Rapeseed straw as a renewable source of hemicelluloses: Extraction, characterization and film formation
2015 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 133, 179-186 p.Article in journal (Refereed) Published
Polymeric hemicelluloses were extracted by autohydrolysis and alkali from a biomass feed consisting of the stems of rapeseed straw according to a full statistical factorial screening design. Water extraction yielded fractions rich in galactoglucomannan, while alkaline extraction yielded primarily xylan. The extracted galactoglucomannan and xylans had similar molecular weights, while the yield of xylan was higher than the yield of galactoglucomannan. The extracted hemicellulose fractions also contained some lignin (7-15%) and traces of Ca, K, Na, and Si. Free-standing films were prepared from the hemicellulose fractions with different xylan:galactoglucomannan ratios. The rapeseed xylan films showed strain-to-break values >60% without any added plasticizers.
Place, publisher, year, edition, pages
2015. Vol. 133, 179-186 p.
Rapeseed/canola straw, Extraction, Autohydrolysis, Alkaline extraction, Xylan, Glucomannan, Film
IdentifiersURN: urn:nbn:se:kth:diva-175899DOI: 10.1016/j.carbpol.2015.07.023ISI: 000361920900024PubMedID: 26344270ScopusID: 2-s2.0-84937926293OAI: oai:DiVA.org:kth-175899DiVA: diva2:870276
FunderSwedish Research Council Formas, 2013-844
QC 201511132015-11-132015-10-262016-04-28Bibliographically approved