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Search for optimum conditions of sugarcane bagasse hemicellulose extraction

Paper ID Volume ID Publish Year Pages File Format Full-Text
4178 212 2009 6 PDF Available
Title
Search for optimum conditions of sugarcane bagasse hemicellulose extraction
Abstract

A process has been elaborated for one-step low lignin content sugarcane bagasse hemicellulose extraction using alkaline solution of hydrogen peroxide. To maximize the hemicellulose yields several extraction conditions were examined applying the 24 factorial design: H2O2 concentration from 2 to 6% (w/v), reaction time from 4 to 16 h, temperature from 20 to 60 °C, and magnesium sulfate absence or presence (0.5%, w/v). This approach allowed selection of conditions for the extraction of low and high lignin content hemicellulose. At midpoint the yield of hemicellulose was 94.5% with more than 88% of lignin removed. Lignin removal is suppressed at low extraction temperatures and in the absence of magnesium sulfate. Hemicellulose in 86% yield with low lignin content (5.9%) was obtained with 6% H2O2 treatment for 4 h and 20 °C. This hemicellulose is much lighter in color than samples obtained at the midpoint condition and was found suitable for subsequent enzymatic hydrolysis.

Keywords
Hemicellulose; Biomass; Lignocellulose; Sugarcane bagasse; Extraction; Biopolymers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 46, Issue 2, 1 October 2009, Pages 199–204
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