Preparation method of flavor micro-powder two-dimensional phase change array and application thereof in heated cigarettes

Abstract

The application discloses a preparation method of a spice micro-powder two-dimensional phase change array and application of the array in a heated cigarette. The preparation method comprises the following steps: preparing natural plant spice micro-powder through morphology control crushing and gravity sedimentation technology; forming a two-dimensional spice array by using electrostatic targeting transfer and spice micro-powder dot array program control technology; preparing a phase change material by using variable-temperature co-crystallization technology and combining the phase change material with the spice micro-powder; and arranging the obtained solid spice micro-powder two-dimensional phase change array in a cooling section or a heating section of a cigarette according to a heat flow field design requirement of the heated cigarette to form a cigarette of the heated cigarette. The natural plant spice micro-powder two-dimensional phase change array establishes a new solid spice combination and modification technology, forms a new aroma release rule, and can release aroma components along with a temperature change gradient. When the array is applied in the heated cigarette, the main stream smoke temperature can be significantly reduced, the level of the spice can be enhanced, and a new sensory experience can be provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cigarette flavor development, in particular to a preparation method of a flavor micro-powder two-dimensional phase change array and its application in a heated cigarette. BACKGROUND

[0002] Cigarette flavor is a kind of flavor compound added in cigarettes to improve the state of smoke or give cigarettes special flavor characteristics. Cigarette flavor is different from daily-use flavor in some characteristics. For example, cigarette flavor often participates in cigarette combustion and releases aroma components or generates aroma components by cracking at high temperatures. Cigarette flavor can be classified into synthetic flavor, natural flavor, and combination of synthetic and natural flavor according to components. Synthetic flavor is mainly some organic compound monomers synthesized or extracted by industry, which has special flavor characteristics. Natural flavor refers to a flavor extracted and enriched from aromatic tissues of natural animals and plants. In order to achieve special taste and flavor characteristics, synthetic flavor is often combined with natural flavor to form a flavor formula.

[0003] The existing development of cigarette flavor generally adopts a simple mixing method, i.e. mixing different flavors according to a certain proportion, diluting with a proper solvent, and then adding to cigarette tobacco or auxiliary materials. This preparation method causes components of flavors to overlap and mix, which easily leads to uncoordinated flavor and unobvious characteristics of monomer flavor. Meanwhile, the interaction between different flavors is ignored, which easily causes chemical reaction, flavor interference, and lack of layering.

[0004] In addition, there is little report on the development of cigarette flavor with both flavor enhancement and gradient temperature reduction. The existing phase change temperature reduction and flavor enhancement material generally adopts a simple mixing method, i.e. mechanically mixing phase change material and flavor. This combination method is difficult to realize gradient temperature reduction of mainstream smoke and gradient release of aroma components according to the gradient change of mainstream smoke temperature. Meanwhile, the simple mixing method can only provide single olfactory sensory experience, and it is difficult to achieve multi-level flavor experience.

[0005] Therefore, in order to overcome the technical defects of the existing development of cigarette flavor, it is urgent to develop a new type of cigarette flavor development technology. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a preparation method of a flavor micro-powder two-dimensional phase change array and its application in a heated cigarette, which solves the above defects of the prior art.

[0007] The technical problem to be solved by the present application is solved by the following technical scheme:

[0008] A preparation method of a flavor micro-powder (cigarette solid flavor micro-powder) two-dimensional phase change array, comprising the following steps:

[0009] Step (1): dry natural plant spices are subjected to ultrafine grinding or ball milling, and then the powder with a larger particle size is removed by gravity sedimentation method, and the ultrafine powder with a particle size of 1-10 microns is screened out, to obtain spice micro powder;

[0010] Step (2): the spice micro powder is subjected to fluidization treatment, and then the spice micro powder is charged by corona discharge; the charged spice micro powder is transferred to the cooling material substrate under the target action of electric field force, and adheres to the cooling material substrate with phase change film, to form a spice dot array;

[0011] Step (3): the distribution of zero potential points of the cooling material substrate is controlled to break and combine, so as to change the attachment points of the spice micro powder, and form a two-dimensional array of spice micro powder;

[0012] Step (4): a layer of phase change cooling film is coated on the surface of the two-dimensional array of spice micro powder, and is rolled or folded to become part of a heated cigarette.

[0013] Preferably, in step (1), the natural plant spices are selected from one or more of natural aromatic plant tissues such as fenugreek seeds, Chinese rose flowers, citrus peels, clove buds, and cinnamon bark, star anise, vanilla beans, cocoa beans, coffee beans, and other natural aromatic plants rich in floral, fruity, bean, herbal, and spicy aromas.

[0014] Specifically, different natural plant spices are combined or compounded according to the principle of harmony and modification of flavor, and then distributed in different rows, columns, or patterns.

[0015] Preferably, the specific combination modes include but are not limited to ① fenugreek seed and Chinese rose flower micro powder; ② clove bud and vanilla bean micro powder; ③ cocoa bean and coffee bean micro powder; ④ citrus peel and vanilla bean micro powder; ⑤ citrus peel, Chinese rose flower, and vanilla bean micro powder; ⑥ citrus peel, vanilla bean, and cocoa bean micro powder, etc.

[0016] Preferably, the selected natural plant spices have rich natural aroma, and the structure includes but is not limited to original plant tissues, processed products, or any roasted, baked, fermented, or enzymatically processed products.

[0017] Preferably, in step (2), the cooling material is polylactic acid ester with a thickness of 50 microns.

[0018] Preferably, in step (4), the phase change film is refined beeswax or tobacco wax with a thickness of 10-30 microns; the phase change cooling film is refined beeswax, tobacco wax, or polyethylene glycol with a thickness of 10-30 microns.

[0019] Further, the thickness of all films can be linearly gradient distributed axially or radially along the attached material to obtain a phase transition gradient change when heated, thereby causing a personalized sensory experience, specifically according to the ratio of the heating rate and the phase transition rate.

[0020] Preferably, the ionization voltage in step (2) is 50-100KV; the motion trajectory of the charged particle beam in step (3) is controlled by a program, thereby realizing a two-dimensional array of point-shaped or strip-shaped perfume micro-powder with different shapes, thicknesses, gradients, and arrangement sequences, with an array thickness of 1-50 microns and an array spacing of 100-5000 microns.

[0021] Specifically, the particle beam moves under the control of an electric field constructed outside the cooling material by a corona device, with zero-potential points densely distributed on a two-dimensional plane on the side of the cooling material, and the connection and disconnection are controlled by a program.

[0022] Preferably, the transverse strip array is conducive to forming a personalized fragrance release; the radial gradient distribution is conducive to forming a uniform and stable release.

[0023] Preferably, the phase change film and the phase change cooling film, the phase change film has high viscosity and thermal rheology, and the molecular chain length is between C18-C23; the phase change cooling film has high specific heat capacity, and the molecular chain length is between C25-C34.

[0024] Preferably, the phase change film and the phase change cooling film are obtained by a temperature-variable co-crystallization method.

[0025] Specifically, the temperature-variable co-crystallization method, the phase change material mixture is heated to a molten state, and then an appropriate amount of solvent is added for dissolution; the solution temperature is slowly reduced at a speed of 1-5℃ / min; the phase change material is co-crystallized and precipitated; after centrifugation and drying, phase change materials with different specific heat capacities, glass transition temperatures, and adhesion properties are obtained.

[0026] Preferably, the phase transition temperature of the phase change film is controlled between 20-55℃, and the phase transition temperature of the phase change cooling film is controlled between 55-85℃, and the complete phase transition temperature is controlled by the thickness of the film.

[0027] A two-dimensional phase change array of perfume micro-powder includes a cooling material layer, the surface of the cooling material layer is coated with a phase change film, the phase change film is provided with a perfume array, and the upper surface of the perfume array is coated with a phase change cooling film.

[0028] Preferably, the application of the solid tobacco perfume micro-powder two-dimensional phase change array in heated cigarettes can adopt the following two methods:

[0029] (1) In the application of the temperature drop section of the cigarette, the solid flavor micro-powder two-dimensional phase change array is folded and distributed in the temperature drop section of the cigarette, and the flavor coating layer adopts the layout mode of the reverse side facing the high-temperature mainstream smoke.

[0030] (2) In the application of the heating section of the cigarette, the solid flavor micro-powder two-dimensional phase change array is rolled and distributed in the heating section of the cigarette, and the flavor coating layer adopts the layout mode of the front side facing the heating center.

[0031] According to the relevant requirements of the tobacco industry standard "Tobacco and Tobacco Products Sensory Evaluation Method" (YC / T 138), the cigarette is subjected to sensory evaluation, and the results show that the solid flavor micro-powder two-dimensional phase change array has good sensory characteristics in the cigarette, and the flavor level is obvious, compared with the blank control, the problem of mixed flavor and unclear level of traditional flavor essence is avoided.

[0032] The above technical scheme of the present application has the following beneficial effects:

[0033] (1) Avoid the problem of incoordination of flavor and single flavor characteristics caused by the composition of flavor and flavor.

[0034] (2) Gradient phase change release and orderly arrangement, which not only meets the cooling demand but also is beneficial to the individualization and uniform release of solid plant flavor, and is beneficial to the "harmony" of the spatial distribution of solid flavor. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a schematic diagram of the solid flavor micro-powder two-dimensional phase change array (dot-shaped and strip-shaped) of the present application.

[0036] Among them: 1-temperature drop material layer, 2-phase change film, 3-flavor array, 4-phase change cooling film. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement, numerical expression and numerical value of the components and steps set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated.

[0038] A preparation method of a solid flavor micro-powder (smoking solid flavor) two-dimensional phase change array is to combine a heating cigarette cooling material, a natural flavor plant micro-powder and a phase change material, and form an orderly natural flavor plant micro-powder two-dimensional phase change array through fluidization ionization, targeted transfer process and program control.

[0039] A solid flavor micro-powder (solid flavor for cigarettes) two-dimensional phase change array, the solid flavor micro-powder two-dimensional phase change array comprising a cooling material layer 1, the surface of the cooling material layer 1 being sprayed with a phase change film 2, the phase change film 2 being provided with a solid flavor array 3, the upper surface of the solid flavor array 3 being sprayed with a phase change cooling film 4. The shape of the solid flavor array 3 can be any shape pattern such as a dot or a strip.

[0040] The solid flavor micro-powder two-dimensional phase change array is applied to a heated cigarette, and is used in the cooling section or the heating section of a heated cigarette.

[0041] Example 1 Trigonella foenum-graecum L. and Rosa rugosa Thunb. micro-powder two-dimensional phase change array

[0042] Preparation of the Trigonella foenum-graecum L. and Rosa rugosa Thunb. micro-powder two-dimensional phase change array:

[0043] 1) Dry natural flavor Trigonella foenum-graecum L. and Rosa rugosa Thunb. aromatic tissues are first processed into 1 mm particles, and then the flavor particles are pulverized into 5 micron flavor micro-powder by using an ultracentrifugal pulverization method for 20 minutes. Then, a gravity sedimentation method is used to remove large-particle powders, and 1-5 micron micro-powder is obtained.

[0044] 2) The flavor micro-powder is placed in an air flow field fluidization device for fluidization treatment. When the micro-powder forms a single-particle linear fluidization, the flavor micro-powder is electrified by corona discharge. The electrified flavor micro-powder is directed to the cooling material substrate point by point under the target action of the electric field force, and adheres to the cooling material substrate 1 with the phase change film 2, forming a flavor dot array.

[0045] 3) The distribution of the zero potential points of the cooling material substrate is controlled by a program to break and combine, and the adhesion points of the flavor micro-powder are changed directionally to form a flavor micro-powder two-dimensional array.

[0046] 4) A layer of phase change cooling film 4 is coated on the surface of the flavor micro-powder two-dimensional array, and is folded into a cooling and flavoring section of a heated cigarette.

[0047] The flavor micro-powder two-dimensional array adopts a horizontal stripe layout, and the stripes are arranged in the axial direction of the cooling material substrate. The stripe width is 1000 microns, the thickness is 50 microns, the interval is 3000 microns, and the two kinds of micro-powder are alternately distributed.

[0048] The cooling material is polylactate with a thickness of 50 microns; the phase change film 2 is refined beeswax obtained by temperature change co-crystallization, with a thickness of 10 microns; and the phase change cooling film 4 is refined beeswax obtained by temperature change co-crystallization, with a thickness of 20 microns.

[0049] The phase change film 2 and the phase change cooling film 4 are prepared from commercially available beeswax. Specifically, the commercially available beeswax is heated to 90℃ to be melted, and then a proper amount of ethanol or ethyl acetate is added to dissolve the beeswax. When a homogeneous solution is formed, the solution is slowly cooled at a speed of 5℃ / min. When the temperature is lowered to 50℃, the obtained solid precipitate is centrifuged and dried to obtain the phase change cooling film 4. The temperature is continuously lowered to room temperature at a speed of 1℃ / min. The obtained solid precipitate is centrifuged and dried to obtain the phase change film 2. The phase change temperature of the phase change film is between 20-55℃, and the phase change temperature of the phase change cooling film is between 55-85℃.

[0050] The above-mentioned solid flavor micro-powder two-dimensional phase change array is folded to form a cooling section of a heated cigarette. The flavor coating layer is arranged in a mode of facing away from the high-temperature mainstream smoke, forming a cooling and flavoring section of the heated cigarette, and then the cooling and flavoring section is combined to form a cigarette of the heated cigarette.

[0051] The sensory evaluation results show that the above-mentioned solid flavor micro-powder two-dimensional phase change array has good sensory characteristics when applied to the heated cigarette. The gradient cooling and gradient release effect is remarkable. The Trigonella foenum-graecum seed and Citrus peel flavors have obvious layering and less interference.

[0052] Example 2: Trigonella foenum-graecum seed and Citrus peel micro-powder two-dimensional phase change array

[0053] Preparation of the Trigonella foenum-graecum seed and Citrus peel micro-powder two-dimensional phase change array:

[0054] 1) The dry natural flavor Trigonella foenum-graecum seed and Citrus peel oil-coated aromatic tissue is first processed into particles of about 1 mm, and then the flavor particles are pulverized into flavor micro-powder of about 5 microns by using the ultracentrifugal pulverization method for 20 minutes. Then, the large-particle-size powder is removed by using the gravity sedimentation method to obtain the micro-powder of 1-5 microns.

[0055] 2) The flavor micro-powder is placed in an air flow field fluidization device for fluidization treatment. When the micro-powder forms a single-particle linear fluidization, the flavor micro-powder is electrified by corona discharge. The electrified flavor micro-powder is directed to the cooling material substrate with phase change film 2 under the target action of electric field force, and adheres to the cooling material substrate 1 with the phase change film 2 to form a flavor dot array.

[0056] 3) The distribution of zero-potential points of the cooling material substrate is controlled by a program to break and combine, so as to change the adhesion points of the flavor micro-powder and form a two-dimensional array of flavor micro-powder.

[0057] 4) A layer of phase change cooling film 4 is coated on the surface of the two-dimensional array of flavor micro-powder, and is folded to form a cooling and flavoring section of a heated cigarette.

[0058] The two-dimensional array of flavor micro-powder adopts a horizontal stripe layout, and the stripes are arranged in the axial direction of the cooling material substrate. The stripe width is 1000 microns, the thickness is 50 microns, the interval is 5000 microns, and the two kinds of micro-powder are alternately distributed.

[0059] The cooling material is polylactate with a thickness of 50 microns; the phase change film 2 is tobacco wax obtained by temperature-variable co-crystallization with a thickness of 10 microns; and the phase change cooling film 4 is tobacco wax obtained by temperature-variable co-crystallization with a thickness of 20 microns.

[0060] The phase change film 2 and the phase change cooling film 4 are refined from supercritical extraction tobacco wax. Specifically, the tobacco wax is heated to 90℃ for melting, and then a proper amount of ethanol or ethyl acetate is added for dissolution. When a homogeneous solution is formed, the temperature is slowly reduced at a speed of 5℃ / min, and when it is reduced to 40℃, the obtained solid precipitate is centrifuged and dried to obtain the phase change cooling film 4. Continue to reduce the temperature to room temperature at a speed of 1℃ / min, centrifuge and dry the obtained solid precipitate to obtain the phase change film 2. The phase change temperature of the phase change film is between 20-45℃, and the phase change temperature of the phase change cooling film is between 55-75℃.

[0061] Fold the above-mentioned solid flavor micro-powder two-dimensional phase change array into a heating cigarette cooling section, and the flavor coating layer adopts a layout mode of the reverse side facing the high-temperature mainstream smoke, to form a heating cigarette cooling and flavoring section, and to form a heating cigarette cigarette.

[0062] The sensory evaluation results show that the above-mentioned solid flavor micro-powder two-dimensional phase change array applied in the heating cigarette has good sensory characteristics, and the gradient cooling and gradient release effect is remarkable, the level of the fenugreek seed aroma and the citrus peel aroma is obvious, and the aroma interference is small.

[0063] Example 3 Vanilla bean, cocoa bean, and citrus peel micro-powder two-dimensional phase change array

[0064] Preparation of the vanilla bean, cocoa bean, and citrus peel micro-powder two-dimensional phase change array:

[0065] 1) The dry natural flavors of fenugreek seeds and citrus peel oil-coated aromatic organizations are first processed into particles of about 1 mm, and then the flavor particles are pulverized into flavor micro-powder of about 5 microns by using supercentrifugal pulverization method for 20 minutes. Then, the large-particle-size powder is removed by using gravity sedimentation method to obtain 1-5 micron micro-powder.

[0066] 2) The flavor micro-powder is placed in an air flow field fluidization device for fluidization treatment, and when the micro-powder forms a single-particle linear fluidization, the flavor micro-powder is electrified by corona discharge. The electrified flavor micro-powder is directed to the cooling material substrate with phase change film 2 under the target action of electric field force, and adheres to the cooling material substrate 1 with phase change film 2 to form a flavor dot array.

[0067] 3) The distribution of the zero-potential point of the cooling material substrate is controlled to be broken and connected, so as to direct the adhesion point of the flavor micro-powder to form a flavor micro-powder two-dimensional array.

[0068] 4) a layer of phase change cooling film 4 is coated on the surface of the solid flavor micro-powder two-dimensional array, and is folded to form a cooling and flavoring section of a heated cigarette.

[0069] The solid flavor micro-powder two-dimensional array adopts a circular dot array layout, and the stripes are arranged along the axial direction of the cooling material base. The stripe width is 1000 microns, the thickness is 50 microns, the interval is 5000 microns, and the three kinds of micro-powders are alternately distributed in the transverse direction.

[0070] The cooling material is polylactate, and the thickness is 50 microns; the phase change film 2 is tobacco wax obtained by a temperature change co-crystallization method, and the thickness is 10 microns; and the phase change cooling film 4 is tobacco wax obtained by a temperature change co-crystallization method, and the thickness is 20 microns.

[0071] The phase change film 2 and the phase change cooling film 4 are refined from tobacco wax extracted by supercritical extraction. Specifically, the tobacco wax is heated to 90℃ for melting, and then an appropriate amount of ethanol or ethyl acetate is added for dissolution. When a homogeneous solution is formed, the temperature is slowly lowered at a speed of 1℃ / min. When the temperature is lowered to 50℃, the obtained solid precipitate is centrifuged and dried to obtain the phase change cooling film 4. Continue to lower the temperature to room temperature at a speed of 5℃ / min, centrifuge and dry the obtained solid precipitate to obtain the phase change film 2. The phase change temperature of the phase change film is between 20-50℃, and the phase change temperature of the phase change cooling film is between 55-85℃.

[0072] The above-mentioned solid flavor micro-powder two-dimensional phase change array for cigarettes is wrapped with the tobacco core and reconstituted tobacco leaf to form a heating section of a heated cigarette during the formation of a cigarette. The flavor coating layer adopts a layout mode of facing the high-temperature heating center, forming a phase change flavoring section of a heated cigarette, and is compounded to form a heated cigarette.

[0073] The sensory evaluation results show that the above-mentioned solid flavor micro-powder two-dimensional phase change array for cigarettes has good sensory characteristics in a heated cigarette, and has significant gradient cooling and gradient release effects. The characteristics of each component are obvious, the flavor is rich and has a sense of hierarchy, and the nutty and milky sweet flavors are prominent.

[0074] Although the present application has been disclosed as above with examples, it is not intended to limit the present application, and any person skilled in the art can make various selections and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is defined by the claims and their equivalent forms.

Claims

1. A method of making an array of flavor micro-powder two-dimensional phase transitions, characterized by, It comprises the following steps: Step (1): dry natural plant spices are subjected to ultrafine grinding or ball milling, and then the powder with a particle size of 1-10 microns is screened out by gravity sedimentation method to obtain spice micro-powder; Step (2): the spice micro-powder is subjected to fluidization treatment, and then the spice micro-powder is charged by corona discharge; the charged spice micro-powder is transferred to the cooling material substrate under the target action of electric field force, and adheres to the cooling material substrate with a phase change film to form a spice dot array; Step (3): the distribution of zero potential points of the cooling material substrate is controlled by program to change the attachment points of the spice micro-powder and form a two-dimensional array of spice micro-powder; Step (4): a layer of phase change cooling film is coated on the surface of the two-dimensional array of spice micro-powder, and is rolled or folded to become part of a heated cigarette; The cooling material is polylactate with a thickness of 50 microns; the phase change film is refined beeswax or tobacco wax with a thickness of 10-30 microns; the phase change cooling film is refined beeswax, tobacco wax or polyethylene glycol with a thickness of 10-30 microns; The ionization voltage in step (2) is 50-100 KV; the motion trajectory of the charged particle beam in step (3) is controlled by program to realize different shapes, thicknesses, gradients and arrangement sequences of the point or strip two-dimensional spice micro-powder array, the array thickness is 1-50 microns, and the array spacing is 100-5000 microns; The phase change film has high adhesion and thermal rheological properties, and the molecular chain length is between C18-C23; the phase change cooling film has high specific heat capacity, and the molecular chain length is between C25-C34.

2. The method of claim 1, wherein the method further comprises, The natural plant spices are selected from one or more of fenugreek seeds, Chinese rose flowers, citrus peels, clove buds and cinnamon bark, star anise, vanilla beans, cocoa beans, and coffee beans.

3. The method of claim 1, wherein the method further comprises, The phase change film and the phase change cooling film are obtained by temperature-variable co-crystallization method.

4. A flavor micro powder two-dimensional phase array, characterized by, The two-dimensional phase change array of spice micro-powder is prepared according to the preparation method of the two-dimensional phase change array of spice micro-powder according to any one of claims 1-3, the two-dimensional phase change array of spice micro-powder comprises a cooling material layer, the surface of the cooling material layer is coated with a phase change film, the phase change film is provided with a spice array, and the upper surface of the spice array is coated with a phase change cooling film.

5. The application of the two-dimensional phase change array of spice micro-powder prepared according to the preparation method of the two-dimensional phase change array of spice micro-powder according to any one of claims 1-3 in a heated cigarette.

6. Use according to claim 5, characterized in that, The spice coating layer is applied to form a heated cigarette, and the layout mode of the reverse / forward surface facing the heat flow or the heating core is adopted according to the need of the heat flow field of the heated cigarette.

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