A four-step flue-cured tobacco method

Abstract

The invention relates to the technical field of flue-cured tobacco preparation, in particular to a four-step flue-cured tobacco method. Including the following steps: during the yellow film period: after ignition, increase the dry bulb temperature to 39-40 °C, and the wet bulb temperature to 38-39 °C, turn on the circulating fan and stabilize the temperature; adjust the wet bulb temperature to 34-36 °C, and the dry bulb temperature is not Change, adjust the rotation speed of the circulating fan and stabilize the temperature; yellow tendon period: increase the dry bulb temperature to 42~44℃, and the wet bulb temperature will remain unchanged and stabilized; increase the dry bulb temperature to 44~46℃, the wet bulb temperature will remain unchanged and stabilize the temperature; dry film stage: raise the dry bulb temperature to 53-55°C, and adjust the wet bulb temperature to 38-39°C; dry gluten stage: raise the dry bulb temperature to 64-66°C, and adjust the wet bulb temperature to 40°C ~41℃, keep the temperature steady until the main veins of the tobacco leaves are completely dry. The invention helps to improve the controllability and operability of the degree of yellowing and water loss during the preparation of tobacco leaves, and helps to improve the tissue structure of the cured tobacco leaves, so that the cured tobacco leaves are softer and looser.

Description

technical field [0001] The invention relates to the technical field of flue-cured tobacco preparation, in particular to a four-step flue-cured tobacco method. Background technique [0002] In the production of flue-cured tobacco, curing is the last important link in determining the yield and quality of tobacco leaves, and it is also the weakest link in the production of tobacco leaves in my country, which directly affects the sustainable development of tobacco leaves in China. The curing quality of tobacco leaves is mainly restricted by the quality of fresh tobacco leaves, curing equipment and curing technology. Tobacco industry companies' demand for raw materials has changed from "yellow fresh and clean" to "yellow bright and soft". At present, there are mainly two kinds of roasting equipment in my country: intensive roasting house and ordinary roasting house. In recent years, intensive roasting house has been widely promoted. The phenomenon that tobacco leaves are stiff a...

AI Technical Summary

Problems solved by technology

The phenomenon of stiff and green tobacco leaves after curing is a new problem after the popularization of intensive curing barns, which has a certain impact on the quality of tobacco leaves

The yellowing period and the early stage of color fixation have a greater impact on the quality and quality of the tobacco leaves after curing. The existing three-stage curing process includes three periods: the yellowing period, the color fixation period, and the tendon drying period. In the early stage of color fixation, the coordination between yellowing and dehydration of tobacco leaves is the key to controlling greenness and quality of tobacco leaves. Excessive yellowing and too little dehydration will cause tobacco leaves to hang ash, steam slices or even roast black, and insufficient yellowing and excessive dehydration Many tobacco leaves are easy to roast green

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