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WO2021220790A1 - Procédé de fabrication de tabac en feuilles traité et procédé de stockage de tabac en feuilles - Google Patents

Procédé de fabrication de tabac en feuilles traité et procédé de stockage de tabac en feuilles Download PDF

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Publication number
WO2021220790A1
WO2021220790A1 PCT/JP2021/015217 JP2021015217W WO2021220790A1 WO 2021220790 A1 WO2021220790 A1 WO 2021220790A1 JP 2021015217 W JP2021015217 W JP 2021015217W WO 2021220790 A1 WO2021220790 A1 WO 2021220790A1
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WO
WIPO (PCT)
Prior art keywords
leaf tobacco
storage
tobacco
less
processed
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Ceased
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PCT/JP2021/015217
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English (en)
Japanese (ja)
Inventor
彰 桑名
大介 塩崎
創介 渡瀬
敦 永井
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Japan Tobacco Inc
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Japan Tobacco Inc
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Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Priority to JP2022517608A priority Critical patent/JP7461467B2/ja
Priority to EP21795872.7A priority patent/EP4144228A4/fr
Publication of WO2021220790A1 publication Critical patent/WO2021220790A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/04—Humidifying or drying tobacco bunches or cut 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
    • A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff

Definitions

  • the present invention relates to a method for producing processed leaf tobacco and a method for storing leaf tobacco.
  • leaf tobacco used in the production of tobacco products such as smokeless tobacco such as snus after harvesting, a process of enhancing the action of enzymes to enhance the flavor component and then a process of fixing the quality by drying are performed. It is common to perform the including processing. After this treatment, leaf tobacco is generally separated into lamina and middle bone at a raw material factory and stored in a case of about 200 kg. Including this storage period, separated tobacco raw materials such as lamina usually arrive at the manufacturing plant of tobacco products such as cigarettes about one month or more after harvesting, including the transportation period by ship, and in some cases, about 1 to 1 to Two years later.
  • a container for packaging leaf tobacco is colored with a colorant (Patent Document 1), or a colorant is added to a leaf tobacco-containing composition used in the process of producing smokeless tobacco.
  • the color of smokeless tobacco is changed by making it (Patent Document 2).
  • Patent Document 3 A technique for preventing discoloration of leaf tobacco by adjusting so as to be inside is known (Patent Document 3).
  • Patent Document 3 attention is paid to the relationship between the parameters of the leaf tobacco storage sheet and the discoloration of the stored leaf tobacco, but the storage conditions such as the specific parameters of the leaf tobacco itself during the storage period and the storage conditions are stored. Little research has been done on its relationship to the discoloration of leaf tobacco. If it is possible to suppress discoloration of leaf tobacco even after storage by managing specific storage conditions during the storage period, that is, if a desired green leaf tobacco can be obtained, for example, from the technique in Patent Document 3 above. There are no problems such as restrictions on the types of storage containers that can be recalled.
  • the present invention provides a processed leaf tobacco production method and a leaf tobacco storage method, which have a storage step to which a storage method capable of obtaining a leaf tobacco that maintains a desired green color even after the lapse of the storage period is applied. That is the issue.
  • the gist of the present invention is as follows.
  • a method for producing processed leaf tobacco which comprises a storage step of storing leaf tobacco using a storage container.
  • a method for producing processed leaf tobacco wherein in the storage step, the initial water content in the leaf tobacco is 8.5% by weight or less, and the water content in the leaf tobacco is maintained at 8.5% by weight or less.
  • [4] The method for producing processed leaf tobacco according to any one of [1] to [3], wherein the storage temperature in the storage step is normal temperature.
  • [5] The method for producing processed leaf tobacco according to any one of [1] to [4], wherein the storage container is sealed in the storage step.
  • [6] The method for producing processed leaf tobacco according to any one of [1] to [5], which comprises a processing step of processing the processed leaf tobacco that has undergone the storage step.
  • [7] The method for producing a processed leaf tobacco according to any one of [1] to [6], wherein the processed leaf tobacco is for smokeless tobacco.
  • leaf tobacco is a general term for harvested tobacco leaves that have not undergone aging (storage process). For example, even if the harvested tobacco leaves are deboned and separated and processed into lamina, middle bone, etc., those that have not undergone aging (storage process) are referred to as “leaf tobacco”.
  • processed leaf tobacco is a general term for the leaf tobacco after it has undergone aging (storage process). For example, even before the harvested tobacco leaves are processed into lamina, middle bone, etc., if they have undergone aging (storage process), they are referred to as "processed leaf tobacco". Since leaf tobacco that has undergone the storage process is referred to as processed leaf tobacco, when any process such as a bone removal step or a blending process is provided after the storage process, all the objects processed in each step are referred to as processed leaf tobacco.
  • L * is the CIELab color coordinate system represents the lightness of color
  • L * is as becomes white close large, which leads to black toward higher L * is small.
  • a * in the CIELab color system corresponds to the position between magenta and green, and the larger a * is, the closer to magenta, and the smaller a * is, the closer to green.
  • B * is in the CIELab color coordinate system corresponding to the position between yellow and blue, b * is about becomes yellow close large, a bluish higher b * is smaller.
  • the method for producing processed leaf tobacco (also simply referred to as “method for producing processed leaf tobacco”), which is an embodiment of the present invention, is a method for producing processed leaf tobacco, which comprises a storage step of storing leaf tobacco using a storage container.
  • a method for producing processed leaf tobacco wherein in the storage step, the initial water content in the leaf tobacco is 8.5% by weight or less, and the water content in the leaf tobacco is maintained at 8.5% by weight or less. ..
  • the reaction related to the discoloration of leaf tobacco is an irreversible reaction, and a reaction of changing from green to brown or the like can occur, but a reaction of changing from a color such as brown to green cannot occur. In other words, once the discolored leaf tobacco cannot be returned to green, it is very important to suppress the discoloration in the storage process in which the discoloration of the leaf tobacco is likely to occur.
  • the leaf tobacco varieties are not particularly limited, and various varieties can be used. For example, yellow varieties, Burley varieties, Orient varieties, native varieties, other Nicotiana-Tabacam varieties, and Nicotiana rustica varieties can be mentioned. These varieties can be used alone, but can also be blended in the process of different from leaf tobacco to processed leaf tobacco in order to obtain the desired flavor. Details of the leaf tobacco varieties are disclosed in "Tobacco Encyclopedia, Tobacco Academic Studies Center, 2009.3.31".
  • Yellow species is a general term for leaf tobacco varieties that are heat-dried by the iron tube drying method or the circulation drying method. Its leaf tobacco is yellow, has a high sugar content, has a unique aroma including sweetness, and is used as the main raw material for cigarettes called Virginia Blend, as well as other blend types of cigarettes, pipe tobacco, and chewing tobacco. It is blended in cigarettes and the like. Yellow varieties are characterized by a high sugar-to-nitrogen ratio as compared to other varieties. The content of reducing sugar in the yellow species is about 2.5% or more and about 30% or less based on the dry mass of the leaves.
  • the reducing sugar includes, for example, glucose or fructose.
  • Burley varieties are a general term for tobacco varieties that have characteristics such as a tendency for the leaf color to be lighter than other varieties. It is classified as a light-colored dried leaf along with the native species, and because it has a high ability to adsorb fragrances, it is used as one of the main raw materials for cigarettes called American Blend. The smoke is characterized by a chocolate-like scent, and good quality ones are accompanied by a refreshing stimulus called kick. Burley varieties are characterized by a lower sugar-to-nitrogen ratio than other varieties. The content of reducing sugars in Burley varieties is less than about 2.5% on a dry mass basis of leaves.
  • Orient species is a general term for tobacco varieties originally cultivated in the limestone region of the Mediterranean climate from Greece, Bulgaria to Turkey.
  • Leaf tobacco has a unique aroma and is used as the main raw material for oriental cigarettes such as Vietnamese rolls.
  • Orient seeds are in great demand as raw materials for cigarettes because they have a mild taste and good flammability.
  • the Orient variety is characterized by having more foliar resin than other varieties.
  • leaf tobacco varieties can be done in a process that is different from leaf tobacco to processed leaf tobacco.
  • blend means a mixture of leaf tobacco belonging to the same variety or different varieties, but in the present specification, the combination of different processed leaf tobacco may be referred to as "blend".
  • leaf tobacco is graded according to characteristics such as origin, arrangement within the plant, color, surface condition, size, and shape. Further, it is considered that leaf tobacco contains more than 300 chemical components, and the chemical properties of tobacco of different varieties are different. In addition, even leaf tobacco of the same variety may have different chemical properties depending on the grade. Therefore, the above blending is performed in order to obtain leaf tobacco having desired characteristics and desired chemical properties.
  • the average particle size of leaf tobacco in the storage step is not particularly limited, but is usually 0.5 mm or more, preferably 1 mm or more, more preferably 3 mm or more, further preferably 5 mm or more, and further. , Usually 5 cm or less, preferably 3 cm or less, more preferably 2 cm or less, and even more preferably 1 m or less.
  • the average particle size is measured by actual measurement or laser diffraction / scattering method, and represents a volume average diameter.
  • the method for producing processed leaf tobacco according to the present embodiment includes a storage step of storing leaf tobacco using a storage container.
  • the method of storing leaf tobacco is not particularly limited as long as it is a method of storing leaf tobacco using a storage container.
  • the time when the leaf tobacco is put into the storage container is defined as the start time of the storage process
  • the time when the leaf tobacco is taken out from the storage container is defined as the end time of the storage process.
  • the start time of the storage process is the time when the water content of the leaf tobacco is measured immediately before the leaf tobacco is placed in the storage container.
  • the storage period the period from the time when the leaf tobacco is put into the storage container to the time when the leaf tobacco is taken out from the storage container is defined as the storage period, and this period may be referred to as "in storage”.
  • the water content of the leaf tobacco immediately before the leaf tobacco is placed in the storage container is referred to as the initial water content.
  • the storage period a part of the leaf tobacco stored in the middle may be taken out from the storage container.
  • the storage process of the leaf tobacco taken out from the storage container is completed, but the storage process of the leaf tobacco remaining in the storage container is performed. Does not end.
  • leaf tobacco may be added to the storage container during the storage period. In this case, for the leaf tobacco added during the storage period, the time when the leaf tobacco is placed in the storage container is the start time of the storage process.
  • the type of storage container is not particularly limited as long as it can contain leaf tobacco, but it is preferable that the storage container does not allow water molecules to pass through. Further, the storage container may be a container having high rigidity and not easily deformed, or a container having low rigidity and easily deformed.
  • the material of the storage container can be appropriately selected according to the storage environment, and examples thereof include metal materials, inorganic materials, and organic materials. From the viewpoint of flexibility and light weight, organic materials are preferable, and polymer materials are more preferable. , Particularly preferably polyethylene. One of these materials may be used alone, or two or more of these materials may be used in combination.
  • the shape of the storage container can be appropriately selected according to the storage environment, and examples thereof include a bag shape, a rectangular parallelepiped shape, and the like, and the opening is circular, oval, or rectangular.
  • the size of the storage container can be appropriately selected according to the storage environment, and may be, for example, 0.1 m 3 or more and 2 m 3 or less, or 0.2 m 3 or more and 1 m 3 or less, but 0. .3M 3 or more, preferably 0.7 m 3 or less.
  • the storage container may or may not be sealed, but it is preferable that the storage container is sealed from the viewpoint of suppressing changes in the water content of leaf tobacco and reducing the risk of foreign matter being mixed.
  • Sealing in the present specification means a state in which the storage container is shielded from the outside air to the extent that moisture does not move inside and outside the storage container.
  • the storage container is a plastic bag, the airtightness is used.
  • the one in which the opening is tied with a string is also applicable.
  • the present inventors obtain a leaf tobacco having a desired green color by setting the initial water content in the leaf tobacco within a specific range and setting the water content of the leaf tobacco during storage within a specific range. I found that I could do it.
  • This specific range is as follows.
  • the initial water content in leaf tobacco is not particularly limited as long as it is 8.5% by weight or less from the viewpoint of suppressing discoloration of leaf tobacco, but it is preferably 7% by weight or less, and more preferably 5% by weight or less. It is more preferably 3% by weight or less, and particularly preferably 2% by weight or less.
  • the initial stage means the time when the storage period starts, that is, the time when the leaf tobacco is put into the storage container.
  • the water content in the leaf tobacco during the period other than the initial storage period is not particularly limited as long as it is maintained at 8.5% by weight or less from the viewpoint of suppressing discoloration of the leaf tobacco, but is maintained at 7% by weight or less. It is more preferable that it is held at 5% by weight or less, more preferably it is held at 3% by weight or less, and it is particularly preferable that it is held at 2% by weight or less.
  • the water content of leaf tobacco during storage can be measured by removing the leaf tobacco from the storage container and measuring the removed leaf tobacco by the method described later, but the water content is measured between the removal from the storage container and the measurement of the water content. It is necessary to measure the water content immediately after taking it out of the storage container, and the environment inside the storage container and the environment for measuring the water content are about the same. Is preferable.
  • the water content in leaf tobacco is measured by the following method. First, 1.0 g of the target leaf tobacco sample is weighed and dried in a fixed moisture measuring device (for example, a halogen moisture meter manufactured by Ohaus) set at 100 ° C. for 3 minutes. After drying, the displayed value calculated by the moisture measuring device is used as the moisture content.
  • a fixed moisture measuring device for example, a halogen moisture meter manufactured by Ohaus
  • the initial a * value of leaf tobacco in the CIELab color system in the storage process is -2.0 or less from the viewpoint of obtaining leaf tobacco having a desired green color that can give a favorable impression to the user of the final product. It is preferably -3.0 or less, more preferably -4.0 or less, particularly preferably -5.0 or less, and usually -30.0 or more. , -20.0 or more, more preferably -15.0 or more, and even more preferably -10.0 or more. Further, it is preferable that the range in which the a * value is retained in the storage step is also within the above range. The above a * value changes depending on the water content, but does not change immediately after the change in the water content, but gradually changes.
  • the initial L * value in the CIELab color system of leaf tobacco in the storage process and the L * value during storage are not particularly limited, and may be, for example, 20 or more and 60 or less.
  • the initial b * value in the CIELab color system of leaf tobacco in the storage step and the b * value during storage are not particularly limited, and may be, for example, 10 or more and 45 or less.
  • the above leaf tobacco a * value, L * value, and b * value are spectrophotometers (for example, KONICA MINOLTA / CM3500d) for the surface of the leaf tobacco immediately before the storage process or the leaf tobacco immediately after being taken out from the storage container. , Konica Minolta Holdings, Inc.).
  • the color measurement operation is performed by shining standard light (standard illuminant D65 for color measurement, CIE, ISO reference light) and measuring the reflected light (reflected color measurement / normal reflected light removal method (SCE)) to quantify it. ..
  • the weight ratio of leaf tobacco to the volume of the storage container is not particularly limited, but is usually 40 kg / m 3 or more from the viewpoint of making it difficult to increase the water content in leaf tobacco or from the viewpoint of easily keeping it constant. It is preferably 80 kg / m 3 or more, and usually 240 kg / m 3 or less, preferably 180 kg / m 3 or less.
  • the storage temperature is not particularly limited, but is preferably normal temperature or low temperature from the viewpoint of suppressing discoloration of leaf tobacco, and is preferably normal temperature from the viewpoint of suppressing manufacturing cost.
  • the normal temperature specifically means 10 ° C. or higher and lower than 40 ° C., a temperature range above this upper limit is a high temperature, and a temperature range below this lower limit is a low temperature.
  • the storage temperature is preferably 15 ° C. or higher and 35 ° C.
  • the relative storage humidity is not particularly limited, but is preferably normal humidity or low humidity from the viewpoint of suppressing discoloration of leaf tobacco, and is preferably normal humidity from the viewpoint of manufacturing cost.
  • the normal humidity specifically means 30% RH or more and 70% RH or less, and a humidity range above this upper limit is defined as high humidity and a humidity range below this lower limit is defined as low humidity.
  • the storage pressure is not particularly limited, but is preferably normal pressure or low pressure from the viewpoint of suppressing discoloration of leaf tobacco, and is preferably normal pressure from the viewpoint of suppressing manufacturing cost.
  • the normal pressure specifically means 86 kPa or more and 106 kPa or less, and the pressure range above this upper limit is defined as high pressure, and the pressure range below this lower limit is defined as low pressure.
  • the atmosphere in the storage container in the storage step is not particularly limited and may be air, or may be another atmosphere (for example, an inert gas such as nitrogen or argon) as long as the effects of the present invention can be obtained.
  • the brightness around the storage container in the storage process is preferably as dark as possible because the reaction of leaf tobacco due to light may occur.
  • the storage period is not particularly limited, but may be, for example, 10 days or more, 30 days or more, 60 days or more, 90 days or more, 120 days or more, 150 days or more, and 540 days or less, 510 days or less, 480 days or more. It may be days or less, 450 days or less, 420 days or less, 390 days or less, 360 days or less, 330 days or less, 300 days or less, 270 days or less, 240 days or less, 210 days or less.
  • the leaf tobacco storage method according to another embodiment of the present invention is the above-mentioned storage method, that is, a leaf tobacco storage method in which leaf tobacco is stored using a storage container.
  • the initial water content in leaf tobacco is 8.5% by weight or less, and the water content in leaf tobacco is maintained at 8.5% by weight or less.
  • the conditions of the storage method according to the present embodiment are the same as the conditions described in the above-mentioned storage method.
  • processed leaf tobacco can be produced through the steps (1) to (6) shown below.
  • (6) A processing process for further processing processed leaf tobacco that has undergone a storage process.
  • the storage step of (5) above is the storage step described above.
  • the above steps (1) to (4) may be carried out after the step (5) as appropriate, and the step (6) may also be carried out as appropriate before the step (5).
  • the processing step (6) above is a step of adding some treatment to the processed leaf tobacco obtained through the storage step. Specifically, for example, a blending step of blending a plurality of types of processed leaf tobacco, and processed. Examples thereof include a deboning step of deboning leaf tobacco, a sorting step of selecting processed leaf tobacco of a specific size using a sieve, and a processed leaf tobacco drying step of drying processed leaf tobacco.
  • each step of producing processed leaf tobacco it is preferable that the water content of leaf tobacco or processed leaf tobacco is low not only in the storage step but also in steps other than the storage step.
  • the processed leaf tobacco manufacturing process consists of a plurality of steps as in the above example, each step may be carried out in the same area, or one step may be carried out in two or more areas. good.
  • the above example will be specifically described.
  • the method for producing processed leaf tobacco according to the present embodiment may include a cultivation / harvesting step of cultivating and harvesting leaf tobacco.
  • the method for cultivating and harvesting leaf tobacco is not particularly limited and can be cultivated and harvested by a known method, but it is preferable to harvest when the green color of leaf tobacco is stronger. By accelerating the harvest, it is possible to harvest more green leaf tobacco.
  • the method for producing processed leaf tobacco according to the present embodiment may include a drying step of drying the harvested leaf tobacco.
  • the method for drying the leaf tobacco is not particularly limited, and the leaf tobacco can be dried by a known method such as natural drying, microwave drying, and controlled drying.
  • the drying step may activate the actions of various enzymes contained in leaf tobacco. Usually, it is 68 ° C. or higher and 99 ° C. or lower, preferably 72 ° C. or higher and 90 ° C. or lower, and more preferably 75 ° C. or higher and 85 ° C. or lower.
  • the drying time is usually 1 hour or more and 120 hours or less, preferably 1 hour or more and 72 hours or less, and more preferably 1 hour or more and 24 hours or less. Further, it is preferable to carry out the drying so that the water content of the leaf tobacco after the drying step is 7% by weight or less, and further it is preferable to carry out the drying so that the water content of the leaf tobacco is 5% by weight or less.
  • the method for producing processed leaf tobacco according to the present embodiment may include a leaf tobacco sorting step of selecting the harvested leaf tobacco to be used.
  • the method for selecting leaf tobacco to be used is not particularly limited, and a known method can be applied. Since leaf tobacco that has just been harvested includes various sizes, the particle size can be made uniform by the leaf tobacco sorting step.
  • the method for producing processed leaf tobacco according to the present embodiment may include a coarse pulverization step of coarsely pulverizing leaf tobacco.
  • the leaf tobacco that has undergone the above leaf tobacco drying step is roughly pulverized.
  • the method for coarsely pulverizing leaf tobacco is not particularly limited, and coarse pulverization can be performed by a known method.
  • the average particle size of the coarsely crushed leaf tobacco is not particularly limited and usually ranges from several hundred ⁇ m to several mm.
  • the processed leaf tobacco manufacturing method may include a processing step of processing the processed leaf tobacco that has undergone the above-mentioned storage step.
  • the mode of the processing step is not particularly limited, and examples thereof include the following steps, and these steps can be used in combination.
  • the following steps shown as an example of the processing step can be provided before the storage step.
  • the pre-blended leaf tobacco may be used in the storage step, or the pre-bone-removed leaf tobacco may be used in the storage step. You may provide it.
  • the method for producing processed leaf tobacco according to the present embodiment may include a blending step of blending a plurality of processed leaf tobacco obtained in another step.
  • the blending in this step is not limited to blending leaf tobacco of two or more varieties (for example, yellow and Burley), but processed leaf tobacco of one variety (for example, yellow only) is produced in another step. If so, it also includes a mode of blending these.
  • the blending step is preferably provided immediately after the above storage step.
  • the plurality of processed leaf tobacco to be blended may include processed leaf tobacco that has not undergone the above-mentioned storage step in part, but it is preferable that all the processed leaf tobacco has undergone the above-mentioned storage step.
  • the method for producing processed leaf tobacco according to the present embodiment may include a deboning step of separating the processed leaf tobacco into a middle bone and a lamina.
  • the method of removing the bone is not particularly limited, and a known method can be applied, and examples thereof include a method of separating the middle bone and the lamina via a middle bone feeder, a middle bone harmonizing device, and a middle bone silo. ..
  • This deboning step is preferably provided after the above blending step.
  • the lamina is processed leaf tobacco.
  • the transport speed of the middle bone silo is usually 20 mm / min or more and 1500 mm / min or less.
  • the thickness of the processed leaf tobacco layer loaded into the mid-bone silo is usually 1 cm or more and 3 cm or less.
  • the method for producing processed leaf tobacco according to the present embodiment may include a processed leaf tobacco sorting step for selecting a processed leaf tobacco that has undergone a storage step to be used.
  • the method for selecting the processed leaf tobacco to be used is not particularly limited, and a known method can be applied. Since processed leaf tobacco that has undergone the above blending step and / or deboning step includes those of various sizes, the sorting step is a blending step and / or deboning step from the viewpoint of making the particle size uniform. It is preferable to provide it after.
  • the method for producing processed leaf tobacco according to the present embodiment may include a processed leaf tobacco drying step of drying the processed leaf tobacco.
  • the method for drying the processed leaf tobacco is not particularly limited, and the same method as the above-mentioned leaf tobacco drying step can be applied.
  • the drying is performed by hot air or the like using a multi-chamber dryer or a rotary dryer.
  • the drying temperature is not particularly limited, but is usually 15 ° C. or higher and 60 ° C. or lower, 17 ° C. or higher and 50 ° C. in order to reduce the water content in the leaf tobacco before the storage process and to make the green color of the leaf tobacco stronger.
  • the temperature is preferably 20 ° C. or higher and 40 ° C. or lower.
  • the drying time is usually 2.5 hours or more and 5 hours or less, preferably 0.5 hours or more and 1 hour or less, and 5 minutes or more and 15 minutes or less. More preferred. Further, it is preferable to carry out the drying so that the water content of the leaf tobacco after the drying step is 7% by weight or less, and further it is preferable to carry out the drying so that the water content of the leaf tobacco is 5% by weight or less.
  • the transport speed of the processed leaf tobacco may be, for example, 3 m / min or more and 25 m / min or less, and 4 m / min or more and 20 m / min or less. It may be less than or equal to 5 m / min or more and 15 m / min or less.
  • the method for producing processed leaf tobacco may include a water content measuring step for measuring the water content in leaf tobacco and processed leaf tobacco.
  • the timing of measuring the water content is not limited, and it is arbitrarily performed before or after each of the above steps or in each step. If the water content in the leaf tobacco or processed leaf tobacco is controlled in the storage process, but the water content in the leaf tobacco or processed leaf tobacco increases in the process before or after the storage process, these Since the leaf tobacco may be discolored in the process, it is preferable to confirm that the water content increases by measuring the water content other than the storage process.
  • the processed leaf tobacco that has undergone each of the above processes is finally packed and shipped, or incorporated into the final product as it is.
  • the above-mentioned processed leaf tobacco is not particularly limited in use, and can be used for smokeless tobacco, cigarettes, electrically heated smoking articles, and the like through appropriate treatment steps.
  • the usage mode of the processed leaf tobacco is not particularly limited, and for example, snus, gum, chewing tobacco, key tobacco, compressed tobacco (tablet, stick, etc.), edible film, etc. Can be.
  • smokeless tobacco is produced as snus
  • a known method can be used for the production. In this case, it can be obtained by filling the tobacco material produced by the above-mentioned production method into a packaging material using a raw material such as a non-woven fabric by a known method. For example, the amount of tobacco material is adjusted and filled, and then sealed by means such as heat sealing to obtain snus.
  • the packaging material can be used without particular limitation, but a cellulose-based non-woven fabric or the like is preferably used.
  • a smokeless tobacco product for example, in the case of gum, it is obtained by mixing the above-mentioned tobacco material obtained by using the production method of the present invention with a known gum base by using a known method. Chewing tobacco, snuff tobacco, and compressed tobacco can also be obtained by using known methods other than using the above-mentioned tobacco material obtained by using the production method of the present invention.
  • the proportion of processed leaf tobacco according to the above-described embodiment contained in the smokeless tobacco material may be 1 to 100% by weight.
  • the L * and b * measured at each of these steps were in the ranges of 44.1 to 46.5 and 15.7 to 22.0, respectively.
  • the sealed storage container was temporarily opened after each storage period. Immediately after collecting 100 g of leaf tobacco, the storage container was sealed, and the measurement was performed using the collected leaf tobacco.
  • Table 1 the water content during storage for 60 days, 90 days, and 120 days fluctuates slightly, but the time from opening the storage container to measuring the water content varies. I presume that there is one of the causes of this fluctuation. Further, in Experimental Example 1, leaf tobacco having an initial water content of 6.19% by weight in leaf tobacco was used.
  • the initial water content of leaf tobacco is different between Experiment 1 and Experiment 2 described later, the initial a * value shows the same value. This is to control the water content of the leaf tobacco just before storage step, and, a * value from not intended to change immediately after a change in moisture content, a change occurs in the a * value at the early time points Because it wasn't.
  • the water content and a * value of leaf tobacco after each storage period excluding the initial stage were measured for a plurality of leaf tobacco taken out from the storage container after each storage period.
  • the numerical values shown in Table 1 below are values calculated as the average value of the measured values of a plurality of leaf tobacco taken out from the storage container after each period.
  • Example 2 The experiment was carried out in the same manner as in Experimental Example 1 except that leaf tobacco having an initial water content of 9.57% by weight was used as the leaf tobacco to be used. The results of this experiment are shown in Table 1 below. The L * and b * measured at each of these steps were in the ranges of 39.7 to 46.5 and 16.3 to 22.0, respectively.
  • a method for producing processed leaf tobacco and a method for producing leaf tobacco which has a storage step to which a storage method capable of obtaining a leaf tobacco that maintains a desired green color even after the lapse of the storage period is applied.
  • a storage method can be provided.

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Abstract

La présente invention aborde le problème de la fourniture : d'un procédé de fabrication de tabac en feuilles traité, le procédé permettant d'obtenir du tabac en feuilles dans lequel une couleur verte souhaitée est préservée même à l'issue d'une période de stockage, et comportant une étape de stockage au cours de laquelle un procédé de stockage est appliqué ; ainsi que d'un procédé de stockage de tabac en feuilles. L'invention concerne un procédé de fabrication de tabac en feuilles traité, le procédé comprenant une étape de stockage consistant à stocker du tabac en feuilles en utilisant un récipient de stockage. Lors de l'étape de stockage, la teneur en humidité initiale du tabac en feuilles est inférieure ou égale à 8,5 % en poids, et la teneur en humidité du tabac en feuilles est maintenue à 8,5 % en poids ou moins.
PCT/JP2021/015217 2020-04-28 2021-04-12 Procédé de fabrication de tabac en feuilles traité et procédé de stockage de tabac en feuilles Ceased WO2021220790A1 (fr)

Priority Applications (2)

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JP2022517608A JP7461467B2 (ja) 2020-04-28 2021-04-12 加工済葉たばこの製造方法、及び葉たばこの保管方法
EP21795872.7A EP4144228A4 (fr) 2020-04-28 2021-04-12 Procédé de fabrication de tabac en feuilles traité et procédé de stockage de tabac en feuilles

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JP2020-079600 2020-04-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06113807A (ja) 1992-10-09 1994-04-26 Japan Tobacco Inc 乾燥葉たばこ保存用シート
WO2014156431A1 (fr) * 2013-03-27 2014-10-02 日本たばこ産業株式会社 Produit de tabac oral
WO2015098743A1 (fr) * 2013-12-26 2015-07-02 日本たばこ産業株式会社 Procédé de production de matériau de tabac, et matériau de tabac produit par ledit procédé de production
WO2018139068A1 (fr) * 2017-01-30 2018-08-02 日本たばこ産業株式会社 Procédé de fabrication de matière première de tabac, et matière première de tabac

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019193894A1 (fr) * 2018-04-04 2019-10-10 日本たばこ産業株式会社 Produit de tabac oral, procédé de fabrication de matériau d'emballage pour produit de tabac oral, et procédé de fabrication de produit de tabac oral

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06113807A (ja) 1992-10-09 1994-04-26 Japan Tobacco Inc 乾燥葉たばこ保存用シート
WO2014156431A1 (fr) * 2013-03-27 2014-10-02 日本たばこ産業株式会社 Produit de tabac oral
WO2015098743A1 (fr) * 2013-12-26 2015-07-02 日本たばこ産業株式会社 Procédé de production de matériau de tabac, et matériau de tabac produit par ledit procédé de production
WO2018139068A1 (fr) * 2017-01-30 2018-08-02 日本たばこ産業株式会社 Procédé de fabrication de matière première de tabac, et matière première de tabac

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Encyclopedia of Tobacco", vol. 3, 2009, TOBACCO ACADEMIC STUDIES CENTER, pages: 31
See also references of EP4144228A4

Also Published As

Publication number Publication date
EP4144228A1 (fr) 2023-03-08
JP7461467B2 (ja) 2024-04-03
EP4144228A4 (fr) 2024-10-16
JPWO2021220790A1 (fr) 2021-11-04

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