On the effect of a xylanase post-treatment as a means of reducing the yellowing of bleached hardwood kraft pulp
2007 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, Vol. 22, no 2, 172-176 p.Article in journal (Refereed) Published
The effect of an enzymatic post-treatment of bleached hardwood kraft pulp in order to improve the brightness stability was studied using two commercially available endoxylanases. The results clearly show that the yellowing was significantly reduced for two pulps of different origins bleached in different ways. The beneficial effect on the brightness stability was linked to a removal of hexenuronic acid (HexA) from the pulps. The practical applicability of the results needs to be considered in relation to the cost of the enzyme and to indications that there is some yield loss due to the treatment.
Place, publisher, year, edition, pages
2007. Vol. 22, no 2, 172-176 p.
xylanase, hardwood kraft pulp, ageing, brightness stability, hexenuronic acid, bleaching
IdentifiersURN: urn:nbn:se:kth:diva-16794ISI: 000248057800004ScopusID: 2-s2.0-34547252498OAI: oai:DiVA.org:kth-16794DiVA: diva2:334837
QC 201005252010-08-052010-08-05Bibliographically approved