Differential temperature circulating type stacking fermentation method for cigar tobacco leaves

Abstract

The invention discloses a differential temperature circulation type stacking fermentation method for cigar tobacco leaves, which effectively improves the maturity of the cigar tobacco leaves by controlling the temperature and humidity of different stages, and reduces the miscellaneous gas and the loss of aroma substances. According to the method, by accurately regulating and controlling the fermentation environment, the specific aroma of the cigar tobacco leaves is successfully reserved, and the dual purposes of aroma enhancement and impurity removal are achieved. The fermentation method is not influenced by natural conditions such as temperature fluctuation and humidity change, so that the stability of the fermentation process and the consistency of results are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco processing, and in particular to a cigar tobacco leaf differential temperature circulation type stacking fermentation method. Background Art

[0002] Cigars are a type of tobacco product made from sun-dried tobacco leaves. After agricultural production, cigar tobacco leaves usually need to undergo fermentation, a step that is crucial to improving the quality of tobacco leaves. The fermentation process can improve the intrinsic maturity of tobacco leaves, increase the conversion of aroma substances, and reduce impurities and irritation, thus giving cigars a unique flavor and quality.

[0003] At present, the fermentation of cigar tobacco leaves mainly adopts the method of pile fermentation, which has been widely used in the industry due to its simple operation and significant effect. Stack fermentation promotes the transformation of substances inside tobacco leaves and improves their sensory characteristics through the action of natural microorganisms.

[0004] However, in industrial production, due to the specific requirements for raw material properties, the traditional natural stacking fermentation method often fails to meet the precise product formulation requirements. With the advancement of technology and the pursuit of higher quality, the industry needs to explore more sophisticated and controllable fermentation technologies to meet the needs of specific products. Summary of the invention

[0005] The purpose of the present invention is to provide a cigar tobacco leaf differential temperature circulation stacking fermentation method in order to solve the above-mentioned problems. The differential temperature circulation stacking fermentation method of the present invention can effectively improve the maturity of cigar tobacco leaves while reducing the loss of aroma substances. The method is not affected by natural factors, the results are stable, and the quality is reliable.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A cigar tobacco leaf differential temperature circulation stacking fermentation method comprises the following steps:

[0008] Step 1, preparation of tobacco leaf raw materials: piling up cigar tobacco leaf raw materials that have been rehumidified to a suitable moisture content into a tobacco pile of a certain volume;

[0009] Step 2, low-temperature fermentation: adjust the fermentation temperature in the low-temperature fermentation room to 35±2°C, set the humidity to 75±3%, move the raw materials to be fermented in step 1 to the fermentation room in step 2, and the fermentation time is 5-20 days;

[0010] Step 3, medium temperature fermentation: adjust the medium temperature fermentation temperature to 40±2°C, the ambient humidity to 80±5%, adjust the moisture content of the raw materials after the low temperature fermentation in step 2 to 25-30%, move them to the medium temperature fermentation room in step 3 after moisture regain, and the fermentation time is 10-15 days;

[0011] Step 4, high temperature fermentation: adjust the temperature of the high temperature fermentation room to 45±2°C, the ambient humidity to 85±5%, adjust the moisture of the tobacco leaves after fermentation in step 3 to 25-30%, and move them to the high temperature fermentation room in step 4 after returning to the morning, and the fermentation time is 5-15 days;

[0012] Step 5, medium temperature aroma fixation: adjust the moisture content of the tobacco leaves that have been fermented in step 4 to 25-30%, move them to the medium temperature fermentation room in step 3 after moisture regain, and ferment them for 5-10 days; this process is used to solidify the aroma substances produced by the fermentation of the cigar raw materials, while maintaining the fermentation effect and reducing the loss of the aroma substances.

[0013] Step 6, low temperature aroma lock: adjust the moisture of the tobacco leaves after fermentation in step 5 to 25-30%, move them to the low temperature fermentation room in step 2 after moisture rehydration, and ferment for 5-10 days. This process is called aroma lock, which effectively fixes the aroma substances produced by the fermented cigar tobacco leaves.

[0014] A further solution is that in step 1, the initial moisture content of the cigar tobacco raw material is controlled at 30%-35%.

[0015] A further solution is that in step 1, the cigarette stack is 1.5-2m long, 1.5-2m wide and 1-1.5m high.

[0016] Temperature and humidity control of the present invention: During the fermentation process, precise control of temperature and humidity is the key to ensuring the fermentation effect. The alternating use of low temperature, medium temperature and high temperature, as well as the adjustment of humidity at different stages, promotes the generation and locking of aroma substances in tobacco leaves.

[0017] The fermentation sequence of the present invention: the sequence of differential temperature cycle fermentation is: low temperature fermentation → medium temperature fermentation → high temperature fermentation → medium temperature fermentation → low temperature fermentation. This sequence ensures the effective generation and locking of aroma substances while maintaining the quality of tobacco leaves.

[0018] The aroma locking stage of the present invention: after high-temperature fermentation, the aroma substances in the tobacco leaves are effectively locked through medium-temperature and low-temperature cyclic fermentation, namely steps 5 and 6, to avoid the loss of aroma and ensure the stability of the fermentation effect.

[0019] The beneficial effects of the present invention are:

[0020] The present invention proposes a differential temperature circulation stacking fermentation method, which aims to effectively improve the maturity of cigar tobacco leaves by controlling the temperature and humidity at different stages, while reducing impurities and reducing the loss of aroma substances. This method successfully retains the unique aroma of cigar tobacco leaves by accurately controlling the fermentation environment, achieving the dual goals of increasing aroma and removing impurities.

[0021] Compared with the traditional natural fermentation method, the fermentation method of the present invention is not affected by natural conditions such as temperature fluctuations, humidity changes, etc., thereby ensuring the stability of the fermentation process and the consistency of the results. The stability and reliability of this method provides a more controllable and efficient processing method for the production of cigar tobacco leaves, which helps to improve the quality and market competitiveness of the final product. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] Embodiment 1:

[0024] Step 1, taking 100 kg of upper cigar tobacco raw materials, the cigar tobacco raw materials that have been rehumidified to a suitable moisture content (the initial moisture content of the raw materials is preferably 30%-35%) are piled into a cigarette stack with a length of 2m, a width of 2m, and a height of 1.5m;

[0025] Step 2, adjusting the fermentation temperature in the low-temperature fermentation room to 35±2°C, setting the humidity to 75±3%, moving the raw materials to be fermented in step 1 to the fermentation room in step 2, and the fermentation time is 5 days;

[0026] Step 3, adjusting the medium temperature fermentation temperature to 40±2°C, the ambient humidity to 80±5%, adjusting the moisture content of the raw materials after the low temperature fermentation in step 2 to 25-30%, and moving them to the medium temperature fermentation room in step 3 after rehumidification, and the fermentation time is 12 days;

[0027] Step 4, adjusting the temperature of the high temperature fermentation room to 45±2°C, the ambient humidity to 85±5%, adjusting the moisture of the tobacco leaves after fermentation in step 3 to 25-30%, and moving them to the high temperature fermentation room in step 4 after returning to the morning, and the fermentation time is 13 days;

[0028] Step 5, adjusting the moisture content of the tobacco leaves after fermentation in step 4 to 25-30%, and moving them to the medium-temperature fermentation room in step 3 after returning to the morning, and the fermentation time is 5 days. This stage can effectively help the cigar raw materials solidify the aroma substances produced by fermentation, while maintaining the fermentation effect and reducing the loss of aroma substances.

[0029] Step 6, adjust the moisture of the tobacco leaves after fermentation in step 5 to 25-30%, and move them to the low-temperature fermentation room in step 2 after returning to the morning. The fermentation time is 5 days. This process is called aroma locking, which effectively fixes the aroma substances produced by the fermented cigar tobacco leaves.

[0030] The quality changes of tobacco leaves should be strictly monitored during the fermentation process. When the quality of tobacco leaves reaches the requirements, the fermentation is completed and the next process is carried out.

[0031] Table 1 Effect of differential temperature cycle fermentation on the quality of fermented tobacco leaves

[0032]

[0033] Implementation Case 2:

[0034] Step 1, taking 100 kg of cigar tobacco raw materials from the middle part, and piling the cigar tobacco raw materials that have been rehumidified to a suitable moisture content (the initial moisture content of the raw materials is preferably 30%-35%) into a cigarette pile with a length of 2m, a width of 2m, and a height of 1.5m;

[0035] Step 2, adjusting the fermentation temperature in the low-temperature fermentation room to 35±2°C, setting the humidity to 75±3%, moving the raw materials to be fermented in step 1 to the fermentation room in step 2, and the fermentation time is 5 days;

[0036] Step 3, adjusting the medium temperature fermentation temperature to 40±2°C, the ambient humidity to 80±5%, adjusting the moisture content of the raw materials after the low temperature fermentation in step 2 to 25-30%, and moving them to the medium temperature fermentation room in step 3 after moisture regain, and the fermentation time is 10 days;

[0037] Step 4: Adjust the temperature of the high temperature fermentation room to 45±2℃, the ambient humidity to 85±5%, adjust the moisture of the tobacco leaves after fermentation in step 3 to 25-30%, and move them to the high temperature fermentation room in step 4 after returning to the morning. The fermentation time is 8 days.

[0038] Step 5, adjusting the moisture content of the tobacco leaves after fermentation in step 4 to 25-30%, and moving them to the medium-temperature fermentation room in step 3 after returning to the morning, and the fermentation time is 5 days. This stage can effectively help the cigar raw materials solidify the aroma substances produced by fermentation, while maintaining the fermentation effect and reducing the loss of aroma substances.

[0039] Step 6, adjust the moisture of the tobacco leaves after fermentation in step 5 to 25-30%, and move them to the low-temperature fermentation room in step 2 after returning to the morning. The fermentation time is 5 days. This process is called aroma locking, which effectively fixes the aroma substances produced by the fermented cigar tobacco leaves.

[0040] The quality changes of tobacco leaves should be strictly monitored during the fermentation process. When the quality of tobacco leaves reaches the requirements, the fermentation is completed and the next process is carried out.

[0041] Table 2 Effect of differential temperature circulation fermentation on the quality of fermented tobacco leaves

[0042]

[0043] According to the test results of the implementation case, the present invention shows a significant improvement effect on the treatment of domestic cigar tobacco raw materials. Specifically, the tobacco treated by the method of the present invention has a significant improvement in aroma characteristics, and compared with the untreated raw tobacco, the impurity content of the tobacco is reduced, and the combustion performance is also improved to a certain extent.

[0044] In summary, the present invention can not only effectively maintain the aroma characteristics of tobacco leaves during the stacking fermentation process, but also reduce the impurity content, thereby improving the overall quality of tobacco leaves. In addition, the present invention also helps to shorten the fermentation cycle and improve the intrinsic quality of tobacco leaf production, which also improves the efficiency of tobacco leaf production to a certain extent.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further explain various possible combinations. In addition, the various different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A cigar tobacco leaf differential temperature circulation stacking fermentation method, characterized in that: The following steps are involved: Step 1, preparation of tobacco leaf raw materials: piling up cigar tobacco leaf raw materials that have been rehumidified to a suitable moisture content into a tobacco pile of a certain volume; Step 2, low-temperature fermentation: adjust the fermentation temperature in the low-temperature fermentation room to 35±2°C, set the humidity to 75±3%, move the raw materials to be fermented in step 1 to the fermentation room in step 2, and the fermentation time is 5-20 days; Step 3, medium temperature fermentation: adjust the medium temperature fermentation temperature to 40±2°C, the ambient humidity to 80±5%, adjust the moisture content of the raw materials after the low temperature fermentation in step 2 to 25-30%, move them to the medium temperature fermentation room in step 3 after moisture regain, and the fermentation time is 10-15 days; Step 4, high temperature fermentation: adjust the temperature of the high temperature fermentation room to 45±2°C, the ambient humidity to 85±5%, adjust the moisture of the tobacco leaves after fermentation in step 3 to 25-30%, and move them to the high temperature fermentation room in step 4 after returning to the morning, and the fermentation time is 5-15 days; Step 5, medium temperature fixation: adjust the moisture of the tobacco leaves after fermentation in step 4 to 25-30%, move them to the medium temperature fermentation room in step 3 after moisture regain, and ferment for 5-10 days; Step 6, locking aroma at low temperature: adjust the moisture of the tobacco leaves that have finished fermentation in step 5 to 25-30%, and move them to the low-temperature fermentation room in step 2 after rehumidification. The fermentation time is 5-10 days.

2. The cigar tobacco leaf differential temperature circulation stacking fermentation method according to claim 1, characterized in that: In step 1, the initial moisture content of the cigar tobacco raw material is controlled at 30%-35%.

3. The cigar tobacco leaf differential temperature circulation stacking fermentation method according to claim 1, characterized in that: In the step 1, the length of the cigarette stack is 1.5-2m, the width is 1.5-2m, and the height is 1-1.5m.

4. The cigar tobacco leaf differential temperature circulation stacking fermentation method according to claim 1, characterized in that: The step 5 is used to solidify the aroma substances produced by the fermentation of the cigar raw materials, thereby maintaining the fermentation effect and reducing the loss of the aroma substances.

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