An aerosol-generating material including an amorphous solid, wherein the amorphous solid includes: 1-60 wt % of a gelling agent; 5-80 wt % of an aerosol-former material; and 10-60 wt % of an active substance; wherein these weights are calculated on a dry weight basis, and wherein the gelling agent includes alginate and pectin, wherein a ratio of the alginate to the pectin is from 1:1 to 10:1.

The present disclosure provides a method for extracting tar aroma components from a cigarette butt and use of the tar aroma components in a cigarette. The method includes the following steps: (1) adding the cigarette butt to an extraction solvent, and carrying out ultrasound-assisted extraction to obtain an extraction solution; (2) centrifuging the extraction solution, and carrying out vacuum distillation on the supernatant to obtain a concentrated extractum; and (3) carrying out molecular distillation on the concentrated extractum, and collecting a light fraction of the molecular distillation to obtain the tar aroma components. In the present disclosure, the cigarette butt is used as a raw material, through the ultrasound-assisted extraction and separation by the molecular distillation to extract the tar, harmful substances in the tar are removed, and the aroma components are retained. The tar aroma components are applied to a heat-not-burn cigarette, so that the aroma, smoke and taste characteristics of the heat-not-burn cigarette are improved, and the problems of insipidness and uneven aroma release of the heat-not-burn cigarette are solved effectively.

The present disclosure provides a method for extracting tar aroma components from a cigarette butt and use of the tar aroma components in a cigarette. The method includes the following steps: (1) adding the cigarette butt to an extraction solvent, and carrying out ultrasound-assisted extraction to obtain an extraction solution; (2) centrifuging the extraction solution, and carrying out vacuum distillation on the supernatant to obtain a concentrated extractum; and (3) carrying out molecular distillation on the concentrated extractum, and collecting a light fraction of the molecular distillation to obtain the tar aroma components. In the present disclosure, the cigarette butt is used as a raw material, through the ultrasound-assisted extraction and separation by the molecular distillation to extract the tar, harmful substances in the tar are removed, and the aroma components are retained. The tar aroma components are applied to a heat-not-burn cigarette, so that the aroma, smoke and taste characteristics of the heat-not-burn cigarette are improved, and the problems of insipidness and uneven aroma release of the heat-not-burn cigarette are solved effectively.

An aerosol generation device configured to heat a consumable comprising tobacco includes: a housing; and a reel arranged to rotate on an axis of rotation within the housing so as to wind a consumable around the reel. The consumable has a winding dimension along which it is wound around the reel. The reel comprises a positioning means for positioning the consumable along the winding dimension before the consumable is wound around the reel, and the reel comprises an engagement means for engaging with the consumable when the reel rotates.

An aerosol generation device configured to heat a consumable comprising tobacco includes: a housing; and a reel arranged to rotate on an axis of rotation within the housing so as to wind a consumable around the reel. The consumable has a winding dimension along which it is wound around the reel. The reel comprises a positioning means for positioning the consumable along the winding dimension before the consumable is wound around the reel, and the reel comprises an engagement means for engaging with the consumable when the reel rotates.

An aerosol-generating device to receive an aerosol-generating article is provided, the device including: distal and mouth ends; a housing including a peripheral wall defining a device cavity to removably receive the article at the mouth end; and a heater to heat the article when the article is received within the device cavity, the housing including a ventilation chamber defined within the peripheral wall, the chamber configured to be in fluid communication with an exterior of the device and the article received within the device cavity, and with the exterior of the device through a chamber inlet defined within a thickness of the peripheral wall, the chamber inlet having a cross-sectional area smaller than a cross-sectional area of the chamber and extending between the chamber and the mouth end, and in which a length of the chamber is less than or equal to 8 mm.

An aerosol-generating device to receive an aerosol-generating article is provided, the device including: distal and mouth ends; a housing including a peripheral wall defining a device cavity to removably receive the article at the mouth end; and a heater to heat the article when the article is received within the device cavity, the housing including a ventilation chamber defined within the peripheral wall, the chamber configured to be in fluid communication with an exterior of the device and the article received within the device cavity, and with the exterior of the device through a chamber inlet defined within a thickness of the peripheral wall, the chamber inlet having a cross-sectional area smaller than a cross-sectional area of the chamber and extending between the chamber and the mouth end, and in which a length of the chamber is less than or equal to 8 mm.

An aerosol-generating material including an amorphous solid, the amorphous solid including 0.1-80 wt % of menthol; 1-60 wt % of a gelling agent, the gelling agent having calcium-crosslinked alginate which includes α-(1-4)-linked L-guluronate (G) units; and 0.1-50 wt % of an aerosol-former material; wherein a molar ratio of Ca.sup.2+ cations to G units is from 0.2:1 to 1:1.

A tobacco composition including tobacco material and an aerosol former material. The tobacco material includes a leaf tobacco having sugars and nicotine in a weight ratio of between about 8:1 and about 20:1, wherein said leaf tobacco having sugars and nicotine in a weight ratio of between about 8:1 and about 20:1 is present in the tobacco material in an amount of at least 5% by weight of the tobacco material.

A tobacco composition including tobacco material and an aerosol former material. The tobacco material includes a leaf tobacco having sugars and nicotine in a weight ratio of between about 8:1 and about 20:1, wherein said leaf tobacco having sugars and nicotine in a weight ratio of between about 8:1 and about 20:1 is present in the tobacco material in an amount of at least 5% by weight of the tobacco material.