Studies on the Essential Oils of Tobacco Leaves

Part X. Acid Fraction in the Essential Oil of the Japanese Flue Cured Tobacco Leaf Before Redrying and Aging

Abstract

Acid fraction of the essential oil of Japanese flue cured tobacco leaf, before redrying and aging (BRA), was compared with that of the same leaf after aging (AA) as reported in previous papers^{1, 2)}. The organic acids which were isolated and identified in the essential oil of BRA are similar to those of AA, except that the former contains propionic and methyl-ethylacetic acids, which were not found in the latter. While, on the other hand, total volatile acids in AA was amounted to about three times as much as that of BRA, and especially the increase of acetic and phenylacetic acids was remarkable during the process of aging.