Accurate NC55 tobacco variety bulk curing process

Abstract

The invention discloses an accurate NC55 tobacco variety bulk curing process. According to the change characteristics of the appearance trait and inherent physiology and biochemistry of tobacco in the process of curing and in combination with the operation of the automatic control equipment of an intensive curing barn, bulk curing is divided into a tobacco yellowing stage, a tobacco wilting stage, a tobacco vein yellowing stage, a tobacco drying stage and a tobacco vein drying stage. The tobacco yellowing stage includes three temperature-increasing and temperature-keeping processes, each of the other stages includes a temperature-increasing and temperature-keeping process, seven steps corresponding to dry and wet bulb temperatures and the change in tobacco are formed, the dry and wet bulb temperatures need to strictly correspond to the change indexes of the tobacco, the temperature-keeping time is flexibly regulated in order to reach the change indexes of the tobacco, and the power of fire and the rotational speed of a fan are controlled according to the dry and wet bulb temperatures set by a temperature-humidity controller. The tobacco yellowing stage of the accurate NC55 tobacco variety bulk curing process adopts step-by-step temperature rise for yellowing, which accords with the physiological and biochemical change principle of tobacco curing, consequently, the maturity of cured tobacco can be effectively increased, the tobacco cannot be easily cured to turn green, and is rich in oil, aroma is remarkably increased, and the quality of tobacco is good.

Description

technical field [0001] The invention belongs to the technical field of flue-cured tobacco preparation, and in particular relates to an intensive and precise process for roasting fragrant tobacco leaves NC55. Background technique [0002] The variety of flue-cured tobacco is the material basis for the development of Chinese-style cigarette leaf tobacco and cigarette brands, and directly affects the stability and improvement of the quality of Chinese-style cigarette tobacco leaf and cigarette products. The single variety and the lack of characteristic varieties are extremely unsuitable for the domestic development of Chinese-style cigarettes for characteristic raw materials. In recent years, a lot of new varieties have been introduced and bred in our country, some of which are of good quality, but their promotion is difficult. The reason is that apart from the poor resistance of the varieties, it has a lot to do with the imperfect supporting technology. [0003] In 2009, Shan...

AI Technical Summary

Problems solved by technology

The single variety and the lack of characteristic varieties are extremely unsuitable for the domestic development of Chinese-style cigarettes. The demand for characteristic raw materials

In recent years, a lot of new varieties have been introduced and bred in our country, some of which are of good quality, but their promotion is difficult. The reason is that, in addition to the poor resistance of the varieties, it has a lot to do with the imperfect supporting technology

[0003] In 2009, Shandong Tobacco Company introduced a new variety of American flue-cured tobacco NC55. This variety performed well in the demonstration planting process, but lacked research on the supporting curing process. The inventor also tried to bake NC55 with the existing intensive curing barn technology. A new variety of flue-cured tobacco in the United States, but the following defects are found: First, due to the existing intensive curing process, the temperature of the dry bulb and wet bulb of the tobacco leaves is raised to the target value at one time during the sheet change period, resulting in poor maturity of the tobacco leaves after curing , Tobacco leaves are easy to roast green, poor oil content, bad aroma, which is not conducive to the transformation of tobacco leaves. Second, in the stage of dry sheet and dry tendon, the temperature settings of the upper, middle and lower leaves are the same, resulting in uneven roasting, which is not conducive to Dried tobacco leaves, resulting in poor quality tobacco leaves

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