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Biobleaching of nonwoody pulps using xylanase of Bacillus brevis BISR-062.
- Source :
-
Applied biochemistry and biotechnology [Appl Biochem Biotechnol] 2006 Feb; Vol. 128 (2), pp. 159-70. - Publication Year :
- 2006
-
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 degrees 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 degrees 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.
Details
- Language :
- English
- ISSN :
- 0273-2289
- Volume :
- 128
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Applied biochemistry and biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 16484725
- Full Text :
- https://doi.org/10.1385/abab:128:2:159