TWI650082B - Tobacco packing for non-burning type heated smoking article - Google Patents

Abstract

An object of the present invention is to provide a tobacco filler for a non-combustion type heated smoking article, which is capable of suppressing evaporation of a flavor-absorbing component in a non-combustion type heated smoking article in a form of heating a filler containing tobacco silk. It can reduce the "scent of taste and taste". An acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366° C. to 600° C. is added to the tobacco filler, thereby suppressing a decrease in the evaporation amount of the flavoring component and suppressing the “sweet absorption”. Taste the sense of hindrance."

Description

Non-combustion type tobacco filler for heating smoking articles

The present invention relates to a tobacco filler for use in a non-combustion type heated smoking article for use in a non-combustion type heated smoking article.

In recent years, non-combustible heated smoking articles that do not burn tobacco and taste tastes have been developed to replace cigarettes. Representatives are known to fill the interior of the pot-shaped container with aroma-absorbing ingredients and aerosol-generating components. The form to be used, or the heat source at the front end.

Moreover, in such a non-combustion type heated smoking article, a technique of adding an acid to a filler has also been reported (see Patent Documents 1 to 3).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2014/190079

[Patent Document 2] US Patent Application Publication No. 2015/0020820

[Patent Document 3] US Patent Application Publication No. 2014/0345631

When smoking is carried out using a non-combustion type heated smoking article, the amount of evaporation of the flavoring component is sometimes insufficient compared to the cigarette, or the so-called "sweet taste taste barrier" is felt.

It is an object of the present invention to provide a non-combustion type heated smoking article, particularly a tobacco filler for a non-combustion type heated smoking article, which is capable of suppressing evaporation of a flavor-absorbing component in a form of heating a filler containing tobacco silk. The reduction is at the same time, and the "sweet taste and taste inhibition" can be suppressed.

In order to solve the above problems, the inventors of the present invention have accumulated intensive studies and found that by adding an acid satisfying a specific condition to the tobacco filler, it is possible to suppress a decrease in the evaporation amount of the flavoring component and suppress the "fragrance taste". The taste is hindered, and the present invention is finally completed.

That is, the present invention is as follows.

<1> A tobacco filler comprising a tobacco filler and a tobacco-filled liquid, a tobacco filler for a non-combustion type heated smoking article, comprising a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366 ° C or more , acid below 600 ° C.

The tobacco filler according to the above aspect, wherein the acid is at least one selected from the group consisting of ascorbic acid, isoascorbic acid, behenic acid, tetracosic acid, octadecanoic acid, and decanoic acid. group.

<3> The tobacco filler according to <1>, wherein the acid content is 0.25 mass% or more and 10 mass% or less of the total tobacco filler. The tobacco filler according to any one of <1> to <3> wherein the liquid in which the aerosol is produced contains propylene glycol (PG).

According to the present invention, in the non-combustion type heated smoking article in which the filler containing the tobacco yarn is heated, the decrease in the evaporation amount of the flavor-absorbing component can be suppressed, and the "smell-sucking taste-suppressing feeling" can be suppressed.

10‧‧‧Non-burning heated smoking articles

101‧‧‧Battery

102‧‧‧Place filler

103‧‧‧ pot

104‧‧‧heater

105‧‧ ‧ nozzle

Fig. 1 is a cross-sectional view showing an example of a non-combustion type heated smoking article.

Fig. 2 is a graph showing the relationship between the first acid dissociation constant of the acid and the evaporation amount of the flavoring taste component.

Fig. 3 is a graph showing the relationship between the boiling point of the acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and the feeling of odor absorption.

Fig. 4 is a graph showing the relationship between the boiling point of the acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and chemical odor.

Fig. 5 is a graph showing the relationship between the content of acid and the feeling of odor absorption.

Fig. 6 is a graph showing the relationship between the type of liquid which generates an aerosol and the feeling of odor absorption.

In the description of the present invention, a specific example will be described. However, the present invention is not limited to the following, and may be modified as appropriate without departing from the scope of the invention.

<Non-burning type tobacco filler for heating smoking articles >

A tobacco filler for a non-combustion type heated smoking article (hereinafter sometimes simply referred to as "tobacco filler of the present invention") is a tobacco filler containing tobacco silk and an aerosol-generating liquid. Among them, an acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366 to 600 ° C or less is contained.

The inventors of the present invention have clarified various problems with respect to non-combustion type heated smoking articles, particularly smoking articles in the form of a filler containing tobacco silk.

For example, when an acid is added to a filler containing tobacco silk (generally, a liquid containing an aerosol), the evaporation amount of the flavoring component may be lowered. It is considered that the acid added and the aerosol-generating liquid permeate into the inside of the tobacco yarn to form a salt with the flavor-absorbing component in the tobacco yarn. In a non-combustion type heated smoking article having a high heating temperature, the salt is dissociated by heating, or the evaporation amount of the flavoring component is suppressed by a high temperature, but the non-combustion type heating at a low heating temperature is considered to be low. The impact of smoking articles is significant.

In addition, in smoking using a non-combustion type heated smoking article, there is a case where it is stimulated by tobacco, or a physiologically spontaneous action such as "squeaky" is felt. It is considered that this component contains a component which hinders the taste of the scent, and this component volatilizes together with a solvent such as propylene glycol, and the sensation of "sweet taste taste" is felt.

The inventors of the present invention have clarified that the formation of a salt system between the acid and the tobacco extracting taste component is related to the first acid dissociation constant (pKa ₁ ) showing the strength of the acid, and the acid having the first acid dissociation constant as a specific range is selected. It can suppress the formation of salt; further, an acid having a boiling point higher than a specific temperature is selected, and chemical odor (drug odor) is not easily perceived. In other words, it has been found that the "acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366 ° C to 600 ° C or less" is added to the tobacco filler, whereby the decrease in the evaporation amount of the flavoring component can be suppressed. At the same time, it can suppress the "sweet taste and taste barrier".

Further, the "first acid dissociation constant" means an acid dissociation constant for water at normal temperature (25 ° C).

Further, the "boiling point" means a boiling point of 760 mmHg.

Hereinafter, the "non-combustion type heated smoking article", "tobacco silk", "liquid generating aerosol", and the acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366 ° C or more and 600 ° C or less are described in detail. "Wait.

The tobacco filler of the present invention is a tobacco filler for a non-combustion type heated smoking article comprising tobacco silk and an aerosol-generating liquid, but the specific structure of the non-combustion type heated smoking article filled with the tobacco filler of the present invention is not It is particularly limited, and a known one can be suitably used. Hereinafter, a specific example will be described.

The non-combustion type heated smoking article is a structure having the non-combustion type heated smoking article 10 shown in Fig. 1 . Fig. 1 is a cross-sectional view showing a cylindrical non-combustion type heated smoking article 10 cut in the longitudinal direction thereof, and has a structure of a battery 101, a pot 103 in which the filler 102 is placed, and a heater 104 and a suction nozzle 105. The tobacco filler of the present invention is filled in a pan 103 to generate an aerosol by heating.

Heating temperature of tobacco filler in non-burning heated smoking articles It is usually 22 ° C or higher, preferably 100 ° C or higher, more preferably 150 ° C or higher, usually 350 ° C or lower, preferably 300 ° C or lower, more preferably 250 ° C or lower. When the heating temperature of the tobacco filler is a non-combustion type heated smoking article within the above range, the problem of "sweet taste and taste inhibition" is apt to occur, and the characteristics of the tobacco filler of the present invention can be more effectively utilized.

Examples of the type of the tobacco yarn include a yellow species, a Burley species, a seed, a reconstituted tobacco, and the like, and the parts to be used include, for example, leaves (tempered silk), stems, veins (medium bone), roots, and Flowers, etc.

The size of the tobacco yarn is not limited, but the measurement method using the projected sectional area (for example, using a method such as Camsizer (Retsch)), the diameter of the equivalent sphere is usually 1.5 mm or less, preferably 0.5 mm or less, usually 0.01. Mm or more.

The content of the tobacco yarn of the tobacco filler of the present invention is usually 20% by mass or more, preferably 30% by mass or more, more preferably 40% by mass or more, usually 80% by mass or less, preferably 70% by mass or less, more preferably The best quality is 60% by mass or less. When it is in the above range, it is easy to suppress the decrease in the evaporation amount of the flavoring component, and it is possible to more effectively suppress the "sweet taste and taste inhibition".

Examples of the liquid system for generating an aerosol include polyhydric alcohols such as glycerin, propylene glycol, triethylene glycol, and tetraethylene glycol; methyl stearate, dimethyl dodecanoate, and dimethyl tetradecanoate. A carboxylic acid aliphatic ester. Further, the liquid system is not limited to one type, and may be used in combination of two or more types.

The liquid system for generating an aerosol is preferably one containing propylene glycol. Propylene glycol is a safe solution that can be used in foods and medical products because of its boiling point. Low, easy to gasify, so it can easily generate visible smoke. On the other hand, since propylene glycol has a high vapor pressure, it has a property of being easily volatilized in the oral cavity. Therefore, it is considered to be a volatile atmosphere which hinders the taste of the fragrance contained in the aerosol, and as a result, it is easy to cause a problem of "sweet taste and taste inhibition". Therefore, the characteristics of the tobacco filler of the present invention can be utilized more effectively.

The content of the liquid of the aerosol for producing a tobacco filler of the present invention is usually 20% by mass or more, preferably 30% by mass or more, more preferably 40% by mass or more, usually 80% by mass or less, and preferably 70% by mass or less. Hereinafter, it is more preferably 60% by mass or less. When it is in the above range, the decrease in the evaporation amount of the flavoring component can be more easily suppressed, and the "sweet taste and taste inhibition" can be more effectively suppressed.

The tobacco filler of the present invention is characterized by containing an acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366 to 600 ° C (hereinafter sometimes referred to simply as "acid"), but if the conditions are satisfied The specific acid system is not particularly limited, and a known one can be suitably used as needed. Hereinafter, a specific example will be described.

The first acid dissociation constant of the acid is preferably 4.5 or more, preferably 5.5 or less.

The boiling point of the acid is preferably 400 ° C or higher, preferably 560 ° C or lower.

In the above range, the "sweet taste and taste inhibition" can be more effectively suppressed.

Examples of the acid system include ascorbic acid, erythorbic acid, behenic acid, tetracosic acid, octadecanoic acid, and lauric acid.

Among them, ascorbic acid and isoascorbic acid are preferred.

According to the above, it is possible to more easily suppress the decrease in the evaporation amount of the flavoring component and to more effectively suppress the "sweet taste and taste barrier".

The content of the acid in the tobacco filler of the present invention is usually 0.25 mass% or more, preferably 1 mass% or more, and usually 10 mass% or less. When it is in the above range, it is possible to more easily suppress the decrease in the evaporation amount of the flavoring component and to more effectively suppress the "sweet taste and taste inhibition".

The tobacco filler of the present invention comprises tobacco silk and an aerosol-generating liquid, but usually the water and the like contained in the tobacco yarn are dissolved to the aerosol-generating liquid, so that the tobacco filler of the present invention also contains water. .

The content of water in the tobacco filler of the present invention is usually 5% by mass or more, preferably 7.5 mass% or more, more preferably 10 mass% or more, usually 30 mass% or less, and preferably 25 mass% of the total tobacco filler. % or less, more preferably 20% by mass or less. When it is in the above range, it is easier to suppress the decrease in the evaporation amount of the savory taste component, and it is possible to more effectively suppress the "sweet taste taste sensation".

[Examples]

Hereinafter, the present invention will be specifically described by way of examples, but it should be modified as appropriate without departing from the scope of the invention.

<Examples 1 to 6 and Comparative Examples 1 to 21: Effect of first acid dissociation constant and boiling point of acid>

100 mg of a yellow silk (manufactured in Japan), a liquid obtained by mixing propylene glycol and glycol at a ratio of 1:1 (weight ratio), and the acid shown in Table 1 was converted into 5% by mass based on the total mass of the composition. kind. In addition, the tobacco silk system was pulverized in advance by a household mixer, and then vibrated for 2 minutes in a mesh (AS200, manufactured by Retch) conditions: amplitude-1.5 mm/"g", and sieve mesh was used. Those with a diameter of 0.5mm or less.

The sample to be produced is placed on a pod dedicated to the trade name "Ploom (registered trademark)" sold by Japan Tobacco Industry Co., Ltd., and is stored at a temperature of 2 days or more and 22 degrees C and a humidity of 60%. Further, the heating temperature of the tobacco yarn when the Ploom was used (when the cellulose was stabilized) was confirmed to be about 160 ° C to 170 ° C by measurement before the use of the thermocouple.

The smoking test used a smoking machine (Borgwaldt, RM-26) and was fitted with a pod made by Ploom. Under the prescribed smoking conditions (55ml/2S, smoking interval 30s), the initial 10 breaths (puff) were measured. The scent of the scent absorbs the amount of evaporation of the taste component. In addition, this experiment selects nicotine which is easy to measure as a component index. The smoke trapping system uses a Cambridge Filter pod to extract the smoke trapped by the filter with a methanol solvent for 40 minutes, and quantify the nicotine by GC-FID.

The sensory evaluation of the smoking test was carried out in four cases, and the "chemical odor" was evaluated in a 7-stage evaluation of "sweet taste" and acid taste. The term "chemical odor" refers to the odor of a drug, and a person has a bad odor when smoking. The larger the value indicated, the stronger the chemical odor. In the results of the present example, when the evaluation value of the taste taste resistance and the chemical odor is 2 or less, the evaluator can sufficiently recognize the value of the difference and is an area excellent in the effect. The evaluation is a value recorded by the feeling felt in smoking.

The physical properties of the acid, the evaporation amount of the flavoring component, and the results of the functional evaluation are shown in Table 1, respectively.

A graph showing the relationship between the first acid dissociation constant of the acid and the evaporation amount of the flavoring component is shown in Fig. 2. In Fig. 2, the amount of the acid-based taste-absorbing component having a small first acid dissociation constant is low, and when the acid dissociation constant is 4.0 or more, the amount of the unsweetened taste component can be obtained in almost all of the acid. The result is equal. From the results, it was found that the use of an acid having a first acid dissociation constant of 4.0 or more did not cause a decrease in the evaporation amount of the flavoring component. When the pH of the acid is considered and the first acid dissociation constant is almost 6.0 or less, the preferred range is that the first acid dissociation constant is 4.0 or more and 6.0 or less.

Further, a graph showing the relationship between the boiling point of the acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and the feeling of odor absorption is shown in Fig. 3. When the boiling point is more than 366 ° C or more, it is understood that almost all of the acids can reduce the taste and taste resistance, and it is understood that the boiling point is important for the reduction of the taste and taste resistance.

Further, a graph showing the relationship between the boiling point of the acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and the chemical odor is shown in Fig. 4 . It is understood that the acid-based chemical odor having a boiling point of 366 ° C or higher is also low. Further, when the boiling point of the acid is too high, the amount of release accompanying the heating is small, so that it is preferably 600 ° C or lower.

From the above, it is known that the acid having a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366° C. or more and 600° C. or less has little influence on taste or flavor under the condition of maintaining the amount of the flavoring component. It can reduce the taste and taste.

<Examples 7 to 12: Effect of acid content>

In addition to the previous examples of isoascorbic acid, tetracosic acid, and nineteen The content of the acid in the acid was changed from 5% by mass to 3% by mass and 1% by mass, and the same procedure as in the previous examples was carried out. Moreover, in this evaluation, since the evaporation amount of the fragrant taste taste component is the same, only the effect of the taste sensation of the scent is tasted.

A graph showing the relationship between the content of the acid and the feeling of the taste of the scent is shown in Fig. 5. From Fig. 5, it was confirmed that the effect of the acid was also high when the content was lowered to 1% by mass. This simple method can exert an effect even when the acid having a high effect is in a small amount. Acids such as erythorbic acid, tetrakisic acid, and octadecanoic acid have a high boiling point, so they are evaporated by heating, and after being condensed to form an aerosol, the property remaining in the particles is strong, and the residue in the oral cavity during smoking remains. In an aerosol, a high effect can be obtained. When the acid content is excessive, the characteristics of the acid tend to be prominent, so that a suitable content is considered to be 10% by mass or less.

<Examples 13 to 16, Comparative Examples 22 to 25: produced Effect of aerosol liquids >

The test was carried out in the same manner as in the previous examples and comparative examples except that the aerosol-generating liquid was changed. In the test, as the solvent for generating the aerosol liquid, in addition to propylene glycol, glycol, diacetin, triethyl citrate (TEC), or acid may be used. The results are shown in Figure 6. It can be seen that when propylene glycol is used, the scent absorption taste is the highest, and the other liquid systems are lower. From this point of view, the liquid produced by the aerosol which is most effective in the appearance is propylene glycol, and the present technique can be said to have an effect when the amount is propylene glycol in a small amount or in a small amount.

[Industry use possibility]

The tobacco filler of the present invention can be utilized for filling a non-combustible heated smoking article with a smoker.

Claims (3)

A tobacco filler for non-combustion type heated smoking article, comprising tobacco silk and an aerosol generating liquid, wherein the tobacco filler contains a first acid dissociation constant of 4.0 or more and 6.0 or less and a boiling point of 366 ° C or more and 600 ° C or less The acid content of the tobacco filler is 1% by mass or more and 10% by mass or less. The tobacco filler according to claim 1, wherein the acid is at least one selected from the group consisting of ascorbic acid, isoascorbic acid, behenic acid, tetracosic acid, octadecanoic acid, and decanoic acid. group. The tobacco filler according to claim 1 or 2, wherein the liquid in which the aerosol is produced contains propylene glycol (PG).