CN101438852A - Technique for preparing thin slice of tobacco and prepared thin slice of tobacco - Google Patents
Technique for preparing thin slice of tobacco and prepared thin slice of tobacco Download PDFInfo
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- CN101438852A CN101438852A CNA2008102042821A CN200810204282A CN101438852A CN 101438852 A CN101438852 A CN 101438852A CN A2008102042821 A CNA2008102042821 A CN A2008102042821A CN 200810204282 A CN200810204282 A CN 200810204282A CN 101438852 A CN101438852 A CN 101438852A
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Abstract
The invention provides a technique for preparing tobacco sheets and the tobacco sheets. The technique comprises the following steps: soaking tobacco materials in water to obtain extract liquid and a water-insoluble solid; carry out enzymatic hydrolysis on the extract liquid by pectinase and/or protease so as to obtain a first water-soluble extract; degrading the protein in the water-insoluble solid by the protease so as to obtain an enzyme-hydrolyzed water-insoluble solid and a second water-soluble extract; placing the enzyme-hydrolyzed water-insoluble solid in acidic alcohol solution so as to acid-degrade lignose, then preparing the separated solid into tobacco sheet bases; and carrying out vacuum concentration on the first and the second water-soluble extracts and applying the first and the second water-soluble extracts to the tobacco sheet bases to prepare the tobacco sheets. The technique can effectively reduce the content of water-soluble pectin and water-insoluble protease, and reduce the unique lignin flavor in the tobacco sheets by the chemical degradation of the lignose.
Description
Technical field
The present invention relates to the tobacco processing technology, especially relate to and a kind ofly prepare the technology of high-quality reconstituted tobacoo, also relate to the reconstituted tobacoo that makes by this technology by large biological molecule in the degrading tobacco raw material.
Mainly be the enzymolysis chemical treatment of tobacco material after lixiviate, be about to offal, offal, cigarette label, tobacco leaf fragment and cigarette rod and add enzyme preparation respectively and chemical reagent carries out the raw materials for production preliminary treatment according to the large biological molecule dissolubility is different with chemical characteristic after according to lixiviate, make and be unfavorable for that the tobacco macromolecular substances that burns and sucks changes small-molecule substance into or removes, improve burning and inhale flavor, improve cigarette quality.
Background technology
Reconstituted tobacoo has another name called reorganization tobacco, reconstituted tobacco, is to be raw material with the tobacco dead meal in redrying and the production of cigarettes process such as offal, offal, cigarette label, tobacco leaf fragment and cigarette rod and part discarded tobacco leaf etc., through reconfiguring the regeneration tobacco leaf that processes.To not only can reduce unit consumption of tobacco leaf in order to mix cigarette through the lixiviate concentrate dip-coating of above-mentioned tobacco dead meal or the reconstituted tobacoo finished product that sprayed, create very high economic benefit.Can also improve the utilization rate (this utilization rate U.S. is 99%, and Japan is 95%, and China is about 50%) of tobacco material, reduce the tobacco planting area, save in a large number and plough.In addition, mix tar and nicotine content that thin slice can also reduce or adjust cigarette, thereby improve the security of smoking, thereby at home and abroad tobacco business is rapidly applied.The production technology of reconstituted tobacoo is mainly utilized paper process, thick slurry method and roll-in method.Domestic based on producing tobacco flake in method similar to papermaking, but its technology is a raw-material physics regrouping process to a great extent, on chemical composition, resulting in this way reconstituted tobacoo is with little as the chemical composition difference of the offal of raw material, offal, cause reconstituted tobacoo to have that assorted gas is heavy, excitant is big like this and xylon gas is strong etc. inhales the flavor defective, influenced result of use and the addition of thin slice in cigarette product.
Yet, in natural baccy, contain 1.5～15% protein, 5～12% pectin and 3～15% lignin usually.These three kinds of large biological molecules exist when content is higher in the reconstituted tobacoo, can influence the suction flavor of the cigarette product that has added this reconstituted tobacoo.At present, the existing report that reduces the content of the large biological molecule in the thin slice by biological degradation method.CN1600183A discloses a kind of preparation technology of tobacco sheets by paper making method, wherein adds enzyme preparation or microorganism formulation in tobacco hydrotrope concentrate, with the big molecule of degradation biological.But protein content is water-insoluble protein more than 90% in the tobacco, add that lignin is insoluble substantially, thereby protein and content of lignin seldom cause this method very little to the removal effect of these two kinds of materials in the extract, and to inhale the flavor effect little so reconstituted tobacoo improved.CN1836589A discloses a kind of papermaking-method reconstituted tobaccos lixiviate, concentration technology, wherein relates in the tobacco material before lixiviate and adds enzyme preparation.Yet, carry out the enzyme degraded before the described lixiviate of CN1836589A, a suitable enzymolysis buffer system is not provided, do not mention yet the obvious xylon gas that produces is degraded with some lignin that sting peppery sense, thereby to reducing the most outstanding xylon gas of reconstituted tobacoo, it is not remarkable to improve suction flavor effect.
Summary of the invention
The technical problem to be solved in the present invention proposes a kind of new reconstituted tobacoo preparation technology at existing defective in the above-mentioned prior art just, to reduce the content of macromolecular compounds such as pectin in the reconstituted tobacoo, protein and lignin effectively, reduce assorted gas, reduce excitant and xylon gas, improve the cigarette igniting and sucking quality.
One aspect of the present invention provides a kind of preparation technology of reconstituted tobacoo, and may further comprise the steps: a. is soaked in water tobacco material with the water-soluble thing of extracted tobacco, and obtains leaching liquor and water insoluble solid through Separation of Solid and Liquid; B. enzyme preparation is added in the gained leaching liquor, obtain first water-soluble extractive through enzyme digestion reaction, described enzyme preparation is pectase or protease or both combinations; C. the gained water insoluble solid is mixed with water, utilize proteasome degradation protein wherein, again the water insoluble solid and second water-soluble extractive after Separation of Solid and Liquid obtains enzymolysis; D. the enzyme-hydrolyzed water-insoluble that step c is obtained places the alcoholic solution of acid, and wherein lignin is carried out acid degradation, will make reconstituted tobacoo sheet base through the solid that Separation of Solid and Liquid obtains again; E. described first water-soluble extractive and second water-soluble extractive are applied on the described base through the concentrate that concentration obtains, drying is made described reconstituted tobacoo again.
In preparation technology of the present invention, the acid described in the steps d is the volatile acid that is selected from nitric acid, hydrochloric acid, hydrofluoric acid, hydrobromic acid and acetic acid, and described alcohol is the lower alcohol that is selected from methyl alcohol, ethanol and isopropyl alcohol.
In preparation technology of the present invention, the alcoholic solution of acid is an ethanol solution hydrochloride described in the steps d, wherein the mass content of HCl is 1%～5%, described acid degradation process comprises: with the described enzyme-hydrolyzed water-insoluble of every 100g, mix with the described ethanol solution hydrochloride of 200ml～500ml, and added hot reflux 0.5～5 hour.
Another aspect of the present invention provides a kind of reconstituted tobacoo of making according to preparation technology of the present invention, and the content of lignin reduces more than 40% than the content in the used tobacco material in the described reconstituted tobacoo.
Beneficial effect of the present invention is:
After tobacco material extracts with flooding, water soluble pectin is separated out substantially, pectin is the macromolecular substances that is polymerized by beta galactose aldehydic acid, also contain many micromolecular sugar on its side chain, effect enzymolysis by pectase becomes small-molecule substances such as monose, these micromolecular glucides burn and suck in the process tobacco, can be used as sugared source and participate in the Maillard reaction process, enrich cigarette perfume (or spice).
Protein burning frowziness has adverse influence to burning and sucking flavor.Show that by bibliographical information and analyzing and testing the albumen quality in the tobacco more than 90% is water insoluble, by the flooding extraction, most protein are also stayed in the tobacco insoluble solid.The present invention is by adding protease protein in the enzymolysis insoluble solid under suitable condition, and a certain amount of protein of can degrading generates small-molecule substances such as amino acid, and the amino acid of gained participates in Maillard reaction with the monose that pectin decomposes gained.So promptly reduce protein content, improved the combustion quality of reconstituted tobacoo again.
Also have, reconstituted tobacoo is from the effect angle analysis of smokeing panel test, and xylon gas is very obvious, and this mainly is and the wooden breath that causes higher than common tobacco leaf of content of lignin such as offal.Lignin is a kind of complicated phenol polymer that is formed by four kinds of alcohol monomers (to tonquinol, coniferyl alcohol, 5-hydroxyl coniferyl alcohol, sinapinic alcohol), is one of composition that constitutes plant cell wall, covalent bonds and very firm, thereby enzyme process is difficult to degraded.The present invention is by acid degradation, and content of lignin descends very obvious.
On sheets of fibres sheet base, and the chopping rolling cigarette smokes panel test, and finds that by smokeing panel test xylon gas significantly weakens with the concentrate dip-coating, stings peppery sense and assorted gas alleviates, and fragrance and pleasant impression are significantly improved.
The specific embodiment
Those skilled in the art below content of the present invention are described further, so that can more be expressly understood and implement the present invention.
The present invention is mainly based on such design: the water-soluble and enzyme degradability different according to large biological molecule in the tobacco material, and adopt enzyme process-chemical method to combine, degraded respectively step by step and targetedly, to improve degradation effect.
Concrete technology to preparation reconstituted tobacoo of the present invention is as follows.
Be soaked in water the tobacco material that the preparation reconstituted tobacoo is used with the water-soluble thing of extracted tobacco.Described tobacco material can be offal, offal, cigarette label, tobacco leaf fragment, cigarette rod or its combination that cigar mill produces.Usually, used tobacco material is above-mentioned several combination, and the not special regulation of the ratio between them generally can be come proportioning according to the amount of the actual generation of cigarette process of factory production.Can carry out Mechanical Crushing to tobacco material before immersion, raw material is crushed to length less than 30mm, diameter is less than 5mm.Perhaps, do not carry out fragmentation earlier in this step, but in subsequent step, carry out fragmentation again.The described tobacco material of every 100g can preferably steep with the water logging of 500～800ml with the water logging bubble of 200～1000ml, and soaking temperature is 40～80 ℃, and soak time is 0.5～2 hour.After soaking end, solid-liquid isolation methods such as squeezing of using always through this area or centrifugal filtration obtain the leaching liquor of tobacco material and the water insoluble solid that wets.Through above-mentioned operation, the major part of the pectin in the tobacco material and the fraction of protein enter in the leaching liquor, and lignin and most of protein remains are stayed in the described solid.
In the gained leaching liquor, add an amount of pectase, be dissolved in wherein pectin with degraded.The enzyme preparation type of pectase and the selection of consumption, those of ordinary skills can determine according to the pectin content in the tobacco material, required palliating degradation degree.And the pectase reaction condition also can be determined according to the optimum activity scope of selected pectase and required pectin degrading degree.Therefore, this paper does not make special regulation to above-mentioned parameter.Usually, can make pectin content in the thin slice that the present invention makes at last than the minimizing in the raw material more than 40%.In specific embodiments of the invention, can in every 100ml leaching liquor, add the pectase preparation of 500～2000U, be 5～7 in the pH value, temperature be 30～60 ℃, and stirring condition under, reacted 2～8 hours, enzyme then goes out.Randomly, can also in leaching liquor, add an amount of protease preparation, to decompose water soluble protein wherein.Obtain first water-soluble extractive through above-mentioned enzyme digestion reaction, wherein contain the monose that the fructose degraded obtains.
To obtain behind the above-mentioned water logging bubble water insoluble solid carry out earlier Mechanical Crushing to length less than 10mm, diameter is less than 2mm, and then, every 100g water insoluble solid mixes with the water of 100～300ml, add an amount of protease preparation again, the protein under suitable enzyme reaction condition in the degradable solid.The type of protease, consumption and reaction condition, those of ordinary skills can determine that this paper does not make special regulation to this according to the protein content in the tobacco material, required palliating degradation degree and the characteristic of protease.Usually, can make in the thin slice that the present invention makes at last protein content than the minimizing in the raw material about 40% or more than.In specific embodiments of the invention, can be corresponding every 100g tobacco material adds the GC710 bacterium neutral proteinase of 0.1～0.5g 1600U/ml vigor, is 5～7 in pH value, temperature is 30～60 ℃, reaches under the stirring condition, reacts 2～8 hours, and enzyme then goes out.Those skilled in the art are easy to use the vigor of protease to adjust its addition according to reality.Material behind the mmp reaction again through squeezing or Separation of Solid and Liquid such as centrifugal, is obtained the water insoluble solid and second water-soluble extractive behind the enzymolysis.The protein that still has the lignin in the tobacco material and be not degraded in the described enzyme-hydrolyzed water-insoluble, and contain the catabolite of protein in second water-soluble extractive, as amino acid etc.
Subsequent, with described enzyme-hydrolyzed water-insoluble, place the alcoholic solution of acid, wherein lignin is carried out acid degradation.Particularly, the described enzyme-hydrolyzed water-insoluble of every 100g with 200～500ml, can be preferably ethanol solution hydrochloride (be made up of hydrochloric acid and ethanol, wherein the mass content of HCl is 1%～5%) mixture of 200～300ml, and add hot reflux 0.5～5 hour.Wherein hydrochloric acid can use the volatile acid of nitric acid, hydrofluoric acid, hydrobromic acid or acetic acid and so on to substitute, and ethanol can substitute with the lower alcohol that is selected from methyl alcohol, ethanol and isopropyl alcohol.These acid and pure are removed by volatilization easily, and are difficult for remaining in the product.Acidolysis reaction carries out Separation of Solid and Liquid after finishing, and wherein can then the solid that obtains be made reconstituted tobacoo sheet base by this area paper process, thick slurry method or roll-in method commonly used with an amount of water washing solid to remove residual acid and pure.
Also have, first water-soluble extractive and second water-soluble extractive that makes previously merged, it is carried out the vacuum concentration, and the concentrate that obtains is applied to reconstituted tobacoo when obtaining on the described base by methods such as dip-coating or sprayings.Drying is cut into slices and is made the reconstituted tobacoo finished product again.Wherein vacuum is concentrated under 45～65 ℃ and carries out, and it is 30～60% that the solid content in the last concentrate generally is controlled to be content; First and second water-soluble extractives also can concentrate after-applied to the sheet base respectively.Described dip-coating or spraying concentrate, drying and to cut step be routine techniques well-known in the art.
Further illustrate content of the present invention below in conjunction with specific embodiment.
Pectase: the liquid pectase, 30000U/ml, mcroorganism Engineering Co., Ltd is swelled in Shandong.
Protease: GC710 bacterium neutral proteinase, 1600U/ml, the Wuxi is outstanding can enzyme preparation Co., Ltd of section.
Embodiment one:
With offal, offal, cigarette rod and 4 kinds of raw materials for production of cigarette label mix according to the ratio of 7:3:3:1 and take by weighing 100g, with 700ml water at 70 ℃ of following soaking and stirring 40min, stir speed (S.S.) is 200 rev/mins (agitator is the S-312 digital display thermostatic mixer of Shensheng Science ﹠ Tech. Co., Ltd., Shanghai), separate through squeezing, obtain 470ml tobacco water-soluble extractive, insert in the bioreactor (Shen, Shanghai is along the R-S type reactor of bio tech ltd), add liquid pectase 0.15g, in temperature is 50 ℃, and stir speed (S.S.) is under 220 rev/mins, behind the enzyme digestion reaction 5h, stop to react the enzyme that goes out, enzyme-removal temperature is 95 ℃, and the enzyme time of going out is 15min, gets the tobacco water-soluble extractive 1..
With pulverizer (going up the pulverizer-section type of Haidian Chinese traditional medicine machine of a specified duration Manufacturing Co., Ltd) the insoluble wet solid of the 310g tobacco that obtains after the lixiviate was carried out Mechanical Crushing 10 seconds, insert in the bioreactor (Shen, Shanghai is along the R-S type reactor of bio tech ltd), add 620ml water, liquid neutral proteinase 0.25g, in temperature is 45 ℃, stir speed (S.S.) is under 220 rev/mins, enzyme digestion reaction 7h.After reaction finishes, squeezing separates, the enzymolysis water-soluble extractive enzyme that goes out, and enzyme-removal temperature is 100 ℃, time is 10min, the tobacco water-soluble extractive 2., merge 1. and 2., gained filtrate is transferred to vacuum concentrating instrument (the RE-52AA type Rotary Evaporators of the refined flourish biochemical instrument equipment in Shanghai Co., Ltd) and is carried out concentration, the temperature that concentrates is controlled at 60 ℃, when filtrate is concentrated into dark brown brown semi-fluid shape thing solid, stop to concentrate concentrate, be 42.3% through surveying solid content.
Water insoluble solid 280g after the enzyme processing is placed reactor, the ethanol solution hydrochloride 300ml of adding 2.5% (is made up of hydrochloric acid and absolute ethyl alcohol, wherein the mass content of HCl is 2.5%), 200 rev/mins of stir speed (S.S.)s (agitator is the S-312 digital display thermostatic mixer of Shensheng Science ﹠ Tech. Co., Ltd., Shanghai), under 106 ℃ of temperature, add hot reflux 0.5h, after reaction finishes, the squeezing separate solid, solid refilters separation with 300ml water logging bubble, abandon reactant liquor, the gained solid is with the paper process sheet base of laminating.
Reconstituted tobacoo after handling is carried out chemical analysis, and pectin content reduces 52.3% as a result, and protein content reduces 40.5%, and content of lignin reduces 40.5%.
On thin slice sheet base, after the drying operation, and the chopping rolling cigarette smokes panel test with the concentrate dip-coating, and fragrance and pleasant impression are significantly improved as a result, and excitant and xylon gas obviously descend.
Embodiment two:
Identical among the equipment that uses in the present embodiment and the embodiment one.
Offal, offal, cigarette rod and cigarette are signed 4 kinds of raw materials for production to be mixed according to the ratio of 6:2:2:1 and takes by weighing 100g, with 800ml water at 65 ℃ of following soaking and stirring 35min, stir speed (S.S.) is 220 rev/mins, separate through squeezing, obtain 550ml tobacco water-soluble extractive, insert in the bioreactor, add liquid pectase 0.20, in temperature is 55 ℃, and stir speed (S.S.) is under 220 rev/mins, behind the enzyme digestion reaction 4h, stop to react the enzyme that goes out, enzyme-removal temperature is 100 ℃, and the enzyme time of going out is 10min, gets the tobacco water-soluble extractive 1..
The insoluble wet solid of 320g tobacco that obtains after to lixiviate with pulverizer carried out Mechanical Crushing 15 seconds, inserted in the bioreactor, added 640ml water, and liquid neutral proteinase 0.20g is 50 ℃ in temperature, and stir speed (S.S.) is under 250 rev/mins, enzyme digestion reaction 8h.After reaction finishes, squeezing separates, the enzymolysis water-soluble extractive enzyme that goes out, and enzyme-removal temperature is 95 ℃, time is 12min, the tobacco water-soluble extractive 2., merge 1. and 2., gained filtrate is transferred to the vacuum concentrating instrument and carried out concentration, the temperature that concentrates is controlled at 55 ℃, when filtrate is concentrated into dark brown brown semi-fluid shape thing solid, stop to concentrate concentrate 3., be 45.8% through surveying solid content.
Water insoluble solid 285g after the enzyme processing is placed reactor, the absolute ethyl alcohol 350ml that adds 2.0%HCl, 250 rev/mins of stir speed (S.S.)s, under 105 ℃ of temperature, add hot reflux 1.0h, after reaction finishes, the squeezing separate solid, solid refilters separation with 350ml water logging bubble, abandons reactant liquor, and the gained solid is with the paper process sheet base of laminating.
Reconstituted tobacoo after handling is carried out chemical analysis, and pectin content reduces 48.3% as a result, and protein content reduces 37.5%, and content of lignin reduces 50.2%.
On thin slice sheet base, after the drying operation, and the chopping rolling cigarette smokes panel test with the concentrate dip-coating, and fragrance and pleasant impression are improved significantly as a result, and xylon gas significantly descends.
Embodiment three
Unless otherwise indicated, identical among the equipment that uses in the present embodiment and the embodiment one.
Offal, offal, cigarette rod and cigarette are signed 4 kinds of raw materials for production to be mixed according to the ratio of 7:2:2:1 and takes by weighing 100g, with 600ml water at 80 ℃ of following soaking and stirring 30min, stir speed (S.S.) is 180 rev/mins, separate through squeezing, obtain 380ml tobacco water-soluble extractive, insert in the 1000ml vial, add liquid pectase 0.10g, in temperature is 45 ℃, and stir speed (S.S.) is under 180 rev/mins, enzyme digestion reaction 4.5h, stop to react the enzyme that goes out, enzyme-removal temperature is 95 ℃, and the time is 12min, gets the tobacco water-soluble extractive 1..
The insoluble wet solid of 300g tobacco that obtains after to lixiviate with pulverizer carried out Mechanical Crushing 8 seconds, added 600ml water, and liquid neutral proteinase 0.30g is 55 ℃ in temperature, and stir speed (S.S.) is under 180 rev/mins, enzyme digestion reaction 8h.After reaction finishes, squeezing separates, the enzymatic hydrolyzed extract enzyme that goes out, and enzyme-removal temperature is 90 ℃, time is 15min, the tobacco water-soluble extractive 2., merge 1. and 2., gained filtrate is transferred to the vacuum concentrating instrument and carried out concentration, the temperature that concentrates is controlled at 55 ℃, when filtrate is concentrated into dark brown brown semi-fluid shape thing solid, stop to concentrate concentrate 3., be 53.2% through surveying solid content.
Water insoluble solid 275g after the enzyme processing is placed reactor, the absolute ethyl alcohol 300ml that adds 3.0%HCl, 180 rev/mins of stir speed (S.S.)s, under 107 ℃ of temperature, add hot reflux 1.5h, after reaction finishes, the squeezing separate solid, solid refilters separation with 300ml water logging bubble, abandons reactant liquor, and the gained solid is with the paper process sheet base of laminating.
Reconstituted tobacoo after handling is carried out chemical analysis, and pectin content reduces 42.3% as a result, and protein content reduces 42.5%, and content of lignin reduces 58.5%.
On thin slice sheet base, after the drying operation, and the chopping rolling cigarette smokes panel test with the concentrate dip-coating, and fragrance and pleasant impression are improved significantly as a result, and xylon gas significantly descends, and excitant is slightly improved.
Claims (10)
1, a kind of preparation technology of reconstituted tobacoo is characterized in that, may further comprise the steps:
A. tobacco material is soaked in water with the water-soluble thing of extracted tobacco, and obtains leaching liquor and water insoluble solid through Separation of Solid and Liquid;
B. enzyme preparation is added in the gained leaching liquor, obtain first water-soluble extractive through enzyme digestion reaction, described enzyme preparation is pectase or protease or both combinations;
C. the gained water insoluble solid is mixed with water, utilize proteasome degradation protein wherein, again the water insoluble solid and second water-soluble extractive after Separation of Solid and Liquid obtains enzymolysis;
D. the enzyme-hydrolyzed water-insoluble that step c is obtained places the alcoholic solution of acid, and wherein lignin is carried out acid degradation, will make reconstituted tobacoo sheet base through the solid that Separation of Solid and Liquid obtains again;
E. described first water-soluble extractive and second water-soluble extractive are applied on the described base through the concentrate that concentration obtains, drying is made described reconstituted tobacoo again.
2, according to the described preparation technology of claim 1, it is characterized in that: the acid described in the steps d is the volatile acid that is selected from nitric acid, hydrochloric acid, hydrofluoric acid, hydrobromic acid and acetic acid, and described alcohol is the lower alcohol that is selected from methyl alcohol, ethanol and isopropyl alcohol.
3, according to the described preparation technology of claim 1, it is characterized in that: the alcoholic solution of acid is an ethanol solution hydrochloride described in the steps d, wherein the mass content of HCl is 1%～5%, described acid degradation process comprises: with the described enzyme-hydrolyzed water-insoluble of every 100g, mix with the described ethanol solution hydrochloride of 200ml～500ml, and added hot reflux 0.5～5 hour.
4, according to each described preparation technology in the claim 1～3, it is characterized in that: among the step a, the described tobacco material of every 100g steeps with the water logging of 200～1000ml, and soaking temperature is 40～80 ℃, and soak time is 0.5～2 hour; Described tobacco material is selected from: offal, offal, cigarette label, tobacco leaf fragment, cigarette rod or its combination, and the length of described tobacco material is less than 30mm, and diameter is less than 5mm.
According to each described preparation technology in the claim 1～3, comprise also that 5, before the described enzymolysis of step c, the water insoluble solid that obtains among the step a is crushed to length less than 10mm, diameter is less than 2mm.
6, according to each described preparation technology in the claim 1～3, it is characterized in that: enzyme preparation described in the step b is a pectase preparation, enzymolysis process comprises: the pectase preparation that adds 500～2000U in every 100ml leaching liquor, be 5～7 in the pH value, temperature be 30～60 ℃, and stirring condition under, reacted 2～8 hours.
7, according to each described preparation technology in the claim 1～3, it is characterized in that: among the step c, the mixing ratio of described water insoluble solid and water is the water of the described water insoluble solid of every 100g to 100～300ml, and described protease is the neutral protein enzyme preparation that accounts for the 1600U/ml of described tobacco material mass percent 0.1～0.5%; Degrade proteins be reflected at that the pH value is 5～7, temperature be 30～60 ℃, and stirring condition under carried out 2～8 hours.
8, according to each described preparation technology in the claim 1～3, it is characterized in that: the Separation of Solid and Liquid described in each step is separated or centrifugation for squeezing.
9, according to each described preparation technology in the claim 1～3, it is characterized in that: described first water-soluble extractive and second water-soluble extractive carry out respectively or merge after carry out described concentration; Described concentration is meant that vacuum concentrates, and wherein thickening temperature is 45～65 ℃, and the solid content in the described concentrate is 30～60%; The applying method of described concentrate is dip coating or spraying process.
10, a kind of reconstituted tobacoo of making according to each described preparation technology in the claim 1～9, the content of lignin reduces more than 40% than the content in the used tobacco material in the described reconstituted tobacoo.
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2008
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