Identification of radicals spin‐trapped in autoxidized linoleic acids: A high performance liquid chromatography and electron spin resonance study

<jats:title>Abstract</jats:title><jats:p>Radicals generated in linoleic acid and deuterated linoleic acid have been trapped by the spin trap 2‐methyl‐2‐nitroso‐propane (MNP) and identified by electron spin resonance (ESR) and ENDOR spectroscopy. The formation of two distinct secondary alkyl radical adducts (one conjugated, the other non‐conjugated, as shown by their UV absorption spectra) was demonstrated by 11, 11‐dideuterio‐9‐<jats:italic>cis</jats:italic>‐12‐<jats:italic>cis</jats:italic>‐linoleic acid using HPLC and ESR spectroscopy.</jats:p>