Cigar-flavor tobacco extract and preparation method thereof

The invention relates to cigar-flavor tobacco extract and a preparation method thereof, and belongs to the technical field of tobacco extract. According to the preparation method of the cigar-flavored tobacco extract, an extract liquid and tobacco leaf residues are obtained through subcritical extraction, the extract liquid is subjected to alcohol precipitation impurity removal and two-stage molecular distillation to obtain an extract A, the tobacco residues are subjected to extraction and Maillard reaction to obtain an extract B, and the two extracts are mixed to obtain the cigar-flavored tobacco extract. According to the method, long-chain alkane is removed, the content of low-carbon alkane and higher fatty acid is effectively reduced, the fragrance such as honey sweet fragrance, acid fragrance and baking fragrance is more prominent, offensive odor and irritation are reduced, and the sensory quality is greatly improved; the content of reducing sugar in the tobacco extract is also reduced, and the smoke conc