High resolution tandem mass spectrometer coupled to ultrahigh performance liquid chromatography

我们的目标是获得一个由超高性能液相色谱仪和高分辨率串联质谱仪组成的分析系统。色谱系统应包括二元高压溶剂泵、温控柱温箱、带可冷却样品室的自动进样系统以及二极管阵列检测器。用于高分辨率质谱系统的高质量准确度和灵敏度，用于测定低丰度和未知化合物的准确分子质量​​。此外，该系统必须包括串联质谱的选项，并且离子迁移谱数据的并行采集将是有益的。一个重要的方面是用于数据处理和结果数据解释的强大软件解决方案。新系统的主要应用在于对复杂生物和食品样品中的脂质和其他小分子进行非目标分析。重点之一是评估食品制备和加工过程中脂质组的变化以及由此产生的氧化脂质的测定。除其他应用外，该系统将用于创建脂质氧化产物的系统数据库，并提高对食品中形成哪些化合物以及制备条件如何影响形成的了解。其他项目涉及生物活性食品成分及其代谢物的表征、糖降解产物的结构阐明以及评估大脑中脂质系统与精神疾病相关的作用。

We aim to acquire an analytical system consisting of a ultra high performance liquid chromatograph and a high resolution tandem mass spectrometer. The chromatographic system should include a binary high pressure solvent pump, temperature-controlled column compartment, an automatic injection system with coolable sample compartment as well as a diode array detector. For the high resolution mass spectrometry system high mass accuracy and sensitivity for the determination of accurate molecular masses of low abundant and unknown compounds. Furthermore, the system must include the option for tandem mass spectrometry and the parallel acquisition of ion mobility spectrometry data would be beneficial. An important aspect is also a powerful software solution for data processing and interpretation of the resulting data.The principal applications for the new system lie in the untargeted analysis of lipids and other small molecules in complex biological and food samples. One focus is on the assessment of lipidome changes during the preparation and processing of food and the determination of the resulting oxidized lipids. The system will, among other applications, be used to create a systematic database with of lipid oxidation products and to improve the understanding which compounds are formed in food and how the preparation conditions influence the formation. Further projects deal with the characterization of bioactive food constituents and their metabolites, the structural elucidation of sugar degradation products as well as to assess the role of lipid systems in the brain in connection with mental illnesses.