CN115777979A - Reconstituted tobacco and preparation method thereof - Google Patents
Reconstituted tobacco and preparation method thereof Download PDFInfo
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- CN115777979A CN115777979A CN202211413499.XA CN202211413499A CN115777979A CN 115777979 A CN115777979 A CN 115777979A CN 202211413499 A CN202211413499 A CN 202211413499A CN 115777979 A CN115777979 A CN 115777979A
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- reconstituted tobacco
- coating
- tobacco
- reconstituted
- parts
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 222
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- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims description 9
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Images
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- Manufacture Of Tobacco Products (AREA)
Abstract
The application discloses a preparation method of reconstituted tobacco, which comprises the following steps: preparing a coating liquid, wherein the coating liquid comprises a hydrophobic agent, an adhesive, a dispersing agent and water; obtaining a reconstituted tobacco body; and sequentially coating the coating liquid on the upper surface and the lower surface of the reconstituted tobacco body and drying to form coating layers on two sides. The application also provides a reconstituted tobacco. According to the reconstituted tobacco and the preparation method thereof provided by the invention, the coating layer is prepared on the surface of the reconstituted tobacco body as the upper epidermis and the lower epidermis through the epidermis reconstitution technology, the reconstituted tobacco is prevented from excessively absorbing or dissipating moisture through the barrier effect of the upper epidermis and the lower epidermis, the stability of the moisture is kept, the problems of poor processing resistance, sensory quality fluctuation and short shelf life of the storage period caused by poor hygroscopicity are solved, the prepared reconstituted tobacco has moderate hygroscopicity, and the hygroscopicity and the moisture stability of the reconstituted tobacco are improved.
Description
Technical Field
The application relates to the technical field of tobacco products, in particular to reconstituted tobacco and a preparation method thereof.
Background
Reconstituted tobacco (Reconstituted tobaccos) is a main cigarette core material used for heating cigarettes and is also a core raw material of the heating cigarettes. The heating cigarette is one of the important forms of the novel tobacco products, and is different from the traditional cigarette which generates the fragrant substances in a tobacco combustion mode, the heating cigarette utilizes an external heat source for heating instead of ignition, so that the cigarette core section generates aerosol containing nicotine and characteristic flavor substances for smoking.
The production process of the reconstituted tobacco mainly comprises a rolling method, a thick pulp method, a paper-making method, a dry method and the like. The tobacco leaf remaking by the rolling method is that tobacco materials such as tobacco stems, tobacco powder, tobacco leaf fragments and the like are crushed and then mixed with materials such as adhesive, reinforcing agent, humectant, water and the like according to a certain proportion and stirred uniformly to form loose granular shapes, then the loose granular shapes are rolled by a rolling machine to form sheets for drying, and finally the sheets are cut into remaking tobacco leaf shreds by a shredder. The reconstituted tobacco prepared by the thick paste method is prepared by the steps of crushing tobacco materials, mixing the crushed tobacco materials into an aqueous solution with an adhesive, a reinforcing agent, a humectant and water, uniformly stirring the mixture to form a paste, uniformly spreading the paste on a stainless steel belt, drying the paste, and stripping the paste to form the reconstituted tobacco. The tobacco leaf remaking by paper-making method is that the tobacco stalk, fragment and tobacco powder are soaked and extracted by hot water and are solid-liquid separated, the obtained extracting solution is blended into coating liquid after vacuum concentration, the residual solid slag is made into sheet base by pulping and paper making on a specific paper machine, then the coating liquid is evenly coated on the surface of the sheet base, and the reconstituted tobacco leaf is obtained by drying. The dry reconstituted tobacco process takes airflow as a fiber carrier and produces reconstituted tobacco through the processes of air sedimentation, hot rolling forming, spraying drying and the like.
Hygroscopicity is one of the basic physical properties of reconstituted tobacco. In the production process of the reconstituted tobacco, a large amount of polyhydric alcohols (glycerol, propylene glycol and the like) are required to be introduced to serve as a smoke agent, and the moisture absorption performance of the reconstituted tobacco is obviously different from that of the conventional tobacco shreds due to the polyhydric alcohols containing hydrophilic hydroxyl structures. The moisture absorption performance of the reconstituted tobacco is directly related to the working condition regulation and control of the wet heat treatment unit in the production process, the physical and mechanical properties of the formed sheet base, the product quality of the heated cigarettes, the storage and transportation in special environments, the storage under high-temperature and high-humidity conditions, the shelf-life storage and the smoking feeling of consumers.
At present, the moisture absorption/desorption performance of the surface of the reconstituted tobacco is unstable, and the phenomenon of moisture absorption or desorption is easy to generate along with the change of the environmental temperature and humidity, so that the adverse effects are generated on the shred making process of the heated cigarette, the processing quality of the rolling process, the fluctuation of the moisture content in the storage process of the cigarette, the sensory quality stability of the heated cigarette and the like. The moisture absorption performance of the reconstituted tobacco is improved, and the problems of poor on-machine adaptability, sensory quality fluctuation and the like caused by moisture absorption are important problems to be solved urgently in the field of reconstituted tobacco.
Disclosure of Invention
In order to solve the above technical problems, a first object of the present invention is to provide a method for preparing reconstituted tobacco; the second purpose of the invention is to provide the reconstituted tobacco prepared by the preparation method; according to the reconstituted tobacco and the preparation method thereof, the coating layers are prepared on the surface of the reconstituted tobacco body as the upper epidermis and the lower epidermis through the epidermis reconstitution technology, the reconstituted tobacco is prevented from excessively absorbing water or losing water through the barrier effect of the upper epidermis and the lower epidermis, the stability of water is kept, the problems of poor processing resistance, fluctuation of sensory quality and short shelf life of a storage period caused by poor hygroscopicity are solved, the prepared reconstituted tobacco has moderate hygroscopicity, and the hygroscopicity and the water stability of the reconstituted tobacco are improved.
The technical scheme provided by the invention is as follows:
a preparation method of reconstituted tobacco comprises the following steps:
preparing a coating liquid, wherein the coating liquid comprises a hydrophobic agent, an adhesive, a dispersing agent and water;
obtaining a reconstituted tobacco body;
and sequentially coating the coating liquid on the upper surface and the lower surface of the reconstituted tobacco body and drying to form coating layers on two sides.
Preferably, the coating liquid has a solid content of 1% to 20% and a viscosity of 50 to 2000 mPas.
Preferably, the coating liquid further comprises any one or more of tobacco extract, food additive and essence for tobacco.
Preferably, the coating liquid comprises the following raw materials in parts by weight:
1-15 parts of a hydrophobing agent, 1-10 parts of an adhesive, 1-3 parts of a dispersing agent, 1-10 parts of a tobacco extract, 1-5 parts of a food additive, 1-3 parts of a tobacco essence and 70-95 parts of water.
Preferably, the hydrophobic agent is one or more of paraffin, rice bran wax, hard mineral wax, shellac, sunflower wax, candelilla wax and carnauba wax;
the adhesive is one or more of carrageenan, xanthan gum, guar gum, carob bean gum, locust bean gum, pectin, sodium carboxymethylcellulose, methylcellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, cationic starch, and alginate;
the dispersant is one or more of polyethylene glycol, sodium carboxymethyl starch, sodium polyacrylate, hydroxyethyl starch, gum arabic, and sodium lignosulfonate.
Preferably, the tobacco extract is one or more of flue-cured tobacco extract, sun-cured tobacco extract, burley tobacco extract and aromatic tobacco extract;
the food additive is one or more of glyceryl monostearate, glyceryl distearate, and glyceryl tristearate;
the tobacco essence is two or more of vanillin, menthol, geraniol and citronellol.
Preferably, the basis weight of the reconstituted tobacco body is 40-200g/m 2 And the mass fraction of the smoke agent in the reconstituted tobacco body is 0-30%.
Preferably, the reconstituted tobacco body is prepared by one or more processes of a rolling method, a thick pulp method, a paper-making method and a dry method.
Preferably, the coating liquid is coated on the surface of the reconstituted tobacco body by one or more processes of roll coating, size press, metering rod type film transfer coating, dip coating, spray coating, curtain coating, multilayer slide coating, slit coating and extrusion coating.
Preferably, in the reconstituted tobacco, the mass fraction of the coating layer is 1-10%, and the mass fraction of the reconstituted tobacco body is 90-99%.
Preferably, the coating rate is 1-15% and the coating amount is 1-15g/m 2 。
Preferably, the static contact angle of the coating layer is 70-120 °.
Preferably, the drying is carried out by hot air, and the temperature of the hot air is 80-110 ℃.
The reconstituted tobacco prepared by the preparation method of any one of the above.
The application provides a preparation method of reconstituted tobacco, which comprises the following steps: preparing a coating liquid, wherein the coating liquid comprises a hydrophobic agent, an adhesive, a dispersing agent and water; obtaining a reconstituted tobacco body; and sequentially coating the coating liquid on the upper surface and the lower surface of the reconstituted tobacco body and drying to form coating layers on two sides. According to the preparation method of the reconstituted tobacco, the coating liquid is sequentially transferred to the upper surface and the lower surface of the reconstituted tobacco body, the reconstituted tobacco is dried to form the coating layer, namely the reconstituted tobacco consisting of the upper epidermis, the lower epidermis and the reconstituted tobacco body positioned between the upper epidermis and the lower epidermis is formed, the upper epidermis and the lower epidermis are tightly combined with the reconstituted tobacco body through the coating and drying process, the moisture absorption problem of the existing reconstituted tobacco is effectively solved by utilizing the hydrophobic effect of the separation barriers of the upper epidermis and the lower epidermis, and the reconstituted tobacco meeting the moisture absorption/moisture release performance and sensory quality requirements of cigarettes is formed.
In the application, the steps of obtaining the reconstituted tobacco body or preparing the coating liquid have no sequential requirements. In the application, the reconstituted tobacco body can be prepared by oneself or purchased externally.
The existing reconstituted tobacco varieties comprise a rolling method, a thick pulp method, a paper-making method, a dry method and reconstituted tobacco obtained by combining or extending the methods, the skin problem of the reconstituted tobacco is not involved in the existing manufacturing method or process of the reconstituted tobacco, only the reconstituted tobacco body which is equivalent to mesophyll tissue in plant leaves is manufactured, and the reconstituted tobacco body lacks of the upper skin and the lower skin, so that a 'barrier' for preventing moisture absorption and moisture release functions is lost, the moisture absorption/moisture release performance of the reconstituted tobacco is unstable, moisture fluctuation is easily caused by the change of environmental temperature and humidity in the cigarette processing process, the processing resistance is poor, moisture absorption, adhesion and mildew are caused, and the sensory quality of cigarettes is seriously influenced.
At present, the roller pressing method, the thick pulp method, the paper making method and the dry method for heating cigarettes all contain 10-30% of smoke agents such as glycerin, propylene glycol and the like in mass fraction, the smoke agents such as the glycerin, the propylene glycol and the like have the functions of moisture retention and absorption, the moisture retention agents are directly exposed in the air after being mixed with tobacco particles, and when the environmental temperature and humidity conditions change, for example, the humidity is more than 60%, the reconstituted tobacco can absorb the moisture from the environment, which is called as moisture absorption; when the humidity is less than 40%, the reconstituted tobacco releases moisture from inside to outside, which is called desorption or dehumidification.
The existing reconstituted tobacco and the preparation method thereof have the following problems:
(1) The body part of the reconstituted tobacco leaves has no epidermal layer to protect internal tissues, and the smoke agent or the tobacco extract is directly exposed in the air to cause moisture absorption, so that the processing resistance of the reconstituted tobacco leaf in the processes of shredding, rolling and packaging is influenced.
(2) Along with the change of the environmental temperature and humidity, the reconstituted tobacco generates the phenomenon of moisture absorption or desorption, thereby causing the increase or decrease of moisture, causing the fluctuation of the sensory quality of the heated cigarettes or cigarettes and causing serious quality defects.
(3) The unstable moisture content of the reconstituted tobacco affects the storage period and shelf life of the heated cigarettes or cigarettes, and causes quality problems of mildew, adhesion, deterioration and the like.
The biological structure of plant leaf consists of epidermis, mesophyll and vein. The epidermis is the lifelong protective tissue of the leaf, and covers the surface of the leaf, and is divided into an upper epidermis and a lower epidermis. The epidermal cells consist of a silent stratum corneum and a wax layer, and the wax layer has the main function of retaining water and preventing the non-porous loss of water in plant tissues. The invention provides a bionic reconstituted tobacco based on a plant leaf structure, and provides an upper skin and a lower skin of a reconstituted tobacco body through a skin reconstitution technology, so that series problems caused by moisture absorption and absorption of the existing reconstituted tobacco are effectively solved.
Specifically, the invention has the following beneficial effects:
(1) The moisture absorption performance of the bionic reconstituted tobacco based on the plant leaf structure is greatly improved, and the bionic reconstituted tobacco shows good processing resistance in the process of shredding, charging and flavoring, rolling and forming, packaging and storing and the like.
(2) The bionic reconstituted tobacco based on the plant leaf structure, prepared by the invention, is greatly improved in sensory quality stability, the smoke concentration, the fullness and the thickness are obviously enhanced, the tobacco is thick and mellow, and the smoke irritation and the dry sensation are reduced. Compared with the existing reconstituted tobacco, the number of effective suction openings is increased from 7-8 openings to 10-12 openings, and the suction durability and the stability of aroma texture are obviously enhanced.
(3) The bionic reconstituted tobacco based on the plant leaf structure, which is prepared by the invention, is applied to cigarettes or heated cigarettes, so that the storage period and shelf life are greatly prolonged, the stability of product quality is ensured, and the experience of consumers is guaranteed.
(4) The bionic reconstituted tobacco with the regenerated epidermis provided by the invention has the advantages that the surface strength and the tensile strength are further improved, the hair and powder falling rate is reduced, and the suitability for mounting on a machine is further enhanced.
The coating liquid preferably has a solid content of 1 to 20% and a viscosity of 50 to 2000 mPas.
Preferably, the tobacco extract, the food additive and the tobacco essence are also included.
Further preferably, the coating liquid comprises the following raw materials in parts by weight: 1-15 parts of a hydrophobic agent, 1-10 parts of an adhesive, 1-3 parts of a dispersant, 1-10 parts of a tobacco extract, 1-5 parts of a food additive, 1-3 parts of a tobacco essence and 70-95 parts of water.
The hydrophobic agent, the adhesive, the dispersing agent, the tobacco extract and the food additive can be selected from one or more of various substances. The adhesive is used for bonding the components in the coating liquid and bonding the coating liquid with the reconstituted tobacco. The dispersant is used to prevent mutual aggregation between the coating liquid particles and improve the stability of the coating liquid. The tobacco extract is used for increasing the tobacco flavor of the reconstituted tobacco and improving the sensory quality evaluation. The food additive is used for endowing the reconstituted tobacco with more flavor and is added according to the requirement. The tobacco essence is selected from two or more of vanillin, menthol, geraniol and citronellol, and is used for flavoring and flavoring reconstituted tobacco to generate elegant fragrance and comfortable taste.
According to the preparation method of the reconstituted tobacco provided by the application, the body of the reconstituted tobacco can be prepared by one or more processes of the conventional method, such as a rolling method, a thick pulp method, a paper-making method and a dry method. According to the application, the problem of moisture absorption of the tobacco leaves is solved by respectively coating the coating liquid on the upper surface and the lower surface of the reconstituted tobacco body and drying the coating liquid to form the coating layer. The coating process may employ one or more of roll coating, size press, metering rod film transfer coating, dip coating, spray coating, curtain coating, multilayer slide coating, slot coating, extrusion coating. Depending on the coating process, it is possible to select whether one side is coated and dried first or both sides are coated and dried simultaneously. For example, spray coating is carried out by coating the upper surface, drying, coating the lower surface, and drying. Dip coating is coating both sides simultaneously and then drying both sides simultaneously. Can be flexibly selected according to the requirements of the actual process.
Preferably, in the reconstituted tobacco formed after drying, the coating layer accounts for 1-10% by mass, and the reconstituted tobacco body accounts for 90-99% by mass. The mass of the reconstituted tobacco body refers to the absolute dry mass of the reconstituted tobacco.
Preferably, the coating rate is 1-15%, and the coating weight is 1-15g/m 2 . After drying, the static contact angle of the coating layer is 70-120 °.
Preferably, the drying is hot air drying, wherein the hot air temperature is 80-110 ℃, the drying time is 20-40min, and the drying is carried out until the moisture of the reconstituted tobacco is 8-12%.
The ration of the reconstituted tobacco body is 40-200g/m 2 The mass fraction of the smoke agent in the reconstituted tobacco body is 0-30%, and the finished reconstituted tobacco product obtained after coating and drying is 50-210g/m in fixed quantity 2 The finished product has the smoke agent mass fraction of 0-20% and the tensile strength of more than or equal to 350N/m.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a static contact angle of a tobacco leaf reconstituted by a bionic rolling method in example 1 of the present invention;
FIG. 2 is a static contact angle of the tobacco leaves reproduced by the bionic thick paste method in embodiment 2 of the invention;
FIG. 3 is a static contact angle of the reconstituted tobacco by the biomimetic paper-making process in embodiment 3 of the present invention;
FIG. 4 is a static contact angle of a conventional reconstituted tobacco of a comparative example of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in operation as a limitation of the application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, are not essential to the technology, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
Example 1
The formula of the coating liquid is as follows: 5 parts by weight of hydrophobic agent paraffin, 2 parts by weight of adhesive carboxymethylcellulose sodium, 1 part by weight of dispersant sodium lignosulfonate, 4 parts by weight of tobacco extract flue-cured tobacco extract, 2 parts by weight of food additive glyceryl monostearate, 1 part by weight of tobacco essence vanillin and 85 parts by weight of water;
the coating liquid had a solid content of 3% and a viscosity of 450 mPas.
By rollingThe production process prepares the reconstituted tobacco body, and the ration of the prepared reconstituted tobacco body by the rolling method is 85g/m 2 The mass fraction of the smoke agent glycerol in the reconstituted tobacco body is 15%.
Spraying the prepared coating liquid on the upper surface of the reconstituted tobacco body by adopting a spray coating mode, and feeding the reconstituted tobacco body into an oven for hot air drying at 90 ℃; then spraying the coating on the lower surface of the reconstituted tobacco body, and sending the reconstituted tobacco body into an oven for hot air drying at 90 ℃. The spraying amount of each time is 2.5g/m 2 The total coating rate of the coating process is 5.5 percent, and the total coating weight is 5g/m 2 And obtaining a finished bionic reconstituted tobacco product with an upper epidermis and a lower epidermis, and controlling the moisture content of the finished reconstituted tobacco product to be 10%. The prepared bionic reconstituted tobacco is subjected to physical property, hydrophobic property and moisture absorption property tests, and the test results are shown in table 1.
Example 2
The formula of the coating liquid is as follows: the cigarette additive comprises, by weight, 10 parts of hydrophobic agent paraffin, 1 part of adhesive carboxymethylcellulose sodium, 1 part of dispersant sodium lignosulfonate, 1 part of tobacco extract flue-cured tobacco extract, 1 part of food additive glyceryl monostearate, 1 part of cigarette essence vanillin and 85 parts of water;
the coating liquid had a solid content of 5% and a viscosity of 238 mPas.
The reconstituted tobacco body is prepared by adopting a thick paste method production process, and the quantitative amount of the prepared reconstituted tobacco body by a rolling method is 135g/m 2 The mass fraction of the smoke agent glycerol in the reconstituted tobacco body is 18%.
Spraying the prepared coating liquid on the upper surface of the reconstituted tobacco body by adopting a spray coating mode, and feeding the reconstituted tobacco body into an oven for hot air drying at 95 ℃; then spraying the coating on the lower surface of the reconstituted tobacco body, and sending the reconstituted tobacco body into an oven for hot air drying at 95 ℃. The spraying amount of each time is 4g/m 2 The total coating rate of the coating process is 5.6 percent, and the total coating weight is 8g/m 2 And obtaining a finished bionic reconstituted tobacco product with an upper epidermis and a lower epidermis, and controlling the moisture content of the finished reconstituted tobacco product to be 10%. The physical property, the hydrophobic property and the moisture absorption property of the prepared bionic reconstituted tobacco are tested, and the test results are shown in table 1.
Example 3
The formula of the coating liquid is as follows: 15 parts of hydrophobic agent paraffin, 1 part of adhesive carboxymethylcellulose sodium, 1 part of dispersant sodium lignosulfonate, 1 part of tobacco extract and flue-cured tobacco extract, 1 part of food additive glyceryl monostearate, 1 part of tobacco essence vanillin and 80 parts of water in parts by weight;
the coating liquid had a solid content of 10% and a viscosity of 856 mPas.
The reconstituted tobacco body is prepared by adopting a thick pulp method production process, and the ration of the prepared reconstituted tobacco body by a rolling method is 97g/m 2 The mass fraction of the smoke agent glycerol in the reconstituted tobacco body is 16%.
Spraying the prepared coating liquid on the upper surface of the reconstituted tobacco body by adopting a spray coating mode, and feeding the reconstituted tobacco body into an oven for hot air drying at 90 ℃; then spraying the coating on the lower surface of the reconstituted tobacco body, and sending the reconstituted tobacco body into an oven for hot air drying at 90 ℃. The spraying amount of each time is 5g/m 2 The total coating rate of the coating process is 9.3 percent, and the total coating weight is 10g/m 2 And obtaining a finished bionic reconstituted tobacco product with an upper epidermis and a lower epidermis, and controlling the moisture content of the finished reconstituted tobacco product to be 10%. The prepared bionic reconstituted tobacco is subjected to physical property, hydrophobic property and moisture absorption property tests, and the test results are shown in table 1.
The various physicochemical property test methods and criteria described in table 1 are as follows:
GB/T451.2-2002 determination of paper and paperboard basis weight;
determination of tensile strength and elongation of GB/T12914-2008 paper and paperboard;
gas chromatography for determining 1, 2-propylene glycol and glycerol in YC/T243-2008 tobacco and tobacco products
Preparation of YC/T31-1996 tobacco and tobacco product samples and moisture determination oven method
Physical and chemical performance indexes of the three bionic reconstituted tobaccos prepared in the embodiment are determined through experiments, sensory quality evaluation is carried out according to a sensory evaluation method of YC/T498-2014 reconstituted tobaccos (a papermaking method) and by referring to sensory technical requirements of GB 5606.4-2005 cigarette part 4, and compared with traditional reconstituted tobaccos prepared by the existing thick pulp method (without coating), the results are shown in table 1.
As can be seen from Table 1, compared with the conventional reconstituted tobacco, the physical properties, hydrophobic properties, moisture absorption properties and sensory quality of the bionic reconstituted tobacco of 3 examples are obviously improved. On the premise that the smoke agent content of the bionic reconstituted tobacco is higher than that of a reference sample, the static contact angles of the roller pressing method bionic reconstituted tobacco, the thick paste method bionic reconstituted tobacco and the paper-making method bionic reconstituted tobacco prepared by the skin reconstruction technology are respectively increased to 80 degrees, 90 degrees and 109 degrees from 45 degrees, which shows that the upper skin and the lower skin of the bionic reconstituted tobacco have certain hydrophobic properties.
The moisture absorption experiment further proves that the moisture absorption rate and the moisture release rate of the bionic reconstituted tobacco are lower than those of a control sample, which indicates that the moisture absorption performance of the bionic reconstituted tobacco is improved. From the perspective of sensory quality score, as a certain amount of tobacco extract is added into the upper and lower epidermis of the bionic reconstituted tobacco, and new aroma components are introduced, the sensory quality score is slightly improved. In addition, as a certain adhesive is added into the coating liquid, the tensile strength of the bionic reconstituted tobacco is also increased, which is beneficial to improving the processing resistance of the bionic reconstituted tobacco in the processes of shredding, charging and perfuming, rolling, wrapping and the like. In conclusion, compared with the traditional reconstituted tobacco, the physical property, the hydrophobic property, the moisture absorption property and the sensory quality of the bionic reconstituted tobacco are obviously improved, and the common problem of moisture absorption and absorption of the existing reconstituted tobacco is better solved.
Example 4
The same as in example 1, except that the coating formulation was: the cigarette additive comprises, by weight, 5 parts of a hydrophobic agent hard mineral wax, 2 parts of an adhesive xanthan gum, 1 part of a dispersing agent carboxymethyl starch sodium, 4 parts of a tobacco extract burley tobacco extract, 2 parts of a food additive glyceryl distearate, 1 part of a cigarette essence menthol and 85 parts of water.
Example 5
The same as in example 1, except that the coating liquid formulation was: the cigarette-like water repellent agent comprises, by weight, 5 parts of a water repellent agent candelilla wax, 2 parts of an adhesive hydroxypropyl methyl cellulose, 1 part of a dispersing agent polyethylene glycol, 4 parts of a tobacco extract sun-cured tobacco extract, 2 parts of a food additive glyceryl distearate, 1 part of a tobacco essence citronellol and 85 parts of water.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. The preparation method of the reconstituted tobacco is characterized by comprising the following steps:
preparing a coating liquid, wherein the coating liquid comprises a hydrophobic agent, an adhesive, a dispersing agent and water;
obtaining a reconstituted tobacco body;
and sequentially coating the coating liquid on the upper surface and the lower surface of the reconstituted tobacco body and drying to form coating layers on two sides.
2. The method of producing reconstituted tobacco according to claim 1, wherein the coating liquid has a solid content of 1% to 20% and a viscosity of 50 to 2000 mPa-s.
3. The method for preparing reconstituted tobacco according to claim 2, wherein the coating liquid further comprises any one or more of tobacco extract, food additive and tobacco essence.
4. The preparation method of reconstituted tobacco according to claim 3, wherein the coating liquid comprises the following raw materials in parts by weight:
1-15 parts of a hydrophobic agent, 1-10 parts of an adhesive, 1-3 parts of a dispersant, 1-10 parts of a tobacco extract, 1-5 parts of a food additive, 1-3 parts of a tobacco essence and 70-95 parts of water.
5. The method for preparing reconstituted tobacco according to any one of claims 1 to 4, wherein the water repellent agent is one or more of paraffin, rice bran wax, hard mineral wax, shellac, sunflower wax, candelilla wax and carnauba wax;
the adhesive is one or more of carrageenan, xanthan gum, guar gum, carob bean gum, locust bean gum, pectin, sodium carboxymethylcellulose, methylcellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, cationic starch and alginate;
the dispersant is one or more of polyethylene glycol, sodium carboxymethyl starch, sodium polyacrylate, hydroxyethyl starch, gum arabic, and sodium lignosulfonate.
6. The preparation method of reconstituted tobacco according to any one of claims 3 to 4, wherein the tobacco extract is one or more of flue-cured tobacco extract, sun-cured tobacco extract, burley tobacco extract and aromatic tobacco extract;
the food additive is one or more of glyceryl monostearate, glyceryl distearate and glyceryl tristearate;
the tobacco essence is two or more of vanillin, menthol, geraniol and citronellol.
7. The method of claim 1, wherein the reconstituted tobacco has a basis weight of 40-200g/m 2 The mass fraction of the smoke agent in the reconstituted tobacco body is 0-30%.
8. The method for preparing reconstituted tobacco according to claim 7, wherein the reconstituted tobacco body is prepared by one or more processes of a rolling method, a thick pulp method, a paper making method and a dry method.
9. The method for preparing reconstituted tobacco according to claim 1, wherein the coating liquid is applied to the surface of the reconstituted tobacco body by one or more processes of roll coating, size press, metering rod film transfer coating, dip coating, spray coating, curtain coating, multilayer slide coating, slit coating and extrusion coating.
10. The method for preparing reconstituted tobacco according to claim 1, wherein the mass fraction of the coating layer in the reconstituted tobacco is 1-10%, and the mass fraction of the reconstituted tobacco body is 90-99%.
11. The method of producing reconstituted tobacco according to any one of claims 1 or 10, wherein the coating rate is 1 to 15% and the coating amount is 1 to 15g/m at the time of coating 2 。
12. The method of any of claims 1 or 10, wherein the static contact angle of the coating layer is 70-120 °.
13. The preparation method of the reconstituted tobacco according to claim 1, wherein the drying is performed by hot air at 80-110 ℃ for 20-40min until the moisture of the reconstituted tobacco is 8-12%.
14. A reconstituted tobacco prepared by the preparation method of any one of claims 1 to 13.
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