Acrolein as a Major Volatile in the Early Stages of Fish Oil TAG Oxidation
Acrolein as a Major Volatile in the Early Stages of Fish Oil TAG Oxidation
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DOI：
10.5650/jos.ess17235
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发表时间：
2018-05-01
影响因子：
1.5
通讯作者：
Miyashita, Kazuo
中科院分区：
文献类型：
--
作者：
Shibata, Ako;Uemura, Mariko;Miyashita, Kazuo
众所周知，富含二十二碳六烯酸 (DHA) 和二十碳五烯酸 (EPA) 的鱼油即使在低氧化水平下也具有难闻的气味。因此，了解鱼油氧化早期形成的主要挥发物非常重要。固相微萃取（SPME）和静态顶空（SHS）方法的比较研究表明，从鱼油三酰甘油（TAG）氧化开始，2-丙烯醛（丙烯醛）作为主要挥发物形成。 SPME 萃取对每种挥发物的有效性因每种纤维而异。在本研究中使用的三种不同的 SPME 纤维中，羧烯/聚二甲基硅氧烷 (CAR/PDMS) 被认为是测量挥发物（包括丙烯醛）的更好纤维。本研究还表明，非选择性 SHS 方法可用于确定鱼油 TAG 氧化早期阶段的特征挥发物形成。
Fish oil rich in docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) is known to have an unpleasant smell, even at low oxidation levels. Therefore, it is highly important to know the major volatiles formed during the early stages of fish oil oxidation. Comparative study with solid-phase microextraction (SPME) and static headspace (SHS) methods showed that 2-propenal (acrolein) was formed as the major volatile from the beginning of fish oil triacylglycerol (TAG) oxidation. The effectiveness of SPME extraction on each volatile was different from each fiber. Among the three different SPME fibers used in the present study, carboxen/polydimethylsiloxane (CAR/PDMS) was determined to be a better fiber for measuring the volatiles, including acrolein. The present study also showed that the non-selective SHS method is useful for determining the characteristic volatile formation in the early stages of fish oil TAG oxidation.