CN115444162A - Method for producing tobacco extract by utilizing waste flue-cured tobacco leaves - Google Patents
Method for producing tobacco extract by utilizing waste flue-cured tobacco leaves Download PDFInfo
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- CN115444162A CN115444162A CN202211152576.0A CN202211152576A CN115444162A CN 115444162 A CN115444162 A CN 115444162A CN 202211152576 A CN202211152576 A CN 202211152576A CN 115444162 A CN115444162 A CN 115444162A
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 114
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 114
- 239000000284 extract Substances 0.000 title claims abstract description 47
- 239000002699 waste material Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 35
- 238000002791 soaking Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000011259 mixed solution Substances 0.000 claims description 26
- 239000000243 solution Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 239000000706 filtrate Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- 238000001728 nano-filtration Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 abstract description 13
- 206010013911 Dysgeusia Diseases 0.000 abstract description 3
- 230000007794 irritation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 235000013599 spices Nutrition 0.000 abstract 1
- 239000003205 fragrance Substances 0.000 description 6
- 238000000199 molecular distillation Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000007670 refining Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 239000000796 flavoring agent Substances 0.000 description 4
- 235000019634 flavors Nutrition 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 230000004151 fermentation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 229960002715 nicotine Drugs 0.000 description 2
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229940055329 tobacco leaf extract Drugs 0.000 description 2
- 238000002137 ultrasound extraction Methods 0.000 description 2
- YHBIGBYIUMCLJS-UHFFFAOYSA-N 5-fluoro-1,3-benzothiazol-2-amine Chemical compound FC1=CC=C2SC(N)=NC2=C1 YHBIGBYIUMCLJS-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 244000047670 Viola x wittrockiana Species 0.000 description 1
- 235000004031 Viola x wittrockiana Nutrition 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- KJNFMGMNZKFGIE-UHFFFAOYSA-N n-(4-hydroxyphenyl)acetamide;5-(2-methylpropyl)-5-prop-2-enyl-1,3-diazinane-2,4,6-trione;1,3,7-trimethylpurine-2,6-dione Chemical compound CC(=O)NC1=CC=C(O)C=C1.CN1C(=O)N(C)C(=O)C2=C1N=CN2C.CC(C)CC1(CC=C)C(=O)NC(=O)NC1=O KJNFMGMNZKFGIE-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229940116190 repan Drugs 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000194 supercritical-fluid extraction Methods 0.000 description 1
- 235000019505 tobacco product Nutrition 0.000 description 1
Classifications
-
- 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
- A24B15/26—Use of organic solvents for extraction
-
- 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
-
- 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
-
- 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
- A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
-
- 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
Abstract
The invention discloses a method for producing tobacco extract by utilizing waste flue-cured tobacco leaves, which is to refine the waste flue-cured tobacco leaves by combining cold soaking, heating extraction and filter membranes to obtain two tobacco extract spices. The method effectively improves the aroma amount and aroma quality of the cigarettes, greatly reduces the irritation of the cigarettes, has pure aroma, excellent aftertaste and moderate strength, is beneficial to industrial application of the waste tobacco leaves, and improves the additional value of the waste tobacco leaves.
Description
Technical Field
The invention belongs to the technical field of preparation of tobacco flavors and fragrances, and particularly relates to a tobacco extract and a preparation method thereof.
Background
The tobacco extract is an important fragrant raw material of the cigarette, contains tobacco intrinsic fragrance components, has the advantages of natural and harmonious fragrance, compensation of the intrinsic fragrance of the tobacco leaves, prominent style characteristics and the like, can improve the main fragrance of the tobacco leaves, and endows the cigarette with more natural and full fragrance. The low-grade flue-cured tobacco leaves are a large number of byproducts generated in the production of cigarettes, and the material compositions of the byproducts are almost completely the same as those of the dry tobacco leaves. Therefore, the low-grade flue-cured tobacco leaves are reasonably developed and utilized, and great economic benefit and good social and environmental benefit can be generated. Extracting nicotine from waste tobacco leaves to produce nicotine pesticide (Hu Ling, yueyun, guan Ping, etc., research on a new method for producing nicotine sulfate from waste and inferior tobacco leaves, chemical research and application [ J ].2000, (02): 224-226.); xuchunping et al treated inferior tobacco leaves with fermentation technology to prepare a characteristic tobacco extract (xuchunping, ramsdan, king charge, etc. research on improving the quality of tobacco sheet concentrate by fermentation of aroma-producing yeast [ J ] essence-spice cosmetics, 2019, (01): 10-16.); the characteristic cigarette flavor is prepared by performing Maillard reaction on extract of waste upper fresh tobacco leaves generated by topping in Schoenling et al (Schoenling, repan, yong, et al. The characteristic cigarette flavor is prepared by the Maillard reaction of the waste upper fresh tobacco leaves [ J ]. Guangdong agricultural science, 2017,44 (9): 100-105.).
The tobacco extract product has complex components, and the problems of low content of aroma components, heavy offensive odor, poor cigarette flavoring and smoking effect and the like are caused while the natural feeling and richness are endowed to the tobacco extract.
At present, in the aspect of extract preparation, the traditional process mainly adopts methods such as steam distillation, solvent extraction, squeezing, crystallization and the like to extract tobacco extract. In recent years, some new extraction technical means such as molecular distillation, supercritical fluid extraction, ultrasonic extraction, ultrahigh pressure extraction, enzyme method, microbial fermentation method and the like are also developed; in the aspect of refining and grading the extract, various separation technologies are currently applied to the refining and grading of the tobacco extract, such as column chromatography, membrane separation, precipitation separation, molecular distillation and the like. Patent CN111175420A discloses a method for separating and analyzing aroma components in tobacco leaves, which comprises extracting the tobacco leaves with water, an organic solvent or a mixed solvent of the two to obtain a tobacco leaf extract, concentrating the tobacco leaf extract to obtain a tobacco extract, separating the tobacco extract by chromatography, grouping according to aroma characteristics of each fraction, and concentrating respectively to obtain a grouped concentrate. Patent CN113633017A discloses a tobacco extract, its preparation method and application, and a tobacco product, which are sequentially implemented by pulverizing tobacco leaves, performing subcritical extraction, removing an extracting agent (butane or dimethyl ether is used as the extracting agent), obtaining a tobacco extract, performing alcohol precipitation and solid-liquid separation on the obtained tobacco extract, concentrating the obtained clear liquid, obtaining a tobacco concentrate, performing primary molecular distillation on the obtained tobacco concentrate, performing secondary molecular distillation on a heavy component obtained by the primary molecular distillation, and obtaining a light component, namely the tobacco extract. Patent CN101570717A discloses a preparation method and application of a tobacco extract, which comprises the steps of enzymolysis, ultrasonic extraction, filtration, chromatographic column separation, reduced pressure concentration and the like, to obtain the tobacco extract. Patent CN109527641B discloses a tobacco extract and a preparation method thereof, which comprises the steps of compounding tobacco and pansy in a propylene glycol aqueous solution, and carrying out high-pressure extraction and molecular distillation combined, and concentrating the distillate under reduced pressure to obtain the tobacco extract. Patent CN104223356A discloses a method for adsorbing protein macromolecules in tobacco extract by using a zwitter-ion exchange membrane to improve the quality of the tobacco extract.
Aiming at the problems that macromolecular substances in the extract are difficult to remove by the extraction method and the refining means widely adopted by the existing tobacco extract, the extract still has the problems of heavy miscellaneous gas, large stimulation, poor aftertaste and the like, and the processes of column chromatography, alkali extraction, acid precipitation and the like are complex, the conditions are difficult to control, and the large-scale production is difficult. The method for producing the tobacco extract by utilizing the waste flue-cured tobacco leaves is developed, and the tobacco extract obtained by refining has better flavoring effect. In addition, the waste is utilized reasonably, the waste is utilized, the waste is changed into valuable, and the additional value of the industry is increased.
Disclosure of Invention
The invention provides a method for producing tobacco extract by utilizing waste flue-cured tobacco leaves, aiming at further concentrating the aroma components in the tobacco by a simple process and reasonably utilizing the waste tobacco leaves.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for producing tobacco extract by using waste flue-cured tobacco leaves comprises the following steps:
1) Carrying out fragmentation treatment on the waste primary flue-cured tobacco leaves to obtain crushed tobacco leaves;
2) Transferring the crushed tobacco leaves into a closed container, adding a mixed solution of ethanol and water into the container, soaking and extracting for two times at normal temperature, continuously opening reflux in the soaking process to enable liquid in the container to keep a flowing state, and performing solid-liquid separation after soaking; mixing the two extractive solutions to obtain extractive solution A and residue;
3) Adding the mixed solution of ethanol and water into the filter residue obtained in the step 2), heating, soaking and extracting for two times, intermittently starting reflux in the soaking process, and filtering through a microporous filter membrane after soaking; mixing the two extractive solutions, and filtering with nanofiltration membrane to obtain filtrate B;
4) And respectively concentrating the extracting solution A and the filtrate B under reduced pressure to obtain two tobacco extracts.
Further, in the step 2), the mass percentage of the ethanol in the mixed liquid of the ethanol and the water is 60-95%, the adding amount of the mixed liquid of the ethanol and the water is 5-9 times of the mass of the crushed tobacco leaves in each extraction, and the extraction time is 70-100min each time.
Further, in the step 3), the mass percentage of the ethanol in the mixed solution of the ethanol and the water is 75%, the adding amount of the mixed solution of the ethanol and the water is 5-9 times of the mass of the crushed tobacco leaves in each extraction, the temperature of each extraction is 70-90 ℃, and the time of each extraction is 70-100min.
Further, in the step 3), the filtering aperture of the microporous filtering membrane is not more than 10 μm, and the filtering aperture of the nanofiltration membrane is not more than 500nm.
Compared with the prior art, the invention has the beneficial effects that:
1. the method carries out cold soaking and hot extraction on the waste flue-cured tobacco leaves in sequence, and obtains two tobacco extracts with different flavoring effects through reduced pressure concentration, so that the aroma amount and aroma quality of the cigarettes are effectively improved, the irritation of the cigarettes is greatly reduced, the tobacco aroma is pure, the aftertaste is excellent, the strength is moderate, the industrial application of the waste tobacco leaves is facilitated, the added value of the waste tobacco leaves is improved, and higher economic value is generated.
2. The method has simple process, is suitable for large-scale production, and reduces pollution.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible. The following disclosure is merely exemplary and illustrative of the inventive concept, and those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Example 1
In this example, tobacco extract was produced as follows:
1) And (4) fragmenting the waste flue-cured tobacco leaves to obtain the crushed tobacco leaves.
2) Transferring the crushed tobacco leaves into a closed tank, adding a mixed solution of ethanol and water (the mass percent of the ethanol is 75%) into the tank, soaking and extracting at normal temperature twice (the adding amount of the mixed solution of the ethanol and the water is 7 times of the mass of the crushed tobacco leaves during the first extraction and 5 times of the second extraction), wherein the extraction time is 90min each time, continuously starting reflux in the soaking process to keep the liquid in the container in a flowing state, and performing solid-liquid separation after soaking; mixing the two extractive solutions to obtain extractive solution A and residue.
3) Adding a mixed solution of ethanol and water into the filter residue obtained in the step 2) again (the mass percent of the ethanol is 75%), heating and soaking at 80 ℃ for two times (the adding amount of the mixed solution of the ethanol and the water is 7 times of the mass of the broken tobacco leaves in the first extraction, the adding amount of the mixed solution of the ethanol and the water is 5 times of the mass of the broken tobacco leaves in the second extraction), extracting for 90min each time, intermittently starting reflux in the soaking process, and filtering through a microporous membrane with the diameter of 10 mu m after soaking; combining the two extracting solutions, and filtering by a 50nm nanofiltration membrane to obtain filtrate B.
4) And respectively carrying out reduced pressure concentration and paste collection on the extracting solution A and the filtrate B to obtain two tobacco extracts.
Example 2
In this example, tobacco extract was produced as follows:
1) And (4) fragmenting the waste flue-cured tobacco leaves to obtain the crushed tobacco leaves.
2) Transferring the crushed tobacco leaves into a closed tank, adding a mixed solution of ethanol and water (the mass percent of the ethanol is 75%) into the tank, soaking and extracting at normal temperature twice (the adding amount of the mixed solution of the ethanol and the water is 7 times of the mass of the crushed tobacco leaves during the first extraction and 5 times of the second extraction), wherein the extraction time is 90min each time, continuously starting reflux in the soaking process to keep the liquid in the container in a flowing state, and performing solid-liquid separation after soaking; the two extracting solutions are respectively an extracting solution A1 and an extracting solution A2.
3) Adding a mixed solution of ethanol and water into the filter residue obtained in the step 2) again (the mass percent of the ethanol is 75%), heating and soaking at 80 ℃ for two times (the adding amount of the mixed solution of the ethanol and the water is 7 times of the mass of the broken tobacco leaves in the first extraction, the adding amount of the mixed solution of the ethanol and the water is 5 times of the mass of the broken tobacco leaves in the second extraction), extracting for 90min each time, intermittently starting reflux in the soaking process, and filtering through a microporous membrane with the diameter of 10 mu m after soaking; combining the two extracting solutions, and filtering by a 50nm nanofiltration membrane to obtain filtrate B.
4) Respectively carrying out reduced pressure concentration and paste collection on the extracting solution A1, the extracting solution A2 and the filtrate B to obtain three tobacco extracts.
Example 3
In this example, tobacco extract was produced as follows:
1) And (4) fragmenting the waste flue-cured tobacco leaves to obtain the crushed tobacco leaves.
2) Transferring the crushed tobacco leaves into a closed tank, adding a mixed solution of ethanol and water (the mass percent of the ethanol is 95%) into the tank, soaking and extracting the crushed tobacco leaves twice at normal temperature (the adding amount of the mixed solution of the ethanol and the water is 7 times of the mass of the crushed tobacco leaves during the first extraction, the adding amount of the mixed solution of the ethanol and the water is 5 times of the mass of the crushed tobacco leaves during the second extraction), wherein the extraction time is 90min each time, continuously starting reflux in the soaking process to keep the liquid in the container in a flowing state, and performing solid-liquid separation after soaking; mixing the two extractive solutions to obtain extractive solution A and residue.
3) Adding a mixed solution of ethanol and water into the filter residue obtained in the step 2) again (the mass percent of the ethanol is 75%), heating and soaking at 80 ℃ for two times (the adding amount of the mixed solution of the ethanol and the water is 7 times of the mass of the crushed tobacco leaves in the first extraction, the adding amount of the mixed solution of the ethanol and the water is 5 times of the mass of the crushed tobacco leaves in the second extraction), wherein the extraction time is 90min each time, intermittently starting reflux in the soaking process, and filtering through a microporous filter membrane with the diameter of 10 mu m after soaking; combining the two extracting solutions, and filtering by a 50nm nanofiltration membrane to obtain filtrate B.
4) And respectively carrying out reduced pressure concentration and paste collection on the extracting solution A and the filtrate B to obtain two tobacco extracts.
The tobacco extracts obtained in the above examples 1 to 3 were added to the blank test cigarettes of the Huangshan series of cigarettes, and the blank test cigarettes of the Huangshan series were taken as a control group to evaluate smoking, and the results are shown in Table 1.
TABLE 1 sensory evaluation of tobacco extracts
As shown in Table 1, the two types of tobacco flavors are obtained by respectively carrying out cold soaking and heating extraction on the waste flue-cured tobacco leaves and refining the waste flue-cured tobacco leaves by combining with a filter membrane, so that the aroma quality of the flue-cured tobacco is effectively improved, the irritation of the flue-cured tobacco is greatly reduced, and the tobacco aroma is normal, mixed and enhanced.
The foregoing is merely an exemplary embodiment of the present invention, and it should be noted that various modifications and improvements can be made by those skilled in the art without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (5)
1. A method for producing tobacco extract by using waste flue-cured tobacco leaves is characterized by comprising the following steps:
1) Fragmenting the waste primary flue-cured tobacco leaves to obtain crushed tobacco leaves;
2) Transferring the crushed tobacco leaves into a closed container, adding a mixed solution of ethanol and water into the container, soaking and extracting for two times at normal temperature, continuously opening reflux in the soaking process to enable liquid in the container to keep a flowing state, and performing solid-liquid separation after soaking; mixing the two extractive solutions to obtain extractive solution A and residue;
3) Adding the mixed solution of ethanol and water into the filter residue obtained in the step 2), heating, soaking and extracting for two times, intermittently starting reflux in the soaking process, and filtering through a microporous filter membrane after soaking; mixing the two extractive solutions, and filtering with nanofiltration membrane to obtain filtrate B;
4) And respectively concentrating the extracting solution A and the filtrate B under reduced pressure to obtain two tobacco extracts.
2. The method for producing tobacco extract from waste flue-cured tobacco leaves according to claim 1, wherein: in the step 2), the mass percent of the ethanol in the mixed solution of the ethanol and the water is 60-95%, the adding amount of the mixed solution of the ethanol and the water is 5-9 times of the mass of the crushed tobacco leaves in each extraction, and the extraction time is 70-100min.
3. The method of claim 1, wherein the method comprises the steps of: in the step 3), the mass percent of the ethanol in the mixed solution of the ethanol and the water is 75%, the adding amount of the mixed solution of the ethanol and the water is 5-9 times of the mass of the crushed tobacco leaves during each extraction, the temperature of each extraction is 70-90 ℃, and the time of each extraction is 70-100min.
4. The method of claim 1, wherein the method comprises the steps of: in the step 3), the filtering aperture of the microporous filtering membrane is not more than 10 μm, and the filtering aperture of the nanofiltration membrane is not more than 500nm.
5. A tobacco extract made by the method of any one of claims 1 to 4.
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| CN104738809A (en) * | 2015-02-11 | 2015-07-01 | 云南香颂科技有限公司 | Preparation method for tobacco extract and application of tobacco extract in cigarettes |
| CN105852189A (en) * | 2016-05-31 | 2016-08-17 | 湖北中烟工业有限责任公司 | Method for preparing tobacco extract by utilizing waste and inferior tobacco leaves |
| CN109527641A (en) * | 2017-09-22 | 2019-03-29 | 江西中烟工业有限责任公司 | A kind of tobacco extract and preparation method thereof |
-
2022
- 2022-09-21 CN CN202211152576.0A patent/CN115444162B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102178346A (en) * | 2011-05-30 | 2011-09-14 | 昌宁德康生物科技有限公司深圳分公司 | Production method for extracting absolute oil of tobacco leaves |
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