Author
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FANG, N - UAMS |
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YU, S - ACNC |
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Prior, Ronald |
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Submitted to: Journal of Agricultural and Food Chemistry
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 4/10/2002 Publication Date: 5/11/2002 Citation: Fang, N., Yu, S., Prior, R.L. 2002. Lc/ms/ms characterization of phenolic constituents in dried plums. Journal Of Agricultural And Food Chemistry. 50 (12):3579-3585. Interpretive Summary: Dried plums are known as a healthy food in the West and used as medicine in India. They have been characterized by high concentrations of phenolic compounds, which are believed to play a crucial role for protection against various age-related diseases. This study revealed two major components and forty minor components in dried plums. Six of them are novel ester isomers formed by two caffeic acids and one quinic acid. The esters might be interesting for nutriceutical use. Technical Abstract: Dried plums are known as a healthy food in the West and used as medicine in India. They have been characterized by high concentrations of phenolic compounds, which are believed to play a crucial role in protection against various age-related diseases. Liquid chromatography/mass spectrometry/mass spectrometry (LC/MS/MS) with four different conditions was used to analyze the phytochemicals in commercial dried plums. The major components were neochlorogenic acid and cryptochlorogenic acid. Forty minor components were characterized by their MS/MS spectra and LC retention 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 electrospray ionization (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 |
