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- W1963529595 abstract "Abstract Thirteen synthetic triacylglycerols (TAG) containing eicosapentaenoic acid (EPA) or docosahexaenoic acid (DHA) were oxidized in the presence of 2,2′‐azobis(2,4‐dimethyl‐valeronitrile) (AMVN) and 2,2′‐azobis(2‐amidinopropane)dihydrochloride (AAPH) as aqueous and nonaqueous radical initiators to investigate the influence of TAG structure and oxidation system on the oxidative stability of TAG that contain highly unsaturated fatty acids (HUFA). A 2:1 (mol/mol) mixture of trieicosapentaenoylglycerol and tripalmitoylglycerol was most susceptible to the AMVN‐initiated oxidation among three types of TAG that contained EPA and palmitic acid (2:1, mol/mol). Compared with 1,2 (or 2,3)‐dieicosapentaenoyl‐3(or 1)‐palmitoylglycerol (EEP) and 1,3‐dieicosapentaenoyl‐2‐palmitoylglycerol (EPE), the oxidative rate of EEP was somewhat higher. A similar result was obtained for DHA‐containing TAG. The oxidative rate of TAG that contained EPA and palmitic acid (1:2, mol/mol) showed a positive correlation with the amount of EPA in a single TAG molecule. Moreover, in the nonaqueous system, the oxidative rate of EPA‐containing TAG was affected by unsaturation and carbon chainlength of constituent fatty acids. In the AAPH‐initiated oxidation in the aqueous system, the oxidative rate of TAG with EPA and palmitic acid was higher with the increased quantity of EPA in a single TAG molecule. Also, constituent fatty acids modified the oxidative rate of EPA‐containing TAG in an aqueous system. The glycerol position of EPA and DHA also affected the oxidative rate of the TAG. EPA and DHA located at the 1,2 (or 2,3)‐position of glycerol were more oxidizable than those at the 1,3‐position during AAPH‐initiated oxidation. Thus, 1,2(or2,3)‐dipalmitoyl‐3(or 1)‐eicosapentaenoylglycerol was oxidized faster than 1,3‐dipalmitoyl‐2‐eicosapentaenoylglycerol. These observations suggest that the oxidative stability of TAG that contain HUFA could be modulated by the oxidation system and TAG structure." @default.
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- W1963529595 date "1997-09-01" @default.
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- W1963529595 title "Oxidation of synthetic triacylglycerols containing eicosapentaenoic and docosahexaenoic acids: Effect of oxidation system and triacylglycerol structure" @default.
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- W1963529595 doi "https://doi.org/10.1007/s11746-997-0022-3" @default.
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