Effects of enzymatic removal of xylan and glucomannan on the pore size distribution of kraft fibres

Anna Suurnäkki, T.-Q. Li, Johanna Buchert, Maija Tenkanen, Liisa Viikari, Tapani Vuorinen, L. Ödberg

Research output: Contribution to journalArticleScientificpeer-review

45 Citations (Scopus)

Abstract

The effects of enzymatic removal of xylan and glucomannan from pine and birch kraft pulps on the pore size distribution and median pore width of the pulp fibres were determined by modified solute exclusion and NMR techniques. With the NMR method, clearly higher median pore sizes of the kraft fibres were obtained compared with the solute exclusion method. However, the effects of enzymatic treatments on pore size distributions and median pore widths of fibres were detected by both techniques. An increase in the pore width of both pine and birch kraft fibres was observed even after a limited xylanase treatment. The NMR technique appeared to be more suitable than the solute exclusion method for determination of the further increase of the median pore width and the widening of the pore size distribution of fibres by a more extensive xylanase treatment. Both techniques revealed an increase of the median pore width of fibres caused by the extensive removal of pine kraft pulp glucomannan. Despite their basic differences and specific limitations, both the NMR and solute exclusion techniques showed the enzymatic effects on the porosity of pulp fibres.
Original languageEnglish
Pages (from-to)27 - 33
Number of pages7
JournalHolzforschung
Volume51
Issue number1
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

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Xylans
Pore size
Fibers
Nuclear magnetic resonance
Kraft pulp
Pulp
(1-6)-alpha-glucomannan
Porosity

Cite this

Suurnäkki, A., Li, T-Q., Buchert, J., Tenkanen, M., Viikari, L., Vuorinen, T., & Ödberg, L. (1997). Effects of enzymatic removal of xylan and glucomannan on the pore size distribution of kraft fibres. Holzforschung, 51(1), 27 - 33. https://doi.org/10.1515/hfsg.1997.51.1.27
Suurnäkki, Anna ; Li, T.-Q. ; Buchert, Johanna ; Tenkanen, Maija ; Viikari, Liisa ; Vuorinen, Tapani ; Ödberg, L. / Effects of enzymatic removal of xylan and glucomannan on the pore size distribution of kraft fibres. In: Holzforschung. 1997 ; Vol. 51, No. 1. pp. 27 - 33.
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abstract = "The effects of enzymatic removal of xylan and glucomannan from pine and birch kraft pulps on the pore size distribution and median pore width of the pulp fibres were determined by modified solute exclusion and NMR techniques. With the NMR method, clearly higher median pore sizes of the kraft fibres were obtained compared with the solute exclusion method. However, the effects of enzymatic treatments on pore size distributions and median pore widths of fibres were detected by both techniques. An increase in the pore width of both pine and birch kraft fibres was observed even after a limited xylanase treatment. The NMR technique appeared to be more suitable than the solute exclusion method for determination of the further increase of the median pore width and the widening of the pore size distribution of fibres by a more extensive xylanase treatment. Both techniques revealed an increase of the median pore width of fibres caused by the extensive removal of pine kraft pulp glucomannan. Despite their basic differences and specific limitations, both the NMR and solute exclusion techniques showed the enzymatic effects on the porosity of pulp fibres.",
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Suurnäkki, A, Li, T-Q, Buchert, J, Tenkanen, M, Viikari, L, Vuorinen, T & Ödberg, L 1997, 'Effects of enzymatic removal of xylan and glucomannan on the pore size distribution of kraft fibres', Holzforschung, vol. 51, no. 1, pp. 27 - 33. https://doi.org/10.1515/hfsg.1997.51.1.27

Effects of enzymatic removal of xylan and glucomannan on the pore size distribution of kraft fibres. / Suurnäkki, Anna; Li, T.-Q.; Buchert, Johanna; Tenkanen, Maija; Viikari, Liisa; Vuorinen, Tapani; Ödberg, L.

In: Holzforschung, Vol. 51, No. 1, 1997, p. 27 - 33.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Suurnäkki, Anna

AU - Li, T.-Q.

AU - Buchert, Johanna

AU - Tenkanen, Maija

AU - Viikari, Liisa

AU - Vuorinen, Tapani

AU - Ödberg, L.

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AB - The effects of enzymatic removal of xylan and glucomannan from pine and birch kraft pulps on the pore size distribution and median pore width of the pulp fibres were determined by modified solute exclusion and NMR techniques. With the NMR method, clearly higher median pore sizes of the kraft fibres were obtained compared with the solute exclusion method. However, the effects of enzymatic treatments on pore size distributions and median pore widths of fibres were detected by both techniques. An increase in the pore width of both pine and birch kraft fibres was observed even after a limited xylanase treatment. The NMR technique appeared to be more suitable than the solute exclusion method for determination of the further increase of the median pore width and the widening of the pore size distribution of fibres by a more extensive xylanase treatment. Both techniques revealed an increase of the median pore width of fibres caused by the extensive removal of pine kraft pulp glucomannan. Despite their basic differences and specific limitations, both the NMR and solute exclusion techniques showed the enzymatic effects on the porosity of pulp fibres.

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