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Tobacco leaf curing method and application

A curing method and technology of tobacco leaves, applied in the field of tobacco processing, can solve the problems of weak tobacco production, unclear reasons, and poor results

Active Publication Date: 2021-12-31
HUBEI TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although foreign countries have explored the formation mechanism of hanging ash in the early stage, domestic researchers have also enriched the "enzymatic browning reaction" of hanging ash smoke in recent years, and explained it in combination with the situation encountered in actual production, but in view of the production Due to the complexity of the causes of the formation of middle-hanging gray smoke, it is relatively weak to use foreign research conclusions in the 1940s to guide the current domestic tobacco production, resulting in unclear reasons, unclear strategies, and poor results in actual production guidance

Method used

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  • Tobacco leaf curing method and application
  • Tobacco leaf curing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Effects of different baking environments on the browning of tobacco leaves during the yellowing period

[0035] 1) Experimental design

[0036] Tobacco leaves with the same quality of fresh smoke are selected from the same field and baked in a small oven. According to the dry and wet bulb temperatures at different stages of the yellowing period during baking, the setting process is as follows:

[0037] Table 1 Temperature and humidity settings for each test treatment

[0038]

[0039] The temperature stabilization time of each stage is 24h, 24h, and 18h ​​respectively, and the heating rate is 0.5°C / h. The pre-withering operation method is to use intermittent ventilation and heat supply after loading the tobacco, maintain the temperature in the curing room at 30-34°C, and switch to normal heating and baking after 24 hours. After each treatment turns yellow to 90% yellow (yellow slices and blue veins), turn to the heat and carry out conventional baking.

[...

Embodiment 2

[0071] Example 2 Effects of different temperature and humidity environments on tobacco leaf browning in the early stage of color fixation

[0072] 1) Experimental design

[0073] Tobacco leaves with the same quality of fresh smoke are selected from the same field and baked in a small oven. According to the temperature and humidity in the early stage of color fixing, the temperature stabilization time of each stage is the same, both are 12h, and the heating rate is 0.33°C / h. The setting process is as follows:

[0074] Table 8 Temperature and humidity settings for each test treatment

[0075]

[0076]

[0077] The treatment process in other stages of each treatment group is the same, and the conventional process or the optimized process as mentioned above can be used for baking, and the different treatment groups are consistent. The relative humidity in the curing room in the early stage of color fixing was 56.53%, 56.01%, and 55.46%, respectively, with little difference...

Embodiment 3

[0109] Example 3 Effect of non-enzymatic browning on the content of aroma substances in tobacco leaves after dry flakes

[0110] 1) The test was carried out in Lichuan in 2018. The variety is Yunyan 87, and the upper leaves 13-16 that are prone to browning are selected as the test material. Tobacco leaves with the same quality of fresh smoke are selected from the same field and baked in a small oven. The specific process is as follows:

[0111] Table 15 Temperature and humidity settings for each test treatment

[0112]

[0113] 2) Measurement items and methods:

[0114] Determination of neutral aroma-inducing substances: metabolite extraction, take 100 μL of the liquid sample to be tested (0.1 mg tissue liquid nitrogen grinding) and place it in an EP tube, add 400 μL of 80% methanol aqueous solution (4 times the volume of methanol), vortex, and place Let stand at -20°C for 60min, centrifuge at 14000g, 4°C for 20min, take a certain amount of supernatant and put it in a 1....

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Abstract

The invention belongs to the technical field of tobacco treatment, and particularly relates to a tobacco leaf curing method and application. According to the method, the relationship between the change of substances in the tobacco leaves and the browning of the tobacco leaves under different curing conditions is explored, the key technology of tobacco leaf curing is further adjusted, the tobacco leaf aroma is improved while the loss of the tobacco leaves due to browning is reduced, and a scientific and effective curing scheme is provided for tobacco growers; meanwhile, an effective method for inhibiting browning of the tobacco leaves is explored, and a theoretical basis and effective measures are provided for regulating and controlling the browning reaction of the tobacco leaves in the curing process.

Description

technical field [0001] The invention belongs to the technical field of tobacco processing, and in particular relates to a tobacco leaf curing method and its application. Background technique [0002] The occurrence of tobacco browning will not only affect the appearance quality of tobacco leaves, but also reduce the internal quality of tobacco leaves, which will lead to the deterioration of industrial usability of tobacco leaves and the loss of economic benefits. Its regulation technology has been explored for a long time. [0003] Tobacco leaf curing is a key link in the production of flue-cured tobacco. It is a complex physiological and biochemical reaction process in which the environmental temperature and humidity, gas components, enzymes, microorganisms and internal components of tobacco leaves interact. The essence of tobacco leaf browning is actually the enzymatic browning reaction. Under normal conditions, polyphenol oxidase and phenolic substrates in tobacco leave...

Claims

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Application Information

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IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 孙光伟陈振国杨勇孙敬国郭青青李建平冯吉张鹏龙吴勇陈守文
Owner HUBEI TOBACCO SCI RES INST
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