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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13128
Title: Bio-conventional bleaching of wheat straw soda-AQ pulp with crude xylanases from SH-1 NTCC-1163 and SH-2 NTCC-1164 strains of Coprinellus disseminatus to mitigate AOX generation
Authors: Singh S.
Dutt, Dharm
Tyagi C.H.
Upadhyaya J.S.
Published in: New Biotechnology
Abstract: Two novel cellulase-poor xylanases from Coprinellus disseminatus SH-1 NTCC-1163 (enzyme-A) and SH-2 NTCC-1164 (enzyme-B) produced under solid-state fermentation mitigated kappa number of wheat straw soda-AQ pulps by 24.38 and 27.94% respectively after XE stages. The release of reducing sugars and chromophores was highest for both the enzymes at 10IU/g and reaction time 180min for 55°C at variable consistencies that is, 10% for enzyme-A and 5% for enzyme-B. AXECEHH and BXECEHH sequences improved brightness by 5.17 and 2.58% respectively at 4.5% chlorine charge. AOX in AXECEHH and BXECEHH sequences reduced by 56.11 and 55.75% respectively at 4.5% chlorine charge and 68.34 and 67.98% respectively at 2.25% chlorine charge respectively compared to control. Both the enzymes showed improvement in double fold and tear index with a decrease in burst and tensile index. SEM showed peeling, cracking and delamination in fibers due to enzyme treatment thus facilitating the penetration of bleach chemicals. © 2010 Elsevier B.V.
Citation: New Biotechnology (2011), 28(1): 47-57
URI: https://doi.org/10.1016/j.nbt.2010.06.005
http://repository.iitr.ac.in/handle/123456789/13128
Issue Date: 2011
ISSN: 18716784
Author Scopus IDs: 7406402372
7005982560
6602705260
8679068400
Author Affiliations: Singh, S., Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
Tyagi, C.H., Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
Upadhyaya, J.S., Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
Corresponding Author: Singh, S.; Department of Paper Technology, Indian Institute of Technology, Roorkee, India; email: shalinisingh.iit@gmail.com
Appears in Collections:Journal Publications [PT]

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