Polymeric fractions containing phenol glucosides in flaxseed

被引：74

作者：

Johnsson, P

Peerlkamp, N

Kamal-Eldin, A ^{[1
]}

Andersson, RE

Andersson, R

Lundgren, LN

Åman, P

机构：

[1] Swedish Univ Agr Sci, SLU, Dept Food Sci, SE-75007 Uppsala, Sweden

[2] Swedish Univ Agr Sci, SLU, Dept Chem, SE-75007 Uppsala, Sweden

来源：

FOOD CHEMISTRY | 2002年 / 76卷 / 02期

关键词：

flaxseed; phenol glucoside polymers; secoisolariciresinol diglucoside; p-coumaric acid glucoside; ferulic acid glucoside;

D O I：

10.1016/S0308-8146(01)00269-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Extract rich in phenolic compounds was obtained from flaxseed with 1,4-dioxane:ethanol (1 : 1, v/v). This extract (whole polymer) was fractionated by solid-phase extraction into three "polymeric" fractions of comparable polarity. HPLC analyses of the base hydrolysates of the three polymeric fractions showed that they contain the same UV-absorbing components, though at different levels and all contained substantial amounts of a lignan, secoisolariciresinoldiglucoside (SDG). Fractionation of the base hydrolysates by column chromatography, followed by high performance liquid chromatography (HPLC) yielded two pure hydroxyeinnamic acid derivatives: 4-O-beta-D-glueopyranosyl-p-coumarie acid and 4-O-beta-D-glucopyranosylferulic acid, whose structures were identified by nuclear magnetic resonance spectroscopy (NMR). NMR analysis showed all three polymeric fractions to have phenolic and aliphatic components and. in line with HPLC, suggested some structural variations between these fractions. The results of this study suggest that the glucosylated phenolic compounds of flaxseed exist in polymeric structure(s) containing ester linkages. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：207 / 212

页数：6

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