Effects of leaf-threshing and redrying on aromatic components and sensory quality of model tobacco leaf.

To investigate the influences of leaf-threshing and redrying on the aromatic components and sensory quality of tobacco leaf,the good-grade tobacco module A and middle-grade tobacco module B were chosen as the studied objects,the on-line samples of each key process were collected,and then their aromatic components and sensory quality were determined.The results showed that the total content of aromatic components tended to rise in the process of the first conditioning,and then tended to reduce in the process of the second conditioning and redrying.The changes of different kinds of aromatic components in the process of leaf-threshing and redrying were different between module A and module B.Sensory quality evaluation results revealed that the order of influence of each key process on the sensory quality was: the first conditioningredryingthe second conditioning,and this influence mainly displayed in the aspects of aroma content,offensive taste and irritation.