STRUCTURE ELUCIDATION OF THREE DIMERIC PROANTHOCYANIDINS ISOLATED FROM A COMMERCIAL BELGIAN PILSNER BEER
Open Access
- 6 May 1984
- journal article
- research article
- Published by The Institute of Brewing & Distilling in Journal of the Institute of Brewing
- Vol. 90 (3), 153-161
- https://doi.org/10.1002/j.2050-0416.1984.tb04256.x
Abstract
1H n.m.r., mass spectrometry and circular dichroism of their methyl ether diacetates establish the structure of three dimeric beer proanthocyanidins as (2R, 3S, 4S; 2R, 3S)-{4,8}-bi-{(+)-catechin} (procyanidin B3), (2S, 3S, 4S; 2R, 3S)-{4,8}-{(+)-epigallocatechin-(+)-catechin} (prodelphinidin B9, novel compound) and (2R, 3S, 4S; 2R, 3S)-{(+)-gallocatechin-(+)-catechin} (prodelphinidin B3).Keywords
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