Cooperation Centre for Scientific Research Relative to Tobacco
Centre de Coopération pour les Recherches Scientifiques Relatives au Tabac

The following presentations are summarized: Lucas, J. A. (Bristol University, UK). Plant immunization from myth to SAR; Kogel, K.H. (University of Giessen). Cytological analysis of the SAR response of cereals to powdery mildew fungus; Neuenschwander,...

In order to understand the behaviour of tobacco additives in the burning cigarette it is important to know whether they transfer intact to the smoke or whether there is any decomposition during smoking. There are practical problems in comparing the...

In order to judge the quality of tobacco leaf, it is necessary to conduct sensory smoke evaluations. However, these are subjective and the results are difficult to quantify. Therefore, we have attempted to establish a quantitative method for...

We developed an internal standard-based method to analyze the vapor phase components of mainstream smoke. This method collects vapor phase components from sample cigarettes, which are smoked by a linear automatic smoking machine in a sampling bag. An...

An equation to describe the water sorption isotherm of tobacco is developed based on a model of the tobacco-water system as a mixture or solid solution comprised of water and water binding sites of many different kinds. It is assumed that free water...

The analytical methods developed since the 1950s to determine the "smoke pH" of cigarette mainstream smoke (MSS) are reviewed. Most of the methods involve averaging the values obtained with all the puffs from a cigarette or averaging values from the...

Transfer of nicotine to mainstream smoke was measured for Reference cigarettes made with the addition of 20-40 mg of seven different nicotine salts, d - and l -nicotine and N' -formylnornicotine. Regression analysis of the nicotine yields from...

The potential for aflatoxin B1 contamination of tobaccos and its subsequent transfer to smoke has been raised. This paper examines published work relevant to this issue and concludes that aflatoxin B1 is not a contamination issue on tobaccos and,...

A brief review is presented of the scientific literature on the effects of ammonia compounds, when used as tobacco additives, on the smoke chemistry and bioavailablity of nicotine. The review concludes that ammonia compounds used in the manufacture...

The fact that most soils in Malawi are acidic has been known for some time and such soils have detrimental effects on tobacco production. Correcting soil acidity is achieved by proper liming regimes with the aim of increasing soil pH and the...