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Precursor ion scan driven fast untargeted screening and semi-determination of caffeoylquinic acid derivatives in Cynara scolymus L.

Journal name：Food Chemistry
Literature No.：
Literature Url： http://www.sciencedirect.com/science/article/pii/S0308814614009169
Date publication：1 January 2015

Precursor ion scan driven fast untargeted screening and semi-determination of caffeoylquinic acid derivatives in Cynara scolymus L.

Qing Shen, Yanbin Lu, Zhiyuan Dai , Hon-Yeung Cheung ,

Abstract

A precursor ion scan (PIS) technique based strategy was developed for rapid screening and semi-determination of caffeoylquinic acid derivatives (CADs) in artichoke (Cynara scolymus L.) using ultra-performance liquid chromatography (UPLC) coupled with tandem mass spectrometry. 1,5-Dicaffeoylquinic acid and 5-caffeoylquinic acid were used for studying the fragmentation behaviour of two classes of CADs, setting m/z 191 as a diagnostic moiety. When it was applied to artichoke sample, ten CADs were detected and elucidated in a single PIS run. Furthermore, method validation was implemented including: specificity (no interference), linearity (?0.9993), limit of detection

Standards of four CA isomers and six DCA isomers were obtained from BioPurify, Co. Inc (Chengdu, China).