Preparation method of bio-enzyme treated paper filter stick and application of bio-enzyme treated paper filter stick

Abstract

The invention discloses a preparation method and application of a bio-enzyme treated paper filter stick, and belongs to the technical field of cigarette filter sticks. The preparation method comprises the following steps: 1, crushing and pulping the tobacco raw material, adding the biological enzyme and the tobacco extract at a constant speed while pulping, and stirring and fermenting to obtain tobacco cellulose pulp; 2, mixing the tobacco cellulose pulp and the bamboo cellulose pulp, and performing sheet making, squeezing and drying to prepare a fiber paper base; coating and drying the fiber paper base to obtain a tobacco fiber paper base material; 3, squeezing and rolling the tobacco fiber paper base material to obtain a filter element; wrapping the filter element with forming paper to obtain a tobacco fiber paper filter stick; the biological enzyme is at least two of xylanase, laccase, cellulase and ligninase. According to the preparation method disclosed by the invention, the'paper taste 'existing in the current paper filter stick can be effectively removed; the tobacco is rich in fragrance, long in shelf life and not easy to damp.

Description

Technical Field

[0001] The present application belongs to the technical field of cigarette filter rods, and relates to a preparation method of a paper filter rod treated with a biological enzyme and its application. Background Art

[0002] Paper filter rods have the ability to effectively remove harmful substances such as tar and nicotine in cigarettes. Compared with ordinary acetate or polypropylene filter rods, paper filter rods have a higher efficiency in intercepting smoke due to their natural nature. After being discarded, paper filter rods are easier to degrade, have high biodegradability, are more environmentally friendly, and have relatively low material costs. Therefore, they have received widespread attention from manufacturers and consumers.

[0003] However, the existing paper filter rods have the following shortcomings: First, there is a "paper smell", which brings a bad smoking experience to cigarette consumers; second, in addition, the paper filter rod is easily softened by moisture, resulting in a short storage period after the cigarette is opened, and a poor sensory experience when smoking later.

[0004] Therefore, a preparation method is needed to overcome or largely improve the problems of current paper filter sticks, so as to obtain a paper filter stick without paper taste, rich in tobacco flavor, long shelf life and not susceptible to moisture. Summary of the invention

[0005] In order to solve the above problems, a method for preparing a paper filter rod treated with a biological enzyme is provided, which can effectively remove the "paper smell" currently present in the paper filter rod; and the paper filter rod has a rich tobacco flavor, a long shelf life and is not easily affected by moisture.

[0006] The specific technical solutions of this application are as follows:

[0007] A method for preparing a paper filter rod treated with a biological enzyme comprises the following steps:

[0008] Step 1: crushing and pulping the tobacco raw material, adding biological enzyme and tobacco extract at a uniform speed while pulping, stirring and fermenting, and obtaining tobacco cellulose pulp;

[0009] Step 2: Mix tobacco cellulose pulp and bamboo cellulose pulp, make sheets, press and dry them to make a fiber paper base; the fiber paper base is coated and dried to make a tobacco fiber paper substrate;

[0010] Step 3: Pressing and rolling the tobacco fiber paper substrate to obtain a filter element; wrapping the filter element with molding paper to obtain a tobacco fiber paper filter rod;

[0011] The biological enzymes are at least two of xylanase, laccase, cellulase and ligninase;

[0012] The tobacco extract is prepared by the following method:

[0013] Step S1, preparing a tobacco leaf aqueous extract by water extraction of discarded tobacco leaves;

[0014] Step S2: Mix glucose and alanine, add propylene glycol and tobacco leaf water extract as reaction base liquid, adjust the pH value of the system to 6.5-8.5, place in an oil bath, cool naturally to room temperature, filter and set aside.

[0015] The stirring in step 1 can ensure that the enzyme and the slurry are fully mixed, so that the quality of the product is uniform and stable.

[0016] Optionally, in step 1, the fermentation temperature of the biological enzyme is 30-50° C., the fermentation time is 1-3 h, and the fermentation pH is 5.8-7.2.

[0017] Optionally, in step 1, the amount of biological enzyme added is 1 / 1000 to 3 / 10,000 of the weight of wood pulp; and the amount of tobacco extract added is 1 / 5-1-3 of the weight of the biological enzyme.

[0018] Optionally, the fiber paper base coating process described in step 2 is: coating the coating liquid onto the cigarette paper by off-line gravure coating, with the speed controlled at 50-70 m / min, the oven temperature at 85-95° C., and drying.

[0019] Optionally, in step 2, the mass ratio of the tobacco cellulose pulp to the bamboo cellulose pulp is 3:0.2-2.

[0020] Optionally, the tobacco raw material is any one of tobacco leaves, tobacco stems, and tobacco dust.

[0021] Optionally, the glucose and alanine are mixed in a molar ratio of 3-5:1; the added amounts of propylene glycol and tobacco leaf water extract are 0.3-0.8 times and 2-5 times the total mass of glucose and alanine, respectively.

[0022] Optionally, the oil bath conditions are: temperature 85-100° C., heating time 2-4 h.

[0023] The present application also provides an application of the above preparation method in the preparation of high-quality cigarettes.

[0024] The present application also provides a cigarette filter rod prepared by the above preparation method.

[0025] The beneficial effects of this application include but are not limited to:

[0026] 1. In the preparation process, the present application adds a composite biological enzyme prepared from at least two of xylanase, laccase, cellulase, and ligninase, which can effectively degrade the lignin in the tobacco fiber and effectively remove the "paper taste" currently present in the paper filter rod, achieving beneficial effects that other biological enzymes cannot achieve.

[0027] 2. The present application adds biological enzymes and tobacco extracts to the slurry prepared from tobacco raw materials. The present applicant unexpectedly discovered that the order of adding biological enzymes and tobacco extracts will also have a certain degree of influence on the taste of the filter rod. The present application adds biological enzymes and tobacco extracts to tobacco leaves prepared from tobacco raw materials at the same time and at a uniform speed. On the one hand, the biological enzyme can modify the fiber cell wall of the slurry, making the fiber moist and soft; the biological enzyme and the extract are added at a uniform speed at the same time, and the effect of the biological enzyme on the extract will not be so sufficient during the slow addition process. At this time, a part of the macromolecules in the extract are degraded by the composite biological enzyme into small molecule flavor substances, and the flavor is stronger and not too heavy. The small molecule substances are more volatile, making the taste more obvious 10 days before opening; due to the rapid volatilization, the small molecule flavor substances are evaporated about 10 days after opening; in this way, smokers can choose the smoking time after opening according to their personal preferences, and the smoke is rich in flavor and has a long shelf life and is not easy to be affected by moisture. The preparation method of the present application obtains a paper filter rod with no paper taste, rich smoke flavor, long shelf life and not easy to be affected by moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 This is a schematic diagram of the filter rod structure of this application.

[0030] The reference numerals are as follows:

[0031] 1 paper filter element, 2 molded paper. DETAILED DESCRIPTION

[0032] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0033] Example 1

[0034] A method for preparing a paper filter rod treated with a biological enzyme comprises the following steps:

[0035] Step 1: crushing and pulping the tobacco raw material, adding biological enzyme and tobacco extract at a uniform speed while pulping, stirring, and fermenting at 32° C. and pH 5.8 for 1 hour to obtain tobacco cellulose pulp;

[0036] The biological enzyme is a composite enzyme composed of xylanase and laccase; the amount of the biological enzyme added is 0.3% of the weight of the wood pulp; the amount of the tobacco extract added is 1 / 5 of the weight of the biological enzyme;

[0037] Step 2: mixing tobacco cellulose pulp and bamboo cellulose pulp in a mass ratio of 3:1, sheeting, pressing, and drying to form a fiber paper base; and coating and drying the fiber paper base to obtain a tobacco fiber paper substrate;

[0038] Bamboo cellulose pulp is cellulose pulp made from bamboo fibers;

[0039] The coating liquid used in the coating process is the tobacco extract in step 1 diluted 5 times; the specific coating process is: coating the coating liquid on the cigarette paper by offline gravure coating, the speed is controlled at 50-70 (60) m / min, and the oven temperature is 90°C for drying;

[0040] Step 3: Pressing and rolling the tobacco fiber paper substrate to obtain a filter element; wrapping the filter element with molding paper to obtain a tobacco fiber paper filter rod;

[0041] The tobacco extract is prepared by the following method:

[0042] Step S1, extracting the discarded tobacco leaves by water extraction at 60° C. for 40 minutes to prepare a tobacco leaf water extract;

[0043] Step S2, mix glucose and alanine in a molar ratio of 4:1, add 0.8 times the mass of propylene glycol and 3 times the mass of tobacco leaf water extract as the reaction base liquid, adjust the pH value of the system to 6.5 with ammonia water, oil bath at 85-100° C. for 2 hours, cool naturally to room temperature, filter and set aside.

[0044] Example 2 is a method for preparing a paper filter rod treated with a biological enzyme. The difference from Example 1 is that the added biological enzyme is different, that is, a complex enzyme composed of cellulase, ligninase and laccase.

[0045] Example 3

[0046] A method for preparing a paper filter rod treated with a biological enzyme comprises the following steps:

[0047] Step 1: crushing and beating the tobacco raw material, adding biological enzyme and tobacco extract at a uniform speed while beating, stirring, and fermenting at 40° C. and pH 7.2 for 1 hour to obtain tobacco cellulose pulp;

[0048] The biological enzyme is a composite enzyme composed of xylanase and laccase; the amount of the biological enzyme added is 0.3% of the weight of the wood pulp; the amount of the tobacco extract added is 1 / 4 of the weight of the biological enzyme;

[0049] Step 2: mixing tobacco cellulose pulp and bamboo cellulose pulp in a mass ratio of 3:1.3, sheeting, pressing, and drying to form a fiber paper base; and coating and drying the fiber paper base to obtain a tobacco fiber paper substrate;

[0050] The bamboo cellulose pulp and coating process are the same as in Example 1;

[0051] Step 3, same as in Example 1;

[0052] The preparation method of tobacco extract is the same as that in Example 1.

[0053] Comparative Example 1 is a method for preparing a paper filter rod treated with a biological enzyme. The difference from Example 1 is that the added biological enzyme is different, that is, a complex enzyme composed of pectinase and amylase.

[0054] Comparative Example 2 is a method for preparing a paper filter rod treated with a biological enzyme. The difference from Example 1 is that the added biological enzyme is different, that is, a complex enzyme composed of cellulase, β-glucosidase, and pectinase.

[0055] Comparative Example 3 A method for preparing a paper filter rod treated with a biological enzyme, which differs from Example 1 in that no tobacco extract is added

[0056] Comparative Example 4 is a method for preparing a paper filter rod treated with a biological enzyme, which is different from Example 1 in that the order of adding the raw materials is different. In step 1, the biological enzyme is added first and then the tobacco extract is added.

[0057] Comparative Example 5: A method for preparing a paper filter rod treated with a biological enzyme, which is different from Example 1 in that in step 1, tobacco extract is first added and then the biological enzyme is added.

[0058] Comparative Example 6 is a method for preparing a paper filter rod treated with a biological enzyme. The difference from Example 1 is that the fermentation conditions of the biological enzyme are different; 32°C, the fermentation time is 1h, and the fermentation pH is 5.5.

[0059] Comparative Example 7 is a method for preparing a paper filter rod treated with a biological enzyme. The difference from Example 1 is that the fermentation conditions of the biological enzyme are different; 32° C., fermentation time 1 h, fermentation pH 7.5.

[0060] Comparative Example 8: A traditional paper filter rod

[0061] The filter rods prepared according to the above experimental groups are used in cigarette preparation to obtain different cigarettes; the preparation method of the cigarettes is a conventional preparation method; the specifications of the cigarettes are not limited, and can be thin, medium or regular, and can also be ordinary cigarettes, dual-composite cigarettes and / or ternary composite cigarettes.

[0062] The sensory evaluation of smoking in the table below is based on the smoking and evaluation of cigarettes containing filter rods prepared by each experimental group after being opened (under normal temperature and humidity in room) after being stored for one year. The participants in the evaluation are 30 randomly selected smokers aged 25-60, 12 aged 25-35, and 18 aged 35-60. The same group of people were also selected to evaluate the taste of the paper filter rods before smoking.

[0063] Determination of the degree of moisture absorption: After the filter rod absorbs moisture, it is prone to deformation under force and has poor elasticity. According to GB / T 22838 "Determination of Physical Properties of Cigarettes and Filter Rods", the hardness of the filter rod is measured. The same pressure of 0.196 N is applied to the filter rod samples of each experimental group for 1.5 ± 0.5 s at an application speed of 0.6 mm / s. Record the rebound process of the filter rod after being pressed and record the diameter of the filter rod after stopping the rebound. The diameter of the filter rod samples of each experimental group in this application before being moisture-absorbed and pressed is 7 mm.

[0064] Initial moisture absorption time: It is the time when the filter rod starts to show slight wrinkles.

[0065] Table 1 Influence of Different Preparation Processes on Cigarette Filter Rods

[0066]

[0067]

[0068]

[0069]

[0070] As can be seen from the above table, the paper filter rods prepared in Examples 1-3 have no paper smell and have an obvious cigarette fragrance. This fragrance is more obvious in the first 10 days after opening the package, and then the smell is relatively light and fragrant; this light fragrance can be maintained until the moisture absorption stage. In addition, compared with the comparative examples, the paper filter rods prepared in Examples 1-3 absorb moisture later, starting to absorb moisture even on the 22nd or even 26th day; even after three months of opening the package and the degree of moisture absorption, the diameter of the filter rod after rebound can still reach 5.9 mm; the moisture absorption process is relatively slow. The reason is that the composite bio-enzyme in Examples 1-3 has a stronger ability to degrade lignin, and thus can effectively remove the woody odor and reduce the paper smell; in addition, the bio-enzyme and tobacco extract are added simultaneously at a constant speed. On the one hand, the bio-enzyme can modify the fiber cell wall of the slurry, making the fibers expand and become soft; when the bio-enzyme and the extract are added simultaneously at a constant speed, the effect of the bio-enzyme on the extract will not be so sufficient during the slow addition process. At this time, a part of the macromolecules in the extract are degraded by the composite bio-enzyme in Examples 1-3 into small molecule fragrance substances, and the fragrance is stronger and not too strong. The small molecule substances are more volatile, which is also the reason why the smell is more obvious in the first 10 days after opening the package. Because of the fast volatilization, after about 10 days of opening the package, the small molecule fragrance substances are volatilized completely; on the other hand, some macromolecule fragrance substances can adhere to the expanded fibers in the slurry on a large area; making the prepared paper have both better strength and fragrance substances that are not easily volatile for a long time, which is also the reason why the light fragrance in the filter rod lasts for a long time, and even can be maintained until the moisture absorption stage after opening the package.

[0071] Therefore, if you smoke it about 10 days after opening, the aroma will be more obvious; smokers can choose the time to smoke after opening according to their personal preferences.

[0072] Comparative Example 3, to which no tobacco extract was added, had no papery taste and no smoke flavor.

[0073] Comparative Examples 1 and 2 still have a slight papery smell, which indicates that the composite biological enzymes in Comparative Examples 1 and 2 cannot fully degrade the lignin in the slurry, and cannot effectively degrade some macromolecules in the tobacco extract.

[0074] Comparative Example 4 has no paper smell and a general tobacco flavor. The tobacco flavor is very light from beginning to end after opening. The reason is that in Comparative Example 4, the biological enzyme is added first and then the tobacco extract is added; because the biological enzyme has been in relatively sufficient contact with the slurry, it cannot effectively process some macromolecules in the extract into small molecules.

[0075] Comparative Example 5 has a slight papery smell and a general tobacco flavor. The tobacco flavor is very light from beginning to end after opening. The reason is that in Comparative Example 5, tobacco extract is added first and then biological enzyme is added. At this time, tobacco extract will be mixed with pulp. At this time, adding biological enzyme can only enzymatically hydrolyze and ferment the mixed state of the two; at this time, the pulp can only be partially hydrolyzed.

[0076] The filter rods prepared in Comparative Examples 6 and 7 were used in cigarettes, and the duration of the rich tobacco aroma during smoking was shorter than that of Examples 1 to 3, indicating that the fermentation conditions of the biological enzymes play a certain role in promoting the duration of tobacco aroma and the blocking of tar during smoking.

[0077] In the previous experiments, the present application also used alcohol extraction to prepare tobacco leaf extract, but found that the filter sticks prepared had mixed taste and poor sensory perception; therefore, water extraction was selected for preparation, and the reason may be that the extract prepared by water extraction can play a better role in promoting the biological enzyme fermentation process. Compared with water extraction, the extract prepared by alcohol extraction has a higher content of sugar and other components, which to a certain extent affects the degradation of some flavor substances in the biological enzyme fermentation process; thus affecting the sensory perception of the product.

[0078] The above is only the embodiment of the present application, and the protection scope of the present application is not limited by these specific embodiments, but is determined by the claims of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the technical ideas and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing a paper filter rod treated with a biological enzyme, It is characterized in that The steps include: Step 1: crushing and pulping the tobacco raw material, adding biological enzyme and tobacco extract at a uniform speed while pulping, stirring and fermenting, and obtaining tobacco cellulose pulp; Step 2: Mix tobacco cellulose pulp and bamboo cellulose pulp, make sheets, press and dry them to make a fiber paper base; the fiber paper base is coated and dried to make a tobacco fiber paper substrate; Step 3: Pressing and rolling the tobacco fiber paper substrate to obtain a filter element; wrapping the filter element with molding paper to obtain a tobacco fiber paper filter rod; The biological enzymes are at least two of xylanase, laccase, cellulase and ligninase; The tobacco extract is prepared by the following method: Step S1, preparing a tobacco leaf aqueous extract by water extraction of discarded tobacco leaves; Step S2: Mix glucose and alanine, add propylene glycol and tobacco leaf water extract as reaction base liquid, adjust the pH value of the system to 6.5-8.5, place in an oil bath, cool naturally to room temperature, filter and set aside.

2. The preparation method according to claim 1, It is characterized in that In step 1, the fermentation temperature of the biological enzyme is 30-50° C., the fermentation time is 1-3 hours, and the fermentation pH is 5.8-7.

2.

3. The preparation method according to claim 1, It is characterized in that In step 1, the amount of the biological enzyme added is 1 / 1000 to 3 / 10,000 of the weight of the wood pulp; the amount of the tobacco extract added is 1 / 5-1-3 of the weight of the biological enzyme.

4. The preparation method according to claim 1, It is characterized in that The fiber paper base coating process described in step 2 is: coating the coating liquid onto the cigarette paper by off-line gravure coating, with the speed controlled at 50-70 m / min, the oven temperature at 85-95° C., and drying.

5. The preparation method according to claim 1, It is characterized in that In step 2, the mass ratio of the tobacco cellulose pulp to the bamboo cellulose pulp is 3:0.2-2.

6. The preparation method according to claim 1, It is characterized in that The tobacco raw material is any one of tobacco leaves, tobacco stems and tobacco dust.

7. The preparation method according to claim 1, It is characterized in that The glucose and alanine are mixed in a molar ratio of 3-5:1; the added amounts of propylene glycol and tobacco leaf water extract are 0.3-0.8 times and 2-5 times of the total mass of glucose and alanine respectively.

8. The preparation method according to claim 1, It is characterized in that The oil bath conditions are: temperature 85-100° C., heating time 2-4 h.

9. Use of the preparation method according to claim 1 in the preparation of high-quality cigarettes.

10. A cigarette filter rod prepared by the preparation method according to claim 1.

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