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Improvement of arabinoxylan isolation from barley husks

Paper ID Volume ID Publish Year Pages File Format Full-Text
19482 43069 2009 6 PDF Available
Title
Improvement of arabinoxylan isolation from barley husks
Abstract

A method of extracting arabinoxylan from barley husks has previously been developed, but was found to suffer from three problems, namely: starch was dispersed in the aqueous phase during steam pretreatment, the yield of extracted arabinoxylan with high molecular mass was low in the steam pretreatment step, and there was high filtration resistance in the clarification step. This paper presents possible solutions to these problems. Starch was removed prior to steam pretreatment by boiling the husks in water for 1 h. This treatment decreased the content of glucan in the aqueous phase after steam pretreatment by 75%. The yield of arabinoxylan with a molecular mass greater than 5 kDa was increased from 5% to 25% by using alkaline impregnation (1 wt.% NaOH). A vibrating shear-enhanced microfiltration unit was proven to be an alternative method to traditional filtration for clarification of the aqueous phase.

Keywords
Hemicelluloses; Steam pretreatment; Microfiltration; Starch
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Improvement of arabinoxylan isolation from barley husks
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 87, Issue 3, September 2009, Pages 228–233
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