STUDIES ON BEER HAZE FORMATION. 1. GAS CHROMATOGRAPHIC PROFILES OF BEER: POLYAMIDE RESIN ADSORBATES*
Open Access
- 4 March 1976
- journal article
- research article
- Published by Chartered Institute of Brewers and Distillers in Journal of the Institute of Brewing
- Vol. 82 (2) , 72-77
- https://doi.org/10.1002/j.2050-0416.1976.tb03729.x
Abstract
A methanol-soluble fraction of beer-Nylon 66 adsorbates has been examined by gas chromatography using enhanced volatilities afforded by trimethylsilylation. Mass spectrometry was used to assign structures to several profile components which included fatty acids, residual wort carbohydrates and phenols. The latter comprised free acids, the most prominent being p-hydroxy-cinnamic and ferulic acids, catechins, a catechin glycoside, dicatechin and condensed biflavans. Flavonoids were not observed. The profiles can be used to gain information, which has hitherto been unavailable from paper and thin layer chromatographic studies, on the relative concentrations of adsorbate components. PVP-adsorbate profiles contained the same phenols as were observed in the Nylon profiles.Keywords
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