Curing process of flue-cured tobacco

Abstract

The invention discloses a curing process of flue-cured tobacco and belongs to the technical field of the curing technology of tobacco leaves. According to the curing characteristic of the leaves of the zhongyan 103, the temperature and the humidity, the curing process of tobacco leaf of the invention divides the whole process of the curing of tobacco leaves into five steps, namely firing-up and temperature control, yellowing of tobacco leaves, transition, colour setting of tobacco leaves and stem-drying of tobacco leaves, wherein the five steps have the three stages of yellowing stage, colour setting stage and stem-dring stage, thus the quality of the cured tobacco leaves is greatly increased. The curing process has high maneuverability and can obviously increase the tobacco leaf quality and high-class leaf ratio of flue-cured tobacco and reduce the rate of green tobacco; the ratios of high-class leaf and middle-class leaf in the cured tobacco leaves are increased by more than 10.65%, the ratio of the tobacco leaf with different colors is reduced by more than 1.67%, the ratio of tobacco leaves of which upper and middle parts are green is reduced by more than 7%; the output value is increased by more than 11.75%; and the cured tobacco leaves are bright-coloured and oily, the chemical composition tends to be coordinated, the sugar-nicotine ratio, the nitrogen-nicotine ratio and the total nicotine all meet the chemical composition quality evaluation standard of the crude tobacco; and the style characteristic of the zhongyan 103 is fully displayed, and the incomes of tobacco farmers are increased.

Description

technical field

[0001] The invention relates to a curing process of flue-cured tobacco, in particular to a curing process of Zhongyan 103 as a type of flue-cured tobacco. Background technique

[0002] Curing is one of the important measures of tobacco leaf production. The fresh tobacco leaves harvested in the field must be roasted to reflect its excellent quality and high commodity value. At present, the flue-cured tobacco curing process is generally a three-stage curing process, that is, the curing process is divided into three stages: yellowing, color fixing, and tendon drying. Temperature 36~38℃, yellowing complete temperature 40~42℃, wet bulb temperature 1~4℃ lower than dry bulb temperature; color fixing stage: dry bulb temperature 54~55℃, wet bulb temperature 38~40℃; Stage: Dry bulb temperature is 67-68°C, wet bulb temperature is 40-42°C, that is, according to the change requirements of tobacco leaves in each stage, the temperature and humidity indicators are stipulate...