fulltext.study @t Gmail

Xylanase recycling for the economical biobleaching of sugarcane bagasse and straw pulps

Paper ID Volume ID Publish Year Pages File Format Full-Text
17738 42692 2008 7 PDF Available
Title
Xylanase recycling for the economical biobleaching of sugarcane bagasse and straw pulps
Abstract

In this work, the applicability of xylanases in sugarcane straw pulps and the possibility of recovering this enzyme were evaluated. A commercial xylanase (Pulpzyme HC) was used for pulp treatment and this enzyme was recovered and reused several times in the new pulp enzymatic treatment without addition of new enzyme load. In addition, a combined process of pulping was also evaluated, such as the fungal pretreatment of straw (biopulping) and the acetosolv pulping. Quantity of recovered enzyme in the first treatment was approximately 7% of initial enzyme load. After the second treatment no enzyme recovery was possible. Several factors interfered on xylanase recovery, such as pulp type, treatment medium (buffered or aqueous) and the methodology employed in the enzyme recovery. An alkaline extraction stage was carried out to verify the action of Pulpzyme on enzymatic treated pulps, but due to concentration of NaOH used in the stage differences were not observed in the kappa numbers and viscosity of the pulps. The Fourier transform infrared and principal component analyses (FTIR–PCA) were used to analyze sugarcane bagasse pulps of a previous work and FTIR–PCA showed differences among untreated, xylanase-treated and alkaline-extracted pulps of sugarcane bagasse.

Keywords
BSP, biotreated straw pulp; RSP, raw straw pulp; 1st ET, first enzymatic treatment; 2nd ET, second enzymatic treatment; 3rd ET, third enzymatic treatment; PCA, principal component analysis; FTIR, Fourier transform infraredXylanase; Sugarcane bagasse and s
First Page Preview
Xylanase recycling for the economical biobleaching of sugarcane bagasse and straw pulps
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 43, Issue 2, 5 August 2008, Pages 157–163
Authors
, , , ,
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