Abstract
A competitive enzyme immunoassay (EIA), using anti-nornicotine antibodies is described. The specificity of these antibodies was checked by a high pressure liquid chromotographic (HPLC) procedure. Following purification, the alkaloid extracts were simultaneously analysed by EIA and HPLC and similar results were obtained. The high sensitivity of EIA and its good specificity toward the major tobacco alkaloids enabled us to perform analysis on crude extracts prepared from very small samples (ca. 1 mg dry weight) of plant material. The method can therefore be applied to the localization of alkaloids in Nicotiana plants and cell suspensions.
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