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Wet oxidation as a pretreatment method for enhancing the enzymatic convertibility of sugarcane bagasse

Paper ID Volume ID Publish Year Pages File Format Full-Text
18372 42720 2007 7 PDF Available
Title
Wet oxidation as a pretreatment method for enhancing the enzymatic convertibility of sugarcane bagasse
Abstract

The effect of six different conditions of wet oxidation (WO) pretreatment on fractionation and enzymatic convertibility of sugarcane bagasse was investigated. WO resulted in an increase of cellulose content of bagasse as a result of the solubilisation of hemicelluloses and lignin. The highest cellulose content, nearly 70%, was obtained in the pretreatment at 195 °C, 15 min and alkaline pH. Pretreatments at 195 °C and 15 min solubilised 93–94% of hemicelluloses and 40–50% of lignin, while pretreatment at 185 °C, 5 min and alkaline pH solubilised only 30% of hemicelluloses and 20% of lignin. The highest sugar yield in the liquid fraction, 16.1 g/100 g, was obtained at 185 °C, 5 min and acidic pH. The highest formation of carboxylic acids, phenols and furaldehydes occurred at 195 °C, 15 min and acidic pH. Alkaline pH reduced the formation of furaldehydes, which was irrelevant for most WO conditions. All pretreatment conditions improved the enzymatic convertibility of cellulose. The highest convertibility, 74.9% was achieved in the hydrolysis of the material obtained by pretreatment at 195 °C, 15 min and alkaline pH. Some xylan convertibility was also observed.

Keywords
Wet oxidation; Enzymatic hydrolysis; Bagasse; Ethanol
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Wet oxidation as a pretreatment method for enhancing the enzymatic convertibility of sugarcane bagasse
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 40, Issue 3, 5 February 2007, Pages 426–432
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