Triacylglycerols Oxidation in Oils and Fats Monitored by Easy Ambient Sonic‐Spray Ionization Mass Spectrometry

• DOI: 10.1007/s11746-012-2010-5
• Publication Date: 2012-01-25T04:41:21Z
• Authors: R. C. Simas; D. Barrera‐Arellano; M. N. Eberlin; R. R. Catharino; V. Souza; R. M. Alberici
• Keywords: Ambient ionization; Lipid Oxidation; Edible oil

Abstract Oxidation is the major cause of fat and oil deterioration which produces rancid unpleasant flavors that drastically reduces their quality nutritional value. The primary oxidation products are triacylglycerols (TAG) containing unsaturated fatty acyl hydroperoxides formed by a chain process occurring through free radical intermediates. Rancimat method currently gold standard for measuring oxidative stability oils fats. In this report, easy ambient sonic‐spray ionization mass spectrometry (EASI‐MS) demonstrated to function as direct (no pre‐separation or sample preparation steps), fast accurate monitor fats oxidation, providing detailed overviews most immediate TAG hydroperoxide products. EASI‐MS results were compared those obtained via classical test.