Abstract
Thirty one species were examined for the presence of nicotianamine by automatic amino acid analysis. Nicotianamine was detected in amounts up to 22 μmoles per 100 g fresh weight in the majority of the samples. Negative results were obtained with Escherichia coli, Euglena gracilis, Scenedesmus acutus and Saccharomyces sp. Among higher plants Allium cepa was found to contain only traces of nicotianamine, whereas its concentration was high in other Liliaceae (Polygonatum odoratum, Maianthemum bifolium). Analyses of the same species from different sources and of different species from the same genus revealed big differences. Contrary to previous results nicotianamine was detected in fungi, liverworts, mosses, lycopods and horsetails. A correlation between taxonomic order and nicotianamine concentration was not observed.
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