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United States Department of Agriculture

Agricultural Research Service

Title: Afex Pretreatment, Enzymatic Hydrolysis and Fermentation of Corn Fiber by Genetically-Modified and Native Organisms

item Monirussaman, Mohammed - TEXAS A&M UNIV
item Bothast, Rodney
item Dale, Bruce - TEXAS A&M UNIV

Submitted to: Pacific Basin Society Chemical International Congress Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: December 22, 1995
Publication Date: N/A

Technical Abstract: Corn fiber is a crop processing residue containing significant amounts of cellulose, hemicellulose and starch which is already gathered in facilities where fuel ethanol is currently manufactured. The conversion of corn fiber to ethanol via pretreatment by the ammonia fiber explosion (AFEX) process, enzymatic hydrolysis and fermentation by genetically-engineered microorganisms is discussed. The best AFEX operating conditions for pretreatment of corn fiber are defined in terms of the moisture content, ammonia:biomass ratio, temperature, and residence time using the response of the pretreated biomass to enzymatic hydrolysis as an indicator. AFEX-treated corn fiber is hydrolyzed rapidly and completely by cellulase preparations.

Last Modified: 4/18/2015
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