A NEW COLOURIMETRIC ASSAY FOR FLAVANOIDS IN PILSNER BEERS
Open Access
- 2 January 1985
- journal article
- research article
- Published by Chartered Institute of Brewers and Distillers in Journal of the Institute of Brewing
- Vol. 91 (1) , 37-40
- https://doi.org/10.1002/j.2050-0416.1985.tb04303.x
Abstract
A new colourimetric assay (based upon the reaction of their A-rings with the chromogen p-dimethylaminocinna-maldehyde) has been developed for flavanoids in beer. The flavanoid content for 19 different Belgian Pilsner beers by this method varied between 4·8 and 39·5 mg/litre with a mean of 26·3 mg/litre. These results were compared with the analytical data for total polyphenolics (EBC, Singleton), anthocyanogens (Jerumanis), and flavanoids (vanillin procedure). Good correlations existed between the results by the new method and the analytical data for total polyphenolics (EBC) and anthocyanogens (Jerumanis). Analysis by the new assay requires only one reagent and it is clear from the analytical data that the method is highly reproducible and sensitiveKeywords
This publication has 13 references indexed in Scilit:
- STRUCTURE ELUCIDATION OF THREE DIMERIC PROANTHOCYANIDINS ISOLATED FROM A COMMERCIAL BELGIAN PILSNER BEERJournal of the Institute of Brewing, 1984
- FLAVOUR AND HAZE STABILITY DIFFERENCES IN UNHOPPED AND HOPPED ALL-MALT PILSNER BEERS BREWED WITH PROANTHOCYANIDIN-FREE AND WITH REGULAR MALTJournal of the Institute of Brewing, 1984
- CONTENTS OF SIMPLE, POLYMERIC AND COMPLEXED FLAVANOLS IN WORTS AND BEERS AND THEIR RELATIONSHIP TO HAZE FORMATIONJournal of the Institute of Brewing, 1983
- Synthesis of condensed tannins. Part 9. The condensation sequence of leucocyanidin with (+)-catechin and with the resultant procyanidinsJournal of the Chemical Society, Perkin Transactions 1, 1983
- Chromatographic separation and automated analysis of flavanolsAnalytical Biochemistry, 1978
- Analysis of condensed tannins using acidified vanillinJournal of the Science of Food and Agriculture, 1978
- Analytical Fractionation of the Phenolic Substances of Grapes and Wine and Some Practical Uses of Such AnalysesPublished by American Chemical Society (ACS) ,1974
- PHENOLIC COMPONENTS OF BREWING MATERIALS AND THEIR RELATION TO NON-BIOLOGICAL HAZESJournal of the Institute of Brewing, 1966
- Disorientation of Loggerhead Hatchlings by Artificial Road LightingIchthyology & Herpetology, 1963
- STUDIES ON NON-BIOLOGICAL HAZES OF BEERS VIII. RAPID ESTIMATION OF ANTHOCYANOGENS IN BEERJournal of the Institute of Brewing, 1959