EP1750529B1 - Tripe de tabac a faible teneur en azote - Google Patents

Tripe de tabac a faible teneur en azote Download PDF

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Publication number
EP1750529B1
EP1750529B1 EP05739814A EP05739814A EP1750529B1 EP 1750529 B1 EP1750529 B1 EP 1750529B1 EP 05739814 A EP05739814 A EP 05739814A EP 05739814 A EP05739814 A EP 05739814A EP 1750529 B1 EP1750529 B1 EP 1750529B1
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EP
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Prior art keywords
tobacco
refined
fiber portion
extract
aqueous
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EP05739814A
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German (de)
English (en)
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EP1750529A1 (fr
Inventor
John-Paul Mua
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Brown and Williamson Holdings Inc
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Brown and Williamson Holdings Inc
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    • 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
    • A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • 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
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted 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
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco

Definitions

  • This invention relates generally to tobacco and reconstituted tobacco smoking materials and methods of making same. More particularly, the present invention relates to the materials and methods that provide smoking materials with low nitrogen content.
  • Tobacco material contains various nitrogenous compounds that can adversely affect its smoke quality.
  • these nitrogenous compounds are proteins, amino acids, heterocyclic aromatic amines, tobacco specific nitrosamines (TSNA), as well as other compounds formed by pyrolysis or transfer of these nitrogenous compounds. It has been determined that tobacco quality is improved by reducing its nitrogen content. It has been found to be relatively easy to remove protein from uncured tobacco leaf, however there are disadvantages to removing protein before curing. The protein broken down during curing form flavor compounds that are important contributors to the organoleptic properties of the smoke. Another disadvantage is that efficient extraction of green leaf usually necessitates tobacco structural changes which make it difficult to produce shredded tobacco suitable for use as a cigarette filler. Tobacco processing sometimes includes steps in which the nitrogen content of the tobacco is reduced, so as to improve the smokability of the tobacco. However, nitrogenous compounds, especially proteins, are difficult to extract from cured tobacco lamina, stem, and fiber cell walls.
  • Plant proteins are divided into four major classes: albumins; globulins; prolamins (also known as gliadins); and, glutelins.
  • Albumins are soluble in water, whereas globulins are soluble in dilute salt solutions.
  • Prolamins are soluble in dilute acid or alkali solutions, while glutelins are soluble in alcohol solutions.
  • Insoluble proteins make up 85% to 95% of the total proteins found in cured tobacco. These insoluble proteins are globular in conformation, and are bound to lipoidal organocellular membranes of fiber or cellulose cell walls.
  • Solubilization and extraction of these insoluble proteins have proven difficult when using water or solvents under moderate digestion conditions (i.e. less than 100° C at 4.48-4.83 bar (65-70 psig) and with shredded tobacco of size suitable for cigarette manufacture. Partial removal of protein from cured tobacco can be accomplished by extraction with water, with the efficiency of the extraction improving as the particle size is reduced. However, for shredded tobacco of the size normally used for cigarette manufacture, most of the protein cannot be extracted by water alone. This difficulty is due in large part to the compact and rigid structure of fiber cells. Penetration of rigid cell wall structure by solvents has proven feasible only after thermal and/or mechanical sample treatment. However, the common result of such sample treatment is poor recovery of the solvated particulate material. Moreover, cell wall penetration does not necessarily lead to protein solubilization, since plant proteins differ in their conformity and solubilization patterns.
  • Bernasek et al. U.S. Pat. No. 4,887,618
  • tobacco residue remaining after extraction is separated from the solution, mixed with water and treated with a proteolytic enzyme.
  • the protein-reduced tobacco is separated from the enzyme solution, rinsed and dried.
  • the water extract is concentrated and added back to the protein reduced tobacco.
  • the advantage described by Bernasek et al. for this process is that the water soluble flavor components of tobacco and the nicotine can be retained in the final product.
  • DeGrandpre et al. (U.S. Pat. No. 5,311,886 ) teaches a process where cut tobacco is extracted in an aqueous solution having a surfactant and proteolytic enzyme.
  • the proteolytic enzyme if used, is chosen from the group comprising the bacterial and fungal enzymes.
  • the enzymes used commercially in the food and detergent industries ie. Savinase*, Neutrase*, Enzobake* or Alcalase*
  • These enzymes were added to the solution in the concentration range 0.1% to 5% w/w of the tobacco material. *Trade-mark
  • Mua, et al. (U.S. Pat. No. 6,508,254 ) relates to a method for providing a reconstituted tobacco material having a reduced nitrogenous content without having the problems associated with the use of enzymes.
  • the tobacco material in the form of flue cured and burley whole leaf, stems, fines, lamina or scraps, and/or burley stems was first contacted with an aqueous solvent.
  • the resulting liquid extract was then separated from the tobacco fiber portion.
  • the tobacco-fiber portion was then contacted with a solution containing sodium acetate and/or sodium hydroxide and/or potassium hydroxide. This solution was also separated from the tobacco fiber portion.
  • the tobacco fiber portion may then have been washed, refined and processed into reconstituted tobacco sheets.
  • the liquid extract from the aqueous solvent extraction may have been concentrated and added back to the sheets.
  • the present invention relates to a method for providing a reconstituted tobacco containing material having a reduced nitrogenous content.
  • the process starts with flue cured and / or burley tobacco in the form of whole leaf, stems, fines, lamina or scraps.
  • the tobacco material is first contacted with an aqueous solvent.
  • the resulting liquid extract is separated from the tobacco fiber portion.
  • the tobacco fiber portion is then processed according to the present invention.
  • the weak extract liquid (WEL) may be discarded, processed and/or concentrated and added back to the processed fiber portion.
  • the tobacco fiber portion is then refined and digested with an alkali solution.
  • the resulting tobacco material is then mixed with cellulose fibers and optionally inert materials.
  • the inert materials may be inorganic or organic.
  • the inorganic inert material that may be mixed with the tobacco fibers and cellulose includes CaCO 3 , MgO, MgCO 3 and combinations thereof.
  • the organic inert materials that may be mixed with the tobacco fibers and cellulose include chitosan, liposan and combinations thereof. Additionally, both the organic and inorganic inert materials may be mixed together with the tobacco and cellulose material.
  • These combined materials may then be cast into sheet via a papermaking process or a binder and a humectant may be added and the material cast into sheet via bandcast sheet processing.
  • the inert materials may include up to 20% of the finished sheet produced by the present invention.
  • the tobacco fiber portion may make up to 50% of the finished sheet produced by the present invention.
  • the finished sheet includes between approximately 10% to
  • the liquid extract or WEL from the aqueous solvent extraction may be discarded or added back to the fiber portion. If the WEL is to be added back to the fiber portion, it may be processed and/or concentrated. If the smoking material is to be cast into sheet by a paper making process, then the WEL is added back directly to the formed sheet. If the smoking material is to be cast into sheet by a bandcast process, then the WEL is added back just prior to the bandcast sheet processing. These finished sheets may then be used in smoking articles, such as cigarettes.
  • the reduction of nitrogenous compounds in the smoking material provides for improved smokability and a reduction in nitrogen containing pyrolitic products emitted from smoking articles which contain the tobacco material.
  • the present invention is directed to a method for reducing the nitrogenous content of a smoking material.
  • a better understanding of the present invention will be realized from the hereafter processes and the Examples following such description.
  • tobacco materials 10 in the form of flue cured and/or burley stems, scraps, fines, and cut lamina are contacted at process station 11 with an aqueous solvent, such as water, at a temperature of about 60° C to 90° C for about 0.25 to 1 hour.
  • an aqueous solvent such as water
  • the contacting of the tobacco with an aqueous solvent, process station 11, may be conducted in a tank or similar mixing vessel in which the solvent and tobacco are heated and may be agitated or stirred.
  • the resulting aqueous tobacco extract or weak extract liquid (WEL), containing flavor compounds is separated from the tobacco fiber portion at process station 12.
  • WEL weak extract liquid
  • the tobacco/solvent mixture formed at process station 1.1 is then pumped into a centrifuge from the mixing vessel and centrifugally separated or alternatively the mixture may be filtered to remove the tobacco fiber portion 17 from the WEL 13 at process station 12.
  • the WEL 13 may be reserved for reapplication to the fiber portion 17 with or without separate processing 14.
  • the WEL 13 may be deproteinated by contacting it with a solid phase adsorbent at process station 14.
  • a solid phase adsorbent such as such as a bentonite and carbon containing adsorbent, is mixed with the WEL 13 in a vessel and then separated therefrom by centrifugation, or a similar separation process well known in the art.
  • the WEL 13, whether treated at process station 14 or untreated, containing flavor compounds may then be concentrated at process station 16 by vacuum evaporation.
  • the tobacco fiber portion 17 may undergo several alternative processes.
  • the tobacco fiber portion 17 may be refined and digested at process station 18.
  • the refining process at process station 18 consists of fiberizing or breaking down the tobacco into smaller fibers.
  • the digestion process at process station 18 consists of adding one part of the refined tobacco to about eight parts of an alkali solution having about 1.25 % to 12 % NaOH or KOH.
  • the tobacco is digested in the alkali solution at about 76.6 to 87.8°C (170° F to 190° F) for up to 3 hours.
  • digestion may be accomplished by autoclaving the tobacco at about 120° C for about 15 to 30 minutes at about 1.17 to 1.80 bar (17 to 27 psig).
  • the resulting tobacco material is then mixed with cellulose fibers and optionally inert materials at process station 19.
  • Tobacco may make up to 50% of the sheet formed at process station 21.
  • tobacco will make up between about 10% to 50% of the sheet formed at process station 21.
  • the optional inert materials at process station 19 may be inorganic or organic.
  • the inorganic inert materials that may be mixed with the tobacco fibers and cellulose at process station 19 include CaCO 3 , MgO, MgCO 3 and combinations thereof.
  • the organic inert materials that may be mixed with the tobacco fibers and cellulose at process station 19 include chitosan, liposan and combinations thereof. Additionally, both the organic and inorganic inert materials may be mixed together with the tobacco and cellulose material at process station 19.
  • the inert materials added at process station 19 may include up to 20% of the sheet formed at process station 21. These combined materials may then be mixed with the WEL 13, whether treated 14, untreated 13 and/or concentrated 16.
  • a binder and humectant is added to the mixture.
  • the mixture resulting from process station 20 is then cast into sheets via a bandcast process at process station 21.
  • the sheets resulting from process station 21 is then cut and added to tobacco producing a tobacco blend at process station 34.
  • the process of the present invention may produce sheet via a paper making process.
  • Two embodiments are shown in Figure 1 to incorporate a paper making process station.
  • the tobacco fiber portion 17 is refined and digested at process station 26.
  • the refined and digested tobacco fiber is then mixed with cellulose fibers and optionally inert materials at process station 27.
  • the optional inert materials at process station 27 may be inorganic or organic.
  • the inorganic inert materials that may be mixed with the tobacco fibers and cellulose at process station 27 include CaCO 3 , MgO, MgCO 3 and combinations thereof.
  • the organic inert materials that may be mixed with the tobacco fibers and cellulose at process station 27 include chitosan, liposan, and combinations thereof. Additionally, both the organic and inorganic inert materials may be mixed together with the tobacco and cellulose material at process station 27.
  • the inert materials may include up to 20% of the sheet formed at process station 28.
  • the tobacco fiber portion may make up to 50% of the sheet formed at process station 28.
  • These combined materials resulting from process station 27 are then made into sheets via a paper making process at process station 28.
  • the paper sheet resulting from process station 28 may then have the WEL 13, whether treated 14, untreated 13 and/or concentrated 16 added back at process station 29.
  • the paper sheets resulting from process station 29 are then cut and added to tobacco producing a tobacco blend at process station 34.
  • Burley tobacco in the form of whole leaf, stems, fines, lamina and scraps was first extracted with water. This was accomplished by placing approximately 1 part of tobacco material into a vessel having approximately 11 parts of water. The tobacco and water were contacted at about 71°C (160° F) for about 30 minutes. The tobacco and water was periodically mixed during this extraction. The tobacco and extract were then separated by basket centrifuge forming a WEL and an extracted tobacco fiber. The WEL was discarded, while the fiber was refined or fiberized.
  • a portion of the extracted burley tobacco fiber was formed into sheet with a MKS sheet former and analyzed to provide control data.
  • Another portion of the fiber was treated with Savinase* in accordance with the process in DeGrandpre et al. (U.S. Pat. No. 5,311,886 ). This was accomplished by placing approximately 3.8 to 4.8 kg of extracted tobacco fiber into solution having approximately 200 ml. Savinase*, 40 g NaOH and 114 L water. The tobacco fiber was digested in the solution at about 57° C for about 30 minutes while the solution was periodically stirred. The Savinase* solution was then separated from the tobacco fiber by basket centrifuge and discarded.
  • the Savinase* treated burley tobacco fiber was rinsed three times with a salt solution having 1.84 kg NaCl in 80 L water.
  • the rinsed burley tobacco fiber was autoclaved (heated to 121°C and held for 15 min, at 1.17 bar (17 psig) to inactivate any remaining enzymes and formed into sheet with a MKS sheet former and analyzed for Hoffmann anlaytes.
  • a separate portion of the burley tobacco fiber was treated with alkali in accordance with Mua et al. This was accomplished by adding 1 part of tobacco fiber having about 60% moisture to about 8 parts of an alkali solution having about 2.5 % NaOH. The tobacco was digested in the alkali solution at about 190° F for about 2 hours. The tobacco fiber was then separated by basket centrifuge and the alkali solution was discarded. Water was then added to the digested tobacco fiber after which it was refined and formed into sheet with a MKS sheet former and analyzed for Hoffmann analytes.
  • burley tobacco fiber was processed by the method claimed in the present invention. This was accomplished by adding cellulose pulp and CaO 3 filler to the extracted tobacco fiber forming a tobacco containing material having approximately 25% tobacco. This tobacco containing material was then formed into sheets with a MKS sheet former and the resulting sheets were analyzed for Hoffmann analytes. The analytical results of this example are tabulated below.
  • the present invention was shown to substantially reduce the total nitrogen and protein content in the smoking material. Neither the Savinase* nor the alkali treated tobacco lowered the nitrogen and protein content of the smoking material near the 73% and 93% reductions as obtained in this example.
  • a mixture of tobacco having flue and burley tobacco in a ratio of about one to one was processed in accordance with the procedures in Example 1 to obtain a washed flue /burley control, Savinase* treated, and alkali treated tobacco sheets.
  • the flue/burley tobacco was processed in accordance with the present invention where a finished base sheet was produced having 15% tobacco and separately 50% tobacco. These base sheets were analyzed for Hoffmann ayalytes and the results are as shown below.
  • the present invention was again shown to substantially reduce the total nitrogen and protein content in the smoking material. Neither the Savinase* nor the alkali treated tobacco lowered the nitrogen and protein content of the smoking material near the 86% and 88% reductions as obtained in this example having 15% tobacco fiber.
  • Burley tobacco was processed in accordance with the procedures in Example 1 to obtain a washed burley control, Savinase* treated, and alkali treated tobacco sheets.
  • the WEL was treated with an adsorbent having bentonite and carbon, to remove nitrogenous compounds, and the treated WEL was added back to the tobacco sheets.
  • the burley tobacco containing sheets were processed in accordance with the present invention where a finished sheet was produced having 50% tobacco (15% tobacco fiber + 35% concentrated extract). These finished sheets were analyzed for Hoffmann ayalytes and the results are as shown below.
  • the present invention was again shown to substantially reduce the total nitrogen and protein content in the smoking material. Neither the Savinase* nor the alkali treated tobacco lowered the nitrogen and protein content of the smoking material near the 71 % and 87% reductions as obtained in this example having 50% tobacco.
  • a mixture of tobacco having flue and burley tobacco in a ratio of about one to one was processed in accordance with the procedures in Example 3 to obtain a washed burley control, Savinase* treated, and alkali treated tobacco sheets.
  • the flue/burley tobacco containing sheets were processed in accordance with the present invention where a finished sheet was produced having 65% and 45% tobacco. These finished sheets were analyzed for Hoffmann ayalytes and the results are as shown below.
  • the process of the present invention substantially reduced the total nitrogen and protein content in the smoking material. Neither the Savinase* nor the alkali treated tobacco lowered the nitrogen and protein content of the smoking material near the 77% and 75% reductions as obtained in this example having 45% tobacco.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Indole Compounds (AREA)

Claims (24)

  1. Procédé de fabrication d'un matériau à fumer avec des niveaux réduits de composés azotés comprenant les étapes consistant à :
    (a) mettre en contact un matériau de tabac avec un solvant aqueux pour obtenir un extrait de tabac aqueux et une portion de fibre de tabac ;
    (b) séparer ledit extrait de tabac aqueux de ladite portion de fibre de tabac ;
    (c) raffiner ladite portion de fibre de tabac formant un matériau de tabac raffiné ;
    (d) digérer ledit matériau de tabac raffiné ; et
    (e) mélanger ledit matériau de tabac raffiné avec un matériau contenant de la cellulose.
  2. Procédé selon la revendication 1, dans lequel ladite étape consistant à digérer ledit matériau de tabac raffiné comprend l'étape consistant à mettre ledit matériau de tabac raffiné en contact avec une solution contenant environ 1,25 % à 12,0 % d'hydroxyde de sodium.
  3. Procédé selon la revendication 2, dans lequel ledit matériau de tabac raffiné et ladite solution d'hydroxyde de sodium sont mis en contact selon un rapport d'environ 1 partie de matériau de tabac raffiné pour chaque partie de solution d'hydroxyde de sodium.
  4. Procédé selon la revendication 3, dans lequel ladite étape consistant à digérer ledit matériau de tabac raffiné est à une température allant d'environ 77° C (170° F) à 88° C (190° F) pendant environ 30 mn à 4 heures.
  5. Procédé selon la revendication 1, dans lequel ladite étape consistant à digérer ledit matériau de tabac raffiné comprend l'étape consistant à mettre ledit matériau de tabac raffiné en contact avec une solution contenant environ 1,25 % à 12,0 % d'hydroxyde de potassium.
  6. Procédé selon la revendication 5, dans lequel ledit matériau de tabac raffiné et ladite solution d'hydroxyde de potassium sont mis en contact selon un rapport d'environ 1 partie de matériau de tabac raffiné pour chaque partie de solution d'hydroxyde de potassium.
  7. Procédé selon la revendication 6, dans lequel ladite étape consistant à digérer ladite portion de fibre de tabac raffiné est à une température allant de 77° C (170° F) à 88° C (190° F) pendant environ 30 mn à 4 heures.
  8. Procédé selon la revendication 1, dans lequel ladite étape consistant à digérer ladite portion de fibre de tabac raffiné comprend l'étape consistant à stériliser en autoclave ladite portion de fibre de tabac raffiné à une température d'environ 120° C et à une pression d'environ 1,17 bar à 1,86 bar (17 à 27 psig) pendant environ 15 à 30 minutes.
  9. Procédé selon la revendication 1, comprenant en outre les étapes consistant à :
    (f) mélanger ledit matériau de tabac raffiné et ledit matériau contenant de la cellulose avec un matériau inerte.
  10. Procédé selon la revendication 9, dans lequel ledit matériau inerte est sélectionné parmi le groupe constitué de CaCO3, MgO, MgCO3, chitosane, liposan, et des combinaisons de ceux-ci.
  11. Procédé selon la revendication 9, dans lequel ledit matériau inerte comprend jusqu'à environ 20 % dudit matériau à fumer.
  12. Procédé selon la revendication 1, dans lequel ledit matériau à fumer contient jusqu'à 70 % de tabac.
  13. Procédé selon la revendication 1, dans lequel ledit matériau contenant de la cellulose est sélectionné parmi le groupe constitué de pâte de bois, de pâte de bois blanchie, de lin, de tout matériau cellulosique de plante, et de combinaisons de ceux-ci.
  14. Procédé selon la revendication 1, comprenant en outre l'étape consistant à :
    (f) transformer ledit matériau de tabac raffiné et ledit matériau contenant de la cellulose en une feuille de tabac reconstitué.
  15. Procédé selon la revendication 1, comprenant en outre l'étape consistant à :
    (f) mettre en contact ledit matériau de tabac raffiné et ledit matériau contenant de la cellulose après ladite étape consistant à mélanger avec une portion sélectionnée dudit extrait de tabac.
  16. Procédé de fabrication d'un matériau contenant du tabac avec des niveaux réduits de composés azotés comprenant les étapes consistant à :
    (a) mettre un matériau de tabac en contact avec un premier solvant aqueux pour fournir un extrait de tabac aqueux et une portion de fibre de tabac ;
    (b) séparer ledit extrait de tabac aqueux de ladite portion de fibre de tabac ;
    (c) raffiner ladite portion de fibre de tabac ;
    (d) à une température d'environ 77° C (170° F) à 88° C (190° F), mettre ladite portion de fibre de tabac en contact avec une solution contenant un composé sélectionné parmi le groupe constitué d'hydroxyde de sodium et d'hydroxyde de potassium, dans lequel ladite solution contient ledit composé dans une concentration d'environ 1,25 % à 12 % (poids/volume) de ladite solution ;
    (e) séparer ladite solution de ladite portion de fibre de tabac ; et
    (f) mélanger ladite portion de fibre de tabac avec des fibres de cellulose.
  17. Procédé selon la revendication 16, comprenant en outre l'étape consistant à :
    (g) mettre ladite portion de fibre de tabac en contact avec une portion dudit extrait de tabac aqueux.
  18. Procédé selon la revendication 16, comprenant en outre les étapes consistant à :
    (g) traiter une portion dudit extrait de tabac aqueux avec un adsorbant ; et
    (h) mettre ladite portion de fibre de tabac en contact avec une portion dudit extrait de tabac aqueux traité.
  19. Procédé selon la revendication 16, comprenant en outre l'étape consistant à :
    (g) mélanger ladite portion de fibre de tabac et lesdites fibres de cellulose avec un matériau inerte.
  20. Procédé selon la revendication 19, dans lequel ledit matériau inerte est sélectionné parmi le groupe constitué de CaCO3, MgO, MgCO3, chitosane, liposan, et des combinaisons de ceux-ci.
  21. Procédé selon la revendication 19, dans lequel ledit matériau inerte comprend jusqu'à environ 20 % dudit matériau contenant du tabac.
  22. Procédé selon la revendication 16, dans lequel ledit matériau contenant du tabac contient jusqu'à 70 % de tabac.
  23. Procédé selon la revendication 16, comprenant en outre les étapes consistant à :
    (g) mélanger ladite portion de fibre de tabac avec lesdites fibres de cellulose avec un produit liant ;
    (h) mélanger ladite portion de fibre de tabac, les fibres de cellulose, et le produit liant avec un produit humectant ; et
    (i) fabriquer des feuilles par l'intermédiaire d'un processus en bande.
  24. Procédé selon la revendication 16, comprenant en outre l'étape consistant à :
    (g) fabriquer des feuilles par l'intermédiaire d'un processus de fabrication de papier.
EP05739814A 2004-05-27 2005-04-27 Tripe de tabac a faible teneur en azote Active EP1750529B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/855,925 US20050263161A1 (en) 2004-05-27 2004-05-27 Tobacco filler of low nitrogen content
PCT/US2005/014477 WO2005117619A1 (fr) 2004-05-27 2005-04-27 Tripe de tabac a faible teneur en azote

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EP1750529A1 EP1750529A1 (fr) 2007-02-14
EP1750529B1 true EP1750529B1 (fr) 2012-08-29

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US (1) US20050263161A1 (fr)
EP (1) EP1750529B1 (fr)
AR (1) AR049507A1 (fr)
BR (1) BRPI0511528B1 (fr)
CA (1) CA2566712C (fr)
WO (1) WO2005117619A1 (fr)

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EP2617299A1 (fr) * 2012-01-18 2013-07-24 Delfortgroup AG Papier rempli de particules de tabac
CN103211287B (zh) * 2012-09-27 2014-11-12 湖北中烟工业有限责任公司 一种降低造纸法再造烟叶木浆纤维用量的方法
US9220296B2 (en) 2013-03-15 2015-12-29 Safall Fall Method of reducing tobacco-specific nitrosamines
CN103315378B (zh) * 2013-06-28 2015-06-17 湖北中烟工业有限责任公司 提高造纸法再造烟叶抗张强度和感官品质的方法
WO2016067226A1 (fr) * 2014-10-29 2016-05-06 Recon Inc. Tabac reconstitué par nano-stratification
US10765143B2 (en) 2017-09-14 2020-09-08 Altria Client Services Llc Smoking article with reduced tobacco
CN108776464B (zh) * 2018-06-08 2020-09-08 湖北中烟工业有限责任公司 一种再造烟叶生产过程浆液匹配的控制方法
WO2020239621A1 (fr) * 2019-05-24 2020-12-03 Jt International Sa Amélioration de traitement de tabac reconstitué
WO2023012303A1 (fr) * 2021-08-04 2023-02-09 Nicoventures Trading Limited Matériau de génération d'aérosol comprenant du chitosane et un liant supplémentaire

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Publication number Publication date
EP1750529A1 (fr) 2007-02-14
US20050263161A1 (en) 2005-12-01
CA2566712C (fr) 2009-11-03
BRPI0511528A (pt) 2008-01-02
CA2566712A1 (fr) 2005-12-15
BRPI0511528B1 (pt) 2016-05-31
AR049507A1 (es) 2006-08-09
WO2005117619A1 (fr) 2005-12-15

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