A method for determination of at least one of the lipid species in a biological sample comprising subjecting the sample to lipid extraction to obtain a lipid extract and subjecting the resulting lipid extract to multidimensional electrospray ionization mass spectrometry using either precursor ion or neutral loss scanning (or both) of all naturally occurring aliphatic chains, lipid fragments and precursor ions leading to observed fragments to generate a multidimensional matrix whose contour densities provides structural and quantitative information directly without chromatography. A method for determination of lipid content and/or lipid molecular species composition and quantity directly from lipid extracts of a biological sample comprising subjecting said lipid extract to electrospray ionization multidimensional mass spectrometry by comparisons to standards and algorithms described herein.
一种测定
生物样品中至少一种脂质种类的方法,包括对样品进行脂质提取以获得脂质
提取物,并对所获得的脂质
提取物进行多维电喷雾离子化质谱分析,使用前体离子或中性损失扫描(或两者)对所有天然存在的脂肪族链、脂质片段和导致观察到的片段的前体离子进行扫描,以生成多维矩阵,其轮廓密度可直接提供结构和定量信息,而无需色谱法。一种直接从
生物样品的脂质
提取物中测定脂质含量和/或脂质分子种类组成和数量的方法,包括将所述脂质
提取物置于电喷雾电离多维质谱仪中,与本文所述标准和算法进行比较。