Abstract: A cigarette having a wrapper comprising one to fifty percent by weight of calcium sulphate and/or calcium tartrate exhibits reduced sidestream smoke delivery and increased puff number.

Abstract: A nicotine dispensing aerosol device has nicotine and propellant storage containers connected to atomization nozzle from which a nicotine-aerosol spray can flow. A conical aerosol confining chamber extends from the nozzle, the cross-section of the chamber enlarging away from the nozzle. Large aerosol particles are removed by impaction on the upstream face of an impaction member, which member is located in the wider, outlet region of the aerosol confining chamber. A series of baffles are provided downstream of the impaction member, which baffles serve to produce a long, sinuous path for aerosol flow. The duration of the passage of the aerosol from the nozzle to the user is thereby increased, allowing more evaporation of the particulate phase of the aerosol. The device is, therefore, operable to dispense nicotine in an aerosol of a constitution which approximates that of tobacco smoke.

Abstract: In a method of expanding tobacco the tobacco is contacted in a first vessel with an expansion agent and, with the vessel being closed and liquid phase expansion agent in the tobacco being at a temperature above the boiling point at a lower, release pressure, the first vessel is connected to a closed second vessel the interior of which is at the release pressure. When the tobacco is contacted in the first vessel with the expansion agent, the tobacco is maintained in a mobilized, particle separated condition by supplying gaseous mobilizing medium to a mobilizing zone of the first vessel via nozzles located at upwardly diverging walls bounding the zone and preferably supplying in addition gaseous accelerating medium to the zone in an upward direction from a lower region of the zone.

Abstract: This invention relates to a method for enhancing the smoke flavor of a smoking material by treating the said material with an agent comprising 3-hydroxysclareol, particularly with the compound 3.beta.-hydroxysclareol. The invention further relates to the smoke-enhancing agent and a method by which it can be obtained by subjecting sclareol to a microbial transformation process. Finally it extends to smoking material incorporating the said agent.

Abstract: In a headspace-sampling apparatus and method, use is made of a sampling body which defines a sample chamber, first passage means extending from said chamber, means for connecting said passage means to the entry end of a chromatography column held in operative position in a gas chromatograph, second passage means extending to said chamber, and means for connecting a source of gas to said second passage means. When the first-named connection means is connected to the column, a gas flow can be established within the body from the second named connection means through the said chamber to the entry end of the column, whereby a headspace sample of said substance is swept directly from said chamber on to an entry end region of said column, the headspace sample being cumulatively trapped at said region.

Abstract: The invention is concerned with a wrapped cigarette and a method of producing the wrapper. A very highly porous wrapping paper, with an air porosity within the range from 2,450 to 20,000cm.sup.3 min.sup.-1 10cm.sup.-2 10cmWG.sup.-1 is produced by perforation from a base paper having a tensile breaking strength of not less than 85 g per mm width of paper. The means number of perforations is suitably within the range from 10 to 150 per cm.sup.2 of the paper and the mean diameter within the range from 30 to 200 microns. A cigarette wrapped in the highly porous paper may advantageously be provided with a tobacco-smoke filter having a filtration efficiency for nicotine within the range of 15 to 30%.