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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1766
Title: Biobleaching of nonwoody pulps using xylanase of Bacillus brevis BISR-062
Authors: Choudhury B.
Aggarwal P.
Gothwal R.K.
Mantri R.
Mohan M.K.
Ghosh P.
Published in: Applied Biochemistry and Biotechnology
Abstract: The efficiency of xylanase of Bacillus brevis BISR-062 as a prebleaching agent was evaluated on three nonwoody pulps at two different pH values (7.0 and 8.5). Crude xylanase was found to have an optimum temperature and pH of 65-70°C and 7.0, respectively. The stability of the enzyme was determined at two pH values (7.0 and 8.0), and it lost approx 50% of its activity at both values within 2 h at 50°C. However, the enzyme was found to be effective as a prebleaching agent only with rice straw pulp. A maximum brightness gain of 6 points was obtained with this pulp at pH 7.0. The strength properties of the rice straw pulp at pH 7.0 also improved as the result of enzyme treatment. Copyright © 2006 by Humana Press Inc. All rights of any nature whatsoever reserved.
Citation: Applied Biochemistry and Biotechnology (2006), 128(2): 159-169
URI: https://doi.org/10.1385/ABAB:128:2:159
http://repository.iitr.ac.in/handle/123456789/1766
Issue Date: 2006
Keywords: Bacillus brevis
Biobleaching
Nonwoody pulps
Xylanase
ISSN: 2732289
Author Scopus IDs: 7103333522
12242759800
12242620500
6701415720
12242902600
57212696908
Author Affiliations: Choudhury, B., Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India
Aggarwal, P., Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India
Gothwal, R.K., Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India
Mantri, R., Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India
Mohan, M.K., Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India
Ghosh, P., Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India
Funding Details: We express our sincere thanks to Kumarappa National Hand Made Paper Institute, Sanganer, Jaipur, for its help during the testing of the optical and strength properties of the pulp. This work was financially supported by the Indian Paper Manufacturers Association, New Delhi; and the Department of Biotechnology, Government of India.
Corresponding Author: Ghosh, P.; Birla Institute of Scientific Research, Statue Circle, Jaipur, 302001, India; email: pghosh9@yahoo.com
Appears in Collections:Journal Publications [BT]

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