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Flue-curing method of tobacco leaves of flue-cured tobacco variety NC89

A curing method and a technology for flue-cured tobacco varieties, which are applied in the fields of tobacco, tobacco preparation, application, etc., can solve the problems of reduced aroma, light color of tobacco leaves, reduced oil content, etc. Effect

Inactive Publication Date: 2017-05-31
GUANGDONG BRANCH OF CHINA TOBACCO GENERAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the popularization and application, it was found that a considerable part of the tobacco leaves after roasting in intensive barns were lighter in color, less oily, and less fragrant.

Method used

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  • Flue-curing method of tobacco leaves of flue-cured tobacco variety NC89
  • Flue-curing method of tobacco leaves of flue-cured tobacco variety NC89
  • Flue-curing method of tobacco leaves of flue-cured tobacco variety NC89

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Experimental program
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Effect test

Embodiment 1

[0038]The invention discloses a method for curing tobacco leaves of flue-cured tobacco variety NC89. NC89 is obtained by planting in sandy soil, and the age of tobacco leaves in the middle part is 104 days. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.

[0039] Yellowing period:

[0040] (1) Fire temperature control: raise the temperature in the barn to 35.0°C at a rate of 1°C / 3h, control the wet bulb temperature to 35.0°C, and stabilize the temperature for 2h; the motor frequency changes to 30Hz, and the speed is 500r / min.

[0041] (2) Initial stage of yellowing: Raise the temperature in the barn to 36.1°C at a rate of 0.1°C / h, control the wet bulb temperature to 35.3°C, and stabilize the temperature for 30 hours; the frequency of the motor changes to 35Hz, and the speed is 720r / min.

[0042] (3) Middle stage of yellowing: Raise the temperature in the barn to 37.6°C at a rate of 0.1°C / h, control the wet bulb tempera...

Embodiment 2

[0053] A method for curing tobacco leaves of flue-cured tobacco variety NC89. NC89 is obtained by planting in sandy soil, and the age of the lower tobacco leaves of NC89 is 55 days during curing. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.

[0054] Yellowing period:

[0055] (1) Fire temperature control: raise the temperature in the barn to 35.2°C at a rate of 1°C / 3h, control the wet bulb temperature to 28.2°C, and stabilize the temperature for 2h; the motor frequency changes to 32Hz, and the speed is 480r / min.

[0056] (2) Initial stage of yellowing: Raise the temperature in the barn to 36.2°C at a rate of 0.1°C / h, control the wet bulb temperature to 34.9°C, and stabilize the temperature for 34 hours; the frequency of the motor changes to 37Hz, and the speed is 700r / min.

[0057] (3) In the middle stage of yellowing: raise the temperature in the barn to 37.7°C at a rate of 0.1°C / h, control the wet bulb temperature...

Embodiment 3

[0068] A method for curing tobacco leaves of flue-cured tobacco variety NC89. NC89 is obtained by planting in sandy soil. The age of the upper tobacco leaves of NC89 is 115 days during curing. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.

[0069] Yellowing period:

[0070] (1) Fire temperature control: Raise the temperature in the barn to 34.8°C at a rate of 1°C / 3h, control the wet bulb temperature to 30.2°C, and stabilize the temperature for 2h; the frequency of the motor changes to 28Hz, and the speed is 520r / min.

[0071] (2) Initial stage of yellowing: Raise the temperature in the barn to 35.8°C at a rate of 0.1°C / h, control the wet bulb temperature to 35.3°C, and keep the temperature stable for 28 hours; the frequency of the motor changes to 33Hz, and the speed is 740r / min.

[0072] (3) In the middle stage of yellowing: raise the temperature in the barn to 37.3°C at a rate of 0.1°C / h, control the wet bulb tempe...

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Abstract

The invention belongs to the technical field of tobacco processing, and in particular relates to a flue-curing method of tobacco leaves of a flue-cured tobacco variety NC89. The flue-curing method comprises the following steps: separately flue-curing lower tobacco leaves, middle tobacco leaves and upper tobacco leaves of the NC89 obtained by planting in sandy soil in different flue-curing barns; slowly raising the temperature at a yellowing stage of the tobacco leaves in a flue-curing room; carrying out frequency-variable regulation and control by utilizing a circulating draught fan at different flue-curing phases including the yellowing stage, a leaf-drying stage and a stem drying stage, wherein the whole flue-curing phase is divided into 10 sections; meanwhile, slowly raising the temperature at the yellowing stage and controlling the temperature of the yellowing stage to be 39 DEG C or lower; prolonging middle-temperature and high-temperature yellowing stable temperature for 12h; prolonging stable temperature at middle and later stages of the leaf-drying stage for 12h; finally, flue-curing to obtain the NC89. The NC89 has high appearance quality; chemical components in the tobacco leaves can be coordinated; the sensory taste quality of the tobacco leaves is improved, and economic benefits are improved.

Description

technical field [0001] The invention belongs to the technical field of tobacco processing, and in particular relates to a method for curing tobacco leaves of flue-cured tobacco variety NC89. Background technique [0002] NC89 was bred by crossing 6855-2 and 6772 lines in North Carolina, USA in 1976. After being introduced into our country, it is mainly planted in the northern tobacco areas. The plant height is about 110 cm. The leaf shape is oblong, the waist leaf length is about 69 cm, the width is about 30 cm, and the stem circumference and pitch are moderate. The growth is slow in the early stage of emergence and field, and the growth is faster after the cluster. The field growth period is 105-117 days, and the number of effective leaves is 21-23 pieces. It is resistant to black shank, root rot and root-knot nematode, resistant to red spot and climate spot, and susceptible to mosaic disease. Moderate fertilizer tolerance, not drought tolerant, easy to bake. Suitable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 陈泽鹏
Owner GUANGDONG BRANCH OF CHINA TOBACCO GENERAL
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