CN113349404A - Radix isatidis reconstituted tobacco and preparation method and application thereof - Google Patents
Radix isatidis reconstituted tobacco and preparation method and application thereof Download PDFInfo
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- CN113349404A CN113349404A CN202110561059.8A CN202110561059A CN113349404A CN 113349404 A CN113349404 A CN 113349404A CN 202110561059 A CN202110561059 A CN 202110561059A CN 113349404 A CN113349404 A CN 113349404A
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- radix isatidis
- tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
- A24B15/241—Extraction of specific substances
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
- A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
Abstract
The invention provides radix isatidis reconstituted tobacco and a preparation method and application thereof. According to the invention, water-soluble substances in the radix isatidis raw material are fully extracted by adopting a water extraction mode, so that the wood miscellaneous gas of the prepared cigarette in the smoking process is reduced, the physicochemical property and sensory quality of the tobacco sheet are improved according to the advantages of low lignin content of herbaceous plant fiber and the like, and the complete pretreated radix isatidis material with uniform length and certain fibrillation phenomenon can be obtained by grinding to a specific grinding degree; the reconstituted tobacco prepared by mixing the pretreated radix isatidis material, the tobacco stems and the tobacco leaves according to a specific proportion not only can meet the physical performance of the reconstituted tobacco, but also has a good smoking effect, the cigarette has strong fragrance, the smoke is fine and soft, and no miscellaneous gas, and compared with GR60Z01 reconstituted tobacco, the wood gas score of the prepared cigarette is improved by at least 3 points (namely, the score is improved by 60%).
Description
Technical Field
The invention relates to the technical field of reconstituted tobacco, in particular to radix isatidis reconstituted tobacco and a preparation method and application thereof.
Background
The paper-making reconstituted tobacco is an industrialized reconstituted tobacco which is manufactured by utilizing tobacco wastes such as tobacco stems, tobacco powder, tobacco flakes, tobacco ash and the like through the working procedures of extraction, concentration, pulping, papermaking, coating, drying, slitting and the like. The reconstituted tobacco by the paper-making method becomes one of the essential components in the cigarette formula due to the advantages of loose tissue structure, filling property, absorptivity, combustibility, obvious tar and harm reducing effects and the like. However, since the strength of tobacco waste such as tobacco stems and tobacco powder is low, a certain amount of non-tobacco fibers such as wood pulp are generally required to be added to improve the strength of the raw material for processing, but the addition of the tobacco fibers such as wood pulp causes generation of wood miscellaneous gas during combustion of reconstituted tobacco, thereby causing negative effects such as burning stimulation and bitter aftertaste, and therefore, development of plant fibers capable of replacing wood pulp is required.
At present, cotton stalk bark fibers (such as Chinese patent CN105286078A), bamboo pulp fibers (such as Chinese patent CN103263073A) and the like are reported as alternative plant fibers, but the fibers belong to wood fibers or bamboo fibers, although the fiber strength is high, the smoking quality such as smell and the like still needs to be improved, and the existing reconstituted tobacco still has certain wood miscellaneous gas.
The isatis root (commonly known as indigowoad root, indigo root and dyer woad root) is a Chinese medicinal material, is a dry root of isatis indigotica of cruciferae, is in a shape of a slender cylinder, is about 10-30 cm long and has a diameter of 3-8 mm. The tobacco fiber is mainly distributed in Xinjiang, inner Mongolia, Shaanxi, Gansu, Hebei, Jiangsu, Zhejiang, Anhui, Guizhou and the like, is a green resource easy to regenerate, has rich sources and stable quality, belongs to short fiber, has more fiber content and long and thin fiber, and has higher similarity of fiber form and tobacco stem fiber. Herbaceous plant fibers have less lignin than wood fibers, and herbaceous plant fibers are shorter, so that the research on adding the herbaceous plant fibers into reconstituted tobaccos is not found. The isatis root is an easily-regenerated green resource and has the advantages of rich source, stable quality and good fiber quality.
Meanwhile, the isatis root is used as a traditional Chinese medicine, and the residue after pharmacy is usually treated by the other party, landfill and incineration, so that environmental pollution is easily caused.
Therefore, it is highly desirable to provide an environmentally friendly way to recycle the pharmaceutical residue of isatis root.
Disclosure of Invention
The invention provides a preparation method of radix isatidis reconstituted tobacco, aiming at overcoming the defects that in the prior art, the reconstituted tobacco generates wood miscellaneous gas during combustion to cause scorching stimulation and bitter aftertaste and the pharmaceutical residues of radix isatidis are not fully recycled.
The invention also aims to provide the radix isatidis reconstituted tobacco prepared by the preparation method.
The invention also aims to provide application of the radix isatidis reconstituted tobacco in preparation of cigarette products.
The invention also aims to provide a cigarette product prepared from the radix isatidis reconstituted tobacco.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of radix isatidis reconstituted tobacco comprises the following steps:
s1, raw material pretreatment:
extracting the raw material of the isatis root with water, grinding the mixture into thick liquid and drying the thick liquid to obtain a pretreated isatis root material;
s2, uniformly mixing the pretreated radix isatidis material with tobacco stems and tobacco powder, adding water and pulping to obtain reconstituted tobacco pulp;
s3, copying the reconstituted tobacco pulp obtained in the S2 into sheets to obtain the radix isatidis reconstituted tobacco;
wherein the mass ratio of the tobacco stems, the tobacco powder and the pretreated radix isatidis material in the S2 is 30-38: 45-57: 5-25;
s2, the medium beating degree is 40-55 degrees SR.
According to research, the invention discovers that the water-soluble substances of the isatis root are fully extracted by water extraction, and then the isatis root is ground to a specific beating degree, so that a relatively complete pretreated isatis root material with uniform length and a certain fibrillation phenomenon can be obtained; the reconstituted tobacco prepared by mixing the pretreated radix isatidis material, tobacco stems and tobacco powder in a specific ratio has a good smoking effect, and the cigarette has strong fragrance, fine and soft smoke and no miscellaneous gas.
Preferably, the radix isatidis raw material can be roots of radix isatidis plants, and can also be residues obtained after radix isatidis extract is extracted.
Preferably, the radix isatidis is selected from one or a combination of more of Sinkiang radix isatidis, Henan radix isatidis and Daqing radix isatidis. The specific chemical components of isatis roots in different producing areas are slightly different (see table 1), wherein lignin is an important component in the raw material of the plant fiber for paper making, and the content of lignin is different for different plants. The lignin can not only improve the bulk of the reconstituted tobacco, but also promote the combustion of the reconstituted tobacco, improve the combustion rate and indirectly influence the cigarette quality. The lignin content comprises acid soluble lignin and acid insoluble lignin content. The content of lignin in the radix isatidis is respectively 8.07 percent (Henan radix isatidis), 8.85 percent (Daqing radix isatidis) and 12.19 percent (Xinjiang radix isatidis), which are far higher than that of lignin in tobacco stem (5.41 percent) and tobacco powder (3.92 percent). Therefore, the addition of the isatis root fiber can obviously improve the bulk and the combustion rate of the tobacco sheet paper base, further improve the coating performance of the sheet paper base and the smoking quality of cigarettes and reduce the inhalation of harmful substances to human bodies.
TABLE 1 analysis of chemical composition of Isatis root
The residue after extracting the extract of isatis root can also be called the residue after preparing the isatis root.
In the invention, the product of water extraction of the radix isatidis root or the residue after extraction of the radix isatidis extract is recorded as the crude fiber of radix isatidis.
Because the content of water-soluble substances in the roots of the isatis roots or the residues after the isatis root extract is extracted is different and the state of fibers is also different, different extraction processes are required to be adopted for processing the isatis roots or the residues. The extraction process will have an influence on the morphology and strength of the obtained crude isatis root fibres. The proper ratio of the water of the isatis root raw material to the liquid (namely the ratio of the isatis root raw material to the water), the extraction temperature and the extraction time are selected to be beneficial to the subsequent grinding and papermaking process.
Fiber morphology refers to fiber length, width, uniformity of length and width, aspect ratio, wall thickness, wall to lumen ratio, content of non-fiber cells, and the like. The method is one of important bases for evaluating the quality of tobacco sheet raw materials in a papermaking method and determining process conditions. The radix isatidis pulp contains more fibers and has better interweaving degree, the performances of the two aspects are higher than those of tobacco powder and tobacco stems, and the number of mixed cells is less. During the pulping process, the fibers are strongly extruded, kneaded, twisted and the like, and the fibers are compressed and sheared, so that the obtained fibers are shorter than wood fibers.
The feed-to-liquid ratio is an important factor affecting the quality of the fiber. The water consumption during extraction is increased, so that soluble substances in the isatis root fiber can be fully dissolved out, the fiber is softened, and the later-stage pulping process is facilitated. However, the excessive water consumption not only causes water waste of enterprises and increases production cost, but also can destroy chemical components in the fiber, thereby causing the increase of fine fiber content, the reduction and loss of fiber quality and influencing the long fiber yield.
Preferably, the weight ratio of the isatis root raw material to the water is 1: 5-6, and more preferably 1: 6.
Because the residue after the isatis root extract is extracted is subjected to high-temperature cooking before pretreatment, most of water-soluble substances are dissolved out at the stage of the isatis root extract extraction compared with the isatis root plant root, and the strength of fiber is poor, the extraction temperature and the extraction time of the residue after the isatis root extract extraction are lower than those of the isatis root plant root; while the roots of the isatis root plants need to be extracted at a higher temperature and for a longer time, so as to fully extract the water-soluble substances in the plants and obtain proper fiber appearance and strength.
For the temperature, the fiber extraction quality is almost kept unchanged at the stage of 20-30 ℃. However, with the rise of temperature, the molecular motion is accelerated, the fiber structure is partially damaged, so that too many fine fibers are generated, and the quality of the isatis root fibers begins to decline; therefore, the production energy consumption and the fiber quality of enterprises are comprehensively considered, the optimal extraction temperature is 20-30 ℃, and the crude fiber is extracted at room temperature.
For time, the extraction yield of the isatis root quality fiber shows a gradual reduction trend along with the extension of the extraction time, but when the extraction time is in a certain interval, the extraction yield is greatly reduced, which indicates that the extraction time is too long, so that the isatis root fiber yield can be obviously reduced, and the fiber quality is damaged.
Preferably, when the radix isatidis raw material is the residue after the radix isatidis extract is extracted, the water extraction temperature of the radix isatidis raw material is 20-30 ℃, and the time is 75-120 min. Further preferably, the water extraction temperature of the radix Isatidis raw material is 28 deg.C, and the time is 90 min.
Preferably, when the radix isatidis raw material is the root of the radix isatidis plant, the water extraction temperature of the radix isatidis raw material is 70-100 ℃, and the time is 3-4 hours. In order to sufficiently extract water-soluble substances in the plant and to obtain appropriate fiber morphology and strength, the number of extraction is preferably multiple. However, with the increase of the extraction times, the production energy consumption and the fiber quality of enterprises are comprehensively considered during the second and more times of extraction, and the extraction temperature and time need to be properly reduced.
Further preferably, when the radix Isatidis raw material is the root of the radix Isatidis plant, the radix Isatidis raw material is boiled at 100 deg.C for 4 h; extracting at 70 deg.C for 3 hr.
Preferably, the refining in step S1 is a two-stage refining, the refining process being: the clearance of the first section of grinding is 0.3-0.5 mm; the clearance of the second section of grinding is 0.1-0.25 mm. The two-stage grinding can obtain relatively complete fiber with certain strength after grinding, and the fiber has uniform length and certain devillicate brooming phenomenon, so that the material strength can meet the preparation conditions of the reconstituted tobacco.
Further preferably, the refining process in step S1 is: the clearance of the first section of grinding is 0.4 mm; the clearance of the second refining stage is 0.2 mm.
The beating degree of the isatis root raw material can affect the crude fiber yield. Preferably, the beating degree in the step S1 is 57-60 DEG SR, and further preferably 58-59.5 DEG SR.
The tobacco stems and the tobacco powder are subjected to grinding treatment, and the conventional grinding process of the tobacco stems and the tobacco powder in the conventional reconstituted tobacco can be used for the tobacco stem and the tobacco powder grinding process.
Preferably, the processing technology of the tobacco stems or the tobacco powder in the step S2 is as follows: extracting the tobacco stems or the tobacco powder and water at a weight ratio of 1:5 at 25-30 ℃ for 4h, and grinding the mixture to obtain the treated tobacco stems or the treated tobacco powder.
Further preferably, in step S2, the beating degree of the tobacco stems is 37 ° SR; the degree of beating of the tobacco powder is 45 DEG SR.
The physical properties of the tobacco sheet paper bases with different proportions are greatly different. Preferably, the mass ratio of the tobacco stems, the tobacco powder and the pretreated radix isatidis material in the step S2 is 28-36: 48-54: 10-20, and more preferably 35:50: 15.
Radix isatidis reconstituted tobacco leaves are prepared by the method.
Preferably, the radix isatidis reconstituted tobacco is used for fixingThe amount of the organic solvent is 60 to 120g/m2。
The application of the radix isatidis reconstituted tobacco in preparing cigarette products is also within the protection scope of the invention.
The cigarette product prepared from the radix isatidis reconstituted tobacco is also within the protection scope of the invention.
Compared with the prior art, the invention has the beneficial effects that:
according to the preparation method, the water-soluble substances in the radix isatidis raw material are fully extracted in a water extraction mode, so that the wood miscellaneous gas of the prepared cigarette in the smoking process is reduced, the physicochemical property and sensory quality of the tobacco sheet are improved according to the advantage of low lignin content of herbal plant fiber, and the complete pretreated radix isatidis material with uniform length and certain fibrillation phenomenon can be obtained by grinding the pulp to a specific pulp grinding degree; the reconstituted tobacco prepared by mixing the pretreated radix isatidis material, the tobacco stems and the tobacco leaves according to a specific proportion not only can meet the physical performance of the reconstituted tobacco, but also has a good smoking effect, the cigarette has strong fragrance, the smoke is fine and soft, and no miscellaneous gas, and compared with GR60Z01 reconstituted tobacco, the wood gas score of the prepared cigarette is improved by at least 3 points (namely, the score is improved by 60%).
Drawings
FIG. 1 is a fiber topography of Isatis root material after the first stage refining in S11 in example 1;
fig. 2 is a fiber topography of the isatis root material after the second stage of refining in S11 in example 1.
Detailed Description
The present invention will be further described with reference to the following specific examples and drawings, which are not intended to limit the invention in any manner. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated. Unless otherwise indicated, reagents and materials used in the present invention are commercially available.
Example 1
The embodiment provides radix isatidis reconstituted tobacco, and the preparation method comprises the following steps:
s1, raw material pretreatment
S11 preparation of pretreated radix Isatidis Material
Extracting the residue (supplied from Baiyunshan pharmaceutical factory) after radix Isatidis extract extraction with water at weight ratio (material-liquid ratio) of 1:6 at 28 deg.C for 90min to obtain residue of crude fiber of radix Isatidis;
grinding the crude fiber of the radix isatidis by a high-concentration millstone machine (KPK-2500II, K disk, the diameter of the millstone is 300mm), grinding the crude fiber of the radix isatidis into pulp, grinding the pulp at the first section under the condition that the pulp grinding gap is 0.4mm, and screening the pulp by a Messmer Somerville pulp screening machine (the model of the machine is S401700001, and the width of a screen slot is 0.25mm) after grinding the pulp; then, the screened pulp is subjected to second-stage pulping under the condition that the pulping clearance is 0.2mm, and is screened by a Messmer Somerville pulp screen (the model of the machine is S401700001, the width of a screen slot is 0.25mm) to obtain fine pulp (the grain size of the pulp is less than 0.25mm) with the pulping degree of 58.67 degrees SR, and the pretreated isatis root material is obtained after drying;
s12, tobacco stem and tobacco powder treatment
Leaching tobacco stems and water for 4 hours at room temperature (25-30 ℃) according to the mass ratio of 1:5 to obtain residue, preparing the obtained residue into slurry with the concentration of 10%, selecting a high-concentration millstone machine (KPK-2500II, K disk and millstone diameter of 300mm), grinding the slurry twice, wherein the grinding gaps are 1.0mm and 0.6mm respectively to obtain tobacco stem slurry with the beating degree of 37 DEG SR, and drying to obtain treated tobacco stems;
soaking and extracting tobacco powder and water at room temperature (25-30 ℃) for 4 hours according to the mass ratio of 1:5 to obtain residue, preparing the obtained residue into slurry with the concentration of 10%, selecting a high-concentration millstone machine (KPK-2500II, K disk and millstone diameter of 300mm), grinding the slurry twice, wherein the grinding gaps are 1.0mm and 0.6mm respectively to obtain tobacco powder slurry with the beating degree of 45 DEG SR, and drying to obtain treated tobacco powder;
s2, pulping
Uniformly mixing the treated tobacco stems, the treated tobacco powder and the pretreated radix isatidis material according to the weight ratio of 35:50:15, adding water to prepare a reconstituted tobacco mixture with the concentration of 10%, and pulping the mixture to 40-55 DEG SR by using a Mark V1 type PFI mill (HAMJERN MASKIN 621) to obtain reconstituted tobacco pulp;
s3, papermaking
Adopting a Kaiser method automatic paper-making system (RK3AKWT) to make reconstituted tobacco pulp (the ration according to the paper base is 100 g/m)2) Then obtaining the radix isatidis reconstituted tobacco substrate;
and (3) treating the isatis root reconstituted tobacco substrate for 48 hours under the conditions that the relative humidity is 60 +/-2% and the temperature is 22 +/-1 ℃, and then shredding to obtain the isatis root reconstituted tobacco.
Example 2
The embodiment provides an isatis root reconstituted tobacco, and the preparation method of the isatis root reconstituted tobacco is different from that of embodiment 1 in that the material-liquid ratio in step S11 is 1: 4.
Example 3
The embodiment provides an isatis root reconstituted tobacco, and the preparation method of the isatis root reconstituted tobacco is different from that of embodiment 1 in that the material-liquid ratio in step S11 is 1: 5.
Example 4
The embodiment provides an isatis root reconstituted tobacco, and the preparation method of the isatis root reconstituted tobacco is different from that of embodiment 1 in that the material-liquid ratio in step S11 is 1: 7.
Example 5
The embodiment provides an isatis root reconstituted tobacco, and the preparation method of the isatis root reconstituted tobacco is different from that of embodiment 1 in that the material-liquid ratio in step S11 is 1: 8.
Example 6
This example provides an isatis root reconstituted tobacco, which is different from example 1 in that the extraction temperature in step S11 is 20 ℃.
Example 7
The present example provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that of example 1 in that the extraction temperature in step S11 is 40 ℃.
Example 8
The present example provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that of example 1 in that the temperature of extraction in step S11 is 50 ℃.
Example 9
The present embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that in embodiment 1 in that the extraction time in step S11 is 75 min.
Example 10
The present example provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that of example 1 in that the extraction time in step S11 is 105 min.
Example 11
The present embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that in embodiment 1 in that the extraction time in step S11 is 120 min.
Example 12
This example provides an isatis root reconstituted tobacco, which is different from example 1 in that the gap between the first stage refining in step S11 is 0.5 mm.
Example 13
This example provides an isatis root reconstituted tobacco, which is different from example 1 in that the gap between the first stage refining in step S11 is 0.3 mm.
Example 14
This example provides an isatis root reconstituted tobacco, which is different from example 1 in that the gap between the second stage refining in step S11 is 0.1 mm.
Example 15
This example provides an isatis root reconstituted tobacco, which is prepared by a method different from that of example 1 in that the gap between the second stage refining in step S11 is 0.25 mm.
Example 16
The present embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that in embodiment 1, in step S2, the weight ratio of the treated tobacco stems, the treated tobacco powder and the isatis root is 38:57: 5.
Example 17
The present embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that in embodiment 1, in step S2, the weight ratio of the treated tobacco stems, the treated tobacco powder and the isatis root is 36:54: 10.
Example 18
The present embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that in embodiment 1, in step S2, the weight ratio of the treated tobacco stems, the treated tobacco powder and the isatis root is 32:48: 20.
Example 19
The present embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that in embodiment 1, in step S2, the weight ratio of the treated tobacco stems, the treated tobacco powder and the isatis root is 30:45: 25.
Example 20
The embodiment provides an isatis root reconstituted tobacco, and the preparation method thereof is different from that of embodiment 1 in that the isatis root raw material is the root of annual isatis root produced in daqing, and the preparation process of isatis root crude fiber in step S11 is as follows:
boiling radix Isatidis raw material and water at a ratio of 1:5 at 100 deg.C for 4 hr; then extracting at 70 ℃ for 3h to obtain the crude fiber of the isatis root.
Example 21
The embodiment provides radix isatidis reconstituted tobacco, and the preparation method of the radix isatidis reconstituted tobacco is different from that in embodiment 20 in that the radix isatidis raw material is roots of annual radix isatidis produced in Henan.
Comparative example 1
This comparative example is different from example 20 in that the extraction medium for the crude fiber of isatis root in step S11 is benzyl alcohol.
Comparative example 2
The comparative example is different from example 1 in that the weight ratio of the treated tobacco stems, the treated tobacco powder and the radix isatidis in step S2 is 30:40: 30.
Comparative example 3
The comparative example is different from example 1 in that the weight ratio of the treated tobacco stems, the treated tobacco powder and the radix isatidis in step S2 is 33:45: 2.
Comparative example 4
The comparative example provides a commercial reconstituted tobacco with added wood pulp fiber, model number GR60Z 01.
Performance testing
1. Characterization of pretreated isatis root material: the morphology, the crude fiber yield and the dissolution rate of water-soluble substances of the pretreated isatis root material prepared in the embodiment 1-9 are characterized and tested;
wherein the morphology of the pretreated isatis root material is characterized by using a research-grade positive microscope (OLYMPUS BX51TFK), and the sample preparation method comprises the following steps: drying the isatis root material obtained after the first-stage and second-stage grinding in the step S11 of example 1 to constant weight (absolute dry), taking 0.1g of the dried sample, placing the dried sample in a 250mL conical flask, adding 150mL of distilled water, fully shaking, dispersing and uniformly mixing, sucking 4 drops of suspension by a dropper, placing the suspension on a glass slide, placing the glass slide on an electric heating plate at 60 ℃ for drying, cooling the dried sample, dyeing the glass slide for one minute by a safranin coloring agent, covering a cover glass, sucking away excess liquid by filter paper, finishing lens preparation, and obtaining a test result shown in figures 1-2, wherein figure 1 is a fibrous morphology figure of the isatis root material after the first-stage grinding in the step S11, the isatis root material is blocky, and the phenomenon of fibrous brooming is not obvious; FIG. 2 is a fiber morphology diagram of the radix Isatidis material after the second stage of refining in S11, with a certain devillicate brooming phenomenon;
the crude fiber yield (%) was calculated as: m1/M0*100％；
The dissolution rate (%) of the water-soluble substance is (M)0-M1)/M0*100％；
In the formula, M1The weight (g) of the crude fiber of the isatis root is absolute dry weight; m0Is 100 percent of the weight (g) of the isatis root raw material;
the test results are shown in Table 1.
2. Characterization of pretreated Isatis root Material after grinding
The fine pulp yield, the coarse pulp yield and the beating degree of the grinded pretreated isatis root material prepared in the embodiment 1 and the embodiments 11 to 13 are tested, wherein the calculation formulas of the fine pulp yield (X, 100%) and the coarse pulp yield (Y, 100%) are as follows:
X＝m2/m1*100％
in the formula, m1The absolute dry weight (g) of the raw materials before grinding into thick liquid, m2The absolute dry weight (g) of the fine pulp after grinding;
and (3) selecting a Shabor-Ruegler beating degree tester to test the beating degrees of the coarse pulp and the fine pulp.
The test results are shown in Table 2.
3. Characterization of the papermaking Properties of Isatis root
Sample preparation: the pretreated isatis root materials prepared in the examples and the comparative examples are ground according to the grinding process in the example 1, and the isatis root pulp is sliced by adopting a Kaiser method automatic paper-making system (RK3AKWT) (the basis weight of the paper base is 100 g/m)2) Then obtaining the isatis root paper base.
And (3) testing: bulk (cm) of the obtained radix Isatidis paper base3The results of the measurements are shown in Table 3, air permeability (measured according to the standard GB/T458-2002), tensile strength (measured according to the standard GB/T12914-.
4. Evaluation of smoking performance of radix isatidis reconstituted tobacco in cigarettes
The reconstituted tobacco prepared in the above examples and comparative examples is added into a 'double happiness (hard)' cigarette with the addition of 8%, and the cigarette is prepared. The smoking performance of the prepared cigarette is evaluated by a scoring method (the average score of 7 smoking experts), wherein the higher the score is, the better the aroma quality is, the stronger the smoke concentration is, the fine degree is, the wood gas is less, and the irritation is low.
The evaluation results are shown in Table 4.
TABLE 1 Effect of the extraction Process on crude fiber of Isatis root
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Crude fiber yield/%) | 85.21 | 91.94 | 86.64 | 80.61 | 76.05 | 84.94 |
| The dissolution rate of water-soluble substances/%) | 14.79 | 8.06 | 13.36 | 19.39 | 23.95 | 15.06 |
| Example 7 | Example 8 | Example 9 | Example 10 | Example 11 | ||
| Crude fiber yield/%) | 78.33 | 77.64 | 85.81 | 77.36 | 75.43 | |
| The dissolution rate of water-soluble substances/%) | 21.67 | 22.36 | 14.19 | 22.64 | 24.57 |
。
As can be seen from table 1:
the results of examples 1-5 show that the liquor-to-liquor ratio of the crude isatis root fiber extraction affects the yield of crude fiber, and the yield is reduced along with the increase of the water consumption, because the distilled water consumption during extraction is increased, soluble substances in the raw isatis root material can be fully dissolved out, the fiber is softened, and the later-stage pulping process is facilitated; however, if the water consumption is too large, chemical components in the fibers can be damaged, so that the fibers are broken into fine powder and cannot be collected, and the yield of the fibers is reduced; when the feed-liquid ratio is 1:4 (example 2), although the fiber yield is high, the fibers extracted from the feed-liquid ratio are blocky, the fiber brooming phenomenon is not obvious, and the later refining process is not facilitated; the proper material-liquid ratio condition (such as 1:5 of example 1) is favorable for extracting the more complete crude isatis root fiber with certain fibrillation phenomenon (figure 2), and the yield is higher and reaches 85.21%.
The results of examples 1 and 6 to 8 show that when the radix isatidis pharmaceutical residue is selected as a raw material, the molecular motion is accelerated with the increase of the extraction temperature, the fiber structure is partially destroyed, so that too many fine fibers are generated, and the yield of crude fibers of radix isatidis begins to decrease, so that the crude fibers can be extracted from the radix isatidis pharmaceutical residue at room temperature (20 to 30 ℃). In examples 20 to 21, the roots of the isatis root plant are selected as the raw material, and the water-soluble components in the isatis root can be completely dissolved out only by high-temperature cooking.
The results of examples 1 and 9 to 11 show that the yield of crude fiber of isatis root gradually decreases with the increase of extraction time, but considering the completeness of the dissolution rate of water-soluble substances, it can be seen that the yield of crude fiber and the dissolution rate of water-soluble substances are better when the extraction time is 90 min.
TABLE 2 influence of refining parameters on Isatis root pulp
| Example 1 | Example 12 | Example 13 | Example 14 | Example 15 | |
| Fine pulp yield/% | 84.98 | 84.53 | 83.62 | 82.46 | 79.57 |
| Fine pulp beating degree/degree SR | 58.67 | 55.62 | 58.65 | 55.43 | 59.36 |
。
As can be seen from the results of table 2:
the results of examples 1 and 10-11 show that the two-stage refining gap affects the final fine pulp yield and the beating degree of the fine pulp, and the proper refining process is beneficial to obtaining higher fine pulp yield and better beating degree and forming uniform fiber pulp, and the prepared reconstituted tobacco paper base has better tensile strength (see table 3).
TABLE 3 physical Properties of the Isatis root paper base
As can be seen from table 3: the bulk, air permeability, tearing strength and tensile strength of the isatis root paper-based material prepared by the embodiment of the invention all meet the industrial requirements. And as can be seen from the embodiment 1 and the embodiments 16 to 19, with the increase of the content of the pretreated isatis root material, the bulk and the tensile strength of the paper base both show a rising trend; however, if the addition amount of the pretreated isatis root material is too large and the tensile strength is too high (as in comparative example 2), the subsequent processing performance, softness, mouthfeel and other sensory qualities of the tobacco sheet are reduced (see table 4); if the addition amount of the pretreated isatis root material is too small and the tensile strength is too low (as in comparative example 3), the normal operation of a paper machine is influenced, paper breaking is caused, and the production efficiency of enterprises is reduced.
TABLE 4 cigarette smoking evaluation (Scoring)
As can be seen from Table 4, the smoke concentration shows a continuous and strong trend along with the increase of the addition amount of the pretreated isatis root material in the isatis root reconstituted tobacco, but the wood gas and the irritation are increased, and the overall aroma quality shows a trend of increasing firstly and then decreasing.
Comparative example 1 the cigarette prepared by the method of water extraction of the present invention was not selected, and the woody gas and irritation were heavy; comparative example 2 because the content of the added pretreated radix isatidis material is too much, the tensile strength is too high, the subsequent processing performance and the flexibility of the tobacco sheet can be reduced, the tobacco sheet is not uniformly dispersed in the cigarette, the fineness of smoke is reduced, and the wood gas and the irritation of the prepared cigarette can be increased and the smoking feeling can be reduced by adding a large amount of the pretreated radix isatidis material; comparative example 3 because the content of the pretreated radix isatidis material added in the reconstituted tobacco is low, the prepared reconstituted tobacco has poor tensile strength, normal operation of a paper machine is affected, paper breaking is caused, the production efficiency of enterprises is reduced, the smoke concentration of the prepared cigarette is also affected, and the smoking feeling is further reduced; comparative example 4 is reconstituted tobacco to which wood pulp fiber was conventionally added, and it can be seen from comparison with examples that the wood gas generated by combustion in cigarettes was significantly improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The preparation method of the radix isatidis reconstituted tobacco is characterized by comprising the following steps:
s1, raw material pretreatment:
extracting the raw material of the isatis root with water, grinding the mixture into thick liquid and drying the thick liquid to obtain a pretreated isatis root material;
s2, uniformly mixing the pretreated radix isatidis material with tobacco stems and tobacco powder, adding water and pulping to obtain reconstituted tobacco pulp;
s3, copying the reconstituted tobacco pulp obtained in the S2 into sheets to obtain the radix isatidis reconstituted tobacco;
wherein in the step S2, the mass ratio of the tobacco stems, the tobacco powder and the pretreated radix isatidis material is 30-38: 45-57: 5-25;
s2, the beating degree of the reconstituted tobacco pulp is 40-55 degrees SR.
2. The method for preparing radix isatidis reconstituted tobacco according to claim 1, wherein in S1, the radix isatidis raw material is radix isatidis or residue after radix isatidis extract extraction.
3. The preparation method of radix isatidis reconstituted tobacco according to claim 2, wherein S1, the radix isatidis raw material and water are in a weight ratio of 1: 5-6.
4. The preparation method of radix isatidis reconstituted tobacco according to claim 2, wherein in S1, when the radix isatidis raw material is residue after radix isatidis extract extraction, the extraction temperature is 20-30 ℃, and the extraction time is 75-120 min;
when the radix isatidis raw material is the root of an radix isatidis plant, the water extraction process of the radix isatidis raw material comprises the following steps: the extraction temperature is 70-100 ℃, and the extraction time is 3-4 h.
5. The method for preparing the radix isatidis reconstituted tobacco according to claim 1, wherein in the step S1, the grinding is performed in two stages, and the gap between the first stage and the first stage is 0.3-0.5 mm; the clearance of the second section of grinding is 0.1-0.25 mm.
6. The preparation method of radix isatidis reconstituted tobacco according to claim 1, wherein the beating degree in step S1 is 57-60 ° SR.
7. The preparation method of radix isatidis reconstituted tobacco according to claim 1, wherein the mass ratio of the tobacco stems and the tobacco powder in the step S2 to the pretreated radix isatidis material in the step S2 is 28-36: 48-54: 10-20.
8. A radix isatidis reconstituted tobacco, which is characterized by being prepared by the preparation method of any one of claims 1 to 8.
9. The use of the reconstituted tobacco from radix Isatidis as claimed in claim 8 in the preparation of a smoking article.
10. A smoking article prepared from the reconstituted tobacco of isatis root according to claim 8.
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Citations (3)
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| CN101558907A (en) * | 2009-05-14 | 2009-10-21 | 项涛 | Cigarette |
| CN102960848A (en) * | 2012-11-07 | 2013-03-13 | 广东中烟工业有限责任公司 | Application of citronella slag in cigarette manufacturing and preparation method of tobacco leaves reconstituted from citronella |
| US20140216481A1 (en) * | 2010-12-07 | 2014-08-07 | Steven R. Freeman | Vegetable based tobacco alternatives and articles comprising same |
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- 2021-05-21 CN CN202110561059.8A patent/CN113349404A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558907A (en) * | 2009-05-14 | 2009-10-21 | 项涛 | Cigarette |
| US20140216481A1 (en) * | 2010-12-07 | 2014-08-07 | Steven R. Freeman | Vegetable based tobacco alternatives and articles comprising same |
| CN102960848A (en) * | 2012-11-07 | 2013-03-13 | 广东中烟工业有限责任公司 | Application of citronella slag in cigarette manufacturing and preparation method of tobacco leaves reconstituted from citronella |
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