Effects of Different Processing Intensities in Threshing and Redrying on Aroma Substances in Tobacco
[Objective]The study aims to improve the content of aroma substances among flue-cured tobacco leaves in Yunnan industrial areas and minimize the loss of aroma components in raw materials.[Method]Based on the middle leaves of yunyan 87 CO2 in YuXi,the process pa-rameters of vacuum pre-conditioner section,leaf moistening section,leaf baking and drying section,and recovery section were adjusted re-spectively,and the types and contents of incense substances in tobacco leaves in each process section were determined.[Result]Threshing and redrying cannot increase the total amount of aroma substances in tobacco leaves,but can adjust the composition of aroma substances,it shows that the contents of Maillard reaction products,cembranoids,and other aroma substances increase,and the contents of phenylalanines and plastid pigment degradation products decrease during threshing and redrying;vacuum re-moisture and baking re-moisture zone are the two key processes of threshing and redrying.The specific feature is that the Maillard reaction products and plastid pigment degradation products are significantly increased during the vacuum re-moisture stage,and the cembranoids substances are significantly increased during the re-roasting and re-moisture stage.[Conclusion]In order to carry forward the sweet and fragrant style of Yunnan tobacco leaves,the degradation products of plastid pigments should be retained and the products of Maillard reaction should be suppressed,thus the process parameters of vacuum re-moisture should be at normal strength,and the process parameters of rebaking moisture should be at low strength.
Flue-cured tobaccoThreshing and redryingAroma substancesVacuum pre-conditioner
国家科技期刊平台
NSTL
万方数据
维普
