Differential analysis in aroma component release between heated cigarettes and traditional cigarettes based on unblended leaf tobacco
To investigate the differences in aroma components release between the heated cigarette and traditional cigarette,10 unblended leaf tobacco were prepared into two types of cigarettes.The aroma components in the aerosol of heated cigarettes and in the mainstream smoke of traditional cigarette were analyzed by GC/MS.And orthogonal partial least squares discriminant analysis(OPLS-DA)model were used to evaluate the differences of aroma components in the two types of cigarettes.The results showed that a total of 53 and 77 aroma components were identified in the aerosol of heated cigarettes and in the mainstream smoke of traditional cigarettes,respectively.Among the 47 common components,the release of 13 aroma components in the heated cigarettes were more than traditional cigarettes,such as,acetic acid,γ-Butyrolactone and the other 11 aldehyde ketone compounds.53 different aroma components between heated cigarettes and traditional cigarettes were screened by OPLS-DA,including 7 pyrazine-pyridines,12 ketones,4 furans,9 acids,3 esters,8 phenols,9 hydrocarbons,and 1 alcohol.According to the proportion of differential aroma components in the total identified components of the same category,the most significant differences in the release of phenolic components were observed between the two types of cigarettes,followed by hydrocarbons,pyrazine-pyridines,acids,esters,ketones,furans,alco-hols.
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