Enzymatic solubilization of hemicelluloses in industrial softwood kraft pulps

Anna Suurnäkki (Corresponding Author), Anne Kantelinen, Bo Hortling, Johanna Buchert, Liisa Viikari

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

Industrial softwood kraft pulps produced by different methods were studied with respect to chemical composition and enzymatic accessibility. The main differences in the carbohydrate compositions of the pulps were in xylose and arabinose contents. A moderate cooking and oxygen delignification lead to pulps with a relatively higher content of low-arabinose substituted xylan than the extended cooking. However, the xylan in extended cooking pulps was more accessible to a xylanase isolated from Trichoderma reesei. The ratio of arabinose to xylose was equal in the hydrolysates of all xylanase treated pulps although the original amount of arabinose in pulps varied considerably. The xylanase was more effective than the mannanase of T reesei in solubilizing the corresponding carbohydrates, probably due to the more accessible location of xylan on the layers of the fibre. The decreased kappa number did not render the hemicelluloses more accessible to enzymatic action, and the degree of hydrolysis was related to the original hemicellulose content of the pulps.
Original languageEnglish
Pages (from-to)291-296
Number of pages6
JournalHolzforschung
Volume48
Issue number4
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

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Kraft pulp
Softwoods
Arabinose
Pulp cooking
Pulp
Xylans
Xylose
Carbohydrates
Delignification
Chemical analysis
Hydrolysis
hemicellulose
Oxygen
Fibers

Cite this

Suurnäkki, A., Kantelinen, A., Hortling, B., Buchert, J., & Viikari, L. (1994). Enzymatic solubilization of hemicelluloses in industrial softwood kraft pulps. Holzforschung, 48(4), 291-296. https://doi.org/10.1515/hfsg.1994.48.4.291
Suurnäkki, Anna ; Kantelinen, Anne ; Hortling, Bo ; Buchert, Johanna ; Viikari, Liisa. / Enzymatic solubilization of hemicelluloses in industrial softwood kraft pulps. In: Holzforschung. 1994 ; Vol. 48, No. 4. pp. 291-296.
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abstract = "Industrial softwood kraft pulps produced by different methods were studied with respect to chemical composition and enzymatic accessibility. The main differences in the carbohydrate compositions of the pulps were in xylose and arabinose contents. A moderate cooking and oxygen delignification lead to pulps with a relatively higher content of low-arabinose substituted xylan than the extended cooking. However, the xylan in extended cooking pulps was more accessible to a xylanase isolated from Trichoderma reesei. The ratio of arabinose to xylose was equal in the hydrolysates of all xylanase treated pulps although the original amount of arabinose in pulps varied considerably. The xylanase was more effective than the mannanase of T reesei in solubilizing the corresponding carbohydrates, probably due to the more accessible location of xylan on the layers of the fibre. The decreased kappa number did not render the hemicelluloses more accessible to enzymatic action, and the degree of hydrolysis was related to the original hemicellulose content of the pulps.",
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Suurnäkki, A, Kantelinen, A, Hortling, B, Buchert, J & Viikari, L 1994, 'Enzymatic solubilization of hemicelluloses in industrial softwood kraft pulps', Holzforschung, vol. 48, no. 4, pp. 291-296. https://doi.org/10.1515/hfsg.1994.48.4.291

Enzymatic solubilization of hemicelluloses in industrial softwood kraft pulps. / Suurnäkki, Anna (Corresponding Author); Kantelinen, Anne; Hortling, Bo; Buchert, Johanna; Viikari, Liisa.

In: Holzforschung, Vol. 48, No. 4, 1994, p. 291-296.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Viikari, Liisa

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