Wheat bran tissue fractionation using biochemical markers

被引：137

作者：

Antoine, C ^{[1
]}

Peyron, S ^{[1
]}

Lullien-Pellerin, V ^{[1
]}

Abecassis, J ^{[1
]}

Rouau, X ^{[1
]}

机构：

[1] Ecole Natl Super Agron Montpellier, UM 2, CIRAD, INRA,UMR Agropolymer Engn & Emerging Technol, F-34060 Montpellier 1, France

来源：

JOURNAL OF CEREAL SCIENCE | 2004年 / 39卷 / 03期

关键词：

wheat bran; aleurone layer; pericarp; phenolic acids; phytates; fractionation behavior;

D O I：

10.1016/j.jcs.2004.02.001

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Phenolic acid analysis of hand-isolated outer grain layers and endosperm led to the identification of markers of pericarp and aleurone layers, respectively. A new dehydrotrimer of ferulic acid (DHT) was found to be concentrated in the outer pericarp of wheat bran whereas p-coumaric (p-CA) acid was mainly in the aleurone layer. Phytates were also used as a marker of aleurone layer and starch as a marker of starchy endosperm. Biochemical markers constitute an original method for determining the histological composition of any technological bran fractions. A pin milling process was applied to coarse bran produced by a conventional milling process. Three different fractions (B 1, B2 and B3) we re obtained by sieving the bran products and then the smallest bran particle fraction (B3) was air-classified to obtain two particle size fractions (B3a and B3b with a D50 of 83 and 7 mum, respectively). The biochemical composition of these fractions was used to calculate the distribution of tissues according to the sieving process. The dissociation behavior of individual bran tissues upon mechanical fractionation was investigated in relation to particle size and discussed according to their mechanical properties. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：387 / 393

页数：7

共 29 条

[1]

ABECASSIS J, 1991, IND CEREALES, V81, P25

[2] In vitro digestibility and colonic fermentability of aleurone isolated from wheat bran [J].