期刊论文详细信息
Bulletin of the Korean chemical society
Analysis of Fatty Acyl Groups of Diacyl Galactolipid Molecular Species by HPLC/ESI-MS with In-source Fragmentation
Jongki Hong1  Ji Hye Gil1  Joong Chul Choe1  Young Hwan Kim1 
关键词: Galactolipids;    Electrospray ionization (ESI);    Mass spectrometry;    High performance liquid chromatography (HPLC);    In-source fragmentation;   
DOI  :  
学科分类:化学(综合)
来源: Korean Chemical Society
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【 摘 要 】

The structures of molecular species of galactolipids, such as monogalactosyl diacylglycerol (MGDG) and digalactosyl diacylglycerol (DGDG), isolated from wheat flour have been investigated using negative-ion electrospray ionization (ESI) mass spectrometry interfaced with high performance liquid chromatography (HPLC). According to the result of HPLC analysis, MGDG and DGDG were found to consist of mixtures of five and four molecular species, respectively. The galactolipids have been also analyzed to determine their fatty acid compositions, using HPLC/ESI-MS combined with in-source (or cone voltage) fragmentation. HPLC/ ESI-MS is very useful for one-step analysis of mixtures of galactolipids with a small sample quantity. Especially, the carboxylate anions produced in in-source fragmentations of the negative-ion of each component separated by HPLC provide valuable information on the composition of its fatty acyl chains.

【 授权许可】

Unknown   

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