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Detoxification of steam-exploded corn straw produced by an industrial-scale reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
35762 45105 2008 5 PDF Available
Title
Detoxification of steam-exploded corn straw produced by an industrial-scale reactor
Abstract

Steam explosion (SE) is widely used in lignocellulose pretreatment. However, steam-exploded corn straw (SECS) cannot be directly used as a solid-state fermentation substrate for Trichoderma reesei owing to the inhibitors released during pretreatment. We investigated the effect of SE conditions on inhibitor production in a 5 m3 SE reactor and the fermentation enhancement achieved by drying and water-washing of SECS. The results reveal that SE enhanced the fermentability of corn straw and simultaneously produced fermentation inhibitors. Water-washing (corn straw/water 1:5, 60 °C, 2 × 30 min) removed 81% of the furfural and 85% of the phenol compounds from SECS pretreated at 1.6 MPa, which were higher than the 46 and 8.1%, respectively, removed by drying at 105 °C for 2 h. T. reesei YG3 cultures produced high cellulase activity of 41.4 and 81.4 IU/g dry medium on dried and water-washed SECS, respectively, which is higher than the 2.2 IU/g dry medium obtained from corn straw.

Keywords
Cellulase; Trichoderma reesei YG3; Solid-state fermentation; Steam explosion; Corn straw; Detoxification
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Detoxification of steam-exploded corn straw produced by an industrial-scale reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 43, Issue 12, December 2008, Pages 1447–1451
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