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The reactivity of lignin carbohydrate complex (LCC) during manufacture of dissolving sulfite pulp from softwood
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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 B.V. , 2018. Vol. 115, p. 315-322
Keyword [en]
Lignin carbohydrate complexes, Pine heartwood, Size exclusion chromatography, Sulfite pulping, Universal fractionation method, Carbohydrates, Dissolution, Ethers, Lignin, Polysaccharides, Wood products, Dissolving pulp, Fractionation methods, Lignin carbohydrates, Lignin reaction, Lignin-carbohydrate complex, Pulp samples, Sulfite pulp, carbohydrate, chemical bonding, chemical method, chemical property, chromatography, fractionation, manufacturing, polysaccharide, processing, sulfite, wood, Lignins, Softwoods
Identifiers
URN: urn:nbn:se:kau:diva-66661DOI: 10.1016/j.indcrop.2018.02.038Scopus ID: 2-s2.0-85042455336OAI: oai:DiVA.org:kau-66661DiVA, id: diva2:1189946
Available from: 2018-03-13 Created: 2018-03-13 Last updated: 2018-03-13

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