Abstract
The constituents and their contents of carbonyl compounds contained in the essential oil of Japanese Burley Tobacco Leaf (JBTL) were investigated and compared with those of Japanese Flue Cured tobacco leaf (JFCTL). Benzaldehyde, acetaldehyde, furfural, 5-hydro-xymethyl-furfural, isobutyraldehyde and C6-aldehyde were isolated from the carbonyl-fraction in the essential oil of JBTL. A remarkable characteristic of the essential oil of JBTL is that benzaldehyde was proved as a predominant constituent and the content of furfural was ex-ceedingly smaller than that of JFCTL. 5-Methylfurfural, found in the essential oil of JFCTL, could not be isolated from that of JBTL.
