Effect of microwave pretreatment on the conventional chemical composition and volatile aroma components of flue-cured tobacco leaves for heated cigarettes
With tobacco samples from the lower part of Henan production area as raw materials,the conventional chemical components and volatile aroma components in different microwave pretreated flue-cured tobacco leaves were analyzed by continuous flow analysis,high performance liquid chromatography and gas chromatography-ion mobility spectrometry(GC-IMS),etc.The results showed that microwave hydrothermal treatment could reduce the contents of water-soluble sugar,reducing sugar,plant alkaloid and phenolic substances in flue-cured tobacco leaves.Microwave hydrothermal treatment could increase the contents of total nitrogen and petroleum ether extract,and significantly increase the nitrogen-alkali ratio of flue-cured tobacco leaves(P≤0.05).The nitrogen-base ratio in the microwave hydrothermal 700 W-6 min treatment group was as high as 1.65.After microwave drying,the conventional chemical components in flue-cured tobacco leaves were still in the category of high-quality tobacco leaves,and the volatile alkali content increased significantly(P≤0.05).In addition,a total of 56 volatile aroma components were identified by GC-IMS,and the fresh aroma of flue-cured tobacco leaves could be increased by microwave water heat treatment,while the sweet flavor of flue-cured tobacco leaves could be increased by micro-wave drying treatment.
国家科技期刊平台
NSTL
万方数据
维普
