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The reactivity of lignin carbohydrate complex (LCC) during manufacture of dissolving sulfite pulp from softwood
MoRe Research, SE-89122 Örnsköldsvik, Sweden. (Karlstad University, SE-65188 Karlstad, Sweden)
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology. Wallenberg Wood Science Center. (Wallenberg Wood Science Center)ORCID iD: 0000-0003-4266-0720
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology. Wallenberg Wood Science Center. (Wallenberg Wood Science Center)
Karlstad University, SE-65188 Karlstad, Sweden.
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2018 (English)In: Industrial crops and products (Print), ISSN 0926-6690, E-ISSN 1872-633X, Vol. 115, p. 315-322Article in journal (Refereed) Published
Abstract [en]

The presence of covalent bonds between lignin and polysaccharides was investigated in dissolving pulps made with one-stage and two-stage acidic sulfite pulping for 100% pine heartwood raw material. The covalent bonds between lignin and pulp polysaccharides occurred mainly to xylan and glucomannan and were of the phenyl glycosides and γ–esters types. The α-ethers that are common in wood were missing in the studied pulp samples. Based on these findings and known lignin reactions during sulfite pulping, a mechanism explaining the absence of the α-ethers is discussed. It is suggested that the lignin carbohydrate bonds may play a vital role in lignin recalcitrance.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 115, p. 315-322
Keywords [en]
Lignin carbohydrate complexes; Sulfite pulping; Pine heartwood; Universal fractionation method; Size exclusion chromatography
National Category
Wood Science
Research subject
Chemical Engineering; Fibre and Polymer Science
Identifiers
URN: urn:nbn:se:kth:diva-223573DOI: 10.1016/j.indcrop.2018.02.038Scopus ID: 2-s2.0-85042455336OAI: oai:DiVA.org:kth-223573DiVA, id: diva2:1185006
Funder
Knut and Alice Wallenberg Foundation, 8107
Note

QC 20180226

Available from: 2018-02-22 Created: 2018-02-22 Last updated: 2018-02-26Bibliographically approved

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Publisher's full textScopushttps://www.sciencedirect.com/science/article/pii/S0926669018301432

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Lawoko, Martin

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