Chlorogenic Acid in the Tobacco Leaf during Flue-curing

Abstract

Chlorogenic acid in the tobacco leaf during flue-curing increases to about nine times as much as that of its content in the fresh leaf. This is shown as follows: fresh leaf, 0.34; warming stage, 0.71; streching stage, 0.68; yellowing stage, 1.61; fixing stage, 2.05; killing stage, 3.01; cured leaf, 3.06%. From above it is clear that chlorogenic acid in the tobacco leaf is formed in considerably great quantities during flue-curing.