Characterization of a cellulase-free xylanase producing Bacillus sp for biobleaching of kraft pulp

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dc.contributor.authorTavares, V. B.
dc.contributor.authorGomes, E.
dc.contributor.authorDa Silva, R.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:02:57Z
dc.date.available2014-05-20T14:02:57Z
dc.date.issued1997-07-01
dc.description.abstractApplication of the xylanase in the pulp bleaching process has been shown to be effective in decreasing the amount of chlorinating agents in the process and improving the brightness of the pulp. The use of thermostable cellulase-free xylanase might enhance both the technical and economic feasibility of the process. In this work an alkalophylic strain of Bacillus sp 77-2, was isolated which showed a high production of xylanase and free cellulases. The xylanase of Bacillus sp displayed an optimum pH of 6.0 (with 70% activity at pH 9.0), all optimum temperature of 60 degrees C, pH stability in the range 5-10 and thermal stability of 50 degrees C. These characteristics are important to the kraft pulp bleaching because they are similar to those found in the industrial paper environment.en
dc.description.affiliationUNESP, IBILCE, Lab Bioquim Proc & Microbiol Aplicada, BR-15054000 Sao Jose Rio Preto, SP, Brazil
dc.description.affiliationUnespUNESP, IBILCE, Lab Bioquim Proc & Microbiol Aplicada, BR-15054000 Sao Jose Rio Preto, SP, Brazil
dc.format.extent179-182
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_issues&pid=0001-3714&lng=en&nrm=iso
dc.identifier.citationRevista de Microbiologia. São Paulo: Soc Brasileira Microbiologia, v. 28, n. 3, p. 179-182, 1997.
dc.identifier.issn0001-3714
dc.identifier.lattes7091241742851920
dc.identifier.lattes9424175688206545
dc.identifier.urihttp://hdl.handle.net/11449/22181
dc.identifier.wosWOS:000071388700007
dc.language.isoeng
dc.publisherSoc Brasileira Microbiologia
dc.relation.ispartofRevista de Microbiologia
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectxylanasept
dc.subjectKraft pulppt
dc.subjectbiobleachingpt
dc.titleCharacterization of a cellulase-free xylanase producing Bacillus sp for biobleaching of kraft pulpen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rm/paboutj.htm
dcterms.rightsHolderSoc Brasileira Microbiologia
unesp.author.lattes7091241742851920
unesp.author.lattes9424175688206545
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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Artigos - Química e Ciências Ambientais - IBILCE