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ARS Home » Midwest Area » Madison, Wisconsin » U.S. Dairy Forage Research Center » Research » Publications at this Location » Publication #76334
Title: STRUCTURE OF CELL WALL POLYSACCHARIDES IN MAIZE BRAN

Author
item SAULNIER, LUC - INRA, FRANCE
item CHANLIAUD, E - INRA, FRANCE
item CREPEAU, M - INRA, FRANCE
item THIBAULT, J - INRA, FRANCE
item Ralph, John

Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: 7/19/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Saponification of maize bran released p-hydroxybenzoic acid, p-coumaric acid, and ferulic acid, along with a series of dimers. The two most prominant dimers were the 5-5- and the 8-O-4-coupled dehydrodiferulates, but the 8-8- and 8-5-coupled dimers were also detected. Treatment of maize bran with alkali (2 M, 2 h, 30 deg. C) cleaved all ferulate esters but released only 35% of the heteroxylans; more severe conditions (1.5 M, 2 h, 100 deg. C) were required to release 90% of the heteroxylans. Therefore the insolubility of the heteroxylan cannot be ascribed only to diferulate bridging. Variations in MW and protein content suggested that maize bran polysaccharides are linked to cell wall proteins.