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Flue-curing method for flue-cured tobacco NC71 tobacco leaves

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: 2018-06-05
GUANGDONG BRANCH OF CHINA TOBACCO GENERAL +1
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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 for flue-cured tobacco NC71 tobacco leaves
  • Flue-curing method for flue-cured tobacco NC71 tobacco leaves
  • Flue-curing method for flue-cured tobacco NC71 tobacco leaves

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The invention discloses a method for curing tobacco leaves of flue-cured tobacco variety NC71. NC71 is obtained by planting bovine liver soil, and the tobacco leaf age in the middle part is 104 days. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.

[0038] Yellowing period:

[0039] (1) Fire temperature control: raise the temperature in the barn to 31.8°C at a rate of 1°C / 3h, control the wet bulb temperature to 30.0°C, and stabilize the temperature for 2h; the motor frequency changes to 30Hz, and the speed is 500r / min.

[0040] (2) Initial stage of yellowing: Raise the temperature in the barn to 33.5°C at a rate of 0.1°C / h, control the wet bulb temperature to 32.0°C, and stabilize the temperature for 30 hours; the frequency of the motor changes to 35Hz, and the speed is 720r / min.

[0041] (3) Middle stage of yellowing: Raise the temperature in the barn to 36.5°C at a rate of 0.1°C / h, control the wet bulb temperatu...

Embodiment 2

[0052] A method for curing tobacco leaves of flue-cured tobacco variety NC71. NC71 is obtained by planting bovine liver soil, and the age of lower tobacco leaves of NC71 is 55 days during curing. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.

[0053] Yellowing period:

[0054] (1) Fire temperature control: Raise the temperature in the barn to 32.0°C at a rate of 1°C / 3h, control the wet bulb temperature to 30.2°C, and stabilize the temperature for 2h; the motor frequency changes to 32Hz, and the speed is 480r / min.

[0055] (2) Initial stage of yellowing: Raise the temperature in the barn to 33.3°C at a rate of 0.1°C / h, control the wet bulb temperature to 31.9°C, and stabilize the temperature for 34 hours; the frequency of the motor changes to 37Hz, and the speed is 700r / min.

[0056] (3) In the middle stage of yellowing: raise the temperature in the barn to 36.7°C at a rate of 0.1°C / h, control the wet bulb temperature...

Embodiment 3

[0067] A method for curing tobacco leaves of flue-cured tobacco variety NC71. NC71 is obtained by planting bovine liver soil, and the age of the upper tobacco leaves of NC71 is 115 days during curing. The roasting process includes the yellowing period, the color fixing period and the gluten-drying period.

[0068] Yellowing period:

[0069] (1) Fire temperature control: Raise the temperature in the barn to 32.0°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.

[0070] (2) Initial stage of yellowing: Raise the temperature in the barn to 33.3°C at a rate of 0.1°C / h, control the wet bulb temperature to 32.1°C, and keep the temperature stable for 28 hours; the frequency of the motor changes to 33Hz, and the speed is 740r / min.

[0071] (3) Middle stage of yellowing: Raise the temperature in the barn to 36.3°C at a rate of 0.1°C / h, control the wet bulb temp...

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Abstract

The invention belongs to the technical field of tobacco processing, and particularly relates to a flue-curing method for flue-cured tobacco NC71 tobacco leaves. The method comprises the steps that beef liver soil is planted to obtain lower tobacco leaves, middle tobacco leaves and upper tobacco leaves of NC71 to be flue-cured in different curing barns separately, the temperature is increased slowly in the tobacco leaf yellowing period inside the curing barns, frequency conversion control is performed on a circulating fan adopted in different flue-curing stages of the yellowing period, the fixation period and the stem-drying period, and the whole flue-curing stage is divided into ten small stages; meanwhile, the temperature is increased at low speed in the yellowing period, and the temperature of the yellowing period is controlled to be 39 DEG C or below; the high and medium temperature yellowing steady temperature period is prolonged by 12 h, and the fixation middle and later period steady temperature period is prolonged by 12 h; finally, the NC71 obtained after flue-curing is superior in appearance and quality, chemical components inside the tobacco leaves can be coordinated, thetobacco leaf sensory evaluation quality 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 NC71. Background technique [0002] NC71 is a flue-cured tobacco variety, which was introduced from the United States-Brazilian Buffy Gold Seed Company by Yunnan Academy of Tobacco Agricultural Sciences and Yuxi China Tobacco Seed Co., Ltd. in 2009. On December 11, 2011, it passed the examination and approval of the Sixth National Tobacco Variety Approval Committee. The traits are stable, the plant type is tower-shaped in the southern tobacco area, and cylindrical in the northern tobacco area. The leaves are oblong, green in color, medium in stem and leaf angle, medium in thickness of the main vein, good in uniformity, and medium in field growth potential. Strong, with obvious layering and yellowing characteristics, and the field growth period is about 120 days. NC71 raw tobacco has good mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 王晓宾贺广生汪军李文才陈桢禄郭俊杰魏彬田君同陈泽鹏
Owner GUANGDONG BRANCH OF CHINA TOBACCO GENERAL
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