Preparation method and application of Pu'er tea extract to cigarettes

The the invention discloses a preparation method and application of a Pu'er tea extract to cigarettes. The method is as below: crushing Pu'er tea, adding a leaching solvent, soaking with heat preservation and cover, filtering to obtain filter residue and a leaching liquor, conducting secondary immersion filtering on the filter residue with thee leaching liquor, merging the two leaching liquor, and conducting vacuum drying to obtain the Pu'er tea extract. The invention uses the Pu'er tea extract as an additive for functional cigarettes; the Pu'er tea extract is dissolved in glycerol triacetate and added to the mouth bar tow as a plasticizer, or added to tobacco shreds as a surface essence; and the processing production does not need to change the existing process, causes no environmental pollution, and enriches the types of natural plant source essence perfume. The volatile aroma and functional components in the Pu'er tea extracts, or the latent fragrant substances in the extract can participate in fume reaction to endow the cigarettes with fresh and elegant aroma, enhance the sensory qualities of saliva secretion promotion, after taste, moistness and mellowness of the cigarettes, and to enrich the flavor of the cigarettes.