Pyrrolizidine alkaloids of Heliotropium from Mexico and adjacent U.S.A.

H. Birecka, M. W. Frohlich, L. Hull, M. J. Chaskes

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The levels of alkaloids were determined in leaves and stems of 24 species of Heliotropium collected in Mexico and adjacent U.S.A. All species contained unsaturated pyrrolizidines, their content in leaves ranging from 0.003 to 0.18%. Saturated pyrrolizidine alkaloids were detected in nine species. Greenhouse-grown plants of five species had a significantly higher alkaloid content in their leaves than the corresponding field samples. In all these species, except for H. indicum, the differences were due to higher levels of saturated pyrrolizidines.

Original languageEnglish (US)
Pages (from-to)421-426
Number of pages6
Issue number3
StatePublished - 1980

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Plant Science
  • Horticulture


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