A method of modifying the moisture level of (e.g., dehydrating) a tobacco plant or portion thereof, a tobacco-derived material, a tobacco product, or a tobacco additive is provided herein. The methods of dehydration disclosed herein can provide various benefits relative to traditional drying techniques, including providing retention of various beneficial components present in green tobacco (e.g., organoleptic compounds and proteins). Smoking articles and other tobacco products including such dehydrated tobacco materials are also provided.

A method for enriching a burnt-sweet aroma note in Yunnan flue-cured tobacco includes: S1: diluting a Yunnan flue-cured tobacco extract with a diluent to obtain an obtained diluted solution; S2: subjecting the obtained diluted solution to an elution treatment using a C18 column under a pressure of 5-20 bar, the elution treatment including: first performing a primary elution with a first eluent, then performing a secondary elution with a second eluent, and collecting a secondary elution solution as a collected secondary elution solution, the first eluent including water or an aqueous ethanol solution with a mass concentration of less than 10%, and the second eluent including an aqueous ethanol solution with a mass concentration of 38-42%; and S3: concentrating the collected secondary elution solution to obtain a sample with the burnt-sweet aroma note.