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Natural phenolic compounds, e.g. ellagitannins, gallotannins, and flavonoid glycosides, from the aerial parts of Erodium cicutarium ( Geraniaceae ) have been isolated and identified. The structures of these compounds were determined by conventional methods of analysis and confirmed by MS and NMR spectral analysis. The distribution of tannins and flavonoids in E. ciconium, E. cicutarium, E. manescavi , and E. pelargoniiflorum were examined by TLC on unmodified silica gel and on silica gel chemically modified with polar and nonpolar groups (HPTLC Si 60, HPTLC Si 60 LiChrospher, HPTLC diol, HPTLC CN, and HPTLC RP-18W).

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. J. Planar Chromatogr. 2008 21 83 88 Z. Lei , Monomeric Ellagitannins in Oaks

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., Lean, M.E.J. & Crozier, A. (2003): Analysis of ellagitannins and conjugates of ellagic acid and quercetin in raspberry fruits by LC-MS n . Phytochem. , 64, 617-624. Analysis of ellagitannins and conjugates of ellagic acid and

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Mullen, W. , Yokota, T. , Lean, M.E.J. & Crozier, A. (2003): Analysis of ellagitannins and conjugates of ellagic acid and quercetin in raspberry fruits by LC-MS n . Phytochem. , 64 , 617

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isolation of a new ellagitannin from the pellicle of the walnut. J. Am. Chem. Soc. , 80 , 2249-2252. Plant polyphenols. III. The isolation of a new ellagitannin from the pellicle of the walnut. J. Am

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. William , M. , Yokota , T. , Leanc , M.E.J. & Crozier , A. ( 2003 ): Analysis of ellagitannins and conjugates of ellagic acid and quercetin in raspberry fruits by LC-MS n . Phytochemistry , 64 , 617 – 624

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“polyphenol contents” showed surprisingly that there was some of the product which even contains no traces of ellagitannins [ 9 ]. It became an extremely important issue to have some quality control methods to ensure the authenticity. The sample

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