ADSORPTION BY POLYVINYLPOLYPYRROLIDONE OF CATECHINS AND PROANTHOCYANIDINS FROM BEER

被引：58

作者：

MCMURROUGH, I ^{[1
]}

MADIGAN, D ^{[1
]}

SMYTH, MR ^{[1
]}

机构：

[1] DUBLIN CITY UNIV,SCH CHEM SCI,DUBLIN 9,IRELAND

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1995年 / 43卷 / 10期

关键词：

ADSORPTION; BEER; FLAVANOLS; HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY; HYDROXYBENZOIC ACIDS; POLYVINYLPOLYPYRROLIDONE (PVPP);

D O I：

10.1021/jf00058a025

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The amounts of different phenolics adsorbed from beer and model solutions by various dosages of two commercial grades of polyvinylpolypyrrolidone (PVPP) were measured accurately by highperformance liquid chromatography, using electrochemical detection. Adsorption of simple phenolic acids and flavanols (catechins and proanthocyanidins) displayed classical Freundlich characteristics, and the isotherms obtained were compared to determine the extent of selectivity. Although PVPP preferentially adsorbed the more highly hydroxylated phenolic acids in model mixtures, a similar trend was not observed for the adsorption of dimeric flavanols in beer. The adsorptive capacity of commercial PVPP increased with decreasing particle size.

引用

页码：2687 / 2691

页数：5

共 29 条

[1] USE OF POLY-N-VINYLPYRROLIDONE AS ADSORBENT FOR CHROMATOGRAPHIC-SEPARATION OF CHLOROGENIC ACIDS AND OTHER PHENOLIC COMPOUNDS [J].