Transformations and antioxidative activities of lignans and stilbenes at high temperatures

Patrik Runeberg, Dmitry Ryabukhin, Lucas Lagerquist, Jani Rahkila, Patrik Eklund*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
49 Downloads (Pure)

Abstract

Thermal transformations of polyphenols from the lignan and stilbene families were investigated at temperatures ranging from 200 °C to 250 °C, in polyethylene glycol (PEG-400), dimethylformamide (DMF) and in sunflower oil (SO). The polyphenols showed varying degrees of thermal stabilities and in some cases intramolecular transformations were observed. The formed products were isolated and characterized. Oligomerization of the polyphenols at thermo-oxidative conditions was also investigated. Finally, the antioxidative activity of the polyphenols against thermo-oxidative degradation α-linoleic acid was investigated at 200 °C. The results suggested that the studied substrates retained their antioxidative properties at elevated temperatures, with stilbenes showing most efficient protection against thermo-oxidative degradation of polyunsaturated fatty acids.

Original languageEnglish
Article number134641
JournalFood Chemistry
Volume404, part B
DOIs
Publication statusPublished - 15 Mar 2023
MoE publication typeA1 Journal article-refereed

Keywords

  • 7-Hydroxy-secoisolariciresinol (PubChem CID: 44566585)
  • 7-Hydroxymatairesinol (PubChem CID: 10948757)
  • Antioxidants
  • Cyclolariciresinol (PubChem CID: 4177125)
  • Lariciresinol (PubChem CID: 332427)
  • Lignans
  • Matairesinol (PubChem CID:119205)
  • Pinosylvin (PubChem CID: 5280457)
  • Pinosylvin Monomethyl Ether (PubChem CID: 5281719)
  • Polyphenols
  • Resveratrol (PubChem CID: 445154)
  • Secoisolariciresinol (PubChem CID: 65373)
  • Stilbenes
  • Thermal transformation
  • α-Conidenrin (PubChem CID: 457194)

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