Extraction of hemicelluloses from fiberized spruce wood
2015 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 117, 19-24 p.Article in journal (Refereed) Published
A novel mechanical pre-treatment method was used to separate the wood chips into fiber bundles in order to extract high molecular weight wood polymers. The mechanical pre-treatment involved chip compression in a conical plug-screw followed by defibration in a fiberizer. The fiberized wood was treated with hot water at various combinations of time and temperature in order to analyze the extraction yield of hemicelluloses at different conditions. Nearly 6 mg/g wood of galactoglucomannan was obtained at 90◦C/120min which was about three times more than what could be extracted from wood chips. The extracted carbohydrates had molecular weight ranging up to 60 kDa. About 10% of each of the extracted material had a molecular weight above 30 kDa. The extraction liquor could also be reused for consecutive extractions with successive increase in the extraction yield of hemicelluloses.
Place, publisher, year, edition, pages
2015. Vol. 117, 19-24 p.
Spruce (Picea abies), Mechanical pre-treatment, Fiberized wood, Hemicelluloses, Galactoglucomannan
IdentifiersURN: urn:nbn:se:kth:diva-158963DOI: 10.1016/j.carbpol.2014.09.050ISI: 000346263800003ScopusID: 2-s2.0-84922311559OAI: oai:DiVA.org:kth-158963DiVA: diva2:781404
FunderKnut and Alice Wallenberg Foundation
QC 201501162015-01-162015-01-162015-02-13Bibliographically approved