Hemicellulase-assisted bleaching of modified kraft pulp produced with polysulphide addition

Robert Allison, Ken Wong, Anna Suurnäkki, Johanna Buchert

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

The increased retention of hemicelluloses, particularly glucomannan, during poly sulphide pulping may affect the pulp's response to hemicellulase-assisted bleaching, possibly in the same way as postulated for redeposited xylans. MCC (modified continuous cooking) pulp prepared in the laboratory with and without poly sulphide (PS) addition was examined for hemicellulase-assisted bleaching with purified xylanase and mannanase from Trichoderma reesei.
Glucomannan solubilization during mannanase treatment was not increased for MCC/PS pulp over reference MCC pulp, suggesting that the yield gain for MCC/PS pulp was maintained. Improvements to chlorine dioxide (DED) and hydrogen peroxide (QPPP) bleaching after hemicellulase treatments were also unaffected by polysulphide addition to modified kraft pulping.
Original languageEnglish
Pages (from-to)178-183
JournalJournal of Pulp and Paper Science
Volume24
Issue number6
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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