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  • 2023-07-14 WO PCT/JP2023/025976 patent/WO2025017761A1/ja active Pending
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