Formation of the 5,6-epoxy derivatives of 7-liydroxy-cholesteryl 3β-acetates during peroxidation of cholesteryl acetate.

Authors

  • G. Lercker Institute of Agrarian Industries, University of Bologna
  • R. Bortolomeazzi Department of Food Science, University of Udine
  • L. Pizzale Department of Food Science, University of Udine

DOI:

https://doi.org/10.3989/gya.1999.v50.i3.655

Keywords:

Cholesteryl acetate, Epoxy-hydroxy derivatives, Thermal peroxidation.

Abstract


The thermal peroxidation of cholesteryl acetate (CA) generates many compounds, most of which have been identified in previous studies. The trimethylsilyl (TMS) derivatives of the thermodegradation products of the single hydroperoxides of CA (7α- and 7β-) gave GCMS spectra that were almost identical to those of the thermal peroxidation of CA, except for four compounds that were only detected as TMS derivatives. These substances were identified by comparing their mass spectra and their GC retention time against those of the four synthesized isomers of the epoxy-hydroxy derivatives of CA. The presence of a considerable amount of epoxy-hydroxy derivates of CA, especially at low-temperature degradations, provides an explanation for the formation of other substances that have been previously identified.

Downloads

Download data is not yet available.

Downloads

Published

1999-06-30

How to Cite

1.
Lercker G, Bortolomeazzi R, Pizzale L. Formation of the 5,6-epoxy derivatives of 7-liydroxy-cholesteryl 3β-acetates during peroxidation of cholesteryl acetate. grasasaceites [Internet]. 1999Jun.30 [cited 2021Dec.9];50(3):193-8. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/655

Issue

Section

Research