Pyrrolizidine Alkaloids in Foods, Herbal Drugs, and Food Supplements: Chemistry, Metabolism, Toxicological Significance, Analytical Methods, Occurrence, and Challenges for Future

Toxins (Basel). 2024 Feb 2;16(2):79. doi: 10.3390/toxins16020079.

Abstract

Consumers are increasingly seeking natural alternatives to chemical compounds, including the use of dried aromatic plants as seasonings instead of salt. However, the presence of pyrrolizidine alkaloids (PAs) in food supplements and dried plants has become a concern because of their link to liver diseases and their classification as carcinogenic by the International Agency for Research on Cancer (IARC). Despite European Union (EU) Regulation (EU) 2023/915, non-compliance issues persist, as indicated by alerts on the Rapid Alert System for Food and Feed (RASFF) portal. Analyzing PAs poses a challenge because of their diverse chemical structures and low concentrations in these products, necessitating highly sensitive analytical methods. Despite these challenges, ongoing advancements in analytical techniques coupled with effective sampling and extraction strategies offer the potential to enhance safety measures. These developments aim to minimize consumer exposure to PAs and safeguard their health while addressing the growing demand for natural alternatives in the marketplace.

Keywords: chromatography; dried plants; extraction; food supplements; mass spectrometry; metabolism; pyrrolizidine alkaloids; toxicology.

Publication types

  • Review

MeSH terms

  • Carcinogens
  • Dietary Supplements / analysis
  • Dietary Supplements / toxicity
  • Plants / chemistry
  • Pyrrolizidine Alkaloids* / chemistry
  • Pyrrolizidine Alkaloids* / toxicity

Substances

  • Pyrrolizidine Alkaloids
  • Carcinogens