The Linkage of Colors and Chemical Components within Flue-cured Tobacco Leaves

PurposeStudy on the relation of apperant colors and internal chemical components in tobacco leaves.

Method The color and chemical composition of different forms of Yunyan87 were examined by standard method.

Result(1) The brightness of tobacco leaves continued to slide, red color became dominating until it reached stability, yellow color was quite stable, color changed between the front and back face of the leaves were synchronized, under short-term storage. (2) The contents of total alkaloids, nitrogen and sugar, as well as chlorogenic acid and rutin were declined, the contents of reducing sugar and scopoletin were increased, within tobacco leaves. (3) The relativities in color of front face of the leaves reached 5% or 1% signification levels in comparison with reducing sugar and polyphenols.

ConclusionIn order to improve the internal quality of the tobacco leaves, consistent surveillance on the color changes of tobacco leaves during storing process, as well as to establish a suitable plan for threshing and redrying tobacco leaves and further manufacturing become so important.