CN101991182B - Method for producing nontoxic and harmless tobacco leaves from low-grade tea leaves, tea dust and other tea raw materials by paper making method - Google Patents
Method for producing nontoxic and harmless tobacco leaves from low-grade tea leaves, tea dust and other tea raw materials by paper making method Download PDFInfo
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- CN101991182B CN101991182B CN200910169204.7A CN200910169204A CN101991182B CN 101991182 B CN101991182 B CN 101991182B CN 200910169204 A CN200910169204 A CN 200910169204A CN 101991182 B CN101991182 B CN 101991182B
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Abstract
The invention discloses a method for producing nontoxic and harmless tobacco leaves from low-grade tea leaves, tea dust and other tea raw materials by a paper making method. The method comprises the following steps of: selecting and chopping the raw materials; adding an extracting agent and then puffing and extracting for 12 hours at the temperature of between 20 and 50 DEG C; separating solid from liquid; grinding and pulping tea seed cakes; storing slurry; slushing the slurry to 1 percent; sending the slurry into a paper machine for papermaking so as to prepare a paper base of the tobacco leaves; concentrating extracting solution (separated caffeine and tea polyphenol) into tea extract; adding spices into the tea extract in proportion; and performing dip-coating, drying, secondary dip-coating, drying and shredding on the paper base in concentrated solution to prepare finished tobacco leaves.
Description
The invention belongs to the technical field that tealeaves comprehensive utilization and paper process are produced reconstituted tobacco, be specifically related to a kind of method of utilizing the tea raw material paper process such as inferior grade tealeaves, tea dust to produce nontoxic tobacco leaf.
Background technology and technical background.
Tobacco sheets by paper making method is to utilize raw material of cigarette---tobacco leaf is the raw tobacco material such as discarded offal, offal in redrying, stockyard, production process, through extraction, DDGS concentrates modulates back painting, the upper paper machine of the insoluble matter making beating paper substrate of manufacturing paper with pulp, the dry several steps of perfuming, make proterties and approach the thin slice that is even better than natural tobacco leaf, be back to production of cigarettes, thereby the whole raw materials of tobacco leaf are utilized.
In tobacco leaf, comprise 4000 multiple harmful substances, topmost have: tar, nicotine (nicotine), carbon monoxide etc.
Tar, the particle matter of the tobacco oil lipid producing by burning while being a kind of smoking.Tar is determining the feature taste of cigarette, has a suck of cigarette and is sprayed on that on blank sheet of paper, can to present dark brown material be tar.According to medical research analysis, tar is the part of tool destructive power in habitual smoking, along with the formation of smoking habit, accumulates over a long period, and accumulates in smoker's the internal organ such as lung, to human body, cause damage, and be mutagens and the carcinogenic medium of the many causes of disease of health.
Nicotine (nicotine), is noxious material in tobacco, is a kind of oiliness compound of colorless and odorless, is the alkaloid naturally existing in tobacco plant, high concentration in leaf, a kind of drugs that are enough to causing death.Smoker often has a suck of cigarette, and the nicotine in flue gas is rapidly absorbed by lung, and moment is passed to mesencephalic centre, makes its excitement, becomes one of principal element of smoking pleasant sensation and smoking addiction; Nicotine is medically being considered to almost to belong to an aspect together with opium, and nicotine can produce withrawal symptom, so once smoker starts smoking, will make him relapse once every 30～40 minutes nicotines.In addition, nicotine has the drug effect that stimulates nervous centralis, and just as amphetamine, although be all minimal irritation, nicotine is different from the effect of stimulation of amphetamine.For example: after suction, nicotine makes static heart rate increase by 15～20 beats/min, and blood pressure is increased, and erythrocyte is concentrated, so need frequent pump blood.Therefore, nicotine brings serious pressure to cardiovascular system.
Carbon monoxide is a kind of pernicious gas of colorless and odorless.Carbon monoxide reduce in blood containing oxygen composition, impel smoker's hypoxemia and accelerate aging rate.When people's smoking is excessive or stay in smoke-logged space for a long time, there will be the anoxic symptoms such as headache, dizzy and expiratory dyspnea, Here it is blood oxygen that carbon monoxide causes is under-supply to be caused.
A large amount of medical researches prove, harmfulness of smoking health.Along with improving constantly of living standards of the people, health of people consciousness will be more and more stronger, the major subjects that " smoking is with healthy " become tobacco business to face.Therefore, we search out the pharmacological action of using tealeaves through years of researches, produce non-tobacco raw-material, adjustable nontoxic tobacco leaf.With tobacco compatibility, the person that makes cigarette consumption does not change it and inhales taste, enjoys cigarette when bringing their enjoyment, falls the health that Jiao, harm reduction, minimizing tobacco brings people and damages.
The contained Main Ingredients and Appearance of tealeaves is a kind of free radical scavenger, and it comprises: anti-oxidant, anti-cancer, reduce cholesterol, hypotensive, antibacterial, neuroprotective is first, deodorization, disease-resistant change, anti-diabetes, the immunity etc. that strengthens.
When reconstituted from tea tobacco leaf as suction product when burning and sucking, the temperature increase of different gradients when the multiple property of medicine material containing in tealeaves stands to burn and suck, its active ingredient can be distilled, gasifies, waving and distillation, form particulate phase and gas phase, and then act on respiratory system, follow the flue gas particle of different-grain diameter or be deposited in respiratory tract, or being absorbed and enter blood circulation by alveolar, be absorbed by the body, play drug-treating action.
The present invention is the method for utilizing the tea raw material paper process such as inferior grade tealeaves, tea dust to produce nontoxic tobacco leaf, and concrete technology step is:
Paper process is produced the tea raw material of nontoxic tobacco leaf, should strictly control material quality from three norms aspects such as sense organ, physics and chemistry, health.Sense index: color, smell and taste are normal, without going mouldy, particle >=40 order; Physical and chemical index: polyphenol content >=18%, catechin total amount >=10%, EGCG >=6%, moisture content≤8%; Sanitary index: residues of pesticides (mg/kg)≤10, heavy metal (mg/kg)≤20; In the middle of have that index is not up to standard all can not be as raw materials for production.Choose raw material, chopping, to 5～20mm, adds normal-temperature distilled water soaking moistening, controls the water content of raw material in 15～25% (weight ratios), it is easy to expanded, and raw material is packed in autoclave, utilizes supercritical CO
2(critical pressure 7.3MPa, 31 ℃ of critical-temperatures) fluid selective extraction function, under different operating conditions, tealeaves is separated into tealeaves essential oil (being dissolved in tealeaves tincture), caffeine, Tea Polyphenols and be rich in bioactivator (tealeaves lipopolysaccharides, vitamin) the tea dregs of rice, in the liquid ratio ratio of 5: 1, add distilled water constant temperature at 50～80 ℃ to stir 60 minutes again, dehydration is separated, tea dregs of rice moisture control 70～80%, then carry out defibrination, grinding clearance is 0.2～0.5mm, after can adding 10～20% glycyrrhiza residue wood oar, pull an oar, beating consistency is controlled at 8～11%, beating degree is 30～40 ° of SR.Slurry is sent into slurry storage tank, storage slurry concentration is 3% left and right, send into again and rush stock tank, punching slurry concentration is controlled at 0.5～2%, then enter paper machine (adopting tunnel-type hot air drying process) copy paper and make tobacco leaf paper substrate, extract is 80～90% tea juices, 10～20% succus liquiritiaes, at 60～80 ℃, concentrated concentration to 25～35% under the negative pressure of vacuum 0.04～0.06MPa, in concentrate, adding tobacco aromatics using is: fixastive, fumet and humectant, by tobacco leaf paper substrate, in 70～90 ℃ of temperature, dip-coating enters concentrate.Through microwave drying process balance, dry, be torn into the comparatively rhombus blade of rule, meet the chopping requirement of producing cigarette.Weight per unit area 120～the 140g/m of reconstituted tobacco
2; Thickness 0.35～0.40mm; Density 0.26～0.30%/m
2, elasticity 1.5～2.0%, rub and control coefficient 0.7～0.8 in surface, tensile strength 1.5～200 milli newton, water content 11～13%.
For the tea dregs of rice, glycyrrhiza residue paper making raw material, defibrination operation defibrination at twice, be once glycyrrhiza residue defibrination, gap is 0.5mm, secondary be the tea dregs of rice, glycyrrhiza residue slightly starch mix defibrination, gap is 0.2mm.
Raw material shreds to 5～20mm, adds normal-temperature distilled water soaking moistening, controls the water content of raw material in 15～25% (weight ratios), it is easy to expanded, and raw material is packed in autoclave, utilizes supercritical CO
2(critical pressure 7.3MPa, 31 ℃ of critical-temperatures) fluid selective extraction function extracts, and is conducive to softening, discongesting of paper-making fibre.
Paper substrate is dried and is adopted tunnel-type hot air drying process, tobacco leaf (finished product) to adopt microwave balance drying process.
Concentrate adopts the extract of tea raw material, add 10%～20% licorice raw material extract, after mixing, adopt low pressure concentrated, temperature when concentrated is controlled at 60～80 ℃, temperature during dip-coating is controlled at 70～90 ℃, and its object is to guarantee that the effective flavor matter of tealeaves, Radix Glycyrrhizae in concentrate is better appeared.
The present invention's technique is used non-tobacco raw-material to manufacture tobacco leaf, there is no the toxic composition in tobacco.Not only technological process is simple, and its physical property is all better than natural tobacco leaf, gas permeability and antioxygenic property are good, with natural baccy compatibility, can neutralize or reduce its oxious component, contribute to improve interior quality and the structure of cigarette products, improve the market competitiveness of tobacco, be a kind of tobacco material of both having saved, reduced tar content, reduces harmful substance and to health, brings the outstanding production Technology of injury again., also can establish one's own system meanwhile, satisfy the demands of consumers, exploitation suction product new varieties, thus improve the economic and social benefits.
The specific embodiment:
Embodiment mono-:
Take the tea dregs of rice as primary raw material, in 5: 1 ratios of liquid ratio, add distilled water, at 50 ℃, constant temperature stirs 60 minutes, dehydration is separated, the moisture content 70% of the tea dregs of rice, then carries out defibrination, defibrination under 0.2mm gap, after adding 10% wood pulp of being made by glycyrrhiza residue, pull an oar, it is 35 ° of SR that beating consistency is controlled at 13% beating degree.Slurry is sent into slurry storage tank, and storage slurry concentration is 3% left and right, then sends into and rush stock tank, and its concentration is 1.5%, finally sends into paper machine and makes tobacco leaf paper substrate, and paper substrate weight per unit area is 80 ± 1g/m
2, thickness 0.35～0.40mm; Moisture 8%.Lotion is 90% tea juice, 10% succus liquiritiae mixed liquor, under 80 ℃, 0.04MPa negative pressure, concentrated concentration is 35%, in concentrate, adding low-boiling tobacco aromatics using is: fixastive, fumet and humectant etc., tobacco leaf paper substrate is carried out to concentrate dip-coating in 80 ℃ of temperature, dry through microwave baking, be shredded into rhomboid leaf sheet, make finished product tobacco leaf.Weight per unit area is 120～140g/m
2, thickness 0.35～0.40mm, moisture 11～13%.
Embodiment bis-:
Take glycyrrhiza residue, the tea dregs of rice is pulping raw material, and glycyrrhiza residue adds distilled water in the liquid ratio ratio of 6: 1, and at 80 ℃, constant temperature stirs 60 minutes, and dehydration is separated, the moisture content 80% of glycyrrhiza residue; The tea dregs of rice add distilled water in the liquid ratio ratio of 5: 1, and at 50 ℃, constant temperature stirs 60 minutes, and dehydration is separated, and tea dregs of rice moisture content is 70%, then carries out defibrination.Glycyrrhiza residue defibrination for the first time under 0.5mm gap, the thick slurry of the Radix Glycyrrhizae of grinding mix with the tea dregs of rice, under 0.2mm gap, carry out defibrination for the second time, the tea dregs of rice and glycyrrhiza residue ratio are 8: 2; Beating consistency is controlled at 10%, and beating degree is 35 ° of SR, and slurry is sent into storage by groove, storage slurry concentration 3%, then send into and rush stock tank, its concentration is 1%, finally sends into paper machine copy paper and makes as the paper substrate of embodiment mono-.Paper substrate unit are is 90g/m
2; Thickness 0.35～0.45mm; Moisture 9%.Lotion is 80% tea extract, 20% licorice extract mixture, and concentrated under 70 ℃, the negative pressure of 0.06MPa, concentration is 40%.Dip-coating is on paper substrate at twice, feed liquid ratio 10: 8, the proportion of lotion is 1.3,80% lotion of dip-coating for the first time, 120 ℃ of bake out temperatures, drying time 20 seconds, after substrate is dry, in residue 20% lotion, adds glycyrol 2% (weight ratio) and carry out dip-coating for the second time, 100 ℃ of bake out temperatures, drying time 10 seconds.Then by PROCESS FOR TREATMENT in embodiment mono-, make finished product tobacco leaf.
Accompanying drawing is: a kind of tea raw material paper process such as inferior grade tealeaves, tea dust of utilizing are produced the process chart of the method for nontoxic tobacco leaf.
1, tealeaves, Radix Glycyrrhizae 2, select materials 3, expanded 4, extraction 5, Separation of Solid and Liquid (a liquid a
1concentrated a
2flavoring and casing a
3lotion; B solid b
1slurrying b
2copy paper b
3substrate) 6, dip-coating 7, dry 8, dip-coating 9, dry tear up 10, finished product.
Claims (5)
1. the method for utilizing tealeaves, tea dust raw material paper process to produce nontoxic tobacco leaf, the steps include:
A, by tealeaves, tea dust raw material from sense index, qualified products are selected in physical and chemical index and sanitary index aspect, and after chopping, use normal-temperature distilled water infiltration, control water content 25% (weight ratio) with interior carry out expanded, extract;
B, Separation of Solid and Liquid, will remove respectively tea aroma composition, and the tea dregs of rice of caffeine and Tea Polyphenols carry out defibrination;
C, make oar after adding the wooden oar grinding with glycyrrhiza residue to mix, the addition that glycyrrhiza residue grinds into wooden oar is the 10-20% of paper oar total amount, beats oar concentration 10%, beating degree 25-35 ° of SR;
D, storage slurry concentration are controlled in 3%, rush the degree of beating and are controlled at 1-1.5%, carry out upper machine copy paper and make tobacco leaf paper substrate, and the moisture of paper substrate is controlled at 8%;
E, tealeaves, licorice extract are at temperature 60-80 ℃, and under vacuum 0.5-0.8MPa condition, tealeaves, licorice extract are concentrated into the medicinal extract that concentration is 25-35%, add in proportion tobacco aromatics using;
F, by the dip-coating twice in concentrate of tobacco leaf paper substrate, temperature during dip-coating is 70-90 ℃;
G, be dried, tear up, pack, make nontoxic tobacco leaf.
2. the method for utilizing tealeaves, tea dust raw material paper process to produce nontoxic tobacco leaf as claimed in claim 1, the extractant using while the steps include: to extract is water, CO
2, N
2, Ar, ethanol, methyl alcohol, acetone, acetic acid ethanol or betaine.
3. the method for utilizing tealeaves, tea dust raw material paper process to produce nontoxic tobacco leaf as claimed in claim 1 or 2, the steps include: that extraction temperature is 20-50 ℃.
4. the method for utilizing tealeaves, tea dust raw material paper process to produce nontoxic tobacco leaf as claimed in claim 1, the steps include: that adopted tobacco aromatics using is fixastive, fumet and humectant.
5. the method for utilizing tealeaves, tea dust raw material paper process to produce nontoxic tobacco leaf as claimed in claim 1, the steps include: to be dried for the first time employing tunnel-type hot air drying process, adopts for the second time balance drying process.
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| CN200910169204.7A CN101991182B (en) | 2009-08-24 | 2009-08-24 | Method for producing nontoxic and harmless tobacco leaves from low-grade tea leaves, tea dust and other tea raw materials by paper making method |
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| CN200910169204.7A CN101991182B (en) | 2009-08-24 | 2009-08-24 | Method for producing nontoxic and harmless tobacco leaves from low-grade tea leaves, tea dust and other tea raw materials by paper making method |
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| CN101991182B true CN101991182B (en) | 2014-04-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102697162B (en) * | 2012-06-04 | 2015-04-22 | 华宝食用香精香料（上海）有限公司 | Preparation method for tobacco sheet with compound natural ingredient |
| CN103653234A (en) * | 2012-08-30 | 2014-03-26 | 徐兵 | Aerosolization suction product with caffeine and the like and insomnia treatment function |
| CN103040087B (en) * | 2012-11-07 | 2015-01-07 | 广东中烟工业有限责任公司 | Preparation method and application of functionality tobacco sheets for improving shred conglutination and sweet returning |
| CN105861159A (en) * | 2014-09-10 | 2016-08-17 | 邹玉华 | Preparing method for black tea flavor for tobacco |
| CN106666815A (en) * | 2017-02-22 | 2017-05-17 | 云南中烟新材料科技有限公司 | Method of using liquorice root for cigarette generation after liquorice root primary processing |
| CN109430926A (en) * | 2018-10-12 | 2019-03-08 | 武汉醉吟茶品茶业科技有限公司 | A kind of preparation method for cigarette sifting tea |
| CN114732147A (en) * | 2021-01-08 | 2022-07-12 | 中烟施伟策（云南）再造烟叶有限公司 | Method for preparing non-tobacco-cocoa type cigarette material by wet papermaking powder forming technology |
| CN113558271A (en) * | 2021-05-11 | 2021-10-29 | 林清矫 | Tea leaf recycling processing technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1692842A (en) * | 2005-05-19 | 2005-11-09 | 李�荣 | Reproduced tobacco by adding tea |
| CN1907149A (en) * | 2006-07-31 | 2007-02-07 | 福建省安溪县铁观音文化传播有限公司 | Method for manufacturing tealamina for cigarette |
| CN1957777A (en) * | 2006-11-22 | 2007-05-09 | 厦门卷烟厂 | Method for preparing slices reconstituted from tea, and application in tobacco product |
| CN101011186A (en) * | 2007-01-26 | 2007-08-08 | 云南瑞升烟草技术（集团）有限公司 | Reconstructed tobacco leaf formulation material using non-tobacco paper making method, its preparation and operation method |
| WO2007126361A9 (en) * | 2006-04-28 | 2008-03-27 | Swedish Match North Europe Ab | A moist snuff non-tobacco composition and a method for production thereof. |
-
2009
- 2009-08-24 CN CN200910169204.7A patent/CN101991182B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1692842A (en) * | 2005-05-19 | 2005-11-09 | 李�荣 | Reproduced tobacco by adding tea |
| WO2007126361A9 (en) * | 2006-04-28 | 2008-03-27 | Swedish Match North Europe Ab | A moist snuff non-tobacco composition and a method for production thereof. |
| CN1907149A (en) * | 2006-07-31 | 2007-02-07 | 福建省安溪县铁观音文化传播有限公司 | Method for manufacturing tealamina for cigarette |
| CN1957777A (en) * | 2006-11-22 | 2007-05-09 | 厦门卷烟厂 | Method for preparing slices reconstituted from tea, and application in tobacco product |
| CN101011186A (en) * | 2007-01-26 | 2007-08-08 | 云南瑞升烟草技术（集团）有限公司 | Reconstructed tobacco leaf formulation material using non-tobacco paper making method, its preparation and operation method |
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