Screening treatment method for cigar tobacco leaves

Abstract

The invention discloses a screening treatment method of cigar tobacco leaves, which comprises the following steps: measuring the initial mould content of the cigar tobacco leaves, screening and grading according to the initial mould content, and marking the cigar tobacco leaves as normal raw materials when the initial mould content is 10-105 CFU / g; when the initial mould content is greater than 105 CFU / g, the cigar tobacco leaves are marked as high-risk raw materials; the normal raw materials or the high-risk raw materials are subjected to flexible moisture regaining treatment, the flexible moisture regaining treatment time is 20-25 min, 25-30 min, 30-40 min, 40-50 min or 50-60 min, and a flexible moisture regaining product is obtained; the temperature for carrying out the flexible moisture regaining treatment on the high-risk raw materials is 58-59 DEG C; the temperature for carrying out the flexible moisture regaining treatment on the normal raw materials is 62-65 DEG C; the flexible moisture regaining product is subjected to stacking fermentation treatment, the stacking fermentation treatment time is 10-35 days, the mold content in the stacking fermentation treatment process is lower than 10 < 6 > CFU / g, and a stacking fermentation product is obtained. And carrying out enhanced moisture regaining treatment on the stacked fermentation product to obtain an enhanced moisture regaining product. The purpose of reducing the mildew rate of finished cigarettes is achieved.

Description

Technical Field

[0001] This patent belongs to the field of cigar processing technology, specifically relating to a method for screening and processing cigar tobacco leaves. Background Technology

[0002] Cigar tobacco, as a natural agricultural product, possesses a unique flavor due to its high sugar, high protein, and rich organic matter content. However, this also makes it an ideal substrate for mold growth, making cigar tobacco prone to mold during storage. Furthermore, the fermentation process, requiring controlled temperature and humidity to promote intense biochemical reactions within the tobacco leaves, significantly increases the mold rate of the final cigarettes made from the fermented product.

[0003] Therefore, a new processing technology is urgently needed to reduce the mold rate of finished cigarettes. Summary of the Invention

[0004] The purpose of this patent is to provide a method for screening and processing cigar tobacco leaves to reduce the mold rate of finished cigar sticks.

[0005] To solve the above-mentioned technical problems, this patent adopts the following technical solution: A method for screening and processing cigar tobacco leaves, comprising the following steps: Step 1: Determine the initial mold content of the cigar tobacco leaves and screen and grade them according to the initial mold content. When the initial mold content is 10³-10 5 When CFU / g, cigar tobacco leaves are labeled as normal raw materials; When the initial mold content is greater than 10 5 At CFU / g, cigar tobacco leaves are marked as high-risk raw materials; Step 2: Perform flexible rehydration treatment on normal raw materials or high-risk raw materials. The flexible rehydration treatment time is 20-25 min, 25-30 min, 30-40 min, 40-50 min or 50-60 min to obtain flexible rehydrated products. The temperature for flexible rehydration treatment of high-risk raw materials is 58-59℃; The normal temperature for flexible rehydration treatment of raw materials is 62-65℃; The rehydrated product undergoes stack fermentation for 10-35 days, during which the mold content remains below 10%. 6 CFU / g, yielding stacked fermentation products; Step 3: The stacked fermentation product is subjected to enhanced rehydration treatment to obtain enhanced rehydration product. The enhanced rehydration product is used to prepare aerosol generation products. After 90 days of alcoholization, the mold rate of the finished product is less than 0.0050%.

[0006] Furthermore, in step 3, the time for enhanced rehydration treatment is 40-50 minutes or 50-60 minutes. The temperature for enhanced rehumidification treatment is 75-76℃, 76-77℃, 77-78℃, 78-79℃, or 79-80℃.

[0007] Furthermore, the vacuum degree of the enhanced rehumidification treatment is controlled at -0.09 to -0.095 MPa.

[0008] Furthermore, in step 2, the vacuum degree of the flexible rehydration treatment is controlled to be -0.08 to -0.09 MPa.

[0009] Furthermore, in step 2, the stacking fermentation process is carried out in a fermentation chamber; The temperature of the fermentation chamber is 28-30℃, 30-32℃, or 32-35℃.

[0010] Furthermore, the stacking fermentation process involves turning the stacks 2-3 times, 3-6 times, or 6-10 times.

[0011] Furthermore, the humidity in the fermentation chamber is 70-75% RH.

[0012] Furthermore, in step 2, water is input during the flexible rehydration process to achieve a moisture content of 15-16%, 16-18%, or 18-20% for the flexible rehydration product.

[0013] This patent further provides an aerosol-generated article comprising the enhanced rehydration product obtained by the above-described cigar tobacco screening and processing method.

[0014] Among them, aerosol-generating products are smoking products, with cigar tobacco leaves as the aerosol-forming matrix, which generate aerosols through heating that can be directly inhaled into the user's lungs through the user's mouth.

[0015] This patent provides a method for screening and processing cigar tobacco leaves. Instead of using traditional single indicators like moisture and temperature, mold content is used as a quantitative classification and control target for the pre-fermentation process. By grading and labeling the raw materials, different parameters for the pre-fermentation flexible rehydration treatment can be selected to reduce mold growth, ensuring that the mold content of the rehydrated product remains below 10% during the stacking fermentation process. 6 With CFU / g, combined with enhanced rehydration treatment after fermentation, the mold rate of the finished cigarettes after 90 days of aging is less than 0.0050%, successfully reducing the mold rate of the finished cigarettes. Attached Figure Description

[0016] The above content of this patent and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution.

[0017] Figure 1 This is a schematic diagram of the cigar tobacco leaf screening and processing method in this patent. Detailed Implementation

[0018] The detailed features and advantages of this patent are described below in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this patent and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this patent.

[0019] This specification also uses several compound terms to describe devices, components, equipment, etc. that include more than one function, or to assign additional functions to a corresponding device, component, equipment, etc. Those skilled in the art will understand that such compound terms can be implemented by a single or multiple devices, components, equipment, etc., as long as they are reasonable under the interpretation rules of this patent terminology.

[0020] It should be noted that in this specification, similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and interpreted in subsequent figures. In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined as having the following meanings: The terms “comprising” or “having” have the same meaning as “containing”, and also include other forms of the term, such as the gerund and singular forms in English, meaning including but not limited to, and not intended to exclude, for example, other elements, components, integers or steps. All other terms used herein for special definition are intended to have the general meaning understood by one of ordinary skill in the art, and in particular, meaning that one of ordinary skill in the art, upon reading the claims, specification and drawings of this patent, can directly and without doubt determine how the technical solution of this patent can be implemented.

[0021] Even if there are incomplete descriptions, omissions, or ambiguities in the grammar, words, punctuation, graphics, symbols, etc. of the claims, specification, and drawings of this patent, a person skilled in the art can still arrive at the only correct understanding by reading the claims, specification, and drawings as a whole without extensive reasoning or experimentation, and effectively exclude various incorrect interpretations that are not aimed at achieving the purpose of this patent.

[0022] Those skilled in the art would first choose to read the claims, specification, and drawings of this patent to reasonably interpret the terms; secondly, they would choose to refer to the relevant definitions in other documents published by the applicant before the filing date to reasonably interpret the terms; thirdly, they would choose the references cited in this patent to reasonably interpret the terms; and finally, they would choose to combine the technical dictionaries, technical manuals, reference books, textbooks, national or industry technical standards, etc., commonly used by those skilled in the art to reasonably interpret the terms.

[0023] All references cited in this application are incorporated herein by way of quotation, to the extent that they do not contradict the disclosure herein. It will be apparent to those skilled in the art that products (apparatus, components, devices, compounds, compositions, materials, etc.) and methods (processes, steps, conditions, parameters, equipment, and test methods, equipment, etc.) not specifically described herein can be applied to the implementation of the inventions fully disclosed herein without the need for excessive experimentation. This patent is intended to cover all functional equivalents known in the art of the methods, apparatus, apparatus components, materials, processes, and techniques specifically described herein. All cited references include: The following publications are included: Marks' Standard Handbook for Mechanical Engineers (11th edition and other editions prior to this patent application date), published by McGraw-Hill, Inc.; DeGarmo's Materials and Processes in Manufacturing (13th edition and other editions prior to this patent application date), published by Wiley; Machinery's Handbook (32nd edition and other editions prior to this patent application date), published by IndustrialPress Inc.; Mechanical Design Handbook (6th edition and other editions prior to this patent application date), edited by Cheng Daxian, published by Chemical Industry Press; and Modern Mechanical Design Handbook (6th edition and other editions prior to this patent application date), edited by Wen Bangchun, published by Machinery Industry Press.

[0024] This patent will now be described with reference to the accompanying drawings, in which similar reference numerals denote similar elements. While specific structures and arrangements are discussed, it should be understood that this is done merely for illustrative purposes. Those skilled in the art will recognize that other structures and arrangements can be used without departing from the spirit and scope of this patent. It will be clear to those skilled in the art that this patent can also be used in a variety of other applications.

[0025] Example 1

[0026] like Figure 1 As shown, this embodiment provides a method for screening and processing cigar tobacco leaves, including the following steps: Raw material warehousing: Domestic eggplant core tobacco leaves (origin: Yunnan). Due to improper storage, the initial mold content was determined to be 2.4 × 10⁻⁶ using the test sample method. 5 CFU / g, classified as high-risk raw material, with a moisture content of 16.2%.

[0027] Pre-fermentation flexible rehydration: Temperature maintained at 59℃, vacuum degree -0.082 MPa, time 25 minutes to prevent mold outbreak. During this time, external water mist was sprayed onto the tobacco leaves to maintain the moisture content of the flexibly rehydrated product at 18.6%, and the mold content after treatment was 2.1 × 10⁻⁶. 5 CFU / g.

[0028] Stack fermentation: Stack fermentation in a fermentation chamber (30±2℃, 72%RH) for 28 days, with close monitoring and turning the stack every 5 days. The mold content should be below 10% during the fermentation period. 6 CFU / g, moisture content 14.6%. Mold content peaked at 8.7 × 10⁻⁶ during stack fermentation. 5 CFU / g, but the dominant microorganism is Aspergillus oryzae.

[0029] Enhanced rehydration after fermentation: The temperature was raised to 80℃, the vacuum degree was -0.095 MPa, and the treatment was carried out continuously for 2 cycles (27 min per cycle) to ensure complete inactivation. The moisture content of the enhanced rehydration product after treatment was 15.5%.

[0030] The final mold content of the treated, rehydrated product was <10 CFU / g. The rehydrated product was used to prepare cigarettes using conventional methods and then aged according to the aging method disclosed in Chinese Patent CN103445289A. The rehydrated product was placed in oak barrels and aged at 70°F and 70% humidity. The cigars were periodically turned to ensure even aging; the interval depended on the ventilation of the oak barrels, and the space inside the barrels was at least twice the space of the cigars. After 90 days of aging, the finished cigarettes had a mold rate of 0.0041%. Although the initial risk was extremely high, the process effectively controlled the mold, achieving a flavor retention rate of 89%.

[0031] Furthermore, this patent establishes a precise, phased-control vacuum rehumidification process system that integrates bacterial preservation and fermentation promotion with sterilization and mold control. This system allows for the quantitative classification and control of mold content as a pre-fermentation process target, rather than relying solely on traditional indicators like moisture and temperature, in the two stages of "flexible bacterial preservation before fermentation" and "intensive sterilization after fermentation." By grading and labeling the raw materials, different parameters for the pre-fermentation flexible rehumidification treatment can be selected to reduce mold outbreaks, ensuring that the mold content of the rehumidified product remains below 10% during the stacking fermentation process. 6 With CFU / g, combined with enhanced rehydration treatment after fermentation, the mold rate of the finished cigarettes after 90 days of aging is less than 0.0050%, successfully reducing the mold rate of the finished cigarettes. Examples 2-3 are used to further illustrate this.

[0032] Example 2

[0033] like Figure 1 As shown, this embodiment provides a method for screening and processing cigar tobacco leaves, including the following steps: Raw material warehousing: Domestic eggplant core tobacco leaves (origin: Yunnan), the initial mold content was determined to be 8.2×10³ CFU / g using the test strip method, the grade was normal raw material, the moisture content was 14.5%, and the number was ZKHC-B.

[0034] Pre-fermentation flexible rehydration: temperature 62℃, vacuum degree -0.085 MPa, treatment time one cycle (each cycle 22 minutes, i.e., treatment time 22 minutes), during which external water mist is sprayed onto the tobacco leaves. Under a vacuum degree of -0.085 MPa, the boiling point of water drops to approximately 55-60℃. The finished flexible rehydrated tobacco leaves have an outlet temperature of 61℃, a moisture content of 17.2%, a mold content of 9.1×10³ CFU / g, and a tobacco brick looseness rate of 97.1%, and are designated as ZKHC-1.

[0035] Stack fermentation: The flexible rehydrated product ZKHC-1 was stacked and fermented in a fermentation chamber (30±2℃, 72%RH) for 28 days, with the stack turned 3 times. The mold content was below 10% during the fermentation period. 6 CFU / g. Mold content at the end of fermentation was 5.6 × 10⁻⁶. 4 CFU / g, Aspergillus spp. accounted for 91.3%, and the content of dihydroactinolone increased by 2.1 times, with the code DDFJ-A-1.

[0036] Post-fermentation enhanced rehydration: The stacked fermentation product DDFJ-A-1 was continuously treated for two cycles (20 min per cycle, i.e., a total treatment time of 40 minutes) at a temperature of 78℃ and a vacuum degree of -0.092 MPa. The treated enhanced rehydration product had a mold content of <10 CFU / g, a moisture content of 15.8%, and a loss rate of 8.7% for key aroma substances, and was designated ZKHC-A-1.

[0037] The rehydrated product was prepared into cigarettes using conventional methods and then aged according to the aging method disclosed in Chinese Patent CN103445289A. The rehydrated product was placed in oak barrels and aged at 70°F and 70% humidity. The cigars were periodically turned to ensure even aging; the interval depended on the ventilation of the oak barrels, and the space inside the barrels was at least twice the space of the cigars. After 90 days of aging, the finished cigarettes had a mold rate of 0.0038%, a viable bacteria kill rate >99.99%, achieving commercial sterility, and a sensory score of 92.5.

[0038] Example 3

[0039] The difference between this embodiment and Embodiment 2 is that the pre-fermentation rehydration treatment time is two cycles, including the following steps: Raw material warehousing: Domestic eggplant core tobacco leaves (origin: Yunnan), the initial mold content was determined to be 8.2×10³ CFU / g using the test strip method, the moisture content was 14.5%, the grade was normal raw material, and the number was ZKHC-B.

[0040] Flexible rehydration before fermentation: temperature 62℃, vacuum degree -0.085 MPa, treatment time 2 cycles (22 min per cycle, i.e., treatment time 44 minutes), during which external water mist is sprayed onto the tobacco leaves. Under a vacuum degree of -0.085 MPa, the boiling point of water drops to about 55-60℃. The flexible rehydration product after treatment is numbered ZKHC-2.

[0041] Stack fermentation: The flexible rehydrated product ZKHC-2 was stacked and fermented in a fermentation chamber (30±2℃, 72%RH) for 28 days, with the stack turned 3 times. The mold content was below 10% during the fermentation period. 6 CFU / g. The stacked fermentation product at the end of fermentation is designated as DDFJ-A-2.

[0042] Post-fermentation enhanced rehydration: The stacked fermentation product DDFJ-A-2 was treated continuously for two cycles (20 minutes per cycle, i.e., a total treatment time of 40 minutes) at a temperature of 78℃ and a vacuum of -0.092 MPa. The resulting enhanced rehydration product was designated ZKHC-A-2. Cigarettes were prepared using conventional methods from the enhanced rehydration product and then aged according to the aging method disclosed in Chinese Patent CN103445289A. The enhanced rehydration product was placed in oak barrels and aged at 70℃ and 70% humidity. The cigars were periodically turned to ensure even aging; the interval depended on the ventilation of the oak barrels, and the space inside the barrels was at least twice the space of the cigars. After 90 days of aging, the mold rate of the finished cigarettes was 0.0041%.

[0043] Comparative Example 1

[0044] The difference between this comparative example and Example 2 is that it uses a single high-temperature rehumidification process. Both before and after fermentation, the process is carried out at 78°C, a vacuum of -0.092 MPa, and for 40 minutes, without staged differentiated temperature and time control. Specifically, it includes the following steps: Raw material warehousing: Domestic eggplant core tobacco leaves (originating from Yunnan), the initial mold content was determined to be 8.2×10³ CFU / g using the test strip method, and the moisture content was 14.5%.

[0045] Pre-fermentation rehydration: Temperature 78℃, vacuum degree -0.092 MPa, continuous treatment for 2 cycles (20 min per cycle, i.e., treatment time is 40 minutes) to obtain pre-fermentation rehydrated product.

[0046] Stack fermentation: The pre-fermented product was stacked in a fermentation chamber (30±2℃, 72%RH) for 28 days, and the stack was turned 3 times to obtain the stack fermentation product.

[0047] Rehydration after fermentation: The stacked fermentation product was continuously treated at a temperature of 78℃ and a vacuum degree of -0.092 MPa for two cycles (20 min per cycle, i.e., a treatment time of 40 minutes) to obtain the rehydrated product after fermentation.

[0048] The rehydrated product after fermentation is processed into cigarettes using conventional methods and then aged according to the aging method disclosed in Chinese Patent CN103445289A. The rehydrated product is placed in an oak barrel and aged at 70 degrees Fahrenheit and 70% humidity. The cigars are turned periodically to ensure even aging; the interval depends on the ventilation of the oak barrel, and the space inside the barrel is at least twice the space of the cigars.

[0049] To further illustrate the advantages of this patent, the cigarettes prepared in Examples 2-3 and Comparative Example 1 were subjected to the following tests.

[0050] 1. Performance Testing

[0051] The performance test results of the cigarettes prepared in Example 2 and Comparative Example 1 are shown in Table 1.

[0052] Table 1: Performance Comparison of Cigarettes Prepared in Example 2 and Comparative Example 1

[0053] Comparative Example 1 uses a single high-temperature parameter (typically 75-85℃) in a traditional vacuum rehumidification process to completely kill microorganisms. However, this "one-size-fits-all" approach has the following drawbacks: Disruption of beneficial microbial communities: Excessive sterilization before fermentation will destroy essential fermentation microorganisms such as aroma-producing yeasts and cellulose-degrading bacteria on the surface of tobacco leaves, resulting in insufficient synthesis of flavor substances (such as phenylethanol and dihydroactinol) during subsequent fermentation, with an aroma loss rate of 15-25%. Unable to precisely control in stages: Traditional processes do not distinguish the differences in microbial function before and after fermentation, and adopt a "one-size-fits-all" high-temperature treatment, which can neither retain beneficial bacteria before fermentation nor achieve complete mold control after fermentation; It is impossible to make precise control based on the succession patterns of microbial communities before and after fermentation.

[0054] As can be seen from Table 1, this patent divides vacuum rehumidification into two stages: "flexible preservation of bacteria before fermentation" and "intensified sterilization after fermentation." This is more effective than the single high-temperature treatment mode of Comparative Example 1. It achieves the advantages of retaining beneficial bacteria and killing harmful bacteria. Furthermore, the flavor substance loss rate of the cigarette in Example 2 is less than or equal to 10% and the beneficial bacteria retention rate is greater than 85% compared to the product with enhanced rehumidification. The sensory evaluation of the cigarette is better, with a rich nutty and milky aroma.

[0055] 2. Flexible moisture regain cycle detection

[0056] Microbial community analysis, energy consumption statistics, and flavor substance retention rate comparison were performed on the products from each process node in Examples 2 and 3. The results are shown in Table 2.

[0057] Table 2: Comparison Table of Example 2 and Example 3

[0058] As shown in Table 2, Example 2, using a single-cycle pre-fermentation flexible rehydration treatment, significantly outperformed Example 3, which used a two-cycle pre-fermentation flexible rehydration treatment, in terms of retaining beneficial bacteria (survival rate >85%), reducing energy consumption (by 18%), and improving flavor retention (by 25%). Furthermore, the phenylethanol loss rate was <11%, and the dihydroactinol retention rate was >92%, consistent with the flavor substance protection mechanism. Conversely, using more than one cycle of pre-fermentation flexible rehydration treatment resulted in lower beneficial bacteria survival rates and flavor substance retention rates. Meanwhile, there was no significant difference in the mold growth rate of the finished cigarettes obtained from Examples 2 and 3, indicating equivalent mold control effects.

[0059] In this patent, the flexible rehydrated product retains beneficial bacteria, with the abundance of Saccharomyces maintained at 10-15%; it also activates functional bacteria, with the survival rate of essential fermentation microorganisms such as cellulose-degrading bacteria and aroma-producing yeasts exceeding 85%.

[0060] The proportion of Aspergillus in the stacking fermentation products naturally increased from 65% to over 90%; the content of the key flavor compound dihydroactinol increased by 2.1-3.2 times, and the phenylethanol retention rate was >85%.

[0061] The mold content of the enhanced rehydrated product was reduced to <10 CFU / g (below the detection limit), the viable bacteria kill rate was >99.99%, and the kill rate of Aspergillus montevidensis, a key mold-causing fungus, was >99.9%.

[0062] This patent establishes a precise, phased vacuum rehumidification process system that combines microbial preservation and fermentation promotion with sterilization and mold control. Through the intelligent linkage of microbial community succession patterns and process parameters, it achieves the technical goal of reducing the mold rate of cigar tobacco leaves by more than 98.5% and increasing the retention rate of key flavor substances by more than 30%.

[0063] Furthermore, during the stacking fermentation process, the proportion of Aspergillus microorganisms naturally evolved from 65% to over 90%. By intensifying rehydration and rapidly raising the temperature, the exposure time to high temperatures was reduced, resulting in a phenylethanol loss rate of <11% in the final intensified rehydration product. At the same time, vacuum control at each stage reduced the oxidation reaction throughout the process, resulting in a dihydroactinol retention rate of >92% in the intensified rehydration product. The final moisture content of the intensified rehydration product was 13-16%, avoiding excessive drying. The mold content was reduced to <10 CFU / g (below the detection limit), and the kill rate of Aspergillus montmorillonite, which is dominant in the fermented tobacco leaves, was >99.9%. Key mold-causing fungi such as Penicillium chrysogenum and Aspergillus polymorpha were completely inactivated, achieving commercial sterility and realizing the goal of "sterilization and mold control".

[0064] The finished cigarettes prepared from the enhanced rehydration product treated by this patent have a mold rate of ≤0.0055%, a flavor loss rate of ≤10%, and a sensory score of ≥90 points.

[0065] This patent proposes a dual-target synergistic mechanism of preserving bacteria and promoting fermentation, and sterilizing and controlling mold. Based on the isolation and identification of 799 mold strains and the study of the mold-causing properties of 40 high-content strains, it clarifies for the first time the functional temporality of the microbial community during the fermentation process of cigar tobacco leaves—beneficial bacteria such as aroma-producing yeasts and cellulose-degrading bacteria need to be retained before fermentation, and mold-causing bacteria such as Aspergillus and Penicillium need to be completely inactivated after fermentation.

[0066] The terms and expressions used in this specification are for illustrative purposes and not for limitation. Their use is not intended to exclude any equivalents of the features or portions thereof shown, but rather to facilitate the understanding that various modifications may be possible within the scope of this patent claim. Therefore, it should be understood that while this patent has been specifically disclosed through preferred embodiments, exemplary embodiments, and optional features, variations or modifications of the concepts disclosed herein may be adopted by those skilled in the art, and such variations and modifications are therefore considered to be within the scope of this patent as defined by the appended claims. The specific embodiments given in this specification are examples of useful embodiments of this patent, and it will be apparent to those skilled in the art that this patent can be implemented using many variations of the devices, device components, and method steps disclosed herein.

[0067] The foregoing description of specific embodiments fully discloses the general features of this patent, enabling others to easily modify and / or adapt such embodiments for various applications by applying knowledge within the scope of the art, without excessive experimentation or deviation from the general concept of this patent. Therefore, based on the teachings and guidance provided herein, it is intended that such modifications and alterations be included within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology used herein is for descriptive purposes and not intended to be limiting; thus, the wording or terminology in this specification will be interpreted by those skilled in the art based on the foregoing teachings and guidance.

[0068] Furthermore, the scope of this patent should not be limited to any of the exemplary embodiments described above, but only to the appended claims and their equivalents.

Claims

1. A method for screening and processing cigar tobacco leaves, characterized in that, Includes the following steps: Step 1: Determine the initial mold content of the cigar tobacco leaves, and then screen and grade them according to the initial mold content. When the initial mold content is 10³-10 5 When CFU / g, the cigar tobacco leaves are labeled as normal raw materials; When the initial mold content is greater than 10 5 At CFU / g, the cigar tobacco leaves are marked as high-risk raw materials; Step 2: Perform flexible rehydration treatment on the normal raw materials or the high-risk raw materials. The flexible rehydration treatment time is 20-25 min, 25-30 min, 30-40 min, 40-50 min or 50-60 min to obtain a flexible rehydrated product. The temperature at which the high-risk raw materials undergo the flexible rehydration treatment is 58-59°C. The temperature at which the normal raw materials undergo the flexible rehydration treatment is 62-65℃. The flexible rehydrated product undergoes a stacking fermentation process for 10-35 days, during which the mold content remains below 10%. 6 CFU / g, yielding stacked fermentation products; Step 3: The stacked fermentation product is subjected to enhanced rehydration treatment to obtain enhanced rehydration product. The enhanced rehydration product is used to prepare aerosol generation products. After 90 days of alcoholization, the mold rate of the finished product of the aerosol generation product is less than 0.0050%.

2. The method for screening and processing cigar tobacco leaves according to claim 1, characterized in that, In step 3, the duration of the enhanced rehydration treatment is 40-50 minutes or 50-60 minutes. The temperature for the enhanced rehydration treatment is 75-76℃, 76-77℃, 77-78℃, 78-79℃, or 79-80℃.

3. The method for screening and processing cigar tobacco leaves according to claim 2, characterized in that, The vacuum degree of the enhanced rehumidification treatment is controlled at -0.09 to -0.095 MPa.

4. The method for screening and processing cigar tobacco leaves according to claim 1, characterized in that, In step 2, the vacuum degree of the flexible rehumidification treatment is controlled to be -0.08 to -0.09 MPa.

5. The method for screening and processing cigar tobacco leaves according to claim 1, characterized in that, In step 2, the stacking fermentation process is carried out in a fermentation chamber; The temperature of the fermentation chamber is 28-30℃, 30-32℃, or 32-35℃.

6. The method for screening and processing cigar tobacco leaves according to claim 5, characterized in that, The stacking fermentation process involves turning the stack 2-3 times, 3-6 times, or 6-10 times.

7. The method for screening and processing cigar tobacco leaves according to claim 6, characterized in that, The humidity in the fermentation chamber is 70-75% RH.

8. The method for screening and processing cigar tobacco leaves according to claim 1, characterized in that, In step 2, water is input during the flexible rehydration process so that the moisture content of the flexible rehydration product is 15-16%, 16-18%, or 18-20%.

9. An aerosol-generating product, characterized in that, The aerosol-generated product comprises an enhanced rehydration product obtained by the screening and processing method of cigar tobacco leaves according to any one of claims 1-8.

Images