Oxidative Stability and Volatile Formations in Linoleic Acid‐D2O Models in the Presence of Deuteron or Electron Donors. (22nd September 2017)

• Record Type: Journal Article
• Authors: Oh, Sumi; Lee, Chankyu; Kim, SungHwa; Choi, HyungSeok; Kim, Mi‐Ja; Lee, JaeHwan
• Is Part Of: Journal of the American Oil Chemists' Society. Volume 94:Number 11(2017)
• Page Start: 1385
• Page End: 1392
• Publication Date: 2017-09-22
• Subjects: Deuteron donor -- Electron donor -- Deuterium oxide -- Lipid oxidation -- Volatile formation; Oils and fats -- Periodicals; Soap -- Periodicals; Fats -- Periodicals; Food-Processing Industry -- Periodicals; Acides gras -- Périodiques; Aliments -- Industrie et commerce -- Périodiques; Huiles et graisses -- Périodiques; Savon -- Périodiques; Oliën; Chemie; Oils and fats; Soap; Periodicals; 547.77
• DOI: 10.1007/s11746-017-3044-5
• Languages: English
• ISSNs: 0003-021X

Abstract

Abstract: Effects of deuteron (D + ) and electron donors on the oxidative stability in linoleic acid–water model systems were evaluated by analyzing headspace oxygen content and headspace volatiles. Acetic acid‐ d and tetrakis(dimethylamino)ethylene (TDAE) were selected as a deuteron and an electron donor, respectively. Samples containing acetic acid‐ d had significantly lower headspace oxygen content than controls while those containing TDAE had significantly higher headspace oxygen content ( p < 0.05). Combination of acetic acid‐ d and TDAE accelerated the consumption of headspace oxygen. Volatiles including t ‐2‐heptenal, 2‐octenal, or 2, 4‐octadienal had higher mass to charge ratio ( m / z ) of (molecular weight +1)/molecular weight in samples with deuterium oxide than in samples with deuterium free water. However, no significant difference was observed in the m / z ratio of (molecular weight +1)/molecular weight of those volatiles among samples with or without deuteron or electron donors. Also, lipid hydroperoxides with deuterium, were not found in samples containing deuterium oxide and acetic acid‐ d . Therefore, added acetic acid‐ d may not be involved on the formation of lipid hydroperoxides and volatiles directly.