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30 results

  1. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2005-21-6, p. 305–20., ISSN.0173-783X

    Factors influencing the formation of tobacco-specific nitrosamines in French air-cured tobaccos in trials and at the farm level

    DE ROTON C.; WIERNIK A.; WAHLBERG I.; VIDAL B.
    Altadis - Institut du Tabac, Bergerac, France
    Several trials the results of which are compiled in this paper, were carried out at the Tobacco Institute of Bergerac (ITB) and in the area nearby from 1996 to 2003. The objective was to study the formation of tobacco-specific nitrosamines (TSNA) in dark ...
  2. CORESTA Congress, Kyoto, 2004, AP 04

    Potential changes of TSNA composition in stored tobacco powder: consequences for sample preparation and ground tobacco storage

    DE ROTON C.; GIRARD C.; JACQUET L.; POISSON C.
    Altadis - Institut du Tabac, Bergerac, France
    A study carried out in 2003-2004 at the "Institut du Tabac de Bergerac" aimed at better defining how to dry moist samples of cured tobacco and how to keep the powder for TSNA analyses. Cured whole leaves of a burley variety were fine cut, ...
  3. CORESTA Meeting, Agronomy/Phytopathology, Bucharest, 2003, IG 01 ; CORESTA Meeting, Smoke Science/Product Technology, Freiburg, 2003, IG 02

    Burley variety, curing environment, nornicotine conversion and TSNAs accumulation

    DE ROTON C.; WAHLBERG I.; WIERNIK A.
    Altadis - Institut du Tabac, Bergerac, France
    In 2001 and 2002, two varieties of Burley tobacco, a nicotine to nornicotine converter (BB16NN), and a non-converter (ITB 501) were either primed or stalk-cut and air-cured in different curing environments: curing chambers with different O 2 ...
  4. 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 ...
  5. CORESTA Meeting, Agronomy/Phytopathology, Suzhou, 1999, AP40

    Influence of curing procedures and nornicotine potential on TSNA formation in three varieties of dark tobaccos

    DE ROTON C.; SAN L.H.; VIDAL B.
    SEITA, Institut du Tabac, Bergerac, France
    Due to their genotype and curing mode, air-cured tobaccos usually have a higher content in tobacco-specific nitrosamines (TSNA) than Virginia flue-cured varieties. Two studies were conducted at the Bergerac Institute in 1996 and 1997 to measure the effect ...
  6. Bull. Spec. CORESTA Congress, Yokohama, 1996, p. 116, A9

    Effects of the soil pH and form of nitrogen fertilisation on the uptake of trace-metals in Burley tobacco

    DE ROTON C.; TANCOGNE J.; CADILHAC J-L.
    SEITA, Institut du Tabac, Bergerac, France
    An experiment combining the soil pH factors and the form of nitrogen fertilisation was conducted in 1994 at the Bergerac Tobacco Institute, France. The experiment was carried out on a sandy soil on which adjunctions of dolomia (30% CaO + 20% MgO) were ...