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Updated: Aug 19, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Chromatographic separation and automated analysis of flavanols
1Research Laboratory, A. Guinness Son & Co. (Dublin) Ltd., St. James's Gate, Ireland.
Abstract:
Flavanols from barley or hops were separated chromatographically and assayed automatically by reaction with the chromogen, 4-dimethylaminocinnamaldehyde. For separating the flavanols on Sephadex G-25, gradient elution with water-methanol mixtures was necessary. The chromogen was specific for flavanols and well suited to AutoAnalyzer methods. The method appears generally applicable in flavanol analysis of plant materials.
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