Heating cigarette and preparation method thereof

Abstract

The invention provides a preparation method of a mint-flavored heating cigarette, which comprises the following steps: A) mixing and centrifuging tobacco powder and fiber to obtain a solid; b) loosening the solid, adding menthol diester carbonate, essence, glycerol and water, mixing, and centrifuging to obtain a mixture; and C) preparing the mixture into slices, and heating to obtain the heated cigarette. According to the preparation method of the mint-flavored heating cigarette, provided by the invention, menthol is replaced by the menthol carbonic acid diester, so that the stability of the mint-flavored heating cigarette is better.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco, and in particular to a heated cigarette and a preparation method thereof. Background Art

[0002] Mint-flavored heated cigarettes are one of the mainstream flavors of heated cigarettes at present. However, because the cooling agents such as menthol added to mint-flavored heated cigarettes are more volatile, the cooling taste will gradually weaken during storage, thus affecting the product quality.

[0003] Tobacco flavor precursors, also known as latent aroma substances, are an important class of substances present in tobacco. Compared with conventional volatile aroma components, these compounds have the characteristics of weak volatility under natural conditions and stable chemical properties. They themselves have no aroma or have little effect on the aroma sensation, but they can evenly release aroma components when heated, playing an important role in the aroma style and taste characteristics of cigarettes.

[0004] Therefore, using a menthol-containing latent aroma substance to replace menthol, which can be released in heated cigarettes but is stable during storage, is of great significance for the development of mint-flavored heated cigarettes. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a mint-flavored heated cigarette, and the mint-flavored heated cigarette provided by the present invention has a more stable release.

[0006] The present invention provides a method for preparing a mint-flavored heated cigarette, comprising the following steps:

[0007] A) mixing tobacco powder and fibers and centrifuging to obtain a solid;

[0008] B) loosening the solid, adding menthol carbonate diester, essence, glycerin and water to mix, and centrifuging to obtain a mixture;

[0009] C) preparing the mixture into thin sheets, and heating them to obtain heated cigarettes.

[0010] Preferably, the particle size of the smoke powder in step A) is 80-100 mesh.

[0011] Preferably, the amount of the fiber added in step A) is 1.0 wt% to 2 wt% of the tobacco leaf.

[0012] Preferably, the centrifugation in step A) is performed at 1000-2000 rpm for 5-10 min.

[0013] Preferably, in step B), the mass ratio of the solid, menthol carbonate diester, flavor, glycerin and water is 100:(1-5):(1-2.5):(25-30):(25-30).

[0014] Preferably, the structure of the menthol carbonate diester is as shown in formula (I);

[0015]

[0016] Preferably, the centrifugation in step B) is performed at 1000-2000 rpm for 5-10 min.

[0017] Preferably, the method for preparing the thin slices in step C) is a roller pressing method; and the heating is baking at 100-150° C. for 5-10 minutes.

[0018] The present invention provides the use of menthol carbonate diester represented by formula (I) as a latent aroma substance in heated cigarettes;

[0019]

[0020] The present invention creatively discovered that the menthol carbonate diester can replace menthol as a latent aroma substance released in heated cigarettes and is more stable during storage.

[0021] The present invention provides a mint-flavored heated cigarette, which is prepared by the preparation method described in any one of the above technical solutions.

[0022] Compared with the prior art, the present invention provides a method for preparing a mint-flavored heated cigarette, comprising the following steps: A) mixing tobacco powder and fiber and centrifuging to obtain a solid; B) loosening the solid, adding menthol carbonate diester, flavor, glycerin and water, mixing, and centrifuging to obtain a mixture; C) preparing the mixture into a sheet, heating, and obtaining a heated cigarette. The method for preparing a mint-flavored heated cigarette provided by the present invention uses menthol carbonate diester instead of menthol, so that the stability of the mint-flavored heated cigarette is better. DETAILED DESCRIPTION

[0023] The present invention provides a heated cigarette and a method for preparing the same. Those skilled in the art can refer to the contents of this article and appropriately improve the process parameters to achieve the same. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and they all fall within the scope of protection of the present invention. The methods and applications of the present invention have been described through preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the methods and applications of this article without departing from the content, spirit and scope of the present invention to implement and apply the technology of the present invention.

[0024] It should be understood that the expression "one or more of..." includes each of the items recited after the expression individually and in various different combinations of two or more of the recited items, unless otherwise understood from the context and usage. The expression "and / or" in combination with three or more recited items should be understood to have the same meaning, unless otherwise understood from the context.

[0025] The use of the terms "comprising", "having" or "containing", including their grammatical synonyms, should generally be understood as open and non-restrictive, for example not excluding other unrecited elements or steps, unless otherwise specifically stated or otherwise understood from the context.

[0026] In this application, the term "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0027] In this application, "at least one" means one or more, "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.

[0028] The present invention provides a method for preparing a mint-flavored heated cigarette, comprising the following steps:

[0029] A) mixing tobacco powder and fibers and centrifuging to obtain a solid;

[0030] B) loosening the solid, adding menthol carbonate diester, essence, glycerin and water to mix, and centrifuging to obtain a mixture;

[0031] C) preparing the mixture into thin sheets, and heating them to obtain heated cigarettes.

[0032] The preparation method of the mint flavor heated cigarette provided by the invention comprises the following steps: firstly mixing tobacco powder and fiber and centrifuging to obtain a solid.

[0033] Take tobacco leaves and grind them to obtain tobacco powder. The tobacco raw materials of the present invention may include crushed tobacco leaves, crushed reconstituted tobacco, expanded shredded fillers, expanded stems and leaflets, etc. However, the present invention is not limited thereto.

[0034] The particle size of the smoke powder is 80-100 meshes; specifically, it can be 80 meshes, 90 meshes, 100 meshes; or a range value between any two of the above.

[0035] The tobacco powder is added to the fiber and then centrifuged; the fiber is added in an amount of 1.5wt% to 2wt% of the tobacco leaf, specifically 1.0wt%, 1.5wt%, 2wt% or any range between the above two.

[0036] The mixture is then centrifuged at 1000 to 2000 rpm for 5 to 10 minutes.

[0037] The solid is loosened into powder. The present invention does not limit the specific method of loosening into powder, which is well known to those skilled in the art.

[0038] The solid is loosened, menthol carbonate diester, flavor, glycerin and water are added, mixed, and centrifuged to obtain a mixture.

[0039] According to the present invention, the mass ratio of the solid, menthol carbonate diester, essence, glycerin and water is 100:(1-5):(1-2.5):(25-30):(25-30).

[0040] In some specific embodiments, the mass ratio of the solid, menthol carbonate diester, flavor, glycerin and water is 100:1:1:25:25.

[0041] In some specific embodiments, the mass ratio of the solid, menthol carbonate diester, flavor, glycerin and water is 100:2:1.5:25:25.

[0042] In some specific embodiments, the mass ratio of the solid, menthol carbonate diester, flavor, glycerin and water is 100:3:2:27.5:27.5.

[0043] In some specific embodiments, the mass ratio of the solid, menthol carbonate diester, flavor, glycerin and water is 100:5:2.5:30:30.

[0044] The present invention does not limit the essence, and those known to those skilled in the art are sufficient, including but not limited to cocoa, lavender, cinnamon, cardamom, celery, fenugreek, black currant, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, peppermint oil, cinnamon, coriander, brandy, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander, clove extract (or clove substance) or coffee.

[0045] The structure of the menthol carbonate diester of the present invention is shown in formula (I).

[0046]

[0047] The preparation method of menthol carbonate diester of the present invention is as follows:

[0048] Menthol is dissolved in a solvent, and pyridine, di-tert-butyl dicarbonate or chloroformate are added. After the addition, the mixture is heated to room temperature and stirred for 2-12 hours until the substrate reacts completely. The solvent is evaporated, and petroleum ether and water are added to the residue, and the mixture is shaken to separate the liquids. The aqueous phase is extracted with petroleum ether, and the organic phases are combined, washed with water, dried over anhydrous sodium sulfate, and the solvent is evaporated to obtain menthol carbonate diester.

[0049] The mass ratio of menthol, pyridine and one of di-tert-butyl dicarbonate or chloroformate is 10 mmol: 11 mmol: 10.5 mmol.

[0050] In some preferred embodiments of the present invention, the preparation method of the menthol carbonate diester is as follows:

[0051] Preparation method: 10mmol menthol is dissolved in 50mL dichloromethane, cooled to 0℃, and 11mmol pyridine and 10.5mmol di-tert-butyl dicarbonate or chloroformate are added. After addition, the mixture is heated to room temperature and stirred for 2-12h until the substrate reacts completely. The solvent is evaporated, and petroleum ether and water are added to the residue, and the mixture is shaken to separate the liquids. The aqueous phase is extracted once with petroleum ether, and the organic phases are combined, washed twice with water, dried over anhydrous sodium sulfate, and the solvent is evaporated to obtain menthol carbonate diester.

[0052] The centrifugation of the present invention is centrifugation at 1000-2000 rpm for 5-10 minutes.

[0053] The mixture is prepared into thin slices; the method for preparing the thin slices is a roller pressing method. The present invention does not limit the specific operation of the roller pressing method, which is well known to those skilled in the art.

[0054] The slices are heated to obtain heated cigarettes; the heating is performed at 100 to 150° C. for 5 to 10 minutes.

[0055] The present invention provides the use of menthol carbonate diester represented by formula (I) as a latent aroma substance in heated cigarettes;

[0056]

[0057] The present invention provides a mint-flavored heated cigarette, which is prepared by the preparation method described in any one of the above technical solutions.

[0058] The heated cigarette of the present invention can be used to prepare different tobacco products, such as cigarettes, cigars and cigarillos, and can include combustion-type smoking products and heated smoking products.

[0059] According to some embodiments of the present disclosure, a tobacco extract sheet material capable of improving the persistence of the taste of a smoking article can be provided. The tobacco extract sheet can be prepared from a sheet liquid containing at least one tobacco extract solution and a sheet forming agent, and can be applied to a smoking article in various ways to enhance the persistence of the taste of the smoking article. Specifically, the tobacco extract sheet material can compensate for the lack of tobacco taste and the taste in the middle and late stages of suction by gradually releasing the flavor components contained therein during smoking. Therefore, the persistence of the taste of the smoking article can be ensured, and the smoking satisfaction of the smoker can be improved.

[0060] The present invention provides a method for preparing a mint-flavored heated cigarette, comprising the following steps: A) mixing tobacco powder and fiber and centrifuging to obtain a solid; B) loosening the solid, adding menthol carbonate diester, flavor, glycerin and water to mix, centrifuging to obtain a mixture; C) preparing the mixture into a sheet, heating to obtain a heated cigarette. The method for preparing a mint-flavored heated cigarette provided by the present invention uses menthol carbonate diester to replace menthol, so that the stability of the mint-flavored heated cigarette is better.

[0061] It should be understood that the order of steps or the order in which certain actions are performed is not important as long as the present invention remains operable. In addition, two or more steps or actions may be performed simultaneously.

[0062] The use of any and all examples or exemplary language, such as "for example" or "including", herein is intended only to better illustrate the invention and does not limit the scope of the invention unless otherwise claimed. No language in this specification should be construed as indicating that any non-claimed element is essential to the practice of the invention.

[0063] In addition, the numerical ranges and parameters used to define the present invention are approximate values, and the relevant values ​​in the specific embodiments have been presented as accurately as possible. However, any numerical value inherently inevitably contains standard deviations due to individual test methods. Therefore, unless otherwise expressly stated, it should be understood that all ranges, quantities, values ​​and percentages used in this disclosure are modified by "about". Here, "about" generally means that the actual value is within plus or minus 10%, 5%, 1% or 0.5% of a specific value or range.

[0064] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution, some or all of the steps can be executed in parallel or sequentially, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0065] Some cases are recorded in the embodiments and comparative examples of the present invention, wherein the embodiments show certain implementation modes of the present invention. However, this does not mean that the effects of the present invention can only be achieved in these cases.

[0066] In order to further illustrate the present invention, a heated cigarette and a preparation method thereof provided by the present invention are described in detail below in conjunction with embodiments.

[0067] Example 1

[0068] (1) Take 100 g and grind into 80 mesh particles;

[0069] (2) adding the tobacco powder prepared in step (1) to the fiber in a mass ratio of 1.5% and 1%, and centrifuging at 1000 rpm for 5 min;

[0070] (3) the solid obtained after centrifugation in step (2) is loosened into powder, 1% menthol carbonate diester, 1% flavor, 25% glycerol and 25% water are added in a mass ratio, and the mixture is centrifuged again at 1000 rpm for 5 min;

[0071] (4) The mixture after centrifugation in step (3) is made into thin slices by roller pressing, dried at 100° C. for 5 minutes, and cut into shreds to make heated cigarettes.

[0072] Example 2

[0073] (1) Take 100 g of tobacco leaves and grind them into 80 mesh particles;

[0074] (2) adding 1.5% and 2% fibers by mass to the tobacco powder prepared in step (1), and centrifuging at 1500 rpm for 5 min;

[0075] (3) the solid obtained after centrifugation in step (2) is loosened into powder, 2% menthol carbonate diester, 1.5% flavor, 25% glycerol and 25% water are added in a mass ratio, and the mixture is centrifuged again at 2000 rpm for 10 min;

[0076] (4) The mixture after centrifugation in step (3) is pressed into thin slices by a roller pressing method, dried at 120° C. for 5 min, and cut into shreds to form heated cigarettes.

[0077] Example 3

[0078] (1) Take 100 g of tobacco leaves and grind them into 80 mesh particles;

[0079] (2) adding 2% and 2% fibers in a mass ratio to the tobacco powder prepared in step (1), and centrifuging at 2000 rpm for 5 min;

[0080] (3) the solid obtained after centrifugation in step (2) is loosened into powder, 3% menthol carbonate diester, 2% flavor, 27.5% glycerol and 27.5% water are added in a mass ratio, and the mixture is centrifuged again at 2000 rpm for 10 min;

[0081] (4) The mixture after centrifugation in step (3) is pressed into thin slices by a roller pressing method, dried at 150° C. for 5 min, and cut into shreds to form heated cigarettes.

[0082] Example 4

[0083] (1) Take 100 g of tobacco leaves and grind them into 80 mesh particles;

[0084] (2) adding 2% and 1.5% fibers by weight to the tobacco powder prepared in step (1), and centrifuging at 1500 rpm for 7.5 min;

[0085] (3) the solid obtained after centrifugation in step (2) is loosened into powder, 5% menthol carbonate diester, 2.5% flavor, 30% glycerol and 30% water are added in a mass ratio, and the mixture is centrifuged again at 1000-2000 rpm for 10 min;

[0086] (4) The mixture after centrifugation in step (3) is pressed into thin slices by a roller pressing method, dried at 150° C. for 5 min, and cut into shreds to form heated cigarettes.

[0087] The present invention uses menthol carbonate diester to replace menthol to develop a mint flavor heated cigarette, adds menthol and menthol carbonate diester, and tests the release amount of menthol in the heated cigarette after 0 days, 15 days, 30 days and 60 days of storage (see Table 1).

[0088] Table 1 Comparison of menthol release in heated cigarettes

[0089]

[0090] The invention uses menthol carbonate diester to replace menthol to develop a mint flavor heated cigarette. Compared with adding menthol, adding menthol diester is more stable during the storage process of the heated cigarette.

[0091] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing a mint-flavored heated cigarette, characterized in that: The steps include: A) mixing tobacco powder and fibers and centrifuging to obtain a solid; B) loosening the solid, adding menthol carbonate diester, essence, glycerin and water to mix, and centrifuging to obtain a mixture; C) preparing the mixture into thin sheets, and heating them to obtain heated cigarettes.

2. The preparation method according to claim 1, characterized in that: Step A) The particle size of the smoke powder is 80-100 meshes.

3. The preparation method according to claim 1, characterized in that: The fiber added in step A) is 1.0 wt% to 2 wt% of the tobacco leaf.

4. The preparation method according to claim 1, characterized in that: The centrifugation in step A) is performed at 1000-2000 rpm for 5-10 min.

5. The preparation method according to claim 1, characterized in that: In step B), the mass ratio of the solid, menthol carbonate diester, essence, glycerin and water is 100:(1-5):(1-2.5):(25-30):(25-30).

6. The preparation method according to claim 1, characterized in that: The structure of the menthol carbonate diester is shown in formula (I); 7. The preparation method according to claim 1, characterized in that: Step B) the centrifugation is carried out at 1000-2000 rpm for 5-10 min.

8. The preparation method according to claim 1, characterized in that: Step C) The method for preparing the thin slices is roller pressing; the heating is baking at 100-150° C. for 5-10 minutes.

9. Use of menthol carbonate diester represented by formula (I) as a latent aroma substance in heated cigarettes; 10. A mint flavored heated cigarette, characterized in that: The preparation is obtained by the preparation method described in any one of claims 1 to 8.

Images