Effect of vacuum conditioning on the color and inner quality in the cigarette process

In order to examine the effects of vacuum conditioning on tobacco cigarette process color and the inner quality,in threshing and redrying and the silk processing,the cross-comparative analysis of the same flue-cured tobacco leaf were carried out with or without going through vacuum conditioning.The results showed that tobacco color was darker,but tobacco yellow pigment and polyphenol content were reduced with the increase of processing intensity.Compared with leaves without vacuum conditioning,with adding vacuum conditioned in the silk processing,smoke concentration somewhat increased and the quantity of flavor was good,the inner quality was better.But tobacco smoking quality decreased after two vacuum conditioning.