Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 473 - 478 |
| Number of pages | 6 |
| Journal | Holzforschung |
| Volume | 47 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1993 |
| MoE publication type | A1 Journal article-refereed |
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The role of Trichoderma reesei xylanase and mannanase in the treatment of softwood kraft pulp prior to bleaching. / Buchert, Johanna; Salminen, J.; Siika-aho, Matti; Ranua, Marjatta; Viikari, Liisa.
In: Holzforschung, Vol. 47, No. 6, 1993, p. 473 - 478.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - The role of Trichoderma reesei xylanase and mannanase in the treatment of softwood kraft pulp prior to bleaching
AU - Buchert, Johanna
AU - Salminen, J.
AU - Siika-aho, Matti
AU - Ranua, Marjatta
AU - Viikari, Liisa
N1 - Project code: BIO2022
PY - 1993
Y1 - 1993
N2 - Xylanase treatment improved the bleachability of softwood kraft pulp both in conventional chlorine bleaching and in peroxide delignification. The mannanase isolated from Trichoderma reesei acted differently and improved the bleachability in the peroxide delignification significantly more than in the chlorine bleaching. When mannanase and xylanase were dosed together a positive effect was detected in both bleaching sequences. The reason for the different efficiencies of these enzymatic treatments in the bleaching may be the selectivities of the bleaching chemicals. The mannanase could hydrolyze amounts of glucomannan comparable to the xylan hydrolyzed by xylanase, suggesting that at least part of both hemicelluloses are located on the surface of the fibres.
AB - Xylanase treatment improved the bleachability of softwood kraft pulp both in conventional chlorine bleaching and in peroxide delignification. The mannanase isolated from Trichoderma reesei acted differently and improved the bleachability in the peroxide delignification significantly more than in the chlorine bleaching. When mannanase and xylanase were dosed together a positive effect was detected in both bleaching sequences. The reason for the different efficiencies of these enzymatic treatments in the bleaching may be the selectivities of the bleaching chemicals. The mannanase could hydrolyze amounts of glucomannan comparable to the xylan hydrolyzed by xylanase, suggesting that at least part of both hemicelluloses are located on the surface of the fibres.
U2 - 10.1515/hfsg.1993.47.6.473
DO - 10.1515/hfsg.1993.47.6.473
M3 - Article
VL - 47
SP - 473
EP - 478
JO - Holzforschung
JF - Holzforschung
SN - 0018-3830
IS - 6
ER -