| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5165504 | Phytochemistry | 2012 | 11 Pages |
Abstract
⺠Mass spectrometry investigation into the proanthocyanidins in commercial quebracho extract. ⺠Extract does not contain detectable quantities of robinetinidol as monomer or as part of an oligomer. ⺠The starter unit in our sample was thus always catechin and the extender units always ent-fisitinedol. ⺠Quebracho extract consists of 33% dimers, 37% trimers, 21% tetramers, 8% pentamers, and 1% heptamers. ⺠A degree of polimerization of 3.1 was calculated from the intensity of MS fragments.
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Authors
Pieter B. Venter, Mirek Sisa, Marthinus J. van der Merwe, Susan L. Bonnet, Jan H. van der Westhuizen,