Development of a sensitive and quantitative method for the identification of two major furan fatty acids in human plasma
作者:Long Xu、Changfeng Hu、Yongguo Liu、Siming Li、Walter Vetter、Huiyong Yin、Yonghua Wang
DOI:10.1194/jlr.d119000514
日期:2020.4
accurate and sensitive quantitation method for the analysis of furan fatty acids. In particular, the sensitivity of GC/MS and UPLC/ESI/MS/MS was compared for the identification and quantification of furan fatty acids. Different methylation methods were tested with respect to GC/MS analysis. Special attention needs to be paid to the methylation of furan fatty acids, as acidic catalysts might lead to
本文着重于建立一种准确,灵敏的定量分析呋喃脂肪酸的方法。特别是,比较了GC / MS和UPLC / ESI / MS / MS的灵敏度,用于呋喃脂肪酸的鉴定和定量。针对GC / MS分析测试了不同的甲基化方法。需要特别注意呋喃脂肪酸的甲基化,因为酸性催化剂可能导致呋喃环降解。全扫描模式下的GC / MS分析表明定量限为10μM。UPLC / ESI / MS / MS在多反应监测模式下显示的检测灵敏度高于GC / MS。此外,使用两种广泛使用的吡啶鎓盐,以正模式测试了带电荷反转衍生化的呋喃脂肪酸的鉴定。N-(4-氨基甲基苯基)吡啶鎓作为衍生剂。与通过UPLC / ESI在负离子模式下进行非衍生化相比,由2-溴-1-甲基吡啶碘化物和3-甲醇-1-甲基吡啶碘化物衍生的生成的3-酰基-氧甲基-1-甲基吡啶碘化物的灵敏度提高了2,000倍以上。 / MS / MS。这种电荷逆转衍生化可实现人类血浆