阅读说明：本技术 一种含气颗粒、其制备方法及用途 (Gas-containing particles, preparation method and application thereof ) 是由 余婷婷 王旭 王浩 岳保山 余振华 詹建波 余耀 于 2021-03-10 设计创作，主要内容包括：本发明公开了一种含气颗粒,所述含气颗粒为蜂窝状,其容积密度为0.05-0.5g/cm～3,所述含气颗粒中含有不小于0.05ml/g的密闭性小孔。本发明还公开了所述含气颗粒的制备方法及用于烟滤棒中香气迸发的用途。本发明的含气颗粒遇水溶解发泡,瞬间迸发大量香气。(The invention discloses gas-containing particles, which are honeycomb-shaped, and the bulk density of the gas-containing particles is 0.05-0.5g/cm 3 And the gas-containing particles contain airtight pores of not less than 0.05 ml/g. The invention also discloses a preparation method of the gas-containing particles and application of the gas-containing particles in aroma eruption in a cigarette filter stick. The gas-containing particles of the present invention are dissolved and foamed in water, and instantaneously burst a large amount of fragrance.)

1. The gas-containing particles are honeycomb-shaped, and the bulk density of the gas-containing particles is 0.05-0.5g/cm³And the gas-containing particles contain airtight pores of not less than 0.05 ml/g.

2. The gas-containing particle of claim 1, wherein the particle is an aroma particle, and the aroma particle is one or more of a coffee particle, a tea extract particle, or a fruit flavor particle.

3. The gas-containing particles of claim 1, wherein the flavor particles are food grade.

4. A method for preparing gas-containing particles is characterized by comprising the following steps:

putting perfume particles into a pressurizing container, and pressurizing at normal temperature;

secondly, heating the pressurized container in the first step and keeping the temperature for a period of time;

thirdly, cooling the pressurized container in the second step to room temperature under the pressure;

fourthly, the pressure of the pressurized container in the third step is released, and the spice particles are taken out;

fifthly, screening the spice particles obtained in the step (iv).

5. The method as claimed in claim 4, wherein the flavor particles used in step (r) are one or more of food grade coffee particles, tea extract particles or fruit flavor particles.

6. The method as claimed in claim 4, wherein the gas used in step (i) is food grade nitrogen, oxygen or carbon dioxide gas.

7. The method according to claim 4, characterized in that the pressure of step (i) is above 1 MPa.

8. The method of claim 4, wherein the temperature of step (II) is raised to above 100 ℃ for a holding time of above 30 mins.

9. The method according to claim 4, wherein said room temperature in step (iii) is 40 ℃ or lower.

10. Use of the gas-containing particles according to any one of claims 1 to 3 for aroma bursts in a cigarette filter rod.

Technical Field

The invention belongs to the field of new materials for cigarettes, and particularly relates to gas-containing particles which are dissolved in water and instantly release a large amount of aroma substances, and a preparation method and application thereof.

Background

The filter stick fragrance-carrying material in the prior art mainly adopts filter stick bead blasting, filter stick gel, filter stick fragrance threads and the like, and the cigarette material mainly has the function of holding fragrance of cigarettes in the smoking process. These fragrance-carrying materials do not have the effect of instantaneous burst of fragrance, and cannot release a large amount of fragrance at the first time, thereby achieving the purpose of instantaneous attraction to consumers. The materials in the prior art need to add foaming agents when meeting water, the foaming agents generally need to add sodium bicarbonate and organic acid into raw materials to achieve a foaming effect and simultaneously emit fragrant substances, the method needs to add substances except particles per se, so that the disadvantages of increased cost and higher process requirements are caused, and the sodium bicarbonate and the organic acid in the foaming agents occupy larger volume and are not suitable for being used in cigarettes.

The present invention has been made to solve the above problems.

Disclosure of Invention

The invention relates to a porous honeycomb-shaped gas-containing particle which is formed by pasting soluble perfume particles at high temperature by changing the physical structure of the perfume particles. The gas-containing granules can disintegrate instantly when contacting with water and can emit fragrance. The gas-containing particles are used in the cigarette filter stick, and in the process that the gas in the gas-containing particle pores is dissolved in water, the fragrant substances carrying the spices enter the smoke to supplement the smoke and the fragrance.

The technical scheme of the invention is as follows:

the invention discloses a gas-containing particle, which is honeycomb-shaped and has the volume density of 0.05-0.5g/cm³And the gas-containing particles contain airtight pores of not less than 0.05 ml/g.

Preferably, the particles are perfume particles, and the perfume particles are one or more of coffee particles, tea extract particles or fruit essence perfume particles.

Preferably, the flavour particles are food grade.

The second aspect of the invention discloses a preparation method of gas-containing particles, which comprises the following steps:

putting perfume particles into a pressurizing container, and pressurizing at normal temperature;

secondly, heating the pressurized container in the first step and keeping the temperature for a period of time;

thirdly, cooling the pressurized container in the second step to room temperature under the pressure;

fourthly, the pressure of the pressurized container in the third step is released, and the spice particles are taken out;

fifthly, screening the spice particles obtained in the step (iv).

Preferably, the flavor particles used in step (i) are one or more of food-grade coffee particles, tea extract particles or fruit flavor particles.

Preferably, the gas used in step (r) is food grade nitrogen, oxygen or carbon dioxide gas.

Preferably, the pressure of step (i) is above 1 MPa.

Preferably, the temperature of the second step is raised to more than 100 ℃ and the holding time is more than 30 mins.

Preferably, the temperature of the room temperature in the step (c) is below 40 ℃.

The third aspect of the invention discloses the application of the gas-containing particles in the aroma burst in the cigarette filter stick.

The invention has the beneficial effects that:

1. the gas-containing particles do not contain additional adhesive and foaming agent, can be dissolved and foamed when meeting water, and instantly and rapidly emit a large amount of fragrance.

2. The preparation method of the gas-containing particles is simple and low in cost.

3. The gas-containing particles are prepared from food-grade raw materials, and when the particles are used in cigarette filter sticks, the aroma instantly bursts when the particles meet water, and a large amount of aroma is released at the first time, so that the aim of instantly attracting consumers is fulfilled.

Drawings

FIG. 1 is an SEM image of non-aerated coffee granules of example 1.

Fig. 2 is an SEM image of airborne particles of coffee of example 1.

FIG. 3 is a diagram of an apparatus for preparing gas-containing particles.

Reference numerals: 1. a pressurized container; 2. a nitrogen gas cylinder; 3. and (4) a valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available by purchase.

Example 1: preparation of gas-containing coffee particles

The preparation of the airborne coffee particles of this example uses the apparatus shown in figure 3, with the following steps:

firstly, putting original coffee particles into a pressurizing container 1, and pressurizing to 1.5MPa at normal temperature; the original coffee particles are shown in fig. 1;

secondly, heating the pressurized container to 140 ℃ and keeping the temperature for one hour;

thirdly, cooling the pressurized container obtained in the second step to 20 ℃ under the pressure;

fourthly, slowly releasing the pressure of the pressurized container in the third step, and taking out coffee particles;

fifthly, screening the coffee particles obtained in the step (iv) according to the requirement to obtain the coffee gas-containing particles, as shown in figure 2. The obtained gas-containing coffee granules have a bulk density of 0.10g/cm³And contained 0.15ml/g of closed pores. The particles can produce a foam volume of 10cm³/g。

The principle and the steps for testing the bulk density and the leak tightness of the pores are the prior art and are as follows:

the weight and volume of the particles were measured by helium pycnometer (AccuPyc 1330Micromeritics), and the bulk density (g/cm) was obtained by dividing the weight by the volume³). The particle volume includes any air-tight void volume present in the particles, not including the interstitial spaces between particlesThe volume and any void volume present in the particles that is open to the atmosphere. The volume of the closed pores in the particles is obtained by measuring the skeleton density of the particles after removing all internal gaps of the particles or opening the particles to the atmosphere, wherein the skeleton density is also the real density of the single solid density of the particles, and is called the real density g/cm for short³. Pore volume of pore³The/g) is determined by subtracting the reciprocal true density from the reciprocal skeleton density. The closed pore volume can also be characterized by the volume percentage of closed pores contained in the particles.

Corrected according to the room temperature and the pressure, the gas amount released by the gas-containing granules of the coffee is 10cm per gram of the granules³Left and right.

Example 2: preparation of fruit essence containing qi granule

The preparation of the fruit juice gas-containing particles of the invention also uses the device as shown in figure 3, and comprises the following steps:

putting original fruit and pearl particles into a pressurizing container 1, and pressurizing to 2MPa at normal temperature;

secondly, heating the pressurized container to 120 ℃ and keeping the temperature for one hour;

thirdly, cooling the pressurized container obtained in the second step to 20 ℃ under the pressure;

fourthly, slowly releasing the pressure of the pressurized container in the third step, and taking out the fruit and pearl particles;

fifthly, screening the particles of the fruit juice obtained in the step (iv) according to the requirement to obtain the particles of the fruit juice containing gas. The obtained fruit juice gas-containing granule has a bulk density of 0.11g/cm³And contains 0.12ml/g of closed pores.

Corrected according to the room temperature and the pressure, the gas quantity released by the fruit juice gas-containing particles is 8cm per gram of the particles³Left and right.

Example 3: preparation of tea extract gas-containing granules

The preparation of the tea extract gas-containing granules of the present example also uses the apparatus shown in fig. 3, and the steps are as follows:

putting original tea extract particles into a pressurizing container 1, and pressurizing to 3MPa at normal temperature;

secondly, heating the pressurized container to 120 ℃ and keeping the temperature for one hour;

thirdly, cooling the pressurized container obtained in the second step to 20 ℃ under the pressure;

fourthly, slowly releasing the pressure of the pressurized container in the third step, and taking out the extract particles of the tea extract;

fifthly, screening the tea extract particles obtained in the step IV to obtain the gas-containing tea extract particles. The volume density of the gas-containing particles of the tea extract obtained by the test is 0.15g/cm³Which contains 0.09ml/g of closed pores.

Correcting according to room temperature and pressure to obtain extract containing tea extract with gas amount of 5 cm/g granule³Left and right.

Example 4: preparation of cigarette filter stick containing coffee gas particles and smoking evaluation result of cigarette

Weighing 20g of gas-containing particles of 40-60 meshes of coffee obtained in example 1;

secondly, adding the air-containing coffee particles dried in the step I into an acetate fiber tow, and uniformly adding the air-containing coffee particles into a cigarette filter stick according to the addition amount of 0.4mg/mm acetate fibers to prepare a particle filter stick. The granular filter stick and a filter stick with a built-in sealing water-containing firmware are compounded into a binary composite filter stick according to the thickness of 15mm +15 mm.

And thirdly, applying the binary composite filter stick obtained in the second step to cigarettes.

When in suction, a consumer needs to pinch the water-containing firmware in the filter stick, the coffee gas-containing particles contact with water pinched from the firmware and immediately burst fragrance, and the consumer can immediately feel strong coffee fragrance. Meanwhile, when a consumer sucks, the coffee fragrance supplements the tobacco fragrance, and the fragrance during sucking is enriched.

The cigarette with the filter stick containing the gas particles is subjected to smoking evaluation by professional sensory evaluation smokers and is compared with common cigarettes. The results of the smoke panel are shown in the following table:

example 5: preparation of cigarette filter stick containing fruit juice gas particles and smoking evaluation result

The preparation of the cigarette filter stick by using the 30-50-mesh fruit juice gas-containing particles obtained in the example 2 is the same as that of the example 4. The results of the smoke panel are shown in the following table:

example 6: preparation and smoking evaluation of filter stick containing air particles of tea extract

The preparation of the cigarette filter stick by using the 20-40 mesh tea extract gas-containing particles obtained in the example 3 is the same as that of the example 4. The results of the smoke panel are shown in the following table:

the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.