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Enhanced enzymatic hydrolysis of olive tree wood by steam explosion and alkaline peroxide delignification

Paper ID Volume ID Publish Year Pages File Format Full-Text
36178 45123 2006 7 PDF Available
Title
Enhanced enzymatic hydrolysis of olive tree wood by steam explosion and alkaline peroxide delignification
Abstract

Olive tree wood, a renewable low-cost agricultural residue, was submitted to steam explosion pretreatment at 190, 210, 230 and 240 °C for 5 min. To improve enzymatic hydrolysis yields, the water-insoluble fiber was further delignified by an alkaline peroxide treatment. Enzymatic hydrolysis was performed using a commercial cellulolytic complex supplemented with β-glucosidase at 10% (w/v) pretreated material concentration. Delignification did enhance enzymatic hydrolysis yields of steam pretreated olive tree wood. Up to 80% of the lignin in the original wood was solubilized, leaving a cellulose-rich residue that led to a concentrated glucose solution (51.3 g/l after 72 h enzymatic hydrolysis in the best case). The maximum overall process yield, taking into account both sugars present in the liquid from steam pretreatment and glucose from the steamed, delignified and hydrolyzed solid was obtained at the lowest steam pretreatment temperature assayed. As a result, from 100 g of raw material, 28.8 g of sugars were recovered of 54.7 g available (52.6%).

Keywords
Agricultural residues; Olive tree wood; Pretreatment; Steam explosion; Enzymatic hydrolysis; Delignification
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Enhanced enzymatic hydrolysis of olive tree wood by steam explosion and alkaline peroxide delignification
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 2, February 2006, Pages 423–429
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us