Changes of tobacco leaf surface alkane during curing under different curing measures
We investigated the effects of different curing measures on the changes of tobacco leaf surface al-kane and the losses during curing.The result showed stick-hanging bulk curing barn caused most alkane loss,and the total amount of alkane in cured leaf was reduced by 58.9% compared with the uncured leaf,which was mainly occurred during yellowing and stem-drying stages;basket-holding bulk curing barn had the least alkane loss,and the total amount of alkane in cured leaf was only reduced by 13.8% compared with the uncured leaf,which was mainly occurred during lamina-drying stage;loose-leaf bulk curing barn and traditional curing barn caused mod-erate alkane losses,and the total amounts of alkane in cured leaves were respectively reduced by 35.8% and 32.3% compared with the uncured leaves,which were also mainly occurred during stem-drying stage.It appears that basket-holding bulk curing is one of the effective measures to reduce the aroma loss caused by stick-hang bulk curing.