Inorganic aluminum silicate fiber-tobacco extract composite, preparation thereof and use thereof in a smoking cigarette

Abstract

The present application belongs to the field of combustion cigarette, and particularly relates to a kind of inorganic aluminum silicate fiber-tobacco extract composite material, which is composed of inorganic aluminum silicate fiber substrate and tobacco extract loaded thereon; in the inorganic aluminum silicate fiber substrate, the single filament diameter of inorganic aluminum silicate fiber is 2-10 μm, the fiber density of inorganic aluminum silicate fiber is 50-140 kg / m 3 ; and the loading amount of tobacco extract is 50-180 wt.%. The present application provides a pure inorganic fiber skeleton combustion rod for the first time, and further finds that inorganic aluminum silicate fiber is innovatively used as the substrate skeleton, and the diameter of fiber, the fiber density of substrate and the loading amount of tobacco extract are jointly controlled, so that the problems of difficult combustion, easy extinguishing and difficult to balance the total particulate matter of mainstream smoke of inorganic substrate can be solved, the combustion performance can be improved, and in addition, the combustion of miscellaneous gas can be reduced and the smoking quality can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of traditional combustible cigarettes, in particular to the field of traditional combustible cigarette rod technology. BACKGROUND

[0002] Tobacco sheet, also known as reconstituted tobacco or regenerated tobacco, is a regenerated tobacco leaf made of tobacco waste such as tobacco stems, tobacco dust, tobacco tags, tobacco fragments and part of low-grade tobacco leaves in the process of tobacco re-drying and cigarette production.

[0003] Tobacco sheet includes paper-making method, thick pulp method and roller pressing method according to different production processes. The most widely used method in the tobacco industry is the paper-making method. The process is to soak and extract tobacco materials with water, separate the insoluble and water-soluble materials, make the solid into a fibrous sheet base by papermaking, concentrate the liquid into tobacco extract, and finally coat or spray the extract onto the base, dry and cut it to obtain the tobacco sheet.

[0004] There are mainly two directions for the use of tobacco sheet in tobacco products. One is combustible cigarette, which can reduce the consumption of tobacco leaf and increase the utilization rate of tobacco material by mixing tobacco sheet into tobacco stems and cut tobacco, thus creating more economic benefits. In addition, mixing tobacco sheet can also reduce or adjust the tar and nicotine content of cigarettes, thereby improving the safety of smoking. The other is heat-type cigarette. Since the external heat source such as electronic device is used when smoking heat-type cigarette, the tobacco material does not burn, and the aerosol is generated by the atomizing agent such as glycerol under external heating conditions. Tobacco sheet as a reconstituted tobacco leaf can add sufficient atomizing agent in the production process, so it is widely used in heat-type cigarettes.

[0005] The ordinary manufacturing process for producing tobacco sheet is largely a physical recombination process of raw materials. The chemical composition of the tobacco sheet obtained by this method is not much different from that of the tobacco dust and tobacco stems as raw materials. The chemical components affecting the taste are also introduced into the tobacco sheet, such as tobacco cell wall material and protein, which are the main chemical components that are significantly disadvantageous to the quality of tobacco leaf. Tobacco cell wall material plays a skeleton role in ordinary tobacco leaf, tobacco stems and tobacco sheet, mainly including insoluble organic substances such as cellulose, hemicellulose, lignin and pectin, accounting for about 30% of dry matter in flue-cured tobacco leaf and about 40% in tobacco stems. These large molecular organic substances constituting the skeleton have a negative impact on the quality and flavor of tobacco, such as the throat irritation caused by the pyrolysis of low aldehydes. Cigarette smoke with high protein content often has a bitter taste, because part of the protein is hydrolyzed into peptides or amino acids with bitter taste. The hydrophobic combination and cross-linking reaction of protein and polyphenolic compounds can also cause astringency The cause of the generation of the miscellaneous gas is very complex, but it is generally considered that the degree of decomposition of chlorophyll and the nature of the protein are related factors .

[0006] In order to improve the taste of tobacco sheet cigarette products, there are many reports about the biodegradation method to reduce the content of biological macromolecules in the sheet. CN1600183A discloses a preparation process of papermaking tobacco sheet, in which enzyme preparation or microbial preparation is added to the tobacco water extract concentrate to degrade biological macromolecules. However, more than 90% of the protein content in tobacco is water-insoluble protein, and the lignin is basically insoluble, so the content of protein and lignin in the extract is very small, which leads to a small removal effect of this method on these two substances, and thus the effect of improving the taste of the tobacco sheet is not great. CN1836589A discloses a papermaking reconstituted tobacco leaf extraction and concentration process, which involves adding enzyme preparation to the tobacco raw material before extraction. However, CN1836589A biologically degrades the extract, and the enzyme preparation is protease, cellulase, pectinase, amylase or saccharifying enzyme, which is used alone or in combination according to the characteristics of the raw material and the target value of the product. The aroma quality and quantity are significantly increased, and the amount of miscellaneous gas is significantly reduced. These methods have achieved the effect of improving the sensory quality, but the degree of improvement is limited, because they are all around reducing the content of chemical components in the extract that can affect the internal quality, and a large part of these components in the tobacco sheet exist in the base sheet, which have not been effectively removed, as can be seen from other literature reports. Zheng Qin'an inoculated a certain amount of microbial quality enhancer (active dry yeast GTA1, active aroma-enhancing bacteria AQB2, protease DBC3) into the extract for fermentation, and after the longest fermentation time of 8h designed by experiment, the protein content in the tobacco sheet was only reduced from 4.59% at 0h to 4.23%, with a reduction rate of 7.8% , which proves that the protein in the tobacco sheet mainly exists in the base sheet rather than in the extract. Other literature reports that the protein and pectin contents in the tobacco extract are very low, only 0.275% and 0.744% , respectively. Ning Min conducted electron microscopy and micro-combustion calorimetry experiments on the base sheet of the papermaking sheet, and the results showed that the main components of the base sheet were cellulose, hemicellulose, pectin and starch . These components can easily cause the tobacco sheet to have heavy miscellaneous gas, strong irritation and strong woody aroma, which affects the use effect and addition amount of the sheet in the cigarette product. Fu Qi thinks that, from the types and contents of the pyrolysis products of the base sheet of the papermaking reconstituted tobacco leaf, the influence of the base sheet on the improvement of the quality of the reconstituted tobacco leaf or the reduction of the release amount of harmful substances needs to be considered .

[0007] 1. Daiya, et al., Several chemical components causing adverse taste of cigarettes. Tobacco Science and Technology, 1999(05): p. 27-28.

[0008] 2. Zhanglichang, et al., Effects of Enzyme Treatment on Tobacco. Tobacco Science and Technology, 2001(04): p. 7-9.

[0009] 3. Zheng Qinan, et al., Application of Microbial Growth Promoter in the Production of Reconstituted Tobacco by Papermaking Process. Journal of Zhejiang University of Technology, 2004(04): p. 82-86.

[0010] 4. Chengchanghe, et al., Effects of Concentrated Alcohol Treatment on Sensory Quality and Aroma Components of Tobacco Sheet. Anhui Journal of Agricultural Sciences (First Half), 2011. 17(01): p. 142-144.

[0011] 5. Ningmin, et al., Effects of Physical Parameters on Thermal Degradation and Combustion Characteristics of Paper-based Reconstituted Tobacco. Tobacco Science and Technology, 2013. 19(01): p. 15-20.

[0012] 6. Fu Qi, et al., Study on Pyrolysis Products of Paper-based Reconstituted Tobacco Substrate in Different Atmospheres and Temperature Ranges. Transactions of China Textile University, 2019. 34(02): p. 16-23. SUMMARY

[0013] In view of the problems of existing combustible tobacco sheet, such as unpleasant odor and unsatisfactory smoking flavor, the first object of the present application is to provide an inorganic aluminum silicate fiber-tobacco extract composite material, which is a pure inorganic substrate type combustible cigarette burning material without tobacco and adhesive.

[0014] The second object of the present application is to provide a preparation method of the inorganic aluminum silicate fiber-tobacco extract composite material.

[0015] The third object of the present application is to provide an application of the inorganic aluminum silicate fiber-tobacco extract composite material in the preparation of a combustible cigarette.

[0016] The fourth object of the present application is to provide a combustible cigarette and a burning rod added with the inorganic aluminum silicate fiber-tobacco extract composite material.

[0017] The existing combustion rod of the combustion type cigarette mainly takes tobacco fiber as the framework, and has many cell walls, organic fibers and protein components, which are easy to produce miscellaneous gas during combustion. Therefore, the application attempts to provide a combustion rod with an inorganic framework as a substrate, however, research finds that in order to realize the new idea, it is necessary to overcome the technical problems that the incombustibility of the inorganic framework is not ideal, it is easy to extinguish, and it is difficult to balance the smoking taste, and the application provides the following solutions:

[0018] An inorganic aluminum silicate fiber-tobacco extract composite material is composed of an inorganic aluminum silicate fiber substrate and a tobacco extract loaded thereon.

[0019] In the inorganic aluminum silicate fiber substrate, the single filament diameter of the inorganic aluminum silicate fiber is 2-10 μm, and the inorganic aluminum silicate fiber density is 50-140 kg / m 3 ;

[0020] The loading amount of the tobacco extract is 50-180 wt.%.

[0021] The application first provides a combustion rod with a pure inorganic fiber framework, and further finds that the inorganic aluminum silicate fiber is innovatively used as a substrate framework, and the diameter of the fiber, the fiber density of the substrate and the loading amount of the tobacco extract are jointly controlled, so that the problems of difficult combustion, easy extinguishing and difficult balance of the total particulate matter of the mainstream smoke of the inorganic substrate can be solved, the combustion performance can be improved, and the combustion miscellaneous gas can be reduced and the smoking quality can be improved.

[0022] In the application, the inorganic aluminum silicate fiber substrate is an inorganic fiber paper without inorganic adhesive components formed by interlacing inorganic aluminum silicate fibers.

[0023] In the application, the inorganic aluminum silicate fiber and the joint control of the fiber diameter, the weaving density and the loading amount of the tobacco extract are the keys to solve the problems of difficult combustion and difficult balance of the combustion and the smoking taste of the inorganic substrate.

[0024] As preferred, the single filament diameter of the inorganic aluminum silicate fiber is 4-8 μm, and further preferably 5-7 μm. Research finds that the preferred single filament diameter of the aluminum silicate fiber helps to further improve the combustion performance of the inorganic substrate composite material, and also helps to release the total particulate matter of the mainstream smoke, so that the combustion and the smoking taste are balanced.

[0025] As preferred, the inorganic aluminum silicate fiber density in the inorganic aluminum silicate fiber substrate is 60-100 kg / m 3 ; and further preferably 85-95 kg / m 3The research finds that, under the preferred density of the inorganic aluminum silicate fiber, the combustion performance of the inorganic substrate composite material is further improved in a synergistic manner, and in addition, the total particulate matter in mainstream smoke is also improved, so that the combustion and smoking taste are both considered.

[0026] In the present application, the tobacco extract can be extracted based on the conventional process in the industry. For example, the tobacco extract is an extract of tobacco raw material extracted by a solvent; the tobacco raw material is at least one of tobacco leaves, tobacco stems, and tobacco fines; and the solvent is at least one of water and alcohol.

[0027] Preferably, the loading amount of the tobacco extract is 100-180 wt.%.

[0028] The present application also provides a preparation method of the inorganic aluminum silicate fiber-tobacco extract composite material, which comprises the following steps: obtaining an inorganic aluminum silicate fiber substrate, and then compounding the substrate with a solution in which the tobacco extract is dissolved, and then drying to obtain the inorganic aluminum silicate fiber-tobacco extract composite material.

[0029] In the present application, the solid content of the solution of the tobacco extract is not particularly limited, for example, the solid content is 30 wt%-60 wt%.

[0030] In the present application, the compounding mode is, for example, dipping, spray coating, knife coating, and the like.

[0031] In the preparation method of the present application, the compounding process is carried out under negative pressure.

[0032] Preferably, the pressure of the negative pressure is less than or equal to 0.5 atm. Under the preferred process, the loading amount of the tobacco extract is further controlled to be 150-180 wt.%. In this way, the synergy is further achieved, and the all-inorganic skeleton material can further consider the combustion performance and the smoking taste.

[0033] The present application researches and finds that, the compounding preparation under negative pressure is helpful for the combination and synergy of the fiber and its parameters, and is helpful for further improving the combustion performance of the inorganic skeleton composite material, and in addition, is helpful for improving the total particulate matter in mainstream smoke, so that the good combustion and smoking taste are both considered.

[0034] The present application also provides an application of the inorganic aluminum silicate fiber-tobacco extract composite material, which is used for preparing a combustible cigarette.

[0035] The preferred application of the present application is used for preparing a combustion rod of a combustible cigarette. The present application proposes an all-inorganic skeleton composite material without tobacco shreds and organic bonding components, which benefits from the combined control of the inorganic fiber, the fiber characteristics, and the conditions, can achieve synergy, can be beneficial to the combustion of the all-inorganic skeleton material, and in addition, can improve the total particulate matter, so that the combustion and smoking taste are both considered.

[0036] The application further provides a combustion stick of a combustible cigarette, comprising a combustion core material and cigarette paper covering the combustion core material, wherein the combustion core material is composed of the inorganic aluminum silicate fiber-tobacco extract composite material.

[0037] The combustion stick of the combustible cigarette comprises the inorganic aluminum silicate fiber-tobacco extract composite material in the combustion core material in at least one of a felt shape, a sheet shape, a thin rope shape and a wire shape.

[0038] The application further provides a combustible cigarette, comprising a filter, a combustion stick and tipping paper connecting the filter and the combustion stick, wherein the combustion stick is the combustion stick of the combustible cigarette.

[0039] Beneficial effects

[0040] The application first provides a pure inorganic fiber skeleton combustion stick, and further finds that the inorganic aluminum silicate fiber is innovatively used as a substrate skeleton, and the diameter of the fiber, the fiber density of the substrate and the load parameter of the tobacco extract are jointly controlled, so that the problems of difficult combustion, easy extinguishing and difficult consideration of total particulate matter in mainstream smoke of the inorganic substrate can be solved, the combustion performance can be improved, in addition, the combustion of miscellaneous gas can be reduced and the smoking quality can be improved.

[0041] The material provided by the application does not need to use plant material mainly composed of organic matter as a skeleton, so that the introduction of tobacco cell walls and proteins can be greatly reduced, for example, the introduction of proteins can be reduced by 20% to 60%, and in addition, organic bonding components are omitted. The scheme provided by the application can realize the combustion of the inorganic skeleton composite material based on the combination of components and parameters, avoid the problem of extinguishing of the inorganic skeleton combustion, and in addition, can facilitate the release of total particulate matter in mainstream smoke, so as to consider excellent smoking taste.

[0042] The preparation aspect adopts negative pressure for compounding, which can further improve the combustion performance of the inorganic skeleton composite material, and in addition, can further improve the total particulate matter and improve the consideration effect of combustion and smoking taste. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 SEM images of different extract contents of each case, wherein the upper left image is an SEM image of the composite sheet of Example 1; the upper right image is an SEM image of the composite sheet of Example 2; the lower left image is an SEM image of the composite sheet of Example 3; and the lower right image is an SEM image of the composite sheet of Comparative Example 4;

[0044] Figure 2The pictures of different extract contents of each case, wherein, the upper left picture is the picture of the composite sheet of Example 1; the upper right picture is the picture of the composite sheet of Example 2; the lower left picture is the picture of the composite sheet of Example 3; and the lower right picture is the picture of the composite sheet of Comparative Example 4; Specific embodiments

[0045] The embodiments of the application are further described below by way of examples, but the scope of the application is not limited to this. The examples given are merely illustrative and are not to be understood as limiting the application. Any non-essential improvements and modifications made to the application by those skilled in the art based on the content of the application shall still fall within the protection scope of the application.

[0046] In the following cases, the tobacco extract can be used commercially or prepared based on existing methods. In the following cases, unless otherwise stated, the preparation steps are as follows: the waste tobacco leaf powder is added into a suitable volume of reaction kettle with 70% ethanol solution at a mass ratio of 1:5-1:8, stirred at room temperature for 40-60 minutes, and the solid waste residue is removed by filtration. After concentration, the final tobacco extract has a solid content of about 42%-50%.

[0047] Examples 1-4

[0048] Ceramic fiber paper with different parameters (Zhejiang Chenye Crystal Fiber Co., Ltd.) is selected as the inorganic aluminum silicate fiber substrate (parameters are shown in Table 1), and a certain amount of tobacco extract (parameters are shown in Table 1) is loaded by spray coating. The substrate is dried at 60°C until the water content is 10%-12%, and then cut into a silk-like shape with a width of about 1 mm, and then rolled into a cigarette.

[0049] Example 5

[0050] On the basis of the processes of Example 3, negative pressure coating is used, i.e. the substrate is fixed on a screen, and spray coating is performed while negative pressure suction is turned on. Other operations and parameters are the same as those of Example 3.

[0051] Comparative Example 1

[0052] The cigarette is made of ordinary sheet, for example, compared with Example 1, the only difference is that the silk-like tobacco raw material formed by ordinary reconstituted tobacco is used to replace the pure inorganic fiber material, and other operations and parameters are the same as those of Example 1.

[0053] Comparative Examples 2-6

[0054] Compared with Example 1, the main difference is that the parameters and loading amount of pure inorganic fiber are changed, and the parameter values are shown in Table 1. Other operations and parameters are the same as those of Example 3.

[0055] The obtained samples were subjected to total particulate matter detection in the ISO smoking mode of a linear smoking machine (CERULEAN SM450, Sujing, UK), in accordance with "GB / T 19609-2004 Determination of total particulate matter and tar delivered by smoking machines for routine analysis of tobacco", 3 sets of parallel samples were set for each sample, 5 cigarettes were tested for each parallel test, and the total particulate matter was collected by the built-in Cambridge filter in the trap.

[0056] The combustibility was tested in accordance with "GB / T 22838.11-2009 Determination of the physical properties of tobacco and filter rods - Part 11: Cigarette extinguishing". All samples and Cambridge filters were placed in a constant temperature and humidity equilibration box at a temperature of (22±1) ℃ and a humidity of (60±3)% for 48 hours before the experiment. The experimental data obtained were listed in Table 1 together with the parameters of the fiber paper.

[0057]

[0058] From Table 1, it can be seen that the technical scheme of the present application can realize normal ignition and burnout under full inorganic conditions, especially the negative pressure treatment of Example 5, which can obtain excellent mainstream smoke total particulate matter release effect under the premise of ensuring full inorganic combustion (its combustion and total particulate matter can be comparable to the plant fiber tobacco sheet of Comparative Example 1). In addition, Comparative Examples 2-6 cannot meet the use requirements of cigarettes, among which the total particulate matter of Comparative Example 5 is less than half of that of ordinary sheet, the smoke amount is too low to meet the normal smoking demand. The combustibility of the other comparative examples is not good, and they also cannot meet the normal smoking demand.

[0059] Figure 1 is the SEM image of Examples 1-3 and Comparative Example 4, Figure 2 is the filamentous raw material obtained by drying after loading different concentrations of tobacco extract. From the figure, it can be seen that the dispersity of low (Example 1) and medium concentration (Example 2) is very good, and high concentration (Example 3) starts to have a grouping phenomenon, and extra-high concentration (Comparative Example 4) almost becomes a small group.

[0060] Protein and cell wall determination was performed on the extract, substrate (compared with the ordinary sheet of Comparative Example 1, the substrate is a component part and does not contain extract components), ordinary sheet (Comparative Example 1), and inorganic skeleton sheet (Example 2) of the above cases, and the results are shown in Table 2:

[0061]

[0062] Sensory evaluation was performed on the prepared single-leaf cigarettes, and the scoring standard is shown in Table 3:

[0063]

[0064] From Table 4, it can be seen that the inorganic skeleton sheet has higher scores in aroma quality, odor, irritation, etc. compared to the common sheet. Overall, the all-inorganic sheet of the present application can obtain a better smoking experience.

Claims

1. A combustion rod for a smokeable cigarette, comprising a combustion core material and cigarette paper covering the combustion core material, characterized in that, The combustion core material is composed of an inorganic aluminum silicate fiber-tobacco extract composite material; The inorganic aluminosilicate fiber-tobacco extract composite material is composed of an inorganic aluminosilicate fiber substrate and the tobacco extract loaded thereon. The inorganic aluminosilicate fiber substrate has a single filament diameter of 2μm~10μm and a fiber density of 85~95kg / m³. 3 ; The loading of tobacco extract was 100~180 wt.%; Inorganic aluminum silicate fiber substrate is an inorganic fiber paper without organic binder components, formed by interlacing inorganic aluminum silicate fibers; The inorganic aluminum silicate fiber-tobacco extract composite material is obtained by combining an inorganic aluminum silicate fiber substrate with a solution containing dissolved tobacco extract, followed by drying; wherein the compounding method is spray coating.

2. The combustion rod of the cigarette as described in claim 1, characterized in that, In the inorganic aluminosilicate fiber-tobacco extract composite material, the single filament diameter of the inorganic aluminosilicate fiber is 4μm~8μm.

3. The combustion rod of the cigarette as described in claim 1, characterized in that, The tobacco extract is an extract of tobacco raw material obtained by solvent extraction; the tobacco raw material is at least one of tobacco leaves, tobacco stems, and tobacco dust; and the solvent is at least one of water and alcohol.

4. The combustion rod of the cigarette as described in claim 1, characterized in that, The compounding process is carried out under negative pressure conditions.

5. The combustion rod of the cigarette as described in claim 4, characterized in that, The negative pressure is less than or equal to 0.5 atm.

6. The combustion rod of the cigarette as described in claim 1, characterized in that, The inorganic aluminum silicate fiber-tobacco extract composite material in the combustion core material is in the form of a thin felt.

7. The combustion rod of the cigarette as described in claim 1, characterized in that, The inorganic aluminum silicate fiber-tobacco extract composite material in the combustion core material is in sheet form.

8. The combustion rod of the cigarette as described in claim 1, characterized in that, The inorganic aluminum silicate fiber-tobacco extract composite material in the combustion core material is in the shape of a fine rope.

9. The combustion rod of the cigarette as described in claim 1, characterized in that, The inorganic aluminum silicate fiber-tobacco extract composite material in the combustion core material is in the form of filaments.

10. A type of cigarette for smoking, comprising a filter tip, a burner rod, and a tipping paper for joining the filter tip and the burner rod, characterized in that, The combustion rod is the combustion rod of the inhalable cigarette as described in any one of claims 1 to 9.

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