EP3662765B1 - Tobacco material - Google Patents
Tobacco material Download PDFInfo
- Publication number
- EP3662765B1 EP3662765B1 EP17924586.5A EP17924586A EP3662765B1 EP 3662765 B1 EP3662765 B1 EP 3662765B1 EP 17924586 A EP17924586 A EP 17924586A EP 3662765 B1 EP3662765 B1 EP 3662765B1
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- EP
- European Patent Office
- Prior art keywords
- tobacco
- particles
- dispersion medium
- tobacco material
- material according
- 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.)
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- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims description 163
- 239000000463 material Substances 0.000 title claims description 80
- 244000061176 Nicotiana tabacum Species 0.000 title description 8
- 241000208125 Nicotiana Species 0.000 claims description 155
- 239000002245 particle Substances 0.000 claims description 72
- 239000002612 dispersion medium Substances 0.000 claims description 25
- 239000002994 raw material Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229920002488 Hemicellulose Polymers 0.000 claims description 16
- 150000005846 sugar alcohols Chemical class 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 10
- 150000002894 organic compounds Chemical class 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 235000019505 tobacco product Nutrition 0.000 claims description 7
- 150000001298 alcohols Chemical class 0.000 claims description 6
- 235000000346 sugar Nutrition 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 150000008163 sugars Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000796 flavoring agent Substances 0.000 description 9
- 235000019634 flavors Nutrition 0.000 description 9
- 238000000227 grinding Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 9
- 230000000391 smoking effect Effects 0.000 description 9
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- 239000000654 additive Substances 0.000 description 7
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
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- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 description 2
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- -1 aliphatic alcohols Chemical class 0.000 description 2
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- 235000013305 food Nutrition 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VQHSOMBJVWLPSR-WUJBLJFYSA-N maltitol Chemical compound OC[C@H](O)[C@@H](O)[C@@H]([C@H](O)CO)O[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O VQHSOMBJVWLPSR-WUJBLJFYSA-N 0.000 description 2
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- HDTRYLNUVZCQOY-UHFFFAOYSA-N α-D-glucopyranosyl-α-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OC1C(O)C(O)C(O)C(CO)O1 HDTRYLNUVZCQOY-UHFFFAOYSA-N 0.000 description 1
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 1
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 240000007154 Coffea arabica Species 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 1
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 1
- 240000002943 Elettaria cardamomum Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004386 Erythritol Substances 0.000 description 1
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 1
- 229930091371 Fructose Natural products 0.000 description 1
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 description 1
- 239000005715 Fructose Substances 0.000 description 1
- 229920001503 Glucan Polymers 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 1
- 244000024873 Mentha crispa Species 0.000 description 1
- 235000014749 Mentha crispa Nutrition 0.000 description 1
- 244000246386 Mentha pulegium Species 0.000 description 1
- 235000016257 Mentha pulegium Nutrition 0.000 description 1
- 235000004357 Mentha x piperita Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 244000299461 Theobroma cacao Species 0.000 description 1
- 235000009470 Theobroma cacao Nutrition 0.000 description 1
- HDTRYLNUVZCQOY-WSWWMNSNSA-N Trehalose Natural products O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-WSWWMNSNSA-N 0.000 description 1
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 description 1
- PYMYPHUHKUWMLA-WDCZJNDASA-N arabinose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WDCZJNDASA-N 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 235000005300 cardamomo Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000016213 coffee Nutrition 0.000 description 1
- 235000013353 coffee beverage Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
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- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
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- 229940009714 erythritol Drugs 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
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- 235000012041 food component Nutrition 0.000 description 1
- 239000005417 food ingredient Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 235000019534 high fructose corn syrup Nutrition 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 235000001050 hortel pimenta Nutrition 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000832 lactitol Substances 0.000 description 1
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- VQHSOMBJVWLPSR-JVCRWLNRSA-N lactitol Chemical compound OC[C@H](O)[C@@H](O)[C@@H]([C@H](O)CO)O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O VQHSOMBJVWLPSR-JVCRWLNRSA-N 0.000 description 1
- 229960003451 lactitol Drugs 0.000 description 1
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- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
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- 239000002904 solvent Substances 0.000 description 1
- 229940100515 sorbitan Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
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- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000013616 tea Nutrition 0.000 description 1
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- 239000000811 xylitol Substances 0.000 description 1
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- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 229960003487 xylose Drugs 0.000 description 1
Images
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
- A24B15/24—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
- A24B15/18—Treatment of tobacco products or tobacco substitutes
-
- 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
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Manufacture Of Tobacco Products (AREA)
Description
- The present invention relates to a tobacco material and a tobacco product comprising the tobacco material.
- In the field of smoking articles, smoking articles that meet various preferences are developed by adjusting smoking flavor. As a method of adjusting smoking flavor, a method of dispersing leaf tobacco particles in a dispersion medium and adding the resulting dispersion to tobacco shreds is known as in Patent Literature (PTL) 1, for example. Moreover,
PTL 2 discloses a method of improving flavor through heating of a suspension of tobacco particles by utilizing the Maillard reaction or the like (PTL 2, paragraph [0013]). Such tobacco particles are smaller than 40 mesh (PTL 2, paragraph [0024]), in other words, smaller than 400 µm. Meanwhile, a suspension of tobacco particles is also known as a raw material for a reconstituted tobacco sheet, andPTL 3 discloses that a suspension of tobacco particles with 60 to 400 mesh is heated to 80°F to 180°F (26.7°C to 82.2°C) (PTL 3, paragraph [0056]). The particle size of these tobacco particles is 38 to 250 µm. -
- PTL 1:
WO 2014/185103 - PTL 2:
Japanese Unexamined Patent Application Publication No. H10-66559 - PTL 3:
Japanese Unexamined Patent Application Publication No. H06-46817 - The method of
PTL 1 is a useful technique since flavor can be evenly imparted to tobacco shreds and the like. However, in the preparation stage for a tobacco raw material dispersion by mixing a tobacco raw material with solvent, such as water, present inventors found a problem, for example, in which interactions and the like between water and watersoluble components derived from the tobacco raw material increase the viscosity of the dispersion, thereby making spraying of the dispersion difficult. In view of the above, an object of the present invention is to provide a low-viscosity tobacco material in which tobacco particles are dispersed in an aqueous dispersion medium.PTL 1 suggests nothing about an increase in viscosity, andPTL - The present inventors have resolved the above-mentioned problem by controlling the amount of hemicellulose to a certain value or less in a tobacco material comprising an aqueous dispersion medium and tobacco particles that are dispersed in the dispersion medium and have an average particle size of 30 µm or less. The invention is set out in the appended set of claims.
- According to the present invention, it is possible to provide a low-viscosity tobacco material in which tobacco particles are dispersed in an aqueous dispersion medium.
-
-
Fig. 1A shows the viscosity of tobacco materials. -
Fig. 1B shows the viscosity of tobacco materials. -
Fig. 1C shows the viscosity of tobacco materials. -
Fig. 2 shows the results of a storage test. -
Fig. 3 shows the pH of tobacco materials. - Hereinafter, the present invention will be described in detail. In the present invention, the wording "X to Y" includes the lower and the upper limits of X and Y.
- A tobacco material of the present invention comprises an aqueous dispersion medium and tobacco particles that are dispersed in the dispersion medium and have an average particle size of 30 µm or less.
- Tobacco particles may be derived from a tobacco raw material, a fermented tobacco raw material, or a heat-treated tobacco raw material. The tobacco raw material herein means whole tobacco or parts of tobacco. As such parts, leaves, veins, stems, roots, flowers, and mixtures thereof may be used. The variety of tobacco is not particularly limited, and examples include flue-cured, barley, domestic, and oriental. A tobacco raw material to be used may be in the state of fresh leaves immediately after the harvest without being subjected to drying or the like, leaves that have been subjected to drying treatment after the harvest, or combinations thereof. In addition, tobacco stems and veins, expanded tobacco, and sheet tobacco obtained by processing these tobacco raw materials may also be used. These materials may be used alone or in combination of a plurality of varieties or parts.
- Tobacco particles can be prepared by any suitable method but is preferably prepared by subjecting a tobacco raw material to common drying treatment, then coarse grinding with a common coarse grinder, followed by fine grinding. The drying treatment and coarse grinding may be performed in any publicly known manner, and the average particle size of coarsely ground tobacco particles preferably falls within a range from several hundred micrometers to several millimeters. A method for fine grinding is also not limited, and either method of wet grinding and dry grinding may be employed. The wet grinding can be performed by adding a liquid dispersion medium to coarsely ground tobacco particles, mixing, and processing the resulting mixture in a wet milling machine (MIC-2: from Nara Machinery Co., Ltd., for example). The milling machine is preferably set to the rotation number of typical 1,100 to 1,300 rpm and milling time of about 5 to 100 minutes. Meanwhile, dry grinding can be performed by processing coarsely ground tobacco particles in a dry fine grinder, such as a jet mill.
- The thus-obtained tobacco particles have an average particle size of 30 µm or less and preferably 20 µm or less. By having such average particle sizes, clogging of a nozzle is less likely to occur during spraying of a dispersion; and tobacco particles are readily and uniformly dispersed in the tobacco material. Accordingly, smoking flavor can be evenly imparted to smoking articles. The lower limit of the average particle size of tobacco particles is 5 µm or more in one embodiment and 8 µm or more in another embodiment. The average particle size of tobacco particles is adjustable by grinding conditions. For example, the average particle size can be increased by shortening the time for fine grinding, reducing the viscosity of a dispersion medium, and so forth.
- The average particle size of the present invention can be determined by a laser diffraction/scattering method. Specifically, the average particle size of the present invention is measured by using a laser diffraction particle size analyzer (SALD-2100 nano particle size analyzer from Shimadzu Corporation) at a diffractive index of 1.60 to 0.101.
- An aqueous dispersion medium herein refers to a liquid medium containing water. The aqueous dispersion medium may be water alone or may contain a specific organic compound. The organic compound is preferably water soluble, and such an aqueous organic compound is preferably selected from the group consisting of monohydric alcohols, polyhydric alcohols, sugar alcohols, sugars, polyhydric alcohol esters, and combinations thereof. When the organic compound is insoluble in water, the organic compound can be dissolved in an aqueous dispersion medium by using in combination with an amphiphilic organic compound, such as methanol.
- Examples of the monohydric alcohols include monohydric C1 to C6 aliphatic alcohols, such as methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 2,2-dimethylethanol, and cyclohexanol; monohydric alcohols having an aromatic substituent, such as benzyl alcohol; other monohydric alcohols having one or more halogen elements; and monohydric alcohols having one or more ether linkages.
- A polyhydric alcohol is a generic term for compounds having two or more hydroxy groups in a molecule. Examples of the polyhydric alcohols include, but are not limited to, glycerol and propylene glycol.
- Examples of the sugar alcohols include sorbitol, maltitol, xylitol, erythritol, lactitol, sorbitan, xylose, arabinose, mannose, and trehalose.
- Examples of the sugars include lactose, table sugar, coupling sugar, glucose, enzyme-converted syrup, acid-converted syrup, maltose syrup, maltose, high-fructose corn syrup, fructose, hydrogenated maltose, hydrogenated starch syrup, and honey.
- Examples of the polyhydric alcohol esters include fatty acid polyhydric alcohol esters, such as fatty acid triglycerides.
- The aqueous dispersion medium can be used as a medium for wet grinding of tobacco. In this case, a tobacco material of the present invention can be prepared simultaneously with fine grinding. On this occasion, a mixed solvent of water and glycerol is preferably employed since the average particle size of tobacco particles is readily adjusted to a desirable range. When tobacco particles are obtained by dry fine grinding, a tobacco material of the present invention can be prepared by mixing finely ground tobacco particles with an aqueous medium.
- A mixing ratio of water and the organic compound is not limited, and any suitable mixing ratio may be employed particularly when a mixed solvent of water and glycerol is used. However, in view of handling properties, safety, and the like, a water content in the aqueous dispersion medium is preferably more than 50% by weight, more preferably 80% by weight or more, and further preferably 90% by weight or more.
- Hemicellulose is a polysaccharide contained in plant cell walls. A tobacco material of the present invention contains 0.8% by weight or less of hemicellulose based on bone-dry tobacco particles. Hemicellulose readily interacts with water, thereby increasing the viscosity of the tobacco material. However, the present invention exhibits a low viscosity due to a reduced amount of hemicellulose and thus exerts an effect of facilitating spraying onto a base material, such as tobacco shreds. In this view, the amount of hemicellulose is preferably 0.5% by weight or less based on bone-dry tobacco particles. The lower limit of the amount of hemicellulose is not limited but is preferably 0% by weight or is preferably 0.1% by weight or more.
- The concentration of cellulose in a tobacco material of the present invention is not limited but, in view of viscosity, is preferably 12% by weight or less, more preferably 10.5% by weight or less, further preferably 10% by weight or less, and particularly preferably 9% by weight or less based on bone-dry tobacco particles.
- In a tobacco material of the present invention, tobacco particles with an average particle size of 30 µm or less are dispersed in an aqueous dispersion medium. The amount of tobacco particles in the tobacco material is preferably 1 to 40% by weight in a bone-dry state. When the amount of tobacco particles falls within this range, a tobacco material of the present invention is a slurry with an appropriate viscosity, is easily applied to a base material by using a spraying apparatus, and makes uniform application possible.
- Moreover, a tobacco material of the present invention has a pH of preferably 4.8 or less and more preferably 4.6 or less. A tobacco material obtained by the method of
PTL 1 had a problem in which microorganisms proliferate due to increased water activity. Meanwhile, a tobacco material of the present invention with the above-mentioned pH ranges is also characterized by suppressed proliferation of microorganisms and capability of maintaining the quality. The pH of a tobacco material can be determined by measuring a hydrogen ion concentration in the tobacco material by using a pH meter. - The viscosity of a tobacco material of the present invention at 20°C and a tobacco particle concentration of 16.7% by weight is preferably 10 to 500 cP and more preferably 10 to 200 cP. The viscosity is measured with a B-type viscometer.
- A tobacco material of the present invention may contain various additives. Examples of the additives include food ingredients for designing flavor, such as spearmint leaves, peppermint leaves, green tea and other tea leaves, coffee, cocoa, cardamom, menthol, and sugar; polysaccharide thickeners for enhancing dispersibility through viscosity adjustment, such as glucans and pectin; food additives, such as various emulsifiers; glues, such as carboxymethyl cellulose (CMC); and curing agents for enhancing handling properties after addition to tobacco. The timing of adding such additives is not limited, and additives may be added before fine grinding of a tobacco raw material and finely ground together or may be added to a tobacco material. The proportions of additives may also be set suitably. However, when additives are contained, the total amount of tobacco particles and a dispersion medium in a tobacco material of the present invention is preferably 90% by weight or more and more preferably 95% by weight or more based on the total amount of the tobacco material.
- A tobacco material of the present invention is preferably produced by a method comprising: preparing a dispersion containing an aqueous dispersion medium and tobacco particles that are dispersed in the dispersion medium and have an average particle size of 30 µm or less, as in the foregoing; and heating the dispersion to 160°C or higher. By heating the dispersion to 160°C or higher, it is possible to decompose substances, such as hemicellulose, that cause thickening through interactions with water and to reduce the amounts thereof. In this view, the heating temperature is preferably higher than 150°C and more preferably 160°C or higher. Meanwhile, an excessively high temperature causes degradation of active components. Accordingly, the upper limit of the heating temperature is preferably 200°C or lower, more preferably 190°C or lower, and further preferably 180°C or lower. Heating is preferably performed under pressure by using an apparatus, such as a pressure cooker. The pressure is preferably 1.8 MPa or higher. A tobacco material of the present invention produced under these conditions also exerts an effect of remarkably suppressing proliferation of microorganisms.
- A tobacco product can be obtained by adding a tobacco material of the present invention to a base material. A base material herein refers to a tobacco body or auxiliary members of smokable tobacco. Examples of the tobacco body include tobacco immediately after the harvest, dried tobacco, flavor-added tobacco, tobacco shreds, and cigarettes. Examples of the auxiliary members include cigarette paper, filters, and tipping paper. Examples of the method of adding a tobacco material to a base material include, but are not particularly limited to, dropwise addition, spraying, coating, and impregnation.
- When a tobacco material of the present invention is added to a cigarette, the tobacco material may be added to cigarette components, such as tobacco shreds, cigarette paper, filter, and tipping paper. The tobacco material may be added to one segment or two or more segments, such as both tobacco shreds and tipping paper. Moreover, by adding tobacco materials obtained from different types of tobacco to different locations on cigarette paper, it is also possible to provide different smoking flavors during smoking of a tobacco product, such as a cigarette. When a tobacco material is added to a filter of a cigarette, the filter may also be impregnated with the tobacco material.
- When a tobacco material of the present invention is added to tobacco shreds, the amount of tobacco particles contained in the tobacco material is preferably set to 0.01 to 5% by weight based on the weight of the tobacco shreds in view of efficiency in imparting smoking flavor. When tobacco with strong flavor is used for a tobacco material, the above-mentioned proportion may be reduced to 0.01 to 0.1% by weight, for example.
- Tobacco particles with an average particle size of 30 µm were prepared as in the following by using a leaf tobacco raw material (Brazilian flue-cured raw material).
- The leaf tobacco raw material was coarsely ground to 10 mm or less by using a cutter mill from Tokyo Atomizer M. F. G. Co., Ltd. Subsequently, the coarsely ground leaf tobacco raw material was coarsely ground further to an average particle size of 100 µm or less by using a CONDUX impact mill from NETZSCH Group and then finely ground by using a CSM impact classifier mill from NETZSCH Group to yield tobacco particles with an average particle size of 30 µm or less.
- The resulting tobacco particles were mixed with sterile water to obtain a slurry in which the tobacco particles were suspended in water. The content of the tobacco particles (bone dry) in the slurry was 16.7% by weight. The slurry was sealed in four reaction vessels and subjected to high-temperature high-pressure treatment under the following respective conditions to produce tobacco materials of the present invention. The suspended state of the tobacco particles did not change even after the high-temperature high-pressure treatment.
- A: 160°C-10 min
- B: 180°C-10 min
- C: 180°C-30 min
- D: 180°C-60 min
- The viscosity of each slurry after the treatment was measured at 20°C by using a B-type viscometer (rotor No. 1, rotation number of 0.3 to 100 rpm).
- Further, cellulose and hemicellulose contents were measured for the tobacco materials (slurries) of the present invention as in the following.
- 1) A slurry was washed with water and subjected to centrifugation (8,000 rpm, 10 min) to collect a settled residue. This procedure was repeated twice.
- 2) The collected residue was rinsed with ethanol and subjected to centrifugation (8,000 rpm, 10 min) to collect a settled residue. This procedure was repeated twice.
- 3) The resulting residue was dried in a constant-temperature apparatus (100°C-2 hrs).
- 4) The dried residue was weighed, and quantification of cellulose and hemicellulose by the Van Soest method was outsourced to Japan Food Research Laboratories to obtain cellulose and hemicellulose contents based on the weight of bone-dry tobacco particles.
- A tobacco material of the present invention was produced and evaluated in the same manner as Example 1 except for changing the content of tobacco particles (bone dry) to 14.3% by weight and performing only high-temperature high-pressure treatment D above.
- A tobacco material of the present invention was produced and evaluated in the same manner as Example 1 except for changing the content of tobacco particles (bone dry) to 20.0% by weight and performing only high-temperature high-pressure treatment D above.
- A tobacco material for comparison was produced and evaluated in the same manner as Example 1 except for changing the high-temperature high-pressure treatment to the following.
- X: None
- Y: 150°C -5 min
- Z: 150°C-15 min
- Tobacco materials for comparison were produced and evaluated in the same manner as Examples 2 and 3, respectively, except for omitting the high-temperature high-pressure treatment.
- These results are shown in
Figs. 1 and2 as well as Tables 1 and 2. -
Table 1 The amount of hemicellulose for Examples and Comparative Examples (weight %) Ex. 1 Ex. 2 Ex. 3 Comp. Ex. 1 Comp. Ex. 2 Comp. Ex. 3 A 160°C-10 min 0.0 - - - - - B 180°C-10 min 0.0 - - - - - c 180°C-30 min 0.0 - - - - - D 180°C-60 min 0.0 0.0 0.0 - - - Y 150°C -5 min - - - 1.4 - - Z 150°C-15 min - - - 0.9 - - X None - - - 2.7 2.7 2.7 -
Table 2 The amount of cellulose for Examples and Comparative Examples (weight%) Ex. 1 Ex. 2 Ex. 3 Comp. Ex. 1 Comp. Ex. 2 Comp. Ex. 3 A 160°C-10 min 11.7 - - - - - B 180°C-10 min 8.8 - - - - - C 180°C-30 min 8.6 - - - - - D 180°C-60 min 7.5 7.5 8.8 - - - Y 150°C -5 min - - - 13.5 - - Z 150°C-15 min - - - 10.8 - - X None - - - 12.2 12.2 12.2 - As shown in
Fig. 1 , tobacco materials for comparison treated under conditions Y and Z (hereinafter, referred to as "Comparative Example 1Y" and the like) in Comparative Example 1 tend to have an increased viscosity. This is presumably because a large amount of polysaccharides were extracted into an aqueous medium but were not decomposed by high-temperature high-pressure treatment under such conditions, thereby increasing interactions with water. Meanwhile, the tobacco materials of the present invention, such as Example 1A, are considered to achieve a lower viscosity through extraction of a large amount of polysaccharides and the like including hemicellulose into an aqueous medium, followed by decomposition. As described above, it is clear that the tobacco materials of the present invention with a certain content or less of hemicellulose exhibit a low viscosity. - A hydrogen ion concentration in a slurry was measured by using a pH meter from Mettler Toledo for the tobacco materials of the present invention treated under high-temperature high-pressure conditions A and C in Example 1 [the content of tobacco particles (bone dry): 16.7% by weight]. These tobacco materials were poured into 50 mL vials and subjected to a storage test. The storage test was performed by placing the vials in a constant-temperature room at 35°C. A total viable count was measured for samples obtained immediately after the start of the storage test, after 72 hours, and after 120 hours. The total viable count was measured in accordance with the method posted on the home page of Japan Food Research Laboratories as in the following.
- 1) A sample was diluted with sterile water to prepare serial tenfold diluted samples.
- 2) Each of the samples diluted to the respective concentrations were inoculated on a standard agar medium and cultured at 35°C for two days. After the culture, the number of colonies was counted.
- 3) The initial viable count of the samples was calculated on the basis of differences in the number of colonies appeared for the respective dilutions.
- The tobacco material for comparison that did not undergo high-temperature high-pressure treatment of Comparative Example 1 was subjected to a storage test in the same manner as Example 4.
- These results are shown in
Figs. 2 and3 . As is clear fromFig. 2 , the count increases 100 to 1,000-fold during the storage in the tobacco material of Comparative Example 4 that was not subjected to high-temperature high-pressure treatment, whereas microorganisms did not proliferate even after the storage for 120 hours in the tobacco materials of the present invention.Fig. 3 reveals that slurries have been changed to the environment that suppresses proliferation of microorganisms by the high-temperature high-pressure treatment.
Claims (13)
- A tobacco material comprising an aqueous dispersion medium and tobacco particles that are dispersed in the dispersion medium and have an average particle size of 30 µm or less, wherein
a hemicellulose content in the tobacco material is 0.8% by weight or less based on bone-dry tobacco particles. - The tobacco material according to claim 1, wherein a pH is 4.8 or less.
- The tobacco material according to claim 1, wherein the aqueous dispersion medium contains an aqueous organic compound.
- The tobacco material according to claim 3, wherein the aqueous organic compound is selected from the group consisting of monohydric alcohols, polyhydric alcohols, sugar alcohols, sugars, polyhydric alcohol esters, and combinations thereof.
- The tobacco material according to claim 1, wherein a water content in the aqueous dispersion medium exceeds 50% by weight.
- The tobacco material according to claim 1, wherein a content of the tobacco particles is 1 to 40% by weight.
- The tobacco material according to claim 1, wherein the tobacco particles are particles derived from a tobacco raw material, a fermented tobacco raw material, or a heat-treated tobacco raw material.
- The tobacco material according to claim 7, wherein a variety of the tobacco raw material is flue-cured, burley, domestic, or oriental.
- A production method for the tobacco material according to claim 1 comprising:preparing a dispersion containing an aqueous dispersion medium and tobacco particles that are dispersed in the dispersion medium and have an average particle size of 30 µm or less; andheating the dispersion to 160°C or higher.
- The production method according to claim 9, wherein the heating is performed under pressure.
- A tobacco product comprising the tobacco material according to claim 1.
- The tobacco product according to claim 11, further comprising a base material, wherein 0.01 to 5% by weight of the tobacco particles are contained relative to the base material.
- A production method for the tobacco product according to claim 12 comprising adding the tobacco material according to claim 1 to the base material.
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GB573191A (en) * | 1942-08-13 | 1945-11-09 | American Mach & Foundry | Improvements in or relating to cigars cigarettes and the like |
JPS6167469A (en) * | 1984-09-11 | 1986-04-07 | 日本たばこ産業株式会社 | Production of fragrance for tobacco |
EP0283672B1 (en) * | 1987-02-10 | 1993-09-22 | R.J. Reynolds Tobacco Company | Cigarette |
JP3681410B2 (en) * | 1992-04-09 | 2005-08-10 | フィリップ・モーリス・プロダクツ・インコーポレイテッド | Reconstituted tobacco sheet and method for producing and using the same |
EP0821886A3 (en) | 1996-08-01 | 1998-08-19 | R.J. Reynolds Tobacco Company | Method of providing aromatic compounds from tobacco |
CN101273796B (en) * | 2008-05-07 | 2010-06-02 | 广东省金叶烟草薄片技术开发有限公司 | Composite papermaking method reconstituted tobacco and producing method thereof |
US9167847B2 (en) * | 2009-03-16 | 2015-10-27 | Philip Morris Usa Inc. | Production of coated tobacco particles suitable for usage in a smokeless tobacoo product |
CN102429319B (en) * | 2011-08-26 | 2013-11-27 | 重庆恒远晋通科技有限公司 | Continuous extracting method for tobacco |
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