Re-drying method for keeping aroma substances of tobacco leaves

Abstract

The invention discloses a re-drying method for keeping aroma substances of tobacco leaves. The re-drying method comprises the following steps: carrying out ultrasonic atomization pre-dampening treatment on the tobacco leaves; carrying out ultrasonic atomization vacuum moisture regaining treatment on the tobacco leaves; atomizing and moistening the tobacco leaves; threshing and air-separating the tobacco leaves; and carrying out microwave redrying treatment on the tobacco leaves. According to the re-drying method for keeping aroma substances of tobacco leaves, ultrasonic atomization pre-dampening is beneficial to reducing the subsequent dampening intensity and reducing the aroma loss; low temperature and high humidity are adopted for ultrasonic atomization vacuum moisture regaining to improve the humidifying effect, characteristic aroma substances of tobacco leaves are reserved, and tobacco leaf breakage is reduced; low-temperature redrying is achieved through microwave redrying, the redrying time is shortened, fragrant substance losses are small, leaf moisture losses are uniform, and tobacco leaf shrinking is reduced; and through the steps of ultrasonic atomization pre-moisture regaining, ultrasonic atomization vacuum moisture regaining, atomization leaf moistening and microwave drying and redrying, the loss of fragrant substances of tobacco leaves is reduced while the redrying processing effect is guaranteed, and the quality of the redried tobacco leaves is improved.

Description

technical field [0001] The invention relates to the technical field of redrying processing, in particular to a redrying method for maintaining the aroma substances of tobacco leaves. Background technique [0002] The purpose of the threshing and redrying process is to separate and redry the tobacco leaves and tobacco stems, and to deliver sheet tobacco raw materials for cigarette processing, which plays an important role in the shred formula and the quality of cigarette products. Therefore, threshing and redrying play a key role in controlling the quality of tobacco raw materials, and have become an important link in the production of cigarette industry. In the past, the re-baking process focused more on indicators such as the moisture content of the finished product and the crushing rate. By adopting a high-intensity processing mode and setting higher temperature parameters in each processing link, it was possible to ensure the moisture regain effect and moisten the leaves ...

AI Technical Summary

Problems solved by technology

At present, the re-baking and aroma-preserving process is mostly a low-intensity processing process. Although the aroma-preserving effect can be achieved by adjusting the re-baking temperature and other related parameters, it will lead to problems such as insufficient re-baking and excessive moisture in the finished product, and it is impossible to take into account the drying effect. and aroma preservation effect, still need to make some improvements in the re-baking process

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