阅读说明：本技术 一种降低卷烟烟气中丁酸的方法 (Method for reducing butyric acid in cigarette smoke ) 是由 周骏 徐同广 刘德水 矫海楠 芦楠 蒋成勇 马雁军 张�杰 郑晓曼 周昭娟 于 2021-08-25 设计创作，主要内容包括：本发明提供一种降低卷烟烟气中丁酸的方法,该方法包括：采用功能性复合卷烟滤棒对卷烟烟气进行过滤的步骤；所述功能性复合卷烟滤棒的添加材料包括选自大孔容硅胶材料、炭气凝胶和纳米硅基氧化物中的多种。本发明提供的方法以功能性复合滤棒形式降低卷烟烟气中丁酸刺激性成分的方法,同时对卷烟成本影响较小。(The invention provides a method for reducing butyric acid in cigarette smoke, which comprises the following steps: filtering the smoke of the cigarette by adopting a functional composite cigarette filter stick; the additive material of the functional composite cigarette filter stick comprises a plurality of materials selected from a large-pore-volume silica gel material, carbon aerogel and nano silicon-based oxide. The method provided by the invention reduces the butyric acid irritant component in the cigarette smoke in the form of the functional composite filter stick, and has small influence on the cigarette cost.)

1. A method for reducing butyric acid in cigarette smoke is characterized by comprising the following steps: filtering the smoke of the cigarette by adopting a functional composite cigarette filter stick; the additive material of the functional composite cigarette filter stick comprises a plurality of materials selected from a large-pore-volume silica gel material, carbon aerogel and nano silicon-based oxide.

2. The method for reducing butyric acid in cigarette smoke according to claim 1, wherein said additive material comprises a large pore volume silica gel material, carbon aerogel and nano silicon-based oxide.

3. The method for reducing butyric acid in cigarette smoke according to claim 2, wherein the mass ratio of the large-pore-volume silica gel material, the carbon aerogel and the nano silicon-based oxide is 18-36: 8-18: 3-6.

4. The method for reducing butyric acid in cigarette smoke according to claim 2 or 3, wherein the amount of the macroporous silica gel material is 24-26 mg/cigarette; the dosage of the carbon aerogel is 12-13 mg/branch; the dosage of the nano silicon-based oxide is 4-6 mg/count.

5. The method for reducing butyric acid in cigarette smoke according to any one of claims 1 to 4, wherein said nano silicon-based oxide is nano silica powder; preferably, the preparation of the nano silicon-based oxide comprises the following steps: sodium silicate and hydrochloric acid are used as raw materials to carry out precipitation reaction to obtain SiO₂Precipitating the SiO₂Mixing the precipitate with ethanol to obtain alcohol-dispersed SiO₂Sol; then drying and calcining are carried out to obtain nano silicon dioxide powder; preferably, a nonionic surfactant is added to the reaction solution during the precipitation reaction.

6. The method for reducing butyric acid in cigarette smoke according to any one of claims 1 to 4, wherein said carbon aerogel is microporous structure carbon aerogel; preferably, the specific surface area of the carbon aerogel is 976m²In terms of a/g, the mean pore diameter is 12.97 nm.

7. The method for reducing butyric acid in cigarette smoke according to any one of claims 1 to 4, wherein the macroporous silica gel material is a mesoporous structure macroporous silica gel material; preferably, the specific surface area of the large-pore-volume silica gel material is 387m²In terms of/g, the mean pore diameter is 8.9 nm.

8. The method for reducing butyric acid in cigarette smoke according to any one of claims 1 to 7, wherein the functional composite cigarette filter stick is obtained by compounding a feed cigarette filter stick and a pure acetate cigarette filter stick, and the additive material is filled in the feed cigarette filter stick.

9. The method for reducing butyric acid in cigarette smoke according to claim 8, wherein the length ratio of the feed cigarette filter stick to the pure acetate fiber cigarette filter stick is 1-2.5: 1, preferably 1.5-2: 1.

10. the method for reducing butyric acid in cigarette smoke according to any one of claims 1 to 9, wherein the preparation step of the functional composite cigarette filter stick comprises the following steps: adding a large-pore-volume silica gel material, carbon aerogel and nano silicon-based oxide into a cigarette bundle according to a proportion to obtain a cigarette filter stick with a charge, and then compounding the cigarette filter stick with a pure acetate fiber cigarette filter stick to prepare a functional composite cigarette filter stick; preferably, the method further comprises mixing the nano silicon-based oxide with glycerol triacetate.

Technical Field

The invention relates to the field of cigarette smoke adsorption, in particular to a method for reducing butyric acid in cigarette smoke.

Background

The variety of the compounds distributed in the gas phase and particle phase substances of the cigarette smoke aerosol is thousands of, and the composition and the content of the compounds have important influence on the sensory quality of the cigarettes. The sensory quality evaluation of the cigarette by the smoker is carried out by evaluating the comprehensive reflecting effect of the smoke generated after the cigarette is burnt, namely, the aroma components in the smoke generated after the cigarette is burnt, on the feeling of the smoker. Cigarette smoke irritation refers to a slight or noticeable unpleasant sensation of smoke to the senses, including irritation of the mouth, throat and nasal cavity. The oral cavity can judge the irritation (pungency) of the smoke, roughness or fineness, hardness or softness of the smoke, concentration or lightness of the smoke, fullness and aftertaste of the smoke, and the throat can also judge the irritation of the smoke and the strength of the smoke when the smoke flows to the front edge of the throat.

The sensory quality of the cigarette is closely related to the types and concentrations of chemical components in the smoke, and the taste is also related to the threshold value of the chemical components, wherein the threshold value refers to the lowest concentration of the components which can be sensed, and the smaller the threshold value of one component is, the stronger the sensitivity is. Some cigarettes often generate unpleasant sour taste, bitter taste, spicy taste, astringent taste and the like, researches show that substances such as volatile carbonyl compounds, phenolic compounds, ammonia and the like with low molecular weight in smoke have irritant effects on the pseudo-thermal effect of the palate part of an oral cavity, and non-volatile organic acids have strong spicy, burning and rancidity smells at higher concentration, and the substances stimulate taste acceptance and sensory nerves of the oral cavity and sensory nerve endings and have negative effects on the sensory quality of the cigarettes. The butyric acid has strong irritation and unpleasant rancid butter smell, and can generate strong irritation and obvious offensive odor on the sensory quality of cigarette mainstream smoke, thereby obviously influencing the taste and the aroma.

With the change of cigarette consumption habits and related requirements, the cigarette product has lower irritation, mellow taste and clean aftertaste, the market share of the cigarette product pursuing comfort is continuously expanding and firming, and the research and the improvement of the development technology of comfortable cigarettes are increasingly important. How to keep and promote the sensory comfort of the cigarette, know which components have important influence on the sensory comfort, selectively reduce the chemical components with adverse effect, and have significance for reasonably utilizing the raw and auxiliary materials of the cigarette, properly selecting the processing process parameters and improving the smoking quality of the cigarette. At present, few adsorption materials are added into filter sticks, and the adsorption materials and the undesirable ingredients in the cigarette taste can be subjected to physical or chemical adsorption, so that the problem that the undesirable ingredients in the taste enter the oral cavity of a smoker is reduced. The requirement of reducing butyric acid in cigarette smoke in the form of a functional composite filter stick is an important subject to be solved urgently in the industry at present.

Disclosure of Invention

The invention provides a method for reducing butyric acid in cigarette smoke. The method provided by the invention reduces the butyric acid irritant component in the cigarette smoke in the form of the specific functional composite filter stick, and has small influence on the cigarette cost.

The invention provides a method for reducing butyric acid in cigarette smoke, which comprises the following steps: filtering the smoke of the cigarette by adopting a functional composite cigarette filter stick; the additive material of the functional composite cigarette filter stick comprises a plurality of materials selected from a large-pore-volume silica gel material, carbon aerogel and nano silicon-based oxide.

According to the method for reducing butyric acid in cigarette smoke, provided by the invention, the additive materials comprise a large-pore-volume silica gel material, carbon aerogel and nano silicon-based oxide. According to the invention, the addition material can adsorb butyric acid from multiple angles, and particularly, the multiple adsorption action among the macroporous silica gel material, the carbon aerogel and the nano silicon-based oxide material is utilized, so that the synergistic performance of the adsorption material is promoted.

According to the method for reducing butyric acid in cigarette smoke, the mass ratio of the large-pore-volume silica gel material to the carbon aerogel to the nano silicon-based oxide is 18-36: 8-18: 3-6. According to the invention, by adopting the proportion, materials with different pore diameters can better play a physical adsorption role, so that the concentration of an irritant component butyric acid in cigarette smoke is obviously reduced.

According to the method for reducing butyric acid in cigarette smoke, the dosage of the large-pore volume silica gel material is 24-26 mg/cigarette; the dosage of the carbon aerogel is 12-13 mg/branch; the dosage of the nano silicon-based oxide is 4-6 mg/count.

According to the invention, a large pore-containing silica gel material with rich mesoporous structure, a carbon aerogel with rich microporous structure and a nano silicon-based oxide are added into a filter stick according to a certain proportion to be processed into a functional composite filter stick, and the functional filter stick is applied to a mixed type cigarette, wherein the added material in the functional filter stick has rich mesoporous structure, microporous structure and polar functional group, so that the irritation component in the smoke of the mixed type cigarette can be effectively reduced, the smoke is fine and smooth, and the smoothness is enhanced; meanwhile, the miscellaneous gas is reduced, the purity of the cigarette aroma is increased, and the improvement and the promotion of the smoke smell of the blended type cigarette are realized.

According to the method for reducing butyric acid in cigarette smoke, provided by the invention, the nano silicon-based oxide is nano silicon dioxide powder; preferably, the preparation of the nano silicon-based oxide comprises the following steps: sodium silicate and hydrochloric acid are used as raw materials, 1-5% of nonionic surfactant is added into reaction liquid, and SiO is formed through precipitation reaction₂And (4) precipitating. Mixing SiO₂Mixing the precipitate with an amount of ethanol to form alcohol-dispersed SiO₂Drying, calcining at high temperature to obtain nano SiO₂And (3) powder materials. The specific surface area of the obtained nano silicon-based oxide is 605m²The pore size distribution range is 0.5-95 nm.

According to the method for reducing butyric acid in cigarette smoke, provided by the invention, the carbon aerogel is a microporous structure carbon aerogel(ii) a Preferably, the specific surface area of the carbon aerogel is 976m²In terms of a/g, the mean pore diameter is 12.97 nm.

According to the method for reducing butyric acid in cigarette smoke, provided by the invention, the macroporous silica gel material is a mesoporous structure macroporous silica gel material; preferably, the specific surface area of the large-pore-volume silica gel material is 387m²In terms of/g, the mean pore diameter is 8.9 nm.

In the invention, the specific addition materials, especially the macroporous silica gel material, the carbon aerogel and the nano silicon-based oxide under the parameters can better perform physical adsorption, and have synergistic effect on adsorbing the irritant components, so that the concentration of the irritant component butyric acid in the smoke is obviously reduced.

According to the method for reducing the butyric acid in the cigarette smoke, the functional composite cigarette filter stick is obtained by compounding a feed cigarette filter stick and a pure acetate fiber cigarette filter stick, and the additive material is filled in the feed cigarette filter stick.

According to the method for reducing butyric acid in cigarette smoke, provided by the invention, the length ratio of the feed cigarette filter stick to the pure acetate fiber cigarette filter stick is 1-2.5: 1, preferably 1.5-2: 1.

according to the method for reducing butyric acid in cigarette smoke, provided by the invention, the preparation steps of the functional composite cigarette filter stick comprise: adding a large-pore-volume silica gel material, carbon aerogel and nano silicon-based oxide into a cigarette bundle according to a proportion to obtain a cigarette filter stick with a charge, and then compounding the cigarette filter stick with a pure acetate fiber cigarette filter stick to prepare a functional composite cigarette filter stick; preferably, the method further comprises mixing the nano silicon-based oxide with glycerol triacetate. According to the invention, the cigarette filter stick is arranged into the two-section type composite structure of the feeding section and the pure acetate fiber section, and by adopting the method, the better effect of selectively reducing the target irritant component in the smoke can be realized through the interaction of different functional materials.

The invention also provides application of the functional composite filter stick for reducing acetone in cigarette smoke in conventional cigarettes and medium-grade cigarettes.

The invention has the beneficial effects that: the composite additive material of the functional composite filter stick adopted by the method has the advantages of no toxicity, no harm, sufficient source, simple process flow, convenient manufacture and low cost; based on the pore size difference and the surface functional group of the material, molecular compounds with different sizes and properties can be selectively adsorbed, adsorption materials with different pore sizes and surface functional groups are designed, the influence of the material on the release amount of adverse sensory components in cigarette smoke is researched, and the selection and application combination of the material in the cigarette filter stick is optimized. The invention utilizes the properties that the macroporous silica gel material has rich mesopores, the carbon aerogel material has rich micropores and the nano silicon-based oxide surface has rich hydroxyl functional groups capable of adsorbing butyric acid, and the composite materials have simple adding process in the filter stick without changing the existing cigarette production process and adding auxiliary equipment. The invention can selectively reduce the irritant ingredient in the main stream smoke of the cigarette, improve and enhance the taste quality to a certain extent, simultaneously keep the original style of the cigarette unchanged, meet the physiological requirements of consumers and enhance the competitiveness of the product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a functional composite cigarette filter stick in embodiment 1 of the invention;

fig. 2 is a schematic structural diagram of a functional composite cigarette filter stick in embodiment 2 of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention. The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications.

In the present invention, the instruments and the like used are conventional products which are purchased from regular vendors, not indicated by manufacturers. The process is conventional unless otherwise specified, and the starting materials are commercially available from the open literature. The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications.

In the embodiment of the invention, the used nano silicon-based oxide: it is preferable to add a nonionic surfactant (5% Triton X-100) to the reaction mixture, by using sodium silicate and hydrochloric acid as raw materials and forming a silica precipitate by a precipitation reaction to control the particle size and dispersibility. The silica precipitate was mixed with ethanol at 10 g: 20ml of the above-mentioned components were mixed at a mass/volume ratio to form an alcohol-dispersed silica sol. Drying, calcining at 550 deg.C to obtain nanometer silicon-based oxide with specific surface area of 605m²The pore size distribution range is 0.5-95 nm. In the embodiment of the invention, the nano silicon-based oxide is uniformly dispersed into plasticized preferable glyceryl triacetate according to a proportion. The mass ratio of the nano silicon-based oxide to the plasticizer is 1: 10.

In the examples of the present invention, the carbon aerogel used: the specific surface area of the carbon aerogel is 976m²In terms of a/g, the mean pore diameter is 12.97 nm.

In the embodiment of the invention, the specific surface area of the used large-pore-volume silica gel material is 387m²In terms of/g, the mean pore diameter is 8.9 nm.

In the embodiment of the invention, a large-pore-volume silica gel material, carbon aerogel and glycerol triacetate with dispersed nano silicon-based oxides are added into cigarette tows according to a proportion to prepare a cigarette filter stick with the added material, and then the cigarette filter stick is compounded with a pure acetate fiber cigarette filter stick to prepare a functional compound cigarette filter stick, and then the functional compound cigarette filter stick is used for preparing a cigarette with obviously reduced irritation component butyric acid.

The embodiment of the invention provides a method for reducing butyric acid in cigarette smoke, which comprises the following steps: mixing a large-pore-volume silica gel material and carbon aerogel according to a certain proportion, adding the mixture into a filter stick tow by a dry method, dispersing nano silicon-based oxide into a tow plasticizer triacetin, adding the mixture into the filter stick tow by a wet method to obtain a feed cigarette filter stick, compounding the feed cigarette filter stick with a pure acetate cigarette filter stick to prepare a functional composite cigarette filter stick, and applying the composite cigarette filter stick to conventional cigarettes and medium cigarettes to reduce the concentration of an irritant component butyric acid in cigarette smoke.

Example 1

The embodiment of the invention provides a method for reducing butyric acid in cigarette smoke, which comprises the following steps:

adding macroporous silica gel, carbon aerogel and glycerol triacetate with dispersed nano silicon-based oxide into cigarette tows according to a proportion to prepare a fed cigarette filter rod, and compounding the fed cigarette filter rod, namely the length of a feeding section, with a pure acetate cigarette filter rod to prepare a functional composite cigarette filter rod (the specific structure is shown in figure 1), wherein the length of the fed cigarette filter rod, namely the feeding section, is 15mm, the composite material is a macroporous silica gel, carbon aerogel and nano silicon-based oxide composite material, the macroporous silica gel and the carbon aerogel are mixed according to a mass ratio of 3:1, the application amount of particles (the macroporous silica gel, the carbon aerogel and the nano silicon-based oxide) is 3.0 +/-0.6 mg/mm, the nano silicon-based oxide is mixed with glycerol triacetate serving as a filter rod plasticizer according to a ratio of 1:10, the application amount of the nano silicon-based oxide particles is 0.3 +/-0.05 mg/mm, and the nano silicon-based oxide particles are only added into the fed cigarette filter rod section; the length of the pure acetate fiber filter stick, namely the pure acetate fiber section is 10 mm. The circumference of the functional composite cigarette filter stick is 24.35 +/-0.2 mm (the specific structure is shown in figure 1). After the composite filter stick is processed, the dosage of the large-pore-volume silica gel material in the embodiment is 26 mg/count; the dosage of the carbon aerogel is 13 mg/branch; the dosage of the linoleic acid modified nano silicon-based oxide is 6 mg/branch. Then, the functional composite cigarette filter stick is used for manufacturing the cigarette with obviously reduced irritant ingredient butyric acid, and the embodiment provides a common cigarette with the length of 84mm, wherein the length of the tobacco shred part is 59 mm. The feeding section of the cigarette filter is close to the tobacco shreds, and the pure acetate fiber section of the cigarette filter is arranged at the outer end of the filter. When cigarette smoke passes through the functional composite cigarette filter, the additive materials with different pore-size structures and functional groups can adsorb the irritant component butyric acid in the smoke.

Control 1: in the same procedure, a cigarette manufactured by using a pure acetate fiber filter stick with the same structure as the embodiment and the same cut tobacco was prepared as a control. Compared with the contrast, the release amount of butyric acid in the mainstream smoke of the cigarette adopting the functional composite cigarette filter stick in the embodiment 1 is obviously reduced, and the reduction rate is 36.11%.

TABLE 1 Release amounts and TAV results for example 1 and control 1

Note: taste Activity Value (TAV) ═ C_{Measurement of Release amount}/TPM/C_{Threshold value}Reflecting the contribution of the compound component to the sensory quality of the cigarette, when the value is more than 1, the compound is shown to contribute to the sensory system, and the higher the value is, the greater the contribution is.

Example 2

Adding macroporous silica gel, carbon aerogel and nanometer silicon-based oxide-dispersed glycerol triacetate into cigarette tows according to a certain proportion to prepare a cigarette filter stick with the additive, compounding the cigarette filter stick with pure acetate fiber to prepare a functional composite cigarette filter stick (the specific structure is shown in figure 2), wherein the length of the charging section of the charging cigarette filter stick is 20mm, the composite material is a large pore volume silica gel, carbon aerogel or nano silicon-based oxide composite material, wherein, the large pore volume silica gel and the carbon aerogel are mixed according to the mass ratio of 2:1, the application amount of particles (the large pore volume silica gel, the carbon aerogel and the nano silicon-based oxide) after mixing is 2.0 +/-0.6 mg/mm, the nano silicon-based oxide is mixed with the filter stick plasticizer triacetin according to the mass ratio of 1:10, the nano silicon-based oxide particles are applied in the amount of 0.3 +/-0.05 mg/mm, and only the nano silicon-based oxide particles are added in the filter stick section of the fed cigarette; the length of the pure acetate fiber filter stick, namely the pure acetate fiber section is 10 mm. The circumference of the functional composite cigarette filter stick is 21.80 +/-0.2 mm. After the composite filter stick is processed, the dosage of the large-pore-volume silica gel material in the embodiment is 24 mg/count; the dosage of the carbon aerogel is 12 mg/branch; the dosage of the linoleic acid modified nano silicon-based oxide is 4 mg/branch. Then, the functional composite cigarette filter stick is used for manufacturing the cigarette with the obviously reduced irritant ingredient butyric acid, and the embodiment provides a common cigarette with the length of 94mm, wherein the length of the tobacco shred part is 64 mm. The feeding section of the cigarette filter is close to the tobacco shreds, and the pure acetate fiber section of the cigarette filter is arranged at the outer end of the filter. When cigarette smoke passes through the functional composite cigarette filter, the additive materials with different pore-size structures and functional groups can adsorb the irritant component butyric acid in the smoke.

Control 2: in the same procedure, a cigarette manufactured by using a pure acetate fiber filter stick with the same structure as the embodiment and the same cut tobacco was prepared as a control. Compared with the contrast, the release amount of butyric acid in the mainstream smoke of the cigarette adopting the functional composite cigarette filter stick in the embodiment 2 is obviously reduced, and the reduction rate is 26.11%.

TABLE 2 Release amounts and TAV results for example 2 and control 2

Note: taste Activity Value (TAV) ═ C_{Measurement of Release amount}/TPM/C_{Threshold value}Reflecting the contribution of the compound component to the sensory quality of the cigarette, when the value is more than 1, the compound is shown to contribute to the sensory system, and the higher the value is, the greater the contribution is.

The butyric acid has strong spicy and pungent odor when the concentration is higher, and reflects that stronger irritation and obvious offensive odor appear on the sensory quality of the main stream smoke of the cigarette, which is consistent with the sensory quality evaluation result of the cigarette, and the irritation of the cigarette adopting the functional composite filter stick is reduced, and the offensive odor and aftertaste are superior to those of a control cigarette. By combining the sensory evaluation result of the cigarettes, the use of the functional composite filter stick can obviously reduce the irritation and the miscellaneous gas of the smoke, improve the comfort of the oral cavity and totally does not influence the integral fragrance quantity and the style characteristics of the mixed type cigarettes.

The sensory evaluation of the cigarettes of the examples and the comparative examples was carried out with reference to the tobacco industry standard YC/T138-1998 sensory evaluation methods for tobacco and tobacco products, and the results are as follows:

TABLE 3 sensory evaluation results of cigarettes

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.