Summary
The leaves ofRhus coriaria contain about 15–20% polyphenolic compounds. These are mostly hydrolysable tannins, with a central glucose unit, to which several gallic acid rests are bound depsidically. 5 to 10% of the total polyphenolic fraction however, consists of condensed tannins or flavonoids. This work studies the identity and the liquid chromatographic behaviour of these flavonoids. The presence of the dimeric flavonoids agathisflavone, amenthoflavone and hinokiflavone is proved. A new dimeric flavanoid (Sumaflavone) is tentatively identified.
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Van Loo, P., De Bruyn, A. & Verzele, M. On the liquid chromatography and identification of the flavonoids, present in the “sumach tannic acid” extracted fromRhus coriaria . Chromatographia 25, 15–20 (1988). https://doi.org/10.1007/BF02311521
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DOI: https://doi.org/10.1007/BF02311521