Roburin A Explained

Roburin A is a tannin found in oak wood (Quercus robur and Quercus petraea[1] or Quercus alba[2]) or oak cork (Quercus suber[3]).

It is a dimeric compound, composed of two vescalagin subunits probably linked through an ether bond between the diphenoyl group (hexahydroxydiphenic acid or HHDP) of one subunit and the triphenoyl moiety (nonahydroxytriphenic acid) of the other one.[4]

Notes and References

  1. 10.1139/x98-066 . Variability of wood extractives among Quercus roburand Quercus petraeatrees from mixed stands and their relation to wood anatomy and leaf morphology . Canadian Journal of Forest Research . 28 . 7 . 994–1006 . 1998 . Mosedale . J R . Feuillat . F . Baumes . R . Dupouey . J-L . Puech . J-L.
  2. 10.1021/jf070151m . 17444655 . Identification and Sensory Evaluation of Dehydro- and Deoxy-ellagitannins Formed upon Toasting of Oak Wood (Quercus alba L.) . Journal of Agricultural and Food Chemistry . 55 . 10 . 4109–18 . 2007 . Glabasnia . Arne . Hofmann . Thomas.
  3. 10.1021/jf9709360 . Changes in Tannic Composition of Reproduction Cork Quercus suberthroughout Industrial Processing. Journal of Agricultural and Food Chemistry . 46 . 6 . 2332–6 . 1998 . Cadahía . Estrella . Conde . Elvira . Fernández De Simón . Brígida . García-Vallejo . María Concepción.
  4. 10.1016/0031-9422(91)84148-L . Roburin A, A dimeric ellagitannin from heartwood of Quercus robur . Phytochemistry . 30 . 329–32 . 1991 . Herve du Penhoat . Catherine L.M. . Michon . Veronique M.F. . Ohassan . Abdelhamid . Peng . Shuyun . Scalbert . Augustin . Gage . Douglas. 1 . 1991PChem..30..329H .

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