Thermo-mechanical extrusion pretreatment for conversion of soybean hulls to fermentable sugars


Show simple item record Yoo, Juhyun Alavi, Sajid Vadlani, Praveen V. Amanor-Boadu, Vincent 2012-02-08T15:38:26Z 2012-02-08T15:38:26Z 2012-02-08
dc.description.abstract Thermo-mechanical extrusion pretreatment for lignocellulosic biomass was investigated using soybean hulls as the substrate. The enzyme cocktail used to hydrolyze pretreated soybean hulls to fermentable sugars was optimized using response surface methodology (RSM). Structural changes in substrate and sugar yields from thermo-mechanical processing were compared with two traditional pretreatment methods that utilized dilute acid (1% sulfuric acid) and alkali (1% sodium hydroxide). Extrusion processing parameters (barrel temperature, in-barrel moisture, screw speed) and processing aids (starch, ethylene glycol) were studied with respect to reducing sugar and glucose yields. The conditions resulting in the highest cellulose to glucose conversion (95%) were screw speed 350 rpm, maximum barrel temperature 80 C and in-barrel moisture content 40% wb. Compared with untreated soybean hulls, glucose yield from enzymatic hydrolysis of soybean hulls increased by 69.6%, 128.7% and 132.2%, respectively, when pretreated with dilute acid, alkali and extrusion. en_US
dc.relation.uri en_US
dc.subject Soybean hulls en_US
dc.subject Lignocellulosic en_US
dc.subject Ethanol en_US
dc.subject Pretreatment en_US
dc.subject Extrusion en_US
dc.title Thermo-mechanical extrusion pretreatment for conversion of soybean hulls to fermentable sugars en_US
dc.type Article (author version) en_US 2011 en_US
dc.citation.doi doi:10.1016/j.biortech.2011.04.092 en_US
dc.citation.epage 7590 en_US
dc.citation.issue 16 en_US
dc.citation.jtitle Bioresource Technology en_US
dc.citation.spage 7583 en_US
dc.citation.volume 102 en_US
dc.contributor.authoreid salavi en_US
dc.contributor.authoreid vadlani en_US
dc.contributor.authoreid vincent en_US

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