Low-temperature Microwave Vacuum Drying Technology of Shredded Tobacco

Abstract

The invention relates to a low-temperature microwave vacuum drying process for tobacco shreds and belongs to the field of processing of the tobacco shreds. The process comprises the following step of: after carrying out moisture regaining, moisture balancing and low-temperature treatment on the tobacco shreds, feeding the tobacco shreds into vacuum drying equipment to be dried so as to obtain tobacco shred finished products with the moisture content of 11.5 percent to 13.5 percent. The drying process is carried out under the conditions of a vacuum pressure of 200Pa to 30kPa, a temperature of 0 DEG C to 70 DEG C and higher moisture content of 30 percent to 70 percent of the tobacco shreds, so that not only color, aroma and taste of the tobacco shreds are maintained, but also a certain filling value is improved. Moreover, the low-temperature microwave vacuum drying process for the tobacco shreds has low tobacco damage ratio and processing resistance performance. Odor and foreign flavor are obviously decreased.

Description

technical field [0001] The invention relates to a shredded tobacco drying process, in particular to a low-temperature microwave vacuum drying technology for shredded tobacco, which belongs to the field of shredded tobacco processing. Background technique [0002] With the development of the tobacco industry, the processing requirements of tobacco raw materials are also constantly increasing, and low-temperature drying of shredded tobacco has become an effective method. It can not only better maintain the original aroma of cut tobacco at low temperature, but also increase its filling value to a certain extent, thereby greatly reducing the quality loss of cut tobacco in the existing production process. There are two kinds of the most representative shredded tobacco drying methods at present. [0003] One is the HXD drying method, which is mainly to moisten the shredded tobacco with water, then put the shredded tobacco into a high-temperature circulating gas at 200-400°C for h...

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the problems of burnt and crushed phenomena in the process of drying cut tobacco in the prior art, as well as the poor quality of cut tobacco and low filling value, which cannot meet the needs of the development of the tobacco industry, and provides a low-temperature microwave drying method for shredded tobacco. Vacuum drying process, which can prepare shredded tobacco in vacuum and at a lower temperature than the above two drying methods, so as to maintain the color, aroma and taste of shredded tobacco and increase a certain filling value