Shredded tobacco pipe and charging solid-state fermentation method thereof

Abstract

The invention provides shredded tobacco pipes and a charging solid-state fermentation method thereof. The charging solid-state fermentation method of the tobacco pipe shreds comprises the following steps that first tobacco strips and second tobacco strips are prepared respectively, tobacco leaf components of the first tobacco strips are mixed with first fermentation feed liquid, first fermentation treatment is carried out, and the first tobacco strips are prepared; mixing the tobacco leaf component of the second tobacco lamina with the second fermentation material liquid, and performing second fermentation treatment to prepare the second tobacco lamina; mixing the first tobacco lamina, the second tobacco lamina and third fermentation feed liquid, and sequentially performing third fermentation treatment and drying treatment to prepare mixed tobacco lamina; shaping the mixed tobacco strips, mixing the shaped mixed tobacco strips with microorganisms, and carrying out solid-state fermentation for 20-30 days at the temperature of 20-25 DEG C under the condition of 60%-70%, so as to prepare the shredded tobacco pipe.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a pipe tobacco and a solid-state fermentation method thereof. Background Technology

[0002] In the tobacco processing industry, to improve tobacco quality, natural aging or high-temperature, high-humidity fermentation (artificial fermentation) is commonly used to process tobacco raw materials. During natural aging, the moisture content of the tobacco needs to be controlled at 11%–12%. However, this method has significant drawbacks: the aging period is too long, resulting in a low rate of metabolic transformation of the tobacco's internal substances, and the improvement effect on tobacco quality is not significant, making it difficult to meet the dual demands of efficiency and quality in pipe tobacco production.

[0003] While artificial fermentation can force the metabolism and decomposition of substances within tobacco in a short period of time (within one week) by artificially controlling temperature and humidity, and has a significant effect on the decomposition and metabolism of nitrogenous substances in tobacco, it also has some problems that cannot be ignored: on the one hand, the rapid decomposition and release of nitrogenous substances in a short period of time will result in a low level of mellowness in the smoke of the final tobacco product; on the other hand, although some aroma-producing substances will accumulate during the fermentation process, the prolonged high-temperature environment will easily cause more aroma-producing substances to volatilize, thereby reducing the aroma concentration and richness of tobacco, and failing to meet the high standards of pipe tobacco for smoke taste and aroma quality.

[0004] Therefore, how to overcome the shortcomings of existing tobacco processing methods and produce high-quality pipe tobacco with excellent smoke mellowness, high aroma concentration and rich aroma has become a technical problem that urgently needs to be solved in the current tobacco processing field. Summary of the Invention

[0005] This application mainly provides a solid-state fermentation method for pipe tobacco that enhances its elegant and pure aroma, as well as its richness and complexity.

[0006] This application achieves the above objectives through the following technical solutions:

[0007] One aspect of this application provides a method for solid-state fermentation of pipe tobacco, comprising the following steps:

[0008] The preparation of a first tobacco leaf and a second tobacco leaf is carried out separately. The preparation of the first tobacco leaf includes: mixing the tobacco leaves of the first tobacco leaf with a first fermentation liquid and performing a first fermentation treatment to prepare the first tobacco leaf. The first fermentation liquid includes invert sugar, honey, pipe tobacco liquid, bean flavoring liquid, sun-dried tobacco extract, and licorice powder in a mass ratio of 0.5~1:2~3:0.1~0.2:0.1~0.2:0.1~0.2:0.5~1. The tobacco leaves in the first tobacco leaf include one or more of sun-dried tobacco leaves, burley tobacco leaves, and flavored tobacco leaves. The preparation of the second tobacco leaf includes: mixing the tobacco leaves of the second tobacco leaf with a second fermentation liquid and performing a second fermentation treatment to prepare the second tobacco leaf. The second fermentation liquid includes invert sugar, honey, bean flavoring liquid, pipe tobacco liquid, and propylene glycol in a mass ratio of 0.5~1:1~2:0.1~0.2:0.1~0.2:0.5~1. The tobacco leaves in the second tobacco leaf include flue-cured tobacco leaves.

[0009] The first tobacco leaf, the second tobacco leaf, and the third fermentation liquid are mixed and then subjected to a third fermentation treatment and a drying treatment in sequence to prepare mixed tobacco leaf;

[0010] The mixed tobacco is shaped and then mixed with microorganisms. Solid-state fermentation is carried out at a temperature of 20℃~25℃ and a humidity of 60%~70% for 20 to 30 days to prepare pipe tobacco.

[0011] In some embodiments, the microorganisms include one or more of Bacillus and Pseudomonas.

[0012] In some embodiments, the mass ratio of the first fermentation liquid to the tobacco leaves in the first tobacco leaf is 10-20:100;

[0013] And / or, the conditions for the first fermentation treatment include: fermentation at 80℃~100℃ and 80%~100% humidity for 12h~24h.

[0014] In some embodiments, the mass ratio of the second fermentation liquid to the tobacco leaves in the second tobacco leaf is 5-10:100;

[0015] And / or, the conditions for the second fermentation treatment include: fermentation at 50℃~60℃ and 70%~80% humidity for 12h~24h.

[0016] In some embodiments, the mass ratio of the first tobacco leaf to the second tobacco leaf is 3~4:5~6;

[0017] And / or, based on the total mass of the first tobacco leaf and the second tobacco leaf, the mass ratio of the third fermentation liquid is 10% to 20%.

[0018] In some embodiments, the third fermentation liquid comprises invert sugar, honey, coffee extract, cigar extract, and maple extract in a mass ratio of 0.5~1:2~3:0.1~0.2:0.1~0.2:0.1~0.2.

[0019] In some embodiments, the conditions for the third fermentation treatment include fermentation at 50°C to 60°C and 70% to 80% humidity for 12 to 24 hours.

[0020] In some embodiments, the drying process is performed to reduce the moisture content of the mixed tobacco to 17% to 19%.

[0021] In some embodiments, the molding pressure is 20 MPa to 30 MPa.

[0022] This application also provides a type of pipe tobacco prepared using the above-mentioned solid-state fermentation method for adding pipe tobacco.

[0023] In the solid-state fermentation method for pipe tobacco of this application, a first sheet of tobacco and a second sheet of tobacco are first prepared separately. The first sheet of tobacco is fermented using specific tobacco leaf components and a first fermentation liquid with a specific ratio of components, resulting in a better aroma harmony and effectively reducing the unpleasant odors of sun-dried tobacco. Similarly, the second sheet of tobacco is fermented using specific tobacco leaf components and a second fermentation liquid with a specific ratio of components, resulting in a better aroma harmony. The first sheet of tobacco, the second sheet of tobacco, and the third fermentation liquid are then mixed and fermented and dried sequentially to prepare a mixed sheet of tobacco. Afterward, the mixed sheet of tobacco is shaped and mixed with microorganisms, undergoing a specific solid-state fermentation process to prepare pipe tobacco. The shaped mixed sheet of tobacco provides a stable microenvironment for the microorganisms that play a dominant role in the fermentation process. External bacteria are less likely to interfere with the fermentation process, and the aroma-producing substances produced during fermentation are less likely to volatilize, resulting in stable fermentation quality. This leads to an improved aroma and quality in the solid-state fermented pipe tobacco, with increased aroma richness and penetration, a mellow smoke, a clean and comfortable aftertaste, and reduced strength and irritation, effectively improving the quality of the pipe tobacco. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, a detailed description of specific embodiments of this application is provided. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise specifically stated, all raw materials, reagents, instruments, and equipment used in this application are commercially available or can be prepared by existing methods.

[0026] Unless otherwise stated or in case of contradiction, the terms or phrases used herein shall have the following meanings:

[0027] The terms "and / or," "or / and," and "and / or" as used herein include any one of two or more of the related listed items, as well as any and all combinations of the related listed items. These arbitrary and all combinations include any two related listed items, any more related listed items, or a combination of all related listed items. It should be noted that when at least three items are connected by at least two conjunctions selected from "and / or," "or / and," and "and / or," it should be understood that in this application, the technical solution undoubtedly includes technical solutions connected by "logical AND," and also undoubtedly includes technical solutions connected by "logical OR." For example, "A and / or B" includes three parallel solutions: A, B, and A+B. For example, the technical solution of "A, and / or, B, and / or, C, and / or, D" includes any one of A, B, C, and D (that is, a technical solution that is connected by "logical OR"), as well as any and all combinations of A, B, C, and D, that is, combinations of any two or three of A, B, C, and D, and also combinations of all four of A, B, C, and D (that is, a technical solution that is connected by "logical AND").

[0028] In this application, the terms "multiple", "various", "multiple times", "multi-dimensional", etc., unless otherwise specified, refer to a quantity greater than or equal to 2. For example, "one or more" means one or more than or equal to two.

[0029] In this application, terms such as "further," "even further," and "particularly" are used to describe purposes and indicate differences in content, but should not be construed as limiting the scope of protection of this application.

[0030] In this application, "optionally," "optionally," and "optional" mean that something is optional, that is, it means that it is selected from either "with" or "without." If there are multiple "optional" entries in a technical solution, unless otherwise specified, and there are no contradictions or mutual constraints, each "optional" entry shall be independent.

[0031] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0032] In this application, numerical intervals (i.e., numerical ranges) are involved. Unless otherwise specified, the selected numerical distributions within the aforementioned numerical intervals are considered continuous and include the two endpoints (i.e., the minimum and maximum values) of the numerical range, as well as every value between these two endpoints. Unless otherwise specified, when a numerical interval refers only to integers within that interval, it includes the two endpoint integers of the numerical range, as well as every integer between the two endpoints. In this document, this is equivalent to directly listing every integer. For example, if t is an integer selected from 1 to 10, it means that t is any integer selected from the group of integers consisting of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. Furthermore, when multiple ranges are provided to describe features or characteristics, these ranges can be merged. In other words, unless otherwise specified, the ranges disclosed herein should be understood to include any and all subranges to which they are included.

[0033] Unless otherwise specified, the temperature parameters in this application are permitted to be either constant-temperature treatment or variations within a certain temperature range. It should be understood that the constant-temperature treatment allows temperature fluctuations within the precision range of the instrument control, such as ±5℃, ±4℃, ±3℃, ±2℃, or ±1℃.

[0034] Solid-state fermentation refers to the fermentation process carried out by microorganisms on a moist solid substrate. There is little or no free water, and the substrate contains gas, liquid, and solid phases. Microorganisms directly attach to the surface of solid particles and use the nutrients in the substrate for growth and metabolism.

[0035] Based on this, one embodiment of this application provides a solid-state fermentation method for adding tobacco shreds, including steps S100 to S300.

[0036] Step S100: Prepare a first tobacco leaf and a second tobacco leaf respectively. The preparation of the first tobacco leaf includes: mixing the tobacco leaves of the first tobacco leaf with a first fermentation liquid and performing a first fermentation treatment to prepare the first tobacco leaf. The first fermentation liquid includes invert sugar, honey, pipe tobacco liquid, bean flavoring liquid, sun-dried tobacco extract, and licorice powder in a mass ratio of 0.5~1:2~3:0.1~0.2:0.1~0.2:0.5~1. The tobacco leaves in the first tobacco leaf include one or more of sun-dried tobacco leaves, burley tobacco leaves, and flavored tobacco leaves. The preparation of the second tobacco leaf includes: mixing the tobacco leaves of the second tobacco leaf with a second fermentation liquid and performing a second fermentation treatment to prepare the second tobacco leaf. The second fermentation liquid includes invert sugar, honey, bean flavoring liquid, pipe tobacco liquid, and propylene glycol in a mass ratio of 0.5~1:1~2:0.1~0.2:0.1~0.2:0.5~1. The tobacco leaves in the second tobacco leaf include flue-cured tobacco leaves.

[0037] As an example, the mass ratio of the above-mentioned invert sugar, honey, pipe tobacco liquid, bean spice liquid, sun-dried tobacco extract, and licorice powder can be 0.5:2.0:0.1:0.1:0.1:0.5, 0.75:2.5:0.15:0.15:0.15:0.75, 1.0:3.0:0.2:0.2:0.2:1.0, 0.5:2.5:0.1:0.15:0.2:1.0, or 1.0:2.0:0.2:0.1:0.15:0.5.

[0038] The mass ratio of the above-mentioned invert sugar, honey, bean flavoring liquid, pipe tobacco liquid, and propylene glycol can be 0.5:1:0.1:0.1:0.5, 0.6:1.2:0.12:0.12:0.6, 0.8:1.5:0.15:0.15:0.8, 1.0:1.8:0.18:0.18:1.0, 0.7:1.3:0.14:0.16:0.9, or 0.9:1.6:0.17:0.13:0.7.

[0039] In some embodiments, the mass ratio of the first fermentation liquid to the tobacco leaves in the first tobacco leaf is 10 to 20:100. For example, the mass ratio can be 10:100, 11:100, 12:100, 13:100, 14:100, 15:100, 16:100, 17:100, 18:100, 19:100, or 20:100.

[0040] In some embodiments, the conditions for the first fermentation treatment include fermentation at 80°C to 100°C and 80% to 100% humidity for 12 to 24 hours.

[0041] For example, the temperature can be 80℃, 81℃, 82℃, 83℃, 84℃, 85℃, 86℃, 87℃, 88℃, 89℃, 90℃, 91℃, 92℃, 93℃, 94℃, 95℃, 96℃, 97℃, 98℃, 99℃, or 100℃; the humidity can be 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or 100%; and the time can be 12h, 13h, 14h, 15h, 16h, 17h, 18h, 19h, 20h, 21h, 22h, 23h, or 24h.

[0042] In some embodiments, the mass ratio of the second fermentation liquid to the tobacco leaves in the second tobacco leaf is 5 to 10:100. For example, the mass ratio can be 5:100, 6:100, 7:100, 8:100, 9:100 or 10:100.

[0043] In some embodiments, the conditions for the second fermentation treatment include fermentation at 50°C to 60°C and 70% to 80% humidity for 12 to 24 hours.

[0044] For example, the temperature can be 50℃, 51℃, 52℃, 53℃, 54℃, 55℃, 56℃, 57℃, 58℃, 59℃ or 60℃, the humidity can be 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79% or 80%, and the time can be 12h, 13h, 14h, 15h, 16h, 17h, 18h, 19h, 20h, 21h, 22h, 23h or 24h.

[0045] Step S200: Mix the first tobacco leaf, the second tobacco leaf, and the third fermentation liquid, and perform the third fermentation treatment and drying treatment in sequence to prepare mixed tobacco leaf.

[0046] In some embodiments, the mass ratio of the first tobacco to the second tobacco is 3~4:5~6. For example, the mass ratio can be 3:5, 3:6, 4:5 or 4:6.

[0047] In some embodiments, based on the total mass of the first tobacco and the second tobacco, the mass percentage of the third fermentation liquid is 10% to 20%. For example, the mass percentage can be 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, or 20%.

[0048] In some embodiments, the third fermentation liquid comprises invert sugar, honey, coffee extract, cigar extract, and maple extract in a mass ratio of 0.5~1:2~3:0.1~0.2:0.1~0.2:0.1~0.2. For example, the mass ratio may be 0.5:2.0:0.1:0.1:0.1, 0.75:2.5:0.15:0.15:0.15, 1.0:3.0:0.2:0.2:0.2, 0.5:2.5:0.1:0.15:0.2, or 1.0:2.0:0.2:0.1:0.15.

[0049] In some embodiments, the conditions for the third fermentation treatment include fermentation at 50°C to 60°C and 70% to 80% humidity for 12 to 24 hours.

[0050] As an example, the above temperatures can be 50℃, 51℃, 52℃, 53℃, 54℃, 55℃, 56℃, 57℃, 58℃, 59℃, or 60℃; the humidity can be 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, or 80%; and the time can be 12h, 13h, 14h, 15h, 16h, 17h, 18h, 19h, 20h, 21h, 22h, 23h, or 24h.

[0051] In some embodiments, the above-described drying process is performed to make the moisture content in the mixed tobacco 17% to 19%. For example, the moisture content may be 17%, 17.5%, 18%, 18.5%, or 19%.

[0052] Step S300: After shaping the above-mentioned mixed tobacco leaves, mix them with microorganisms and carry out solid-state fermentation at a temperature of 20℃~25℃ and a humidity of 60%~70% for 20 to 30 days to prepare pipe tobacco.

[0053] For example, the temperature can be 20℃, 21℃, 22℃, 23℃, 24℃ or 25℃, the humidity can be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69% or 70%, and the time can be 20 days, 21 days, 22 days, 23 days, 24 days, 25 days, 26 days, 27 days, 28 days, 29 days or 30 days.

[0054] In some embodiments, the aforementioned microorganisms include one or more of Bacillus and Pseudomonas.

[0055] It is understandable that the aforementioned specific Bacillus and Pseudomonas species can effectively promote the degradation of macromolecules during fermentation. During their growth and metabolism, they can synthesize and release some volatile aroma substances, thereby improving the quality of tobacco fermentation.

[0056] In some embodiments, the molding pressure is 20 MPa to 30 MPa. For example, the pressure can be 20 MPa, 21 MPa, 22 MPa, 23 MPa, 24 MPa, 25 MPa, 26 MPa, 27 MPa, 28 MPa, 29 MPa or 30 MPa.

[0057] In some embodiments, after the above solid-state fermentation step, a shredding process is further included to prepare pipe tobacco.

[0058] In some embodiments, the shred width is 1.5mm to 2.5mm.

[0059] In the solid-state fermentation method for pipe tobacco of this application, a first sheet of tobacco and a second sheet of tobacco are first prepared separately. The first sheet of tobacco is fermented using specific tobacco leaf components and a first fermentation liquid with a specific ratio of components, resulting in a better aroma harmony and effectively reducing the unpleasant odors of sun-dried tobacco. Similarly, the second sheet of tobacco is fermented using specific tobacco leaf components and a second fermentation liquid with a specific ratio of components, resulting in a better aroma harmony. The first sheet of tobacco, the second sheet of tobacco, and the third fermentation liquid are then mixed and fermented and dried sequentially to prepare a mixed sheet of tobacco. Afterward, the mixed sheet of tobacco is shaped and mixed with microorganisms, undergoing a specific solid-state fermentation process to prepare pipe tobacco. The shaped mixed sheet of tobacco provides a stable microenvironment for the microorganisms that play a dominant role in the fermentation process. External bacteria are less likely to interfere with the fermentation process, and the aroma-producing substances produced during fermentation are less likely to volatilize, resulting in stable fermentation quality. This leads to an improved aroma and quality in the solid-state fermented pipe tobacco, with increased aroma richness and penetration, a mellow smoke, a clean and comfortable aftertaste, and reduced strength and irritation, effectively improving the quality of the pipe tobacco.

[0060] Another embodiment of this application provides a pipe tobacco shred, which is prepared by the above-mentioned solid-state fermentation method for adding ingredients to the pipe tobacco shred.

[0061] The aforementioned pipe tobacco has the characteristics of improved elegance and purity of aroma, as well as increased richness and complexity of aroma.

[0062] The present application will be further described below with reference to specific embodiments and comparative examples, but these should not be construed as limiting the scope of protection of the present application. Unless otherwise specified, the raw materials involved in the following specific embodiments are all commercially available, the instruments used are all commercially available, and the processes involved are conventionally selected by those skilled in the art unless otherwise specified.

[0063] Example 1

[0064] 1. Preparation of the first tobacco leaf: 2022 Sichuan Deyang Grade 4 tobacco (Shiyan No. 1), 2022 Sichuan Deyang cigar Fi-C-3-Bt-M (Dexue No. 3), 2022 Sichuan Dazhou cigar Fi-B-3-Bt-M (Chuanxue No. 3), multi-origin Burley tobacco blend, and 2018 Yunnan Dehong spice tobacco blend AJ were mixed evenly in a ratio of 2:1:3:1:1. 10% of the liquid (invert sugar: honey: pipe tobacco liquid: bean spice liquid: sun-dried yellow tobacco extract: licorice powder in a ratio of 0.5:2:0.1:0.1:0.1:0.5) was evenly applied and fermented in an environment of 80℃ and 90% humidity for 12 hours to form the first tobacco leaf. Among them, 1) Invert sugar production method: Heat sucrose over medium heat until the temperature reaches between 108°C and 115°C. Do not stir during this process to prevent the syrup from crystallizing. After boiling, reduce the heat to low. At this time, a lot of foam will appear. Keep the syrup at a gentle simmer for 30 minutes. After removing it from the heat, place the pot in a basin of cold water (water bath cooling) to cool it quickly to below 90°C. Dissolve baking soda in a small amount of water and add it to the warm syrup in small batches. At this time, a lot of bubbles will be generated. Stir until the bubbles disappear and cool. 2) Pipe tobacco extract method: After the holly leaves are naturally fermented, they are mixed with holly fruits and boiled for 1 hour. Wrap the mixture in cheesecloth and press to extract the juice, then boil and concentrate it. 3) Bean flavor extract method: Roast cocoa beans or soybeans, grind them, extract with alcohol, and remove some of the water using a vacuum concentration method. 4) Extraction method of sun-dried tobacco extract: Sun-dried tobacco leaves are extracted by reflux with ethanol. The extract is filtered through a ceramic membrane and concentrated under reduced pressure to obtain an extract. Then, molecular distillation technology is used to carry out fine separation at high vacuum and 100°C.

[0065] 2. Preparation of the second tobacco leaf: The following tobacco leaf blends were prepared in a ratio of 1:4:3:3:4: 2017 Hubei flue-cured tobacco blend XQ2, 2021 Hunan Changsha flue-cured tobacco blend XQ1, 2019 Sichuan Liangshan flue-cured tobacco blend YQ2, 2021 Fujian Sanming flue-cured tobacco blend XQ2, and 2020 Henan Pingdingshan Jiaxian flue-cured tobacco single-batch tobacco C3F. 5% of the mixture (invert sugar: honey: bean flavoring liquid: pipe tobacco liquid: propylene glycol in a ratio of 0.5:1:0.1:0.1:0.5) were evenly applied and fermented at 50℃ and 70% humidity for 12 hours to form the second tobacco leaf.

[0066] 3. Mixing Process: Mix the first and second tobacco leaves evenly in a 4:6 ratio, and uniformly apply 10% liquid (the mass ratio of invert sugar: honey: coffee extract: cigar extract: maple extract is 0.5:2:0.1:0.1:0.1). Ferment at 50℃ and 70% humidity for 12 hours to form mixed tobacco leaves. Dehydrate the tobacco leaves to 18.0% moisture content. 1) Coffee extract extraction method: Roast and grind coffee beans, place them in a high-pressure container, and pass supercritical carbon dioxide (between gas and liquid) through the coffee powder. Collect the supercritical solution, and release CO2 gas at normal pressure to obtain the extract. 2) Cigar tobacco extract extraction method: Cigar tobacco leaves are mixed with glycerin at a ratio of 1:10 and soaked for 30 hours. Then, the distillate is obtained by extraction (temperature usually controlled at 80℃~120℃), filtration (50~80 mesh sieve), and vacuum distillation (pressure range 0.5KPa~10KPa). The distillate is mixed with ethanol and concentrated through a nanofiltration membrane (inlet pressure 0.6MPa~0.8MPa) to obtain the final extract. 3) Maple extract extraction method: Maple bark is extracted using steam distillation. Steam carries out the volatile components in the plant material. After condensation, the oil-water mixture is collected and then extracted with organic solvents such as petroleum ether and ethyl acetate.

[0067] 4. Shaping: Take 300g of mixed tobacco flakes and shape them under a pressure of 25MPa, allowing them to grow. Width Height is 120mm 70mm 20mm smoke brick.

[0068] 5. Solid-state fermentation: The shaped tobacco cakes are pressed in a mold for 48 hours to solidify their shape. Ten solidified tobacco cakes are stacked together and placed in a sealed environment at 20℃ and 60% humidity for 20 days of fermentation. During the fermentation process, the tobacco cakes are taken to a ventilated environment and turned over every 3 days to complete the solid-state fermentation. The tobacco cakes are then cut into tobacco shreds with a thickness of 2mm (the thickness of the tobacco sheet) to prepare pipe tobacco shreds.

[0069] Example 2

[0070] 1. Preparation of the first tobacco leaf: 2022 Sichuan Deyang Grade 4 tobacco (Shiyan No. 1), 2022 Sichuan Deyang cigar Fi-C-3-Bt-M (Dexue No. 3), 2022 Sichuan Dazhou cigar Fi-B-3-Bt-M (Chuanxue No. 3), multi-origin Burley tobacco blend, and 2018 Yunnan Dehong spice tobacco blend AJ were mixed evenly in a ratio of 2:1:3:1:1. A 15% liquid was evenly applied (invert sugar: honey: pipe tobacco liquid: bean spice liquid: sun-dried yellow tobacco extract: licorice powder in a ratio of 0.75:2.5:0.15:0.15:0.15:0.75). Fermentation was carried out in an environment of 80℃ and 90% humidity for 24 hours to form the first tobacco leaf.

[0071] 2. Preparation of the second tobacco leaf: The following tobacco leaf blends were prepared in a 1:4:3:3:4 ratio: 2017 Hubei flue-cured tobacco blend XQ2, 2021 Hunan Changsha flue-cured tobacco blend XQ1, 2019 Sichuan Liangshan flue-cured tobacco blend YQ2, 2021 Fujian Sanming flue-cured tobacco blend XQ2, and 2020 Henan Pingdingshan Jiaxian flue-cured tobacco single-batch tobacco C3F. A 7.5% liquid (invert sugar: honey: bean flavoring liquid: pipe tobacco liquid: propylene glycol ratio of 0.75:1.5:0.15:0.15:0.75) was then applied evenly and fermented at 50℃ and 70% humidity for 24 hours to form the second tobacco leaf.

[0072] 3. Mixing treatment: Mix the first and second tobacco leaves evenly in a 4:6 ratio, and evenly apply 15% liquid (invert sugar: honey: coffee extract: cigar extract: maple extract in a ratio of 0.75:2.5:0.15:0.15:0.15). Ferment at 50℃ and 70% humidity for 24 hours to form mixed tobacco leaves. Dehydrate the tobacco leaves to a moisture content of 18.0%.

[0073] 4. Shaping: Take 300g of mixed tobacco flakes and shape them under a pressure of 25MPa, allowing them to grow. Width Height is 120mm 70mm 20mm smoke brick.

[0074] 5. Solid-state fermentation: The shaped tobacco cakes are pressed in a mold for 48 hours to solidify their shape. Ten solidified tobacco cakes are stacked together and placed in a sealed environment at 20°C and 60% humidity for 25 days to ferment. During the fermentation process, the tobacco cakes are taken to a ventilated environment and turned over every 3 days to complete the solid-state fermentation. The tobacco cakes are then cut into tobacco shreds to prepare pipe tobacco shreds.

[0075] Example 3

[0076] 1. Preparation of the first tobacco leaf: 2022 Sichuan Deyang Grade 4 tobacco (Shiyan No. 1), 2022 Sichuan Deyang cigar Fi-C-3-Bt-M (Dexue No. 3), 2022 Sichuan Dazhou cigar Fi-B-3-Bt-M (Chuanxue No. 3), multi-origin Burley tobacco blend, and 2018 Yunnan Dehong spice tobacco blend AJ were mixed evenly in a ratio of 2:1:3:1:1. 20% of the liquid (invert sugar: honey: pipe tobacco liquid: bean spice liquid: sun-dried yellow tobacco extract: licorice powder in a ratio of 1:3:0.2:0.2:0.2:1) was evenly applied and fermented in an environment of 80℃ and 90% humidity for 24 hours to form the first tobacco leaf.

[0077] 2. Preparation of the second tobacco leaf: The following tobacco leaf blends were prepared in a 1:4:3:3:4 ratio: 2017 Hubei flue-cured tobacco blend XQ2, 2021 Hunan Changsha flue-cured tobacco blend XQ1, 2019 Sichuan Liangshan flue-cured tobacco blend YQ2, 2021 Fujian Sanming flue-cured tobacco blend XQ2, and 2020 Henan Pingdingshan Jiaxian flue-cured tobacco single-batch tobacco C3F. 10% of the liquid was then evenly applied (invert sugar: honey: bean flavoring liquid: pipe tobacco liquid: propylene glycol in a ratio of 1:2:0.2:0.2:1). Fermentation was carried out at 50℃ and 70% humidity for 24 hours to form the second tobacco leaf.

[0078] 3. Mixing treatment: Mix the first and second tobacco leaves evenly in a ratio of 4:6, and apply 20% liquid (invert sugar: honey: coffee extract: cigar extract: maple extract in a ratio of 1:3:0.2:0.2:0.2) evenly. Ferment at 50℃ and 70% humidity for 24 hours to form mixed tobacco leaves. Dehydrate the tobacco leaves to 18.0% moisture content.

[0079] 4. Shaping: Take 300g of mixed tobacco flakes and shape them under a pressure of 25MPa, allowing them to grow. Width Height is 120mm 70mm 20mm smoke brick.

[0080] 5. Solid-state fermentation: After shaping, the tobacco cakes are pressed in a mold for 48 hours to solidify. Ten tobacco cakes are stacked together and placed in a sealed environment at 20°C and 60% humidity for 30 days to ferment. During the fermentation process, the tobacco cakes are taken to a ventilated environment and turned over every 3 days to complete solid-state fermentation. The tobacco cakes are then cut into tobacco shreds to prepare pipe tobacco shreds.

[0081] Comparative Example 1

[0082] 1. Preparation of the first tobacco leaf: 2022 Sichuan Deyang Grade 4 tobacco (Shiyan No. 1), 2022 Sichuan Deyang cigar Fi-C-3-Bt-M (Dexue No. 3), 2022 Sichuan Dazhou cigar Fi-B-3-Bt-M (Chuanxue No. 3), a blend of multi-origin Burley tobacco, and 2018 Yunnan Dehong spice tobacco (AJ) were mixed evenly in a ratio of 0.5:1.5:1.5:1.5:0.4. A 5% mixture of invert sugar, honey, pipe tobacco syrup, bean spice syrup, sun-dried tobacco extract, and licorice powder was evenly applied. The mixture was fermented for 10 hours at 80-100℃ and 80-100% humidity to form the first tobacco leaf.

[0083] 2. Preparation of the second tobacco flakes: 2017 Hubei flue-cured tobacco blend XQ2, 2021 Hunan Changsha flue-cured tobacco blend XQ1, 2019 Sichuan Liangshan flue-cured tobacco blend YQ2, 2021 Fujian Sanming flue-cured tobacco blend XQ2, and 2020 Henan Pingdingshan Jiaxian flue-cured tobacco single-batch flake C3F were uniformly mixed in a ratio of 2.5:3:2:2:3. A 15% liquid mixture (invert sugar: honey: bean flavoring liquid: pipe tobacco liquid: propylene glycol in a ratio of 1.5:0.5:0.3:0.3:1.5) was then evenly applied. Fermentation was carried out at 50-60℃ and 70-80% humidity for 8 hours to form the second tobacco flakes.

[0084] 3. Mixing treatment: Mix the first and second tobacco leaves evenly in a 2:3 ratio, and evenly apply 5% liquid (invert sugar: honey: coffee extract: cigar extract: maple extract in a ratio of 1.5:1.5:0.3:0.3:0.3). Ferment for 10 hours at 50-60℃ and 70-80% humidity to form mixed tobacco leaves. Dehydrate the tobacco leaves to 16% moisture content.

[0085] 4. Shaping: Take 250g of mixed tobacco leaves and shape them under a pressure of 15MPa. Shaping growth. Width Height is 100mm 100mm 35mm smoke brick.

[0086] 5. Fermentation: After shaping, the tobacco cakes are pressed in a mold for 24 hours to set their shape. After setting, the tobacco cakes are stacked into groups of 5 and placed in a sealed environment at 30℃ and 75% humidity for 15 days to ferment. During the fermentation process, the tobacco cakes are taken to a ventilated environment and turned over every 3-5 days. The tobacco cakes are then cut into tobacco shreds to prepare pipe tobacco shreds.

[0087] Testing: Sensory quality evaluation was performed on the pipe tobacco prepared in the above embodiments and comparative examples.

[0088] The sensory quality evaluation was conducted by the pipe tobacco evaluation team of Sichuan Sanlian New Materials Co., Ltd., according to the sensory evaluation standards described in Table 1. The final evaluation results are shown in Table 2.

[0089] Table 1

[0090]

[0091] Table 2

[0092]

[0093] In summary, compared with the solid-state fermentation method for pipe tobacco used in the comparative example, the pipe tobacco samples after solid-state fermentation have improved aroma elegance and purity, increased aroma richness and layering, better aroma harmony and room comfort, cleaner and more comfortable aftertaste, less off-flavors and irritation, reduced strength to a certain extent, brighter tobacco luster, more even combustion, denser ash, finer ash, and whiter ash.

[0094] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for solid-state fermentation of pipe tobacco, characterized in that, Includes the following steps: The preparation of a first tobacco leaf and a second tobacco leaf is carried out separately. The preparation of the first tobacco leaf includes: mixing the tobacco leaves of the first tobacco leaf with a first fermentation liquid and performing a first fermentation treatment to prepare the first tobacco leaf. The first fermentation liquid includes invert sugar, honey, pipe tobacco liquid, bean flavoring liquid, sun-dried tobacco extract, and licorice powder in a mass ratio of 0.5~1:2~3:0.1~0.2:0.1~0.2:0.1~0.2:0.5~1. The tobacco leaves in the first tobacco leaf include one or more of sun-dried tobacco leaves, burley tobacco leaves, and flavored tobacco leaves. The preparation of the second tobacco leaf includes: mixing the tobacco leaves of the second tobacco leaf with a second fermentation liquid and performing a second fermentation treatment to prepare the second tobacco leaf. The second fermentation liquid includes invert sugar, honey, bean flavoring liquid, pipe tobacco liquid, and propylene glycol in a mass ratio of 0.5~1:1~2:0.1~0.2:0.1~0.2:0.5~1. The tobacco leaves in the second tobacco leaf include flue-cured tobacco leaves. The first tobacco leaf, the second tobacco leaf, and the third fermentation liquid are mixed and then subjected to a third fermentation treatment and a drying treatment in sequence to prepare mixed tobacco leaf; The mixed tobacco is shaped and then mixed with microorganisms. Solid-state fermentation is carried out at a temperature of 20℃~25℃ and a humidity of 60%~70% for 20 to 30 days to prepare pipe tobacco.

2. The solid-state fermentation method for adding pipe tobacco as described in claim 1, characterized in that, The microorganisms include one or more of Bacillus and Pseudomonas.

3. The solid-state fermentation method for adding pipe tobacco as described in claim 1, characterized in that, The mass ratio of the first fermentation liquid to the tobacco leaves in the first tobacco leaf is 10~20:100; And / or, the conditions for the first fermentation treatment include: fermentation at 80℃~100℃ and 80%~100% humidity for 12h~24h.

4. The solid-state fermentation method for adding pipe tobacco as described in claim 1, characterized in that, The mass ratio of the second fermentation liquid to the tobacco leaves in the second tobacco leaf is 5~10:100; And / or, the conditions for the second fermentation treatment include: fermentation at 50℃~60℃ and 70%~80% humidity for 12h~24h.

5. The solid-state fermentation method for adding pipe tobacco as described in claim 1, characterized in that, The mass ratio of the first tobacco leaf to the second tobacco leaf is 3~4:5~6; And / or, based on the total mass of the first tobacco leaf and the second tobacco leaf, the mass ratio of the third fermentation liquid is 10% to 20%.

6. The solid-state fermentation method for adding pipe tobacco as described in any one of claims 1 to 5, characterized in that, The third fermentation liquid comprises invert sugar, honey, coffee extract, cigar extract, and maple extract in a mass ratio of 0.5~1:2~3:0.1~0.2:0.1~0.2:0.1~0.

2.

7. The solid-state fermentation method for adding pipe tobacco as described in any one of claims 1 to 5, characterized in that, The conditions for the third fermentation treatment include: fermentation at 50℃~60℃ and 70%~80% humidity for 12h~24h.

8. The solid-state fermentation method for adding pipe tobacco as described in any one of claims 1 to 5, characterized in that, The drying process is performed to reduce the moisture content of the mixed tobacco to 17%~19%.

9. The solid-state fermentation method for adding pipe tobacco as described in any one of claims 1 to 5, characterized in that, The molding pressure is 20 MPa to 30 MPa.

10. A type of pipe tobacco, characterized in that, It is prepared by the solid-state fermentation method for adding pipe tobacco as described in any one of claims 1 to 9.

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