Birch inner bark procyanidins can be resolved with enhanced sensitivity by hydrophilic interaction HPLC-MS
- 14 October 2011
- journal article
- research article
- Published by Wiley in Journal of Separation Science
- Vol. 34 (22), 3158-3165
- https://doi.org/10.1002/jssc.201100569
Abstract
A complex mixture of procyanidin aglycones was isolated by Sephadex LH-20 column chromatography from the silver birch inner bark, which is a polyphenol-rich source of natural antioxidants. Procyanidins were studied by using hydrophilic interaction liquid chromatography combined with high-resolution ESI-TOF-MS. A good chromatographic separation was achieved and procyanidins eluted according to their increasing degree of polymerization. Individual procyanidins were detected from dimers up to the degree of polymerization of 22 by their negative-ion mass spectra. The results showed that hydrophilic interaction liquid chromatography can be successfully applied for the analysis of high-molecular-weight procyanidins with enhanced sensitivity in electrospray mass spectrometry.Keywords
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