LC/MS/MS Characterization of Phenolic Constituents in Dried Plums

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• 作者：Nianbai Fang ; Shanggong Yu ; and Ronald L. Prior
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2002
• 出版时间：June 5, 2002
• 年：2002
• 卷：50
• 期：12
• 页码：3579 - 3585
• 全文大小：98K
• 年卷期：v.50,no.12(June 5, 2002)
• ISSN：1520-5118

文摘

Dried plums are known as a healthy food in the West and used as medicine in India. They havebeen characterized by high concentrations of phenolic compounds, which are believed to play acrucial role in protection against various age-related diseases. Liquid chromatography/massspectrometry/mass spectrometry (LC/MS/MS) with four different conditions was used to analyze thephytochemicals in commercial dried plums. The major components were neochlorogenic acid andcryptochlorogenic acid. Forty minor components were characterized by their MS/MS spectra and LCretention time. Six of them are novel ester isomers formed by two caffeic acids and one quinic acid.The diagnostic fragmentation patterns of different phenolics are presented on the basis of electrosprayionization (ESI) MS/MS data of components in dried plums and fourteen authentic standards.Keywords: Dried plums; Prunus domestica; hydroxycinnamic acids; chlorogenic acid isomers;LC/MS/MS; MS diagnostic fragmentation pattern