The reactivity of lignin carbohydrate complex (LCC) during manufacture of dissolving sulfite pulp from softwood

被引：29

作者：

Deshpande, Raghu ^{[1
,3
]}

Giummarella, Nicola ^{[2
]}

Henriksson, Gunnar ^{[1
,2
]}

Germgard, Ulf ^{[1
]}

Sundvall, Lars ^{[3
]}

Grundberg, Hans ^{[4
]}

Lawoko, Martin ^{[2
]}

机构：

[1] Karlstad Univ, SE-65188 Karlstad, Sweden

[2] KTH, Royal Inst Technol, Sch Chem Sci & Engn, Wallenberg Wood Sci Ctr, S-10044 Stockholm, Sweden

[3] MoRe Res, SE-89122 Ornskoldsvik, Sweden

[4] Domsjo Fabriker, SE-89186 Ornskoldsvik, Sweden

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2018年 / 115卷

关键词：

Lignin carbohydrate complexes; Sulfite pulping; Pine heartwood; Universal fractionation method; Size exclusion chromatography; KRAFT PULPS; DISSOLUTION; CELLULOSE; SPRUCE; BONDS; NMR;

D O I：

10.1016/j.indcrop.2018.02.038

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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 gamma-esters types. The alpha-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 alpha-ethers is discussed. It is suggested that the lignin carbohydrate bonds may play a vital role in lignin recalcitrance.

引用

页码：315 / 322

页数：8

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