CN114847511B - Method for preparing stem slices, cut stems and cut tobacco composition and application - Google Patents
Method for preparing stem slices, cut stems and cut tobacco composition and application Download PDFInfo
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- CN114847511B CN114847511B CN202210628807.4A CN202210628807A CN114847511B CN 114847511 B CN114847511 B CN 114847511B CN 202210628807 A CN202210628807 A CN 202210628807A CN 114847511 B CN114847511 B CN 114847511B
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
- A24B5/16—Other treatment of stems or ribs, e.g. bending, chopping, incising
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- 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
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
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- 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
- A24B3/10—Roasting or cooling tobacco
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- 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
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
- A24B5/06—Stripping tobacco; Treatment of stems or ribs by stripping leaf-parts from the stem
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
- A24B5/08—Stripping tobacco; Treatment of stems or ribs by cutting-off, shaving off, pressing flat the thick parts of stems or ribs
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
- A24B5/14—Flattening machines for leaves or stems
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B9/00—Control of the moisture content of tobacco products, e.g. cigars, cigarettes, pipe tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/002—Cigars; Cigarettes with additives, e.g. for flavouring
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/20—Cigarettes specially adapted for simulated smoking devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention belongs to the field of tobacco processing, and particularly relates to a method for preparing stem slices, which comprises the following steps: screening the tobacco stems with separated leaves and stems to obtain the tobacco stems with the length not less than 10mm and the radius of 1-5 mm; the tobacco stems are subjected to moisture regaining treatment to obtain tobacco stems with the moisture content of 22-28% by weight; after the tobacco leaves are stored for not more than 2 hours, stem steaming treatment is carried out to obtain tobacco stems with the moisture content of 25-30 percent; then pressing the stems to obtain stem slices with the thickness of 0.7-1.8 mm; and (5) carrying out two-stage redrying treatment on the stem slices. The invention also relates to the prepared stem slice, stem shred and tobacco shred composition and application. The method can improve the moisture content uniformity and the baking penetration rate of the stem slices, improve the color uniformity of the stem slices, reduce mildew, improve the quality of the stem slices, reduce the crushing rate of the pressed stems, save raw materials and reduce energy consumption.
Description
Technical Field
The invention belongs to the field of tobacco processing, and particularly relates to a method for preparing stem slices, and also relates to the prepared stem slices, stem shreds, tobacco shred compositions and applications thereof.
Background
The existing stem chip processing technology generally comprises the following steps: separating leaves and stems, redrying, screening, storing, washing the stems with water, humidifying, tabletting and packaging. However, the above-described conventional technique has the following problems:
1) The color of the processed stem slices is uneven, the problem of local mildew exists, and the quality of the stem slices is poor;
2) The crushing rate in the tabletting process is high, and the raw material utilization rate is low;
3) The process has high energy consumption and high cost.
Therefore, there is a need for a method for preparing stem chips to solve the above problems or drawbacks exposed by the prior art.
Disclosure of Invention
The inventor creatively discovers that the existing process for preparing the stem slices has the problems of uneven color depth, partial mildew, poor quality, large crushing rate of tabletting, high energy consumption cost and the like, and accordingly, the inventor provides a method for preparing the stem slices, which can improve the water content uniformity and the baking penetration rate of the stem slice product, improve the color uniformity of the stem slice product, reduce mildew, improve the quality of the stem slice product, reduce the crushing rate of pressing the stem, save raw materials and reduce the energy consumption of the process. On the basis, the inventor of the invention also provides the prepared stem slice, stem shred and tobacco shred composition and application.
To achieve the above object, a first aspect of the present invention provides a method for producing a stem chip, comprising the steps of:
(1) Screening the tobacco stems with separated leaves and stems to obtain tobacco stems with the length not less than 10mm (preferably not less than 15mm, more preferably not less than 20 mm) and the radius of 1-5 mm (preferably 1.5-4.5 mm, more preferably 2.5-3.5 mm); preferably, the moisture content of the tobacco stems after the leaf stems are separated is 10% -20% (preferably 12% -18%, more preferably 14% -18%);
(2) The tobacco stems obtained in the step (1) are subjected to moisture regain treatment, and tobacco stems with the moisture content of 22% -28% (preferably 25% -27%) by weight are obtained;
(3) Storing the stems from step (2) for no more than 2 hours, preferably 0.5 to 2 hours, for example 1 hour;
(4) Steaming the tobacco stems obtained in the step (3) to obtain tobacco stems with the moisture content of 25% -30% (preferably 26% -28%) by weight;
(5) Pressing the tobacco stems obtained in the step (4) to obtain stem slices with the thickness of 0.7-1.8 mm (preferably 1-1.5 mm, more preferably 1.1-1.3 mm);
(6) Carrying out two-stage redrying treatment on the stem slices to obtain the stem slices; wherein the temperature of the redrying treatment in the first stage is 75-84 ℃ (preferably 78-82 ℃, more preferably 80 ℃) and the time is 1-10 minutes (preferably 1-5 minutes, more preferably 3.5 minutes), and the temperature of the redrying treatment in the second stage is 85-94 ℃ (preferably 86-90 ℃, more preferably 88 ℃) and the time is 1-10 minutes (preferably 1-5 minutes, more preferably 3 minutes, 4 minutes).
In some embodiments of the first aspect of the present invention, in step (2), the temperature of the conditioning treatment is from 55 ℃ to 75 ℃, preferably from 60 ℃ to 70 ℃, more preferably 65 ℃.
In some embodiments of the first aspect of the present invention, the amount of steam applied per 100kg of tobacco stems during the conditioning treatment is 1 to 5kg, preferably 1 to 4kg, more preferably 2kg, 3kg.
In some embodiments of the first aspect of the invention, the tobacco stems are fed at a flow rate of 2500 to 3500kg/h, preferably 2800 to 3300kg/h, for example 3000kg/h, during the conditioning treatment.
In some embodiments of the first aspect of the present invention, between steps (3) and (4), further comprising step (4'): the stored tobacco stems are screened to obtain tobacco stems with the length not less than 10mm (preferably not less than 15mm, more preferably not less than 20 mm) and the radius of 0.5-5.5 mm (preferably 1-5 mm, more preferably 2.5-3.5 mm) for stem steaming treatment.
In some embodiments of the first aspect of the invention, in step (4), the temperature of the stem steaming treatment is from 80 ℃ to 120 ℃, preferably from 90 ℃ to 110 ℃, for example 100 ℃.
In some embodiments of the first aspect of the present invention, in step (4), a spiral stem steaming machine is used for stem steaming treatment; preferably, the core vapor pressure is from 0.05 to 0.5MPa (more preferably from 0.1 to 0.4MPa, for example 0.2 MPa); preferably, the jacket vapor pressure is from 0.05 to 0.4MPa (more preferably from 0.05 to 0.3MPa, for example 0.1 MPa).
In some embodiments of the first aspect of the invention, the method further comprises one or more of the following:
1) The temperature of the tobacco stems obtained in the step (2) is 45-70 ℃, preferably 50-65 ℃, more preferably 57-63 ℃;
2) In the step (2), the conditioning treatment is roller conditioning treatment;
3) In the step (2), the conditioning treatment is carried out by a roller conditioning machine;
4) In the step (2), the water adding amount is 10-20L, preferably 15L, relative to each 100kg of tobacco stems during the moisture regaining treatment;
5) In step (3), the stored temperature is 15 ℃ -35 ℃ (preferably 20 ℃ -30 ℃), and the stored relative humidity is 30% -80% (preferably 40% -70%); the method comprises the steps of carrying out a first treatment on the surface of the
6) In the step (3), tobacco stems are uniformly distributed and then stored;
7) The temperature of the tobacco stems obtained in the step (4) is 45-90 ℃, preferably 60-80 ℃, more preferably 60-70 ℃;
8) In the step (5), the stem is pressed by a stem pressing device, and the press roll gap of the stem pressing device is 0.3-1.2 mm, preferably 0.5-1.0 mm, such as 0.5mm, 0.8mm and 1mm;
9) The moisture content of the tobacco stems obtained in the step (6) is 7-13.5%, preferably 10-13%, more preferably 11.5-12.5%;
10 The method further comprises: performing (winnowing) impurity removal on the redried stem slices, and then packaging;
11 The tobacco stems are tobacco stems produced in one province or a mixture of tobacco stems in several provinces in Fujian, yunnan and Guizhou;
12 The method further comprises: drying the waste materials screened in the steps (1) and (4'), sieving again, and classifying and packaging.
In a second aspect, the invention provides a stem chip made by the method of the first aspect of the invention.
In a third aspect, the present invention provides cut stems, made from the stem chips made by the method of the first aspect of the invention or the stem chips of the second aspect of the invention.
In a fourth aspect, the present invention provides a cut filler composition comprising cut stems according to the third aspect of the present invention.
In a fifth aspect, the present invention provides the use of a cut stem according to the second aspect, a cut stem according to the third aspect or a cut filler composition according to the fourth aspect in a tobacco product.
In some embodiments of the fifth aspect of the invention, the tobacco product is selected from the group consisting of cigarettes and heated non-combustible tobacco products.
In the invention, the separation of the tobacco leaves and the tobacco stems refers to the separation of the tobacco leaves and the tobacco stems, belongs to the conventional operation of processing the tobacco stems, and is generally implemented by adopting threshing equipment.
In the present invention, the screening may be performed by existing screening equipment, such as a screening machine.
In the present invention, normal temperature generally means a temperature of 15℃to 25℃and normal pressure generally means a standard atmospheric pressure.
The invention has the beneficial effects that:
the method can improve the moisture content uniformity and the baking penetration rate of the stem slice products, improve the color uniformity of the stem slice products, reduce mildew, improve the quality of the stem slice products, reduce the crushing rate of pressed stems, save raw materials and reduce the process energy consumption.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a flow chart of the method of preparing stem chips according to the present invention.
Detailed Description
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying examples, in which it is shown, however, that the examples are shown, and in which the invention is practiced. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the method for preparing the stem chip comprises the following steps:
(1) The tobacco stems are middle tobacco stems produced from Fujian, the tobacco stems separated by the tobacco stems are produced and provided by Longshan Jin Shefu baking Limited liability company, and the weight content of the moisture is 16.0+/-2.0%; screening the tobacco stems separated from the leaf stems for the first time to screen out stem heads, thin stems, short stems and the like to obtain long stems with the length of more than 20mm and the radius of 3.0+/-0.5 mm;
(2) Conveying the long stems into a drum-type damping machine through a quantitative feeding device at a flow rate of 3000kg/h for damping and heating, wherein the temperature of hot air is 65 ℃, the water adding proportion is 15L/100kg of tobacco stems, the steam applying proportion is 2.6kg/100kg of tobacco stems, and obtaining tobacco stems with a temperature of 60+/-3 ℃ and a moisture weight content of 26.0+/-1.0%;
(3) Uniformly stacking the tobacco stems subjected to moisture regain and temperature rise in an open container, storing for 1 hour under the conditions of 20-30 ℃ and 40-70% of relative humidity, and discharging;
(4) Screening the stored tobacco stems for the second time to screen out the fine stems and broken leaves to obtain tobacco stems with the length of more than 20mm and the radius of 3.0+/-0.5 mm;
(5) Steaming the screened tobacco stems by a spiral stem steaming machine, wherein the core steam pressure is 0.2MPa, the jacket steam pressure is 0.1MPa, the temperature is 100 ℃, and the tobacco stems with the temperature of 65+/-5 ℃ and the moisture content of 27.0+/-1.0% are obtained;
(6) Pressing the tobacco stems obtained in the step (5) by a stem pressing machine, wherein the press roll gap is 0.8mm, and obtaining stem slices with the thickness of 1.2+/-0.1 mm and the moisture content of 27.0+/-1.0%;
(7) And (3) redrying the stem slices in two stages, wherein the temperature of the redrying in the first stage is 80 ℃ for 3.5min, the temperature of the redrying in the second stage is 88 ℃ for 3min, and the stem slices with the moisture content of 12.0+/-0.5% are obtained.
(8) Removing sundries such as broken pieces in the redried stem slices by adopting winnowing equipment, and packaging the finished product.
Drying the short stems, the stem heads, the fine stems, the broken leaves and the like which are screened in the step (1) and the step (4), further screening, and then classifying and packaging.
Example 2
The tobacco stems are the tobacco stems produced from the upper part of Yunnan, the tobacco stems separated by the tobacco stems are produced and provided by a Yunnan kylin redrying factory, and the method for preparing the stem slices is the same as in example 1.
Example 3
The tobacco stems are lower tobacco stems produced in Guizhou, the tobacco stems separated from the tobacco stems are produced and provided by Guizhou copper kernel redrying factories, and the method for preparing the stem slices is the same as in example 1.
Comparative example 1
The tobacco stalk raw material is the same as in example 1, and the method for preparing the stalk slices comprises the following steps:
(1) Step (1) as in example 1;
(2) Feeding the long stems into a stem washing machine, and washing the long stems for 3min by using circulating hot water at about 65 ℃ to obtain tobacco stems with the temperature of 45 ℃ and the moisture content of 48.0 percent;
(3) Uniformly stacking the tobacco stems after stem washing in an open container, storing for 2-3 hours at the temperature of 20-30 ℃ and the relative humidity of 40-70%, and discharging;
(4) Step (4) as in example 1;
(5) Steaming the screened tobacco stems by a spiral stem steaming machine under the same conditions as in the step (5) of the example 1 to obtain tobacco stems with the temperature of 65+/-5 ℃ and the moisture content of 48.0 percent;
(6) Pressing the tobacco stems obtained in the step (5) to obtain stem slices with the thickness of 1.2+/-0.1 mm and the moisture content of 40.0% by weight, wherein the press roll gap is 0.8 mm;
(7) Carrying out two-stage redrying on the stem slices, wherein the conditions are the same as in the step (7) of the example 1, so as to obtain stem slices with the moisture content of 23.0%;
(8) Step (8) of example 1 is followed.
Comparative example 2
The tobacco stalk raw material is the same as in example 1, and the method for preparing the stalk slices comprises the following steps:
(1) Step (1) as in example 1;
(2) Feeding the long stems into a stem washing machine, and washing the long stems for 3min by using circulating hot water at about 65 ℃ to obtain tobacco stems with the temperature of 45 ℃ and the moisture content of 48.0 percent;
(3) Uniformly stacking the tobacco stems after stem washing in an open container, storing for 1 hour under the conditions of 20-30 ℃ and 40-70% of relative humidity, and discharging;
(4) Step (4) as in example 1;
(5) Steaming the screened tobacco stems by a spiral stem steaming machine under the same conditions as in the step (5) of the example 1 to obtain tobacco stems with the temperature of 65+/-5 ℃ and the moisture weight content of 45.0%;
(6) Pressing the tobacco stems obtained in the step (5) to obtain stem slices with the thickness of 1.2+/-0.1 mm and the moisture content of 38.0% by weight, wherein the press roll gap is 0.8 mm;
(7) Carrying out two-stage redrying on the stem slices, wherein the conditions are the same as in the step (7) of the example 1, so as to obtain stem slices with the moisture content of 20.0% by weight;
(8) Step (8) of example 1 is followed.
Comparative example 3
The tobacco stalk raw material is the same as in example 1, and the method for preparing the stalk slices comprises the following steps:
(1) - (3) steps (1) - (3) as in example 1;
(4) Steaming the stored tobacco stems by a spiral stem steaming machine, wherein the core steam pressure is 0.2MPa, the jacket steam pressure is 0.1MPa, the temperature is 100 ℃, and the tobacco stems with the temperature of 60+/-5 ℃ and the moisture content of 27.0+/-1.0% are obtained;
(5) Pressing the tobacco stems obtained in the step (4) to obtain stem slices with the thickness of 1.2+/-0.1 mm and the moisture content of 27.0+/-1.0% under the same conditions as in the step (6) of the example 1;
(6) Re-baking the stem slices in two stages under the same re-baking conditions as in the step (7) of the example 1 to obtain stem slices with the moisture content of 12.0+/-0.5% by weight;
(7) Step (8) in example 1 was repeated.
Test example 1 color difference and mildew ratio
(1) The stem pieces prepared in examples 1 to 3 and comparative examples 1 to 3 were randomly taken 30 samples each, and the color difference ΔE was detected by a color difference meter (obtained by comparing with the standard white card of the instrument itself), and the standard deviation of the color difference ΔE was calculated for all the samples of each stem piece.
(2) 100 samples of the stem pieces prepared in examples 1-3 and comparative examples 1-3 were each taken, left for 6 months at room temperature (15 ℃ -25 ℃) and relative humidity of < 75%, and visually inspected for mildew, and if mildew spots appear on the samples, the mildew samples are regarded as mildew samples, and then the proportion of the weight of the mildew samples to the total weight of the samples is calculated as mildew ratio.
The results are shown in Table 1.
TABLE 1 color difference standard deviation and mildew ratio results
| Stem slice | Standard deviation of color difference ΔE | Mildew rate |
| Example 1 | 0.52 | 0％ |
| Example 2 | 0.45 | 0％ |
| Example 3 | 0.46 | 0％ |
| Comparative example 1 | 1.0 | 86.5％ |
| Comparative example 2 | 0.96 | 93.6％ |
| Comparative example 3 | 0.60 | 0.2％ |
As is clear from Table 1, compared with the methods of comparative examples 1 to 3, the standard deviation of the color difference DeltaE of the stem pieces prepared by the method of the invention is smaller, and the mildew rate is smaller, which indicates that the stem pieces prepared by the method of the invention have better uniformity of color and are less prone to mildew. Comparative examples 1-2 the washing stems were used instead of the drum for conditioning and warming, resulting in poor color uniformity of the stem pieces produced, which were very prone to mildew. Comparative example 3 omits the second sieving, resulting in slightly poorer color uniformity and slightly increased mildew rate of the prepared stem pieces.
Test example 2 Standard deviation of moisture content and baking penetration
30 samples of the cut stems prepared in examples 1-3 and comparative examples 1-3 were randomly extracted, the water content of each sample was measured according to YCT 31-1996 'preparation of tobacco and tobacco product samples and moisture measurement oven method', and the standard deviation of the water content of each cut stem was calculated;
and according to the result of the water content of the sample, judging that the cut stem is semi-baked when the water content is more than 13.0%, otherwise judging that the cut stem is baked, and calculating the ratio of the baked samples in all the samples of each cut stem, namely the baked rate.
The results are shown in Table 2.
TABLE 2 Standard deviation of moisture content and results of baking penetration
As is clear from Table 2, the standard deviation of the moisture content of the stem pieces produced by the method of the present invention was smaller and the baking penetration rate was higher, compared with the stem pieces produced by the methods of comparative examples 1 to 3, indicating that the stem pieces produced by the method of the present invention had better moisture uniformity and were easier to bake. In the method of comparative examples 1-2, the washing stems are used for replacing the roller for moisture regaining and temperature rising, so that the water content uniformity of the prepared stem slices is poor, and the stem slices cannot be thoroughly baked.
Test example 3 measurement of the crushing rate of pressed Stem
The crushing rate in the stem pressing step of examples 1 to 3 and comparative examples 1 to 3 was calculated according to the following formula;
the results of the crushing rate (%) =100% x the weight of the sundries removed by air separation/the weight of the stem chip finished product are shown in table 3.
TABLE 3 results of crushing rate of pressed stems
| Stem slice | Crushing ratio (%) |
| Example 1 | 2.3 |
| Example 2 | 2.7 |
| Example 3 | 3.0 |
| Comparative example 1 | 4.5 |
| Comparative example 2 | 5.1 |
| Comparative example 3 | 2.5 |
As can be seen from Table 3, the method of the present invention has a lower crushing rate of the pressed stems than the methods of comparative examples 1 to 3, indicating that the method of the present invention saves tobacco raw materials and reduces process energy consumption.
In conclusion, the stem slices prepared by the method have good color uniformity, are not easy to mildew, have good water content uniformity, are easy to bake thoroughly, have lower stem pressing and crushing rate, and save raw materials and energy consumption.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A method of preparing a stem chip comprising the steps of:
(1) Screening the tobacco stems with separated leaves and stems to obtain the tobacco stems with the length not less than 10mm and the radius of 1-5 mm;
(2) The tobacco stems obtained in the step (1) are subjected to moisture regain treatment, and the tobacco stems with the moisture content of 22% -28% are obtained; wherein the conditioning treatment is carried out by a roller conditioning machine; the temperature of the conditioning treatment is 55-75 ℃; during the conditioning treatment, the steam application amount is 1-5kg relative to each 100kg of tobacco stems, the water adding amount is 10-20L relative to each 100kg of tobacco stems, and the feeding flow rate of the tobacco stems is 2500-3500 kg/h;
(3) Storing the tobacco stems obtained in the step (2) for 1 hour;
(4') screening the stored tobacco stems to obtain tobacco stems with the length not less than 10mm and the radius of 0.5-5.5 mm;
(4) Steaming the tobacco stems obtained in the step (4') to obtain tobacco stems with 25-30% of water content;
(5) Pressing the tobacco stems obtained in the step (4) to obtain stem slices with the thickness of 0.7-1.8 mm;
(6) Carrying out two-stage redrying treatment on the stem slices; wherein the temperature of the redrying treatment in the first stage is 75-84 ℃ for 1-10 minutes, the temperature of the redrying treatment in the second stage is 85-94 ℃ for 1-10 minutes.
2. The method of claim 1, wherein in the step (4), the stem steaming treatment is performed at a temperature of 80-120 ℃.
3. The method of claim 1, wherein in the step (4), the stem steaming treatment is performed using a spiral stem steamer.
4. A process according to claim 3, wherein in step (4) the core vapour pressure is from 0.05 to 0.5MPa.
5. The process according to claim 3, wherein in the step (4), the jacket vapor pressure is 0.05 to 0.4MPa.
6. The method according to any one of claims 1 to 5, characterized by one or more of the following:
1) The temperature of the tobacco stems obtained in the step (2) is 45-70 ℃;
2) In the step (3), the storage temperature is 15-35 ℃, and the storage relative humidity is 30-80%;
3) In the step (3), tobacco stems are uniformly distributed and then stored;
4) The temperature of the tobacco stems obtained in the step (4) is 45-90 ℃;
5) In the step (5), a stem pressing device is adopted to press the stems, and the press roll gap of the stem pressing device is 0.3-1.2 mm;
6) The moisture content of the tobacco stems obtained in the step (6) is 7% -13.5%;
7) The method further comprises the steps of: removing impurities from the redried stem slices, and packaging;
8) The tobacco stems are tobacco stems produced from one province in Fujian, yunnan and Guizhou or the mixture of tobacco stems of several provinces;
9) The method further comprises the steps of: drying the waste materials screened in the steps (1) and (4'), sieving again, and classifying and packaging.
7. A stem chip produced by the method of any one of claims 1 to 6.
8. Cut stems produced from the stem chips produced by the method of any one of claims 1 to 6 or the stem chips of claim 7.
9. A cut tobacco composition comprising cut stems of claim 8.
10. Use of the cut stem of claim 7, the cut stem of claim 8 or the cut tobacco composition of claim 9 in a tobacco product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| WO2009076699A1 (en) * | 2007-12-19 | 2009-06-25 | British American Tobacco Australasia Limited | A process for producing tobacco products |
| CN105077563A (en) * | 2015-08-28 | 2015-11-25 | 安徽中烟工业有限责任公司 | Processing method for pre-pressing threshed and re-dried tobacco stems and producing cut stems |
| CN106108098A (en) * | 2016-08-19 | 2016-11-16 | 云南中烟新材料科技有限公司 | A kind of thin short cabo expansion restructuring throwing processing technique |
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| CN102860577A (en) * | 2012-09-24 | 2013-01-09 | 云南瑞升烟草技术（集团）有限公司 | Method for processing tobacco stem shreds |
| CN102920004A (en) * | 2012-11-23 | 2013-02-13 | 中国烟草总公司郑州烟草研究院 | Technique for preparing tobacco stalks into stalk slices after threshing |
| CN102972856A (en) * | 2012-12-19 | 2013-03-20 | 云南瑞升烟草技术（集团）有限公司 | Novel production process for cut tobacco stems |
| CN104382221B (en) * | 2014-10-09 | 2015-12-02 | 红云红河烟草(集团)有限责任公司 | A kind of offal is processed into the method for stem |
| GB201811370D0 (en) * | 2018-07-11 | 2018-08-29 | British American Tobacco Investments Ltd | Methods of treating cut stem tobacco material |
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| WO2009076699A1 (en) * | 2007-12-19 | 2009-06-25 | British American Tobacco Australasia Limited | A process for producing tobacco products |
| CN105077563A (en) * | 2015-08-28 | 2015-11-25 | 安徽中烟工业有限责任公司 | Processing method for pre-pressing threshed and re-dried tobacco stems and producing cut stems |
| CN106108098A (en) * | 2016-08-19 | 2016-11-16 | 云南中烟新材料科技有限公司 | A kind of thin short cabo expansion restructuring throwing processing technique |
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| 烟用梗丝加工工艺研究进展;李晓;纪晓楠;姚二民;张俊岭;李少平;;贵州农业科学(第08期);第182-186页 * |
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