Determination of some structural features of procyanidins and related compounds by photodiode-array detection

被引：68

作者：

Bartolome, B ^{[1
]}

Hernandez, T ^{[1
]}

Bengoechea, ML ^{[1
]}

Quesada, C ^{[1
]}

GomezCordoves, C ^{[1
]}

Estrella, I ^{[1
]}

机构：

[1] CSIC, INST FERMENTAC IND, E-28006 MADRID, SPAIN

来源：

JOURNAL OF CHROMATOGRAPHY A | 1996年 / 723卷 / 01期

关键词：

photodiode-array detector; procyanidins;

D O I：

10.1016/0021-9673(95)00839-X

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

In this work we have examined the use of a photodiode-array detector to identify unknown peaks corresponding to procyanidins and related compounds. The type of flavan-3-ol unit can be recognised from the absorption maximum (278.9 nm for catechin and epicatechin, and 270.6 nm for epigallocatechin), whereas the number of flavan-3-ol units does not affect this parameter, The min-max distance (distance between the minimum and the maximum in the original spectrum) decreases by 1.3 nm for each catechin or epicatechin unit. Gallates of flavan-3-ol can be detected by reference to the value of the convexity interval (distance between the inflection points before and after the maximum in the original spectrum).

引用

页码：19 / 26

页数：8

共 29 条

[1] BITTERNESS AND ASTRINGENCY OF PHENOLIC FRACTIONS IN WINE [J].