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WO2003056945A1 - Cigarette et filtre pour cigarette - Google Patents

Cigarette et filtre pour cigarette Download PDF

Info

Publication number
WO2003056945A1
WO2003056945A1 PCT/JP2003/000040 JP0300040W WO03056945A1 WO 2003056945 A1 WO2003056945 A1 WO 2003056945A1 JP 0300040 W JP0300040 W JP 0300040W WO 03056945 A1 WO03056945 A1 WO 03056945A1
Authority
WO
WIPO (PCT)
Prior art keywords
basic amino
amino acid
salt
tobacco
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2003/000040
Other languages
English (en)
Japanese (ja)
Inventor
Masafumi Tarora
Kazuhiko Katayama
Takashi Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
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
Priority to JP2003557317A priority Critical patent/JP3905886B2/ja
Priority to CA2472386A priority patent/CA2472386C/fr
Priority to AU2003202480A priority patent/AU2003202480A1/en
Priority to KR1020047010407A priority patent/KR100596552B1/ko
Priority to EP03701019A priority patent/EP1470760A4/fr
Priority to CNB038019736A priority patent/CN1313038C/zh
Priority to UA20040806604A priority patent/UA76021C2/uk
Publication of WO2003056945A1 publication Critical patent/WO2003056945A1/fr
Priority to US10/885,027 priority patent/US20050000526A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/32—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by acyclic compounds
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances

Definitions

  • the present invention relates to a tobacco having a small amount of aldehydes in mainstream smoke, and a tobacco filter capable of reducing the amount of aldehydes in mainstream tobacco smoke.
  • An object of the present invention is to provide a filter for tobacco tobacco which has a small influence such as deteriorating the taste of tobacco and can effectively reduce aldehydes in mainstream tobacco smoke. It is in.
  • a tobacco according to one embodiment of the present invention is characterized by containing a basic amino acid or a basic amino acid salt.
  • a tobacco filter according to one embodiment of the present invention is characterized by containing a basic amino acid or a basic amino acid salt. In the present invention, it is preferable that 1 mg or more of the basic amino acid or the basic amino acid salt is contained. In the present invention, it is preferable that the basic amino acid or the basic amino acid salt is added as an aqueous solution.
  • the tobacco or tobacco filter of the present invention may further contain a surfactant.
  • FIG. 1 is a diagram showing an apparatus for measuring formaldehyde in mainstream tobacco smoke used in an embodiment of the present invention.
  • FIG. 2 is a sectional view of a cigarette according to the embodiment of the present invention.
  • FIG. 3 is a sectional view of a tobacco filter according to another embodiment of the present invention.
  • the present inventors have studied additives from various viewpoints for reducing aldehydes in mainstream tobacco smoke, and as a result, basic amino acid or basic amino acid salt is effective. I found this.
  • the basic amino acid or basic amino acid salt includes, for example, arginine, arginine salt, lysine, lysine salt, histidine, histidine salt, o / retin, ordinium.
  • a substance selected from the group consisting of tin salt, citrulline, citrulline salt, hydroxyzide and hydroxyzide salt is used. Of these, for example, arginine and its salts are recognized as food additives.
  • the site to which the basic amino acid or the basic amino acid salt is added may be any of tobacco chopping, wrapping paper, and a filter, and is not particularly limited.
  • the cigarette filter of the present invention may be a filter attached to the suction side of the tobacco portion of the cigarette, or a filter / letter in the form of a cigarette hood / leader.
  • the content of the basic amino acid or the basic amino acid salt is set to 1 mg or more by 1 mg or less. This is because it is difficult to obtain sufficient effects.
  • the use of a basic amino acid or a basic amino acid salt in the presence of water increases the effect of reducing aldehydes.
  • the method for measuring aldehydes in mainstream tobacco smoke employed in the following examples is based on the use of 2,4-dinitrophenylhydrazine (DNPH) as a trapping substance, and the production of high-speed derivatives. It is measured by liquid chromatography (HPLC).
  • the target substances that can be measured simultaneously by this method are formaldehyde, acetoaldehyde, acetone, acrolein, propionaldehyde, crotonaldehyde, and methylethylethylketone. It is composed of eight components: ton and n-butyl aldehyde.
  • formaldehyde among the aldehydes (carbonyl compounds) to be measured.
  • the DNPH collection liquid 12 is placed in the collection air-washing bottle 11.
  • the volume of the air-washing bottle 11 was 25 OmL
  • the amount of the DNPH collection liquid 12 was 10 OmL
  • the dead volume was 150 mL.
  • the lower end of the glass tube 14 to which the cigarette 1 is attached is immersed in the collected liquid 12 in the washing bottle 11. Attach the glass tube 15 and the Cambridge pad 16 so that it communicates with the dead volume of the air-wash bottle 11, and attach the Cambridge pad 16 and the automatic smoker 17. Connect and.
  • the derivative formed as described above is measured by HPLC.
  • the collected liquid is filtered, and then diluted with Trizma Base liquid (4 mL of collected liquid: 6 mL of Trizraa Base liquid). Measure this solution with HPLC.
  • the HPLC measurement conditions are as follows. Column: HP LiChrospher 100RP-18 (5 ⁇ ) 250 X 4mm
  • Mobile phase Gradient of three phases (Solution A: Ultrapure water solution containing 30% of acetonitrile, 10% of tetrahydrofuran and 1% of IPA, Liquid B: Ultrapure water solution containing 65% of acetonitrile, 1% of tetrahydrofuran and 1% of IPA, solution C: 100% of acetonitrile).
  • this cigarette has a cigarette section 20 in which a tobacco cut 21 is wound with a wrapping paper 22 and a filter 31 with a cigarette wound in a molding paper 32.
  • the filter part 30 and the filter part 40 are attached by chip paper 40.
  • a filter material for example, cellulose acetate fiber Can be used.
  • a plurality of divided filters may be used, and the individual filters may be wound around the body by molding paper in a state where each of the filters is wound by individual winding paper.
  • the volume of formaldehyde was 110 ⁇ g as a result of measuring a single roll of a commercially available tanole 6 mg cigarette with the finale part cut off using the above measurement method with 7 puffs. .
  • a base filter A As a base filter A, an acetate filter without a plasticizer was prepared. In addition, 35 mg of a 1% by weight arginine aqueous solution was added to the base filter A using a particle generator (Atomizer 1), and the mixture was harmoniously dried for 48 hours to obtain a test filter (arginine 3%). .5 mg) was prepared. Similarly, arginine.glutamate 10 wt% was added to base filter A. Add 35 mg of the aqueous solution using a particle generator (atomizer), and harmoniously dry for 48 hours to add another test filter (arginine and glutamate 3 , 5 mg). ) was prepared.
  • a particle generator Atomizer
  • Each filter was connected to the above-mentioned single winding part, and the amount of formaldehyde (FA) in the mainstream smoke was measured according to the above-mentioned measuring method.
  • the results are shown in Table 1. From Table 1, it can be seen that cigarettes using arginine or arginine glutamate-filled / letter added to base filter A have sufficient formaldehyde for cigarettes I using base filter A. It can be seen that the metal has a reduced effect.
  • Base filter B was prepared by adding 6 wt% of triacetin as a plasticizer to base fin- olator A and plasticizing. This base filter B is equivalent to that used in the product. In addition, 35 mg of a 10 wt% aqueous solution of arginine was added to base filter B, followed by harmony drying for 48 hours to obtain a test filter (3.5 mg of arginine was added). ) was prepared. same Similarly, by adding 35 mg of an aqueous solution containing 10% by weight of arginine'-glutamate to base filter B, and performing harmony drying for 48 hours, a filter for another test (arginine-glutamic acid) was obtained. Acid salt (3.5 mg added).
  • base filter A or base filter letter B was added to a 1 wt% aqueous solution of arginine / reginine or 10 wt% of arginine'glutamate.
  • a 35% aqueous solution was added, and immediately after the addition, the amount of formaldehyde (FA) in the mainstream smoke was measured in the same manner as above.
  • the amount of arginine or arginine-glutamate was 3.5 mg.
  • Table 4 and Table 1 Comparison with Table 2 and Table 2 shows that the coexistence of arginine or arginine-glutamate with water increases the effect of reducing formaldehyde.
  • a 20 wt% aqueous solution of arginine was added to the tobacco cut in a mixing drum at a spraying rate of 20 wt% using a hand atomizer, and then dried at 80 ° C for 5 minutes in a dryer. . After that, the mixture was harmonized for 48 hours, and a single turn of 59 mm was prepared with 69.0 mg of tobacco cut.
  • As the wrapping paper 4P35 wrapping paper manufactured by Mishima Paper Co., Ltd. was used.
  • the amount of alginine added is 4 wt% (27.6 mg) per chopping.
  • the amount of formaldehyde in the mainstream smoke at the single outlet was measured in the same manner as above without a filter.
  • the base cuts used for comparison were those obtained by adding 20 wt% spray of only water to the tobacco cuts.
  • the base notch was used to form the mainstream smoke at the single winding outlet.
  • the amount of aldehyde was measured.
  • Table 5 shows the results. Table 5 shows that the addition of arginine in increments can significantly reduce formaldehyde in mainstream smoke.
  • Example 4 The same measurement as in Example 4 was performed to evaluate the effect of reducing formaldehyde by various basic amino acids or basic amino acids in the presence of water.
  • Example 2 The same measurement as in Example 2 was performed in order to evaluate the formaldehyde reducing effect of various basic amino acids or basic amino acids in the presence of a surfactant.
  • a predetermined amount of an aqueous solution of arginine alone or an aqueous solution of arginine and various surfactants was added to the base filter ⁇ , and after 48 hours of harmony, mainstream smoke was applied in the same manner as above.
  • the amount of formaldehyde (FA) and the amount of increase in water ( ⁇ W) were measured.
  • the surfactant may be an ionic surfactant such as sodium sorbate, sodium oleate or sodium laurate, or a nonionic surfactant.
  • Sucrose laurate ester, sucrose myristate ester, sucrose palmitate ester or sucrose stearate ester was used. Table 7 shows the results.
  • Table 7 shows that the combined use of a basic amino acid and a surfactant can achieve a formaldehyde reduction effect even in the absence of water. It is considered that the reason for this is that the use of an aqueous solution containing arginine and a surfactant improves the wettability of the aqueous solution to the filter and improves the dispersibility of arginine.
  • Sucrose myristate ester Mitsubishi Chemical Foods Co., Ltd.
  • Glycerin fatty acid ester (decaglycerin monolaurate): RIKEN Vitamin Co., Ltd.
  • the tobacco filter 1 according to the present invention can also be applied in the form of a cigarette holder as shown in FIG.
  • This tobacco filter has a filter 31 provided inside a cylindrical cigarette holder body 41, and the filter 31 has a basic aluminum filter. No acid or basic amino acid salts are contained.
  • the cigarette holder body 41 is integrally connected to the suction port 42.
  • the use of such tobacco filters can also reduce aldehydes in mainstream tobacco smoke.
  • the use of the tobacco and tobacco filter of the present invention can effectively reduce aldehydes in mainstream tobacco smoke.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Paper (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

L'invention concerne une cigarette et filtre pour cigarette contenant un acide aminé basique ou un sel d'acide aminé basique. La quantité de l'acide aminé basique ou du sel d'acide aminé basique est de préférence d'au moins 1 mg par cigarette. Il est préférable que l'acide aminé basique ou le sel d'acide aminé basique soit ajouté sous la forme d'une solution aqueuse. Il est également possible d'ajouter un surfactant conjointement avec l'acide aminé basique ou le sel d'acide aminé basique.
PCT/JP2003/000040 2002-01-08 2003-01-07 Cigarette et filtre pour cigarette Ceased WO2003056945A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2003557317A JP3905886B2 (ja) 2002-01-08 2003-01-07 たばこおよびたばこ用フィルター
CA2472386A CA2472386C (fr) 2002-01-08 2003-01-07 Cigarette et filtre pour cigarette
AU2003202480A AU2003202480A1 (en) 2002-01-08 2003-01-07 Cigarette and cigarette filter
KR1020047010407A KR100596552B1 (ko) 2002-01-08 2003-01-07 담배 및 담배용 필터
EP03701019A EP1470760A4 (fr) 2002-01-08 2003-01-07 Cigarette et filtre pour cigarette
CNB038019736A CN1313038C (zh) 2002-01-08 2003-01-07 香烟以及香烟过滤嘴
UA20040806604A UA76021C2 (en) 2002-01-08 2003-07-01 Cigarette filter and a cigarette filter
US10/885,027 US20050000526A1 (en) 2002-01-08 2004-07-07 Cigarette and cigarette filter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002-001508 2002-01-08
JP2002001508 2002-01-08
JP2002-128953 2002-04-30
JP2002128953 2002-04-30

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/885,027 Continuation US20050000526A1 (en) 2002-01-08 2004-07-07 Cigarette and cigarette filter

Publications (1)

Publication Number Publication Date
WO2003056945A1 true WO2003056945A1 (fr) 2003-07-17

Family

ID=26625449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/000040 Ceased WO2003056945A1 (fr) 2002-01-08 2003-01-07 Cigarette et filtre pour cigarette

Country Status (10)

Country Link
US (1) US20050000526A1 (fr)
EP (1) EP1470760A4 (fr)
JP (1) JP3905886B2 (fr)
KR (1) KR100596552B1 (fr)
CN (1) CN1313038C (fr)
AU (1) AU2003202480A1 (fr)
CA (1) CA2472386C (fr)
RU (1) RU2273448C2 (fr)
TW (1) TW200302057A (fr)
WO (1) WO2003056945A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007319041A (ja) * 2006-05-30 2007-12-13 Daicel Chem Ind Ltd たばこフィルター用素材及びたばこフィルター
WO2009031246A1 (fr) * 2007-09-05 2009-03-12 Daicel Chemical Industries, Ltd. Matériau pour filtre à tabac et filtre à tabac
US9386802B2 (en) 2010-11-11 2016-07-12 Daicel Corporation Composite particle, cigarette filter and process for producing the same, and cigarette
JP2023505449A (ja) * 2019-12-17 2023-02-09 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 窒素含有求核性化合物を有するエアロゾル形成基体

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007125426A2 (fr) * 2006-02-22 2007-11-08 Philip Morris Products S.A. Article a fumer a ventilation
US20080135058A1 (en) * 2006-12-08 2008-06-12 Ted Calvin Germroth Tobacco smoke filter and method for removal of aldehydes from tobacco smoke
US7855261B2 (en) 2006-12-08 2010-12-21 Eastman Chemical Company Aldehyde removal
FI120526B (fi) * 2007-05-16 2009-11-30 Biohit Oyj Filtteri tupakkatuotteeseen
US8991403B2 (en) 2009-06-02 2015-03-31 R.J. Reynolds Tobacco Company Thermal treatment process for tobacco materials
US8944072B2 (en) 2009-06-02 2015-02-03 R.J. Reynolds Tobacco Company Thermal treatment process for tobacco materials
US8434496B2 (en) * 2009-06-02 2013-05-07 R. J. Reynolds Tobacco Company Thermal treatment process for tobacco materials
CN102499479A (zh) * 2011-11-03 2012-06-20 湖南中烟工业有限责任公司 一种可降低卷烟主流烟气重金属释放量的络合吸附剂及其制备和应用
CN102499476A (zh) * 2011-11-03 2012-06-20 湖南中烟工业有限责任公司 一种卷烟减害颗粒复合嘴棒及其制备和应用方法
CN102499477B (zh) * 2011-11-03 2014-04-16 湖南中烟工业有限责任公司 一种具有减害作用的卷烟滤棒添加剂及其制备和应用方法
GB201412752D0 (en) 2014-07-17 2014-09-03 Nicoventures Holdings Ltd Electronic vapour provision system
CN109105946A (zh) * 2017-06-22 2019-01-01 中国烟草总公司广东省公司 卷烟嘴过滤材料及其制备方法
CN109588772A (zh) * 2018-11-27 2019-04-09 韩庆斌 香烟过滤嘴材料及其制备方法以及由其制成的香烟过滤嘴

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6214774A (ja) * 1985-07-10 1987-01-23 中島　三夫 タバコ有害物質除去剤
JPS62232371A (ja) * 1986-03-31 1987-10-12 三井東圧化学株式会社 煙草の燃焼ガス用フイルタ−
JPH034766A (ja) * 1989-05-30 1991-01-10 T Hasegawa Co Ltd 乾燥果実エキスの製造方法及び香味変調剤
JPH11514888A (ja) * 1996-05-15 1999-12-21 レッサー，クレイグ 毒性化合物を除去するタバコ煙フィルタ
JP2001516771A (ja) * 1997-09-19 2001-10-02 サイオン・インターナショナル，インコーポレイテッド 抗酸化剤含有喫煙用製品

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968306A (en) * 1956-02-29 1961-01-17 Eastman Kodak Co Tobacco smoke filter capable of selective removal of aldehydes
ZA792187B (en) * 1978-05-16 1980-05-28 British American Tobacco Co Tobacco smoke filters
US4333484A (en) * 1978-08-02 1982-06-08 Philip Morris Incorporated Modified cellulosic smoking material and method for its preparation
CN1044583A (zh) * 1989-02-02 1990-08-15 欧内斯特·C·森纳斯 处理烟叶的方法和用此方法生产的烟叶
HU201865B (en) * 1989-04-28 1991-01-28 Pecsi Dohanygyar Tobacco-smoke filter of high efficiency
IL104930A (en) * 1992-03-25 1995-12-31 Reynolds Tobacco Co R Components for smoking articles and their manufacture
US5501238A (en) * 1993-01-11 1996-03-26 Von Borstel; Reid W. Cigarette filter containing a humectant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6214774A (ja) * 1985-07-10 1987-01-23 中島　三夫 タバコ有害物質除去剤
JPS62232371A (ja) * 1986-03-31 1987-10-12 三井東圧化学株式会社 煙草の燃焼ガス用フイルタ−
JPH034766A (ja) * 1989-05-30 1991-01-10 T Hasegawa Co Ltd 乾燥果実エキスの製造方法及び香味変調剤
JPH11514888A (ja) * 1996-05-15 1999-12-21 レッサー，クレイグ 毒性化合物を除去するタバコ煙フィルタ
JP2001516771A (ja) * 1997-09-19 2001-10-02 サイオン・インターナショナル，インコーポレイテッド 抗酸化剤含有喫煙用製品

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1470760A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007319041A (ja) * 2006-05-30 2007-12-13 Daicel Chem Ind Ltd たばこフィルター用素材及びたばこフィルター
WO2009031246A1 (fr) * 2007-09-05 2009-03-12 Daicel Chemical Industries, Ltd. Matériau pour filtre à tabac et filtre à tabac
US9386802B2 (en) 2010-11-11 2016-07-12 Daicel Corporation Composite particle, cigarette filter and process for producing the same, and cigarette
JP2023505449A (ja) * 2019-12-17 2023-02-09 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 窒素含有求核性化合物を有するエアロゾル形成基体

Also Published As

Publication number Publication date
JPWO2003056945A1 (ja) 2005-05-12
EP1470760A4 (fr) 2011-05-11
EP1470760A1 (fr) 2004-10-27
KR20040066936A (ko) 2004-07-27
RU2004124063A (ru) 2005-03-10
AU2003202480A1 (en) 2003-07-24
CN1313038C (zh) 2007-05-02
TW200302057A (en) 2003-08-01
CA2472386A1 (fr) 2003-07-17
JP3905886B2 (ja) 2007-04-18
RU2273448C2 (ru) 2006-04-10
CN1612699A (zh) 2005-05-04
CA2472386C (fr) 2010-03-30
KR100596552B1 (ko) 2006-07-06
US20050000526A1 (en) 2005-01-06

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