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Abstract

Fractionated plant extracts, particularly essentially nicotine-free tobacco extracts, useful as tobacco flavorants and methods for preparing and using the same are described herein. These fractionated extracts are stable, non-volatile and relatively odorless under conditions of smoking article or smoking substitute article manufacture and storage, but when thermally provoked, the extracts deliver characteristic flavor to smoking articles or smoking substitute articles. The fractionated plant extracts may be prepared by contacting plant matter with a solvent to produce a crude plant extract; removing the solvent from this plant extract; and isolating a fraction of this extract that when thermally provoked provides the characteristic aroma and flavor of the plant by size exclusion chromatography and monitoring the fraction's integrity by suitable detection means.

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First Claim