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CORESTA Meeting, Smoke/Technology, Innsbruck, 1999, ST36

The aroma of cigarette paper - characterisation with gas chromatography and principal component analysis

VOLGGER D.
Papierfabrik Wattens GmbH, Wattens, Austria.
Sensory evaluation is an extremely important feature in the production of cigarettes. Beside the tobacco also the cigarette paper has an influence on the aroma of the cigarettes. Therefore a new analytical method for the determination of the aroma of cigarette paper was developed. In this work samples of cigarette paper and plug wrap paper were analysed by Gas Chromatography equipped with a Mass Spectrometric Detector (GC-MSD) in combination with Sniff Detection to study differences in the aroma. The obtained results were compared with other methods known in the literature, like Electronic Nose, Likens - Nickerson - Extraction, Solid Phase Micro Extraction (SPME), and Head Space. Samples were taken daily directly from the paper machines. The sample preparation was performed with Thermo - Extraction, which has the advantage, that no organic solvent must be used and that volatile compounds, independent from the chemical properties, can be extracted. For this purpose the paper is heated at a defined temperature under a defined flow of helium. The components, desorbed from the paper were collected on a adsorption material, in the most case Tenax TA. Glass tubes, containing this adsorption material were put directly into the injector of the gas chromatograph, which is equipped with a Thermo - Desorption - System (TDS) and a Cold - Injection - System (CIS). For the interpretation of the chromatograms odorous regions were identified with the Sniff - detector and the individual peaks were then identified and quantified by the MSD. With the calculated concentrations a principal component analysis was performed and it could be shown, that it is possible to differentiate paper samples with regard to the used pulps and burning additives for the production. Furthermore the calculated models are suitable for a continuous quality control of the produced paper.