ASSESSMENT OF VARIOUS COMMERCIAL ENZYMES IN THE BLEACHING OF RADIATA PINE KRAFT PULPS

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dc.contributor.authorVICUNA, R
dc.contributor.authorOYARZUN, E
dc.contributor.authorOSSES, M
dc.date.accessioned2025-01-21T01:34:42Z
dc.date.available2025-01-21T01:34:42Z
dc.date.issued1995
dc.description.abstractFour xylanase preparations that are commercially available, namely Cartazyme from Sandoz, Ecopulp from Alko-ICI, Irgazyme from Ciba-Genencor and Pulpzyme HB from Novo Nordisk, were tested in bleaching experiments of kraft pulps from Pinus radiata. The main objective of this study was to optimize a reduction in the consumption of chlorine dioxide in the bleaching sequences C-90/D(10)E(o)DED, C-70/D(30)E(o)DED and D(100)EDED. Enzymatic treatments led to savings of ClO2 between 3.5 and 3.9 kg per air-dried tons (ADT) in the three bleaching sequences, without affecting the target brightness of the pulps. In these assays, some minor although reproducible differences in the performance of the enzymes were observed. In most cases, xylanase treatment partially affected the beatability of the pulps, measured as the number of revolutions in the PFI mill required to reach the same tensile index as the respective controls.
dc.fuente.origenWOS
dc.identifier.issn0168-1656
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97591
dc.identifier.wosidWOS:A1995RH45100003
dc.issue.numero3
dc.language.isoen
dc.pagina.final168
dc.pagina.inicio163
dc.revistaJournal of biotechnology
dc.rightsacceso restringido
dc.subjectBIOBLEACHING
dc.subjectXYLANASE
dc.subjectKRAFT PULP
dc.subjectRADIATA PINE
dc.subjectCHLORINE DIOXIDE
dc.subject.ods12 Responsible Consumption and Production
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa12 Producción y consumo responsable
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleASSESSMENT OF VARIOUS COMMERCIAL ENZYMES IN THE BLEACHING OF RADIATA PINE KRAFT PULPS
dc.typeartículo
dc.volumen40
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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