KR20200044925A - Cigarette material - Google Patents

Abstract

A tobacco material comprising an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium, wherein the hemicellulose content in the tobacco material is 0.8% by weight or less based on the dried tobacco particles. The tobacco material is characterized by low viscosity.

Description

Cigarette material

The present invention relates to tobacco materials and tobacco products comprising the same.

As for smoking articles, it has been practiced to develop smoking articles corresponding to various tastes by adjusting flavor. As a method of adjusting the flavor, for example, in Patent Document 1, a method of dispersing leaf tobacco particles in a dispersion medium and adding a dispersion liquid to the flesh tobacco is known. In addition, Patent Document 2 discloses a method of heating a suspension of tobacco particles to improve a flavor using a Mailliard reaction or the like (Patent Document 2 Paragraph 0013). The tobacco particles are less than 40 mesh (Patent Document 2 Paragraph 0024), that is, less than 400 μm. On the other hand, a suspension of tobacco particles is also known as a raw material for reconstituted tobacco sheets, and Patent Document 3 discloses heating a 60-400 mesh tobacco particle suspension to 80-180 ° F. (26.7-82.2 ° C.) (Patent Document 3). Paragraph 0056). The particle size of the tobacco particles is 38 to 250 μm.

Patent Literature 1: International Publication No. 2014/185103 Patent Document 2: Japanese Patent Publication No. 10-66559 Patent Literature 3: Japanese Patent Publication No. Hei 6-46817

The method of Patent Literature 1 is a useful technique in that it can uniformly impart flavor to a cigarette or the like. However, in the step of preparing a dispersion of tobacco raw materials by mixing a solvent such as tobacco raw material and water, the inventors have difficulty in spraying because the viscosity of the dispersion increases due to interaction of water-soluble components derived from tobacco raw materials and water, etc. I found that there is a problem. In view of the above, it is an object of the present invention to provide a low-viscosity tobacco material in which tobacco particles are dispersed in an aqueous dispersion medium. Concerning the increase in viscosity, Patent Document 1 has no suggestion, and Patent Documents 2 and 3 do not even disclose such particles. Therefore, the said subject is a novel subject discovered by the inventors as a problem peculiar to using fine particles whose average particle diameter is 30 micrometers or less.

The inventors have solved the above problem by setting the amount of hemicellulose to a certain amount or less in a tobacco material comprising an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium. That is, the said subject is solved by the following this invention.

(1) A tobacco material comprising an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium,

A tobacco material having a hemicellulose content in the tobacco material of 0.8% by weight or less based on the dried tobacco particles.

(2) The tobacco material according to (1), wherein the pH is 4.8 or less.

(3) The tobacco material according to (1) or (2), wherein the aqueous dispersion medium contains an aqueous organic compound.

(4) The tobacco material according to (3), wherein the aqueous organic compound is selected from the group consisting of monohydric alcohols, polyhydric alcohols, sugar alcohols, saccharides, polyhydric alcohol esters, and combinations thereof.

(5) The tobacco material according to any one of (1) to (4), wherein the content of water in the aqueous dispersion medium is more than 50% by weight in the aqueous dispersion medium.

(6) The tobacco material according to any one of (1) to (5), wherein the content of the tobacco particles is 1 to 40% by weight.

(7) The tobacco material according to any one of (1) to (6), wherein the tobacco particles are particles derived from a tobacco raw material, a fermented product of a tobacco raw material, or a heat treated product of a tobacco raw material.

(8) The tobacco material according to (7), wherein the tobacco raw material variety is a yellow species, a burley species, a native species, or an orient leaf.

(9) A process for preparing a dispersion liquid comprising an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium, and

Comprising the step of heating the dispersion to 160 ℃ or more,

The manufacturing method of the tobacco material in any one of (1)-(8).

(10) The production method according to (9), wherein the heating is performed under pressure.

(11) A tobacco product comprising the tobacco material according to any one of (1) to (8) above.

(12) The tobacco product according to (11), further comprising a substrate and containing 0.01 to 5% by weight of the tobacco particles relative to the substrate.

(13) The method for producing a tobacco product according to (12), comprising the step of adding the tobacco material according to any one of (1) to (8) to the substrate.

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.

Figure 1a is a view showing the viscosity of the tobacco material
Figure 1b is a view showing the viscosity of the tobacco material
Figure 1c is a view showing the viscosity of the tobacco material
2 is a view showing the results of the device test
3 is a view showing the pH of the tobacco material

Hereinafter, the present invention will be described in detail. In the present invention, "X to Y" includes end values X and Y.

1. Tobacco material

The tobacco material of the present invention contains an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium.

(1) cigarette particles

The tobacco particles may be derived from tobacco raw materials, fermented products of tobacco raw materials, or heat treated products of tobacco raw materials. The tobacco raw material is the entire tobacco or the site of tobacco, and as the site, leaves, leaf veins, stems, roots, flowers, and mixtures thereof can be used. Cigarette varieties are not particularly limited, and include yellow species, burly species, native species, and orient leaves. The state of the tobacco raw material to be used may be raw leaves that have not been dried immediately after harvesting, or may be dried after harvesting, or may be used in combination. In addition, it is also possible to use middle tobacco, puffed tobacco, and sheet tobacco obtained by treating these tobacco raw materials. These may be used alone or in combination of a plurality of types of varieties or parts.

Tobacco particles can be prepared by any method, but it is preferred that the tobacco raw material is subjected to a normal drying treatment, then coarsely pulverized with a conventional coarse crusher, and then finely pulverized. The drying treatment or coarse pulverization may be performed as is known, and the average particle diameter of coarse pulverized tobacco particles is preferably in the range of several hundreds of μm to several mm. The fine grinding method is not limited, either wet grinding or dry grinding may be used. Wet grinding can be carried out by adding a liquid dispersion medium to the coarsely crushed tobacco particles and mixing, and then treating the mixture with a wet pulverizer (for example, MIC-2: manufactured by Nara Machinery Co., Ltd.). The rotation speed is usually 1100 to 1300 rpm, and the grinding time is preferably about 5 to 100 minutes. In addition, dry grinding can be performed by treating the coarsely pulverized tobacco particles with a dry fine grinding machine such as a jet mill.

The average particle diameter of the thus obtained tobacco particles is 30 μm or less, preferably 20 μm or less. By having such an average particle diameter, nozzle clogging is less likely to occur when spraying a dispersion liquid, and it is easy to uniformly disperse the tobacco particles in the tobacco material, and uniformly giving flavor to a smoking article You can. In one embodiment, the lower limit of the average particle diameter of the tobacco particles is 5 μm or more, and in another embodiment, 8 μm or more. The average particle size of the tobacco particles can be adjusted by crushing conditions, and the average particle size can be increased, for example, by shortening the pulverization time, making the dispersion medium low viscosity, and the like.

The average particle diameter in the present invention is determined by a laser diffraction scattering method. Specifically, the average particle diameter in the present invention is measured using a laser diffraction particle size distribution measuring device (for example, Shimadzu nano particle size distribution measuring device SALD-2100) with a refractive index of 1.60 to 0.101.

(2) aqueous dispersion medium

An aqueous dispersion medium is 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 the aqueous organic compound is preferably selected from the group consisting of monohydric alcohols, polyhydric alcohols, sugar alcohols, saccharides, polyhydric alcohol esters, and combinations thereof. When the organic compound is non-aqueous, it can be dissolved in an aqueous dispersion medium by using in combination with an amphiphilic organic compound such as methanol.

As monohydric alcohol, monovalent C1 ~ such as methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 2,2-dimethylethanol, cyclohexanol, etc. And monohydric alcohols having aromatic substituents such as C6 aliphatic alcohols and benzyl alcohol, and other monohydric alcohols containing one or more halogen elements, monohydric alcohols having one or more ether bonds, and the like.

Polyhydric alcohol is a generic term for a compound having two or more hydroxyl groups in one molecule, and is not limited, and examples thereof include glycerin and propylene glycol.

Examples of sugar alcohols include sorbitol, multitol, xylitol, erythritol, lactitol, sorbitan, xylose, arabinose, mannose, trehalose, and the like.

Examples of sugars include lactose, sugar, coupling sugar, glucose, enzyme starch syrup, acid saccharification starch syrup, maltose starch syrup, maltose sugar, isomerized sugar, fructose, reduced maltose, reduced starch starch syrup, and sealing.

Examples of the polyhydric alcohol ester 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, the tobacco material of the present invention can be prepared together with fine grinding. At this time, the use of a mixed solvent of water and glycerin is preferable because it is easy to adjust the average particle diameter of the tobacco particles to a desired range. When the tobacco particles are obtained by dry fine grinding, the tobacco material of the present invention can be prepared by mixing the finely ground tobacco particles with an aqueous medium.

The mixing ratio of water and the organic compound is not limited, and in particular, when using a mixed solvent of water and glycerin, the mixing ratio may be arbitrary. However, from the viewpoint of workability, safety, and the like, the content of water in the aqueous dispersion medium is preferably more than 50% by weight, more preferably 80% by weight or more, and even more preferably 90% by weight or more.

(3) Hemicellulose

Hemicellulose is a polysaccharide contained in plant cell walls. The tobacco material of the present invention contains up to 0.8% by weight of hemicellulose based on the dried tobacco particles. Hemicellulose is easy to interact with water, and thus increases the viscosity of the tobacco material. However, in the present invention, since the amount of hemicellulose is reduced, the viscosity is low and exhibits an effect of being easily sprayed onto a substrate such as flesh tobacco. From this viewpoint, the amount of hemicellulose is preferably 0.5% by weight or less based on the dried tobacco particles. The lower limit of the amount of hemicellulose is not limited, but is preferably 0% by weight, or preferably 0.1% by weight or more.

The cellulose concentration in the tobacco material of the present invention is not limited, but from the viewpoint of viscosity, 12% by weight or less is preferred, more preferably 10.5% by weight or less, more preferably 10% by weight or less, based on the dried tobacco particles. , 9% by weight or less is particularly preferred.

(4) Characteristics

In the tobacco material of the present invention, tobacco particles having an average particle diameter 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 the dry state. When the amount of the tobacco particles is within this range, the tobacco material of the present invention becomes a slurry having a suitable viscosity, and it is easy to apply to the substrate using a spray or the like, and uniform coating is possible.

Further, the pH of the tobacco material of the present invention is preferably 4.8 or less, more preferably 4.6 or less. Tobacco material obtained by the method of patent document 1 has a problem that microorganisms proliferate due to an increase in water activity, but the tobacco material of the present invention having a pH in this range is also difficult to propagate microorganisms, and also has a characteristic of maintaining quality. The pH of the tobacco material is determined by measuring the hydrogen ion concentration in the tobacco material using a pH meter.

The viscosity of the tobacco material of the present invention, when the concentration of the tobacco particles is 16.7% by weight, is preferably 10 to 500 cp at 20 ° C, more preferably 10 to 200 cp. Viscosity is measured by a B-type viscometer.

(5) Additive

The tobacco material of the present invention may contain various additives. As additives, for example, spearmint leaves, peppermint leaves, green tea leaves for flavor design, coffee materials such as coffee, cocoa, cardamom, menthol, sugar, etc., to improve dispersibility by adjusting viscosity And food additives such as thick polysaccharides such as glucan and pectin, various emulsifiers, sizing agents such as sodium carboxymethylcellulose (CMC), and curing agents for improving handling after adding to tobacco. . The timing of adding the additive is not limited, and the tobacco raw materials may be added before being pulverized, or may be pulverized together or added to the tobacco material. The ratio of the additive may be arbitrary, but when the additive is included, the total amount of the tobacco particles and the dispersion medium in the tobacco material of the present invention is preferably 90% by weight or more of the total amount of the tobacco material, and 95% by weight It is more preferable that it is the above.

2. Method for manufacturing tobacco material of the present invention

Tobacco material of the present invention, as described above, a method comprising a step of preparing a dispersion containing an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium, and heating the dispersion to 160 ° C. or more It is preferably made of. By heating the dispersion to 160 ° C. or higher, substances such as hemicellulose, which cause interaction and increase with water, can be decomposed, and the amount thereof can be reduced. From this viewpoint, the heating temperature is preferably more than 150 ° C, more preferably 160 ° C or more. If the temperature is excessively high, deterioration of the active ingredient is caused, so the upper limit of the heating temperature is preferably 200 ° C or lower, more preferably 190 ° C or lower, and even more preferably 180 ° C or lower. Heating is preferably carried out under pressure using a device such as a pressure cooker. The pressure is preferably 1.8 MPa or more. The tobacco material of the present invention produced under these conditions also exhibits an effect that microorganisms are particularly difficult to proliferate.

3. Tobacco products

A tobacco product can be made by adding the tobacco material of this invention to a base material. The base material is a tobacco body or an accessory member in a cigarette that can be smoked. Examples of the tobacco body include tobacco immediately after harvesting, dried tobacco, flavored tobacco, tobacco, and cigarettes. Examples of the accessories include winding paper, filters, and chip paper. Examples of the method of adding the tobacco material to the substrate include dropping, spraying, coating, impregnation, and the like, but are not particularly limited.

When the tobacco material of the present invention is added to cigarettes, it can be added to cigarettes, rolls, filters, chip paper, and the like constituting cigarettes. One place may be added, or two or more places may be added, such as adding to each of tobacco and chip paper. In addition, it is also possible to give different flavors when smoking tobacco products such as cigarettes by adding tobacco materials obtained from different types of cigarettes to different points of the wrapper. When tobacco material is added to a cigarette filter, it can also be impregnated with the filter.

When the tobacco material of the present invention is added to the tobacco, it is preferable to make the amount of tobacco particles contained in the tobacco material 0.01 to 5% by weight with respect to the weight of the tobacco, from the viewpoint of the efficiency of adding flavor. When a tobacco with a strong flavor is used for the tobacco material, the ratio may be set to a smaller amount, such as 0.01 to 0.1% by weight.

Example

[Example 1]

Tobacco particles having an average particle size of 30 μm were prepared as follows using leaf tobacco raw materials (Brazilian yellow species raw materials).

The raw materials for leaf tobacco were crushed to 10 mm or less using a cutter mill manufactured by Tokyo Atomizer. Thereafter, the ground leaf tobacco raw material was coarsely crushed to an average particle size of 100 μm or less using a CONDUX impact mill manufactured by NETZSCH, and then pulverized using a CSM impact-type pulverizer CSM to obtain tobacco particles having an average particle size of 30 μm or less. Got.

The tobacco particles were mixed with sterile water to obtain a slurry in which tobacco particles were suspended in water. The content of tobacco particles (dry) in the slurry was 16.7% by weight. The slurry was sealed in four reaction vessels, and subjected to high temperature and high pressure treatment under the following conditions, respectively, to produce the tobacco material of the present invention. There was no change in the suspension state of the tobacco particles even after the high temperature and high pressure treatment.

A: 160 ° C-10 minutes

B: 180 ° C-10 minutes

C: 180 ° C-30 minutes

D: 180 ° C-60 minutes

The slurry viscosity after treatment was measured at 20 ° C using a B-type viscometer (rotor No. 1, rotational speed of 0.3-100 rpm).

Moreover, the content of cellulose and hemicellulose was measured about the tobacco material (slurry) of this invention as follows.

1) The slurry was washed with water, and the residue precipitated by centrifugation (8000 rpm, 10 minutes) was collected. This operation was repeated twice.

2) The recovered residue was rinsed with ethanol, and the precipitate precipitated by centrifugation (8000 rpm, 10 minutes) was recovered. This operation was repeated twice.

3) The obtained residue was placed in a thermostat and dried (100 ° C-2 hours).

4) The weight of the dried residue was weighed, entrusted to the Japan Food Analysis Center, and the cellulose and hemicellulose were quantified by the Van soest method to obtain the content of cellulose and hemicellulose based on the weight of dried tobacco particles.

[Example 2]

The cigarette material of the present invention was produced and evaluated in the same manner as in Example 1, except that the content of the tobacco particles (dry) was changed to 14.3% by weight, and the high temperature and high pressure treatment was set to D above.

[Example 3]

The tobacco material of the present invention was produced and evaluated in the same manner as in Example 1, except that the content of the tobacco particles (dry) was changed to 20.0% by weight and the high temperature and high pressure treatment was set to D above.

[Comparative Example 1]

A comparative tobacco material was prepared and evaluated in the same manner as in Example 1 except that the high temperature and high pressure treatment was changed to the following.

X: not performed

Y: 150-5 minutes

Z: 150 ° C-15 minutes

[Comparative Examples 2 and 3]

Comparative tobacco materials were prepared and evaluated in the same manner as in Examples 2 and 3, except that the high-temperature and high-pressure treatment was not performed.

The results are shown in Fig. 1, Fig. 2, Table 1 and Table 2.

As shown in Fig. 1, in Comparative Example 1, comparative tobacco materials treated with conditions Y and Z (hereinafter referred to as "Comparative Example 1Y", etc.) showed a tendency to increase. This is presumed to be because, due to the high temperature and high pressure treatment under the above conditions, the polysaccharide was extracted in a large amount in the aqueous medium and was not decomposed, and thus the interaction with water increased. On the other hand, the tobacco material of the present invention such as Example 1A is considered to have achieved low viscosity by decomposing after polysaccharides including hemicellulose are extracted in a large amount in an aqueous medium. From the above, it is clear that the tobacco material of the present invention in which the amount of hemicellulose is below a certain value is low viscosity.

[Example 4]

For the tobacco material (tobacco particle (dry content) content: 16.7% by weight) of the present invention treated with high temperature and high pressure conditions A and C in Example 1, the treated product was hydrogen ion concentration in the slurry using a pH meter manufactured by METTLER TOLEDO. Was measured. The tobacco material was dispensed into 50 ml vials to provide for device testing. The device test was conducted by placing the vial in a constant temperature room at 35 ° C. Immediately after the start of the device test, sampling was conducted at 72 hours and 120 hours, and the normal viable cell count was measured. The measurement of the general viable cell count was carried out as follows in accordance with the method described in Japan Food Analysis Center HP.

1) The sample was diluted with sterile water to prepare a 10-fold diluted sample solution.

2) Samples diluted at each concentration were seeded in a standard agar medium, cultured at 35 ° C for 2 days, and the number of colonies was measured after the culture.

3) The initial number of live cells in the sample was calculated based on the difference in the number of colonies that appeared for each dilution factor.

[Comparative Example 4]

The comparative tobacco material which was not subjected to the high temperature and high pressure treatment of Comparative Example 1 was subjected to the device test in the same manner as in Example 4.

2 and 3 show these results. 2, the tobacco material of Comparative Example 4, which was not provided for high-temperature and high-pressure treatment, is 100-1000 times the number of bacteria in the device, but it is clear that the bacteria did not grow even if the tobacco material of the present invention was provided for 120 hours. It can be seen from FIG. 3 that the slurry has an environment in which the growth of bacteria is suppressed by high temperature and high pressure treatment.

Claims (13)

A tobacco material comprising an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium,
Tobacco material wherein the hemicellulose content in the tobacco material is 0.8% by weight or less based on the dried tobacco particles. According to claim 1,
Tobacco material having a pH of 4.8 or less. According to claim 1,
The said aqueous dispersion medium contains an aqueous organic compound, The tobacco material. The method of claim 3,
Tobacco material, 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. According to claim 1,
Tobacco material in which the content of water in the aqueous dispersion medium is more than 50% by weight in the aqueous dispersion medium. According to claim 1,
Tobacco material, the content of the tobacco particles is 1 to 40% by weight, According to claim 1,
The said tobacco particle | grain is a particle | grain derived from a tobacco raw material, a fermentation product of a tobacco raw material, or the heat-processed thing of a tobacco raw material, The tobacco material. The method of claim 7,
The tobacco raw material varieties are yellow species, burly species, native species, or orient leaves, tobacco material. A process for preparing a dispersion liquid comprising an aqueous dispersion medium and tobacco particles having an average particle diameter of 30 μm or less dispersed in the dispersion medium, and
Comprising the step of heating the dispersion to 160 ℃ or more,
The manufacturing method of the tobacco material of Claim 1. The method of claim 9,
The manufacturing method which performs the said heating under pressure. A tobacco product comprising the tobacco material of claim 1. The method of claim 11,
A tobacco product further comprising a substrate, comprising 0.01-5% by weight of the tobacco particles relative to the substrate. The manufacturing method of the tobacco product of Claim 12 including the process of adding the tobacco material of Claim 1 to the said base material.

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