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Method for improving curing quality of tobacco leaves affected by Cold Dew

A tobacco leaf quality technology, applied in the field of improving the curing quality of tobacco leaves damaged by cold dew, can solve the problems of poor quality fresh tobacco, difficulty in curing, and inadequate implementation of cultivation techniques, etc.

Active Publication Date: 2016-02-24
YUNNAN ACAD OF TOBACCO AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tobacco leaves in the field, due to climate, soil factors, and inadequate cultivation techniques, will cause some difficult-to-bake, poor-quality fresh tobacco, which will affect the income of tobacco farmers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] ——Roasting of tobacco leaves damaged by cold dew of Yunyan 87 variety

[0034] (1) Harvesting tobacco leaves: Harvesting tobacco leaves that have white tendons and most of the down hairs fall off and turn pale yellow.

[0035] (2) Tobacco leaf charging: the density of smoke in the barn is 42kg / m 3 , Fill the barn with smoke to 95% of the volume, and pack it properly.

[0036] (3) Tobacco leaf curing: A low-temperature and lower-limit low-humidity yellowing and flat-temperature drying baking process is adopted, which specifically includes the preheating stage, yellowing stage, color-fixing stage, and gluten-drying stage.

[0037] Preheating stage: After starting the fire, increase the temperature of the dry bulb from the natural temperature to 29°C at a heating rate of 1°C / 1.5h, keep the wet bulb temperature at 26°C, and roast until the bottom tobacco leaves begin to soften and the tip of the leaf is slightly yellow .

[0038] Yellowing stage: At the initial stage of ...

Embodiment 2

[0043] ——Toasting of tobacco leaves damaged by cold dew in K326 variety

[0044] (1) Harvesting tobacco leaves: Harvesting tobacco leaves that have white tendons and most of the down hairs fall off and turn pale yellow.

[0045] (2) Tobacco leaf charging: the density of smoke in the barn is 43kg / m 3 , Fill the barn with smoke to 97% of the volume, and pack it properly.

[0046] (3) Tobacco leaf curing: A low-temperature and lower-limit low-humidity yellowing and flat-temperature drying baking process is adopted, which specifically includes the preheating stage, yellowing stage, color-fixing stage, and gluten-drying stage.

[0047] Preheating stage: After starting the fire, increase the temperature of the dry bulb from the natural temperature to 29°C at a heating rate of 1°C / 1.5h, keep the wet bulb temperature at 27°C, and roast until the bottom tobacco leaves become soft and the tips of the leaves are slightly yellow .

[0048] Yellowing stage: At the initial stage of yello...

Embodiment 3

[0053] ——Toasting of tobacco leaves damaged by cold dew of Yunyan 97 variety

[0054] (1) Harvesting tobacco leaves: Harvesting tobacco leaves that have white tendons and most of the down hairs fall off and turn pale yellow.

[0055] (2) Tobacco leaf charging: the density of smoke in the barn is 45kg / m 3 , Fill the barn with smoke to 98% of the volume, and pack it properly.

[0056] (3) Tobacco leaf curing: A low-temperature and lower-limit low-humidity yellowing and flat-temperature drying baking process is adopted, which specifically includes the preheating stage, yellowing stage, color-fixing stage, and gluten-drying stage.

[0057] Preheating stage: After starting the fire, raise the dry bulb temperature from the natural temperature to 29°C at a heating rate of 1°C / 2h, keep the wet bulb temperature at 27°C, and roast until the bottom tobacco leaves begin to soften and the leaf tips are slightly yellow.

[0058] Yellowing stage: At the initial stage of yellowing, increase...

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Abstract

The invention discloses a method for improving the curing quality of tobacco leaves affected by Cold Dew. In the method, tobacco leaves with whitened tobacco stems and most setae falling off as well as faint yellow color are adopted, the tobacco loading density inside a curing barn is 42-45 kg / m<3>, and the tobacco loading volume at least occupies 95% of the total volume of the curing barn; the curing process with low temperature and limited low-humidity yellowing as well as the room-temperature drying is adopted, and specifically comprises a preheating stage, a yellowing stage, a color setting stage and a stem drying stage, and curing is carried out till the main veins of the tobacco leaves in the whole curing barn become dry, wherein the temperature rising speed in each curing stage is controlled to be 1 DEG C / 1-2 h. The method is particularly suitable for the tobacco leaves planted in a delayed manner due to various reasons, and the tobacco leaves growing in tobacco areas with high altitude, low temperature and long growth period of flue-cured tobaccos, wherein the harvesting and curing of the tobacco leaves are finished during the Autumnal Equinox and the Frost's Descent, the material metabolism, synthesis and degrading of the substances inside the tobacco leaves become slow, the leaves become thick, the tissues are coarse, and the fading and yellowing are slow. The method is simple and easy to operate, the curing quality of the tobacco leaves affected by cold dews can be improved, the loss is reduced, and the income of the tobacco growers is increased.

Description

technical field [0001] The invention belongs to the technical field of tobacco leaf curing, and in particular relates to a method for improving the curing quality of tobacco leaves damaged by cold dew. Background technique [0002] Tobacco curing is the key to determine the quality of tobacco leaves. Scientific roasting can produce high-quality tobacco leaves to meet the needs of cigarette formulations. Tobacco leaves in the field, due to climate, soil factors, and inadequate cultivation techniques, will cause some difficult-to-cure and poor-quality fresh tobacco, which will affect the income of tobacco farmers. [0003] Tobacco leaves affected by cold dew are planted late due to various reasons or in areas with high altitude, low temperature and long growing season of flue-cured tobacco. As the temperature drops after autumn and the air humidity decreases, the metabolism, synthesis, and decomposition of substances in the tobacco leaves become slow. As a result, the leave...

Claims

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Application Information

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IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 黄维崔国民赵高坤
Owner YUNNAN ACAD OF TOBACCO AGRI SCI
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