Baking method capable of improving softness of upper tobacco of flue-cured tobacco

Abstract

The invention discloses a baking method capable of improving the softness of upper tobacco of flue-cured tobacco. According to the baking method, on the basis of reasonable tobacco loading and baking,at the earlier stage of yellowing, the temperature of a dry bulb and the temperature of a wet bulb synchronously rise to 36 DEG C, thus the synchronous preheating of all the flue-cured tobacco is realized, at the middle stage of yellowing, when the temperature is 39 DEG C, a fan is started for alternately carrying out internal circulation and internal and external circulation I repeatedly, so that the temperature of the wet bulb repeatedly rises to 39 DEG C and falls to 34 DEG C, thus tobacco histocytes expand with heat and contract with cold repeatedly, then the moisturizing environment forbaking is effectively created, the effective oily reaction time is guaranteed, the proper preheating at the earlier stage of yellowing of the tobacco is guaranteed, withering and branch vein softeningat the middle stage of yellowing are realized, the complete collapse and main vein softening at the later stage of yellowing are realized, and the water loss of tobacco yellowing is harmonious. At the fixation stage, the shrinking and rolling of the tobacco are promoted, and the formation of black brown tiny spots due to overfast water removal of the tobacco caused by temperature rise at the earlier stage of fixation is reduced. The baking method is strong in operability, and is scientific and practical, the water loss drying process for tobacco yellowing is harmonious and reasonable, the shrinkage and rolling of the upper baked tobacco are obvious, the porosity and softness of the leaves are obviously improved, and the integral baking quality is effectively improved.

Description

technical field [0001] The invention relates to the field of tobacco leaf curing and modulation, in particular to a method for curing tobacco leaves in the upper part of an air-flow descending intensive curing barn in the southeast tobacco area. Background technique [0002] The tobacco leaves in the upper part of the southeast tobacco area in my country are full of smoke, full of aroma, rough, dry and irritating, and have high application potential in low-tar cigarette formulations. However, in recent years, the quality problems of the upper tobacco leaves have become more and more prominent. The outstanding performance is that the leaves of the upper tobacco leaves are thicker after curing, the structure is not loose, the proportion of stiff tobacco is higher, and the softness and tension are slightly insufficient. The main reason is: the existing intensive curing Paying attention to yellowing and dehydration coordination is not enough, high temperature and fast baking can...

AI Technical Summary

Problems solved by technology

In addition, when the upper leaves are roasted, if the tobacco leaves lose water in the yellowing stage, it will easily cause the temperature to rise too fast and dehumidify in the early stage of color fixation, resulting in ash, which will also have a negative impact on the appearance and internal quality of the upper leaves.

[0003] The invention patent "A method of harvesting and roasting in dense barns in rainy and smokey areas (ZL201410082301.3)" has the ability to coordinate the yellowing and water loss of whole-cured tobacco leaves, and significantly reduce the situation of green roasting in the upper layer and roasting in the lower layer. The quality is obviously improved, but there is also a situation that the structure of the upper part of the tobacco leaf is slightly less loose after curing

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