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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