JP6440705B2 - Method for producing oral tobacco material and oral tobacco material obtained by the method - Google Patents

Description

  The present invention relates to a method for producing an oral tobacco material and an oral tobacco material obtained by the method.

As an oral tobacco product that is inserted between the lips and gums in the oral cavity and enjoys the taste and aroma of powdered tobacco, oral tobacco materials containing wet powdered tobacco are contained in a moisture-permeable pouch. Widely known.
Several methods are known for producing such oral tobacco materials.
In the invention described in Patent Document 1, after raising the pH of the mixture comprising water and tobacco material to at least about 8.5, the mixture is allowed to run at a temperature and for a time sufficient to reduce the pH by at least about 0.5. It is described that the method includes a heating step.
The invention described in Patent Document 2 describes that the quality stability of the obtained oral tobacco material is improved by adjusting the pH of the oral tobacco material using a buffer solution.
As a tobacco material other than the oral tobacco material, for example, the following methods are known as methods for producing snuff.
In the invention described in Patent Document 3, it is described that magnesium carbonate is used as a material in order to increase the pH stability of the snuff product and suppress the growth of microorganisms.
In the invention described in Patent Document 4, it is described that steam at a specific temperature is applied to a tobacco material having a specific pH in order to enhance the flavor of the snuff product.

Special table 2010-534475 International Publication No. 2013/156544 US Patent Application Publication No. 2010/0294292 US Patent Application Publication No. 2010/0154811 Special table 2009-508523 International Publication No. 2009/082331

The wet powdered tobacco used in the production of oral tobacco materials is inherently weakly acidic (pH about 4.0-6.0) and is close to conditions suitable for bacterial growth. Therefore, in order to suppress the growth of bacteria and improve the quality stability and to give a desirable flavor, the pH is adjusted to be alkaline by adding a pH adjusting agent to the tobacco powder. From the viewpoint of maintaining the quality of the product, it is desirable that the adjusted pH is maintained at an alkaline pH over the storage period until it is consumed.
However, the amount of basic substance added to bring the wet powdered tobacco to a desired pH value is uniquely determined. If a large amount of a basic substance is added to the oral tobacco material, the pH value is greatly increased and the alkaline pH can be maintained for a long period of time, but there is a risk that the oral mucosa will be damaged during use. It is desirable that the oral tobacco material including the wet powder tobacco inserted into the oral cavity has a pH of 8.5 or less (Patent Documents 5 and 6).
In addition, at normal temperature, the pH of the tobacco product for oral use rapidly decreases, and the adjusted pH value cannot be maintained over a long period of time, resulting in a deterioration in flavor. Therefore, normally, oral tobacco products must be stored not at room temperature but at a low temperature (0 ° C. to 10 ° C.).
As various attempts to obtain a material having excellent quality stability, there are techniques described in Patent Documents 1 to 4.
In the methods described in Patent Documents 1 and 4 which try to solve the problem by the raw material processing technology, when the raw material is greatly modified by these methods, the delicate flavor of the tobacco raw material itself is impaired at the same time. There was a problem.
In addition, the techniques described in Patent Documents 2 and 3 which try to increase the pH stability by adding an additive to a tobacco material can be expected to improve quality stability, but these techniques alone are insufficient. . Moreover, stabilization of pH by an additive is not desirable to combine or use in a large amount for the reason of product design in order not to impair the flavor and texture.
Therefore, general or known methods and quality maintenance methods based on a combination thereof are not yet perfect, and there has been a demand for the development of a technique for improving quality stability without impairing the tobacco flavor.

  Accordingly, it is an object of the present invention to provide a production method for producing an oral tobacco material with improved quality stability and a flavor and an oral tobacco material produced by the production method. .

As a result of intensive studies by the present inventors, an alkaline tobacco material is prepared by adding a basic substance to a tobacco material, and the obtained tobacco material is aged in an environment not exceeding room temperature. It has been found that the manufacturing method can solve the above problems, and the present invention has been achieved.
In the present invention, “tobacco raw material” means that which has not undergone an aging step, and “tobacco material” means that which has been obtained through the production method of the present invention including an aging step.

That is, the present invention is as follows.
[1] A method for producing an oral tobacco material, comprising a step of preparing an alkaline tobacco raw material by adding a basic substance to the tobacco raw material and aging the obtained tobacco raw material in an environment not exceeding room temperature.
[2] The method for producing an oral tobacco material according to [1], wherein the time of the aging step is 0.5 hours or more, and the temperature range of the aging step is 40 ° C. or less.
[3] The method for producing an oral tobacco material according to [1] or [2], wherein the pH of the alkaline tobacco material is greater than 9.
[4] The method for producing an oral tobacco material according to any one of [1] to [3], further including a neutralization step of adding an acidic substance to the obtained tobacco material after the aging step.
[5] The method for producing an oral tobacco material according to any one of [1] to [4], further including a drying step of drying the obtained tobacco material after the aging step.
[6] An oral tobacco material obtained by the method for producing an oral tobacco material according to any one of [1] to [5].

  It is possible to produce an oral tobacco material with improved quality stability and good flavor. That is, the quality stability of the obtained tobacco material is improved and a flavorful oral octopus material is produced without adding a heating step for adjusting the pH after the addition of the basic substance. be able to.

It is a figure which shows the relationship between the pH at the time of an alkali treatment, and the time-dependent change of pH of the tobacco material in storage. It is a figure which shows the relationship between the amount of water at the time of an alkali treatment, and the time-dependent change of pH of the tobacco material in storage. It is a figure which shows the relationship between alkali treatment time and the time-dependent change of pH of the tobacco material in storage. It is a figure which shows the relationship between alkali treatment temperature and the time-dependent change of pH of the tobacco material in storage. It is a figure which shows the relationship between the temperature of an ageing | curing | ripening process, and content of a flavor component.

  Hereinafter, the present invention will be described in detail with reference to embodiments, examples, etc., but the present invention is not limited to the following embodiments, examples, etc., and can be arbitrarily set within the scope of the present invention. Can be changed and implemented.

The method for producing oral tobacco according to the present invention comprises preparing an alkaline tobacco raw material by adding a basic substance to a tobacco raw material containing tobacco cut or tobacco powder, and aging the obtained tobacco raw material in an environment not exceeding room temperature. It is a manufacturing method of the tobacco material for oral cavity including the process to make. Further, the quality stability in the present invention is mainly brought about by the stability over time of pH.
The tobacco cut used in the production method of the present invention is obtained by cutting the harvested tobacco leaves by a usual method. The tobacco powder is obtained by pulverizing harvested tobacco leaves by a usual method. The type of tobacco leaf is not particularly limited as long as it is used for oral tobacco and can be used as appropriate. Moreover, well-known thing can be employ | adopted suitably also about the width | variety of the tobacco cut, and the particle size of tobacco powder.
Furthermore, the moisture content of the tobacco leaf is not particularly limited, and examples thereof include a moisture content, for example, 5 to 15% by weight, obtained by cutting tobacco leaf that has undergone normal drying. In addition, a sodium chloride aqueous solution may be added to the tobacco material to adjust the salt concentration of the tobacco material.

  Moreover, you may include the process of disinfecting a tobacco raw material before adding the basic substance mentioned later. As temperature in this process, 105-110 degreeC can be mentioned as an example. Moreover, as time of this process, about 10 to 40 minutes can be mentioned as an example.

In the production method of the present invention, an alkaline tobacco raw material is prepared by adding a basic substance to the tobacco as a tobacco raw material to be subjected to the aging step described later. In the present invention, “alkaline tobacco material” means a tobacco material having a pH of 7 or more measured by a measurement method described later. The pH of the prepared alkaline tobacco material is preferably greater than 9, more preferably 9.5 or more, and even more preferably 10 or more. By subjecting the tobacco raw material having such a pH to the subsequent aging step, sufficient storage stability of the obtained tobacco material can be ensured.
Examples of the basic substance to be added to the cigarette can include strong bases exemplified by alkali metal hydroxides such as sodium hydroxide and potassium hydroxide. it can. By using a strong base, a reaction with a substance such as an ester in a tobacco leaf can be performed more efficiently in the subsequent aging step.
The pH of the tobacco raw material (before the aging step) used in the production method of the present invention is obtained by the following measurement method.
Extract 0.2 g of tobacco material with 200 mL of water at 200 rpm for 30 minutes, adjust the temperature to room temperature (25 ° C.), and measure with a pH meter. As a device, LAQUA F-72 manufactured by Horiba Ltd. is used.

The production method of the present invention includes a step of aging an alkaline tobacco raw material in an environment not exceeding room temperature. By including this aging step, a reaction between a substance such as an ester contained in the tobacco and the added basic substance occurs. When this reaction occurs, the stability with time of pH of the obtained tobacco material for oral cavity is increased. Here, high pH stability over time refers to a state in which the oral tobacco material is unlikely to decrease in pH during its storage. That is, a state where quality stability is high is maintained.
The time required for the aging step is preferably 0.5 hours or more from the viewpoint of surely carrying out the above reaction, preferably 48 hours or less from the viewpoint of the peak of the reaction, and within 24 hours from the viewpoint of work efficiency. Is more preferable. Among these, a time of about 0.5 to 2 hours, or about 0.5 to 1.5 hours can be mentioned.
About the temperature of an aging process, the loss | disappearance of the flavor component which the tobacco material for oral cavity should hold | maintain can be prevented because it is the temperature which does not exceed the ambient temperature (room temperature) at the time of making it age | cure | ripen. From this viewpoint, the upper limit of the temperature of the aging step is preferably 40 ° C. or less.
In addition, it is preferable that the temperature of an aging process is 40 degrees C or less, On the other hand, 0 degreeC or more can be mentioned as a minimum temperature.
This aging process is a process that does not require heating for artificially raising the temperature of the tobacco raw material to room temperature or higher. Moreover, the aspect which matures in a constant temperature state can be mentioned.
As an environment for aging, for example, an embodiment under normal pressure or a slight pressure (up to 0.2 MPa) can be applied.
Moreover, when performing under a normal pressure, you may carry out in either a sealed environment or an open environment. As an example of an open environment, there are natural ventilation and forced ventilation of the atmosphere.
Throughout the aging process, the pH of the tobacco material hardly changes (decreases by about 0.1 to 0.5).
The water content of the tobacco raw material used for the aging step is not particularly limited, and can be generally about 15 to 35% by weight.
In this aging step, the tobacco material to be aged may be allowed to stand or may be aged while being stirred using a stirring means.
In the present invention, the term “ripening” means that the temperature of the tobacco raw material is left in an environment not exceeding room temperature as described above, and the temperature adjustment operation or the tobacco raw material is performed as necessary. Basically, the tobacco raw material is left unattended, without performing any operation other than stirring to advance the reaction.

The production method of the present invention may include a step of adding an acidic substance to the obtained tobacco material to lower the pH of the tobacco material after the aging step. As an example, this step may be a neutralization step.
Examples of the acidic substance include weak acids such as phosphoric acid, citric acid, and malic acid, and strong acids such as hydrochloric acid.

  In addition, after the neutralization step, a step of adding a weak base such as potassium carbonate or sodium carbonate or a strong base such as sodium hydroxide or potassium hydroxide to the tobacco material, the pH of the tobacco material is adjusted to 7. You may adjust to about 5-9. Including this step contributes to improving the quality stability (preventing the growth of microorganisms, etc.) of the tobacco material obtained.

Moreover, the manufacturing method of the present invention may include a drying step for drying the tobacco material obtained through the above-described steps. By including a drying step, the obtained tobacco material can be adjusted to an appropriate moisture content as an oral tobacco material. In addition, a drying process can be performed even if it does not pass through a neutralization process.
The aspect which reduces the moisture content of the tobacco material obtained to about 10 to 40 weight% by a drying process can be mentioned.
In the case of drying, the aspect which raises the temperature of a tobacco material to 70-90 degreeC can be mentioned.

The tobacco material of the present invention may be added with a moisturizing agent such as glycerin, a sweetener for adjusting the taste, and a fragrance for characterizing the taste before making it into an oral tobacco product.
In addition, the tobacco material of the present invention may be added with water in order to have an appropriate water content as an oral tobacco product. About 20 to 50 weight% can be mentioned as water | moisture-content content at the time of providing to a tobacco product for oral cavity.

The oral tobacco material obtained through the above steps is prepared through the above steps, and before the product shown below, the pH is suitable for oral tobacco products (about 7.5 to 9). Adjust as appropriate.
The pH of the oral tobacco material obtained through the production method of the present invention is the same as in the case of the above-described tobacco raw material, 0.2 g of tobacco material is extracted with 20 mL of water at 200 rpm for 30 minutes, and the room temperature ( It means a value obtained by adjusting the temperature to 25 ° C. and measuring with a pH meter. As a device, LAQUA F-72 manufactured by Horiba Ltd. is used.

When the tobacco material for oral cavity of the present invention is, for example, snus, it is obtained by filling the above-described tobacco material into a packaging material using a raw material such as a nonwoven fabric by a known method. For example, the amount of tobacco material is adjusted and filled, and snus is obtained by sealing by means such as heat sealing.
The packaging material can be used without any particular limitation, but a cellulose-based nonwoven fabric is preferably used.
When the oral tobacco material of the present invention is, for example, a gum, the tobacco raw material used in the present invention is obtained by mixing using a known gum base and a known method. A bite cigarette, a hook cigarette, and a compressed cigarette can also be obtained using a known method except that the cigarette material used in the present invention is used. Moreover, an edible film can also be obtained by using known materials and methods, except that the tobacco raw material used in the present invention is used.

  Examples The present invention will be described more specifically with reference to examples. However, the present invention is not limited to the description of the following examples unless it exceeds the gist. “%” Of moisture shown in the following examples and the like means “% by weight”.

<Example 1>
(Experimental operation)
Tobacco slurry was prepared by adding 25 ml of ultrapure water (Milli-Q water) to 5 g of tobacco raw material. Sodium hydroxide was added thereto so that the pH was 8, 9, 10, and 11, and the mixture was allowed to stand at 4 ° C. for 24 hours. The slurry which was allowed to stand was neutralized to pH 6 by adding hydrochloric acid, and sodium chloride was added as appropriate in order to adjust the salt concentration at each level. The neutralized sample was freeze-dried, and a sodium hydroxide aqueous solution was added to obtain a sample so that the water content was 30 to 35% and the pH was 8.0 to 8.5. These were hermetically packaged, and then stored in a constant temperature and humidity machine at 40 ° C., and the pH was measured after 1 week and 2 weeks.
<Experimental operation of Control>
A tobacco slurry was prepared by adding 25 ml of ultrapure water to 5 g of the tobacco raw material.
It was allowed to stand at 4 ° C. for 24 hours. Thereafter, 15 mL of a 3.64% by weight aqueous sodium chloride solution was added. Then, the slurry was well dried in a constant temperature and humidity chamber at 60 ° C. and 20% RH until there was no water. A sodium hydroxide aqueous solution was added so that the water content was 30 to 35% and the pH was 8.0 to 8.5.

The results obtained using the above samples are shown in FIG.
From the results shown in FIG. 1 and Table 1, there was a tendency that the pH reduction width was smaller as the sample was made into a slurry state with higher alkalinity. This tendency was prominent at pH 10 or higher.

<Example 2>
(Experimental operation)
20 g of tobacco material was weighed out, 0,100,200 mL of ultrapure water was added, and 20 mL of a 1 mol / L sodium hydroxide aqueous solution was added thereto and stirred. The mixture was allowed to stand at 22 ° C. for 24 hours. 20 mL of 1 mol / L hydrochloric acid was added to the slurry after standing, and the mixture was stirred and neutralized. The slurry was dried in a constant temperature and humidity chamber at 60 ° C. and 20% RH until the water content became 5% or less. A sodium hydroxide aqueous solution was added to these so that the water content was 30 to 35% and the pH was 8.0 to 8.5 to obtain samples. These were hermetically packaged, and then stored in a constant temperature and humidity machine at 40 ° C., and the pH was measured after 1 week and 2 weeks. The results are shown in FIG.
From the results of FIG. 2 and Table 2, it was found that the increase in the amount of water during the aging step after adjusting to alkaline has little effect on the quality stability of the treated tobacco material after treatment.

<Example 3>
(Experimental operation)
20 g of tobacco material was weighed out and 20 mL of 1 mol / L sodium hydroxide aqueous solution was added and stirred. It left still at 22 degreeC for 1 hour, 6 hours, and 24 hours. 20 mL of 1 mol / L hydrochloric acid was added to the slurry after standing, and the mixture was stirred and neutralized. The slurry was dried in a constant temperature and humidity chamber at 60 ° C. and 20% RH until the water content became 5% or less. A sodium hydroxide aqueous solution was added to these so that the water content was 30 to 35% and the pH was 8.0 to 8.5 to obtain samples. These were hermetically packaged, and then stored in a constant temperature and humidity machine at 40 ° C., and the pH was measured after 1 week and 2 weeks. The results are shown in FIG.
From the results of FIG. 3 and Table 3, it was found that the longer the time of the aging step after adjusting to alkaline, the higher the quality stability of the treated tobacco material. However, a treatment time that is too long reduces work efficiency, so it is preferably within 24 hours.

<Example 4>
(Experimental operation)
20 g of tobacco material was weighed out and 20 mL of 1 mol / L sodium hydroxide aqueous solution was added and stirred. Each was left to stand at 40 ° C., 22 ° C. and 4 ° C. for 6 hours. 20 mL of 1 mol / L hydrochloric acid hydrochloric acid was added to the slurry after standing and stirred to neutralize. The slurry was dried in a constant temperature and humidity chamber at 60 ° C. and 20% RH until the water content became 5% or less. A sodium hydroxide aqueous solution was added to these so that the water content was 30 to 35% and the pH was 8.0 to 8.5 to obtain samples. These were hermetically packaged, and then stored in a constant temperature and humidity machine at 40 ° C., and the pH was measured after 1 week and 2 weeks. The results are shown in FIG.
From the results of FIG. 4 and Table 4, it was found that the higher the temperature of the aging step after adjustment to alkalinity, the better the storage stability of the treated oral tobacco material. However, 40 degrees C or less is preferable from a viewpoint of the quality change of the tobacco material for oral cavity.

２）ｐＨの分析方法
試料が刻の場合、粉砕品０．２ｇを２０ｍＬの水で２００ｒｐｍで３０分抽出し、ｐＨメーターで測定した。機器は、堀場製作所社製ＬＡＱＵＡ Ｆ−７２を使用した。(Various analysis methods)
Various analyzes used in this study were carried out according to the following conditions 1) to 4).
1) Moisture analysis method The tare empty weight [a] and the weight [b] after filling 1 g of chopped pieces are measured and dried in an oven preheated to 100 ° C. for 1 hour. The weight [c] after cooling was measured, and the water content was calculated by the following formula (*).

2) Analysis method of pH When the sample was chopped, 0.2 g of the pulverized product was extracted with 20 mL of water at 200 rpm for 30 minutes and measured with a pH meter. As a device, LAQUA F-72 manufactured by Horiba Ltd. was used.

<Example 5>
A tobacco slurry was prepared by adding 25 ml of ultrapure water to 5 g of the tobacco raw material. Sodium hydroxide was added so that it might become pH 11, and it left still in a constant temperature / humidity machine of 22 degreeC, 40 degreeC, 60 degreeC, and 80 degreeC for 2 hours, respectively. The slurry which was allowed to stand was neutralized to pH 6 by adding hydrochloric acid, and sodium chloride was added as appropriate in order to adjust the salt concentration at each level. The neutralized sample was dried and then adjusted by adding an aqueous sodium hydroxide solution to obtain samples at each constant temperature.

About the sample which aged, the flavor component (furfural) was analyzed by HS-SPME-GC / MS shown below.
Each of the obtained samples was weighed in an amount of 0.2 g in a vial, and after the volatile components in the HS on which the sample was placed were in an equilibrium state, they were adsorbed on SPME fibers and subjected to GC / MS analysis.
The conditions of GC / MS are as described in Table 5 below.

  FIG. 5 shows the detection intensity (n = 2) of furfural contained in each sample with respect to the analysis result of furfural by GC / MS. From this result, it was found that when a temperature exceeding 40 ° C. was adopted as the temperature of the aging step, the flavor components in the tobacco raw material were greatly reduced.

  According to the production method of the present invention, a buffering agent for adjusting the pH of the tobacco material is required by including a step of aging the tobacco raw material to be alkaline and then aging it at a temperature not exceeding room temperature. In addition, it is possible to provide an oral tobacco material having a good flavor and high quality stability without heating a tobacco material containing a basic substance.

Claims (6)

Adding a basic substance to the tobacco material to prepare an alkaline tobacco material, and aging the obtained tobacco material in an environment not exceeding room temperature for not less than 0.5 hours and not more than 48 hours ;
A method for producing an oral tobacco material comprising a step of adding an acidic substance to the obtained tobacco material and lowering the pH of the tobacco material after the aging step. Temperature range ripening step is 40 ° C. A method for fabricating oral tobacco material according to claim 1.   The manufacturing method of the tobacco material for oral cavity of Claim 1 or 2 whose pH of an alkaline tobacco raw material is a value larger than nine.   The oral tobacco material according to any one of claims 1 to 3, wherein the step of lowering the pH of the tobacco raw material by adding an acidic substance to the obtained tobacco material after the aging step is a neutralization step. Production method.   The method for producing an oral tobacco material according to any one of claims 1 to 4, further comprising a drying step of drying the obtained tobacco material after the aging step.   The oral tobacco material obtained by the manufacturing method of the oral tobacco material as described in any one of Claims 1-5.

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