CN109832654A - A kind of cigarette low temperature multiple roasting method and its redried of preparation - Google Patents
A kind of cigarette low temperature multiple roasting method and its redried of preparation Download PDFInfo
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- CN109832654A CN109832654A CN201910024683.7A CN201910024683A CN109832654A CN 109832654 A CN109832654 A CN 109832654A CN 201910024683 A CN201910024683 A CN 201910024683A CN 109832654 A CN109832654 A CN 109832654A
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Abstract
The invention discloses a kind of cigarette low temperature multiple roasting methods.The multiple roasting method includes the following steps: freezing stage: the moisture in material piece cigarette is frozen into solid-state；Drying phase under vacuum: by freezing piece cigarette vacuum drying, the removing of piece cigarette moisture is realized；Rise again the damping stage: vacuum drying cigarette continued into air drying, realize piece cigarette rise again and damping.The present invention is dry using vacuum ultralow temperature in the redrying stage, the high-temperature baking of opposite traditional handicraft, significantly reduce processing intensity, operation is succinct, low energy consumption, and the flavor matter of raw tobacco material is remained well, redried has clear improvement in terms of sensory quality indicator perfume quantity, aroma quality, the redrying of another aspect low temperature keeps the bioenzyme activity of tobacco leaf surface or inside well, excellent condition is created for the natural alcoholization in later period storage process, flue gas strength and concentration are obviously improved.
Description
Technical field
The present invention relates to tobacco material processing technique field, more particularly, to a kind of cigarette low temperature multiple roasting method and its
The redried of preparation.
Background technique
Traditional purpose of piece cigarette redrying is mainly adjusted moisture content in leaves, in favor of tobacco natural alcoholization, improves cigarette
Leaf quality.With the continuous improvement that cigarette enterprise requires raw tobacco material aroma characteristic, to redrying step process it is also proposed that
Higher requirement, the aroma characteristic for how preferably keeping high-quality characteristic tobacco raw material itself also become wanting for redrying process
One of ask.Piece cigarette redrying is the moisture content that piece cigarette is reduced using redrying heat, so that it is conducive to storage, is not susceptible to go mouldy, and is passed
After piece cigarette enters redrying machine in system technique: initially entering dryer section, piece cigarette initial aqueous rate is about 16%, and baking temperature is about
90-100 DEG C, after baking, piece cigarette moisture content drops to rapidly 9% hereinafter, subsequently entering cooling section, and cooling air-flow temperature is about 35
DEG C, decline piece smoke temperature degree, finally enter resurgence section, temperature is about 55 DEG C, improves piece cigarette moisture content, piece using hot steam
The last moisture control of cigarette is 12% or so.Piece cigarette passes through 90-100 DEG C of high-temperature baking in traditional redrying technique, causes a large amount of
Aroma substance scatters and disappears, and causes aesthetic quality to decline, and high temperature causes biological enzyme in blade all to lose activity substantially, is unfavorable for
The natural alcoholization of later period piece cigarette, in addition, moisture is higher when piece cigarette enters roasting machine, temperature is scattered and disappeared too fast compared with high-moisture, is easy to cause
Leaf rolling degree increases, and dry broken phenomenon occurs in precompressed packing process, raw tobacco material is caused to waste.The prior art
CN103315375A discloses a kind of multiple roasting method of offer redried quality, is arranged according to piece cigarette different parts corresponding
Entrance bake machine initial aqueous rate and baking curve, have certain decline compared with traditional baking temperature, but on the whole
The baking temperature of each subregion is not much different, although the reservation to fragrance matter has some improvement, irritation and miscellaneous gas simultaneously
The content of substance is also very high, cannot reach the overall quality of good tobacco leaf.
Therefore, for redrying process status, the aroma characteristic that can retain raw tobacco material how is obtained, the alcohol reached
Change effect and has become urgent problem to be solved in industry.
Summary of the invention
The technical problem to be solved by the present invention is to overcome excessively high caused aroma substance losses of existing cigarette redrying temperature etc.
Deficiency provides a kind of cigarette low temperature multiple roasting method, realizes redrying stage piece cigarette perfume gas object by freezing and vacuum drying treatment
The reservation of matter and the holding of bioenzyme activity.
Another object of the present invention is to provide a kind of redrieds of sheet above cigarette low temperature multiple roasting method preparation.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. the moisture in material piece cigarette freezing stage: is frozen into solid-state；
S2. drying phase under vacuum: the piece cigarette freezed in S1 is dried in vacuo, and realizes the removing of piece cigarette moisture；
S3. it rises again the damping stage: vacuum drying cigarette in S2 being continued into air drying, realizes rising again and adjusting for piece cigarette
It is wet；
Wherein the temperature of the freezing stage is -40~-30 DEG C, and the drying temperature of the drying phase under vacuum is 0~20
DEG C, drying to moisture is 13~14%.
The superfreeze that piece cigarette low temperature multiple roasting method of the invention passes through -40~-30 DEG C first keeps section inner sheet cigarette rapid
It freezes, the moisture quick freeze in piece cigarette, the piece cigarette after freezing enters vacuum drying section, makes consolidating in piece cigarette using vacuumizing
The evaporation of state water sublimate, realizes evaporation drying in ultra-low temperature surroundings, avoids and carries out high-temperature baking to tobacco leaf, greatly reduces
Processing intensity, retains the flavor matter in tobacco leaf utmostly, and low temperature drying keeps tobacco leaf surface well
Or internal bioenzyme activity, the inactivation of biological enzyme caused by high temperature is avoided, is that the natural alcoholization in later period storage process is created
Excellent condition.
The damping section of rising again of piece cigarette, which is utilized, is gradually warmed up simultaneously further piece cigarette with the essentially identical dry gas stream of environment temperature
Dry, after the completion of the stage, piece smoke temperature degree is substantially identical as room temperature, and low temperature redrying process terminates to complete, while having reached piece cigarette
Rise again and drying effect.
Relative to traditional 90~100 DEG C of high temperature redryings of piece cigarette redrying technique by piece cigarette moisture content drop to rapidly 9% hereinafter,
It is 12% with the final moisture content of vapor resurgence adjustment later and by cooling, multiple roasting method of the invention is in redrying rank
Moisture is only reduced to 13~14% (13% or so) by section, is then continued to dry by air drying to 12% again, not only simple
The process flow for having changed the redrying stage reduces energy consumption, and relative to piece cigarette moisture in routine techniques in baking section drop
Down to 9%, then to 12%, piece cigarette of the invention is reduced to 13% in baking section, then continues in section of rising again for cooling resurgence again
It is reduced to 12%, moisture, which mitigates, to be reduced, and is increased without reducing repeatedly, is significantly reduced energy consumption.
Vacuum drying temperature of the invention can be 0 DEG C, 5 DEG C, 10 DEG C or 20 DEG C.
Preferably, the drying phase under vacuum drying to moisture is 13%.
Preferably, drying phase under vacuum drying time described in S2 is 15~25min.Naturally temperature is generally utilized,
To reduce energy consumption.Drying temperature is higher, can shorten drying time.
Preferably, the drying temperature of drying phase under vacuum described in S2 is 10~20 DEG C.
Preferably, the vacuum degree of drying phase under vacuum described in S2 is 0.01~0.03Pa.Such as can be 0.01Pa,
0.02Pa or 0.03Pa, preferably 0.02Pa.
Preferably, the cryogenic temperature of freezing stage described in S1 is -40~-35 DEG C.
Preferably, the cooling time of freezing stage described in S1 is 20~30min.
Preferably, the superfreeze is that liquid nitrogen frozen or dry ice freeze.
Preferably, the damping stage is risen again described in S3, to the heating drying of piece cigarette, to dry to piece using air drying air-flow
Cigarette humidity is 12%.Air drying air-flow refers to the air at room temperature after drying herein.Speed is fixed, and temperature is simultaneously at this time
It is not high, so being had no significant effect to aroma substance and enzyme activity, it is ensured that original fragrance and enzyme activity.
Preferably, rise again described in S3 the damping stage heating rate be 0.5~1 DEG C/min, preferably 0.5 DEG C/min.
It rises again very fast, fragrance can be retained and enzyme activity is unfavorable.
A kind of piece cigarette obtained by sheet above cigarette low temperature multiple roasting method redrying is also within protection scope of the present invention.This
The moisture content of tobacco leaf can not only be effectively reduced in the piece cigarette that the low temperature redrying technique redrying of invention obtains, and reach dry-storage
Piece cigarette water demand, and can be good at retaining the original tobacco aroma of piece cigarette and smoke, flavouring essence quality and perfume quantity can
It is effectively maintained, suction organoleptic quality is good, main chemical compositions such as neophytadiene, Megastigmatrienone B, huge beans in redried
The content of three ketenes D etc. has preferable preservation.
Compared with prior art, the beneficial effects of the present invention are:
The present invention provides a kind of cigarette low temperature multiple roasting method and its redried of preparation, the redrying stage uses vacuum
Ultralow temperature is dry, and the high-temperature baking of opposite traditional handicraft significantly reduces processing intensity, and operation is succinct, and low energy consumption, and
The flavor matter of raw tobacco material is remained well, and redried has obviously in terms of sensory quality indicator perfume quantity, aroma quality
Improve, the redrying of another aspect low temperature keeps the bioenzyme activity of tobacco leaf surface or inside well, is in later period storage process
Natural alcoholization creates excellent condition, and flue gas strength and concentration are obviously improved.
Specific embodiment
Embodiment 1
Embodiment 1
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 16% initially enters freezing stage, makes a section inner sheet using dry ice
Cigarette quick freeze, -35 DEG C of cryogenic temperature, cooling time 20min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, and using vacuumizing, vacuum degree is
0.03Pa makes the solid-state water sublimate in piece cigarette, and control sheet cigarette moisture content is down to 13%, and temperature is controlled at 5 DEG C；
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and heating rate is 0.5 DEG C/min, and after the completion of the stage, piece smoke temperature degree is substantially and room temperature
Identical, moisture content 12%, low temperature redrying process terminates.
Embodiment 2
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 17% initially enters superfreeze section, makes section using liquid nitrogen
Inner sheet cigarette quick freeze, -40 DEG C of cryogenic temperature, cooling time 25min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, and using vacuumizing, vacuum degree is
0.02Pa makes the solid-state water sublimate in piece cigarette, and control sheet cigarette moisture content is down to 13%, and temperature is controlled at 0 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and heating rate is 0.5 DEG C/min, and after the completion of the stage, piece smoke temperature degree is substantially and room temperature
Identical, moisture content 12%, low temperature redrying process terminates.
Embodiment 3
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 18% initially enters superfreeze section, makes section using dry ice
Inner sheet cigarette quick freeze, -40 DEG C of cryogenic temperature, cooling time 30min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, and using vacuumizing, vacuum degree is
0.01Pa makes the solid-state water sublimate in piece cigarette, and control sheet cigarette moisture content is down to 14%, and temperature is controlled at 10 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and heating rate is 0.5 DEG C/min, and after the completion of the stage, piece smoke temperature degree is substantially and room temperature
Identical, moisture content 12%, low temperature redrying process terminates.
Embodiment 4
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 18% initially enters superfreeze section, makes section using dry ice
Inner sheet cigarette quick freeze, -40 DEG C of cryogenic temperature, cooling time 30min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, using vacuumizing, vacuum degree 0.01Pa,
Make the solid-state water sublimate in piece cigarette, control sheet cigarette moisture content is down to 14%, and temperature is controlled at 20 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and heating rate is 0.5 DEG C/min, and after the completion of the stage, piece smoke temperature degree is substantially and room temperature
Identical, moisture content 12%, low temperature redrying process terminates.
Embodiment 5
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 18% initially enters superfreeze section, makes section using dry ice
Inner sheet cigarette quick freeze, -40 DEG C of cryogenic temperature, cooling time 30min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, and using vacuumizing, vacuum degree is
0.01Pa makes the solid-state water sublimate in piece cigarette, and control sheet cigarette moisture content is down to 14%, and temperature is controlled at 20 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and heating rate is 1.0 DEG C/min, and after the completion of the stage, piece smoke temperature degree is substantially and room temperature
Identical, moisture content 12%, low temperature redrying process terminates.
Embodiment 6
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 18% initially enters superfreeze section, makes section using dry ice
Inner sheet cigarette quick freeze, -40 DEG C of cryogenic temperature, cooling time 30min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, and using vacuumizing, vacuum degree is
0.01Pa makes the solid-state water sublimate in piece cigarette, and control sheet cigarette moisture content is down to 14%, and temperature is controlled at 20 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and heating rate is 1.5 DEG C/min, and after the completion of the stage, piece smoke temperature degree is substantially and room temperature
Identical, moisture content 12%, low temperature redrying process terminates.
Comparative example 1
A kind of cigarette low temperature multiple roasting method, after piece cigarette enters redrying machine: initial aqueous rate is about 16% to initially enter drying
Section, baking temperature is about 100 DEG C, after baking, and piece cigarette moisture content drops to rapidly 9% or less；Subsequently enter cooling section, cooling air
Flowing temperature is about 35 DEG C, declines piece smoke temperature degree；Resurgence section is finally entered, temperature is about 55 DEG C, improves piece using hot steam
Cigarette moisture content, the last moisture control of piece cigarette is 12% or so.
Comparative example 2
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 16% initially enters freezing stage, makes a section inner sheet using dry ice
Cigarette quick freeze, -40 DEG C of cryogenic temperature, cooling time 25min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, using vacuumizing, makes the solid-state in piece cigarette
Water sublimate, control sheet cigarette moisture content are down to 17%, and temperature is controlled at 10 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried, and after the completion of the stage, piece smoke temperature degree is substantially identical as room temperature, and moisture content 12% is low
Warm redrying process terminates.
Comparative example 3
A kind of cigarette low temperature multiple roasting method, includes the following steps:
S1. freezing stage: the piece cigarette of initial aqueous rate about 16% initially enters freezing stage, makes a section inner sheet using dry ice
Cigarette quick freeze, -20 DEG C of cryogenic temperature, cooling time 25min；
S2. drying phase under vacuum: the piece cigarette after freezing enters vacuum drying section, using vacuumizing, makes the solid-state in piece cigarette
Water sublimate, control sheet cigarette moisture content are down to 14%, and temperature is controlled at 10 DEG C:
S3. rise again the damping stage: piece cigarette, which enters, rises again damping section, using with the essentially identical dry gas stream pair of environment temperature
Piece cigarette is gradually warmed up and is further dried,
As a result it detects
(1) aesthetic quality detects
Sample strip cigarette is cut into filament cutter to the pipe tobacco of width 1.0mm or so respectively, cigarette is rolled into, according to single-tobacco-typed cigarette
Description of smokeing panel test is given a mark.
Testing result is as shown in table 1 and shown in table 2, and wherein table 1 is that just redrying finishes, and table 2 is 18 after redrying
The moon (refines) by 1 year and a half.
(2) chemical component detects
Detecting instrument drug: the laboratory QS-2A tobacco leaf filament cutter (Zheng Zhou Jiade Electrical Technology Co., Ltd)； 6890N-
5975GC/MS combined instrument (Agilent company, the U.S.)；KBF240 climatic chamber (German BINDER company)；Methylene chloride
(excellent pure grade), naphthalene (excellent pure grade), anhydrous sodium sulfate (excellent pure grade), dehydrated alcohol (excellent pure grade).
Detection method
Take 100g for the piece cigarette sample of aroma component analysis, (55 DEG C of oven conditions temperature, dry sample by low temperature drying
Time 2 h) after, it crushed 60 meshes using Cyclone mill, it is to be checked.The sample 26g after pulverizing and sieving is weighed, is put into aluminium box,
(22 DEG C of equilibrium condition temperature, humidity 60%) is to be checked after balancing 12-24 hours in climatic chamber.Using distilling extraction simultaneously
It follows the example of, 350ml distilled water is added, takes 30ml methylene chloride extractant, extraction time 2h, 60 DEG C of bath temperature.Extract liquor is dry
It is dry overnight after, taken out from reach in freezer, balance is to importing sample concentration bottle after room temperature.Open Rotary Evaporators power switch, setting
Bath temperature is 40 DEG C, and control power switch is opened when water temperature is raised to 40 DEG C and is preheated several minutes.Pressure value is set as
560mpar, rotation speed are set as between 60r/min-65r/min, are opened condensed water and are started to be concentrated.Each sample accurate quantitative analysis
It to 1ml, is fitted into sample bottle, to GC/MS instrument analysis detection.
Testing result is as shown in table 3.
Table 1
(1, single index full marks be 10 points, concentration and strength are bigger, and score is higher, other indexs then get over by qualitative character
Good, score is higher.2, the minimum score unit of each single index is 0.25 point.3, concentration and strength belong to style and features, do not receive
Enter the calculating of total score.Total score=10X is (more than the aroma quality × miscellaneous gas of 20%+ perfume quantity × 35%+ × 20%+ irritation × 10%+
Taste × 15%))
The piece cigarette that piece cigarette low temperature redrying of the invention is handled it can be seen from the data of above-mentioned table 1 is in suction strength
Sensory evaluating smoking's index score on head, fragrance quality and quantity is higher than comparative example, it is seen that true using freezing of the invention and low temperature
The dry piece cigarette that is dried of sky can be good at protecting the flavor matter of raw tobacco material relative to traditional piece cigarette drying, so that
Redried has clear improvement in terms of sensory quality indicator perfume quantity, aroma quality.
Table 2
(1, single index full marks be 10 points, concentration and strength are bigger, and score is higher, other indexs then get over by qualitative character
Good, score is higher.2, the minimum score unit of each single index is 0.25 point.3, concentration and strength belong to style and features, do not receive
Enter the calculating of total score.Total score=10X is (more than the aroma quality × miscellaneous gas of 20%+ perfume quantity × 35%+ × 20%+ irritation × 10%+
Taste × 15%))
Table 2 is the suction sensory evaluation after related redried redrying after 18 months (by 1 year and a half alcoholization), from
The data of table 2 can be seen that low temperature redrying of the invention keeps the bioenzyme activity of tobacco leaf surface or inside well, so that after
Supervention ferment is more abundant, thus redried of the invention by alcoholization after flue gas strength and concentration be obviously improved.
Table 3
Table 3 is related aroma component content GC-MS testing result in redried, can be seen that this from the data of table 3
Scoring of the redried that the multiple roasting method of invention obtains not only in sensory evaluation is higher than comparative example, quantitative fragrance at
Point testing result also shows that same advantage, the content of neophytadiene have 40 or so raising, and Megastigmatrienone content mentions
Up to 80%~200%, dihydroactinidiolide content substantially corresponds to 2 times of traditional treatment method, furfural, furfuryl alcohol, solanone
Raising with the content of norsolandione is also quite significant.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of cigarette low temperature multiple roasting method, which comprises the steps of:
S1. the moisture in material piece cigarette freezing stage: is frozen into solid-state；
S2. drying phase under vacuum: the piece cigarette freezed in S1 is dried in vacuo, and realizes the removing of piece cigarette moisture；
S3. rise again the damping stage: vacuum drying cigarette in S2 continued into air drying, realize piece cigarette rise again and damping；
Wherein the temperature of the freezing stage is -40 ~ -30 DEG C, and the drying temperature of the drying phase under vacuum is 0 ~ 20 DEG C, dry
It is 13 ~ 14% to moisture.
2. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that drying phase under vacuum drying time described in S2
For 15 ~ 25min.
3. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that the dry temperature of drying phase under vacuum described in S2
Degree is 10 ~ 20 DEG C.
4. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that the vacuum degree of drying phase under vacuum described in S2
For 0.01 ~ 0.03 Pa.
5. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that the cryogenic temperature of freezing stage described in S1
It is -40 ~ -35 DEG C.
6. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that the cooling time of freezing stage described in S1 is
20~30min。
7. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that freezing described in S1 is liquid nitrogen frozen or dry ice
Freezing.
8. piece cigarette low temperature multiple roasting method as described in claim 1, which is characterized in that the damping stage of rising again described in S3 is using often
Warm dry gas stream is 12% to the heating drying of piece cigarette, drying to piece cigarette moisture content.
9. piece cigarette low temperature multiple roasting method as claimed in claim 8, which is characterized in that the heating speed in damping stage of rising again described in S3
Degree is 0.5 ~ 1 DEG C/min.
10. a kind of redried being prepared by described cigarette low temperature multiple roasting method of any one of claim 1 ~ 9.
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Application publication date: 20190604 |