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How to distinguish between cinnamoylshikimate esters and chlorogenic acid lactones by liquid chromatography–tandem mass spectrometry

✍ Scribed by Rakesh Jaiswal; Marius Febi Matei; Frank Ullrich; Nikolai Kuhnert

Book ID
102381170
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
416 KB
Volume
46
Category
Article
ISSN
1076-5174

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✦ Synopsis

In this study, liquid chromatography-tandem mass spectrometry (LC-MS(n); n = 2-3) has been used to characterize and distinguish chlorogenic acid lactones from cinnamoylshikimate esters. This is the first time when an LC-MS(n) method has been developed to distinguish between these two isomeric classes of compounds formed in particular in food processing from chlorogenic acids at elevated temperature through loss of water. The structures of regioisomeric chlorogenic acid lactones and shikimate esters have been assigned on the basis of LC-MS(n) patterns of fragmentation, relative hydrophobicity, and fragmentation analogy with the synthetic standards of dimethoxycinnamic, ferulic, and caffeic acid containing monoacyl chlorogenic acid lactones and shikimate esters.

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