EP1213977A1 - Procede de filtration et filtre compose de cycles ou d'heterocycles azotes tels que l'adn ou l'arn destine notamment a la filtration de fumee de tabac et cigarette comportant un tel filtre - Google Patents
Procede de filtration et filtre compose de cycles ou d'heterocycles azotes tels que l'adn ou l'arn destine notamment a la filtration de fumee de tabac et cigarette comportant un tel filtreInfo
- Publication number
- EP1213977A1 EP1213977A1 EP00962594A EP00962594A EP1213977A1 EP 1213977 A1 EP1213977 A1 EP 1213977A1 EP 00962594 A EP00962594 A EP 00962594A EP 00962594 A EP00962594 A EP 00962594A EP 1213977 A1 EP1213977 A1 EP 1213977A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- molecules
- nitrogen
- active principle
- dna
- 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.)
- Granted
Links
Classifications
-
- 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 filtration method and a filter for general use, especially applicable to tobacco products, and in particular for the mouthpiece of a cigarette filter.
- the object of the invention is more particularly to protect the molecules of the human genome against the toxic carcinogens of inhaled smoke.
- Cigarette filters known to date generally contain polysaccharide derivatives, of natural or thermoplastic origin, polyesters, such as polyethylene and polypropylene terephthalate.
- Patent EP 434332 and EP 434339 of RJ Reynolds Tobacco Cie describe such filters, they can also contain dried tobacco grains. In these various patents, mention is made of the use of salts, acids, bases, surfactants, in a medium with basic PH.
- patent WO 96/00019 describes a cigarette filter enriched with Fe ++, Cu ++ or Mg ++ ions.
- the objective is the retention of free radicals and particularly the protection of metalloproteins.
- WO 96/10929 describes a free radical inhibitor, such as an O-alkylated derivative of 2,4-monofurfurylidene sorbitol, associated with an antioxidant, the action of which is to filter Polycyclic Aromatic Hydrocarbons (HPA), mainly 3,4-Benzo-a-pyrene (BaP), with known carcinogenic power.
- HPA Polycyclic Aromatic Hydrocarbons
- BaP 3,4-Benzo-a-pyrene
- fluoride has anti-tumor effects. It is involved in particular in the composition of dexamethasone and 5-fluorouracil.
- the filtration process according to the invention has a selective, direct chemical, anti-carcinogenic action. It is intended to filter toxic products, in particular polycyclic aromatic hydrocarbons (HPA) such as benzo (a) pyrene (BaP) and nitrosamines, contained in the tobacco smoke of a cigarette.
- HPA polycyclic aromatic hydrocarbons
- BaP benzo
- nitrosamines contained in the tobacco smoke of a cigarette.
- the filtration process includes the step of controlling the rate of toxic products relative to that of nicotine so that the reduction in the rate at the outlet of the filter is greater than a predetermined threshold.
- One of its main properties is the selective mode of action of the process according to the invention, with respect to toxic carcinogenic products in relation to nicotine. Its second main characteristic is its direct chemical action. That is to say, its action with respect to toxic carcinogenic products at the level of the very reactive site of DNA.
- the process according to the invention comprises the following steps:
- the step of capturing all or part of the toxic products by means of an active principle acting on said toxic products according to molecular processes comparable to those according to which the DNA and / or RNA of the human cell reacts with respect said toxic products the step of controlling the operating conditions of the filter by operating in a substantially non-aqueous medium and of basic pH, preferably greater than or equal to 8,
- the step of adjusting the mass of the active principle so that it is greater than or equal to 0.1% of the mass of the cigarette filter and preferably greater than or equal to 1% of the mass of the filter.
- the inventors have noted that it is with the minimum quantities of active principle and under the operating conditions mentioned above that it is possible to control the rate of toxic products, in particular the rate of polycyclic aromatic hydrocarbons (HPA) and of nitrosamines, compared to that of nicotine.
- HPA polycyclic aromatic hydrocarbons
- nitrosamines compared to that of nicotine.
- said active principle is composed of molecules consisting of one or more nitrogen rings or nitrogen heterocycles, preferably nitrogen heteroaromatics, in particular pentacycles or hexacycles or a combination of the two.
- said active principle must be in the form:
- the molecule of the active principle is DNA and / or RNA and / or a derivative of DNA or RNA, such as for example adenosine triphosphate (ATP), adenosine monophosphate cyclic (AMP), adenyl cyclase.
- the invention also relates to a cigarette filter implementing the method described above.
- the cigarette filter according to the invention has a selective, direct chemical, anti-carcinogenic action. It is intended to filter particularly polycyclic aromatic hydrocarbons (HPA) and in particular benzo (a) pyrene (BaP) as well as nitrosamines, in retaining the nicotine level and flavor aromas for the satisfaction and pleasure of the smoker.
- the filter comprises an active principle composed of molecules consisting of one or more nitrogen cycles or nitrogen heterocycles, and in particular nitrogen heteroaromatics, in particular pentacycles or hexacycles or a combination of the two.
- said active principle must be in the form of a chain of said molecules and / or of said molecules linked to a fiber, in particular a cellulose acetate fiber, in a common chemical arrangement.
- the mass of said nitrogenous cycles or heterocycles and particularly of nitrogenous heteroaromatics is at least equal to or greater than 0.1% of the total mass of the filter.
- the medium in which said nitrogenous heterocycles or heterocycles and particularly nitrogenous heteroaromatics operate is a substantially non-aqueous medium having a basic pH. Under these operating conditions, it has been found that it is possible to substantially reduce, at the outlet of the filter, the level of polycyclic aromatic hydrocarbons relative to nicotine.
- the rate can be reduced by more than 90% by retaining the nicotine level and flavor aromas for the satisfaction and pleasure of the smoker.
- other fibers of natural or artificial origin are also used, mainly aromatics of ethylene (for example, polyethylene terephthalate), propylene (for example, polypropylene terephthalate), fluorinated salt medium.
- the molecules are made of polymer in the broad sense.
- the active principle consists exclusively of molecules and / or said polymers.
- the mass of said nitrogenous cycles or heterocycles and particularly of nitrogenous heteroaromatics is at least equal or greater than 1% of the total mass of the filter.
- the humidity level of the filter is between 5 and 10%.
- the pH of the filter is greater than 8.
- the molecule of the active principle is DNA and / or RNA and / or a derivative of DNA or RNA, such as for example adenosine triphosphate (ATP), adenosine monophosphate cyclic or adenyl cyclase.
- ATP adenosine triphosphate
- adenosine monophosphate cyclic or adenyl cyclase adenosine monophosphate cyclic or adenyl cyclase.
- toxic carcinogenic products contained in tobacco smoke, directly affecting the DNA and / or RNA molecules of the human cell, are selectively captured by the filter according to molecular processes comparable to those according to which said toxic products act on the DNA and / or RNA of the human cell.
- the molecule of the active principle is added, on at least one of the nitrogen rings or nitrogen heterocycles and particularly of the nitrogen heteroaromatics, to at least one function chosen from a group comprising the functions:
- At least one molecule of the active principle is added with one or more sugars such as ribose or deoxyribose.
- at least one molecule of the active principle is added with one or more acid functions, in particular phosphoric acid (H3PO4) pentavalent and / or another molecule comprising a trivalent phosphorus.
- H3PO4 phosphoric acid
- the polymerization is carried out in the broad sense at the level of the nitrogen cycles, that is to say nitrogen heterocycles and particularly nitrogen heteroaromatics and / or added functions and / or acids and / or sugars.
- the molecule of the active principle comprises one or more atoms and / or one or more molecules and / or one or more radicals and / or one or more ions of a halogen, such as in particular fluorine.
- the molecule of the active principle is located in a medium containing halogenated salts, in particular sodium fluoride salts
- said fiber is partially halogenated, such as in particular by fluorine.
- said fiber, partially halogenated or not is in a medium comprising atoms, molecules, radicals or ions of a halogen, such as in particular fluorine.
- the invention also relates to a method of manufacturing a filter comprising an active principle composed of chains of molecules having the characteristics defined above. Said method comprises the step of extruding and / or rolling together said chains of molecules. In the case where said molecules are linked in a chemical arrangement common to fibers, in particular cellulose acetate fibers, said manufacturing process comprises the step of extruding and / or rolling together said fibers.
- the invention also relates to a filtration device of general application comprising an active principle composed of molecules and / or fibers having the characteristics and operating under the conditions defined above.
- the filtration device according to the invention is such that said molecules and / or said fibers are incorporated into separate compartments, or in the form of grains and / or filaments.
- the filtration device according to the invention is such that said molecules and / or said fibers are present in a gelatinous, liquid or gaseous physical state.
- the filtration device can be applied to the selective filtration of toxic products.
- the filtration device according to the invention can be applied to the selective purification of tobacco smoke, in order to maintain the usual levels of nicotine, for the satisfaction of the smoker, and of tar containing the flavors of tobacco, for the preservation of the taste. .
- the invention also relates to a cigarette comprising a filtration device such as that described above.
- the cigarette according to the invention comprises a tobacco rod 2. At one end of the rod 2 is mounted a filtration device 1 such as that described above.
- the invention protects molecules in the human genome against the toxic carcinogens of tobacco smoke.
- this filter has the particularity of preserving in their entirety the usual levels of nicotine and the tars of the aromas.
- This low-cost filter the maximum efficiency of which allows practical and industrial production for the best satisfaction of the smoker and his pleasure thanks to the preservation of the taste, while considerably reducing the risks involved, particularly in the field of bronchopulmonary and cardiovascular pathology.
- the invention in question here is intended to protect the human genome from attack by carcinogens, the main process involved in the mechanism of initiation and promotion of the cancer phenomenon.
- the invention is less concerned with indirect attack processes cells produced at the level of molecules such as metalloproteins or globulins involved in the immune response system.
- the carcinogenic etiogeny is due to molecules which are not always originally found in the tobacco itself, but which are intermediate pyrolysis derivatives formed along the stem of the cigarette through a cooling corridor to the filter during inhalation-aspiration.
- These derivatives, free radicals or carbocations, are electrophilic. Free radicals and carbocations are now better known as genotoxicity agents modifying the rules of duplication of DNA and / or constituting adducts with it. They can also be responsible for disorders in the DNA coding of proteins essential for cell life.
- the invention implements molecules of which several nucleophilic nuclei prevent the electrophilic attack of these agents.
- the molecules according to the invention filter, thanks to their quantity present in the filter, the toxins whose destiny would be to have a carcinogenic action in the body of the smoker either in situ, or after a process of metabolization in the faith of the smoker.
- the compounds and radicals to be filtered constitute powerful adducts with DNA by penetration into cell nuclei or after passage, for precancerogens, by bioactivating systems of the body, and cause mutagenic and carcinogenic processes. It is known that the carcinogenic process most often involves electrophilic atoms in molecules whose transmembrane passage to the cell nucleus is favored by a medium of positive electrical density.
- nucleophilic dipoles of voltage, ⁇ electronic clouds which form nucleophilic poles of attraction for electrophilic compounds and radicals.
- the components of the filter molecules according to the invention and in particular the nucleotides of DNA and RNA, obstruct the compounds and radicals to be filtered even before they reach the human genetic heritage.
- FIG. 1 represents the diagram of an example of a molecule according to the invention.
- the radicals RI, R2, R3 and R4 are amino functions, ketones, aldehydes, methyls, alkenes, alkyls, aryls, etc. These functions, added to the molecule, can be used to filter alkyl or aryl epoxides , sulphate esters, nitrosamines with direct carcinogenic power.
- radicals RI, R2, R3 and R4 can also be one or more atoms or a radical of a halogen such as fluorine.
- the molecules of the purine or pyrimidine type can be produced in the form of filaments, single-stranded strands obtained by denaturation of DNA, or strands of RNA most often simple. It is known that DNA or RNA can be obtained by culturing microorganisms, by bursting nuclei and by a gel electrophoresis method.
- the filter can use one or more halogens, but preferably fluorine, in the form of an atom, a molecule, a radical or an ion.
- fluorine can be previously added to a phenyl nucleus possible precursor of synthesis of the molecule according to the invention via a mineral acid, a Bronsted acid, or a Lewis acid .
- halogenation the syndrome of "polymer fever" or "Influenza Like” will be avoided by carrying out a partial halogenation of the fibers.
- the halogen salts used are preferably soluble salts of alkali and alkaline earth metals, for example sodium fluoride.
- the molecules according to the invention and / or the other fibers of the filter can be extruded or rolled together with halogen salts, as for example in the manufacturing process described in patent WO / 24078 of
- Certain toxic substances are to be excluded, such as the carboxylic acids of fluorine or their precursors, particularly fluoroacetic acid as well as certain dangerous organophosphates.
- the level of halogen used will not exceed the threshold imposed by the measures to restrict biodegradation and the level of consumable fluorine.
- the filter may also have, for the fibers of the molecules according to the invention and / or for the other fibers of the filter, a distribution with a high fluorine content and then with a lower fluorine content, from the center to the periphery of the filter or vice versa, or in separate compartments arranged according to the length of the filter.
- the filter as described here, has the function of filtering more effectively electrophilic compounds and radicals such as Polycyclic Aromatic Hydrocarbons (HPA) - and especially BaP - and Nitrosamines.
- HPA Polycyclic Aromatic Hydrocarbons
- the filter also comprises, in certain variant embodiments, surfactant solvents or other materials (acids of mineral or carboxylic type, bases or salts in particular for the conservation of a certain basic PH.
- surfactant solvents or other materials ascids of mineral or carboxylic type, bases or salts in particular for the conservation of a certain basic PH.
- the molecules of the filter according to the invention operate in a basic pH of greater than or equal to 8, thereby facilitating conservation of nicotine as described above.
- the acid, base and salt functions can either be added to the molecules according to the invention and / or to the other fibers of the filter substrate, or located at their contact. They can also be used for the halogenation of the molecule of the active principle and / or of the other fibers of the filter substrate.
- the greater cleanliness of the inhaled flow, combined with an action of decluttering of the tissues, allows a very favorable prognosis as regards the limitation of bronchopulmonary, cardiovascular pathology and mutagenic or carcinogenic processes.
- the filter is used for general filtration of pollutants and toxic products.
- the filter thus described is not necessarily in contact with tobacco; it can for example be housed in a cigarette holder.
- the mass of nitrogen rings and nitrogen heterocycles and particularly of nitrogen heteroaromatics present in the filter represents at least 0.1% and, preferably, more than 1% of the total mass of the filter. Tests performed.
- Standard-size cigarette filter injected with single-stranded salmon DNA filaments composed of about a thousand nucleotides, the mass of DNA being 10 mg per cigarette filter, the filter being dried before smoking and dosage.
- Humidity level 7 ⁇ 2%, PH: about 8
- the filter is injected with single-stranded strands of salmon DNA, length of approximately 2000 base pairs and for an amount equal to 10 mg for a conventional cigarette filter.
- Humidity level 7 ⁇ 2% PH: about 8
- the filter consists on its axis of a mixed compartment of filaments of salmon DNA and polypropylene terephthalate fibers, and of a compartment consisting only of these latter fibers.
- the mass of DNA filaments representing 10 mg for a conventional cigarette filter.
- the cigarette filter is made up of a mixture of linear filaments of salmon DNA tangled with polypropylene terephthalate fibers.
- the mass of DNA filaments representing 10 mg for a conventional cigarette filter.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9911552A FR2798302B1 (fr) | 1999-09-13 | 1999-09-13 | Filtre compose d'heterocycles azotes tels que l'adn destine notamment a la filtration de fumee de tabac, cigarette comportant un tel filtre |
FR9911552 | 1999-09-13 | ||
PCT/FR2000/002493 WO2001019210A1 (fr) | 1999-09-13 | 2000-09-08 | Procede de filtration et filtre compose de cycles ou d'heterocycles azotes tels que l'adn ou l'arn destine notamment a la filtration de fumee de tabac et cigarette comportant un tel filtre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1213977A1 true EP1213977A1 (fr) | 2002-06-19 |
EP1213977B1 EP1213977B1 (fr) | 2003-11-26 |
Family
ID=9549884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00962594A Expired - Lifetime EP1213977B1 (fr) | 1999-09-13 | 2000-09-08 | Procede de filtration et filtre compose de cycles ou d'heterocycles azotes tels que l'adn ou l'arn destine notamment a la filtration de fumee de tabac et cigarette comportant un tel filtre |
Country Status (8)
Country | Link |
---|---|
US (1) | US6866045B1 (fr) |
EP (1) | EP1213977B1 (fr) |
JP (1) | JP4808881B2 (fr) |
AT (1) | ATE254858T1 (fr) |
AU (1) | AU7426300A (fr) |
DE (1) | DE60006832D1 (fr) |
FR (1) | FR2798302B1 (fr) |
WO (1) | WO2001019210A1 (fr) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2004091753A1 (ja) * | 2003-04-16 | 2006-07-06 | 日生バイオ株式会社 | 有害物質の除去方法及び有害物質除去フィルター |
US20050016555A1 (en) * | 2003-07-24 | 2005-01-27 | Lyles Mark B. | Nucleic acid based filters |
EP1897455A1 (fr) * | 2005-04-28 | 2008-03-12 | Nissei Bio Co., Ltd. | Filtre de cigarette capable de supprimer une substance nocive |
WO2007043172A1 (fr) * | 2005-10-12 | 2007-04-19 | Nissei Bio Company, Limited | Filtre pour le tabac |
CN101360546A (zh) * | 2006-01-18 | 2009-02-04 | 日生生物股份有限公司 | 能除去有害物质的空气调节器用过滤器 |
JP5317394B2 (ja) * | 2006-05-30 | 2013-10-16 | 株式会社ダイセル | たばこフィルター用素材及びたばこフィルター |
US20100196275A1 (en) * | 2006-09-22 | 2010-08-05 | Moon-Shong Tang | Methods and products for neutralizing the harmful effects of combustion products |
JP2008068254A (ja) * | 2007-08-13 | 2008-03-27 | Nissei Bio Kk | 有害物質の除去方法及び有害物質除去フィルター |
JP2008030039A (ja) * | 2007-08-13 | 2008-02-14 | Nissei Bio Kk | 有害物質の除去方法及び有害物質除去フィルター |
US9192193B2 (en) | 2011-05-19 | 2015-11-24 | R.J. Reynolds Tobacco Company | Molecularly imprinted polymers for treating tobacco material and filtering smoke from smoking articles |
US10731018B2 (en) | 2015-08-11 | 2020-08-04 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Antioxidant polydihydropyridazine and polypyridazine foams from 1,2,4,5-tetrazine |
US10851192B2 (en) | 2015-08-11 | 2020-12-01 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Dihydropyridazine-based antioxidants and uses thereof |
US10619023B2 (en) | 2015-08-11 | 2020-04-14 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Green chemistry method of synthesizing polymer structures that can function as a built-in antioxidant |
WO2017172882A1 (fr) * | 2016-03-29 | 2017-10-05 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Matériaux de filtration de type mousse à base de pyridazine et de pyridazinone pour l'élimination des nucléophiles, des électrophiles, et des métaux |
US11352475B2 (en) | 2016-06-29 | 2022-06-07 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Method of formation of a robust network of foam through Diels-Alder reaction |
US10633517B2 (en) | 2017-03-10 | 2020-04-28 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Hydrogenated tetrazine-based antioxidants and free radical reaction inhibitors and uses thereof |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3982897A (en) * | 1972-09-25 | 1976-09-28 | Israel Herbert Scheinberg | Filter and detector and methods of using same in the removal and detection of carbon monoxide from, and in, a gas stream |
GB1503879A (en) * | 1976-02-19 | 1978-03-15 | Scheinberg I | Preparation and method of use of compounds and compositions effective for removal conversion and detection of carbon monoxide |
EP0058463A1 (fr) * | 1981-02-18 | 1982-08-25 | Gist-Brocades N.V. | Filtre pour la fumée de tabac |
US4498485A (en) * | 1982-08-05 | 1985-02-12 | Hem-Sub, Inc. | Interferon and interferon inducers combined with tobacco products |
JPS60151397U (ja) * | 1984-03-21 | 1985-10-08 | ピツプフジモト株式会社 | 喫煙用パイプ |
JPS6258981A (ja) * | 1985-04-08 | 1987-03-14 | 近藤 昭子 | 煙草フイルタ部の構造 |
US4735218A (en) * | 1984-09-09 | 1988-04-05 | Kondo Akiko | Tobacco filter |
US5105834A (en) | 1989-12-18 | 1992-04-21 | R.J. Reynolds Tobacco Company | Cigarette and cigarette filter element therefor |
CA2032378A1 (fr) | 1989-12-18 | 1991-06-19 | Barry L. Saintsing | Cigarette et bout-filtre |
US5746231A (en) * | 1993-01-11 | 1998-05-05 | Craig Lesser | Tobacco smoke filter for removing toxic compounds |
NZ267484A (en) | 1994-06-27 | 1997-12-19 | Ioannis Stavridis | Use of metal ion-porphyrin ring complexes in cigarette filters |
LU88544A1 (fr) | 1994-10-07 | 1996-04-29 | G L A D S A | Traitement anticarcinogène pour filtres de cigarettes ou autres du même genre |
-
1999
- 1999-09-13 FR FR9911552A patent/FR2798302B1/fr not_active Expired - Fee Related
-
2000
- 2000-09-08 DE DE60006832T patent/DE60006832D1/de not_active Expired - Lifetime
- 2000-09-08 WO PCT/FR2000/002493 patent/WO2001019210A1/fr active IP Right Grant
- 2000-09-08 EP EP00962594A patent/EP1213977B1/fr not_active Expired - Lifetime
- 2000-09-08 AU AU74263/00A patent/AU7426300A/en not_active Abandoned
- 2000-09-08 US US10/088,007 patent/US6866045B1/en not_active Expired - Fee Related
- 2000-09-08 JP JP2001522862A patent/JP4808881B2/ja not_active Expired - Fee Related
- 2000-09-08 AT AT00962594T patent/ATE254858T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0119210A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001019210A1 (fr) | 2001-03-22 |
US6866045B1 (en) | 2005-03-15 |
DE60006832D1 (de) | 2004-01-08 |
AU7426300A (en) | 2001-04-17 |
JP2003509033A (ja) | 2003-03-11 |
FR2798302B1 (fr) | 2001-12-21 |
JP4808881B2 (ja) | 2011-11-02 |
EP1213977B1 (fr) | 2003-11-26 |
FR2798302A1 (fr) | 2001-03-16 |
ATE254858T1 (de) | 2003-12-15 |
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