A study on the influence of fucosterol on thermal polymerisation of purified high oleic sunflower triacylglycerols

Anna Maija Lampi, Lena H. Dimberg, Afaf Kamal-Eldin

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Δ5-Avenasterol, an ethylidene side-chain phytosterol, was described as an antipolymerisation agent for thermooxidised oils. This paper investigates the potential of its commercially available geometrical isomer, fucosterol, as an antipolymerisation agent for high oleic sunflower oil (HOSO). Purified triacylglycerols were prepared from HOSO and incubated in an oven, at 180°C, with or without fucosterol, sitosterol and stigmasterol. Analysis of polymers and dimers (by high-performance size exclusion chromatography) showed that fucosterol did not affect the rate of polymerisation of purified HOSO triacylglycerols in our model. Comparison with α-tocopherol, showed that this tocol inhibited the polymerisation of the oil while fucosterol did not.

Original languageEnglish
Pages (from-to)573-579
Number of pages7
JournalJournal of the Science of Food and Agriculture
Volume79
Issue number4
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

Keywords

  • Antipolymerisation
  • Fucosterol
  • High oleic sunflower triacylglycerols
  • Δ-avenasterol

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Agronomy and Crop Science
  • Nutrition and Dietetics

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