WO2006038558A1 - Méthode de séchage des feuilles de tabac burley et feuilles de tabac burley séchées par ladite méthode - Google Patents

Méthode de séchage des feuilles de tabac burley et feuilles de tabac burley séchées par ladite méthode Download PDF

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Publication number
WO2006038558A1
WO2006038558A1 PCT/JP2005/018136 JP2005018136W WO2006038558A1 WO 2006038558 A1 WO2006038558 A1 WO 2006038558A1 JP 2005018136 W JP2005018136 W JP 2005018136W WO 2006038558 A1 WO2006038558 A1 WO 2006038558A1
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WIPO (PCT)
Prior art keywords
drying
tobacco
dried
dry
leaf
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Application number
PCT/JP2005/018136
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English (en)
Japanese (ja)
Inventor
Kazuharu Koga
Hitoshi Saito
Seiya Fujii
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Japan Tobacco Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Tobacco Inc. filed Critical Japan Tobacco Inc.
Publication of WO2006038558A1 publication Critical patent/WO2006038558A1/fr

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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
    • A24B1/00—Preparation of tobacco on the plantation
    • A24B1/02—Arrangements in barns for preparatory treatment of the tobacco, e.g. with devices for drying
    • 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

Definitions

  • the present invention relates to a method for drying leaf tobacco, and relates to a drying method that suppresses the production of nitrosamine peculiar to tobacco, which is said to be generated during leaf tapaco drying without impairing the original flavor of the type. More specifically, the present invention suppresses the production of nitrosamine peculiar to tobacco without drying the leaf tobacco's original flavor in the drying of a type of leaf tobacco, and the leaf tobacco in the process of drying after completion of yellowing and before the end of drying.
  • the present invention relates to a method for drying and a kind of burley leaf tobacco dried by the drying method.
  • the bone is dehydrated and dried for the purpose of drying and drying the middle bone.
  • Yellow flue-cured tobacco is dried using a dryer utilizing wind power, such as a Balta dryer. Drying time varies depending on the position and leaf condition. Between.
  • the dry period of the middle bone refers to the period from the completion of browning to the complete drying of the middle bone.
  • the drying of a kind of burre depends on natural conditions, and it is preferable to immediately control the temperature condition at around 30 ° C and the humidity condition at 70 to 80%.
  • the time required for drying varies depending on the state of the leaf and the leaves, but in the case of continuous drying, it is approximately 20 to 35 days.
  • the yellowing period is 3-5 days, the browning period is 4-6 days, and the dry bone period is 15-25 days.
  • N nitrosonornicotine
  • ⁇ 4-(—'- nitromethylamino) -4- (3-pyridyl) 1 1-butanone
  • NAT Nitrosoanatabine
  • TSNA Tobacco Specific Nitrosamine
  • TSNA is rarely contained in fresh leaves immediately after harvest, but after the start of drying, nitrate is reduced to nitrite by nitrite-reducing bacteria on the leaf surface, and this nitrite reacts with alkaloids contained in the leaf. If it is generated, it will be received and reduced.
  • JP 2001-503247 and JP 2002-503965 disclose that microwaves and acceleration are applied to leaf tobacco in the yellowing period during drying. Irradiating a particle beam is disclosed. This method is TSNA The leaf tobacco, which is less yellowing, is rapidly dehydrated and the drying is terminated, so that the above-mentioned curing cannot be performed sufficiently, and the original quality of the leaf tobacco such as flavor may be impaired. There is.
  • International publication WO00 / 15056 discloses that tobacco, which is in a yellowing period, is reduced in humidity, speed of temperature change, temperature, air flow, C0 level, in order to reduce TSNA in dried tobacco. It is disclosed to provide a controlled environment provided by controlling at least one of CO level, O level, etc.
  • International Publication WO00Z15056 discloses that leaf tobacco in the yellowing period is dried (dehydrated) at high temperature and high air volume.
  • Japanese Patent Application Laid-Open No. 2004-73152 discloses a method of drying burley leaf tobacco after the start of browning under environmental conditions controlled to a temperature of 25 to 35 ° C and a humidity of 65 to 85%. It is described that the browning period is completed and then natural drying is performed.
  • the present invention suppresses the production of nitrous acid and the production of TSNA, which is a harmful substance produced by the reaction of the produced nitrous acid and alkaloids, while maintaining the quality of tobacco. It is an object of the present invention to provide a method for drying burley leaf tobacco in consideration of the drying conditions of the above, and a burley leaf tobacco dried by the drying method.
  • the present invention is a method for drying a burley leaf tobacco, and after the yellowing is completed, the leaf tobacco is continuously used at a temperature condition of 45 ° C to 55 ° C using wind power. It provides a method for drying burley leaf tobacco, which includes drying and thereby inhibiting the production of TSNA produced during leaf tobacco drying.
  • the present invention also provides a burley leaf tobacco dried by a powerful drying method.
  • the air in the drying chamber can be exhausted continuously or intermittently. Thereby, drying can be promoted by discharging high-humidity air in the drying chamber.
  • the force S can be achieved by placing the damper provided in the drying chamber in an open state (continuous exhaust) or by automatically opening and closing the damper (intermittent exhaust).
  • drying using wind-fired power may be performed by heating equipment and air blowing equipment.
  • drying using a Balta dryer with yellow seed drying, a compact drying chamber with one barre, and the like can be mentioned.
  • it includes drying in a pipe house for drying burre and drying in a heated air blower used in a wooden drying room.
  • exhausting the inside of the drying chamber is effective for promoting drying. Since dehydration is not promoted in a high humidity state, it is a preferable mode to exhaust the dehydrated water from the leaf tanks to the outside by exhaust.
  • the time when the burley leaf tobacco is subjected to the drying conditions of the present invention is after the completion of yellowing and until the middle bone drying period.
  • the dry period of the intermediate bone is preferably until the intermediate period of dry bone because the dry period can be shortened by performing dry bone in the drying conditions of the present invention. By shortening the drying period, production and accumulation of TSNA is suppressed. If it is later in the middle bone dry, the number of days is short, so the effect is not expected much.
  • the number of days required for drying according to the drying conditions of the present invention varies depending on the state of the tobacco, the timing of drying, and the drying conditions such as the temperature 'wind speed.
  • the drying conditions such as the temperature 'wind speed.
  • the burley leaf tobacco of the present invention is subjected to the drying conditions of the present invention.
  • conventional drying conditions are used. It may be dried in a matter.
  • a pipe house, a wooden drying room and a compact drying room can be used.
  • Drying using wind power used in the present invention has heating equipment and air blowing equipment as described above, and is known per se.
  • a circulating Balta dryer used for drying yellow tobacco can be used, and a non-compartment drying chamber used for drying Burre.
  • a circulating Balta dryer is described on pages 164 to 165 of the “Leaf tobacco cultivation method”.
  • a drying chamber is provided in which a leaf tobacco is suspended in, for example, two upper and lower stages in a substantially hermetically sealed room.
  • the bottom surface of the drying chamber is composed of a perforated plate so that air can freely flow in and out of the drying chamber.
  • An upper air passage and a lower air passage for sending and discharging circulating air are provided at the upper and lower portions of the drying chamber.
  • a circulation duct communicating with the upper air flow path and the lower air flow path is provided at the side of the drying chamber.
  • An air blower is provided in the circulation duct, and the air sent also by the air blower is heated by a burner through a heat exchanger.
  • an intake / exhaust damper is provided above the circulation duct to take in external air and discharge the same amount of drying room air.
  • a dry bulb thermometer and a wet bulb thermometer are installed in the drying chamber. The thermometer, damper, and burner are connected to the control unit, and are controlled under conditions set according to the temperature and humidity in the drying chamber. The control of the burner drive and the humidity inside the drying chamber are controlled by exhausting the high humidity air inside by opening and closing the damper and taking in the low humidity air from outside.
  • the compact drying room has the same equipment as the Balta dryer, and the same control is performed.
  • drying under a constant humidity condition for example, control by opening / closing a damper (intermittent exhaust) by automatic control at a dry bulb temperature of 50 ° C and a wet bulb temperature of 40 ° C is compared to the conventional method.
  • TSNA generation can be suppressed by promoting drying, but drying can be promoted by performing drying while the damper is open and always exhausting part of the air in the drying chamber (continuous exhaust). TSNA generation can be suppressed.
  • Example 1 Drying of Burre and generation of TSNA under yellow seed drying conditions
  • Burare 1 leaf tobacco Kitakami 1 main leaf was used for the experiment.
  • the harvested leaves were dried with a Balta drier using the drying conditions of yellow seeds.
  • a Balta drier floor area 0.75 m 2
  • Kihara circulating Balta dryer
  • About 30 pieces of harvested leaves were knitted on steel nongers and hung in a dryer. Drying conditions were yellowing at a dry bulb temperature of 36-43 ° C (60 hours), lamina was dried at 45-55 ° C (33 hours), and then the bone was dried at 68 ° C (27 hours) )
  • the sampled leaf octopus was separated into lamina (meat) and middle bone.
  • the separated lamina was freeze-dried and then pulverized as an analytical sample.
  • a pipe house in which a vinyl and a mouse are stretched over a steel framework, which is a kind of burre, is dried.
  • the dry leaves dried in () were used as controls.
  • NNN, NNK :, NAT and NAB in the extraction night were quantified by gas chromatography according to the Spiegelhalder method (Spiegelhalder ⁇ ⁇ , Kubacki S. and Fischer S. (198 9) Beitr. Tabakforsch. Int ., 14 (3), 135-143, Fischer S. and Spiegelhalder B. (1989) Beitr. Tabakforsch. Int., 14 (3), 145-153).
  • the TSNA content in wind-dried dry leaf lamina is higher than the TSNA content in dry leaf dried with standard pino. Therefore, it was confirmed that TSNA could not be reduced at all even if the drying conditions of yellow flue-cured tobacco were applied to the drying of burley flora.
  • the TSNA content in the lamina after drying using wind-fired power was low at the completion of browning corresponding to the end of the yellow color fixation period, but increased rapidly at the end of drying. This is presumably due to drying at a high temperature during the dry period of the bone. It is presumed that the nitrosation reaction by accumulated nitrous acid and alkaloids in leaves was promoted by encountering high temperatures.
  • Example 2 Drying temperature and TSNA generation of leaf tobacco that has been yellowed and browned in a standard pipe house (conventional drying)
  • burley 21 (genuine leaf), a kind of burley leaf tobacco, was used for the experiment.
  • the harvested leaves were dried in a standard pipe house that was conventionally dried until yellowing was completed (5 days after harvesting) and browning was completed (10 days after harvesting).
  • 25 pieces of leaf tobacco in the middle of drying were knitted on steel hangers, suspended in the Balta dryer used in Example 1, and dried at the dry bulb temperature of 40, 50, 60 and 70 ° C until the drying was completed.
  • Table 2 shows the number of days required for drying. After drying, the sampled tobacco was separated into lamina and middle bone. The separated lamina was freeze-dried and then powdered to obtain a sample for analysis. TSNA was analyzed as in Example 1. The results are also shown in Table 2 below.
  • the TSNA content at the completion of yellowing and browning before hanging in the Balta dryer is 0.19 and 0.21 ig / g, respectively.
  • Sphere TSNA content in dry leaf lamina dried at 50 ° C is lower than that dried at 40, 60 and 70 ° C.
  • the reason for the increase in TSNA content at drying temperatures of 60 and 70 ° C is that nitrosation reaction was promoted by drying at high temperature, and TSNA content was increased.
  • Example 3 Wind speed and damper conditions and suppression of TSNA generation in wind-powered drying
  • Kitakami No. 1 (going leaves, true leaves) of burley leaf tobacco was used for the experiment.
  • the harvested leaves were dried with a pipe house and wind-fired dryer.
  • the Balta dryer shown in Example 1 was used as a wind-fired dryer.
  • Table 3 shows the dry test areas. For districts 3 and 6, drying is performed at a dry bulb temperature of 35 to 37 ° C and wet bulb temperature of 33 to 34 ° C until yellowing is completed, and drying by wind power is set to a dry bulb temperature of 50 ° C. did. In the 5th and 8th districts, drying was performed at a dry bulb temperature of 35 to 39 ° C and a wet bulb temperature of 32 to 34 ° C until the browning was completed, and drying by wind power was performed at a dry bulb temperature of 50 ° C. .
  • a high-humidity pipe house is a pipe house covered with silver aluminum sheet to make the room highly humid in a pipe house covered with vinyl (the same shall apply hereinafter).
  • TSNA extraction quantification was performed in the same manner as in Example 1.
  • nitrite nitrogen in dry leaves was analyzed by the method of Clutchfield and Burton (Crutchfield JD and Burton HR, Anal. Lett., (22) 555-571 (1989)).
  • 0.5 g of mesophyll samples from each section were applied to a 50 mL centrifuge tube, and 25 mL of the extract (KCllOg / Littonore, Snorefaninoremid 5 g / Lit Nore, Triton X—100 lmL / Lit Nore) was calorie-free at room temperature.
  • Nitrite nitrogen was extracted by shaking for 30 minutes. These extracts were filtered using filter paper (ADVA NTEC, No.
  • Table 4 shows the analysis results of TSNA and nitrite nitrogen (N0-N).
  • the TSNA content in the dry leaf lamina is dried at the pipe house, even when the wind speed is 20cmZs, the damper is automatic or the wind speed is 40cmZs, and the damper is open. Lower than dry leaf lamina. It can also be seen that dry leaves dried with a Balta dryer produced less nitrous acid than dry leaves dried in a pipe house.
  • Example 4 Drying temperature and TSNA suppression in wind-powered drying
  • Burare 1 leaf tobacco Kitakami 1 (main leaf) was used for the experiment.
  • leaf tobacco harvested in 2002 and 2003 was dried under the drying conditions shown in Table 5 and Table 6 below, respectively.
  • the Balta dryer shown in Example 1 was used as the wind-fired dryer. After drying, the sampled tobacco was separated into laminae and midbones. The separated lamina was freeze-dried and then pulverized as an analytical sample, and quantitative analysis of TSNA and nitrite nitrogen was performed in the same manner as in Examples 1 and 3. The results are shown in Table 7 and Table 8.
  • TSNA content in dry leaf lamina dried at 45, 50, and 55 ° C dry bulbs by wind-fired power is The amount of nitrous acid produced in the dry leaves dried with the Balta dryer is less than the dry leaves dried in the pipe house.
  • Example 5 Inhibition of TSNA and nitrite nitrogen production in the midbones of wind-fired drying
  • Burare 1 leaf tobacco Kitakami 1 main leaf was used for the experiment.
  • Example 1 The Balta dryer shown in Example 1 was used as the wind-fired dryer. After drying, the sampled tobacco was separated into lamina and midbone. The separated middle bone was freeze-dried and then pulverized as an analytical sample, and TSNA and nitrite nitrogen were quantitatively analyzed in the same manner as in Examples 1 and 3. The results are shown in Table 9.
  • the leaf tobacco dried by the drying method of the present invention had the same flavor and quality as the leaf tobacco dried by the conventional method.
  • the production of nitrous acid and the production of TSN A a harmful substance produced by the reaction of the produced nitrous acid and alkaloids, are suppressed.
  • the burley leaf tobacco dried by the drying method of the present invention has a low TSNA content.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

La présente invention a pour objet une méthode de séchage de feuilles de tabac Burley qui comprend une étape de séchage en continu de feuilles de tabac jaune entre 45 et 55 °C dans un fort courant d’air chaud pour inhiber la formation de nitrosamine. Ladite formation de nitrosamine est caractéristique du séchage de feuilles de tabac.
PCT/JP2005/018136 2004-10-01 2005-09-30 Méthode de séchage des feuilles de tabac burley et feuilles de tabac burley séchées par ladite méthode WO2006038558A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-289481 2004-10-01
JP2004289481 2004-10-01

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WO2006038558A1 true WO2006038558A1 (fr) 2006-04-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108851169A (zh) * 2018-07-27 2018-11-23 河南省农业科学院烟草研究所 豫烟9号祛青、防黑、保黄专用烘烤方法
CN113995156A (zh) * 2021-10-29 2022-02-01 常德长岭机械制造科技有限公司 一种传动式叶片生产用的晾晒装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005226A1 (fr) * 1996-08-05 1998-02-12 Williams Jonnie R Procede de traitement du tabac pour reduire la teneur en nitrosamines et produits ainsi fabriques
WO1998058555A1 (fr) * 1997-06-20 1998-12-30 Regent Court Technologies Procedes de traitement du tabac visant a reduire la teneur en nitrosamines, et produits resultants
WO2000015056A1 (fr) * 1998-09-15 2000-03-23 Star Scientific, Inc. Procede ameliore de traitement du tabac servant a limiter sa teneur en nitrosamines et produits obtenus au moyen de ce procede
JP2004073152A (ja) * 2002-08-22 2004-03-11 Japan Tobacco Inc 空気乾燥種葉たばこの乾燥方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005226A1 (fr) * 1996-08-05 1998-02-12 Williams Jonnie R Procede de traitement du tabac pour reduire la teneur en nitrosamines et produits ainsi fabriques
WO1998058555A1 (fr) * 1997-06-20 1998-12-30 Regent Court Technologies Procedes de traitement du tabac visant a reduire la teneur en nitrosamines, et produits resultants
WO2000015056A1 (fr) * 1998-09-15 2000-03-23 Star Scientific, Inc. Procede ameliore de traitement du tabac servant a limiter sa teneur en nitrosamines et produits obtenus au moyen de ce procede
JP2004073152A (ja) * 2002-08-22 2004-03-11 Japan Tobacco Inc 空気乾燥種葉たばこの乾燥方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108851169A (zh) * 2018-07-27 2018-11-23 河南省农业科学院烟草研究所 豫烟9号祛青、防黑、保黄专用烘烤方法
CN113995156A (zh) * 2021-10-29 2022-02-01 常德长岭机械制造科技有限公司 一种传动式叶片生产用的晾晒装置

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