Title: Fractionation of hemicellulosic materials
Application Number: 98808692 Application Date: 1998.08.27
Publication Number: 1268955 Publication Date: 2000.10.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C07G1/00;C07G17/00;C07K1/00;C08B30/04;C08B37/06;C08B37/14;C08H1/00;C08L5/14;D21C1/00;D21C5/00;D21C5/
Applicant(s) Name: E. I. Du Pont de Nemours and Co. Address:
Inventor(s) Name: C. S. Fitchett
Attorney & Agent: wang jingchao
Abstract:
    Disclosed is a process that uses selective enzymes from microbial or plant sources to facilitate the extraction of hemicellulose. Selective removal of acetate using acetyl xylan esterase (E.C.3.1.1.6) under conditions that will not hydrolyse the feruoylate esters. This treatment renders the arabinoxylan ferulate soluble under mild aqueous conditions without the use of harsh alkalis. Arabinoxylan ferulate is extracted intact and subsequently the level of ferulic acid can be controlled to give the degree of crosslinking required by treatment of the soluble arabinoxylan ferulate with ferulic acid esterase.
Time: 4