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Analysis of proanthocyanidins in tea samples I.LC-MS results

I.LC-MS results
  • Andrea Kiehne
  • Christiane Lakenbrink
  • U. H. Engelhardt
ORIGINAL PAPER

Abstract

 At least 12 proanthocyanidins could be identified in green tea samples by means of HPLC-MS and HPLC-DAD after a clean-up procedure including polyamide column chromatography. The fragmentation pattern under thermospray conditions is briefly discussed. Epiafzelechin gallate-epicatechin gallate (EAG-ECG), which has not been described before, was tentatively identified. Two different dimers with another MS-fragmentation pattern in black tea samples were tentatively identified as bisflavanols A and B.

Key words Proanthocyanidins Tea HPLC-MS 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Andrea Kiehne
    • 1
  • Christiane Lakenbrink
    • 1
  • U. H. Engelhardt
    • 1
  1. 1.Institut für Lebensmittelchemie der Technischen Universität Carolo-Wilhelmina, Schleinitzstrasse 20, D-38106 Braunschweig, GermanyDE

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