Effect of sample solubilized aliquot volume and concentration on hydroperoxide detection in PUFA-rich fish oil

Violeta Ugalde-Benítez, Arturo Rojo-Domínguez, María Eugenia Jaramillo-Flores, Isabel Guerrero-Legarreta

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The objective of this work was to study the effect of sample oil concentration and volume on hydroperoxide determination in n-3 PUFA-rich sardine-anchovy oil. Oil samples were stored at-20°C, 6 d, air-free (T1); and 20°C, 2 d in air (T2). Significant differences between storage conditions were observed on hydroperoxide concentration. High reproducibility was obtained even in sample concentrations as low as 5 mg oil/mL of propan-1-ol. A high correlation was observed between the modified ferrous oxidation-xylenol orange method (FOX2) and AOAC peroxide value analysis methods, although FOX2 was faster, more sensitive, and precise when analyzing small hydroperoxide concentrations.

Original languageEnglish
Pages (from-to)650-660
Number of pages11
JournalInternational Journal of Food Properties
Volume17
Issue number3
DOIs
StatePublished - 16 Mar 2014

Keywords

  • Fish oil
  • Hydroperoxides
  • Lipid oxidation
  • n-3 Fatty acids

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