EP1949806A1 - Tabakfilter - Google Patents

Tabakfilter Download PDF

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Publication number
EP1949806A1
EP1949806A1 EP05793153A EP05793153A EP1949806A1 EP 1949806 A1 EP1949806 A1 EP 1949806A1 EP 05793153 A EP05793153 A EP 05793153A EP 05793153 A EP05793153 A EP 05793153A EP 1949806 A1 EP1949806 A1 EP 1949806A1
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EP
European Patent Office
Prior art keywords
filter
corn cob
cigarette
harmful substance
double
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.)
Withdrawn
Application number
EP05793153A
Other languages
English (en)
French (fr)
Inventor
Masaji Matsunaga
Fumito Yoshida
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.)
Nissei Bio Co Ltd
Original Assignee
Nissei Bio Co Ltd
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 Nissei Bio Co Ltd filed Critical Nissei Bio Co Ltd
Publication of EP1949806A1 publication Critical patent/EP1949806A1/de
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the present invention relates to a cigarette filter containing a harmful substance-eliminating material comprising DNA and/or a corn cob powder capable of effectively eliminating harmful substances in mainstream smoke of cigarettes in smoking, and less deteriorating the flavor characteristic of cigarette and air permeability of filter.
  • a filter consisting of cellulose acetate fiber has been widely used because it does not deteriorate flavor in smoking, and can adsorb and eliminate harmful components in mainstream smoke of cigarettes.
  • filtration efficiency of filter is improved in such manner that cellulose acetate fibers are processed into a crimped tow, and the fineness of single fiber in this tow is decreased, or the filled amount of fibers is increased.
  • inorganic adsorbents such as active carbon and zeolite are added to the above-described cigarette filters, as a typical example, the followings can be listed:
  • a material for adsorbing/eliminating harmful components as an example, known are soil, sand, gravel, clay, stone, concrete, asphalt, brick, block, carbon such as.active carbon and carbon black, zeolite, polymer, plastic, elastomer material, metal, metal alloy such as steel, glass, glass fiber, ceramic, textiles such as cloth and knit, cellulosic material, and combinations thereof.
  • Patent document 1 Japanese Patent Application Laid-open No. Hei 02-308784
  • Patent document 2 Japanese Patent Application Laid-open No. 2001-95552
  • Patent document 3 French patent No. 2798302
  • a cigarette filter capable of eliminating harmful substances in mainstream smoke of cigarettes has not only the harmful substance eliminating capability but eliminates flavor characteristic of cigarette, namely, a chemical substance as the original flavor as well, or adds flavor of material used in the filter, which deteriorates the flavor of cigarette. Further, there may be a case that air permeability of filter is deteriorated, resulting in resistance to suction of cigarette smoke, which leads to quality loss of cigarette, thus care should be exercised in these points.
  • the present inventors have keenly studied to solve the above-described problem in the conventional techniques, as a result, unexpectedly found the following: using a corn cob powder on which DNA is attached as a harmful substance eliminating substance, by having the harmful substance-eliminating material contained in a cigarette filter, harmful substances in mainstream smoke of cigarettes can be adsorbed/eliminated more effectively than, not to mention, the case where a conventional active carbon or the like is contained in a cigarette filter, and, also, than the case where only corn cob powder or only DNA is contained in a cigarette filter; moreover, the flavor characteristic of cigarette and excellent air-permeability of filter can be maintained, and completed the present invention.
  • the present invention aims to provide a cigarette filter capable of very effectively adsorbing carcinogens such as dioxins and benzpyrene and maintaining the flavor characteristic of cigarette and air permeability of filter.
  • the present invention relates to a cigarette filter containing a harmful substance-eliminating material comprising a double-stranded DNA and/or a corn cob powder.
  • the double-stranded DNA contained in the harmful substance-eliminating material is attached onto the surface of the corn cob powder.
  • the corn cob powder contained in said harmful substance-eliminating material is a corn cob powder which is dried to contain a water content of 5 mass % or less.
  • said harmful substance-eliminating material is mixed in a filter rod consisting of a fibrous filter material to result in the cigarette filter of the present invention, in this case, preferably, the harmful substance-eliminating material may comprise a double-stranded DNA and/or a corn cob powder having a particle diameter of 150 ⁇ m to 500 ⁇ m.
  • the harmful substance-eliminating material may comprise a double-stranded DNA and/or a corn cob powder having a particle diameter of 500 ⁇ m to 1000 ⁇ m.
  • the harmful substance eliminated by the cigarette filter of the present invention may be dioxins or/and benzpyrene.
  • a harmful substance-eliminating material by the constitution that a double-stranded DNA is attached onto the surface of corn cob powder, harmful substances in cigarette smoking, particularly, dioxins, benzpyrene and the like are trapped by intercalation between the double-stranded DNA molecules, at the same time, the harmful substances can also be adsorbed by a porous structure which the corn cob powder has, thereby it becomes possible to eliminate the harmful substances in mainstream smoke effectively.
  • the double-stranded DNA is hardly dropped in comparison with the direct attachment of the double-stranded DNA onto a cigarette filter (fibrous filter material), giving a merit that the harmful substance eliminating capability can be kept for a long time.
  • the particle diameter and used amount of the corn cob powder it is possible to maintain the flavor characteristic of cigarette and excellent air-permeability of filter at the same time while having the above-described harmful substance eliminating capability.
  • corn cob powders are usually treated as an industrial waste in agricultural regions, so that one kind of harmful substance-eliminating materials can be cheaply procured.
  • the double-stranded DNA contained in the harmful substance-eliminating material of the present invention consists of two polynucleotide chains of a helical form (double helix), for example, it is preferably DNA obtained from milt (testis) of fish such as salmon, sardine and cod, or DNA obtained from thymus of mammals or birds such as cow, pig and chicken.
  • Double-stranded DNA is bonded by hydrogen bond in such manner that both planar bases having a structural complementation protrude toward the central part of helix being vertical to the axis of helix from sugar-phosphoric acid skeleton of two polynucleotide chains.
  • Between pairs of the bases of two chains of DNA in the case of B type structure, there is a gap of about 1.1 nm wide and 0.34 nm high, a small molecule having a planar structure can penetrate in this gap, which is called "intercalation.” There is a case where this phenomenon is accelerated by an electric charge or hydrophobicity of a small molecule.
  • Harmful substances to human such as dioxins are often composed of a plurality of benzene rings, and these have a planar structure. Therefore, by utilizing the double-stranded DNA, it is possible to trap/eliminate harmful substances generated from mainstream smoke of cigarettes in smoking.
  • the one which can be attached onto the external surface of corn cob powder may be enough, for example, it may be a powder-like, fiber-like or film-like form, preferably a powder-like, in particular, preferably a fine powder-like form.
  • the double-stranded DNA By making the double-stranded DNA into a fine powder-like form, the total surface area of the double-stranded DNA becomes relatively large, which can further improve the harmful substance trapping /eliminating capability.
  • the corn cob powder contained in the harmful substance-eliminating material of the present invention is the one obtained by grinding a corn cob part, preferably the one obtained by grinding a corn cob part.
  • the one obtained by grinding after a corn cob part is dried in the sun or by a dryer is mentioned.
  • the shape of the corn cob powder is not particularly limited, and it may be various shapes obtained by grinding (for example, polyhedron such as tetrahedron, hexahedron and octahedron, sphere, flat sphere or the like). Additionally, it is known that the internal structure of the corn cob powder is porous and shows a honeycomb structure (comb of bees) and further has a number of small holes in the faces of dividing walls forming a hole (by Seiki Ishigouoka et. al, lecture summary at general convention of Japanese Association for Experimental Animal Technologists), and it is assumed that harmful substances are adsorbed in such small holes. Namely, the harmful substance eliminating capacity of corn cob powder is thought to be resulted from the internal structure that it has in itself.
  • the particle diameter of the corn cob powder is considered and suitably chosen so that the powder can be mixed in a filter rod consisting of a fibrous filter material, or a layer composed of a harmful substance-eliminating material can be interposed between a plurality of filter rods consisting of the fibrous filter material and can have an effective harmful substance eliminating capability and also maintain the flavor of cigarette and an excellent air-permeability of cigarette filter.
  • the particle diameter is preferably in a range of 150 ⁇ m to 500 ⁇ m. Further, in the case of being interposed between the filter rods as a layer composed of corn cob powder, the particle diameter is preferably in a range of 500 ⁇ m to 1000 ⁇ m.
  • the corn cob powder is preferably in a dried state, and the water content is preferably 5 mass % or less.
  • the harmful substance-eliminating material of the present invention is preferably the one that a double-stranded DNA is attached on the surface of corn cob powder, in this case, the double-stranded DNA can be attached by spraying it onto the corn cob powder.
  • the double-stranded DNA can be attached on the corn cob powder by a physical force, for example, an intermolecular force, an electrostatic force, or chemical bonds such as covalent bond, ion bond and coordinated bond, or both bonds thereof.
  • a physical force for example, an intermolecular force, an electrostatic force, or chemical bonds such as covalent bond, ion bond and coordinated bond, or both bonds thereof.
  • the harmful substance-eliminating material of the present invention may be mixed in a filter rod consisting of a fibrous filter material, or a layer composed of a harmful substance-eliminating material is formed, and the layer may be interposed between a plurality of filter rods consisting of the fibrous filter material.
  • the harmful substance-eliminating material is mixed in a filter rod consisting of the fibrous filter material
  • the distribution of the harmful substance-eliminating material in the filter rod from consideration of exhibition of effective adsorbing/eliminating effect on harmful substances, it is preferably distributed partially in one terminal side contacting cigarette in a cigarette filter.
  • a layer composed of a harmful substance-eliminating material is formed, and the layer is interposed between a plurality of filter rods consisting of the fibrous filter material, namely, in the case of a sandwich structure that the layer is sandwiched with the fibrous filter materials, from consideration of exhibition of effective adsorbing/eliminating effect on harmful substances, it is preferable to interpose the layer near the central part of a cigarette filter.
  • Amount of harmful substance-eliminating material double-stranded DNA and/or corn cob powder
  • the used amount of the harmful substance-eliminating material of the present invention namely the used amount of the double-stranded DNA and/or the corn cob powder is considered and suitably chosen so that a harmful substance eliminating capability is effectively obtained in processing into a cigarette filter and can maintain the flavor of cigarette and excellent air-permeability of cigarette filter.
  • the double-stranded DNA is used in a range of 0.001 mass % to 0.1 mass % relative to the filter rod, preferably in a range of 0.002 mass % to 0.05 mass %, and more preferably in a range of 0.005 mass % to 0.01 mass %
  • the corn cob powder is used in a range of 0.05 mass % to 10 mass %, preferably in a range of 0.1 mass % to 5 mass %, and more preferably in a range of 0.3 mass % to 1 mass %.
  • the double-stranded DNA is used in a range of 0.0001 mass % to 0.1 mass % relative to the filter rod, preferably in a range of 0.001 mass % to 0.05 mass %, and more preferably in a range of 0.003 mass % to 0.01 mass %
  • the corn cob powder is used in a range of 0.01 mass % to 10 mass %, preferably in a range of 0.05 mass % to 3 mass %, and more preferably in a range of 0.1 mass % to 1.5 mass %.
  • a raw material commonly used for a cigarette filter may be used, for example, there may be cellulose fiber, cellulose ester fiber, for example, organic acid ester such as cellulose acetate, cellulose propionate and cellulose butyrate; mixed acid ester such as cellulose acetate propionate and cellulose acetate butyrate; and cellulose ester derivatives such as polycaprolactone-grafted cellulose ester. These may be used alone, or in combination of 2 kinds or more thereof.
  • the cigarette filter of the present invention may also contain a material capable of further eliminating harmful substances, for example, active carbon, fragrances or the like, as long as the harmful substance eliminating capability of the double-stranded DNA and/or corn cob powder is not deteriorated, and the flavor of cigarette and excellent air-permeability are maintained.
  • a material capable of further eliminating harmful substances for example, active carbon, fragrances or the like, as long as the harmful substance eliminating capability of the double-stranded DNA and/or corn cob powder is not deteriorated, and the flavor of cigarette and excellent air-permeability are maintained.
  • Example 2 a cigarette filter for test was obtained in the same manner as in Example 1 except that only the corn cob powder used in Example 1 was used as a granular layer.
  • a cigarette filter for test was obtained in the same manner as in Example 1 except that a granular layer was composed by using an active carbon (manufactured by Senetin Corporation (Korea), particle diameter of 0.51 mm or more) in 189 mg/piece.
  • an active carbon manufactured by Senetin Corporation (Korea), particle diameter of 0.51 mm or more
  • a cigarette filter for test was obtained by using only an acetate filter commercially available (2.1 cm width in longitudinal direction).
  • Example 1 The cigarette filters for test prepared in Example 1 and Comparative examples 1 to 3 were stored under the atmosphere of relative humidity at 60% and temperature at 22°C for 48 hours and more.
  • a commercially available cigarette manufactured by JT Corporation, product name: Seven Star
  • the cigarette part was also stored under the atmosphere of relative humidity at 60% and temperature at 22°C for 48 hours and more, and it was connected with the cigarette filter for test just before the start of smoking test to give a cigarette for test.
  • Test example 1 Test of harmful substance eliminating capability
  • the average concentration of benzpyrene in mainstream smoke decreases by about 54% compared with the case of acetate filter alone, and it decreases by about 30% compared with active carbon, and about 12% compared with corn cob powder alone, which made it clear to have a high adsorbing/eliminating effect on benzpyrene.
  • Test example 2 Test of smoking feeling
  • the four kinds of cigarettes for test prepared in the above procedure were smoked by 30 subjects, and the results were compared in the viewpoints of flavor and suction feeling for one that DNA-attached corn cob powder was added, one that only corn cob powder was added, one that an active carbon was added, and acetate filter alone.
  • Fig. 1 is a diagram showing the detected amount of benzpyrene in mainstream smoke in different cigarette filters for test.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP05793153A 2005-10-12 2005-10-12 Tabakfilter Withdrawn EP1949806A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/018812 WO2007043172A1 (ja) 2005-10-12 2005-10-12 タバコ用フィルタ

Publications (1)

Publication Number Publication Date
EP1949806A1 true EP1949806A1 (de) 2008-07-30

Family

ID=37942441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05793153A Withdrawn EP1949806A1 (de) 2005-10-12 2005-10-12 Tabakfilter

Country Status (4)

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US (1) US20090183745A1 (de)
EP (1) EP1949806A1 (de)
JP (1) JPWO2007043172A1 (de)
WO (1) WO2007043172A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012211043A (ja) * 2011-03-31 2012-11-01 Sony Corp 多孔質炭素材料、吸着剤、経口投与吸着剤、医療用吸着剤、血液浄化カラム用の充填剤、水浄化用吸着剤、クレンジング剤、担持体、薬剤徐放剤、細胞培養足場材、マスク、炭素／ポリマー複合体、吸着シート、及び、機能性食品
CN102860582B (zh) * 2012-10-22 2014-09-03 红云红河烟草(集团)有限责任公司 卷烟滤棒添加剂及其制备方法和应用
EP3409786A1 (de) * 2017-05-31 2018-12-05 Rhodia Acetow GmbH Markierte celluloseacetatfasern, herstellungsverfahren und produkte mit solchen fasern
CN111418889B (zh) * 2020-03-16 2022-02-08 云南中烟工业有限责任公司 一种橙花油胶囊干珠、其制备方法及其在烟草中的用途

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Publication number Priority date Publication date Assignee Title
US3100492A (en) * 1962-04-23 1963-08-13 William C Schmidt Corncob material cigarette
JPH02308784A (ja) * 1989-05-22 1990-12-21 Tdk Corp たばこ用フィルタ
US4924762A (en) * 1989-07-21 1990-05-15 W. A. Lane, Inc. Solar powered air filter system
JPH04211307A (ja) * 1990-02-21 1992-08-03 Hisakazu Ikeda 草質材破砕物および用途
GB9305066D0 (en) * 1993-03-12 1993-04-28 British American Tobacco Co Improvements relating to filtration materials
FR2798302B1 (fr) * 1999-09-13 2001-12-21 Frederic Maillard Filtre compose d'heterocycles azotes tels que l'adn destine notamment a la filtration de fumee de tabac, cigarette comportant un tel filtre
JP2001095552A (ja) * 1999-09-28 2001-04-10 Daicel Chem Ind Ltd たばこ煙用フィルター
JP2002102689A (ja) * 2000-07-27 2002-04-09 Mitsubishi Chemicals Corp 炭素質吸着剤
US6610648B2 (en) * 2000-12-22 2003-08-26 Givaudan Sa Malodor counteractant compositions
JP4028802B2 (ja) * 2001-02-22 2007-12-26 フィリップ・モーリス・プロダクツ・インコーポレイテッド 紙巻きたばこ及び下流香味添加を持つフィルター
RU2264767C2 (ru) * 2001-10-30 2005-11-27 Джапан Тобакко Инк. Сигаретный фильтр и сигарета с фильтром
WO2004091753A1 (ja) * 2003-04-16 2004-10-28 Nissei Bio Co., Ltd. 有害物質の除去方法及び有害物質除去フィルター
JP3101223U (ja) * 2003-10-24 2004-06-10 日生バイオ株式会社 タバコ用ホルダー
US7407121B2 (en) * 2004-12-28 2008-08-05 Kerns Kevin C Method and process for providing a controlled batch of micrometer-sized or nanometer-sized coal material

Non-Patent Citations (1)

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Title
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Publication number Publication date
WO2007043172A1 (ja) 2007-04-19
US20090183745A1 (en) 2009-07-23
JPWO2007043172A1 (ja) 2009-04-16

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