Preparation method of reconstituted tobacco with improved comfort and reconstituted tobacco

Abstract

The present invention discloses a preparation method of reconstituted tobacco with improved comfort and the reconstituted tobacco. The preparation method includes: mixing wood pulp fibers and tobacco raw materials evenly to obtain a mixture, adding chicory roots to the mixture in a separable manner, and adding acidic pectinase for fermentation extraction treatment; performing enzyme inactivation treatment on the extraction material after the fermentation extraction treatment; discarding the chicory root residues, performing solid-liquid separation treatment on other residues to obtain solid residues and an extraction solution; pulping the solid residues and making them into a base sheet; performing membrane separation treatment on the extraction solution to obtain a membrane-treated extraction solution; concentrating the membrane-treated extraction solution to obtain a concentrated solution; coating the base sheet with the concentrated solution in a dip-coating manner to obtain a wet reconstituted tobacco; and drying the wet reconstituted tobacco. The reconstituted tobacco prepared by the present invention has a better smoke concentration, better fluffiness, a more prominent tobacco aroma, less irritation, no oral stinging sensation, and the woody odor is well modified and masked.

Description

Technical Field

[0001] The present invention relates to the field of reconstituted tobacco manufacturing, and more specifically, to a method for preparing a reconstituted tobacco with improved comfort and the reconstituted tobacco. Background Art

[0002] As is well known, the advantage of reconstituted tobacco is that its physical and chemical components can be artificially regulated, and the functions of "creating aroma and flavor" of reconstituted tobacco can be realized in this process. However, while optimizing the smoking performance of reconstituted tobacco, it is also necessary to overcome the common drawbacks of reconstituted tobacco itself, such as relatively large irritation, heavy woody off-odor, and insufficient comfort.

[0003] Chicory is a plant with dual functions of medicine and food, rich in various components such as triterpenoids, sesquiterpenoids, and coumarins, and has functions such as protecting the liver, reducing lipid, protecting digestion, and lowering blood sugar. Chicory can be extracted and concentrated with organic solvents such as water or alcohol, but it is difficult to fully exert its beneficial effects when the chicory root extract is applied to reconstituted tobacco.

[0004] Therefore, how to provide a method for preparing reconstituted tobacco that can effectively improve the performance of reconstituted tobacco through the application of chicory extract has become a technical problem urgently to be solved in this field. Summary of the Invention

[0005] One object of the present invention is to provide a new technical solution for a method for preparing reconstituted tobacco that can effectively improve the performance of reconstituted tobacco through the application of chicory extract.

[0006] According to the first aspect of the present invention, there is provided a method for preparing a reconstituted tobacco with improved comfort.

[0007] The method for preparing a reconstituted tobacco with improved comfort includes the following steps:

[0008] Step (1): Mix wood pulp fibers and tobacco raw materials evenly to obtain a mixture, then add chicory roots to the mixture in a separable manner, and add acidic pectinase for fermentation extraction treatment, wherein the mass of chicory roots is 0.5%-5% of the mass of tobacco raw materials, and the mass of wood pulp fibers is 7%-10% of the mass of tobacco raw materials;

[0009] Step (2): After the fermentation extraction treatment, perform enzyme inactivation treatment on the extraction material;

[0010] Step (3): Discard the chicory root residue, and perform solid-liquid separation treatment on other residues to obtain a solid residue and an extraction liquid;

[0011] Step (4): Beat the solid residue to 35°SR-45°SR, and make it into a base sheet with a basis weight of 58g / m 2 -60g / m 2 ;

[0012] Step (5): Perform membrane separation on the extract to obtain a membrane-treated extract;

[0013] Step (6): Rotate and evaporate the membrane-treated extract within the temperature range of 60°C - 65°C until the density reaches 1.20 g / cm 3 - 1.21 g / cm 3 to obtain a concentrated solution;

[0014] Step (7): Coat the base sheet with the concentrated solution by dip coating to obtain wet reconstituted tobacco leaves;

[0015] Step (8): Dry the wet reconstituted tobacco leaves to obtain the finished product of reconstituted tobacco leaves.

[0016] Optionally, the addition amount of the acidic pectinase in the step (1) is 2‰ of the mass of the mixture.

[0017] Optionally, the conditions of the fermentation and extraction treatment in the step (1) are as follows:

[0018] A material-liquid ratio of 1:6 - 1:8, ferment and extract the mixture with water at a temperature of 45°C - 55°C for 50 min - 60 min.

[0019] Optionally, the chicory roots in the step (1) are placed in a mesh bag and then added to the mixture.

[0020] Optionally, the step (2) is specifically as follows:

[0021] After the fermentation and extraction treatment, raise the temperature of the extraction liquid to 65°C - 70°C, keep it warm for 20 min - 25 min, and perform enzyme inactivation treatment.

[0022] Optionally, the membrane separation treatment in the step (5) includes centrifugal microfiltration treatment and ultrafiltration treatment.

[0023] Optionally, the membrane material used in the centrifugal microfiltration treatment in the step (5) is alumina, the membrane pore size is 200 nm, the inlet pressure is 1 bar - 10 bar, and the outlet pressure is 1 bar - 10 bar;

[0024] The membrane material used in the ultrafiltration treatment is polyethersulfone, the membrane pore size is 20 nm, the inlet pressure is 1 bar - 10 bar, and the outlet pressure is 1 bar - 10 bar.

[0025] Optionally, the step (7) is specifically as follows:

[0026] Coat the base sheet with the concentrated solution by dip coating, and the coating rate is 40 - 42%, to obtain wet reconstituted tobacco leaves.

[0027] Optionally, the drying temperature in the step (8) is 100°C - 110°C.

[0028] According to a second aspect of the present invention, there is provided a reconstituted tobacco leaf.

[0029] The reconstituted tobacco leaf is prepared by the method for preparing a reconstituted tobacco leaf with improved comfort according to the present invention.

[0030] The reconstituted tobacco leaf prepared by the method provided by the present invention has good smoke concentration, good bulkiness, relatively prominent tobacco aroma, less irritation, no oral stinging sensation, and the woody odor is well modified and masked. Detailed Embodiments

[0031] Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation to the present invention or its application or use.

[0033] Techniques, methods, and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and equipment should be regarded as part of the specification.

[0034] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0035] The method for preparing a reconstituted tobacco leaf with improved comfort provided by the present invention includes the following steps:

[0036] Step (1): Mix wood pulp fibers and tobacco raw materials evenly to obtain a mixture, then add chicory roots to the mixture in a separable manner, and add acidic pectinase for fermentation extraction treatment, wherein the mass of chicory roots is 0.5%-5% of the mass of tobacco raw materials, and the mass of wood pulp fibers is 7%-10% of the mass of tobacco raw materials. The tobacco raw materials can be tobacco wastes such as tobacco powder and tobacco dust, or low-grade tobacco leaves.

[0037] The addition amount of acidic pectinase in step (1) can be 2‰ of the mass of the mixture.

[0038] The conditions for the fermentation extraction treatment in step (1) can be as follows:

[0039] A material-liquid ratio of 1:6-1:8, and fermenting and extracting the mixture with water at a temperature of 45°C-55°C for 50 min-60 min.

[0040] The chicory roots in step (1) are placed in a mesh bag and then added to the mixture. In specific implementation, a partition board can also be used to separate the chicory roots from other raw materials.

[0041] The wood pulp fiber may include softwood pulp and hardwood pulp.

[0042] Step (2): After the fermentation extraction treatment, perform enzyme inactivation treatment on the extract.

[0043] Step (2) can be specifically as follows:

[0044] After the fermentation extraction treatment, heat up the extract liquid to 65°C - 70°C, keep it warm for 20 min - 25 min, and perform enzyme inactivation treatment.

[0045] Step (3): Discard the chicory root residue, and perform solid-liquid separation treatment on other residues to obtain solid residue and extract liquid.

[0046] Step (4): Beat the solid residue to 35°SR - 45°SR, and make it into a base sheet with a basis weight of 58 g / m 2 -60 g / m 2 of the base sheet.

[0047] Step (5): Perform membrane separation treatment on the extract liquid to obtain membrane-treated extract liquid.

[0048] The membrane separation treatment in step (5) includes centrifugal microfiltration treatment and ultrafiltration treatment.

[0049] The membrane material used in the centrifugal microfiltration treatment in step (5) is alumina, the membrane pore size is 200 nm, the inlet pressure is 1 bar - 10 bar, and the outlet pressure is 1 bar - 10 bar.

[0050] The membrane material used in the ultrafiltration treatment is polyethersulfone, the membrane pore size is 20 nm, the inlet pressure is 1 bar - 10 bar, and the outlet pressure is 1 bar - 10 bar.

[0051] Step (6): Rotate and evaporate and concentrate the membrane-treated extract liquid within the temperature range of 60°C - 65°C until the density is 1.20 g / cm 3 -1.21 g / cm 3 , to obtain concentrated liquid.

[0052] Step (7): Coat the base sheet with the concentrated liquid by dip coating to obtain wet reconstituted tobacco leaves.

[0053] Step (7) is specifically as follows:

[0054] Coat the base sheet with the concentrated liquid by dip coating, and the coating rate is 40 - 42%, to obtain wet reconstituted tobacco leaves.

[0055] Step (8): Dry the wet reconstituted tobacco leaves to obtain the finished reconstituted tobacco leaves.

[0056] The drying temperature in step (8) can be 100°C - 110°C.

[0057] The present invention also provides a reconstituted tobacco leaf prepared by the preparation method of the reconstituted tobacco leaf with improved comfort of the present invention.

[0058] Unless otherwise specified, the experimental methods used in the following examples are all conventional methods. The materials and reagents used, unless otherwise specified, can all be obtained from commercial channels. The equipment used in the experiments, unless otherwise specified, are all well-known to those skilled in the art.

[0059] Example 1

[0060] Take 5 g of chicory root in a mesh bag, mix it with 80 g of softwood pulp fiber and 1 kg of tobacco raw material, add 2 g of acidic pectinase, and extract the raw material with tap water at a solid-liquid ratio of 1:7 and a temperature of 50°C for 60 min;

[0061] After the extraction, raise the temperature of the extraction solution to 70°C and keep it warm for 20 min for enzyme inactivation treatment;

[0062] Take out and discard the chicory root residue, and squeeze and separate the solid-liquid of the other residues;

[0063] Beat the solid residue to 40°SR and make it into a sheet base with a basis weight of 60 g / m 2 and dry it at 120°C;

[0064] Treat the extraction solution with a "centrifugal microfiltration (MF) + ultrafiltration (UF)" membrane separation process to obtain a membrane-treated extraction solution. The centrifugal microfiltration membrane material is alumina, the membrane pore size is 200 nm, the ultrafiltration membrane material is polyethersulfone, the membrane pore size is 20 nm. The operating parameters of the MF section of the "MF(200nm)+UF(20nm)" membrane separation process: the inlet pressure is 5 bar, the outlet pressure is 5 bar, and the operating parameters of the UF section: the inlet pressure is 5 bar, the outlet pressure is 5 bar;

[0065] Concentrate the membrane-treated extraction solution in a rotary evaporator to a density of 1.21 g / cm 3 ;

[0066] Coat the sheet base with the concentrated solution by dip coating (coating rate 40%) to obtain wet reconstituted tobacco leaves;

[0067] Dry the wet reconstituted tobacco leaves at 108°C to obtain the finished reconstituted tobacco leaves.

[0068] Example 2

[0069] It is only different from Example 1 in that the addition amount of chicory root is 10 g (i.e., the dosage of chicory root relative to the tobacco raw material is 1 wt%).

[0070] Example 3

[0071] It is only different from Example 1 in that the addition amount of chicory root is 50 g (i.e., the dosage of chicory root relative to the tobacco raw material is 5 wt%).

[0072] Comparative Example 1

[0073] Take 80 g of softwood pulp fiber and mix it with 1 kg of tobacco raw material, extract the raw material with tap water at a solid-liquid ratio of 1:7 and a temperature of 50 °C for 60 min;

[0074] Perform solid-liquid separation on the extraction material;

[0075] Beat the solid residue to 40° SR and form it into a sheet base with a basis weight of 60 g / m 2 and dry it at 120 °C;

[0076] Treat the extract with a "centrifugal microfiltration (MF) + ultrafiltration (UF)" membrane separation process to obtain a membrane-treated extract. The centrifugal microfiltration membrane material is alumina, the membrane pore size is 200 nm, the ultrafiltration membrane material is polyethersulfone, the membrane pore size is 20 nm, and the operating parameters of the MF section of the "MF(200 nm)+UF(20 nm)" membrane separation process are: the inlet pressure is 5 bar and the outlet pressure is 5 bar, and the operating parameters of the UF section are: the inlet pressure is 5 bar and the outlet pressure is 5 bar;

[0077] Concentrate the membrane-treated extract in a rotary evaporator at 65 °C to a density of 1.21 g / cm 3 ;

[0078] Coat the sheet base with the concentrated liquid by dip coating (coating rate 40%) to obtain wet reconstituted tobacco leaves;

[0079] Dry the wet reconstituted tobacco leaves at 108 °C to obtain the finished product of reconstituted tobacco leaves.

[0080] Comparative Example 2

[0081] It is different from Example 1 in that: chicory root is not added.

[0082] Comparative Example 3

[0083] It is only different from Example 1 in that: the addition amount of chicory root is 3 g (i.e., the dosage of chicory root relative to the tobacco raw material is 0.3 wt%).

[0084] Comparative Example 4

[0085] The difference from Example 1 is only that: the addition amount of chicory root is 55 g (i.e., the dosage of chicory root relative to the tobacco raw material is 5.5 wt%).

[0086] Comparative Example 5

[0087] Take 5 g of chicory root, add 2 g of acidic pectinase, extract the raw material with tap water at a material-liquid ratio of 1:7 and a temperature of 50 °C for 60 min. After the extraction, raise the temperature of the extraction material-liquid to 70 °C and keep it warm for 20 min for enzyme inactivation treatment. Then, squeeze and separate the solid and liquid of the chicory root extraction material-liquid to obtain the chicory root extract;

[0088] Mix 80 g of softwood pulp fibers with 1 kg of tobacco raw material, extract the raw material with tap water at a material-liquid ratio of 1:7 and a temperature of 50 °C for 60 min. After solid-liquid separation, obtain solid residues and a tobacco raw material extract. Pulp the solid residues to 40 °SR and form a sheet base with a basis weight of 60 g / m 2 and dry it at 120 °C;

[0089] Mix the chicory root extract and the tobacco raw material extract, and perform treatment using a "centrifugal microfiltration (MF) + ultrafiltration (UF)" membrane separation process to obtain a membrane-treated extract. Among them, the centrifugal microfiltration membrane material is alumina, the membrane pore size is 200 nm, the ultrafiltration membrane material is polysulfone, the membrane pore size is 20 nm, and the operating parameters of the MF section of the "MF(200 nm)+UF(20 nm)" membrane separation process: the inlet pressure is 5 bar, the outlet pressure is 5 bar, and the operating parameters of the UF section: the inlet pressure is 5 bar, the outlet pressure is 5 bar;

[0090] Concentrate the membrane-treated extract in a rotary evaporator at 65 °C to a density of 1.21 g / cm 3 ;

[0091] Coat the sheet base with the concentrated liquid by dip coating (coating rate 40%) to obtain wet reconstituted tobacco leaves;

[0092] Dry the wet reconstituted tobacco leaves at 108 °C to obtain the finished product of reconstituted tobacco leaves.

[0093] Perform sensory evaluation on Examples 1-3 and Comparative Examples 1-5, and the results are as follows:

[0094]

[0095] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A preparation method of reconstituted tobacco with improved comfort, characterized in that, It includes the following steps: Step (1): Mix wood pulp fibers and tobacco raw materials evenly to obtain a mixture, then place chicory roots in a mesh bag and add them to the mixture, and add acidic pectinase for fermentation extraction treatment. Among them, the mass of chicory roots is 0.5%-5% of the mass of tobacco raw materials, and the mass of wood pulp fibers is 7%-10% of the mass of tobacco raw materials. The conditions for fermentation extraction treatment are as follows: a material-liquid ratio of 1:6-1:8, fermenting and extracting the mixture with water at a temperature of 45°C-55°C for 50 min-60 min; Step (2): After the fermentation extraction treatment, perform enzyme inactivation treatment on the extraction material; Step (3): Discard the chicory root residues, and perform solid-liquid separation treatment on other residues to obtain solid residues and an extract; Step (4): Beat the solid residue to 35°SR - 45°SR, and make a sheet base with a basis weight of 58 g / m 2 - 60 g / m 2 ; Step (5): Perform membrane separation treatment on the extract to obtain a membrane-treated extract. The membrane separation treatment includes centrifugal microfiltration treatment and ultrafiltration treatment. Among them, the membrane material used for centrifugal microfiltration treatment is alumina, the membrane pore size is 200 nm, the inlet pressure is 1 bar-10 bar, and the outlet pressure is 1 bar-10 bar; the membrane material used for ultrafiltration treatment is polyethersulfone, the membrane pore size is 20 nm, the inlet pressure is 1 bar-10 bar, and the outlet pressure is 1 bar-10 bar; Step (6): Rotate and evaporate the membrane treatment extract within the temperature range of 60°C - 65°C until the density reaches 1.20 g / cm 3 - 1.21 g / cm 3 , obtaining a concentrated solution; Step (7): Coat the base sheet with the concentrated solution by dip coating to obtain wet reconstituted tobacco leaves; Step (8): Dry the wet reconstituted tobacco leaves to obtain the finished product of reconstituted tobacco leaves.

2. The preparation method of the reconstituted tobacco with improved comfort according to claim 1, wherein, In the said step (1), the addition amount of acidic pectinase is 2‰ of the mass of the mixture.

3. The preparation method of the reconstituted tobacco with improved comfort according to claim 1, characterized in that, The said step (2) is specifically as follows: After the fermentation extraction treatment, raise the temperature of the extraction material to 65°C-70°C, keep it warm for 20 min-25 min, and perform enzyme inactivation treatment.

4. The preparation method of the reconstituted tobacco with improved comfort according to claim 1, characterized in that, The said step (7) is specifically as follows: Coat the base sheet with the concentrated solution by dip coating, and the coating rate is 40-42% to obtain wet reconstituted tobacco leaves.

5. The preparation method of the reconstituted tobacco with improved comfort according to claim 1, characterized in that, The drying temperature in the said step (8) is 100°C-110°C.

6. A reconstituted tobacco leaf, characterized in that, Prepared by the method for preparing reconstituted tobacco leaves with improved comfort according to any one of claims 1 to 5.

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