Study on oxidation degradation products of linoleic acid
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(Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, Changsha University of Science and Technology, Changsha, Hunan 410114, China)

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    Abstract:

    GC—MS was applied to identify the acceleration of oxidative products formed from linoleic acid stored at 60 ℃. Both volatile and non-volatile oxidates were focus on in the present study. The results showed that the oxidative products formed in the primary oxidation stage were continuously oxidized into volatiles (such as aldehydes, ketones, alcohols, furan, etc.) during the course of accelerated oxidation. The relative contents of Hexanal, (E)-2-Heptena, (E)-2-Nonena, (E)-3-Nonene-2-one, 2-pentyl Furan changed obviously before 12 h and they could be used as evaluation indices of the primary autoxidation of linoleic acid. However, the relative contents of (E, E)-2, 4-Nonadienal, (E, E)-2, 4-Decadienal and (E)-1-octene-3-ol changed apparently after 24 h and they could be used as evaluation indices of secondary autoxidation of linoleic acid. Thus, the present study uncovered the potential oxidative products and possible evaluation indices of linoleic acid autooxidative at different oxidative stages, and provided a theoretical basis for concrete approach and mechanism research for autoxidation of unsaturated fatty acids.

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王建辉,王秀,陈奇,等.氧化分解过程中亚油酸组成成分及挥发性物质的变化[J].食品与机械英文版,2016,32(5):5-10.

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History
  • Received:December 29,2015
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  • Online: March 09,2023
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