Pyrrolizidine alkaloids of Echium vulgare honey found in pure pollen.

@article{Boppr2005PyrrolizidineAO,
  title={Pyrrolizidine alkaloids of Echium vulgare honey found in pure pollen.},
  author={M. Boppr{\'e} and S. Colegate and J. Edgar},
  journal={Journal of agricultural and food chemistry},
  year={2005},
  volume={53 3},
  pages={
          594-600
        }
}
The pyrrolizidine alkaloids previously identified in floral honey attributed to Echium vulgare (Boraginaceae) have been detected (8000-14 000 ppm) in pure pollen collected from the anthers of Echium vulgare. Pyrrolizidine alkaloids and/or their N-oxides were isolated from the aqueous acid extracts of pollen by use of strong cation-exchange, solid-phase extraction and identified by liquid chromatographic/mass spectrometric (LCMS) analysis. The pyrrolizidine alkaloids in the pollen are present… Expand
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