New method for the quantitative preparation of lignin-carbohydrate complex from unbleached softwood kraft pulp: Lignin-polysaccharide networks I
2003 (English)In: Holzforschung, ISSN 0018-3830, Vol. 57, no 1, 69-74 p.Article in journal (Refereed) Published
A new method for the quantitative preparation of pulp representative lignin-carbohydrate complexes (LCC) has been developed, in which LCC has been systematically prepared at quantitative yield, fractionated and qualitatively determined. At least 90% of residual lignin in softwood kraft pulp is proposed to be chemically bonded to carbohydrates. A major part of LCC (92%) in softwood kraft pulp was observed between lignin, xylan and glucomannan, whereas a minor part (8%) was linked to cellulose. Half of the hemicelullosic LCC is a lignin-glucomannan complex. The other half is lignin-xylan complex and xylan-lignin-glucomannan complex. Thus, part of the residual lignin in softwood kraft pulp crosslinks xylan and glucomannan. The proposed linkages are of covalent type. At most 10% of the residual lignin is not bonded covalently to carbohydrates.
Place, publisher, year, edition, pages
2003. Vol. 57, no 1, 69-74 p.
Endoglucanase, Lignin-carbohydrate complex (LCC), Residual lignin
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:kth:diva-7817DOI: 10.1515/HF.2003.011ISI: 000181276300011OAI: oai:DiVA.org:kth-7817DiVA: diva2:12953
QC 201009232005-10-202005-10-202012-01-31Bibliographically approved