Analysis of phenolic choline esters from seeds of<i>Arabidopsis thaliana</i>and<i>Brassica napus</i>by capillary liquid chromatography/electrospray- tandem mass spectrometry
作者:Christoph Böttcher、Edda von Roepenack-Lahaye、Jürgen Schmidt、Stephan Clemens、Dierk Scheel
DOI:10.1002/jms.1522
日期:2009.4
selected representatives. The compounds identified so far include substituted hydroxycinnamoyl‐ and hydroxybenzoylcholines, respective monohexosides as well as oxidative coupling products of phenolic choline esters and monolignols. Phenolic choline esters are well separable by reversed‐phase liquid chromatography and sensitively detectable using electrospray ionization mass spectrometry in positive ion
从拟南芥和甘蓝型油菜种子制得的总胆碱酯级分通过毛细管LC / ESI-QTOF-MS和直接输注ESI-FTICR-MS进行分析。除了主要的芥子碱胆碱外,还可以基于精确的质量测量,碰撞诱导解离(CID)质谱的解释以及选定代表的合成,鉴定出30种酚类胆碱酯。迄今为止鉴定出的化合物包括取代的羟基肉桂酰基和羟基苯甲酰胆碱,各自的单己糖苷以及酚类胆碱酯和单木酚的氧化偶联产物。苯酚胆碱酯类可通过反相液相色谱很好地分离,并且可使用电喷雾电离质谱法以正离子模式灵敏地检测到。从分子离子获得的CID质谱图有助于表征此类化合物的类型和取代形式。因此,LC / ESI-MS / MS是对该化合物类别进行全面定性和定量分析的宝贵工具。版权所有©2008 John Wiley&Sons,Ltd.