Structural elucidation of new ferulic acid-containing phenolic dimers and trimers isolated from maize bran

被引：91

作者：

Bunzel, M

Ralph, J

Funk, C

Steinhart, H

机构：

[1] Univ Hamburg, Inst Biochem & Food Chem, Dept Food Chem, D-20146 Hamburg, Germany

[2] USDA ARS, US Dairy Forage Res Ctr, Madison, WI 53706 USA

[3] Univ Wisconsin, Dept Forestry, Madison, WI 53706 USA

来源：

TETRAHEDRON LETTERS | 2005年 / 46卷 / 35期

关键词：

Zea mays L; gramineae; cell wall cross-linking; triferulic acid; triferulate; ferulic acid; ferulate; phenolic dimers; vanillin; oxidative degradation; arabinoxylans; dietary fiber;

D O I：

10.1016/j.tetlet.2005.06.140

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Four new phenolic dimers and trimers that contain ferulic acid moieties were isolated from the alkaline hydrolyzate of insoluble maize bran fiber and their structures were established by 1D/2D NMR and mass spectrometry. The biological role of one dimer remains unclear whereas the dimeric vanillin-ferulic acid-cross-product probably represents an oxidative degradation product from the corresponding diferulate. Both ferulic acid dehydrotrimers are able to cross-link polysaccharide chains. However, the 5-5/8-O-4(H2O)-triferulic acid may be a cross-link in its identified structure whereas we assume that the identified 8-O-4/8-5(non-cyclic)-triferulic acid arose from a natural 8-0-4/8-5(cyclic)-triferulate analog during the saponification process. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：5845 / 5850

页数：6

共 27 条

[1] Isolation and structural identification of diarabinosyl 8-O-4-dehydrodiferulate from maize bran insoluble fibre [J].