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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Strategies for UHPLC-MS/MS-Based Analysis of Different Classes of Acyl Chain Oxidation Products Resulting from Thermo-Oxidation of Sitostanyl Oleate
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Strategies for UHPLC-MS/MS-Based Analysis of Different Classes of Acyl Chain Oxidation Products Resulting from Thermo-Oxidation of Sitostanyl Oleate

机译：由酪冬甲的热氧化产生的不同类别酰基氧化产物的UHPLC-MS / MS基于酰基氧化产物的策略

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摘要

Phytostanyl fatty acid esters, which are being added to a variety of foods owing to their cholesterol-lowering properties, are susceptible to thermally induced oxidation reactions. Using sitostanyl oleate as an example, we, in this study, aimed at developing strategies for the detection and the quantitation of acyl chain oxidation products (ACOPs). The elaborated ultra high performance liquid chromatography-mass spectrometry MS/MS-based approach involves (i) derivatizations of hydroxy and oxo groups, (ii) combined use of atmospheric pressure chemical ionization and electrospray ionization as ionization techniques, and (iii) establishment of selective multireaction monitoring transitions. These strategies allow the identification of a broad spectrum of nonpolar short-chain as well as polar short- and long-chain hydroxy, epoxy, and oxo ACOPs. Semiquantitative assessments showed that sitostanyl 9,10-epoxystearate was the predominating ACOP resulting from thermo-oxidation of sitostanyl oleate at 180 degrees C for 30 min. The elaborated analytical approach paves the way to narrow the existing knowledge gap on the fate of phytostanyl fatty acid esters upon heat treatments.
机译：由于其胆固醇降低性能而被添加到各种食物中的植物甾烷基脂肪酸酯易受热诱导的氧化反应的影响。在本研究中，使用Sitostanyl Oleate作为一个例子，我们旨在开发酰基链氧化产物的检测和定量策略（ACOPS）。阐述的超高效液相色谱 - 质谱MS / MS基方法涉及（i）羟基和氧代基团的衍生化，（ii）将大气压化学电离和电喷雾电离的组合用作电离技术，（iii）建立选择性多渊监测过渡。这些策略允许鉴定广谱的非极性短链以及极性短链和长链羟基，环氧树脂和氧代ACOPS。半定量评估表明，Siatostanyl 9,10-环氧化合物是由180℃下沥淀粉的热氧化在180℃下得到30分钟的占优势Acop。制定的分析方法铺设了缩小热处理时植物脂肪酸酯的命运的现有知识间隙的方式。

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