CN113712239A - Preparation method of high-nicotine paper-making reconstituted tobacco with burley tobacco particles as filler - Google Patents
Preparation method of high-nicotine paper-making reconstituted tobacco with burley tobacco particles as filler Download PDFInfo
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Abstract
The invention discloses a preparation method of high nicotine type paper-making reconstituted tobacco with burley tobacco particles as filler, which comprises the steps of burley tobacco particle preparation, tobacco stem raw material extraction, tobacco leaf fragment raw material extraction, extracting solution concentration, solid matter pulping, slurry blending, sheet base papermaking, coating liquid blending and coating and the like, wherein the paper-making reconstituted tobacco takes the burley tobacco particles as filler to replace the traditional inorganic fillers such as calcium carbonate, silicon dioxide and the like, can effectively utilize the waste resources of the burley tobacco, the raw materials are easy to obtain, the invention utilizes the characteristics of high alkali content and high absorptivity to feed liquid of the burley tobacco, compared with the reconstituted tobacco prepared under the same process conditions and using inorganic substances such as calcium carbonate, silicon dioxide and the like as fillers, the reconstituted tobacco using the burley tobacco particles as the fillers has the advantages that the nicotine content can be improved by more than 15%, the problem of low nicotine content of the traditional reconstituted tobacco is solved, and the smoking quality is obviously improved. The method has simple process and convenient and easy operation, and can be synchronously implemented in the production and processing process of the reconstituted tobacco.
Description
Technical Field
The invention relates to a preparation method of reconstituted tobacco by a paper-making process, in particular to a preparation method of high-nicotine reconstituted tobacco by a paper-making process, which takes burley tobacco particles as filler.
Background
The paper-making method reconstituted tobacco uses waste tobacco stems, tobacco powder, tobacco fragments and other tobacco as raw materials, and is made into a sheet-shaped or filiform regenerated product through the processes of extraction, pulping, concentration, papermaking, drying and the like, and the regenerated product is used as a filling material of cigarettes. The paper-making reconstituted tobacco has the characteristics of good combustion performance, filling degree, low tar release amount and the like, and the application range and the proportion of the paper-making reconstituted tobacco in cigarettes are continuously expanded as a tar reduction means. The reconstituted tobacco plays an important role in cigarette production, so that the cigarette cost can be reduced, and the internal quality of cigarettes can be improved.
Nicotine is a specific component of tobacco, and is an important alkaloid in tobacco and one of important quality indexes of cigarette smoke. The paper-making reconstituted tobacco is prepared by extracting, papermaking and the like by utilizing tobacco waste, and the nicotine content of the reconstituted tobacco is lower, so that the reconstituted tobacco has a larger difference with tobacco. The burley tobacco has high nicotine content, low sugar content, low tar release amount during combustion, strong smoldering fire protection power and special strong fragrance of leaves. The burley tobacco has larger and thin leaf, loose tissue, strong elasticity, high filling force and good material absorbing capacity, and can absorb a large amount of feed liquid added in the processing process, so the burley tobacco not only has high nicotine content, but also has good absorbability and aroma retention performance.
Chinese patent CN103519340B discloses a method for preparing tobacco paper-making method sheets by taking burley stems as raw materials, which takes the burley stems as one of the raw materials and takes flue-cured tobacco powder and other raw materials as auxiliary materials, and the tobacco paper-making method sheets are prepared by a paper-making method; chinese patent CN108477662B provides a manufacturing process of reconstituted tobacco with the characteristics of burley tobacco, which is a process for preparing reconstituted tobacco by taking burley tobacco leaves and tobacco stems as raw materials of the reconstituted tobacco, adding enzyme for extraction and then preparing according to a reconstituted tobacco method; chinese patent CN102934837A discloses a method for preparing a mixed reconstituted tobacco with a partial burley tobacco style, which is characterized in that the raw material contains burley tobacco leaves; chinese patent CN106333383B provides a preparation method of burley tobacco reconstituted tobacco suitable for flue-cured tobacco flavor; chinese patent CN103653232B discloses a reconstituted tobacco production process for covering up the characteristic aroma of burley tobacco. According to the technical scheme, burley tobacco is used as one of the raw materials of the reconstituted tobacco, and the burley tobacco is mixed with other raw materials to prepare the reconstituted tobacco in the same modes of extraction, enzyme treatment or steam treatment and the like as the flue-cured tobacco raw materials of the reconstituted tobacco. Therefore, the application approach of the burley tobacco in the reconstituted tobacco is widened, and the high nicotine reconstituted tobacco is needed to be developed.
Disclosure of Invention
The invention provides a preparation method of high-nicotine paper-making reconstituted tobacco by taking burley tobacco particles as filler, which aims to solve the problems in the prior art.
In order to realize the purpose of the invention, the preparation method of the high-nicotine paper-making reconstituted tobacco with burley tobacco particles as the filler is characterized by comprising the following steps:
a. burley tobacco particle preparation
Crushing the dried burley tobacco raw material into 100-150-mesh burley tobacco particles;
b. extraction of tobacco stalk material
Mixing tobacco stems with water according to a mass ratio of 1: 5-8, then carrying out countercurrent extraction at 80-90 ℃, carrying out solid-liquid separation after extraction for 30-45 min to obtain solid tobacco stems and tobacco stem extracting solution;
c. tobacco fragment raw material extraction
Mixing the tobacco leaf fragment raw materials with water according to the mass ratio of 1: 6-10, carrying out countercurrent extraction at the temperature of 60-80 ℃, carrying out solid-liquid separation after extraction for 30-45 min to obtain tobacco leaf fragment solid matters and tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extracting solution and the tobacco leaf fragment extracting solution under the conditions of vacuum degree of 30-60 mbar and temperature of 60-80 ℃ until the solid content of the solution is 35-60%, so as to obtain stem paste and leaf paste;
e. solid material grinding
C, adding water into the solid tobacco stems obtained in the step b, blending into a mixture with the concentration of 1.0-4.0%, and grinding into slurry to obtain tobacco stem slurry with the concentration of 12-50 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c to prepare a mixture with the concentration of 1.0-4.0%, and grinding the mixture to obtain 12-50 ︒ SR tobacco leaf fragment pulp; adding water into the external fiber to prepare a mixture with the concentration of 1.0-4.0%, and grinding the mixture to obtain external fiber pulp of 16-47 ︒ SR;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the outer fiber pulp and the burley tobacco particles obtained in the step a according to a mass ratio of 30-60: 5-10: 10-30, adding water to prepare a mixed pulp of 2.0-4.5%, and then sequentially forming, squeezing and drying to obtain a reconstituted tobacco leaf base sheet with the water content of 12-38%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 40-70: 30-60 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base obtained in the step f according to the coating rate of 30-45%, and squeezing and drying the base and the base in sequence to obtain the high nicotine type reconstituted tobacco with the water content of 9.5-12.5%.
The burley tobacco raw material adopts any one or a mixture of more than one of burley tobacco leaves, burley tobacco stems, burley tobacco fragments or burley tobacco powder in any proportion.
The additional fiber is needle leaf pulp, broad leaf pulp, bamboo pulp or hemp pulp.
The invention has the beneficial technical effects that: the reconstituted tobacco prepared by the paper-making method takes burley tobacco particles as filler to replace the traditional inorganic filler such as calcium carbonate, silicon dioxide and the like, so that the waste resources of burley tobacco can be effectively utilized, and the raw materials are easy to obtain; secondly, by utilizing the characteristics of high alkali content and high absorptivity to feed liquid of burley tobacco, compared with the reconstituted tobacco which is prepared under the same process conditions and takes inorganic substances such as calcium carbonate, silicon dioxide and the like as fillers, the nicotine content of the reconstituted tobacco which takes burley tobacco particles as fillers can be improved by more than 15 percent, the problem of low nicotine content of the traditional reconstituted tobacco is solved, and the smoking quality is obviously improved. The method has simple process and convenient and easy operation, and can be synchronously implemented in the production and processing process of the reconstituted tobacco.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the following examples.
Example 1:
a. preparation of burley tobacco particle filler
Putting the dried burley tobacco leaves into a high-speed grinding machine for grinding, and obtaining burley tobacco leaf particles after passing through a 100-mesh sieve;
b. extraction of tobacco stalk material
Extracting Yunnan tobacco stems by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water in a mass ratio of 1:6, performing countercurrent extraction at 80 ℃, and performing solid-liquid separation after extraction for 35min to respectively obtain solid tobacco stems and tobacco stem extracting solution;
c. tobacco fragment raw material extraction
Extracting Yunnan tobacco leaf fragment raw materials by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf raw material and water in a mass ratio of 1:9, carrying out countercurrent extraction at 60 ℃, carrying out solid-liquid separation after 35min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of vacuum degree of 40mbar and temperature of 80 ℃ until the solid content of the solution is 40% to obtain stem paste and leaf paste;
e. solid material grinding
Adding water into the solid tobacco stems obtained in the step b, thickening the mixture to 3.0% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 40 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c, thickening the mixture to a mass concentration of 3.5%, and grinding the mixture to obtain 30 ︒ SR tobacco leaf fragment pulp; adding water into the needle blade pulp board to adjust the consistency to 4.0 mass percent of the mixture, and grinding the mixture to obtain 47 ︒ SR needle blade pulp;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the needle leaf pulp and the burley tobacco leaf particles obtained in the step a according to the absolute dry mass ratio of 48:37:5:10, adding water to prepare mixed pulp with the mass concentration of 3%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base with the water content of 30%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 40:60 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 40%, and squeezing and drying the coating liquid in sequence to obtain the high-nicotine paper-making process reconstituted tobacco with the water content of 11.5%.
Example 2:
a. preparation of burley tobacco particle filler
Putting the dried burley tobacco stems into a high-speed grinding machine for grinding, and obtaining burley tobacco stem particles after passing through a 150-mesh sieve;
b. extraction of tobacco stalk material
Extracting the tobacco stems in Hebei river by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing burley tobacco stems with water according to the mass ratio of 1:5, performing countercurrent extraction at 85 ℃, and performing solid-liquid separation after extraction for 45min to obtain solid tobacco stems and tobacco stem extracting solution respectively;
c. tobacco fragment raw material extraction
Extracting the tobacco fragment raw materials in Hebei by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf fragment raw materials with water according to a mass ratio of 1:10, carrying out countercurrent extraction at 70 ℃, carrying out solid-liquid separation after 45min of extraction to respectively obtain tobacco powder solid matters and tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Concentrating the tobacco stem extract and the tobacco leaf fragment extract respectively under the conditions of vacuum degree of 60mbar and 70 ℃ until the solid content of the solution is 50% to obtain stem extract and leaf extract;
e. solid material grinding
B, adding water into the solid tobacco stems obtained in the step b, thickening the mixture to 4.0% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 50 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c, thickening the mixture to a mass concentration of 3.0%, and grinding the mixture to obtain 40 ︒ SR tobacco leaf fragment pulp; adding water into the broad-leaved pulp board, thickening the mixture to 3.5% of mass concentration, and grinding the mixture to obtain broad-leaved pulp of 40 ︒ SR;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the broad leaf pulp and the burley tobacco stem particles obtained in the step a according to the absolute dry mass ratio of 40:40:5:15, adding water to prepare mixed pulp with the mass concentration of 3%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base with the water content of 12%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 60:40 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 30%, and squeezing and drying the coating liquid in sequence to obtain the high-nicotine paper-making process reconstituted tobacco with the water content of 12.5%.
Example 3:
a. preparation of burley tobacco particle filler
Respectively putting the dried burley tobacco leaves and burley tobacco stems into a high-speed pulverizer for pulverizing, and respectively obtaining burley tobacco leaf particles and burley tobacco stem particles after passing through a 100-mesh sieve;
b. extraction of tobacco stalk material
Extracting the tobacco stems in Hebei river by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water according to a mass ratio of 1:8, performing countercurrent extraction at 80 ℃, and performing solid-liquid separation after extraction for 30min to respectively obtain solid tobacco stems and tobacco stem extracting solution;
c. tobacco fragment raw material extraction
Extracting the tobacco fragment raw materials in Hebei by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf fragment raw materials with water according to a mass ratio of 1:6, carrying out countercurrent extraction at 80 ℃, carrying out solid-liquid separation after 30min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of vacuum degree of 50mbar and 80 ℃ until the solid content of the solution is 60% to obtain stem paste and leaf paste;
e. solid material grinding
B, adding water into the solid tobacco stems obtained in the step b, thickening the mixture to 2.0% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 15 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c, thickening the mixture to a mass concentration of 4.0%, and grinding the mixture to obtain 12 ︒ SR tobacco leaf fragment pulp; adding water into the bamboo pulp board, adjusting the concentration of the bamboo pulp board to 3.0% of mass concentration, and grinding the bamboo pulp board into pulp to obtain 30 ︒ SR bamboo pulp;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the bamboo pulp and the burley tobacco leaf particles and burley tobacco stem particles obtained in the step a according to an absolute dry mass ratio of 60:35:5:5:10, adding water to prepare mixed pulp with the mass concentration of 2.0%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base sheet with the water content of 38%;
g. preparation of coating liquid and coating
D, mixing the stem extract and the leaf extract obtained in the step d in a ratio of 55: 45 mass percent of the base material is mixed uniformly to prepare a coating liquid, the coating liquid is coated on the reconstituted tobacco sheet base at a coating rate of 45 percent, and the reconstituted tobacco with the high nicotine type paper-making process, disclosed by the invention, of which the water content is 10.0 percent is obtained after squeezing and drying are carried out in sequence.
Comparative example 1:
a. extraction of tobacco stalk material
Extracting Yunnan tobacco stems by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water in a mass ratio of 1:6, performing countercurrent extraction at 80 ℃, and performing solid-liquid separation after extraction for 35min to respectively obtain solid tobacco stems and tobacco stem extracting solution;
b. tobacco fragment raw material extraction
Extracting Yunnan tobacco leaf fragment raw materials by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf raw material and water in a mass ratio of 1:8, carrying out countercurrent extraction at 60 ℃, carrying out solid-liquid separation after 35min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
c. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of vacuum degree of 40mbar and temperature of 80 ℃ until the solid content of the solution is 40% to obtain stem paste and leaf paste;
d. solid material grinding
B, adding water into the solid tobacco stems obtained in the step a, thickening the mixture to 3.0% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 40 ︒ SR; b, adding water into the tobacco fragment solid obtained in the step b, thickening the mixture to a mass concentration of 3.5%, and grinding the mixture to obtain 30 ︒ SR tobacco fragment pulp; adding water into the needle blade pulp board to adjust the consistency to 4.0 mass percent of the mixture, and grinding the mixture to obtain 47 ︒ SR needle blade pulp;
e. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the needle leaf pulp and the light calcium carbonate according to an oven-dry mass ratio of 48:37:5:10, adding water to prepare mixed pulp with the mass concentration of 3%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base with the water content of 30%;
f. preparation of coating liquid and coating
And c, uniformly mixing the stem paste and the leaf paste obtained in the step c according to the mass ratio of 40:60 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 40%, and squeezing and drying the coating liquid in sequence to obtain the reconstituted tobacco with the water content of 11.5%.
Example 4:
a. preparation of burley tobacco particle filler
Putting the dried burley tobacco fragments into a high-speed grinding mill for grinding, and obtaining burley tobacco fragment particles after passing through a 150-mesh sieve;
b. extraction of tobacco stalk material
Extracting Sichuan tobacco stems by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water according to a mass ratio of 1:7, performing countercurrent extraction at 90 ℃, and performing solid-liquid separation after extraction for 30min to obtain solid tobacco stems and tobacco stem extracting solution respectively;
c. tobacco fragment raw material extraction
Extracting the Sichuan tobacco leaf fragment raw material by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf raw material and water according to a mass ratio of 1:8, carrying out countercurrent extraction at 70 ℃, carrying out solid-liquid separation after 40min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of vacuum degree of 50mbar and 80 ℃ until the solid content of the solution is 45% to obtain stem paste and leaf paste;
e. solid material grinding
B, adding water into the solid tobacco stems obtained in the step b, thickening the mixture to 2.5% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 45 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c, thickening the mixture to a mass concentration of 3.0%, and grinding the mixture to obtain 40 ︒ SR tobacco leaf fragment pulp; adding water into the needle blade pulp board to adjust the consistency to 3.5 mass percent of the mixture, and grinding the mixture to obtain 50 ︒ SR needle blade pulp;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the needle leaf pulp and the burley tobacco fragment particles obtained in the step a according to the absolute dry mass ratio of 30:40:8:22, adding water to prepare mixed pulp with the mass concentration of 4%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base with the water content of 35%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 45:55 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 45%, and squeezing and drying the coating liquid in sequence to obtain the high-nicotine paper-making process reconstituted tobacco with the water content of 12.0%.
Example 5:
a. preparation of burley tobacco particle filler
Putting the dried burley tobacco powder into a high-speed grinding machine for grinding, and obtaining burley tobacco powder particles after passing through a 150-mesh sieve;
b. extraction of tobacco stalk material
Extracting the tobacco stems in Hebei river by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water according to a mass ratio of 1:7, performing countercurrent extraction at 90 ℃, and performing solid-liquid separation after extraction for 45min to obtain solid tobacco stems and tobacco stem extracting solution respectively;
c. tobacco fragment raw material extraction
Extracting the tobacco fragment raw materials in Hebei by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf raw material and water according to a mass ratio of 1:6, carrying out countercurrent extraction at 60 ℃, carrying out solid-liquid separation after 30min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of a vacuum degree of 50mbar and a temperature of 60 ℃ until the solid content of the solution is 60% to obtain stem paste and leaf paste;
e. solid material grinding
B, adding water into the solid tobacco stems obtained in the step b, thickening the mixture to 3.0% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 45 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c, thickening the mixture to a mass concentration of 3.5%, and grinding the mixture to obtain 12 ︒ SR tobacco leaf fragment pulp; adding water into the hemp pulp board, thickening the hemp pulp board to a mixture with the mass concentration of 4.0%, and grinding the mixture to obtain 16 ︒ SR hemp pulp;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the hemp pulp and the burley tobacco powder particles obtained in the step a according to the absolute dry mass ratio of 40:60:10:30, adding water to prepare mixed pulp with the mass concentration of 4.5%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base with the water content of 35%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 45:55 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 30%, and squeezing and drying the coating liquid in sequence to obtain the high-nicotine paper-making process reconstituted tobacco with the water content of 9.5%.
Example 6:
a. preparation of burley tobacco particle filler
Respectively putting the dried burley tobacco fragments and the burley tobacco powder into a high-speed pulverizer for pulverizing, and passing through a 150-mesh sieve to obtain burley tobacco fragment particles and burley tobacco powder particles;
b. extraction of tobacco stalk material
Extracting Yunnan tobacco stems by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water according to a mass ratio of 1:5, performing countercurrent extraction at 80 ℃, and performing solid-liquid separation after extraction for 30min to obtain solid tobacco stems and tobacco stem extracting solution respectively;
c. tobacco fragment raw material extraction
Extracting Yunnan tobacco leaf fragment raw materials by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf raw material and water according to a mass ratio of 1:8, carrying out countercurrent extraction at 80 ℃, carrying out solid-liquid separation after 30min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of vacuum degree of 30mbar and 70 ℃ until the solid content of the solution is 45% to obtain stem paste and leaf paste;
e. solid material grinding
B, adding water into the solid tobacco stems obtained in the step b, thickening the mixture to 2.5% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 50 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c, thickening the mixture to a mass concentration of 2.5%, and grinding the mixture to obtain 50 ︒ SR tobacco leaf fragment pulp; adding water into the needle blade pulp board to adjust the consistency to 4.0 mass percent of the mixture, and grinding the mixture to obtain 16 ︒ SR needle blade pulp;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the needle leaf pulp, the burley tobacco fragment particles obtained in the step a and the burley tobacco powder particles according to the absolute dry mass ratio of 50:30:8:6:6, adding water to prepare mixed pulp with the mass concentration of 3%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base sheet with the water content of 35%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 50:50 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 40%, and squeezing and drying the coating liquid in sequence to obtain the high-nicotine paper-making process reconstituted tobacco with the water content of 12.0%.
Comparative example 2:
a. extraction of tobacco stalk material
Extracting Sichuan tobacco stems by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing tobacco stems and water according to a mass ratio of 1:7, performing countercurrent extraction at 90 ℃, and performing solid-liquid separation after extraction for 30min to obtain solid tobacco stems and tobacco stem extracting solution respectively;
b. tobacco fragment raw material extraction
Extracting the Sichuan tobacco leaf fragment raw material by adopting a three-stage countercurrent extraction mode, wherein the extraction conditions of each stage are as follows: mixing the tobacco leaf raw material and water according to a mass ratio of 1:8, carrying out countercurrent extraction at 70 ℃, carrying out solid-liquid separation after 40min of extraction to respectively obtain a tobacco leaf fragment solid matter and a tobacco leaf fragment extracting solution;
c. concentrating the extractive solution
Respectively concentrating the tobacco stem extract and the tobacco leaf fragment extract under the conditions of vacuum degree of 50mbar and 80 ℃ until the solid content of the solution is 45% to obtain stem paste and leaf paste;
d. solid material grinding
B, adding water into the solid tobacco stems obtained in the step a, thickening the mixture to 2.0% of mass concentration, and grinding the mixture to obtain tobacco stem pulp of 45 ︒ SR; b, adding water into the tobacco leaf fragment solid obtained in the step b, thickening the mixture to a mass concentration of 3.5%, and grinding the mixture to obtain 40 ︒ SR tobacco leaf fragment pulp; adding water into the needle blade pulp board to adjust the consistency to 3.0 mass percent of the mixture, and grinding the mixture to obtain 50 ︒ SR needle blade pulp;
e. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the needle leaf pulp and the heavy calcium carbonate particles according to an oven-dry mass ratio of 40:40:8:12, adding water to prepare mixed pulp with the mass concentration of 3%, and then sequentially forming, squeezing and drying on a paper machine to obtain a reconstituted tobacco leaf base with the water content of 35%;
f. preparation of coating liquid and coating
And c, uniformly mixing the stem paste and the leaf paste obtained in the step c according to the mass ratio of 45:55 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base at a coating rate of 45%, and squeezing and drying the coating liquid in sequence to obtain the high-nicotine reconstituted tobacco with the water content of 12.0%.
The reconstituted tobaccos obtained in examples 1 to 6, comparative example 1 and comparative example 2 were sampled and subjected to nicotine detection by the standard method of "continuous flow (potassium thiocyanate) method for determination of total plant alkaloids of tobaccos and tobacco products" (YC/T468-.
TABLE 1 Nicotine assay results of reconstituted tobacco
| Sample numbering | Description of the samples | Type of packing | Amount of Filler (%) | Nicotine (%) |
| 1 | Example 1 | 100-mesh burley tobacco leaf particle | 10 | 1.67 |
| 2 | Example 2 | 150-mesh burley tobacco stem particles | 10 | 1.39 |
| 3 | Example 3 | 100-mesh burley tobacco leaf and tobacco stem particles | 10 | 1.52 |
| 4 | Comparative example 1 | Light calcium carbonate | 10 | 1.02 |
| 5 | Example 4 | 150 mesh burley tobacco fragment particles | 12 | 1.47 |
| 6 | Example 5 | 150-mesh burley tobacco powder particle | 12 | 1.26 |
| 7 | Example 6 | 150 mesh burley tobacco fragments and dust particles | 12 | 1.32 |
| 8 | Comparative example 2 | Ground calcium carbonate | 12 | 1.13 |
As can be seen from Table 1, the nicotine content of the reconstituted tobacco of the invention is significantly higher than that of the conventional reconstituted tobacco, compared to the conventional reconstituted tobacco.
The reconstituted tobaccos obtained in examples 1 to 6, comparative example 1 and comparative example 2 were manually prepared into cigarettes, and sensory evaluation was performed by an evaluation group consisting of professional smoke evaluators in the industry, and specific evaluation results are shown in table 2.
TABLE 2 sensory comparison and evaluation of reconstituted tobacco
| Cigarette sample | Sensory evaluation |
| Example 1 | Moderate fragrance concentration, strong head and slight irritation to nasal cavity |
| Example 2 | Moderate fragrance concentration, moderate strength and slight irritation to nasal cavity |
| Example 3 | Moderate fragrance concentration, strong head and slight irritation to nasal cavity |
| Comparative example 1 | General fragrance amount, insufficient strength and obvious irritation |
| Example 4 | Has high fragrance concentration, high strength, and low irritation |
| Example 5 | Moderate fragrance concentration, moderate strength and slight irritation to nasal cavity |
| Example 6 | Has good fragrance concentration, strong fragrance and small irritation |
| Comparative example 2 | General fragrance amount, insufficient strength and obvious irritation |
As can be seen from Table 2, compared with the reconstituted tobacco under the same conditions, the reconstituted tobacco using burley tobacco as filler has the advantages of sufficient strength, moderate aroma concentration, reduced wood gas, slightly reduced irritation, improved aftertaste and obviously improved sensory quality.
In conclusion, the burley tobacco granules are used as the filler, so that the defect of low nicotine content in the reconstituted tobacco finished product in the prior art is effectively overcome.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. The preparation method of the high-nicotine paper-making process reconstituted tobacco with burley tobacco particles as fillers is characterized by comprising the following steps of:
a. burley tobacco particle preparation
Crushing the dried burley tobacco raw material into 100-150-mesh burley tobacco particles;
b. extraction of tobacco stalk material
Mixing tobacco stems with water according to a mass ratio of 1: 5-8, then carrying out countercurrent extraction at 80-90 ℃, carrying out solid-liquid separation after extraction for 30-45 min to obtain solid tobacco stems and tobacco stem extracting solution;
c. tobacco fragment raw material extraction
Mixing the tobacco leaf fragment raw materials with water according to the mass ratio of 1: 6-10, carrying out countercurrent extraction at the temperature of 60-80 ℃, carrying out solid-liquid separation after extraction for 30-45 min to obtain tobacco leaf fragment solid matters and tobacco leaf fragment extracting solution;
d. concentrating the extractive solution
Respectively concentrating the tobacco stem extracting solution and the tobacco leaf fragment extracting solution under the conditions of vacuum degree of 30-60 mbar and temperature of 60-80 ℃ until the solid content of the solution is 35-60%, so as to obtain stem paste and leaf paste;
e. solid material grinding
C, adding water into the solid tobacco stems obtained in the step b, blending into a mixture with the concentration of 1.0-4.0%, and grinding into slurry to obtain tobacco stem slurry with the concentration of 12-50 ︒ SR; c, adding water into the tobacco leaf fragment solid obtained in the step c to prepare a mixture with the concentration of 1.0-4.0%, and grinding the mixture to obtain 12-50 ︒ SR tobacco leaf fragment pulp; adding water into the external fiber to prepare a mixture with the concentration of 1.0-4.0%, and grinding the mixture to obtain external fiber pulp of 16-47 ︒ SR;
f. slurry blending and sheet-based papermaking
Uniformly mixing the tobacco stem pulp, the tobacco leaf fragment pulp, the outer fiber pulp and the burley tobacco particles obtained in the step a according to a mass ratio of 30-60: 5-10: 10-30, adding water to prepare a mixed pulp of 2.0-4.5%, and then sequentially forming, squeezing and drying to obtain a reconstituted tobacco leaf base sheet with the water content of 12-38%;
g. preparation of coating liquid and coating
And d, uniformly mixing the stem paste and the leaf paste obtained in the step d according to the mass ratio of 40-70: 30-60 to prepare a coating liquid, coating the coating liquid on the reconstituted tobacco sheet base obtained in the step f according to the coating rate of 30-45%, and squeezing and drying the base and the base in sequence to obtain the high nicotine type reconstituted tobacco with the water content of 9.5-12.5%.
2. The method for preparing the reconstituted tobacco leaves by the high nicotine type paper-making process with the burley tobacco particles as the filler according to claim 1, wherein the burley tobacco raw materials are any one or a mixture of more than one of burley tobacco leaves, burley tobacco stems, burley tobacco fragments or burley tobacco powder in any proportion.
3. The method for preparing reconstituted tobacco leaves by a high-nicotine paper-making process with burley tobacco particles as fillers according to claim 1, wherein the additional fibers are needle pulp, broad leaf pulp, bamboo pulp or hemp pulp.
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