Abstract: A method of producing a liquid tobacco extract, the method including the steps of: preparing a tobacco material; applying an alkaline solution to the tobacco material to produce an alkalised tobacco material; heating the alkalised tobacco material at an extraction temperature of between 100 degrees Celsius and 160 degrees Celsius for at least 30 minutes, the alkalised tobacco material being heated in a flow of inert gas or in a flow of a combination of an inert gas with water or steam, and a water content of the alkalised tobacco material, prior to the heating step, being between 10 percent by weight and 20 percent by weight; condensing volatile compounds released from the alkalised tobacco material during the heating step and collecting condensate of the volatile compounds; and forming a liquid tobacco extract comprising the condensate of the volatile compounds.

Abstract: A method of producing a liquid tobacco extract is provided, the method including the steps of: preparing a tobacco material; heating the tobacco material in an extraction chamber at an extraction temperature of between 120 degrees Celsius and 160 degrees Celsius for at least 90 minutes; spraying atomised water into the extraction chamber during the heating step; collecting volatile compounds released from the tobacco material during the heating step; and forming a liquid tobacco extract comprising the collected volatile compounds. A liquid tobacco extract produced by the method is also provided.

Abstract: A method of producing a liquid tobacco extract is provided, the method including the steps of: preparing a tobacco material; heating the tobacco material at an extraction temperature of between 100 degrees Celsius and 160 degrees Celsius for at least 15 minutes, the tobacco material being heated directly; collecting volatile compounds released from the tobacco material during the heating step; and forming a liquid tobacco extract including the collected volatile compounds, the tobacco material being microwave heated during at least one step of the method. A liquid tobacco extract produced by the method is also provided.

Abstract: A combustible heat source for an aerosol-generating article, the combustible heat source comprising: carbon; an alkaline earth metal peroxide ignition aid; and a binding agent comprising at least one non-cellulosic film-forming polymer.

Abstract: A combustible heat source for an aerosol-generating article, the combustible heat source comprising: carbon; an alkaline earth metal peroxide ignition aid; and a binding agent comprising a combination of carboxymethyl cellulose and at least one additional cellulose ether. Preferably, the at least one additional cellulose ether is selected from the group consisting of ethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methylcellulose.

Abstract: A combustible heat source for an aerosol-generating article, the combustible heat source comprising: carbon; an alkaline earth metal peroxide ignition aid; and a binding agent comprising at least one non-cellulosic film-forming polymer.

Abstract: A multi-segment component for an aerosol-generating article is provided, the multi-segment component including: a combustible heat source; an aerosol-forming substrate downstream of the combustible heat source; and a wrapper circumscribing a rear portion of the combustible heat source and at least a front portion of the aerosol-forming substrate, a front portion of the combustible heat source extending beyond the wrapper so that the front portion of the combustible heat source is exposed during use; and an intumescent coating on all or part of the front portion of the combustible heat source, the intumescent coating being configured to form a heat insulating layer on the front portion of the combustible heat source in response to heating by the combustible heat source.