Rapid estimation of peroxide content of soybean oil by measuring thermoluminescence

Teruo Miyazawa, Kenshiro Fujimoto, Mikio Kinoshita, Riichiro Usuki

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Thermoluminescence measurements can serve as a simple and rapid procedure for the estimation of peroxide content of soybean oil. The thermoluminescence intensity, measured at 100°C, increases in proportion (r=0.978) to the peroxide value (from 0.5 to 18.0 meq/kg) of soybean oil, without any interference by the tocopherol contents. The emission spectrum had a maximum wavelength at around 440–480 nm, suggesting that excited triplet carbonyls formed during thermal decomposition of hydroperoxides are involved. The thermoluminescence measurement is readily available for the simple and rapid estimation of the peroxide content of soybean oil, with no need for chemical reagents and delicate skills.

Original languageEnglish
Pages (from-to)343-345
Number of pages3
JournalJournal of the American Oil Chemists’ Society
Volume71
Issue number3
DOIs
Publication statusPublished - 1994 Mar

Keywords

  • Lipid peroxidation
  • peroxide value
  • soybean oil
  • thermoluminescence

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry

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