Appearance and intrinsic quality of stored tobacco leaf.

The compounding tobacco leaves produced from Chongqing,Yunnan,Guizhou,Hunan,Hubei,Guangxi were collected from Hongling storage of Wuming,Nanning and Longteng storage of Liuzhou.The appearance quality of tobacco leaves were investigated,the chemical components and sensory and smoking quality of tobacco leaves with different appearance quality were analyzed.The results showed that the appearance quality of tobacco leaves could be affected by location cultivation,grade and storage conditions of tobacco leaves.The color change(browning) and oil mark of tobacco leaf produced by Yunnan,Guizhou and Guangxi were higher.More severe browning and oil mark were observed with the grade increasing of tobacco leaves.The browning and oil mark in tobacco leaf stored in Longteng storage of Liuzhou were higher than that of Hongling storage of Wuming.The ratio of chemical components in tobacco leaves with severe oil marks and browning were imbalanced,the intrinsic quality of tobacco leaves reduced significantly with worse aroma quality,lower aroma quantity,worse eating flavour,increasing offensive odor and irritancy.Therefore,it was suggested that the man-agement of storing tobacco leaves at the location of production by controlling water content in tobacco leaves and humidity and temperature of the location should be taken into account to reduce the color change(browning) and oil mark for de-creasing the losses.