A method for preparing a tar extract from a discarded cigarette butt and use of the tar extract in a cigarette includes the following steps: (1) adding the discarded cigarette butt to an extraction solvent, and carrying out microwave-assisted extraction to obtain an extraction solution; and (2) centrifuging the extraction solution, carrying out silica gel column chromatography on the supernatant, carrying out elution by using a petroleum ether-ethyl acetate mixed solution as a mobile phase, and collecting the resulting elution fraction to obtain the tar extract. In the method, the tar is extracted from the discarded cigarette butt as a raw material. Through the microwave-assisted extraction and separation by the silica gel column chromatography, harmful substances in the tar of the cigarette butt are removed, and the components with aroma characteristics are retained, and the tar extract is applied to a low-end cigarette.

The present invention relates to a vaping article comprising an aerosol-generating zone, a zone for cooling the aerosol comprising a paper in the shape of a hollow tube, this paper comprising a fibrous substrate, and optionally a filtering zone,
characterized in that the zone for cooling the aerosol is functionalized by a plant extract and an aerosol-generating agent.

In one aspect an aerosol-generating device comprising a smoking article and a heat source is described. The smoking article includes a smokable material and a cooling agent, the smokable material including a tobacco component. The heat source is disposed to heat, but not burn the smokable material in use. The cooling agent comprises a compound or a combination of compounds according to either of the following formulae, racemates, enantiomers and salts thereof (I, II). ##STR00001##

In one aspect an aerosol-generating device comprising a smoking article and a heat source is described. The smoking article includes a smokable material and a cooling agent, the smokable material including a tobacco component. The heat source is disposed to heat, but not burn the smokable material in use. The cooling agent comprises a compound or a combination of compounds according to either of the following formulae, racemates, enantiomers and salts thereof (I, II). ##STR00001##

An object of the present invention is to provide a cellulose acetate composition for thermoforming with excellent biodegradability and excellent thermoformability. A cellulose acetate composition for thermoforming containing a cellulose acetate and a glycerin ester-based plasticizer, wherein the cellulose acetate has a degree of acetyl substitution of 1.4 or greater and 2.0 or less, a compositional distribution index (CDI) of 4.0 or less, and a total sulfur content of 15 mg/kg or greater and less than 150 mg/kg.

A filter for a smoking article has improved biodegradability and improved taste during smoking of the smoking article. The filter includes a segment having a filtration substrate including natural cellulose fibres, and a wrapper at least partly surrounding the segment. The filtration substrate contains a composition including an additive for reducing phenols.

A filter for a smoking article has improved biodegradability and improved taste during smoking of the smoking article. The filter includes a segment having a filtration substrate including natural cellulose fibres, and a wrapper at least partly surrounding the segment. The filtration substrate contains a composition including an additive for reducing phenols.

A cigarette for an aerosol generating device includes a tobacco rod containing an aerosol generating material; and a cooling rod arranged at one side of the tobacco rod and comprising a hollow extending in a longitudinal direction of the cigarette, wherein a cooling material layer is coated on an inner surface of the cooling rod.

There is disclosed a method of making a filter element or mouthpiece (300) comprising the steps of: advancing filtering material in the longitudinal direction; drawing the advancing filtering material into a shaping element (110), to thereby form a longitudinally extending rod of filtering material comprising a channel extending longitudinally through the rod of filtering material; wherein the shaping element (110) comprises a chamber and a shaping rod (200) which extends longitudinally within the chamber, the inner surface of the chamber shaping the advancing filtering material to form the longitudinally extending rod of filtering material, and the shaping rod (200) shaping the advancing filtering material to form the channel extending longitudinally through the rod of filtering material; and wherein the shaping element (110) applies an additive to the filtering material.

There is disclosed a method of making a filter element or mouthpiece (300) comprising the steps of: advancing filtering material in the longitudinal direction; drawing the advancing filtering material into a shaping element (110), to thereby form a longitudinally extending rod of filtering material comprising a channel extending longitudinally through the rod of filtering material; wherein the shaping element (110) comprises a chamber and a shaping rod (200) which extends longitudinally within the chamber, the inner surface of the chamber shaping the advancing filtering material to form the longitudinally extending rod of filtering material, and the shaping rod (200) shaping the advancing filtering material to form the channel extending longitudinally through the rod of filtering material; and wherein the shaping element (110) applies an additive to the filtering material.