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Bleach-boosting effect of crude xylanase from Bacillus stearothermophilus SDX on wheat straw pulp

Paper ID Volume ID Publish Year Pages File Format Full-Text
33890 44996 2011 7 PDF Available
Title
Bleach-boosting effect of crude xylanase from Bacillus stearothermophilus SDX on wheat straw pulp
Abstract

Pretreatment of wheat straw pulp using cellulase-free xylanase produced from Bacillus stearothermophilus SDX at 60 °C for 120 min resulted in 4.75% and 22.31% increase in brightness and whiteness, respectively. Enzyme dose of 10 U/g of oven dried pulp at pH 9 decreased the kappa number and permanganate number by 7.14% and 5.31%, respectively. Further chlorine dioxide and alkaline bleaching sequences (CDED1D2) resulted in 1.76% and 3.63% increase in brightness and whiteness, respectively. Enzymatic prebleaching of pulp decreased 20% of chlorine consumption without any decrease in brightness. Improvement in various pulp properties like viscosity, burst factor, burstness, breaking length, double fold, gurley porosity, tear factor, and tearness were also observed after bleaching of xylanase treated wheat straw pulp.

First Page Preview
Bleach-boosting effect of crude xylanase from Bacillus stearothermophilus SDX on wheat straw pulp
Publisher
Database: Elsevier - ScienceDirect
Journal: New Biotechnology - Volume 28, Issue 1, 31 January 2011, Pages 58–64
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering