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  1. Bull. Spec. CORESTA Congress, Lisbon, 2000, p. 178, S2

    New methodologies for tobacco alkaloids determination

    LOURENCO M.G.; MATOS A.; JONES N.M.; OLIVEIRA M.C.; BERNARDO-GIL M.G.
    CIAT - DAIAT - Instituto Superior de Agronomia, Lisboa, Portugal.
    Taking in account recent progress in ultrasonic and microwave extraction techniques, the applicability of such methodologies to the extraction of tobacco alkaloids from cured tobacco was optimised and compared with the conventional ones, namely steam ...
  2. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 105, A1, ISSN.0525-6240

    An approach on the effects of nitrogen fertilization and antioxidant addition on the alkaloids content of flue-cured tobacco in Portugal

    LOURENCO M.G.; FERRAO J.E.M.; FIGUEIREDO E.T.L.; AMARO J.A.T.; ROCHA M.E.V.
    Universidade Technica de Lisboa, Instituto Superior de Agronomia, Lisboa, Portugal.
    For three years a study on the influence of different forms of nitrogen fertilization on the alkaloids content of flue-cured tobacco was carried out in Portugal. In order to prevent the nitrosamines formation, the tobacco leaves were treated with some ...
  3. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 183, S9, ISSN.0525-6240

    Tobacco in Portugal _ Looking back to its history

    FERRAO J.E.M.; ROCHA M.E.V.
    Universidade Technica de Lisboa, Instituto Superior de Agronomia, Lisboa, Portugal.
    This paper aims to give a general view, not only over the historical past, but also an outlook of the Portuguese current reality. During the discoveries period, the Europeans found out that tobacco was already widely used by the American Indians. The ...