Abstract
Constituents of the acid fraction and their contents in the essential oil of the American, flue cured tobacco leaf (AFCTL) were determined and compared with those of the Japanese flue cured tobacco leaf (JFCTL)1). No difference was found in regard of the kind of volatile organic acid, except that AFCTL contained no α-crotonic acid. On the other hand, the content of the acid fraction in AFCTL was exceedingly higher than that of JFCTL, especially in low molecular fatty acids. Both n- and isovaleric acids could not be isolated and identified in AFCTL, as well as in JFCTL, but the presence of β-methylvaleric acid was also proved and it seemed that this acid might be one of the important constituents for the aromatic character of Virginia tobacco leaves.
