Search Results

12 results

  1. CORESTA Congress, Shanghai, 2008, AP 08

    The influence of post-curing handling of Burley and dark air-cured tobacco on TSNA and nitrite levels

    VERRIER J.L.; WIERNIK A.; STAAF M.; CADILHAC J.L.; ONILLON M.; VIDAL B.
    Institut du Tabac, Imperial Tobacco Group, Bergerac, France
    While most of Tobacco Specific Nitrosamines (TSNA) are formed during air-curing, further accumulation may occur between end of cure (EOC) and delivery. In order to investigate putative factors affecting this accumulation, different ways of storing have ...
  2. CORESTA Congress, Paris, 2006, PT 20

    Feature selection from near infrared spectra using genetic algorithms for tobacco blend recognition

    FIGUERES G.; DE SOUZA S.; REYNES C.; SABATIER R.; VIDAL B.
    Altadis Research Centre, Fleury-les-Aubrais, France
    Near infrared reflectance spectroscopy has proved to be very useful for predicting concentrations of chemical compounds in tobacco, classification or pattern recognition of cigarette blends. The resulting measurement of a sample is a whole reflectance ...
  3. CORESTA Congress, Paris, 2006, SS 13

    A mixture experimental design with six variables and the effects on smoke components:1 - Presentation of this experimental design and of some initial results on physical characteristics of cigarettes and blends

    VIDAL B.; FIGUERES G.; BIESSE J.P.; BREGEON B.; LOUVET F.; MUZELLEC L.
    Altadis Research Centre, Fleury-les-Aubrais, France
    The objective of this paper is to examine the effects of six tobacco components on the chemical and physical characteristics of blends and cigarettes and particularly on the mainstream smoke yields. First of all, we will develop the philosophy of this ...
  4. CORESTA Congress, Paris, 2006, SS 14

    A mixture experimental design with 6 variables and the effects on smoke components:2 - Hoffmann analytes behaviour through a mixture experimental design

    FIGUERES G.; VIDAL B.; BIESSE J.P.; BREGEON B.; LOUVET F.; MUZELLEC L.
    Altadis Research Centre, Fleury-les-Aubrais, France
    Today in the tobacco industry, one of the main scientific challenges is to understand the formation of some smoke compounds ("Hoffmann analytes"). For several years, work has been conducted in order to know the influence of cigarette design ...
  5. CORESTA Congress, Kyoto, 2004, PT 08

    Hoffmann analytes: Influence of cigarette paper and filter ventilation

    LOUREAU J.M.; BIESSE J.P.; CLARISSE G.; VIDAL B.; DUMERY B.; LE MOIGNE C.; LE BEC L.; LE BOURVELLEC G.
    Papeteries de Mauduit, Quimperlé, France; Altadis, Les Aubrais, France
    Having a tool that can predict the Hoffmann analytes has become necessary, not only because of regulations, but also as a reference for the chemical composition of smoke for the Potential Reduced Exposure Products (PREPs). The work presented in this paper ...
  6. CORESTA Congress, Kyoto, 2004, SS 14

    Prediction of a biological variable (Ames test on TPM) and of a chemical variable (TSNAs in smoke) according to the tobacco's chemical and physical characteristics

    BOUZIGE M.; VIDAL B.; BIESSE J.P.; JOUSSERAND C.; MARCHAND V.; DUMERY B.
    Altadis Research Centre, Fleury-les-Aubrais, France
    Chemical analyses of special analytes (e.g. TSNAs) or biological tests on the smoke are rather sophisticated and time consuming technologies. Giving estimates based on fast analyses would enable the blenders to have a tool allowing them to reduce tobacco ...
  7. CORESTA Congress, Kyoto, 2004, SSPT 02

    Near-infrared spectroscopy and pattern recognition as screening methods for classification of commercial tobacco blends

    FIGUERES G.; ANDRIEU E.; BIESSE J.P.; VIDAL B.; DUMERY B.
    Altadis Research Centre, Fleury-les-Aubrais, France
    Group classification of tobacco blends is commonly performed using several different types of compositional data including tobacco compounds, additive or process components. But all of these wet chemistry methods are relatively time-consuming. A need ...
  8. Bull. Spec. CORESTA Congress, Lisbon, 2000, p. 54, AP4

    Study of factors influencing the concentration of tobacco-specific nitrosamines (TSNA) in air-cured tobaccos

    DE ROTON C.; SAN L.H.; VERRIER J.L.; VIDAL B.
    Altadis - Institut du Tabac, Bergerac, France
    Several experiments were conducted in 1997 and 1998 at the Bergerac Tobacco Institute to investigate the effets of variety, nitrogen fertilization and after-curing storage modes on TSNA concentrations in air-cured tobaccos, Burley and dark types. The ...