Journal of the American Oil Chemists' Society

, Volume 80, Issue 10, pp 963–970 | Cite as

Pyrrolizidine alkaloid content in crude and processed borage oil from different processing stages

  • Inger Wretensjö
  • Bo KarlbergEmail author


The pyrrolizidine alkaloid content of crude borage oil and borage oil from different processing stages was determined by GC-MS. The results showed that no pyrrolizidine alkaloids were present above a detection limit of 20 ppb. The reduction factors for pyrrolizidine alkaloids at various stages in the oil refining process were determined by means of spiking experiments using the commercially available pyrrolizidine alkaloid crotaline. It was shown that the pyrrolizidine content in crude borage oil was reduced overall by a factor of about 30,000 in the refining process.

Key Words

Borage oil pyrrolizidine alkaloids GC-MS 


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Copyright information

© AOCS Press 2003

Authors and Affiliations

  1. 1.Department of Analytical ChemistryStockholm UniversityStockholmSweden

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